Download PS Service Manual

MAINTENANCE MANUAL
PS SERIES
MODELS: PS-3000, PS-6000, PS-12K, PS-30K
PS-3000S, PS-6000S, PS-15KS, PS-30KS
CONTENTS
1. INTRODUCTION
2. SPECIFICATIONS
2.1 SYSTEM BLOCK DIAGRAM
2.2 PHYSICAL LAYOUT OF ELECTRICAL CONNECTION
2.3 GENERAL SPECIFICATIONS
3. INITIAL SETUP
3.1 INTERNAL FUNCTION AND SETTING METHODS
3.2 AUTO AND DEALER CALIBRATION PROCEDURES
3.3 DISABLE CALIBRATION WITH DIP SW. (S1)
3.4 OFFSET AND SPAN VALUE DATA
3.5 FLOW CHART
4. TROUBLE SHOOTING
4.1 TROUBLE SHOOTING LOOP
4.2 PARTS AND COMPONENTS TROUBLE SHOOTING
5. ELECTRICAL CIRCUITRY
5.1 SCHEMATICS
5.2 PCB LAYOUT
6. BILL OF MATERIAL
7. APPENDIX
APR. 2001 REV 1
Specifications and Function Subject to Change without Notice
1
1. INTRODUCTION
The PS series is designed according to IP-65 protection requirements
to assure working properly under toughest environment.
Ender users should be advised not to undertake any troubleshooting
except those listed on the operation manual.
This maintenance manual containsof certain information that may result
in fraudulent use. Do not release any part of this manual to any end
users or un-authorized persons.
The internal DIP S/W should beso set to prevent un-authorized settings
or alternations.
Should a load cell has been replaced, make sure that the protection
devices are properly set.
After servicing, it is necessary to go throughall tests and procedures
to ensure the scale meets all the meteorological and approval
requirements.
Here are some features of the PS series
1.
2.
3.
4.
5.
6.
7.
8.
Zero indicator
Tare indicator
Negative value indicator
Subtractive tare function.
Power on zero function.
Manual zero function.
Auto Power Saving Function
Dual power: - By built-in rechargeable battery and external AC/DC
power adaptor.
9. Low battery warning signal.
10. Dual color charge status indicator.
11. 2 Types of Calibration
12. Overload protection against positive and negative force
13. AC/DC power adaptor, adjustable feet included.
14. Dip Switch to prevent end-user calibration
15. Optional EL backlight facility.
2
2. SPECIFICATION
2.1 SYSTEM BLOCK DIAGRAM
LCD
LCD DRIVER
LOAD
CELL
E+
ES+
S-
A/D UNIT
CPU
with ROM
POWER SUPPLY:
AC ADAPTOR
(9V/500mA)
RECHARGEABLE
BATTERY (6V 4Ah)
KEYBOARD
(8 KEYS)
Description:
When an article is placed on the platter, the load of the article is
applied to the load cell inside the scale.
The resistance to the excitation current in the strain gauge will then
changed and the analog output signal varies.
It is amplified and digitized continuously by the A/D converter into
a digital signal. Subsequently, the resulting count is processed and
managed by the CPU. The CPU refers to the instructions from the keyboard,
and then conveys the output data to LCD driver, which formats the data
into readout on the display panels.
3
2.2 PHYSICAL LAYOUT OF ELECTRICAL CONNECTION
LOAD CELL
DC JACK
RECHARGEABLE
BATTERY
6V 4Ah
MAIN BOARD
4
2.3 GENERAL SPECIFICATION
2.3.1 Overall View
5
2.3.2 Overall Dimension:
280(W) x 330(D) x 455(H)mm
2.3.3 Platter Size:
280 X 330mm
2.3.4 Model Specifications
Model Number
PS-3000
PS-6000
PS-12K
PS-30K
PS-3000S
PS-6000S
PS-15KS
PS-30KS
Tare Range
Power on Zero Range
Manual Zero Range
Operation
Environment
Power Consumption
Power Source
Weight
Capacity
3000g
6000g
12kg
30kg
3000g
6000g
15kg
30kg
Division
0.5g
1g
2g
5g
1g
2g
5g
10g
Full Tare
¡10%F.S.
