Download SERVICE MANUAL & TROUBLESHOOTING

SERVICE MANUAL & TROUBLESHOOTING GUIDE FOR
15EX2
BY： Richard Wang
TESTING TECHNOLOGY DEPARTMENT / TSSC
MAY. 2001
LCD MONITOR 15EX2 MAINTENANCE
CONTENTS
1. 15EX2
..……………………………………………
……………………………………………..………… 2
15EX2 Production Specification…………………
Specification…………………..
2. Definition and Location of Connectors & Jumpers……………………………………………………
.. 13
Jumpers……………………………………………………..
3. Location of Major Components....…
.....…
…..……
Components....…...............…
...............…...................…………………
...................………………….....
..……..……….
……….…... 18
4. Pin Descriptions Of Major Components…
…...…
Components….......…
.......…...………………………
...………………………..………….......
………….......…
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…….. 19
5. Assembly & Disassembly..........................…
...……
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……........
........………
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Disassembly..........................…...........…
...........….….....………
.....………...
......….. 26
6. 15EX2 Block Diagram…………………………
..…………………………………..……..……………… 35
Diagram…………………………..
7. Trouble Shooting......…
.........…
…...………
....... 37
Shooting......….................…
.................….….…..……
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..........……….......
8. Spare Parts List…
.................…………
…………..…..…
List….....…
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...…………………… 50
9. Exploded View…
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……… 54
View….....…
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10. 15EX2 InterfaceInterface-board Schematics
Key Switch Board Schematics
Power Jack Board Schematics
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LCD MONITOR 15EX2 MAINTENANCE
1. 15EX2-TA Product Specification
1.1 SCOPE
The MiTAC 15EX2-TA (TFT with analog signal input) is a high resolution (max. resolution 1024 X 768) color LCD
monitor which uses 15” high contrast TFT-LCD panel.
This monitor supplies user with following features:
On screen display adjustment function
DPMS power saving function
VESA standard compatible ME design
Swivel function of display panel
Plug & Play (DDC1/2B) function
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LCD MONITOR 15EX2 MAINTENANCE
1.2 MAIN CHARACTERISTICS
1.2.1 LCD PANEL:(The detailed spec. please refer to Sharp LD-11904D
document)
LCD panel: 15” color TFT-LCD
Model no.: Sharp LQ150X1DG51
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LCD MONITOR 15EX2 MAINTENANCE
1.2.2 SIGNAL INPUT CABLE:
High density 15 pins “D” type, male connector cable.
1.2.3 VIDEO SIGNAL:
Max. 80 MHz bandwidth
Input video voltage range: 0.6~0.95 Vp-p, typ.: 0.7 Vp-p
Impedance: 75 Ω ± 5% / 50 pF(max.)
1.2.4 SCAN FREQUENCY:
Horizontal frequency: 24.8 ~ 60 kHz
Vertical frequency: 56 ~ 75 Hz
Polarity (positive or negative): 3V ~5V
Input impedance: 470 Ω(min.)/ 1000 pF(max.)
1.2.5 SYNC PROCESS:
Separate SYNC is acceptable.
1.2.6 SWIVEL:
Up/Down: 25°/-3°.
1.2.7 PLUG & PLAY:
DDC1/DDC2B
1.2.8 EXTERNAL CONTROLLER & OUTLET:
LCD control key: MENU, SELECT,- , +, POWER.
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LCD MONITOR 15EX2 MAINTENANCE
1.2.9 AC INPUT POWER:
Max. 264 Vac/50 Hz, Min. 90 Vac/60 Hz
Normal 100 ~240 Vac/60 ~50 Hz
1.2.10 POWER SAVING FUNCTION & INDICATOR COMPLY WITH VESA
DPMS
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LCD MONITOR 15EX2 MAINTENANCE
1.2.11 COMPATIBLE TIMING CHART:
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LCD MONITOR 15EX2 MAINTENANCE
1.2.12 OSD ADJUSTED FUNCTION :
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LCD MONITOR 15EX2 MAINTENANCE
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LCD MONITOR 15EX2 MAINTENANCE
Color Temperature Definition:
Key definition :
Menu, Select, Left (Decrease, ←), Right (Increase,→ ) and Power 5 keys.
Select Key : Only one shot of Select Key is available. (Continuous pressing is not available.)
←, → Key : Continuous pressing is available.
Key Operation :
Pushing "Menu" key, the OSD window will pop out. The default value will focus on the first icon.
Keep pushing "Menu" key, the highlight will go to next item. The sequence is "DISP ADJUSTMENT"menu
→ "WHITE BALANCE" menu → "COLOR ADJUSTMENT" menu → "MISC" menu.
The different icon will come out different OSD items. Using "Select" key can choose different item. The
"Decrease" and "Increase" keys will change the value for that item which is selected by "Select“ key.
Display Message :
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LCD MONITOR 15EX2 MAINTENANCE
Message :
Message Displayed Position :
(SCREEN)
ADJUSTING
NO SIGNAL
Secret Key Operation :
AGING : "Menu" + "Select" + "Right(->)" and "Power" ON
VERSION : "Menu" + "Left(<-)" + "Right(->)" and "Power" ON
Version Displayed Position :
MODEL NAME : LCD-15MAT
VERSION : R00
CKS : XXXX
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LCD MONITOR 15EX2 MAINTENANCE
OSD OFF time :
OSD Value: Each OSD value is memorized on EEPROM.
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LCD MONITOR 15EX2 MAINTENANCE
1.3 HARDWARE SYSTEM BLOCK DIAGRAM
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LCD MONITOR 15EX2 MAINTENANCE
1.4. POWER SUPPLY (AC-ADAPTER)
Model name: API-208-98010L
Note 1: 68%(min.) at full load, 115Vac/60Hz
Note 2: No max. limits but in hot start shall no damage & Fuse could not open.
Note 1: The ripple and regulation shall be maintained in the SPEC for all combinations of below condition:
min. & max. output current.
min. & max. AC input voltage.
min. & max. AC input frequency.
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LCD MONITOR 15EX2 MAINTENANCE
2. Definition & Location Of Connectors & Jumpers
15EX2 Interface Board
JP2
J1 : VGA Input Cable Connector.
J2 : Panel VDD Selector.
J3
JP5
J3 : 40 Pins To LCD Module Connector.
J4 : 20 Pins To LCD Module Connector.
J4
J6
JP1 : To DC Jack Board Power Connector.
JP2 : To Key Switch Board Connector.
JP5 : To Inverter Board Connector.
J2
J1
JP1
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LCD MONITOR 15EX2 MAINTENANCE
2. Definition & Location Of Connectors & Jumpers
Invertor Board
U1
CN3
T1
CN2
T3
CN1
CN5
T4
U2
T1
CN5
CN1 : Inverter Board Connector.
CN2,CN3,CN4,CN5 : Inverter BD to LCD panel Connector.
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LCD MONITOR 15EX2 MAINTENANCE
2. Definition & Location Of Connectors & Jumpers
Power Board
J1
Key Switch Board
SW5
J2
SW2
SW3
SW4
SW6
D1
SW1
JP1
J1 : Power Adaptor BD Connector.
SW1 : Power Button.
SW3,SW4 : OSD Select Button.
J2 : Power Adaptor Connector.
SW2,SW5 : Adjust Button. SW6 : Auto Button.
D1 : Power Indicator.
Power Board J1
Menu Buttons
Select Buttons
/ Button
Auto Button
Power Indicator
Power Button
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LCD MONITOR 15EX2 MAINTENANCE
2. Definition & Location Of Connectors & Jumpers
Key SW BD
CONN
Inverter BD
CONN
40 Pins
LCD
CONN
From LCD Panel
20 Pins
LCD
CONN
External VGA
CONN
Power Jack BD
CONN
J1
From LCD Panel
J2
AC Adapter
AC SOURCE
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LCD MONITOR 15EX2 MAINTENANCE
3. Location Of Major Components
15EX2 Interface Board
U10
U1 : gmZAN1 Flat Panel Monitor Controller IC.
U11
U2 : 74F14 Hex Schmitt Trigger Inverters.
U7
U3 : M52347 (N/A).
U14
U1
U5 : 24C21 EDID.
U6 : HIP6013 Switch Regulator.
U7 : EZ1084CT Linear Regulator.
U8
U6
U5
U2
U10 : 24LC16B Configuration Data.
U11 : M6759 Micom.
Micom.
U14 : 74HCT74 Dual DD-type FlipFlip-Flop.
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LCD MONITOR 15EX2 MAINTENANCE
4. Pin Description Of Major Components
4.1 gmZAN1 Flat Panel Controller IC
Features
The gmZAN1 device utilizes Genesis’
Genesis’ patented thirdthird-generation Advanced Image Magnification technology
as well as a proven integrated ADC/PLL to provide excellent image
image quality within a costcost-effective SVGA /
XGA LCD monitor solution.
