Download Amana RCS10PBDA Service manual

R
Microwave Oven
Service Manual
RCS10PBDA
RCS10MPA
RCS10A
RCS10MPSA
RCS10MPA
RFS12MPSA
RCS10MPSA
RCS10SW2A
RFS12G
RFS12SW2A
RFS12MPSA
RFS12G
CAUTION
BEFORE SERVICING THE UNIT, READ THE
SAFETY PRECAUTIONS IN THIS MANUAL.
SAFETY PRECAUTIONS
This device is to be serviced only by properly qualified service personnel.
Consult the service manual for proper service procedures to assure continued safety operation and for precautions to be
taken to avoid possible exposure to excessive microwave energy.
PRECAUTIONS TO BE OBSERVED BEFORE AND
DURING SERVICING TO AVOID POSSIBLE
EXPOSURE TO EXCESSIVE MICROWAVE ENERGY
A) Do not operate or allow the oven to be operated with the door open.
B) Make the following safety checks on all ovens to be serviced before activating the magnetron or other
microwave source, and make repairs as necessary; (1) interlock operation, (2) proper door closing, (3)
seal and sealing surfaces (arcing, wear, and other damage), (4) damage to or loosening of hinges and
latches, (5) evidence of dropping or abuse.
C) Before turning on microwave power for any service test or inspection within the microwave generating
compartments, check the magnetron, wave guide or transmission line, and cavity for proper alignment,
integrity, and connections.
D) Any defective or misadjusted components in the interlock, monitor, door seal, and microwave generation
and transmission systems shall be repaired, replaced, or adjusted by procedures described in this manual
before the oven is released to the owner.
E) A microwave leakage check to verify compliance with the Federal Performance Standard should be
performed on each oven prior to release to the owner.
CONTENTS
CONTENTS
(Page)
(Page)
SAFETY PRECAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Inside front cover
SAFETY
PRECAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Inside front cover
SPECIFICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-1
SPECIFICATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1-1
CAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-1
CAUTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 2-1
INSTALLATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-1
INSTALLATIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 3-1
OPERATING INSTRUCTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-1
OPERATING INSTRUCTIONS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-1
FEATURES- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-1
COOKING DISPLAYS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-7
CONTROL PANEL - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-1
PROGRAMMING DISPLAYS - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-7
OPERATION - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-3
OPERATION
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-8
PROGRAMMING - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 4-4
PROGRAMMING
- - - - - - - - - - - - - - -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- -4-6
- - - - - 4-9
SCHEMATIC DIAGRAM
USERCIRCUIT
OPTIONS
- - - - - - - - - - - - - - - -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- -4-7
- - - - - 4-10
DESCRIPTION
- - - - - 4-11
SCHEMATIC
DIAGRAM - - - - - - -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- ----------------------------------------------------------- -- -- -- -- -- -- -- -- -- -- -- - -5-1
SERVICE INFORMATION
CIRCUIT
DESCRIPTION
- - - - - - -INSTRUMENTS
- - - - - - - - - - - - - - - - - - - - -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- -5-1
- - - - - 4-12
TOOLS
AND MEASURING
SERVICE
INFORMATION
- - -TEST
- - - - - - --- - -- ----- - - -- ---- - -- ----- - - -- ---- - -- ----- - - -- ---- - -- ----- - - -- ---- - -- ----- - - -- ---- - -- ----- - - -- ---- - -- ----- - - -- ---- - -- ----- - - -- ---- - -- -5-1
- - - - 5-1
MICROWAVE
LEAKAGE
MEASUREMENT
OF MICROWAVE
POWER
TOOLS
AND MEASURING
INSTRUMENTS
- - - OUTPUT
- - - - - - - - - - - - -------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- --------- -- -- -- -- -- -5-3
- - - - - 5-1
DISASSEMBLY AND ADJUSTMENT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-3
MICROWAVE LEAKAGE TEST - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-1
INTERLOCK CONTINUITY TEST- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-7
MEASUREMENT OF MICROWAVE POWER OUTPUT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-3
COMPONENT TEST PROCEDURE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-8
DISASSEMBLY AND ADJUSTMENT - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-3
TROUBLE SHOOTING - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-11
INTERLOCK CONTINUITY TEST- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-7
COMPONENT TEST PROCEDURE - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-8
TROUBLE SHOOTING - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 5-11
SPECIFICA
SPECIFICATIONS
SPECIFICATIONS
ITEM
ITEM
MODEL
MODEL
Power Requirement
Power
Requirement
Power Output
Power Output
Microwave Frequency
Microwave Frequency
Magnetron
Magnetron
Timer
Timer
Outside Dimensions
Outside Dimensions
Cavity Dimensions
Cavity Dimensions
Net Weight
Net Weight
Shipping weight
Shipping weight
Control
Complement
Control
Complement
DESCRIPTION
RCS10MPA / RCS10MPSA / RCS10A
RFS12MPSA / RFS12G
DESCRIPTION
RCS10SW2A
RCS10MPA / RCS10PBDA
RCS10MPSA
120Volts
VoltsAC
AC60
60Hz
Hz
120
1,500
, 0 Watts
1,500 Watts
Single phase, 3 wire grounded
Single phase, 3 wire grounded
1,000 Watts full microwave power (IEC 60705)
1,200 Watts full microwave power (IEC 60705)
2,450 MHz
2,450 MHz
2M248
2M248
0 ~ 60 min.
0 ~ 60 min.
21 3/4” (W) x 14 1/4” (H) x 17 7/8”(D)
207/8” (W) x 123/8” (H) x 151/2” (D)
14 1/4” (W) x 8 7/8” (H) x 16 3/8”(D)
RFS12SW2A
RFS12MPSA
1,800
, 0 Watts
1,200
2 Watts full microwave power (IEC 60705)
1,200 Watts full microwave power (IEC 60705)
2M282
2M282
51 lbs (approx.)
71 lbs (approx.)
58 lbs (approx.)
80 lbs (approx.)
TouchControl
ControlSystem
System
Touch
Clock: 00
: 00~~60
60
Clock
MicrowavePower
Powerfor
forVariable
VariableCooking
Cooking
Microwave
Powerlevel
level
Power
HIGH-------------------------------Full
-------------------------------Fullpower
powerthroughout
throughout the
the cooking
cooking time
time
HIGH
70%(Med.-High)----------------approx.
(Med.-High)----------------approx.70%
70%ofofFull
Full power
power
70%
50%(Med.-Low)
(Med.-Low) ---------------approx.
---------------approx.50%
50%ofofFull
Full power
power
50%
20%(Low)
(Low)-----------------------approx.
-----------------------approx.20%
20%ofofFull
Full power
power
20%
Nameplate
Location
Nameplate
Location
Back side
Back side
This microwave oven is designed for commercial use only.
Accessories
Time
chart
It is not recommended for built-in
Installation.
This microwave oven is designed for commercial use only.
It is not recommended for buelt-in Installation.
1-1
1-1
SPECIFICATIONS
RFS12G
CAUTIONS
Unlike other appliances, the microwave oven is
high-voltage and high-current equipment.
Though it is free from danger in ordinary use,
extreme care should be taken during repair.
MICROWAVE RADIATION
Personnel should not be exposed to the
microwave energy which may radiate from the
magnetron or other microwave generating
device if it is improperly used or connection.
All input and output microwave connections,
waveguide, flange, and gasket must be secure
never operate the device without a microwave
energy absorbing load attached.
Never look into an open waveguide or antenna
while the device is energized.
¥ DO NOT operate on a 2-wire extension cord during
repair and use.
¥ NEVER TOUCH any oven components or wiring during
operation.
¥ BEFORE TOUCHING any parts of the oven, always
remove the power plug from the outlet.
¥ For about 30 seconds after the oven stops, an electric
charge remains in the high voltage capacitor. When
replacing or checking, you must discharge the high
voltage capacitor by shorting across the two terminals
with an insulated screwdriver.
¥ Proper operation of the microwave oven requires that
the magnetron be assembled to the waveguide and
cavity. Never operate the magnetron unless it is
properly installed.
¥ Be sure that the magnetron gasket is properly
installed around the dome of the tube whenever
installing the magnetron.
ANTENNA
Gasket
COOLING FIN
FILAMENT
TERMINALS
MAGNETRON
CHASSIS GROUND
MAGNETRON
¥ Remove your watches whenever working close to or
replacing the Magnetron.
¥ DO NOT touch any parts of the control panel circuit. A
resulting static electric discharge may damage this
P.C.B.
¥ NEVER operate the oven with no load.
¥ NEVER injure the door seal and front plate of the oven
cavity.
¥ NEVER put iron tools on the magnetron.
¥ NEVER put anything into the latch hole and the
interlock switches area.
THE OVEN IS TO BE SERVICED ONLY
BY PROPERLY QUALIFIED SERVICE
PERSONNEL.
2-1
INSTALLATIONS
BEFORE YOU BEGIN, READ THE FOLLOWING INSTRUCTIONS COMPLETELY AND CAREFULLY.
INSTALLING
GROUNDING INSTRUCTIONS
1. Empty the microwave oven and clean inside it with a
soft, damp cloth. Check for damage such as
misaligned door, damage around the door or dents
inside the cavity or on the exterior.
For personal safety, this appliance must be fully
grounded at all times.
In the event of an electrical short circuit, grounding
reduces the risk of electrical shock.
The plug must be plugged into an outlet that is properly
installed and grounded.
2. Put the oven on a counter, table, or shelf that is strong
enough to hold the oven and the food and utensils you
put in it. (The control panel side of the oven is the
heavy side. Use care when handling.)