¡2%F.S.
0o~40oC (32o~104oF),
Non-condensed. R.H.¡ 85%
Normal = 0.1W Charging = 5W
Built-in Rechargeable Battery, or AC/DC Power
Adaptor:DC9V 500mA
Net/Gross Weight: 8.4/9.4kg
2.3.5 Main Components Used
Microprocessors: 89C51
Crystal Oscillator: 6MHz
Display Device: WTN Liquid Crystal Display
5 1/2 digits,25mm height
Load Cell Used: PS-3000,6000,12K,30K
TEDEA 1022 Model
PS-3000S,6000S,15KS,30KS
NMB CB030 Model
Load Cell Capacity: PS-3000 = 7kg
PS-6000 = 10kg
PS-15
= 20kg
PS-30
= 35kg
6
2.3.6 Analog Specification
Input sensitivity: 2mV/V
Zero Drift: 0.02% R.O./10oC
Zero Balance Range: ¡2% of rate capacity
Load Cell Excitation Voltage: DV5V
A/D Conversion Speed: 10 times/second
Internal Resolution: 30000
7
3. INITIAL SETUP
3.1 INTERNAL FUNCTIONS AND SETTING METHODS
INTERNAL FUNCTION TABLE
Function
1
2
3
4
HOW
a.
b.
c.
d.
e.
f.
g.
h.
Symbol
F.1
F.2
F.3
F.4
Description
Span value reading and dealer calibration
Full display segment and max. capacity check
Check offset value and scale configuration
Auto power off setting
TO ENTER THE REQUIRED FUNCTION MODE
Turn scale off.
Press and hold TARE, then turn scale on. Scale display F.1
Press TARE until the required function number ap
pears.
Press MODE
Press MODE until the required setting appears.
Press TARE to confirm.
Repeat step c to f for other function setting, or
Press ZERO to save settings and return to normal operation.
F.1 Span Value Reading and Dealer Calibration
a. Simply enter F.1 to read the A/D counts.
b. Press ZERO to clear the A/D counts, apply test mass onto platter,
the span value of test mass will be displayed.
c. Refer to Dealer Calibration procedures for dealer calibration.
F.2 Display Segment and Rated Capacity & Division Check
When function is entered, all segments will be displayed.
Check and make sure that no segments are missed.
F.3 Total Internal Count Checking and Scale Configuration
a. Enter F.3, scale displays the Offset Value when unloaded.
b. Apply extra load onto platter, the total internal count value will
be displayed.
SELECT WEIGHT UNITS
a. Press and hold MODE until the weight unit appears.
b. To employ all (metric and pound) weight units, press MODE until
lb appears. To disable pound weight unit, press MODE until kg
appears.
c. Press ZERO to save setting and back to normal operation status.
8
F.4 Auto Power Off Setting
Two modes are available: (Default=4_OFF)
0._OFF = Auto Power Off function is disabled.
4._OFF = Scale will automatically be turned off after 4minutes
unused.
3.2 AUTO AND DEALER CALIBRATION PROCEDURES
ACCEPTABLE LOAD FOR AUTO AND DEALER CALIBRATION
Model Number
External
Acceptable Auto and Dealer
Division
Calibration Load
PS-3000
1/6000
*2kg
1kg
PS-6000
1/6000
*4kg
2kg
PS-12K
1/6000
*10kg
5kg
PS-30K
1/6000
*20kg
10kg
PS-3000S
1/3000
*2kg
1kg
PS-6000S
1/3000
*4kg
2kg
PS-15KS
1/3000
*10kg
5kg
PS-30KS
1/3000
*20kg
10kg
* Recommended calibration load
Dealer Calibration Procedures:
1. Turn scale off.
2. Press and hold TARE, then turn scale on.
3. Scale displays F.1
4. Press MODE
5. Scale displays offset value
6. Press ZERO
7. Press TARE
8. Press ZERO
9. Press TARE
10.Press ZERO, scale displays a circle at the right hand of the display.