As a pinpin-compatible replacement for the gmB120, the gmZAN1 incorporates all
all of the gmB120 features
plus many enhanced features; including 1010-bit gamma correction, Adaptive Contrast Enhancement (ACE)
filtering, Sync On Green (SOG), and an enhanced OSD.
Features
~ Fully integrated 135MHz 88-bit tripletriple-ADC, PLL, and prepre-amplifier
~ gmZ2 scaling algorithm featuring new Adaptive Contrast Enhancement (ACE)
~ OnOn-chip programmable OSD engine
~ Integrated PLLs
~ 1010-bit programmable gamma correction
~ Host interface with 1 or 4 data bits
~ PinPin-compatible with gmB120
Integrated Analog Front End
~ Integrated 88-bit triple ADC
~ Up to 135MHz sampling rates
~ No additional components needed
~ All color depths up to 2424-bits/pixel are supported
HighHigh-Quality Advanced Scaling
~ Fully programmable zoom
~ Independent horizontal / vertical zoom
~ Enhanced and adaptive scaling algorithm for optimal image quality
quality
~ Recovery Mode / Native Mode
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LCD MONITOR 15EX2 MAINTENANCE
Input Format
~ Analog RGB up to XGA 85Hz
~ Support for Sync On Green (SOG)
~ Support for composite sync modes
Output Format
~ Support for 8 or 66-bit panels (with high quality dithering)
~ One or two pixel output format
Built In HighHigh-Speed Clock Generator
~ Fully programmable timing parameters
~ OnOn-chip PLLs generate clocks for the onon-chip ADC and pixel clock from a single reference
oscillator
AutoAuto-Configuration / AutoAuto-Detection
~ Phase and image positioning
~ Input format detection
Operating Modes
~ Bypass mode with no filtering
~ Multiple zoom modes:
- with filtering
- with adaptive (ACE) filtering
Integrated OnOn-Screen Display
~ OnOn-chip character RAM and ROM for better customization
~ External OSD supported for greater flexibility
~ Supports both landscape and portrait fonts
~ Many other font capabilities including: blinking, overlay and transparency
transparency
Package
~ Cooperate with “ SiS Video Bridge ”to Support
Applications
~ MultiMulti-synchronous LCD monitors
~ Other fixedfixed-resolution pixelated display devices
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LCD MONITOR 15EX2 MAINTENANCE
4.1 gmZAN1 Flat Panel Controller IC
Figure 1. gmZAN1 Pin Diagram
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LCD MONITOR 15EX2 MAINTENANCE
4. Pin Description Of Major Components
4.1 gmZAN1 Flat Panel Controller IC -1
Unless otherwise stated, unused input pins must be tied to ground, and unused output pins left open.
Pin
Name
I/O
77 ADC_VDD2
78 ADC_GND2
79 ADC_VDD1
80 ADC_GND1
81 SUB_GNDA
82 ADC_GNDA
84 ADC_VDDA
83 Reserved
85 ADC_BGNDA
88 ADC_BVDDA
86 BLUE87 BLUE+
89 ADC_GGNDA
In
In
92 ADC_GVDDA
90 GREEN91 GREEN+
93 ADC_RGNDA
In
In
Drive Current
(@10pF)
A n a lo g -to -D ig ita l C o n v erter
P in
Nam e
Description
96
ADC_RVDDA
Digital power for ADC encoding logic. Must be
bypassed with 0.1 uF capacitor to pin 78
(ADC_GND2)
Digital GND for ADC encoding logic. Must be
directly connected to the digital system ground
plane.
Digital power for ADC clocking circuit. Must be
bypassed with 0.1 uF capacitor to pin 80
(ACD_GND1)
Digital GND for ADC clocking circuit. Must be
directly connected to the digital system ground
plane.
Dedicated pin for substrate guard ring that protects
the ADC reference system. Must be directly
connected to the analog system ground plane.
Analog ground for ADC analog blocks that are
shared by all three channels. Includes bandgap
reference, master biasing and full scale adjust. Must
be directly connected to analog system ground plane.
Analog power for ADC analog blocks that are shared
by all three channels. Includes bandgap reference,
master biasing and full scale adjust. Must be
bypassed with 0.1 uF capacitor to pin 82
(ADC_GNDA).
For internal testing purpose only. Do not connect.
Analog ground for the blue channel. Must be directly
connected to the analog system ground plane.
Analog power for the blue channel. Must be
bypassed with 0.1 uF capacitor to pin 85 (BGNDA).
Negative analog input for the Blue channel.
Positive analog input for the Blue channel.
Analog ground for the green channel . Must be
directly connected to the analog system ground
plane.
Analog power for the green channe. Must be
bypassed with 0.1 uF capacitor to pin
89 (ADC_GGNDA).
Negative analog input for the Green channel.
Positive analog input for the Green channel.
Analog ground for the red channel. Must be directly
connected to the analog system ground plane.
94
95
REDRED+
Analog-to-Digital Converter.
I/O
D riv e C u rren t
(@ 1 0 p F )
D escrip tio n
A n alo g p o w er fo r th e red ch an n el. M u st b e b y p assed
w ith 0 .1 u F cap acito r to p in 9 3 (A D C _ R G N D A ).
N eg ativ e an alo g in p u t fo r th e R ed ch an n el.
P o sitiv e an alo g in p u t fo r th e R ed ch an n el.
In
In
Host Interface (HIF) / External On-Screen Display
Pin
Name
I/O
98 HFS
In
103 HCLK
In
99
100
101
115
116
117
118
119
120
121
122
HDATA
RESETn
IRQ
OSD-HREF
OSD-VREF
OSD-Clk
OSD-Data0
OSD-Data1
OSD-Data2
OSD-Data3
OSD-FSW
in/out
In
out
out
out
out
in
in
in
in
in
Drive Current
(@10pF)
4 mA
4 mA
4 mA
4 mA
8 mA
123 MFB11
in/out
8 mA
124 MFB10
in/out
8 mA
102 MFB9
in/out
8 mA
104 MFB8
in/out
8 mA
105 MFB7
in/out
8 mA
Description
Host Frame Sync. Frames the packet on the serial
channel.
Clock signal input for the 3-wire serial
communication.
Data signal for the 3-wire serial communication
Resets the gmZAN1 chip to a known state when low.
Interrupt request output
HSYNC output for an external OSD controller chip.
VSYNC output for an external OSD controller chip.
Clock output for an external OSD controller chip.
Data input 0 from an external OSD controller.
Data input 1 from an external OSD controller.
Data input 2 from an external OSD controller.
Data input 3 from an external OSD controller.
External OSD window display enable. Displays data
from external OSD con troller when high.
Multi-Function Bus 11. One of twelve multi-function
signals MFB[11:0].
Multi-Function Bus 10. One of twelve multi-function
signals MFB[11:0].
Multi-Function Bus 9. One of twelve multi-function
signals MFB[11:0].
Also used as HDATA3 in a 4-bit host interface
configuration.
Multi-Function Bus 8. One of twelve multi-function
signals MFB[11:0].
Also used as HDATA2 in a 4-bit host interface
configuration.
Multi-Function Bus 7. One of twelve multi-function
signals MFB[11:0].
Also used as HDATA1 in a 4-bit host interface
configuration.
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LCD MONITOR 15EX2 MAINTENANCE
4. Pin Description Of Major Components
4.1 gmZAN1 Flat Panel Controller IC -2
Host Interface (HIF) / External On-Screen Display
Pin
Name
107 MFB5
109 MFB4
110 MFB3
111 MFB2
112 MFB1
113 MFB0
I/O
Drive Current
Description
(@10pF)
in/out
8 mA
Multi-Function Bus 5. One of twelve multi-function
signals MFB[11:0].
Internally pulled up. When externally pulled down
(sampled at reset) the chip uses an external crystal
resonator across pins 141 and 142, instead of an
oscillator.
in/out
8 mA
Multi-Function Bus 4. One of twelve multi-function
signals MFB[11:0].
in/out
8 mA
Multi-Function Bus 3. One of twelve multi-function
signals MFB[11:0].
in/out
8 mA
Multi-Function Bus 2. One of twelve multi-function
signals MFB[11:0].
in/out
8 mA
Multi-Function Bus 1. One of twelve multi-function
signals MFB[11:0].
in/out
8 mA
Multi-Function Bus 0. One of twelve multi-function
signals MFB[11:0].
Pin
Name
I/O
134 PLL_SGNDA
135 Reserved
136 PLL_SVDDA
137 DAC_SVDDA
138 DAC_SGNDA
139 SVDD
141 TCLK
in
142 XTAL
out
Clock Recovery / Time Base Conversion
Pin
Name
125 DVDD
127 DAC_DGNDA
128 DAC_DVDDA
129 PLL_DVDDA
130 Reserved
131 PLL_DGNDA
132 SUB_DGNDA
133 SUB_SGNDA
I/O
Drive Current
(@10pF)
Description
Digital power for Destination DDS (direct digital
synthesizer). Must be bypassed with a 0.1 uF
capacitor to digital ground plane.