WARNING
3. Do not block the vent and the air intake openings.
Blocking vent or air intake openings can cause
damage to the oven and poor cooking results. Make
sure the microwave oven legs are in place to ensure
proper air flow.
Improper use of the grounding plug can result in a
risk of electric shock.
Do not, under any circumstances, cut or remove
the third ground prong from the power cord plug.
4. The oven should not be installed in any area where
heat and steam are generated, because they may
damage the electronic or mechanical parts of the unit.
Do not install the oven next to a conventional surface
unit or above a conventional wall oven.
PREFERRED METHOD
5. Use microwave oven in an ambient temperature less
than 104¡F(40¡C).
6. Place the microwave oven as far away as possible
from TV, RADIO, COMPUTER, etc., to prevent
interference.
RFS12 series
7. Place the microwave oven on a stardy and flat surface.
ENSURE PROPER GROUND
EXISTS BEFORE USE
PREFERRED METHOD
A
A
A
A
AA
B
B
A - Allow at least 11/2 inches (3.81 centimeters) of clearance
around top and sides of equipment. Proper air flow around
equipment cools electrical components. With restricted air flow,
oven may not operate properly and life of electrical parts is
reduced.
B - Allow at least 3 inches from door front to edge of countertop to
avoid accidental tipping of oven.
3-1
RCS10 series
ENSURE PROPER GROUND
EXISTS BEFORE USE
OPERATING INSTRUCTIONS
FEATURES
FEATURES
Splatter Shields
Window DoorWindow
Screen
Door Screen
Electronic Control
Electronic Control
Door Open Button
Safety Door Lock System
Turntable
Safety Door Lock System
Rotating Ring
CONTROL
PANEL
CONTROL
PANEL
HOLD
0%
DEFROST
20%
MEDIUM
50%
MED-HI
70%
TIME
ENTRY
STOP
RESET
START
1
2
3
4
5
6
7
8
9
0
Display
Display
Some items in display can be seen but will not glow.
Some
items in display can be seen but will not glow.
Pads
Pads
TIME ENTRY
Use to enter heating time without changing
preprogrammed number pads.
TIME ENTRY
Use to enter heating time without changing
Pads 1-0
Use to begin number
heating pads.
with preprogrammed
preprogrammed
times and power levels or to enter times for
Pads 1-0
Use “Manual
to beginTime
heating
withcooking.
preprogrammed
Entry”
times and power levels or to enter times for
ÒManual Time EntryÓ cooking.
STOP/RESET
Use to exit programming mode and stop
HOLD 0%,
Use cooking
to selectduring
powercooking
level. Oven
cycle.can heat at
DEFROST 20%, full or reduced power. If oven power level is
MEDUIM
50%,
set to
0%tooven
not Time
heat for
START
Use
start does
“Manual
Entry” program
MED-HI 70%
programmed
If no power
level
is Use to
or restart time.
interrupted
cooking
cycle.
selected,
oven
100%Use
power.
advance
to operates
next userat
option.
to save
8
STOP/RESET
power levels
whenand
programming
Use times
to exitand
programming
mode
stop
pads.
cooking during cooking cycle.
9
START
Use to start ÒManual Time EntryÓ program
or restart interrupted cooking cycle. Use to
advance to next user option. Use to save
times and power levels when programming
pads.
0
RCS10A
4-1
OPERATING INSTRUCTIONS
FEATURES
Window Door Screen
Electronic Control
Safety Door Lock System
CONTROL PANEL
Display
Some items in display can be seen but will not glow.
Pads
8
TIME ENTRY
Use to enter heating time without changing
preprogrammed number pads.
Pads 1-0
Use to begin heating with preprogrammed
times and power levels or to enter times for
“Manual Time Entry” cooking.
HOLD 0%,
DEFROST 20%,
MEDUIM 50%,
MED-HI 70%
Use to select power level. Oven can heat at
full or reduced power. If oven power level is
set to 0% oven does not heat for
programmed time. If no power level is
selected, oven operates at 100% power.
STOP/RESET
Use to exit programming mode and stop
cooking during cooking cycle.
START
Use to start “Manual Time Entry” program
or restart interrupted cooking cycle. Use to
advance to next user option. Use to save
times and power levels when programming
pads.
9
0
RCS10MPA
4-2
OPERATING INSTRUCTIONS
FEATURES
FEATURES
Splatter Shields
Window Door Screen
Window Door Screen
Electronic Control
Electronic Control
Door Open Button
Safety Door Lock System
Turntable
Safety Door Lock System
Rotating Ring
CONTROL PANEL
CONTROL PANEL
Display
Display
Some items in display can be seen but will not glow.
Some items in display can be seen but will not glow.
Pads
HOLD
0%
DEFROST
20%
MEDIUM
50%
MED-HI
70%
TIME
ENTRY
STOP
RESET
START
1
2
3
4
5
6
7
8
9
0
TIME ENTRY
Pads
TIME
ENTRY
Pads
1-0
Pads 1-0
POWER
LEVEL
Use to enter heating time without changing
preprogrammed number pads.
Use
to enter
heating
time
without
changing
Use
to begin
heating
with
preprogrammed
preprogrammed
number
pads.
times and power levels or to enter times for
“Manual
Time
Entry”
cooking.
Use
to begin
heating
with
preprogrammed
times
and
power
levels
or
to Oven
enter can
times
for at
Use to select power level.
heat
ÒManual
Time
EntryÓ
cooking.
full or reduced power. If oven power level is
settotoselect
0% oven
does
notOven
heat for
Use
power
level.
can heat at
programmed
time.
If
no
power
levellevel
is is
full or reduced power. If oven power
selected,
oven
operates
at
100%
power.
set to 0% oven does not heat for
HOLD 0%,
DEFROST 20%,
MEDUIM 50%,
STOP/RESET
Use to exit time.
programming
mode
and
MED-HI
70%
programmed
If no power
level
is stop
cooking
during
cooking
cycle.
selected, oven operates at 100% power.
8
9
START
STOP/RESET
START
0
QTY2x
RCS10MPSA / RFS12MPSA
4-3
Use
to start
“Manual Time
Entry”
Use
to exit
programming
mode
andprogram
stop
or
restart
interrupted
cooking
cooking during cooking cycle. cycle. Use to
advance to next user option. Use to save
Use to start ÒManual Time EntryÓ program
times and power levels when programming
or restart interrupted cooking cycle. Use to
pads.
advance to next user option. Use to save
Useand
to automatically
the
times
power levels increase
when programming
programmed
time
for
double
quantities.
pads.
OPERA TING INSTRUCTIONS
FEATURES
FEATURES
Splatter Shields
Window Door Screen
Window Door Screen
Electronic Control
Electronic Control
Door Open Button
Safety Door Lock System
Turntable
Safety Door Lock System
Rotating Ring
CONTROL PANEL
CONTROL PANEL
Display
Some items in display can be seen but will not glow.
Display
Some items in display can be seen but will not glow.
Pads
DIAL
HOLD
0%
DEFROST
20%
MEDIUM
50%
MED-HI
70%
TIME
ENTRY
STOP
RESET
START
1
2
3
4
5
6
7
8
9
0
Pads
Use to enter cooking time.
to begin
heating
preprogrammed
TIMEQUICK
ENTRYSET Use Use
to enter
heating
time with
without
changing
times and power
levels.
preprogrammed
number
pads.
8
9
Pads70%,
1-0
50%,
DEFROST
HOLD 0%,
START
DEFROST 20%,
MEDUIM 50%,
MED-HI 70%
Use Use
to begin
heating
withlevel.
preprogrammed
to select
power
Oven can heat at
timesfull
and
power
levels
or
or reduced power. to enter times for
ÒManual Time EntryÓ cooking.
STOP/RESET
Use to exit programming mode and stop
cooking during cooking cycle.
START
Use to start ÒManual Time EntryÓ program
or restart interrupted cooking cycle. Use to
advance to next user option. Use to save
times and power levels when programming
0
RCS10PBDA
4-4
Use to select power level. Oven can heat at
Use to start “Manual Time Entry” program
full or reduced power. If oven power level is
or restart interrupted cooking cycle. Use to
set toadvance
0% oven
does not heat for
to next user option. Use to save
programmed
time.
If no
power
level
is
times and power
levels
when
programming
selected,
oven
operates
at
100%
power.
pads.
OPERATING INSTRUCTIONS
FEATURES
FEATURES
Splatter Shields
Door Screen
Window DoorWindow
Screen
Electronic Control
Electronic Control
Door Open Button
Safety Door Lock System
Turntable
Safety Door Lock System
Rotating Ring
CONTROL PANEL
CONTROL PANEL
Display
Display
Some items in display can be seen but will not glow.
Some items in display can be seen but will not glow.
Pads
HOLD
0%
DEFROST
20%
MEDIUM
50%
MED-HI
70%
TIME
ENTRY
STOP
RESET
START
1
2
3
4
5
6
7
8
9
0
TIME ENTRY
Pads
TIMEPads
ENTRY
1-0
Use to enter heating time without changing
preprogrammed number pads.
UseUse
to enter
heating
timewith
without
changing
to begin
heating
preprogrammed
preprogrammed
number
pads.
times and power levels or to enter times for
Entry”
Pads 1-0
Use“Manual
to beginTime
heating
withcooking.
preprogrammed
times
and
power
levels
or
to enter
for at
HOLD 0%,
Use to select power level.
Oventimes
can heat
ÒManual
Time
EntryÓ
cooking.
DEFROST 20%, full or reduced power. If oven power level is
MEDUIM
to 0% power
oven does
heatcan
for heat at
HOLD
0%, 50%, Useset
to select
level.not
Oven
MED-HI
70%
programmed
time.