It means the scale is ready for dealer calibration. Make sure that
the figure being displayed is =0 or 1, If not, press ZERO again.
11.Load calibration either load as listed on above table.
12.When value displayed is stable, press MODE.
13.Wait until the scale starts countdown.
14.Calibration completed and scale is ready for operation.
Auto Calibration Procedures:
1.
2.
3.
4.
Turn scale off
Press and hold MODE, then turn scale on.
Scale displays CAL?
Press MODE
9
5.
6.
7.
8.
Scale displays LOAD XXXX or XXXX
Load calibration load according to above table.
Wait until the scale display DONE and starts count down.
Calibration completed and scale is ready for operation.
3.3 DISABLE CALIBRATION AND AVOIRDUPOIS WEIGHT UNITS WITH DIP SW. (S1)
The DIP SW.#1 is used to control calibration and avoirdupois weight
units. Push this switch to ON position to disable calibration.
3.4 OFFSET AND SPAN VALUE DATA
OFFSET AND SPAN VALUE DATA TABLE
Model
Number
Offset
Value
(Thousand)
PS-3000 10~14
PS-6000 10~14
PS-12K
10~14
PS-30K
10-14
PS-3000S 10~14
PS-6000S 10~14
PS-15KS 10~14
PS-30KS 10-14
Span Value(Thousand) at
Various Load Applied
10~15
10~15
10-15
10~15
10~15
10~15
10-15
10~15
at
at
at
at
at
at
at
at
1kg
2kg
5kg
10kg
1kg
2kg
5kg
10kg
20~30
20~30
20-30
20~30
20~30
20~30
20-30
20~30
at
at
at
at
at
at
at
at
2kg
4kg
10kg
20kg
2kg
4kg
10kg
20kg
Offset
Control
VR1
VR1
VR1
VR1
VR1
VR1
VR1
VR1
Trimmer
Trimmer
Trimmer
Trimmer
Trimmer
Trimmer
Trimmer
Trimmer
Span
Control(Ohm)
R1A
47K
40K
25K
25K
47K
40K
25K
25K
READING OFFSET VALUE
1
Turn scale off
2
Remove all load from platter
3
Enter F.3 and read the offset value
READING SPAN VALUE
1
Turn scale off
2
Remove all load from platter
3
Enter F.1
4
Press ZERO
5
Apply load to platter. Span value according to load applied will
be displayed.
HOW TO ADJUST OFFSET VALUE
In case the offset value is out of range, adjust the trimmer located
at VR1 on the main board to obtain correct offset value.
HOW TO ADJUST SPAN VALUE
The span value is controlled by resistor located on R1A, standard
resistor value of R1A is listed on the above table. If the required
span value is not attained, then change R1A resistor according to either
case below:
Span value too low: Increase the resistance of R1A.
Span value too high: Decrease the resistance of R1A.
10
3.5 FLOW CHART
3.5.1 Auto Calibration (for end-user)
START
DISPLAY
"YES"
PRESS "MODE"
& "ON/OFF"
LCD
PANORAMA
DISPLAY
"LOAD"
DISPLAY
FULL SCENE
DISPLAY
"XXXX"
RELEASE
"ON/OFF" KEY
DISPLAY
"or"
CALIBRATING?
DISPLAY
"CAL.?"
DISPLAY
"XXXX"
RELEASE
"MODE" KEY
PUT A ASSIGNED
WEGHT ON PLATTER
"MODE"=YES
"ZERO" =NO
PRESS "MODE"
OR "ZERO" KEY
NO
YES
CORRECT WEIGHT
ASSIGNED?