Analog ground for Destination DDS DAC. Must be
directly connected to the analog system ground
plane.
Analog power for Destination DDS DAC. Must be
bypassed with a 0.1 uF capacitor to pin 127
(DAC_DGNDA)
Analog power for the Destination DDS PLL. Must
be bypassed with a 0.1 uF capacitor to pin 131
(PLL_DGNDA)
For testing purposes only. Do not connect.
Analog ground for the Destination DDS PLL. Must
be directly connected to the analog system ground
plane.
Dedicated pin for the substrate guard ring that
protects the Destination DDS. Must be directly
connected to the analog system ground plane.
Dedicated pin for the substrate guard ring that
protects the Source DDS. Must be directly connected
to the analog system ground plane.
143 PLL_RVDDA
144 PLL_RGNDA
145 Reserved
146 SUB_RGNDA
148 VSYNC
149 SYN_VDD
150 HSYNC/
CSYNC
in
in
Drive Current
(@10pF)
Description
Analog ground for the Source DDS PLL. Must be
directly connected to the analog system ground.
For testing purposes only. Do not connect.
Analog power for the Source DDS PLL. Must be
bypassed with a 0.1 uF capacitor to pin 134
(PLL_SGNDA)
Analog power for the Source DDS DAC. Must be
bypassed with a 0.1 uF capacitor to pin 138
(DAC_SGNDA)
Analog ground for the Source DDS DAC. Must be
directly connected to the analog system ground.
Digital power for the Source DDS. Must be bypassed
with a 0.1 uF capacitor to digital ground plane.
Reference clock (TCLK) input from the 50 Mhz
crystal oscillator.
If using an external oscillator, leave this pin floating.
If using an external crystal,
connect crystal between TCLK (141) and XTAL
(142). See MFB5 (pin 107).
Analog power for the Reference DDS PLL. Must be
bypassed with a 0.1 uF capacitor to pin 144
(PLL_RGNDA)
Analog ground for the Reference DDS PLL. Must be
directly connected to the analog system ground
plane.
For testing purposes only. Do not connect.
Dedicated pin for the substrate guard ring that
protects the Reference DDS. Must be directly
connected to the analog system ground plane.
CRT Vsync input. TTL Schmitt trigger input.
Digital power for CRT Sync input
CRT Hsync or CRT composite sync input. TTL
Schmitt trigger input.
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LCD MONITOR 15EX2 MAINTENANCE
4. Pin Description Of Major Components
4.1 gmZAN1 Flat Panel Controller IC -3
TFT Panel Interface
Pin
6
7
9
10
13
14
15
16
17
19
20
22
23
24
25
26
27
28
29
31
32
34
35
36
37
38
39
42
46
47
48
50
51
52
53
54
55
56
Name
PD47
PD46
PD45
PD44
PD43
PD42
PD41
PD40
PD39
PD38
PD37
PD36
PD35
PD34
PD33
PD32
PD31
PD30
PD29
PD28
PD27
PD26
PD25
PD24
PD23
PD22
PD21
PD20
PD19
PD18
PD17
PD16
PD15
PD14
PD13
PD12
PD11
PD10
I/O
Drive Current
(@10pF)
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
out
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
2 mA ~ 20 mA
Description
2pxl/clk 2pxl/clk 1pxl/clk 1pxl/clk
8-bit
6-bit
8-bit
6-bit
TFT
OB1
OB0
OG1
OG0
OR1
OR0
EB1
B1
EB0
B0
EG1
G1
EG0
G0
ER1
R1
ER0
R0
OB7
OB5
OB6
OB4
OB5
OB3
OB4
OB2
OB3
OB1
OB2
OB0
OG7
OG5
OG6
OG4
OG5
OG3
OG4
OG2
OG3
OG1
OG2
OG0
OR7
OR5
OR6
OR4
OR5
OR3
OR4
OR2
OR3
OR1
OR2
OR0
EB7
EB5
B7
B5
EB6
EB4
B6
B4
EB5
EB3
B5
B3
EB4
EB2
B4
B2
EB3
EB1
B3
B1
EB2
EB0
B2
B0
EG7
EG5
G7
G5
EG6
EG4
G6
G4
Pin
Name
I/O
Drive Current
(@10pF)
Description
2pxl/clk 2pxl/clk 1pxl/clk 1pxl/clk
8-bit
6-bit
8-bit
6-bit
TFT
57 PD9
out 2 mA ~ 20 mA
EG5
EG3
G5
G3
62 PD8
out 2 mA ~ 20 mA
EG4
EG2
G4
G2
63 PD7
out 2 mA ~ 20 mA
EG3
EG1
G3
G1
64 PD6
out 2 mA ~ 20 mA
EG2
EG0
G2
G0
66 PD5
out 2 mA ~ 20 mA
ER7
EG5
R7
R5
67 PD4
out 2 mA ~ 20 mA
ER6
ER4
R6
R4
68 PD3
out 2 mA ~ 20 mA
ER5
ER3
R5
R3
69 PD2
out 2 mA ~ 20 mA
ER4
ER2
R4
R2
70 PD1
out 2 mA ~ 20 mA
ER3
ER1
R3
R1
71 PD0
out 2 mA ~ 20 mA
ER2
ER0
R2
R0
43 PDispE out 2 mA ~ 20 mA This output provides a panel display enable signal that is
active when flat panel data is valid.
74 PHS
out 2 mA ~ 20 mA This output provides the panel line clock signal.
73 PVS
out 2 mA ~ 20 mA This output provides the frame start signal.
44 PCLKA out 2 mA ~ 20 mA This output is used to drive the flat panel shift clock.
45 PCLKB out 2 mA ~ 20 mA Same as PCLKA above.
The polarity and the phase of this signal are independently
programmable.
75 Pbias
out
8 mA
This output is used to turn on / off the panel bias power or
controls back-light.
76 Ppwr
out
8 mA
This output is used to control the power to a flat panel.
NOTE: Drive current of the panel output pins are programmable.
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LCD MONITOR 15EX2 MAINTENANCE
4. Pin Description Of Major Components
4.1 gmZAN1 Flat Panel Controller IC -4
Test Pins
Pin
Name
3 PSCAN
I/O Drive Current
Description
in
Enable automatic PCB assembly test. When this input is
pulled high, the automatic PCB assembly test mode is
entered. An internal pull-down resistor drives this input
low for normal operation.
155 SCAN_IN1 in
Scan input 1 used for automatic PCB assembly testing.
157 SCAN_IN2 in
Scan input 2 used for automatic PCB assembly testing.
159 SCAN_OU out
Scan output 1 used for automatic PCB assembly testing.
T1
160 SCAN_OU out
Scan output 2 used for automatic PCB assembly testing.
T2
153 Reserved
154 Reserved
VDD / VSS for Core Circuitry, Host Interface, and Panel/Memory Interface
Pins
Description
PVDD4 ~ PVDD1 for panel / memory interface.
Connect to +3.3V.
Must be the same voltage as the CVDD’s.
149, 108, 58, 21, 11
SRVDD2-1, CVDD4, CVDD2-1 for core circuitry.
Connect to +3.3V.
Must be the same voltage as the PVDD’s.
158, 151, 140, 126, 114, 72, 61, 49, 41, 30, Digital grounds for core circuitry and panel / memory
18, 8, 1
interface.
65, 40, 33, 12
25
LCD MONITOR 15EX2 MAINTENANCE
5. Assembly & Disassembly
5.1 System View
5.1.1 Front View
Menu Button
Select Button
- / + Buttons
Power Indicator
Power Button
26
LCD MONITOR 15EX2 MAINTENANCE
5. Assembly & Disassembly
5.1.2 Rear View
VESA Mounting Holes
Power Connector
Signal Cable
Latch
27
LCD MONITOR 15EX2 MAINTENANCE
5. Assembly & Disassembly
5.2 System Disassembly
The section discusses at length each major component for disassembly/reassembly and show
corresponding illustrations.
CAUTION: Before you start to install/replace these modules, 1) Turn off the power button
on the rear panel of the monitor; 2) Disconnect the power cord from the electrical outlet and
then from the monitor.
NOTE: During disassembly, 1) Label each cable as you disconnect it, noting its position and
routing; 2) Keep all the screws.