If
no
power
level
is is
DEFROST 20%, full or reduced power. If oven power
level
selected,
oven
operates
at
100%
power.
MEDUIM 50%,
set to 0% oven does not heat for
MED-HI
70%
programmed
If no power
leveland
is stop
STOP/RESET
Use to exittime.
programming
mode
selected,
oven
operates
at 100%
cooking
during
cooking
cycle. power.
8
STOP/RESET
START
9
START
0
RCS10SW2A / RFS12SW2A
4-5
UseUse
to exit
programming
modeEntry”
and stop
to start
“Manual Time
program
or restart
interrupted
cooking cycle. Use to
cooking
during
cooking cycle.
to next user option. Use to save
Useadvance
to start ÒManual
Time EntryÓ program
times and power levels when programming
or restart interrupted cooking cycle. Use to
pads.
advance to next user option. Use to save
times and power levels when programming
pads.
OPERATING INSTRUCTIONS
FEATURES
FEATURES
Window Door Screen
Window Door Screen
Electronic Control
Electronic Control
Safety Door Lock System
Safety Door Lock System
CONTROL PANEL
CONTROL PANEL
TIME
POWER
ENTRY LEVEL
-
Display
Display
Some items in display can be seen but will not glow.
Some items in display can be seen but will not glow.
QTY
2X
Pads
Pads
TIME ENTRY
TIME ENTRY
Pads 1-0
+
8
89
90
0
RFS12G
Use to enter heating time without changing
preprogrammed
number
pads.
Use to enter heating
time
without changing
Use
to begin heating
with preprogrammed
preprogrammed
number
pads.
times
and
power
levels
or
to
enter times for
Pads 1-0
Use to begin heating with preprogrammed
“Manual Time Entry” cooking.
times and power levels or to enter times for
Use
to enter
times
for “Manual
DIAL
“Manual
Time
Entry”
cooking.Time Entry”
cooking.
HOLD 0%,
Use to select power level. Oven can heat at
POWER 20%, Use
to reduced
select power
level.
Ovenpower
can heat
at is
DEFROST
full or
power.
If oven
level
LEVEL 50%,
full
oven
MEDUIM
setortoreduced
0% ovenpower.
does Ifnot
heatpower
for level is
set
to 0% oventime.
doesIfnot
forlevel is
programmed
no heat
power
programmed
time.
If
no
power
levelpower.
is
selected, oven operates at 100%
selected, oven operates at 100% power.
STOP/RESET
Use to exit programming mode and stop
STOP/RESET
Use
to exit
programming
mode and stop
cooking
during
cooking cycle.
cooking during cooking cycle.
START
Use to start “Manual Time Entry” program
START
Use
to startinterrupted
“Manual Time
Entry”
program
or restart
cooking
cycle.
Use to
or
restart
interrupted
cooking
cycle.
Use
to
advance to next user option. Use to
save
advance to next user option. Use to save
times and power levels when programming
times and power levels when programming
pads.
pads.
QTY2x
Use to automatically increase the
QTY2x
Use to automatically increase the
programmed time for double quantities.
programmed time for double quantities.
4-6
Cooking Displays
Cooking Displays
Shows when power is connected to oven. Open and close
Shows when power is connected to oven. Open and close
door to clear.
door to clear.
READY
when oven
ovencontrol
controlwill
willaccept
acceptentries.
entries.
READY shows
shows when
Appears
after
oven
door
is
opened
and
closed.
Appears after oven door is opened and closed.
33:33
heating time.
time.When
Whenmore
morethan
than1 1heating
heatingstage
stage
88:88 shows heating
is is
programmed,
total time
time for
forall
allstages
stagesdisplays.
displays.
programmed, total
COOK shows when
COOK
when oven
ovenisisoperating.
operating.
20 indicates
indicates the microwave
20
microwavepower
powerlevel
levelused.
used.If Ifpower
powerlevel
level
does
not
show,
oven
is
heating
at
100%
power.
does
oven is heating at 100% power.
Programming
Displays
Programming
Displays
Indicates programming mode. See ÒProgrammingÓ section
Indicates programming mode. See “Programming” section
of manual for programming procedure.
of manual for programming procedure.
Indicates programming user options mode. See ÒUser
Indicates
programming
userforoptions
mode. procedure.
See “User
OptionsÓ section
of manual
programming
Options” section of manual for programming procedure.
4-7
Operation
CAUTION
Preprogrammed Times and Cook Level
All preprogrammed pads arrive set at full power.
To avoid fire, do not dry newspapers or clothes in
microwave oven.
Interrupting
Option: Double Digit
Option: Single Digit
Pads
Operation
• Open oven door to interrupt operation. Oven fan
continues to operate. Close door and press START
pad to resume oven operation.
• Press STOP/RESET pad to interrupt operation.
Display continues to show countdown time. Press
START pad to resume oven operation and
countdown timing.
Canceling Mistakes
• If oven is operating, press STOP/RESET pad once to
stop oven, then again to clear display.
• If oven door is open and time shows in display, close
oven door and press STOP/RESET pad to clear
display.
Heating
Times
Pads
Heating Pads
Times
Heating
Times
1
10 sec.
01
10 sec.
11
20 sec.
2
20 sec.
02
20 sec.
12
40 sec.
3
30 sec.
03
30 sec.
13
1 min.
4
45 sec.
04
45 sec.
14
1:30 min.
5
1 min.
05
1 min.
15
2 min.
6
1:30 min.
06
1:30 min.
16
3 min.
7
2 min.
07
2 min.
17
4 min.
8
3 min.
08
3 min.
18
6 min.
9
4 min.
09
4 min.
19
8 min.
0
5 min.
10
5 min.
20
10 min.
Operating Preprogrammed Pads
Oven has 10 ~ 20 preprogrammed number pads.
Instructions are written for factory programmed ovens.
Ovens that are reprogrammed can respond differently
than described below.
1. Open oven door , place food in oven, and close oven
door
• If pad is not pressed in 30 seconds, open and close
oven door again.
2. Press desired number pad.
• Oven operates and time counts down.
3. Oven stops heating and oven signal sounds when
heating timing elapses.
Operating QTY 2X Pads
1. Press
QTY
2X
Pad.
2. Press desired number pad
• Example : press QTY
+
2X
1 = 18 sec.
Manual Time Entry
Manual Time Entry feature allows the operator to enter
time and power levels, and heat without changing the
preprogrammed pads.
1. Open oven door, place food in oven, and close door.
• Display shows "READY".
• If pad is not pressed in 30 seconds, open and close
oven door again.
2. Press TIME ENTRY pad.
• Display shows "00:00".
3. Press number pads to enter desired cooking time.
• For example, to heat for 2 minutes 30 seconds,
press 2, 3, and 0 pads.
4. Press desired power level pad to change power level.
• If a power level pad is not pressed, oven defaults to
100% power.
• For example, pressing MEDIUM 50% pad sets oven
to 50% power.
• Display shows current power level if other than 100
percent power.
5. Press START pad.
• Oven operates and time counts down.
6. Oven stops heating and oven signal sounds when
heating timing elapses.
4-8
PROGRAMMING
Preprogrammed Number Pads
Multiple Heating Stages
Oven has 10 preprogrammed number pads. Follow
instructions below to program heating times and power
levels for customized cooking.
Follow instructions below to program oven to perform 3
consecutive heating cycles without interruption.
1. Open oven door.
¥ If door is closed or STOP/RESET pad is pressed
before finishing programming sequence, oven exits
programming mode.
1. Open oven door.
¥ If door is closed or STOP/RESET pad is pressed
before finishing programming sequence, oven exits
programming mode.
2. Press pad 1 for approximately 5 seconds.
¥ After 5 seconds, signal sounds.
2. Press and hold pad 1 for approximately 5 seconds.
¥ After 5 seconds, signal sounds. Display shows
ÒPROGRAMÓ indicating program mode..
3. Press desired number pad.
¥ Display shows heating time and preprogrammed
number.
3. Press desired number pad.
¥ Display shows heating time, ÒCOOK LEVELÓ and
power level if other than 100 percent power.
4. Press number pads to enter desired cooking time.
¥ For example, to heat for 2 minutes 30 seconds,
4. Press number pads to enter desired cooking time.
¥ For example, to heat for 2 minutes 30 seconds,
press 2, 3, and 0 pads.
5. Press desired power level pad to change power level.
¥ If a power level pad is not pressed, oven defaults to
100% power.
¥ For example, pressing MEDIUM 50% pad sets oven
to 50% power.
¥ Display shows current power level if other than 100
percent power.
5. Press desired power level pad to change power level.
¥ If a power level pad is not pressed, oven defaults to
100% power.
¥ For example, pressing MEDIUM 50% pad sets oven
to 50% power.
¥ Display shows current power level if other than 100%
power.
6. Press TIME ENTRY pad
¥ Display briefly shows ÒSTAGE 2Ó . Then cook time
and power level for stage show in display.
¥ Repeat steps 5-6 to create additional stages.
6. Press START pad to save new heating time and
power level in oven memory.
¥ Repeat step 3-6 to program additional pads.
7. Press START pad to save new heating time and
power level in oven memory.
8. Press STOP/RESET pad or close oven door to exit
programming mode.
7. Press STOP/RESET pad or close oven door to exit
programming mode.
4-9
4. Press START pad to advance to next option.
See table for options.
User Options
Follow the instructions below to customized the
microwave ovenÕs operation. End-of-cycle signal,
maximum heating time and other options can be
changed to meeting your cooking needs.
5. Press number pad (0,1-3) to change option.
6. Press START pad to save changes.
¥ Repeat steps 4-6 to change additional options.