CALIBRATING?
YES
DISPLAY
"DONE"
NO
DISPLAY
"no"
DISPLAY
"99999"
DISPLAY
"99999"
DISPLAY
"00000"
DISPLAY
"00000"
DISPLAY
"
0"
NO
WEIGHT STILL
ON THE PLATTER?
YES
STANDBY FOR
OPERATION
DISPLAY
"XXXX"
"XXXX"=ASSIGNED WEIGHT
11
3.5.2 Function Test (for technicians only)
START
PRESS "TARE"
& "ON/OFF"
LCD PANORAMIC VIEW
RELEASE
"ON/OFF" KEY
S
RELEASE
"TARE" KEY
99999
COUNT DOWN
F1
11111
F1
00000
O ther
" MODE "
PRESS K E Y ?
S
<-
0.00 kg
"TARE"
l
F2
STANDBY FOR
OPERATION
F2
12
l
D ISPLAY
"X X X X ".
xxxx:Show offset
NO
k
PRESS "ZERO " ?
YES
TEST
KEYBOARD
CAL.
LOOP
A /D _ > 0 + / - 3
counts
k
k :key code
0
K ey in
Private C ode
NO
PRESS K E Y C O D E
:1 ,2 ,1 ,2
SW IT C H OFF ?
NOTE :
¡ @
YES
1: TARE key
NO
END
LEGITIMATE
PROCEDURE
2: ZERO key
C
j
YES
0
0
" 0 " A ccept
Private
C ode
D ISPLAY
SPA N V A L U E
PUT ON THE
ASSIGNED
WEIGHT
DIP SW. #1
> ON?
NO
j
YES
NO
PRESS "M O D E " ?
YES
k
NO
WEIGHT
ASSIGNED
C
YES
DONE
S
13
F2
F2
Other
s
"TARE"
PRESS KEY?
"MODE"
X X .X X :Capacity
AXX.XX
L.C.D
PANORAMIC
VIEW
"M O D E"
other
PRESS
KEY?
F3
S
"TARE"
F3
F1
other
S
"TARE"
PRESS K E Y ?
F4
"MODE"
WEIGHT UNIT CHANGED:
kg<--->kg/lb
14
F4
F4
" TARE "
other
F1
PRESS K E Y ?
"M ODE
A uto shut-off
w hen notin
use for 4 m in.
4_oFF
S
other
PRESS K E Y ?
"TA R E "
F1
"M ODE "
0_oFF
No
A uto shut-off
15
4. TROUBLE SHOOTING
4.1 TROUBLE SHOOTING LOOP
POWER ON
NO DISPLAY
COUNT DOWN?
CHECK POWER SUPPLY,
CPU,LCD,KEYBOARD
OK
COUNTS AND
THEN ZERO?
OK
GHOST
PROPER READOUT?
CHECK POWER
SUPPLY,LCD,LCD
DRIVER IC,R18~21
OK
INCORRECT
RE-CALIBRATE
THE SCALE
CORRECT READOUT?
OK
DISPLAY RANDOM
FIGURE
CHECK CPU,LCD,
LCD DRIVER IC
SHOW ¡00000¡
CHECK LOAD CELL,
A/D UNIT,OFFSET
VALUE
UNSTABLE
CHECK PLATTER
STOPPER,LOAD
CELL,A/D UNIT,
BAD SOLDERING
CAN¡T REACH THE
FULL CAPACITY
CHECK PLATTER
STOPPER,LOAD
CELL,OFFSET
VALUE
NORMAL OPERATION
16
4.2 PARTS AND COMPONENTS TROUBLE SHOOTING
4.2.1 Power Supply Checking
4.2.1.1 Relevant parts:
Main Board (PS-10-X)
Q1 (C1061)
ZD1(8.2V)
BR1(W04/1A)
Q4 (A1515)
Q2 (C945)
Q5 (A733)
R30(1.2 ohm, 1/2W)
U1 (IC 4027)
U3 (LM358)
ZD2(3.3V)
17
Description:
1) AC Adaptor: This AC Adaptor provides power for DC9~12V,500
mA.