28
LCD MONITOR 15EX2 MAINTENANCE
5. Assembly & Disassembly
5.2.1 LCD Panel
Disassembly
1. Remove the screw cover on the rear side of the monitor. (Figure 5-1)
2. Remove three screws. (Figure 5-2)
Figure 5-1
Figure 5-2
29
LCD MONITOR 15EX2 MAINTENANCE
5. Assembly & Disassembly
3. To detach the LCD frame, first lift the lower edge and then separate it from the housing. (Figure 5-3)
4. Disconnect the cable connected to the LCD frame. (Figure 5-4)
Figure 5-3
Figure 5-4
30
LCD MONITOR 15EX2 MAINTENANCE
5. Assembly & Disassembly
5. Remove four screws, then lift up the LCD panel slightly. (Figure 5-5)
6. Disconnect three cables connected to the LCD panel. (Figure 5-6)
Figure 5-5
Figure 5-6
Reassembly
1. Reconnect the cables to the LCD panel, then fit the LCD panel into place and secure with four screws.
2. Reconnect the cable to the LCD frame, then fit the LCD frame back to the housing.
3. Secure three screws on the rear side of the monitor and replace the screw cover.
31
LCD MONITOR 15EX2 MAINTENANCE
5. Assembly & Disassembly
5.2.2 Power Connector Board
Disassembly
1. Detach the LCD panel. (See section 5.2.1)
2. Remove one screw locking the connector board, then you can lift up the connector board. (Figure 5-7)
Figure 5-7
Reassembly
1. Fit the connector board into place and secure with one screw.
2. Reassemble the LCD panel.
32
LCD MONITOR 15EX2 MAINTENANCE
5. Assembly & Disassembly
5.2.3 Signal Cable
Disassembly
1. Detach the LCD panel. (See section 5.2.1)
2. Remove one screw locking the cover () and lift it up (), then you can pull out
the signal cable (). (Figure 5-8)
Figure 5-8
Reassembly
1. Replace the signal cable, fit the cover into place and secure with one screw.
2. Reassemble the LCD panel.
33
LCD MONITOR 15EX2 MAINTENANCE
5. Assembly & Disassembly
5.2.4 Base Unit
Disassembly
1. Remove the screw cover on the rear side of the monitor.
2. Remove four screws locking the base unit, and then lift the LCD panel up (see figure 5-9).
Figure 5-9
Reassembly
1. Replace the base unit and secure with four screws.
2. Replace the screw cover.
34
LCD MONITOR 15EX2 MAINTENANCE
6. 15EX2 Block Diagram
6.1 System Block diagram
LCD MONITOR
LCD PANEL
AC source : LCD monitor power in.
12V DC Input : AC power Transfer to DC
and provide system power.
Analog Signals
VGA Input
15EX2
INTERFACE
BOARD
PC
INVERTER BD.
15EX2 INTERFACE BOARD
: (Interface Board).Receive
PC VGA signals transfer to
LCD signals , control inverter
BD backlight up/down.
KEY SWITCH BOARD : Indicate system
AC SOURCE
state and Adj panel brightness.
12V
DC Input
KEY SWITCH
BOARD
LCD Panel : Display panel.
35
LCD MONITOR 15EX2 MAINTENANCE
6. 15EX2 Block Diagram
6.2 15EX2 Interface Board Block diagram
JP2
Key-Switch
Board
Connector
KEY_MENU#
KEY_SELECT#
KEY_UP#
KEY_DOWN#
HOT_KEY
SOFT_PWR#
LED_AMBER
LED_GREEN
U11
M6759
Micro-CTRL
SCL
SDA
U10
24LC16B
12VIN
JP5
BRI_PWM
To Inverter
Connector
EN_BL#
J1
ESD
Protective
Circuit HSYNC
VS_VGA
HS_VGA
JP1
To DC
Jack-Board
Connector
RED+
GREEN+
BLUE+
VGA_R
VGA_G
VGA_B
External
VGA
Analog
RGB
VSYNC
U1
gmZAN1
Flat Panel
H_IN
U3
M52347 V_IN
U2
74F14
Monitor
Controller IC
E_R[2:7]
E_G[2:7]
E_B[2:7]
O_R[2:7]
O_G[2:7]
O_B[2:7]
LCD_CLK
DE
V_SYNC
H_SYNC
ER[0:5]
EG[0:5]
EB[0:5]
J3
To Panel
Connector
( 40 Pins )
OR[0:5]
OG[0:5]
OB[0:5]
J4
To Panel
Connector
( 20 Pins )
12VIN
+5V
U6
HIP6013
+3.3V
U7
EZ1084CT
36
LCD MONITOR 15EX2 MAINTENANCE
7. Troubleshooting
7.1 No Power
7.2 No Display( System Fail ) Or Display Abnormal
7.3 OSD Function Or Display Abnormal
7.4 No Back Light
7.5 PC Can’t Detect LCD Monitor Type
7.6 LCD Monitor Audio Function Abnormal
37
LCD MONITOR 15EX2 MAINTENANCE
7.1 No Power
Symptom:
When the power switch is turned on, nothing happens,power indicator
indicator is not light up.
up.
LCD MONITOR
AC SOURCE
LCD PANEL
P5V
Backlight Voltage
12V
POWER BD.
15EX2
Interface
Board
+12V
INVERTER BD.
SWITCH BOARD
38
LCD MONITOR 15EX2 MAINTENANCE
7.1 No Power
Symptom:
When the power switch is turned on, nothing happens, power indicator
indicator is not light up.
up.
POWER BOARD 12V TO 5V
+5VP
U13
1
B
12VIN
GND
K 2
2 B
100uF/25V
1
R120
47K
A
1
CLK D Q Q
H H L
↑
L L H
↑
2
0603
GND
1
R75
1K
0603
RLZ15A
R119
NC
0603
GND
GND
R76
10K
0603
GND
GND
OVER VOTAGE PROTECTION
POWER SWITCH
VDD_12
2
12V-->5V
GND
21
D14
RLZ5.1
2
C157
10u/16V C158
100n
CPWX8.3
10K 0603
A
1
6
C82
2
SWPSW
4
VCC
Q
100P
7
+5VP
+
E
Q5
CMMBT3906L
D12
CLK
C156
Key Switch BD
R74
1
2
3
Q
R73
100K
0603
R117
510R/0805
K
SOFT_PWR#
D
GND
5
CL
6
9
2
GND
Power BTN
R118
10K
14
U14A
74AHCT74
R72
100K
0603
1
U14
74AHCT74
VDD_12
C155
10uF/16V
PR
R116
10K
JP2
VDD_12
Q4 MMBT3906L
E
C
1
R114
0
2
+5VP
R113
NC
0603
2
KIA7045
POWER_ON#
B
R115
10K
2
GND
AUDIO_PWR
R112
470
0603
C
1
E
RSTN
1
VCC
10K
0805
5%
1
1,2 SHORT FOR 12V ADAPTOR
Q14
R110
FOR 12V/5V I/P
47K
0603
2sc1623
FOR 12V/5V I/P
1
1
1
2
5V-->3.3V
GND
+3.3V
U7
CPWX4.3
GND
C80
1uF
0805
16V
1
C78
C79
+ 10uF/16V + 470uF/16V
CPWX4.3
2
R70
165
0603
1%
1
R67
100
0603
1%
2
4
C77
10uF/16V
2
2
VOUT1
21
+
VOUT0
GND
EZ1084CT
1
R66
499
1%
VIN
1
1
+ C75
470uF/16V
2
2
3
1
+5V
1
1
R65
499
1%
C81
1uF
0805
16V
GND
+5V
2
2
1%
1
1
K
1
D10
1%
2
1 R71
22
0603
R62
2.94K
C68
1uF
0805
16V
GND
L1 4.7UH/8A
1
2
CHOKE_ETQP_CDRH125
SR34
R69
1K
0805
A
S
G
1N4148
MLL34B
C73
0.1uF
2
GND
GND
HUF75307D
D9
HIP6013
C76
0.01uF
GND
D
Q3
14
13
12
11
10
9
8
2
D11
RLZ15A
TO DC JACK BD
1
1
GND
VCC
NC1
NC2
NC3
BOOT
UGATE
PHASE
2
GND
C74
33P
RT
OCSET
SS
COMP
FB
EN
GND
1
4.99K
0805
1%
GND
+5V
R63
40.2K
0805
1
2
3
4
5
6
7
2
GND
2
2
1 R64
21
JP1
1
2
C72
0.1uF
2
1
K
0.1uF
1000P
0805
C71
1uF
0805
2
3
1
1
4
2
C70
+ C69
330uF/16V
2
2
U6
C67
1
2
GND
A
CHOKE1
COM_CHOKE_4A
1
2
3
4
5
6
2,3 SHORT OR OPEN
10K
0603
GND
PH_6
12V
12V
GND
GND
5V
5V
1,2 SHORT FOR 12V ADAPTOR
E
R111
12VIN
POWER CONN.
500z/100M
3216
C
B
2
2,3 SHORT OR OPEN
2
B22
1
POWER_ON# 1
2
R109
39
LCD MONITOR 15EX2 MAINTENANCE
7.1 No Power
Symptom:
When the power switch is turned on, nothing happens, power indicator
indicator is not light up.
up.
No power
Is the
LCD monitor connected
to power (AC adaptor)?
No
Connect
AC adaptor.
Yes
Try another known good AC adapter.
Replace
15EX-TA Interface Board
No
Power
OK?
Try another know good
Internal POWER BD.
Yes
Replace the
faulty AC
Adaptor.
No
Power
OK?
BoardBoard-level
Troubleshooting
Yes
Replace faulty
internal
POWER BD.
To be continued
Next Page.