1. Open oven door.
¥ If door is closed or STOP/RESET pad is pressed
before finishing programming sequence, oven exits
programming mode.
7. Press STOP/RESET pad or close oven door to exit
programming mode.
2. Press and hold pad 2 for approximately 5 seconds.
¥ After 5 seconds, signal sounds. Display shows
ÒOPTIONÓ.
3. Press number pad that matches desired option.
¥ ÒOPÓ represents optional program mode, first number
represents option number and second number
represents functions currently selected for option.
Numbered Pads
Numbered Pads
1
End
1 of Cycle Beep
End of Cycle Beep
2
Speaker Volume
2
Speaker Volume
3
Key Beep
3 4
Key
Beep Enable
Keyboard
Window
4
Keyboard Enable
Window5
Add Time During
5 Heating
Add Time during
6
Heating
Reset Door Open
6
Display
Display
OP:10
OP:11
OP:10
OP:12
OP:11
OP:20
OP:12
OP:21
(some models)
Reset
Door Open
Maximum Heating Time
8
Manual
7 Operation
9
Maximum Heating
(some models)
Time
Double Digit Operation
8
0
Manual Operation
Clean Filter Message
Pad
Pad
Number
Number
Continuous
beep until
door is opened.
3 second
continuous
beep
5 beep
bursts until doorBeep
is opened.
(Continuous
until
Eliminates
beep. bursts
5 beeps
door is opened)
until door is opened
Sets volume to low.
Eliminates beep
Sets volume to low; 60-70dB
Sets volume to high.
Sets volume to medium; 70-80dB
Prevents beep when pad is pressed.
(Sets volume to high; 80-90dB)
Allows beep when pad is pressed.
OP:30
OP:40
OP:31
OP:41
Prevents
signal
padkeyboard
is pressed.
15 seconds
after oven
doorwhen
is opened,
disabled.
OP:42
OP:40
OP:43
OP:41
Option
Option
Selected
Selected
Options (Factory Settings in Bold)
Options ( ) = Factory Setting
3 second beep.
OP:20
OP:22
OP:21
OP:23
OP:22
OP:30
OP:23
OP:31
Sets volume to medium.
(Allows
when
pad is
pressed.)
30 seconds
aftersignal
oven door
is opened,
keyboard
disabled.
1 minute after oven door is opened, keyboard disabled.
(30 seconds after oven door is opened, keyboard disabled)
2 minutes after oven door is opened, keyboard disabled
2 minutes after oven door is opened, keyboard disabled.
OP:50
Prevents adding heating time while oven is heating.
OP:51
Allows heating time to be changed while oven is heating when a memory pad
(Prevents adding heating time while oven is heating.)
is pressed.
OP:50
OP:51
OP:60
OP:61
7
OptionalProgram
Program
Optional
Indicator
Indicator
OP:60
OP:70
OP:71
OP:61
OP:80
OP:81
OP:70
OP:90
OP:71
OP:91
OP:80
OP:00
OP:81
Allows
time
while oven
heating.
Allows
oven toadding
resume heating
heating time
countdown
after is
door
is opened during
cycle.
Cancels heating time count down after door is opened during cycle.
(Cancels heating time count down after door is opened
during cycle.)
Allows 10 minutes of heating time.
Allows oven to resume heating time countdown after door is
opened
during cycle.
Allows use of preprogrammed pads only.
Allows 60 minutes of heating time (some models).
Allows
use of 10
manual
time entry
and preprogrammed
pads.
Allows
minutes
of heating
time.
Allows
10 (0-9) 60
preprogrammed
(Allows
minutes of pads.
heating
time.)
Allows 100 (00-99) preprogrammed pads.
Allows use of preprogrammed pads only.
(Allows use of manual time entry and preprogrammed pads.)
Do not display message.
OP:01
Display messag e for 24 hours every 7 days.
OP:02
Display message for 24 hours every 30 days.
OP:03
Display message for 24 hours every 90 days.
4-10
SCHEMATIC DIAGRAM
4-11
CIRCUIT DESCRIPTION
• A high voltage of approximately 2100 volts AC is
generated in the secondary of the high voltage
transformer which is increased by the action of the high
voltage diode and charging of the high voltage
capacitor.
• The negative 4,000 Volts DC is applied to the filament
of the magnetron.
GENERAL DETAILS
• The low voltage transformer supplies the necessary
voltage to the micom controller when power cord is
plugged in.
• When the door is closed, the primary switch is ON, the
secondary switch is ON, and the monitor switch opens
(contact COM and NO).
WHEN THE OVEN IS SET AT ANY LEVEL
EXCEPT MAXIMUM.
WHEN SELECTING COOKING POWER
LEVEL AND TIME
• The micom controller controls the ON-OFF time of
relay 3 by the applied signal to vary the average output
power of microwave oven as POWER LEVEL.
(refer to page 1-1)
• One complete cycle of relay 3 is 12.
• The micom controller memorizes the function you set.
• The time you set appears in the display window.
• Each indicator light turns on to indicate that the stage
has been set.
WHEN TOUCHING THE START PAD
WHEN THE DOOR IS OPENED DURING
COOKING
• The coil of the relay is energized by the micom
controller.
• Power input is supplied to the high voltage transformer
through the fuse to primary switch and realy 3.
• Stirrer fan rotates.
• Both the primary switch and relay 3 cut off the primary
winding voltage of the high voltage transformer.
• ON-OFF of relay 3 is coupled electrically with opening
and closing of the secondary switch.
• When the door is opened, the secondary switch is
opened and when the door is closed, the secondary
switch is closed.
• The cooking time stops counting down.
• Relay stops functioning.
• As the door is opened, if the contact of primary switch
and relay 3 and/or secondary switch fail to open,
the fuse opens due to the large current surge caused by
the monitor switch activation, which in turn stops magnetron
oscillation.
FUSE
L
PRIMARY
INTERLLOCK
SWITCH
H.V.
TRANSFORMER
INTERLLOCK
MONITOR
SWITCH
N
FUSE
RELAY 3
SECONDARY
SWITCH
L
PRIMARY
INTERLLOCK
SWITCH
MICOM CONTROLLER
H.V.
TRANSFORMER
INTERLLOCK
MONITOR
SWITCH
• The fan motor rotates and cools the magnetron by
blowing the air (coming from the intake on the baseplate).
• The air is also directed into the oven to exhaust the
vapor in the oven through the upper plate.
• Cooking time starts counting down.
• 3.3 volts AC is generated from the filament winding of
the high voltage transformer. This 3.3 volts is applied to
the magnetron to heat the magnetron filament through
two noise-preventing choke coils.
N
RELAY 3
SECONDARY
SWITCH
MICOM CONTROLLER
4-12
SERVICE INFORMATION
TOOLS AND MEASURING INSTRUMENTS
NECESSARY TOOLS
NECESSARY MEASURING INSTRUMENTS
Tools normally used for TV servicing are sufficient.
Standard tools are listed below.
¥ Diagonal pliers
¥ Long nose pliers
¥ Phillips screwdriver
¥ Flat blade screwdriver
¥ Wrench (size 5mm)
¥ Nutdriver (size 5mm)
¥ Adjustable wrench
¥ Soldering iron
¥ Solder
¥ Vinyl insulation tape
¥ Polishing cloth
¥ TESTER (VOLTS-DC, AC, Ohmmeter)
¥ Microwave survey meter
- Holaday HI-1500
HI-1501
- Narda 8100
8200
¥ Inch scale
¥ 600 cc non conductive material beaker (glass or plastic),
inside diameter: approx. 8.5 cm (31/2 in.)
¥ Cylindrical and made of borosilicate glass vessel.
max. thickness: 3 mm
outside diameter: approx. 190mm
height: approx. 90mm
¥ Glass thermometer: 100¡C or 212¡F (1 deg scale)
MICROWAVE LEAKAGE TEST
CAUTIONS
MEASURING MICROWAVE ENERGY
LEAKAGE
¥ Be sure to check microwave leakage prior to
servicing the oven if the oven is operative prior to
servicing.
¥ The service personnel should inform the
manufacturer, importer, or assembler of any
certified oven unit found to have a microwave
emission level in excess of 5 mW/cm2 and should
repair any unit found to have excessive emission levels
at no cost to the owner and should ascertain the cause
of the excessive leakage. The service personnel
should instruct the owner not to use the unit until the
oven has been brought into compliance.
¥ If the oven operates with the door open, the service
personnel should:
- Tell the user not to operate the oven.
- Contact the manufacturer and CDRH
(Center for Devices and Radiological Health)
immediately.
NOTE: Address on CDRH
Office of Compliance(HFZ-312)
Center for Devices and Radiological
Healthe 1390, Piccard Drive,
Rockville. MD 20850
¥ The service personnel should check all surface and
vent openings for microwave leakage.
¥ Check for microwave leakage after every servicing. The
power density of the microwave radiation leakage
emitted by the microwave oven should not exceed
4 mW/cm2. Always start measuring of an unknown field
to assure safety for operating personnel from radiation
leakage.
¥ Pour 275±15cc of 20±5¡C(68±9¡F) water in a beaker
which is graduated to 600 cc, and place the beaker
on the center of the turntable.
¥ Set the energy leakage monitor to 2,450 MHz and
use it following the manufacturer's recommended
test procedure to assure correct result.
¥ When measuring the leakage, always use the 2-inch
(5cm) spacer supplied with the probe.
¥ Operate the oven at its maximum output.
¥ Measure the microwave radiation using and
electromagnetic radiation monitor by holding the
probe perpendicular to the surface being measured
Move probe along shaded area
Probe scanning speed
Less than 2.5 cm/sec
( 1in/sec)
5-1
MEASUREMENT WITH OUTER CASE
REMOVED
NOTES WHEN MEASURING
¥ Do not exceed meter full scale deflection.