2) Battery: Built-in Rechargeable Battery 6V/4Ah
3) How Battery is charged completely?
The charging voltage is regulated by Q1 (C1061) and ZD1 (8.2V) for
about 7 volts.
The charging current will go down automatically when voltage reached.
Q2(C945) and R30(1.2R, 1/2W) provide Over-Current protection.
4) +5V power drives digital circuit system.
+5V power is created by U3B(LM358) with negative feedbacktechnology.
5) +5V & -5V power drives analog circuit system.
U12(AIC1722-50) and U11(IC 7660) are used to create +/-5V power.
6) Auto-off:
If the scale is set on 4_oFF or even under LO-BAT situation, after
some minutes the CPU will release apositive pulse signal to change
the U1(IC 4027) output state then makes Q4 cut-off, the scale will
be shut off immediately.
7) Low Power Detection:
U3A(LM358) is acted as a voltage comparator. When battery power
is less than 5.5V, it will release a low potential signal to CPU,
then CPU will instruct LCD display to show LO-BAT symbol.
4.2.1.2 Input voltage: 5.5V or higher
Check and recharge battery if voltage less than 5.5V.
Check DC-JACK or AC Adaptor if been defective.
18
4.2.1.3 System voltage (Vcc): 5V +/- 10%
Check that the system voltage is within 5V +/- 10%
a) less than 4.5V, the CPU may not work properly.
b) more than 6V, ghost will appear on LCD.
4.2.2 Platter Stopper Checking
The platter device shall not touch anything around itself during
operation. Check that the platter is not contacted with the upper
(no load) and/or lower (with load) stopper.
4.2.3 LCD Display Checking
4.2.3.1 Check that it is soldered and connected properly between LCD
and driver IC (uPD7225), driver IC (uPD7225) and CPU.
4.2.3.2 Check whether LCD is broken.
4.2.4 CPU Checking
4.2.4.1 Check that all pins are seated properly into the socket.
4.2.4.2 Check that the Crystal Oscillator works.
4.2.4.3 Check the RESET is normally low.
4.2.5 A/D Unit Checking
4.2.5.1 Check that the +3.3V & +/-5V powers are correctly fed to the
A/D unit.
4.2.5.2 Check that the signal output of loadcell is normal.
4.2.5.3 Check OP. Amplifiers & A/D Converter (AD7715).
When no error is found with the above checking procedures, the trouble
can be caused on the loadcell or the PCB itself. Replace a new one
could be better to identify the defective.
In this way, the readout of weight would be varied because of the output
voltage of loadcell and different span value, so re
-calibration is
required after this replacement.