40
LCD MONITOR 15EX2 MAINTENANCE
7.1 No Power
Symptom:
When the power switch is turned on, nothing happens, power indicator
indicator is not light up.
up.
15EX-TA Interface Board
BoardBoard-level Troubleshooting
Check following parts and signals:
Check following parts and signals:
12VIN
OK?
No
PARTS:
JP1
CHOKE1
POWER BD
Yes
No
+5V
OK?
U6
R64
Q3
R63
C74
D9
R65
R62
SW BD
SIGNAL:
Yes
12VIN
PARTS:
Check following parts and signals:
SIGNAL:
C67
D11
R71
R69
C76
D10
R66
12VIN
+5VP
VDD_12
+5V
No
PARTS:
VDD_12
OK?
Q4
Q5
D12
B22
R72 ~ R76
SIGNAL:
12VIN
VDD_12
Yes
No
VDD_12 TO +5VP
OK?
No
+3.3V
OK?
Check following parts and signals:
PARTS:
D14
U14
R112
R116
C157
R117
R120
R115
R119
C158
SIGNAL:
VDD_12
+5VP
No
VCC_LCD
OK?
Check following parts and signals:
PARTS:
SIGNAL:
U7
R67
C75
+5V
+3.3V
R70
C77~C80
Check following parts and signals:
PARTS:
SIGNAL:
U8
R77
VCC_LCD
Q6
R78
End
41
LCD MONITOR 15EX2 MAINTENANCE
7.2 No Display( System Fail ) Or Display Abnormal
+3.3V
+3.3V
220Z/100M
DVDDA
B5
220Z/100M
VCC_3.3V
C5
C6
C7
C8
22uF/16V
0.1uF
0.1uF
22uF/16V 0.1uF
10V
C9
0.1uF
C10
C11
C12
C13
C14
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
C21
C23
C24
C25
C26
C27
C28
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
C15
BAV99LT1
75
2
GND
0.01uF
C20
22uF/16V 0.1uF
C22
22uF/16V 0.1uF
10V
B12 220Z/100M
GND
C17
C31
ANALOG SUPPLY
DECOUPLING
10P
VDDA
GND
C32
22uF/16V 0.1uF
C33
C34
C35
0.1uF
0.1uF
0.1uF
GND
DIGITAL
SUPPLY
DECOUPLING
+3.3V
1
ADC_GNDA
D4
R4
100
BAV99LT1
75
2
BLUE+
C44
C47
0.01uF
R10
R11
R12
100
100
100
C41
10P
150
148
141
142
+3.3V B83
X1
220Z/100M
8
C165
1
0.1uF
VDD
E/D
OUT
GND
5
R20
4
GND
10
C49
15P
OSC50MHz
GND
U11
115
116
117
118
119
120
121
122
+5V
C94
R83
10K
SCL
SDA
20MHz
22P
C97
22P
R84
10K
0.1uF
U10
8
7
6
5
VCC
WP
SCK
SI
A0
A1
A2
VSS
1
2
3
4
113
112
111
110
109
107
106
105
104
102
124
123
0.1uF
12
33
40
65
108
149
11
21
58
125
139
79
77
REDGREENBLUERESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
N/C
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
U1
HSYNC/CS
VSYNC
TCLK
XTAL/RESERVED
STI_TM1
STI_TM2
SCAN_IN1
SCAN_IN2
SCAN_OUT1
SCAN_OUT2
PSCAN
Flat Panel Monitor
Controller IC
OSD_HREF
OSD_VREF
OSD_CLK
OSD_DATA0
OSD_DATA1
OSD_DATA2
OSD_DATA3
OSD_FSW
HFS
HCLK
HDATA
RESETn
IRQ
MFB0
MFB1
MFB2
MFB3
MFB4
MFB5
MFB6
MFB7
MFB8
MFB9
MFB10
MFB11
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PD16
PD17
PD18
PD19
PD20
PD21
PD22
PD23
PD24
PD25
PD26
PD27
PD28
PD29
PD30
PD31
PD32
PD33
PD34
PD35
PD36
PD37
PD38
PD39
PD40
PD41
PD42
PD43
PD44
PD45
PD46
PD47
PCLKA
PCLKB
PDISPE
PVS
PHS
PPWR
PBIAS
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PD16
PD17
PD18
PD19
PD20
PD21
PD22
PD23
PD24
PD25
PD26
PD27
PD28
PD29
PD30
PD31
PD32
PD33
PD34
PD35
44
45
43
R35
RP1
5
6
7
8
5
6
7
8
RP3 5
6
7
8
RP4 5
6
7
8
RP5 5
6
7
8
RP6 5
6
7
8
RP7 5
6
7
8
RP8 5
6
7
8
RP10 5
6
7
8
RP2
0
73
74
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
33
33
33
33
33
33
33
33
33
E_R2
E_R3
E_R4
E_R5
E_R6
E_R7
E_G2
E_G3
E_G4
E_G5
E_G6
E_G7
E_B2
E_B3
E_B4
E_B5
E_B6
E_B7
O_R2
O_R3
O_R4
O_R5
O_R6
O_R7
O_G2
O_G3
O_G4
O_G5
O_G6
O_G7
O_B2
O_B3
O_B4
O_B5
O_B6
O_B7
B14 1
2 120z/100M
B16 1
2 120z/100M
B17 1
B18 1
2 120z/100M
2 120z/100M
J3
E_R2
E_R3
E_R4
E_R5
E_R6
E_R7
E_G2
E_G3
E_G4
E_G5
E_G6
E_G7
E_B2
E_B3
E_B4
E_B5
E_B6
E_B7
O_R2
O_R3
O_R4
O_R5
O_R6
O_R7
O_G2
O_G3
O_G4
O_G5
O_G6
O_G7
O_B2
O_B3
O_B4
O_B5
O_B6
O_B7
GND
OR1
OR3
OR5
OG0
OG2
OG4
GND
OB1
OB3
OB5
ER0
ER2
ER4
GND
EG1
EG3
EG5
EB0
EB2
C120
33P
DE
B19
B20
0
0
B21
0
R97
EB4
GND
GND
19
17
15
13
11
9
7
5
3
1
0
C122
10P
CLK
VCC_LCD
GND
GND
B68
2
+
GND
ADC_GNDA
GND
PARAMETER
EEPROM
1
500z/100M
C123
10uF/16V
CPWX4.3 R51
120
1/2W-AX
20
18
16
14
12
10
8
6
4
2
ADC_GNDA
GND
GND
2
120z/100M
V_SYNC
C118
100P
EB5
GND
GND
GND
B46
1
GND
CLK
GND
2
120z/100M
DE
C119
33P
GND
C125
0.1uF
C126
0.1uF
GND
GND
GND
B38
1
J4
V_SYNC
H_SYNC
LCD_CLK
OR0
OR2
OR4
GND
OG1
OG3
OG5
OB0
OB2
OB4
GND
ER1
ER3
ER5
EG0
EG2
EG4
GND
EB1
EB3
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
GND
To Panel
Connector
( 20 Pins )
J4
B53 120z/100M
2
1
H_SYNC
LCD_CLK
GND
76
75
39
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
GND
GND
24LC16B
GND
71
70
69
68
67
66
64
63
62
57
56
55
54
53
52
51
50
48
47
46
42
39
38
37
36
35
34
32
31
29
28
27
26
25
24
23
22
20
19
17
16
15
14
13
10
9
7
6
GND
gmZAN1
To Panel
J3 Connector
( 40 Pins )
RVDD1
RVDD2
CVDD1
RVDD3
CVDD4
SYN_VDD
SRVDD1
SRVDD2
CVDD2
DVDD
SVDD
ADC_VDD1
ADC_VDD2
143
137
136
129
128
PLL_RVDDA
DAC_SVDDA
PLL_SVDDA
PLL_DVDDA
DAC_DVDDA
RED+
GREEN+
BLUE+
93
89
85
M6759
Y2
C96
98
103
99
100
101
21
R53
153
154
155
157
159
160
3
GND
HFS
HCLK
HDATA[0:3]
20
2
4
5
59
60
83
97
130
135
145
147
152
156
ADC_GNDA
1
C39
0.1uF
2
B13
3
7
C46
0.01uF 0.01uF 0.01uF
C38
0.1uF
114
126 CVSS4
140 DVSS
151 SVSS
158 SYN_VSS
SRVSS2
RED94
GREEN- 90
86
BLUEC45
VGA_B
96
92
88
84
95
91
87
1
CVSS1
RVSS1
SRVSS1
RVSS2
CVSS2
RVSS3
RVSS4
CVSS3
2
BLUE+
10P
1
8
18
30
41
49
61
72
75
0.01uF
C30
133
132 SUB_SGNDA
146 SUB_DGNDA
SUB_RGNDA
BAV99LT1
GREEN+
127
131 DAC_DGNDA
134 PLL_DGNDA
138 PLL_SGNDA
144 DAC_SGNDA
PLL_RGNDA
100
U1
ADC_RVDDA
ADC_GVDDA
ADC_BVDDA
ADC_VDDA
D3
R3
RED+
GREEN+
C43
ADC_RGNDA
ADC_GGNDA
ADC_BGNDA
B11
3
ADC_GNDA
SUB_GNDA
ADC_GND1
ADC_GND2
VGA
Analog
RGB
VGA_G
82
81
80
78
9
C37
0.1uF
GND
INPUT AC
COUPLING
J1
C36
1
R2
100
C19
C18
1000P
2
D2
RED+
C42
1
B9
3
1
10K
RVDDA
2
VGA_R
GND
B10 220Z/100M
1
11
R1
2
SVDDA
GND
2
0.1uF
ER0
ER1
ER2
ER3
ER4
ER5
EG0
EG1
EG2
EG3
EG4
EG5
EB0
EB1
EB2
EB3
EB4
EB5
OR0
OR1
OR2
OR3
OR4
OR5
OG0
OG1
OG2
OG3
OG4
OG5
OB0
OB1
OB2
OB3
OB4
OB5
1
C3
0.1uF
2
C2
22uF/16V
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
1
C1
220Z/100M
2
B8
1
+5V
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
The LCD no display,but power and back light is good.or show abnormal
abnormal picture.