¥ The test probe must be removed no faster than
1 inch/sec (2.5 cm/sec) along the shaded area,
otherwise a false reading may result.
¥ The test probe must be held with the grip portion of the
handle.
A false reading may result if the operator's hand is
between the handle and the probe.
¥ When testing near a corner of the door, keep the probe
perpendicular to the surface making sure the probe
horizontally along the oven surface; this may possibly
cause probe damage.
¥ When you replace the magnetron, measure for
microwave energy leakage before the outer case is
installed and after all necessary components are
replaced or adjusted.
Special care should be taken in measuring the
following parts. (Circled area of Fig. below)
- Around the magnetron
- The waveguide
WARNING : AVOID CONTACTING ANY
HIGH VOLTAGE PARTS
RECORD KEEPING AND NOTIFICATION
AFTER MEASUREMENT
¥ After adjustment and repair of any microwave energy
interruption or microwave energy blocking device,
record the measured values for future reference. Also
enter the information on the service invoice.
¥ The microwave energy leakage should not be more
than 4 mW/cm.sq. after determining that all parts are in
good condition, functioning properly and genuine
replacement parts which are listed in this manual have
been used.
¥ At least once a year, have the electromagnetic energy
leakage monitor checked for calibration by its
manufacturer.
MEASUREMENT WITH A FULLY
ASSEMBLED OVEN
¥ After all components, including the outer case, are fully
assembled, measure for microwave energy leakage
around the door viewing window, the exhaust opening,
and air inlet openings.
¥ Microwave energy leakage must not exceed the values
prescribed below.
NOTE: Leakage with the outer case removed less than
5 mW/cm.sq. Leakage for a fully assembled
oven (Before the latch switch (primary) is
interrupted) with the door in a slightly opened
position-less than 2 mW/cm.sq.
5-2
MEASUREMENT OF MICROWAVE POWER OUTPUT
• Microwave power output measurement is made with
the microwave oven supplied at its rated voltage and
operated at its maximum microwave power setting with
a load of (1000±5) g of potable water.
• The water is contained in a cylindrical borosilicate glass
vessel having a maximum material thickness of 3 mm
and an outside diameter of approximately 190mm.
• The oven and the empty vessel are at ambient
temperature prior to the start of the test.
• The initial temperature (T1) of the water is (10±2)°C It
is measured immediately before the water is added to
the vessel. After addition of the water to the vessel,
the load is immediately placed on the center of the
ceramic plate which is in the lowest position and the
microwave power switched on.
• The time T for the temperature of the water to rise by a
value ∆ T of (10±2)°K is measured, where T is the time
in seconds and ∆T is the temperature rise. The initial
and final water temperatures are selected so that the
maximum difference between the final water
temperature and the ambient temperature is 5°K.
• The microwave power output P in watts is calculated
from the following formula :
P=
4187 x (∆T)
T
is measured while the microwave generator is
operating at full power. Magnetron filament heat-up
time is not included. (about 3 sec)
• The water is stirred to equalize temperature throughout
the vessel, prior to measuring the final water
temperature.
• Stirring devices and measuring instruments are
selected in order to minimize addition or removal of
heat.
WATER LOAD
CERAMIC PLATE
DISASSEMBLY AND ADJUSTMENT
A. OUTER CASE REMOVAL
Remove the screw
Remove the screw
1) Disconnect the power supply cord from the outlet.
2) Remove the screws from the rear of the case.
The outer case must be moved backward to be lifted
off.
securing
screw
securing
screw
ground
screw
B. POWER SUPPLY CORD
1) Remove the outer case.
2) Disconnect two terminals, and remove one screw of
the ground terminal.
C. CONTROL PANEL ASSEMBLY RMOVAL
1) Open the door.
2) Remove the screw for securing the control panel.
3) Disconnect the leadwire from RELAY (RY3)
of the PCB SUB ASS’Y.
4) Disconnect the leadwire from connector (CN1) of the
PCB SUB ASS’Y.
5) Lift up and pull out control panel assembly carefully
from the cavity.
Lift up and pull out control panel
Lift up and pull out control panel
CAUTION: DISCHARGE THE HIGH VOLTAGE
CAPACITOR BEFORE SERVICING
(refer to page 2-1)
5-3
Remove
Remove choke
choke cover
cover
D. PCB ASSEMBLY REMOVAL
1) Remove the control panel assembly from the
cavity. (Refer to control panel assembly removal
on previous page.)
2) Remove screws which hold the PCB SUB ASSÕY to
the control panel.
3) Disconnect the flat cable from the PCB SUB
ASSÕY and take off the PCB SUB ASSÕY
PCBAsm
Sub Asm
PCB Sub
Control Panel
Control Panel
Key Membrane
Remove
Remove door
door
Doorseal
sealplate
plate
Door
Button Spring
Door Open Button
Release Lever
E. DOOR MAIN ASSEMBLY REMOVAL
1) Open the door.
2) Remove the choke cover cap very carefully with a flat-blade
screwdriver.
CAUTION: Be careful not to damage door seal plate
by screwdriver.
3) Lift up and push the door.
NOTE:
1. After replacing the door, be sure to check that the
primary switch, monitor switch, and secondary switch
operate normally.
2. After replacing the door, check for microwave energy
leakage with a survey meter. Microwave energy must
be below the limit of 4 mW/cm2. (with a 275 ml water
load)
3. When mounting the door assembly to the oven
assembly, be sure to adjust the door assembly parallel
to the chassis. Also adjust so the door has no play
between the inner door surface and oven frame
assembly. If the door assembly is not mounted
properly, microwaves may leak from the clearance
between the door and the oven.
Spacer
Spacer
5-4
F. MAGNETRON REMOVAL
G. REMOVING THE STIRRER
FAN MOTOR
1) Disconnect the leadwire from the magnetron.
2) Carefully remove the mounting screws holding the
magnetron and the waveguide.
3) Remove the magnetron ASS’Y until the tube is
clear from the waveguide.
NOTE:
1. When removing the magnetron, make sure its
dome does not hit any adjacent parts, or it may be
damaged.
2. When replacing the magnetron, be sure to install
the magnetron gasket in the correct position and be
sure that the gasket is in good condition.
3. After replacing the magnetron, check for microwave
leakage with a survey meter around the
Microwave energy must be below the limit of 5
mW/cm2. (With a 275 ml. water load).
Make sure that gasket is rigidly attached to the
magnetron. To prevent microwave leakage, tighten
the mounting screws properly, making sure there is
no gap between the waveguide and the magnetron.
1) Disconnect the leadwire from the stirrer fan motor
terminals.
2) Remove the screw securing the stirrer fan motor to
the oven cavity ASS’Y
3) After repairing the motor, replace the removed
leadwire.
NOTE:
1. Remove the wire lead from the stirrer fan motor
VERY CAREFULLY.
2. Be sure to grasp the connector, not the wires, when
removing.
Stirrer fan motor
Magnetron
5-5
H. HIGH VOLTAGE TRANSFORMER
REMOVAL
H. HIGH
VOLTAGE TRANSFORMER
1) Discharge the high voltage capacitor.
REMOVAL
2) Disconnect the leadwire from magnetron, high voltage
K. INTERLOCK SYSTEM
1) INTERLOCK MECHANISM
K. INTERLOCK
SYSTEM
The door lock mechanism
is a device which has
transformer,
andvoltage
capacitor.
1) Discharge
the high
capacitor.
3)
Remove
the
screw
holding
the high voltage
2) Disconnect the leadwire
from magnetron,
high voltage
transformer
to
the
baseplate.
transformer, and capacitor.
3) Remove the screw holding the high voltage
I. FAN MOTOR
ASSEMBLY
REMOVAL
transformer
to the bottom
plate.
1) Discharge the high voltage capacitor.
2) DisconnectMOTOR
the leadwire
from fan motor, REMOVAL
noise filter
I. BLOWER
ASSEMBLY
and high voltage capacitor.
1) Disconnect
from
blower
3) Removethe
the leadwire
two screws
holding
themotor.
the suction guide
2) Remove
the
two
screws
holding
the
blower
ASS’Y to the oven cavity and remove
themotor
high voltage
to the
bottom
plate.
diode earth screw.
4) Remove the two screws holding the fan motor ASS’Y
to theVOLTAGE
suction guide ASS’Y.
J. HIGH
CAPACITOR AND
DIODE REMOVAL
J. HIGHthe
VOLTAGE
AND
1) Discharge
high voltageCAPACITOR
capacitor.
DIODE
2) Disconnect
theREMOVAL
leadwire from high voltage capacitor.
3) Remove
the screw
holding
thecapacitor.
high voltage diode
1) Discharge
the high
voltage
earth
screw. the leadwire from fan motor, noise filter
2) Disconnect
4) Remove
the screw
the high voltage capacitor
and high
voltageholding
capacitor.
bracket.
3) Remove the screw holding the suction guide ASS’Y to
the oven cavity and remove the high voltage diode
earth screw.
4) Remove the screw holding the high voltage capacitor
bracket.
SECONDARY
SWITCH
Suction
Guide
MONITOR
SWITCH
H.V. Capacitor
H.V.Diode
H.V. Transformer
MONITOR
SWITCH
H.V.
Capacitor
H.V.
Transformer
Bottom plate
oven door will not have any play in it when the door
• Mount
the latch b oard to the oven assembly.
is closed.