19
5. ELECTRICAL CIRCUITRY
5.1 SCHEMATICS
20
21
22
5.2 PCB LAYOUT
PS-10-2
BOTTOM OVERLAY
PS-10-2
TOP OVERLAY
23
PS-10-2
PS-10-2
TOP LAYER
BOTTOM LAYER
24
6. BILL OF MATERIAL
STRUCTURE
Parts No. Description
A00590*****
A0950000011
A5001000312
A60********
F0001PS1100
F0001PS1000
F0002PW0000
F0003PS1100
F0003PS1101
F0003PS1102
F0003PS1103
F0004PS1000
F0009000035
F0029PS1000
G0004BW1000
G0004PS1000
G0004PW0100
G0005BW1000
G0030PS1020
X1PS1000000
Z0011200420
Z0014100508
Z0014100625
Z0015100406
Z0015100410
Z6BW1000010
A0906000210
A0950000010
A1204040250
A1208020351
Specification
LOADCELL
1022 or CB030
CABLE CONNECTOR
LTW-6FM-90
MOVABLE BUSHING
PS SERIES (AMB-1S)
ADAPTOR
*** V/ 9V 500mA
S/S HOUSING(UPPER)
PS SERIES
S/S HOUSING(UNDER)
PS SERIES
S/S PLATTER
PW SERIES
LOAD CELL SUPPORT ¢ PW SERIES
LOAD CELL SUPPORT ¢ PW SERIES
LOAD CELL SUPPORT ¢ PS SERIES
LOAD CELL SUPPORT ¢ PS SERIES
S/S PILLAR
PS SERIES, L SHAPE
S/S PLATE
PS SERIES, PILLAR SUPPORT
S/S ADJUSTABLE FEET COVER
PS SERIES
ADJUSTABLE FEET
BW SERIES
PLASTIC FOOT
£ 8-10h
RUBBER TUBE
PW SERIES
PLATTER BEARING RUBBER
BW SERIES
RUBBER PLUG
PS SERIES
OPERATION MANUAL
PS SERIES
S/S SCREW (Ny -Lock) M4x20
SCREW
M5x8
S/S SCREW
M6x25
S/S SCREW
M4x6
S/S SCREW
M4x10
PACKING MATERIAL
PM/BW SERIES
D C JA C K
S C D -21
C O N N E C T O R (W A TER P R O O F) LTW-6MS-C
WIRE ARRAY
4 PIN 25cm
BATTERY WIRE ARRAY
2PIN 35 cm, SINGLE HOUSING
INDICATOR STRUCTURE
Parts No.
Description
Specification
A1600060400
C1PS1******
C1PS1000000
E1PS1000011
F0003PS0000
F0005PS1000
F0005PS1100
F0013FS0000
F0022000010
G0030FS0000
6V / 4Ah
PS SERIES
PS SERIES (8 HOLES)
PS-10-X
PS SER IES
PS SERIES
PS SERIES
NBS/FS/1705/PS
FS INDICATOR FIXING
DC JACK SC D -021
RECHARGEABLE BATTERY
OVERLAY PANEL PC
PC PLATE
P.C.B. KIT
S/S M O U N TIN G PLATE
S/S DISPLAY H O U SIN G
S/S DISPLAY H O U SIN G
S/S BATTERY PLATE
S/S ADJUSTABLE FEET
RUBBER PLUG
Qty
1
1
1
1
1
1
1
1
1
1
1
1
1
4
4
1
4
4
1
1
6
6
4
6
10
1
1
1
1
1
Qty
1
1
1
1
1
1
1
1
2
1
Remark
UPPER
UNDER
UPPER
UNDER
Remark
FRONT
REAR
25
G0030PS1000
G0030PS1010
G0030PS1030
Z0010000306
Z0010000308
Z0010001305
RUBBER PACKING
RUBBER FRAME
RUBBER PACKING
SCREW
SCREW
SCREW
PS SERIES
PS SERIES
PS SERIES £ 21(£ 15.3)x5L
M3x5
M3x8
3x5 TAPPING
6
1
1
6
2
5
MAINBOARD
Parts No.
Description
Specification
E0PS1000000
A0202093461
A0203077450
A0205040270
A0206000071
A0206000072
A0206003580
A0207017223
A0208072250
A0300000040
A0401001060
A0401007330
A0401009450
A0401015150
A0501004002
A0501004148
A0502000001
A0503020033
A0503020082
A0625050000
A0701108016
A0701477016
A0701106016
P.C.B.
I.C.
I.C.
I.C.
I.C.
I.C.
I.C.
VOLTAGE REGULATOR
I.C.
I.C. SO C K E T
TRANSISTOR
TRANSISTOR
TRANSISTOR
TRANSISTOR
D IO D E
D IO D E
BRIDGE RECTIFIER
ZEN ER
ZEN ER
L.E.D.