B2
B39 1
B40 1
B41 1
B42 1
B43 1
B44 1
B45 1
B47 1
B48 1
B49 1
B50 1
B51 1
B52 1
B54 1
B55 1
B56 1
B57 1
B58 1
B59 1
B60 1
B61 1
B62 1
B63 1
B64 1
B65 1
B66 1
B67 1
B69 1
B70 1
B71 1
B72 1
B73 1
B74 1
B75 1
B76 1
B77 1
E_R2
E_R3
E_R4
E_R5
E_R6
E_R7
E_G2
E_G3
E_G4
E_G5
E_G6
E_G7
E_B2
E_B3
E_B4
E_B5
E_B6
E_B7
O_R2
O_R3
O_R4
O_R5
O_R6
O_R7
O_G2
O_G3
O_G4
O_G5
O_G6
O_G7
O_B2
O_B3
O_B4
O_B5
O_B6
O_B7
1
Symptom:
GND
GND
42
LCD MONITOR 15EX2 MAINTENANCE
7.2 No Display( System Fail ) Or Display Abnormal
Symptom:
The LCD no display,but power and back light is good.or show abnormal
abnormal picture.
Picture abnormal
1. Make sure the PC VGA adapter is good.
2. Check the VGA cable is connected to PC properly.
3. Make sure the power adaptor & power BD is good.
4. Make sure all cable and PCB connect properly.
YES
Is Picture
OK?
END
NO
Replace following parts one at a time and test after each
replacement until find out which part caused the problem
1. PC to monitor cable
2. LCD module
3. 15EX-TA Interface Board to inverter BD cable
YES
Is Picture
OK?
To find out which part is
causing the problem.
NO
Replace 15EX-TA Interface Board or go
into board level Trouble-shooting.
Board-level
Troubleshooting
Check the following parts for cold solder or one of the
following parts on the mother-board may be defective,
use an oscilloscope to check the following signal or
replace the parts one at a time and test after each
replacement.
Parts:
J1
X1
U11
J3
R1~R4
B9
B13
B39~B77
R83~R84
Signals:
U1
Y2
U10
J4
D2~D4
B11
RP1~RP10
R97
VGA_R
VGA_B
HCLK
SCL
E_R[2:7]
E_B[2:7]
O_G[2:7]
H_SYNC
LCD_CLK
VGA_G
HFS
HDATA[0:3]
SDA
E_G[2:7]
O_R[2:7]
O_B[2:7]
V_SYNC
DE
INVERTER BD
43
LCD MONITOR 15EX2 MAINTENANCE
7.3 OSD Function Or Display Abnormal
Symptom:
When you pressed the LCD OSD ( On Screen Display ) button,but no OSD display or the function can not be adjusted.
J1
External
VGA
Analog
RGB
J3
VGA_R
VGA_G
VGA_B
To Panel
Connector
( 40 Pins )
U1
+5V
gmZAN1
HFS
4
3
2
J4
1
HCLK
RP12
4.7K
4
5
KEY_UP#
B26
7
8
U11
+5V
EN_BL#
M6759
C94
KEY_DOWN#
HOT_KEY
10K
B27
R84
10K
SCL
SDA
8
7
6
5
VCC
WP
SCK
SI
12VIN
TO INVERTER
0.1uF
U10
A0
A1
A2
VSS
1
2
3
4
GND
BRI_PWM
C89 C90
C91 C92
33P
33P
C145
100uF/25V
CPWX8.3
GND
PARAMETER
EEPROM
R100
BRI_PWM
R101
4.7K
Q11
MMBT3904L
C148
0.1uF
33P
C149
1
100uF/25V
CPWX8.3 B79
+5V
GND
21
PH_5P
0.1uF
1
2
3
4
5
5.6K
20
Key-Switch
Board
Connector
C146
GND
2
33P
B78 500z/100M
2
R99
3K
24LC16B
B28
1
+5V
1
R83
2
3
KEY_SELECT#
B25
6
1
2
B24
2
1
5
KEY_MENU#
1
JP2
To Panel
Connector
( 20 Pins )
HDATA[0:3]
GND
R53
R103
1K
2
12V
GND
BRT_RANGE
GND
ON/OFF
JP5
300z/100M
JP5
To Inverter
Connector
Y2
20MHz
C97
22P
C96
R104
Q12
EN_BL#
4.7K
MMBT3904L
22P
GND
44
LCD MONITOR 15EX2 MAINTENANCE
7.3 OSD Function Or Display Abnormal
Symptom:
When you pressed the LCD OSD ( On Screen Display ) button,but no OSD display or the function can not be adjusted.
OSD is abnormal
Board-level
Troubleshooting
1.Make sure that Key SW BD and 15EX-TA Interface Board
is connected properly.
2. Check the Key SW BD and Interface Board’s cable is good.
YES
To find out which part is
causing the problem.
OSD function
OK?
NO
Try another known good Key SW BD .
YES
OSD function
OK?
NO
Replace 15EX-TA Interface BD or
go into board level Trouble-shooting.
Replace Key SW BD and
To find out which part is
causing the problem.
Check the following parts for cold solder or one of the following
parts on the mother-board may be defective, use an oscilloscope
to check the following signal or replace the parts one at a time
and test after each replacement.
Parts:
Signals:
J1,JP2
RP12
U1
U11
Y2
B24~B28
C89~C92
KEY_MENU#
KEY_SELECT#
KEY_UP#
KEY_DOWN#
HOT_KEY
HFS
HCLK
HDATA[0:3]
SCL
SDA
BRI_PWM
Key SW BD
45
LCD MONITOR 15EX2 MAINTENANCE
7.4 No Back Light
Symptom:
The LCD Display is good but too dim,or the backlight can’
can’t be adjusted.
J3
J1
External
VGA
Analog
RGB
To Panel
Connector
( 40 Pins )
VGA_R
VGA_G
VGA_B
U1
+5V
HFS
J4
gmZAN1
HCLK
4
3
2
1
5
6
7
8
To Panel
Connector
( 20 Pins )
HDATA[0:3]
RP12
4.7K
4
5
KEY_DOWN#
U11
1
KEY_UP#
B26
M6759
BRI_PWM
R101
4.7K
B28
Q11
MMBT3904L
C148
C149
1
100uF/25V
CPWX8.3 B79
+5V
C91 C92
33P
33P
33P
GND
0.1uF
300z/100M
Inverter BD
12V
GND
BRT_RANGE
GND
ON/OFF
1
2
3
4
5
2
JP5
JP5
To Inverter
Connector
GND
33P
Key-Switch
Board
Connector
PH_5P
5.6K
0.1uF
C89 C90
C146
GND
R100
B27
C145
100uF/25V
CPWX8.3
R99
3K
BRI_PWM
HOT_KEY
B78 500z/100M
2
2
B25
TO INVERTER
1
+5V
1
3
KEY_SELECT#
12VIN
2
2
EN_BL#
2
1
KEY_MENU#
B24
1
JP2
R103
1K
+5V
20
R104
R53
C94
R83
Y2
10K
20MHz
C96
22P
SCL
SDA
R84
10K
VCC
WP
SCK
SI
4.7K
MMBT3904L
0.1uF
U10
8
7
6
5
C97
22P
Q12
EN_BL#
21
A0
A1
A2
VSS
1
2
3
4
GND
24LC16B
GND
GND
PARAMETER
EEPROM
46
LCD MONITOR 15EX2 MAINTENANCE
7.4 No Backlight
Symptom:
The LCD Display is good but too dim,or the backlight can’
can’t be adjusted.
LCD No Backlight
1. Make sure that AC power cord and adapter is connected to
outlet properly.
2. Check the power switch is on.
3. Check the VGA cable is connected to PC properly.
4. Make sure the power BD is good.
5. Make sure all cable and PCB connect properly.
YES
Backlight
OK?