• •Adjust
thethe
latch
board screw.
in the arrow direction so that
Tighten
mounting
door
notinhave
any play
in it when
door
•oven
Check
forwill
play
the door
by pushing
thethe
door
isrelease
closed.button. Door movement should be less
• Tighten
the
mounting
screw.
than 0.5
mm.
(1/64 inch)
• Check
for play
in the
door button
by pushing
the door
Don't push
the door
release
while making
this
adjustment.
Make
suremovement
that the latch
movesbe less
release
button.
Door
should
smoothly
after(1/64
adjustment
than
0.5 mm.
inch) is completed and that the
screws
are
tight.
Make
sure button
the primary,
Don't push the door release
whilemonitor,
making this
and
secondary
switches
operate
properly
by
adjustment. Make sure that the latch moves
following
the
continuity
test
procedure.
smoothly after adjustment is completed and that the
screws are tight. Make sure the primary, monitor,
and secondary switches operate properly by
following
the continuity test procedure.
ADJUSTMENT
DIRECTION
ADJUSTMENT
DIRECTION
Fan Motor ASS'Y
H.V. Capacitor bracket
been specially
designed to eliminate completely
1) INTERLOCK
MECHANISM
microwave
activity
when the
door
is opened
The door lock mechanism
is a
device
which during
has
cooking
and
thus
to
prevent
the
danger
resulting
been specially designed to eliminate completely
from the microwave
leakage.
microwave
activity when
the door is opened during
2) MOUNTING OF THE PRIMARY/MONITOR/
cooking and thus to prevent the danger resulting
SECONDARY SWITCHES TO THE LATCH
from the microwave leakage.
BOARD
2) MOUNTING OF THE PRIMARY/MONITOR/
3) INSTALLATION AND ADJUSTMENT OF THE
SECONDARY
SWITCHES TO THE LATCH
LATCH BOARD TO THE OVEN ASSEMBLY
BOARD
3)• Mount
INSTALLATION
OF THE
the latch b AND
oard ADJUSTMENT
to the oven assembly.
LATCH
BOARD
TO
THE
OVEN
ASSEMBLY
• Adjust the latch board in the arrow direction so that
PRIMARY
PRIMARY
SWITCH
SWITCH
H.V.
Diode
Blower motor assembly
SECONDARY
SWITCH
5-6
INTERLOCK CONTINUITY TEST
WARNING : FOR CONTINUED PROTECTION AGAINST EXCESSIVE RADIATION
EMISSION, REPLACE ONLY WITH IDENTICAL REPLACEMENT PARTS.
TYPE NO. SZM-V 21-FC-93 FOR PRIMARY SWITCH
TYPE NO. SZM-V 16-FD-62 OR V-16-2C 25 FOR MONITOR SWITCH
TYPE NO. SZM-V 16-FD-63 OR V-16-3C 25 FOR SECONDARY SWITCH
B. SECONDARY INTERLOCK SWITCH TEST
A. PRIMARY INTERLOCK SWITCH TEST
Disconnect the wire lead from the secondary
switch.
Connect the ohmmeter leads to the common
(COM) and normally open (NO) terminals of the
switch. The meter should indicate a open circuit in
the door open condition. When the door is closed,
meter should indicate an closed circuit. When the
secondary switch operation is abnormal, make the
necessary adjustment or replace the switch only
with the same type of switch.
When the door release button is depressed slowly
with the door closed, an audible click should be
heard at the same time or successively at
intervals. When the button is released slowly, the
latches should activate the switches with an
audible click.
If the latches do not activate the switches when
the door is closed, the switches should be a
adjusted in accordance with the adjustment
procedure. Disconnect the wire lead from the
primary switch. Connect the ohmmeter leads to
the common (COM) and normally open (NO)
terminal of the switch. The meter should indicate
an open circuit in the door open condition.
When the door is closed, the meter should
indicate a closed circuit.
When the primary switch operation is abnormal,
make the necessary adjustment or replace the
switch only with the same type of switch.
COMPONENTS
SWITCHES
(Wire leads removed)
C. MONITOR SWITCH TEST
Disconnect the wire lead from the monitor switch.
Connect the ohmmeter leads to the common
(COM) and normally closed (NC) terminals of the
switch. The meter should indicate closed circuit in
the door open condition. When the door is closed,
meter should indicate an open circuit. When the
monitor switch operation is abnormal, replace with
the same type of switch.
NOTE: After repairing the door or the interlock
system, it is necessary to do this continuity
test before operating the oven.
TEST PROCEDURE
Check for continuity of the
switch with an Ohm-meter
Primary
Switch
Monitor
Switch
RESULTS
Door
open
Door
closed
NO
COM
NC
COM
Secondary
Switch
NO
COM
NOTE : After checking for the continuity of switches, make sure that they are
connected correctly.
5-7
COMPONENT TEST PROCEDURE
COMPONENT TEST PROCEDURE
CAUTIONS
CAUTIONS
1.
DISCONNECT THE POWER SUPPLY CORD FROM THE OUTLET WHENEVER REMOVING THE
1. OUTER
DISCONNECT
THE POWER
SUPPLY
CORD FROM
THE OUTLET
WHENEVER
REMOVING THE
CASE FROM
THE UNIT.
PROCEED
WITH THE
TEST ONLY
AFTER DISCHARGING
THE HIGH
OUTER
CASE
FROM
THE
UNIT.
PROCEED
WITH
THE
TEST
ONLY
AFTER
DISCHARGING
THE
HIGH
VOLTAGE CAPACITOR AND REMOVING THE WIRE LEADS FROM THE PRIMARY WINDING OF
THE
VOLTAGE
CAPACITOR
AND
REMOVING
THE
WIRE
LEADS
FROM
THE
PRIMARY
WINDING
OF
THE
HIGH VOLTAGE TRANSFORMER. (SEE PAGE 2-1)
HIGH
VOLTAGE TRANSFORMER.
(SEE
PAGE 2-1) ENERGY MUST BE DONE WITH A LOAD (1 LITER
2. ALL
OPERATIONAL
CHECKS WITH
MICROWAVE
2. ALL OPERATIONAL CHECKS WITH MICROWAVE ENERGY MUST BE DONE WITH A LOAD (1 LITER
OF WATER IN CONTAINER) IN THE OVEN.
OF WATER IN CONTAINER) IN THE OVEN.
COMPONENTS
COMPONENTS
TESTTEST
PROCEDURE
PROCEDURE
RESULTS
RESULTS
HIGH
HIGH VOLTAGE
VOLTAGE
TRANSFORMER
TRANSFORMER
(Wire
(Wire leads
leads removed)
removed)
SECONDARY
TERMINAL
FILAMENT
WINDING
PRIMARY
TERMINAL
RCS10
Approx.: 0.3~0.5 ohm
Approx.: 100~120 ohm
RCS10
Less than: 1 ohm RFS12
1. Measure
the resistance.
1. Measure
the resistance.
(Ohm-meter
scale:
Rx1
and Rx100)
(Ohm-meter scale: Rx1
and
Rx100)
¥
Primary
winding
Approx.: 0.3~0.5 ohm
Approx.: 0.1~0.3 ohm
• Primary winding
RFS12
¥
Secondary
winding
Approx.:
100~120
ohm
Approx.: 70~90 ohm
• Secondary winding
¥
Filament
winding
Approx.:
0.1~0.3
Less
than:
1
ohm
Lessohm
than: 1 ohm
• Filament winding
Approx.: 70~90 ohm
2. Measure the resistance.
Less than: 1 ohm
2. Measure the resistance.
(Ohm-meter scale: Rx1000)
(Ohm-meter scale: Rx1000)
¥ Primary winding to ground
Normal: Infinite
• Primary winding to ground
Normal: Infinite
¥ Filament winding to ground
Normal: Infinite
• Filament winding to ground
Normal: Infinite
MAGNETRON
MAGNETRON
(Wire leads removed)
(Wire leads removed)
1. Measure the resistance.
1. Measure
the resistance.
(Ohm-meter
scale: Rx1)
(Ohm-meter
scale:terminal
Rx1)
¥ Filament
• Filament terminal
2. Measure the resistance.
2. Measure
the resistance.
(Ohm-meter
scale: Rx1000)
(Ohm-meter
scale:toRx1000)
¥ Filament
chassis
• Filament to chassis
5-8
Normal: Less than 1 ohm
Normal: Less than 1 ohm
Normal: Infinite
Normal: Infinite
COMPONENTS
TEST PROCEDURE
RESULTS
Antenna
Antenna
Gasket
Gasket
Chassis
Chassis
Filament
Filament
NOTE: When testing the magnetron, be sure to install the magnetron gasket
in the correct position and be sure that the gasket is in good condition.
HIGH VOLTAGE
CAPACITOR
HIGH VOLTAGE
DIODE
NOTE :
Some inexpensive meters
may indicate infinite
resistance in both direction.
Measure the resistance.
(Ohm-meter scale: Rx1000)
¥ Terminal to terminal.
Normal: Momentarily indicates
several ohms, and
then gradually returns
to infinite.
Measure the resistance.
(Ohm-meter scale: Rx1000)
¥ Terminal to case.
Normal: Infinite.
Measure the continuity (Forward).
(Ohm-meter scale: Rx10000)
Normal: Continuity.
Abnormal: Infinite.
Measure the continuity (Reverse).
(Ohm-meter scale: Rx10000)
Normal: Infinite.
Abnormal: Continuity.
5-9
COMPONENTS
RELAY 3
TEST PROCEDURE
Check for continuity of relay 3 an
ohm-meter.
(Remove wire leads from relay 3 and
operate the unit.)