CAPACITOR (EC)
CAPACITOR (EC)
CAPACITOR (EC)
PS-10-X
93C46
AD7715AN-3
4027
OP-07CP
OP-177
LM358N
AIC-1722-33CZT
UPD7225G
40 PIN
2SC1061
A733
2SC945
2SA1515
1N4002
1N4148
W 04/1A
3.3V
1/2W 8.2V
GREEN/RED,ROUND,5 £
1000uF/16V
470uF/16V
10uF/16V
1
1
1
1
1
1
1
1
1
1
1
3
2
1
1
1
1
1
1
1
1
1
8
A0701106016
A0713474063
A0720103101
A0730104050
CAPACITOR
CAPACITOR
CAPACITOR
CAPACITOR
10uF/16V
0.47uF/63V(105)
0.01uF/100V(103J)
104Z
6
3
1
28
A0740020050
A0803041002
A0803042502
A0803044002
A0804041003
A0804041272
A0805020120
CAPACITOR (CC )
METAL FILM RESISTOR
METAL FILM RESISTOR
METAL FILM RESISTOR
METAL FILM RESISTOR
METAL FILM RESISTOR
CARBON FILM RESISTOR
20pF
10K£
25K£
40K£
100K£
27K£
1.2£
2
2
1
1
5
1
1
(TC)
(MEF)
(PEI)
(M LC)
1/4W
1/4W
1/4W
1/4W
1/4W
1/2W
Qty
Remark
U8
U6
U1
U5
U4
U3
U2
U9
U7
Q1
Q3,5,6
Q2,7
Q4
D2
D1
BR1
ZD2
ZD1
LED 1
C30
C32
C16,20,24,25,27
28,36,47
C13,37,39,42,43,44
C7,8,10
C1
C 2-6,9,11,12,14,15,
17,21-23,26,29,31,
33-35,38,40-41,45,
46,48-50
C18-19
R8,11
R7
R10
R2-6
R44
R30
26
A0805021101
A0805041102
A0805041103
CARBON FILM RESISTOR 100£
CARBON FILM RESISTOR 1K£
CARBON FILM RESISTOR 10K£
1/2W
1/4W
1/4W
1
2
9
R27
R14,32
R13,15,18-20,22,
36,39,49
R33,35,46
R34
R17
R31
R21
R26,28
R24,41,42,45
R29,38
R16,23,37,40,43
VR1
NR1
J2,3,7
J2,J8
LCD
X1
S1
SW 1-8
EL1
IN 1
BZ1
L1-2
A0805041105
CARBON FILM RESISTOR 1M£
1/4W
3
A0805041205
CARBON FILM RESISTOR 2M£
1/4W
1
A0805041334
CARBON FILM RESISTOR 330K£
1/4W
1
A0805041153
CARBON FILM RESISTOR 15K£
1/4W
1
A0805041203
CARBON FILM RESISTOR 20K£
1/4W
1
A0805041221
CARBON FILM RESISTOR 220£
1/4W
2
A0805041223
CARBON FILM RESISTOR 22K£
1/4W
4
A0805041471
CARBON FILM RESISTOR 470£
1/4W
2
A0805041473
CARBON FILM RESISTOR 4.7K£
1/4W
5
A0801001203
TRIM M ER
3006P-001-203 (20K )
1
A0802047309
RESISTOR NETWORK
47K£
9 PIN
1
A0902010020
C O N N E C T O R (POWER) 2 PIN W A FFER
3
A0910000080
C O N N E C T O R (FPC )
8 PIN (ZIF)
2
A0910100130
SO C K E T STRIPS
SIP 1*13 (FEMALE)
2
A1100260000
C R Y STA L
6.0M H Z
1
A1301000002
D IP SW .
DS-02 (4 PIN)
1
A1306000003
T A C T SW .
K PT-1104B
8
A1400000006
B A C K LIG H T
130*44m m
1
A1401005120
IN V E R T E R
5V TO 120V
1
A1500000004
B U ZZER
OBO-15210
1
A5005000110 JUMPER
10m m
2
A0102000289
L.C.D.