END
NO
Replace following parts one at a time and test after each
replacement until find out which part caused the problem
1. LCD module
2. Inverter BD
3. 15EX-TA Interface Board to inverter BD cable
YES
Backlight
OK?
To find out which part is
causing the problem.
Board-level
Troubleshooting
Check the following parts for cold solder or one of the
following parts on the mother-board may be defective,
use an oscilloscope to check the following signal or
replace the parts one at a time and test after each
replacement.
Parts:
Signals:
JP5
B78,B79
U1,U11
C145,C146
C148,C149
Q11,Q12
R99~R101
R103,R104
12VIN
+5V
BRI_PWM
EN_BL#
SCL
SDA
INVERTER BD
NO
Replace 15EX-TA Interface Board or
go into board level Trouble-shooting.
47
LCD MONITOR 15EX2 MAINTENANCE
7.5 PC Can’t Detect LCD Monitor Type.
Symptom:
The PC PNP Operation System Can’
Can’t Detect The LCD Monitor Type.
VCC_FROM_PC
+5V
4
VS_VGA
B6
120Z/100M
VCC_FROM_PC
R1
R5
10K
VSYNC
D5
100
R54
47K
BAV99LT1
R55
47K
U5 24C21
J1
1
DDC_SCL
VSYNC
DDC_SCL
DDC_SDA
B3
120Z/100M
VGA
Analog
RGB
R56
R57
R58
100
100
100
7
6
5
C65
47P
DDC_SDA
2
B4
VCLK
SCL
SDA
C66
47P
VCC
TEST
NC
WP
VSS
8
1
2
3
4
C64
0.1uF
GND
GND
120Z/100M
DDC+5V
DDC+5V
B1
1
2
3
+5V
C163
D1
BAV70LT1
0.1U
3
VCC_FROM_PC
48
LCD MONITOR 15EX2 MAINTENANCE
7.5 PC Can’t Detect LCD Monitor Type.
Symptom:
The PC PNP Operation System Can’
Can’t Detect The LCD Monitor Type.
LCD Detected Abnormal
Board-level
Troubleshooting
1. Make sure the PC VGA adapter is good.
2. Check the VGA cable is connected to PC properly.
4. Make sure all cable and PCB connect properly.
YES
Is it
OK?
END
NO
Replace PC to monitor cable.
YES
Is it
OK?
Replace faulty cable.
Check the following parts for cold solder or one of the
following parts on the mother-board may be defective,
use an oscilloscope to check the following signal or
replace the parts one at a time and test after each
replacement.
Parts:
Signals:
J1
U5
R54~R58
C64~C66
B3,B4,B6
R5,D5
B1,D1
VSYNC
DDC_SCL
DDC_SDA
DDC+5V
+5V
VCC_FROM_PC
NO
Replace 15EX-TA Interface Board or
go into board level Trouble-shooting.
49
LCD MONITOR 15EX2 MAINTENANCE
8. Spare Parts List ( 1 )
Part Number
Description
Location(s)
Part Number
Description
Location(s)
644204590003 AC ADPT ASSY;36W,12V/3A,API-208-98010
622115152001 CARTON;EPSON,15EX2
634415120008 ARM FRONT;15AX
641300020059 CFM-EPSON;LCD,LQ150X1DG51,15",TFT
634415120009 ARM REAR;15AX
627300500001 CHOKE COIL;5UH,4A,4.5TS,10*8*5MM
634415120122 BASE FRONT;15AX3
361200001015 CLEANNER;APEARANCE,PRC
634215140004 BASE METAL;15A1,SHARP
633100850009 CON;DC POWER JACK,MA,D2.0
J2
634015130003 BASE REAR ASSY;MPT,15EX2
629100012001 CON;HDR,MA,10P*2,1.25MM,ST,SMT,HRS
J4
634415120023 BASE REAR;15AX
629100014001 CON;HDR,MA,20P*2,1.25MM,ST,SMT,HRS
J3
642015150001 BASE/ARM ASSY;T50EX-TA/4SN-ED1-A-GSJ
331030003007 CON;HDR,MA,3P*1,.1,ST,PL5.842,GOLD,(9
J2
622115015001 BINDER;L-TYPE,4 LAYER,W55*H55*L1950
633100110034 CON;HDR,MA,5P*1,2MM,ST
JP5
221600050077 BINDER;L-TYPE,W55*W55*L1130MM
633100110035 CON;HDR,MA,6P*1,2MM,ST
J1
622115065006 BINDER;L-TYPE,W55*W55*L750MM,LM15CX
633100110038 CON;HDR,MA,9P*1,2MM,ST
JP2
642215130051 CABLE ASSY;SIGNAL,D15/PHR12,SR,15EX
633100121201 CON;HDR,SHROUD,MA,12P*1,2MM,R/A
J1
627207510341 CAP;.01U ,50V ,10%,0603,X7R,SMT
C42,C43,C44,C45,C46,C4
633100120601 CON;HDR,SHROUD,MA,6P*1,2MM,R/A
JP1
627207310471 CAP;.1U ,25V ,+80-20%,0603,Y5V
C10,C11,C12,C125,C126,
633100120901 CON;HDR,SHROUD,MA,9P*1,2MM,R/A
JP1
627207510231 CAP;1000P,50V ,5% ,0603,NPO,SMT
C18
634415150003 CONTROL COVER;EPSON,15EX2
272005102401 CAP;1000P,CR,50V,10%,0805,X7R
C67
288100701002 DIODE;BAV70LT1,70V,225MW,SOT-23
D1
272075101701 CAP;100P ,50V ,+ -10%,0603,NPO,SMT
C118
288100099001 DIODE;BAV99,70V,450MA,SOT-23
D2,D3,D4,D5,D6
627207510031 CAP;10P ,50V ,5% ,0603,NPO,SMT
C122,C17,C30,C41
628810414801 DIODE;LL4148,MELF,SMT
D9
272075150301 CAP;15P ,CR,50V ,5% ,0603,NPO,SMT
C49
288100015001 DIODE;RLZ15A,ZENER,13.89V,5%,SMT
D11,D12
272003105701 CAP;1U ,CR,25V ,+80%-20%,0805,Y5V
C68,C71,C80,C81
288100051001 DIODE;RLZ5.1B,ZENER,5.1V,5% ,SMT
D14
627207522031 CAP;22P ,50V ,5% ,0603,NPO
C96,C97
628810003401 DIODE;SR34,VRRM40V,3A,DO-214AA,SMT
D10
627207533031 CAP;33P ,50V ,5% ,0603,NPO,SMT
C119,C120,C57,C74,C86,
627260310751 EC;100U ,25V,20%,D8*6.5,85'C,SMT
C145,C149,C82
631202839477 CAP;470U ,M,16V,ALU,105'C,D10*12.5,KY
C69,C75,C796312028434
627260210651 EC;10U ,16V ,20%,D4*5.3,85'C,SMT
C123,C155,C4,C52,C77,C
627207547031 CAP;47P ,50V ,5% ,0603,NPO,SMT
C100,C101,C102,C103,C1
272602226501 EC;22U ,16V ,M,5*5.5,-40+85',SMT
C1,C19,C21,C31,C5,C8,C
50
LCD MONITOR 15EX2 MAINTENANCE
8. Spare Parts List ( 2 )
Part Number
Description
Location(s)
Part Number
Description
Location(s)
622215120003 END CAP;CABLE,15AX
286306013001 IC;HIP6013,BUCK PWM CTLR,SOIC,14P
U6
622215120001 END CAP;L,15AX
628630704201 IC;KIA7042F,4.2V,DETECTOR,SOT-89
U13,U9
622215120002 END CAP;R,15AX
628410001001 IC;MX10FMAXDQC,8BIT MICRO CTLR,PLCC44
U11
648115150001 F/W ASSY;2421,DDC,SO8,15EX2,SHP,EPSON
628130071401 IC;NC7S14,HS INVERTER,SOT23,5P
U16
648115150002 F/W ASSY;MX10FMAXD,15EX2,SHP,EPSON
628630110001 IC;TPS1100,P-MOSFET,PWM CTRL,SO-8P
U8
L1
627300130010 FERRITE CHIP;120OHM/100MHZ,1608,10%,S
B14,B16,B17,B18,B3,B38
627300990003 INDUCTOR;47uH,20%,CDRH127,SUMIDA
273000150001 FERRITE CHIP;220OHM/100MHZ,2012,200mA
B10,B12,B2,B33,B5,B8,B
634415150004 KEY FRAME;EPSON,15EX2
273000130017 FERRITE CHIP;300OHM/100MHZ,1608,SMT