RESULTS
POWER
LEVEL
1
2
3
4
5
6
7
8
9
10
3 sec
4 sec
5 sec
6 sec
7 sec
8 sec
9 sec
10 sec
11 sec
12 sec
9 sec
8 sec
7 sec
6 sec
7 sec
4 sec
3 sec
2 sec
1 sec
0 sec
Relay 3
BLOWER MOTOR
(Wire leads removed)
Measure the resistance.
(Ohm-meter scale: R x 100)
Normal: Approx. 14~21 ohm
Abnormal: Infinite or several
K-ohm.
STIRRER
MOTOR
(Wire leads removed)
Measure the resistance.
(Ohm-meter scale: R x 1000)
Normal: Approx. 3~3.5 kohm
Abnormal: Infinite or several
ohm.
NOTE : • A MICROWAVE LEAKAGE TEST MUST ALWAYS BE PERFORMED WHEN THE UNIT IS
SERVICED FOR ANY REASON.
• MAKE SURE THE WIRE LEADS ARE IN THE CORRECT POSITION.
• WHEN REMOVING THE WIRE LEADS FROM THE PARTS, BE SURE TO GRASP THE
CONNECTOR, NOT THE WIRES.
5-10
TROUBLESHOOTING
SHOOTING
TROUBLE
WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF
WHEN YOU GET A COMPLAINT FROM YOUR CUSTOMER, EVALUATE THE COMPLAINT CAREFULLY. IF
THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE
THE FOLLOWING SYMPTOMS APPLY, PLEASE INSTRUCT THE CUSTOMER IN THE PROPER USE OF THE
MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL.
MICROWAVE OVEN. THIS CAN ELIMINATE AN UNNECESSARY SERVICE CALL.
CAUTIONS
CAUTIONS
1. Check grounding before checking for trouble.
1.2.Check
grounding
checking
for trouble.
Be careful
of the before
high voltage
circuit.
2.3.Be
careful ofthe
thehigh
highvoltage
voltage
circuit. (See page 2-1)
Discharge
capacitor.
3.4.Discharge
the high
capacitor.
(See page
2-1)
When checking
thevoltage
continuity
of the switches
or of
the high voltage transformer, disconnect one lead wire
4. When
the
continuity
of the
switches
or the
of the
transformer,
disconnect
one lead
from checking
these parts
and
then check
continuity
with
AChigh
plug voltage
removed.
To do otherwise
may result
in a wire
from
parts
thento
check
with the AC plug removed. To do otherwise may result in a
falsethese
reading
or and
damage
your continuity
meter.
reading
damage
meter.
5.false
Do not
touchorany
part of to
theyour
circuit
on the PCB since static electric discharge may damage this control
5. Do
not touch any part of the circuit on the PCB since static electric discharge may damage this control
panel.
panel.
Always touch yourself to ground while working on this panel to discharge any static charge built up in your
Always
touch yourself
to ground while working on this panel to discharge any static charge built up in your
body. (Micom
model only)
body. (Micom model only)
CONDITION
CONDITION
CAUSE
CAUSE
REMEDY
REMEDY
Microwave oven
does not work.
Microwave
oven
does not work.
Inserting many plugs into one
outlet andmany
usingplugs
them into
at the
Inserting
one
same and
time.using them at the
outlet
(blowntime.
fuse or breaker)
same
(blown fuse or breaker)
Microwave oven plug is not
inserted tightly.
Microwave
oven plug is not
Avoid using other electrical
appliances
when
you
use the
Avoid using
other
electrical
microwave
appliancesoven.
when you use the
microwave oven.
inserted tightly.
Low AC input voltage.
securely.
Use the microwave oven at
adequate line voltage.
Use the microwave oven at
adequate line voltage.
This may not be a defect.
It is possible that the food
This may
not be a
should
be cooked
fordefect.
a
It
is
possible
that
longer time period. the food
should be cooked for a
longer time period.
Do not use metallic ware for
cooking except that noted in
Docooking
not useguide.
metallic ware for
the
cooking except that noted in
the cooking guide.
Do not use any type of
cookware with metallic
Do not use any type of
trimming.
cookware with metallic
1.trimming.
Use plastic wrap or lid.
2. Stir once or twice while
soup,
cocoa
or
1.cooking
Use plastic
wrap
or lid.
etc. or twice while
2.milk,
Stir once
cooking soup, cocoa or
Thismilk,
mayetc.
be cause
incomplete connect to H.V.
transformer.
Output power is too low.
Output power is too low.
Low AC input voltage.
Food temperature is too low.
Food temperature is too low.
Sparks occur.
Sparks occur.
Uneven cooking.
Uneven cooking.
Using metallic ware and
allowing it to touch the oven
Using
wall. metallic ware and
allowing it to touch the oven
wall.
Ceramic ware trimmed in
gold or silver powder is used.
Ceramic ware trimmed in
gold or silver powder is used.
Inconsistent intensity of
microwave by their
characteristics.
Inconsistent
intensity of
microwave by their
characteristics.
Display "CALL SERVICE"
5-11
Insert microwave oven plug
securely.
Insert microwave oven plug
(TROUBLE 1) The following visual conditions indicate a probable defective control circuit.
1. Incomplete segments.
¥ Segment missing.
¥ Partial segment missing.
¥ Digit flickering (NOTE: Slight flickering is normal.)
2. Colon does not turn on or blink.
3. A distinct change in the brightness of one or more numbers in display.
4. One or more digits in the display are not lighting.
5. Display indicates a number different from one touched, for example, key in 5 and 3 appears in the display.
6. Specific numbers (for example 7 or 9) will not display when key pad is touched.
7. Display does not count down with time blinking or up with clock operation.
8. Display obviously jumps in time while counting down.
9. Display counts down too fast while cooking.
10. Each indicator light does not turn on after setting cooking cycle.
11. Display time of day does not reappear when cooking is finished.
CONDITION
CHECK
1. No input can be
programmed.
Check the connection between
membrane key
assembly and
PCB assembly.
Continuity
Defective PCB
assembly.
Replace PCB
assembly.
No continuity
Loose
connection.
Connect them
tightly.
Replace key
membrane
assembly and
check operation.
Everything works
as specified.
Defective key
membrane
assembly.
Replace key
membrane
assembly.
Defective PCB
assembly.
Replace PCB
assembly.
2. Some inputs
cannot be
programmed.
3. Display shows a
number or figure
different from one
touched.
RESULT
Still have trouble.
4. Random
programming
when touching
other pads.
5. Display is fixed
at some figure
and can not
accept any
input.
5-12
CAUSE
REMEDY
(TROUBLE 2) Oven does not operate at all, Display window does not display any figures,
(TROUBLE 2)and
Oven
does isnot
operate at all, Display window does not display any figures,
no input
accepted.
and no input is accepted.
CONDITION
CONDITION
1. Fuse blows.
1. Fuse blows.
CHECK
CHECK
Check continuity
continuity
ofCheck
monitor
of
monitor
switch (with
switch
(with
door
closed).
door closed).
RESULT
RESULT
Continuity.
Continuity.
CAUSE
CAUSE
Malfunction of the
Malfunction
of the
monitor
switch.
monitor switch.
No continuity.
No continuity.
Replace fuse
Replace fuse
Check continuity
Check continuity
of primary
of primary
switch (with
switch (with
door opened).
door opened).
Continuity.
Continuity.
Check
Checkcontinuity
continuity
ofofsecondary
secondary
switch
switch(with
(with
door
dooropened).
opened).
Continuity.
Continuity.
Disconnect
Disconnectone
one
side
sideofofthe
thewire
wire
lead
leadconnected
connected
from
fromtransformer
transformer
totothe
thehigh
highvoltage
voltage
capacitor
capacitorand
and
operate
operatethe
theunit.
unit.
Measure
Measuretoto
resistance
resistancehigh
high
voltage
voltagecapacitor
capacitor
(refer
(refertotopage
page5-9)
5-9)
Shorted contact at
Shorted contact at
the primary switch.
the primary switch.
No continuity.
No continuity.
Malfunction
Malfunction of
of
secondary
secondary switch.
switch.
No
Nocontinuity.
continuity.
Fuse
Fuseblows
blowsagain
again
Defective
Defective high
high voltvoltage
transformer.
age transformer.
REMEDY
REMEDY
Replace fuse,
Replace monitor,
fuse,
primary,
secondary
primary, monitor,
switches,
and
secondary
RELAY(RY3)
switches, and
of
P.C.B Assembly.
RELAY(RY2)
of
P.C.B Assembly.
Replace fuse,
primary,
Replace monitor,
fuse,
secondary
primary,
switches, monitor,
and
secondary )
RELAY(RY3
switches,
and
of
P.C.B Assembly.
RELAY(RY2) of
P.C.B Assembly.
Replace
Replace fuse,
fuse,
primary, monitor,
primary, monitor,
secondary
secondary
switches,
and
RELAY(RY3)
switches, and
RELAY(RY2)
of
of
P.C.B Assembly.
P.C.B Assembly.
Replace
voltReplace high
high voltage
transformer.
age transformer.
Normal.
Normal.
Set is good condition
(defective fuse only)
Normal.
Normal.
Abnormal.
Abnormal.
Defective
Defective high
high
voltage
voltage capacitor.
capacitor.
Replace high
voltage capacitor.
NOTE: All
: Allthese
theseswitches
switchesmust
mustbe
bereplaced
replacedatatthe
thesame
sametime.
time.Refer
Referto
to page
page 5-7,
5-7, 5-8
5-8
NOTE
Fuse
does
2. 2.
Fuse
does
notnot
blow.
blow.
Checkcontinuity
continuity
Check
of
thermostat.
of thermostat.
Nocontinuity.
continuity.
No
Defective
Defective
thermostat.
thermostat.
Replace
thermostat.