G289
1
A0201089511
I.C.
89C51
1
============================================================================
27
7. APPENDIX
PARTS EXPLOSION:
28
ITEM
PART NUMBER
PART NAME
SPECIFICATION
1
F0002PW0000
S/S PLATTER
PW/PS SERIES
1
2
F0001PS1100
S/S HOUSING (UPPER)
PS SERIES
1
3
G0004PW0100
RUBBER TUBE
PW/PS SERIES
4
4
G0005BW1000
PLATTER BEARING RUBBER
BW/PS SERIES
4
5
F0003PS110*
LOAD CELL SUPPORT (UNDER)
PS SERIES
6
A0071000***
LOAD CELL
7
F0003PS1100
LOAD CELL SUPPORT (UPPER)
PS SERIES
1
8
F0009000035
S/S PLATE
PILLAR SUPPORT
1
9
F0001PS1000
S/S HOUSING (UNDER)
PS SERIES
1
10
A5001000312
MOVABLE BUSHING
PS(AMB-1S)
11
QTY
1
1
NAME PLATE
1
2
12
F0029PS1000
S/S ADJUSTABLE FEET COVER
PS ADJUSTABLE FEET
4
13
G0004BW1000
ADJUSTABLE FEET
BW/PS SERIES
4
14
F0004PS1000
S/S PILLAR
G0004PS1000
PLASTIC FOOT
PS SERIES
¡ 8-10h
1
15
16
A5001000301
CABLE TIE
CV-120S
1
17
F0003PS0000
S/S MOUNTING PLATE, U SHAPE
INDICATOR FIXING
1
18
F0022000010
S/S ADJUSTABLE FEET
INDICATOR FIXING
2
19
G0030PS1020
RUBBER PLUG
PS SERIES
1
20
A0950000011
CABLE CONNECTOR (FEMALE)
LTW-6FM
1
21
A0950000010
NUT
LTW-6MS-C
1
22
A0906000210
RUBBER PLUG
SCD-21
1
23
A0906000210
NUT
SCD-21
2
24
F0005PS1100
S/S DISPLAY HOUSING (REAR)
PS SERIES
1
25
A0950000010
CABLE CONNECTOR (MALE)
1
26
G0030PS1030
RUBBER PACKING
LTW-6MS-C
PS SERIES £ 21(£ 15.3)x5L
27
A0906000210
DC JACK
SCD-21(BLACK)
1
28
A1208020351
BATTERY WIRE ARRAY
2 PIN,35cm
1
29
G0030FS0000
RUBBER RING
SCD-21
1
30
A1600060400
RECHANGEABLE BATTERY
GP4-6 6V,4Ah
1
31
F0013FS0000
S/S BATTERY PLATE
FS/1705L/PS
1
32
G0030PS1010
RUBBER FRAME
PS SERIES
1
33
E1PS1000011
P.C.B
PS-10-X
1
34
A0102000289
L.C.D.
UTN-G289JV
1
35
C1PS1000000
PC PLATE (8 HOLES)
PS SERIES
1
36
G0030PS1000
RUBBER PACKING
PS SERIES
6
37
F0005PS1000
S/S DISPLAY HOUSING (FRONT)
PS SERIES
1
38
C1PS1XXXXX
OVERLAY PANEL PC
PS SERIES
1
39
Z0015100410
S/S SCREW
M4*10
10
40
Z0014000625
S/S SCREW
M6*25
4
41
Z0011000420
S/S SCREW
M4*20
6
42
Z0014000508
SCREW
M5*8
6
43
Z0015100406
S/S SCREW
M4*6
6
44
Z0010000308
SCREW
M3*8
2
45
Z0010001305
SCREW
3*5
5
46
Z0010000306
SCREW
M3*5
6
1
1
29
30
31
32
33
34
35
36
37