Defective power
power
Defective
supply
cord.
supply cord.
Replace power
power
Replace
supply
cord.
supply cord.
Continuity.
Continuity.
Checkcontinuity
continuity
Check
powersupply
supply
ofofpower
cord.
cord.
Nocontinuity.
continuity.
No
5-13
(TROUBLE 3) Display shows all figures set, but oven does not start cooking while desired
(TROUBLE 3)program
Display times
showsare
all set
figures
but pad
ovenisdoes
not start cooking while desired
and set,
START
touched.
program times are set and START pad is touched.
CONDITION
CONDITION
CHECK
CHECK
1. Setting time
1. Setting
time
does
not count
does
not
down when count
down when
touching
START
touching START
pad.
pad.
Check continuity
continuity
of Check
secondary
of
secondary
switch (with
switch
(with
door
closed).
door closed).
Check the conCheck the connection between
nection between
CN1 connector
CN1 connector
and PCB
and PCB
assembly.
assembly.
2. Blower
2. Fan motor
motor or
or oven
oven lamp
lamp do
do not
on.
not turn
turn on.
RESULT
RESULT
No continuity.
No continuity.
CAUSE
CAUSE
REMEDY
REMEDY
Defective
Defective switch.
secondary
secondary switch.
Replace
Replace switch.
secondary
secondary switch.
Continuity.
Continuity.
Continuity
Continuity
Defective PCB
Defective PCB
assembly.
assembly.
Replace PCB
Replace PCB
assembly.
assembly.
No continuity
No continuity
Loose connection.
Loose connection.
Connect them
Connect them
tightly.
tightly.
Check
blower
Check
fan motor.
motor.
Abnormal
Abnormal
Defective
blower
motor.
Defective
fan motor.
Replace
blower
motor.
Replace
fan motor.
Check
ovenoven
lamp.
Check
lamp.
Abnormal
Abnormal
Defective
oven
lamp.
Defective
oven
lamp.
Replace
oven
lamp.
Replace
oven
lamp.
Normal
Normal
(TROUBLE
4)4)
Oven
(TROUBLE
Ovenseems
seemstotobebeoperating
operatingbut
butlittle
littleheat
heatisisproduced
producedin
inoven
ovenload.
load.
CONDITION
CONDITION
Output
is low
Output
is low
CHECK
CHECK
Check
the
Check
the
power
source
power
source
voltage.
voltage.
RESULT
RESULT
CAUSE
CAUSE
REMEDY
REMEDY
Lower
Lowerthan
than90%
90%ofof
rating
ratingvoltage.
voltage.
Decrease
Decreaseininpower
power
source
sourcevoltage
voltage
with
withload.
load.
Suggest
Suggestcustomer
customer
contact
contactlocal
local
electric
electricpower
power
utility
utilityco.
co.or
or
qualified
qualified
electrician.
electrician.
DefectivePCB
PCB
Defective
assembly.
assembly.
ReplacePCB
PCB
Replace
assembly.
assembly.
Defective
Defective
magnetron.
magnetron.
Replace
Replace
magnetron.
magnetron.
Normal
Normal
Disconnect
the
Disconnect
the
wire
leads
from
wire
leads
from
relay
relay
3 2 and
check
on and off
and
check
ontime
andwith
off time
multitester.
with
multitester.
Measure
Measure
thethe
output
power.
output power.
Abnormal
Abnormal
Normal
Normal
Abnormal
Abnormal
NOTE
: Simple
test
power
output-conductedbybyheating
heatingone
oneliter
literwater
waterfor
forone
onemin.
min.ififavailable.
available.
NOTE
: Simple
test
of of
power
output-conducted
Minimum
8.5¡C
temperature
rise
is
normal
condition.
Minimum 8.5°C temperature rise is normal condition.
5-14
(TROUBLE 5) No microwave oscillation even though oven lamp and blower motor run.
(Display
operates
properly)even though oven lamp and fan motor run.
(TROUBLE 5)
No microwave
oscillation
(Display operates properly)
CONDITION
CHECK
RESULT
CAUSE
REMEDY
CONDITION
CHECK
RESULT
CAUSE
REMEDY
No microwave
oscillation.
No microwave
oscillation.
Disconnect the
wire leads from
Disconnect the
relay 3 and check
wire leads from
continuity
relay 3
relay 2ofand
check continuity
(Operate
the unit)
of relay 2.
(Operate the unit)
Check high volCheck
high voltage
transformer
tage transformer
No continuity.
No continuity.
Defective PCB
assembly.PCB
Defective
assembly.
Replace PCB
assembly.
Replace
PCB
assembly.
Continuity.
Continuity.
Abnormal
Abnormal
Defective high
Defective
voltage high
voltage
transformer.
transformer.
Replace high
Replace
voltagehigh
voltage
transformer.
transformer.
Normal
Normal
Check high volCheck high voltage
tagecapacitor.
capacitor.
Abnormal
Abnormal
Defective high
Replace high
Defective high
voltagecapacitor.
capacitor.
voltage
Replace high
voltage
capacitor.
voltage
capacitor.
Defectivehigh
high
Defective
voltagediode.
diode.
voltage
Replace
high
Replace
high
voltage
diode.
voltage
diode.
Defective
Defective
magnetron.
magnetron.
Replace
Replace
magnetron.
magnetron.
Normal
Normal
Check
Checkhigh
highvolvoltage
tagediode.
diode.
Abnormal
Abnormal
Normal
Normal
Check
Check
magnetron.
magnetron.
Abnormal
Abnormal
NOTE : ¥ Make sure the wire leads correct position.
NOTE
: • Make sure the wire leads correct position.
¥ When Removing the wire leads from the parts, be sure to grasp the connector, not the wires.
• When Removing the wire leads from the parts, be sure to grasp the connector,, not the wires.
¥ When removing the magnetron, be sure to install the magnetron gasket in the correct position
• When removing the magnetron, be sure to install the magnetron gasket in the correct position
and in good condition.
and in good condition.
Output is full power
Output
full power
whenis you
set lower
when
you level.
set lower
power
power level.
Disconnect the
Disconnect
wire leadsthe
from
wire
leads
from
relay
2 and
check
continuity
relay 2.
relay
3 and check
(Operaterelay
the unit)
continuity
3
(Operate the unit)
Abnormal.
Abnormal.
5-15
Defective PCB
Defective PCB
assembly.
assembly.
Replace PCB
Replace PCB
assembly.
assembly.
#EV#
EXPLODED VIEW
INTRODUCTION
MODEL : RCS10PBDA
RFS12G
OVEN CAVITY PARTS
INTERIOR PARTS
BASE PLATE PARTS
DOOR PARTS
LATCH BOARD PARTS
CONTROL PANEL PARTS
6-1
#EV#
EXPLODED VIEW
INTRODUCTION
MODEL : RCS10A
RCS10MPA
RCS10MPSA
RFS10SW2A
RFS12MPSA
RFS12SW2A
OVEN CAVITY PARTS
INTERIOR PARTS
BASE PLATE PARTS
DOOR PARTS
LATCH BOARD PARTS
CONTROL PANEL PARTS
6-2
#EV#
DOOR PARTS
MODEL : RCS10A
RCS10MPA
RCS10MPSA
RCS10PBDA
RFS10SW2A
RFS12SW2A
RFS12MPSA
RFS12G
1013
1005
1004
1385
1002
1000
W136
1006
1007
W108
1384
1009
W206
1386
W207
6-3
W105
#EV#
CONTROL PANEL PARTS
MODEL : RCSPBDA
RFS12G
2012
W102
2381
2006
W130
2000
2005
2400
6-4
#EV#
CONTROL PANEL PARTS
MODEL : RCS10PBDA
2012
W102
2381
2002
2006
W130
2000
2005
2400
6-5
#EV#
CONTROL PANEL PARTS
MODEL : RCS10A
RCS10MPA
2004
W102
2381
2006
2002
W130
2000
6-6
#EV#
CONTROL PANEL PARTS
MODEL : RCS10SW2A
RCS10MPSA
RFS10SW2A
RFS12MPSA
RFS12SW2A
2004
W102
2381
2006
W130
2000
6-7
#EV#
OVEN CAVITY PARTS
MODEL : RCS10PBDA
RCS10A
RCS10MPA
RCS10MPSA
RFS10SW2A
RFS12SW2A
RFS12MPSA
RFS12G
W158
5045
W109
3001
W121
W109
W121
W105
3009
W109
5024
3004
9000
W109
7037
W108
6-8
#EV#
LATCH BOARD PARTS
MODEL : RCS10PBDA
RCS10A
RCS10MPA
RCS10MPSA
RFS10SW2A
RFS12SW2A
RFS12MPSA
RFS12G
4001
W102
4003
4009
W117
4008
4002
4004
4000
6-9
#EV#
INTERIOR PARTS
MODEL : RCS10PBDA
RCS10A
RCS10MPA
RCS10MPSA
RFS10SW2A
RFS12SW2A
RFS12MPSA
RFS12G
5014
W108
5010
5201
W101
3381
W109
W108
5102
W109
5016
W136
9000
W101
3028
W101
3031
W109
5104
W108
W108
5103
W101
5202
W108
W101
W109
W109
5059
5203
W105
5041
5009
5001
5067
W104
5020
5000
5302
5046
5061
5019
5018
W101
5051
W101
5008
6-10
#EV#
BASE PLATE PARTS
MODEL : RCS10PBDA
RCS10A
RCS10MPA
RCS10MPSA
RFS10SW2A
RFS12SW2A
RFS12MPSA
RFS12G 6001
W121
6000
3901
W162
3902
3026
W121
6013
W108
6-11