B24,B25,B26,B27,B28,B2
624200010140 LABEL;5*20,BLANK,COMMON
627300110001 FERRITE CHIP;500OHM/100MHZ,3216,SMT
B1,B22,B68,B78
242600000372 LABEL;8.3*5MM
551103200013 FLOPPY DISKETTE;3.5",1.44MB,2HD
242690500078 LABEL;BAR CODE,32*16MM,MD4
624500010012 FLOW CARD;LCD,WHITE,PRC
242690500078 LABEL;BAR CODE,32*16MM,MD4
634515100003 GASKET;10*6.5*80MM,1535D,15VX
624215150002 LABEL;BAR CODE,EPSON,15EX2
634315130002 HEATSINK;B,ZN1,15EX
U1
U5
624200010020 LABEL;BAR CODE,M1420 COMMON
634415120011 HINGE COVER;15AX
242010400004 LABEL;BAREBONE,MENHIR
634215120019 HINGE PLATE METAL;15AX
242600000379 LABEL;BLANK,14*14MM
634215120009 HINGE;15AX
624215150004 LABEL;DISK,EPSON,50EX2
634215120018 I/O PORT METAL;15AX
624215150001 LABEL;RATING,EPSON,15EX2
291000610044 IC SOCKET;44P,PLCC,TIN,W/O PEGS,SMT
U11
624215150003 LABEL;S/N,EPSON,15EX2
628157401401 IC;74F14,HEX INVERTER,SO,14P
U2
634215150016 LCD BRACKET;L,SHARP,15EX2
628267407401 IC;74HCT74,D-FLIP/FLOP,SO,14P
U14
634215150015 LCD BRACKET;R,SHARP,15EX2
628341508002 IC;EEPROM,AT24C16,2048*8,SOIC,8P,1501
U10
634615120002 LED HOLDER;S/W BD,LED-5*3,50AX
D1
628341508001 IC;EEPROM,AT24C21,1024,SOIC,8P,1501A/
U5
633400010307 LED;ROUND,D5MM,H8.6MM,P2.54,GRN/YEL
D1
326301084004 IC;EZ1084CT,VOL REG,5A,TO220,SEMTEC
U7
634415150017 LENS;EPSON,15EX2
628450000101 IC;GMZAN1,XGA SCALER,PQFP,160P
U1
624315150001 MANUAL;JP,EPSON,15EX2
51
LCD MONITOR 15EX2 MAINTENANCE
8. Spare Parts List ( 3 )
Part Number
Description
Location(s)
Part Number
Description
634215140020 METAL-1;LEFT,15A1,SHARP
640015120002 PWA;PWA-15AX-TA/POWER JACK BD
634215140021 METAL-1;RIGHT,15A1,SHARP
640015150001 PWA;PWA-T50EX-TA/4SN-ED1 I/F ASSY
634215140024 METAL-3;LEFT,15A1,SHARP
640015150004 PWA;PWA-T50EX-TA/4SN-ED1,I/F,H/I
634215140025 METAL-3;RIGHT,15A1,SHARP
640015150005 PWA;PWA-T50EX-TA/4SN-ED1,I/F,SMT
633100910201 MINI JUMP;2P*1,2.54MM,H=6MM,OPEN
J2
640015130003 PWA;PWA-T50EX-TA/SW BD
631445000401 OSC;50MHZ,50PPM,TTL,162-50000-1011
X1
642200210018 PWR CORD;125V/7A,Y GND,T,6FT,JP,S
Location(s)
644015120201 PACKING KIT;CONTAINER,15AX
627107100001 RES;0
,1/16W,0603,SMT
R121,R21,R35,R37,R97
644015150002 PACKING KIT;T50EX-TA/4SN-ED1-A-GSS
271012000301 RES;0
,1/8W,5% ,1206,SMT
B19,B20,B21
622115125002 PALLET;A,WOODEN,1330*1030MM,15AX
627107110031 RES;10 ,1/16W,5% ,0603,SMT
R20Replace 62710713303
622115125003 PALLET;B,WOODEN,900*1030MM,15AX
627107110131 RES;100 ,1/16W,5% ,0603,SMT
B11,B13,B9,R10,R11,R12
643015150002 PANEL ASSY;T50EX-TA/4SN-ED1-A-GSS
627107110431 RES;100K ,1/16W,5% ,0603,SMT
R72,R73
634015150001 PANEL FRONT ASSY;EPSON,15EX2
627107110331 RES;10K ,1/16W,5% ,0603,SMT
R1,R109,R116,R44,R46,R
634415120001 PANEL FRONT;15AX
627103413131 RES;130 ,1/2W ,5% ,2010,SMT
R51
634015120004 PANEL REAR ASSY;15AX
627107115331 RES;15K ,1/16W,5% ,0603,SMT
R87,R91
634415120002 PANEL REAR;15AX
271071165011 RES;165 ,1/16W,1% ,0603,SMT
R70
622115125004 PARTITION;A,1330*1030MM,15AX
271002102301 RES;1K ,1/10W,5% ,0805,SMT
R69
622115125005 PARTITION;B,900*1030MM,15AX
627107110231 RES;1K ,1/16W,5% ,0603,SMT
R103,R112,R128,R75
622115125001 PARTITION;CABLE/ADAPTER,15AX
627107110531 RES;1M ,1/16W,5% ,0603,SMT
R53
641215150001 PCB ASSY;T50EX-TA/INV BD,SHP,EPSON
627107129411 RES;2.94K,1/16W,1% ,0603,SMT
R62
622200010020 PE BAG;350*240,ACCESSORY,LCD MTR
271071221302 RES;22 ,1/16W,5% ,0603,SMT
R127,R36,R71
622215152001 PE BAG;FOR PANEL F/R,50EX2
627107130251 RES;3K ,1/16W,.5%,0603,SMT
R99
622200010035 PE BAG;LL-T155AE,T=0.04MM,50RX
627107147231 RES;4.7K ,1/16W,5% ,0603,SMT
R101,R104,R118,R79,R9
622200030002 PE FILM;SKIN,PACKING,PRC
627100249911 RES;4.99K,1/8W ,1% ,0805,SMT
R64
634415120025 PUSH-BUTTON;15AX
627100240221 RES;40.2K,1/8W ,1% ,0805,SMT
R63
52
LCD MONITOR 15EX2 MAINTENANCE
8. Spare Parts List ( 4 )
Part Number
Description
Location(s)
Part Number
Description
Location(s)
271071471302 RES;470 ,1/16W,5% ,0603,SMT
R68,R80,R88,R93
225000020001 TAPE;1/2",LIMPID,20YARD/REEL,PRC
271071474301 RES;470K ,1/16W,5% ,0603,SMT
R82
622200000007 TAPE;AC04,FOR CG,COMMON
FOR HINGE PLATE META
627107147331 RES;47K ,1/16W,5% ,0603,SMT
R110,R120,R54,R55,R78,
628822112401 TRANS;2SB1124S/T,PNP,SMD
Q4
271071499011 RES;499 ,1/16W,1% ,0603,SMT
R65,R66
628827530701 TRANS;HUF75307,N-MOSFET,TO252,SMT
Q3
271071562301 RES;5.6K ,1/16W,5% ,0603,SMT
R100
288203904010 TRANS;MMBT3904L,NPN,Tr35NS,TO236AB
Q10,Q11,Q12,Q4,Q76288
271002511301 RES;510 ,1/10W,5% ,0805,SMT
R117
288203906018 TRANS;MMBT3906L,PNP,Tr35NS,TO236AB
Q5,Q6,Q8,Q9
271071750302 RES;75 ,1/16W,5% ,0603,SMT
R2,R3,R4
637310302005 T-SCREW;B,M3,L8,FLT(+),1,NIW
271611330301 RP;33*4 ,8P ,1/16W,5% ,0612,SMT
RP1,RP10,RP2,RP3,RP4,R
637310301001 T-SCREW;B,M3L8,TRS(+),0,ZNC
271611472301 RP;4.7K*4,8P ,1/16W,5% ,0612,SMT
RP11,RP12,RP13,RP14,R
373203010602 T-SCREW;P,M3L6,PAN(+),0,NIW
634515120001 RUBBER PAD;15AX
634215130003 VESA METAL;15EX
634515140001 RUBBER PAD;FRONT,L,SP,15A1,50AX
642215130005 WIRE ASSY;1007,#26,5P,50MM,INV,15EX
634515140002 RUBBER PAD;FRONT,R,SP,15A1,50AX
642215150002 WIRE ASSY;1007,#26,6P,90MM,PWR,15EX2
656511515001 S/W;1.44M,EPSON,50EX2
642215130004 WIRE ASSY;1007,#26,9P,400MM,SW,15EX
637110201003 SCREW;M2,L4.8,FLNG/PAN(+),NIW,NYLOK
642215150001 WIRE ASSY;I/F TO PANEL,SHP,15EX2
637110301039 SCREW;M3L4,K(+),NIW,NYLOK
634415100021 WIRE MOUNT;FW-2C-3M,50VX
637110301037 SCREW;M3L6,K(+),NIW,NYLOK
633200010001 WIRE;PACKING,FLAT,PRC
371103010808 SCREW;M3L8,FLNG/PAN(+),NIW/NLK
631412000402 XTAL;20MHZ,30PPM,20PF,HC-49/S,DIP
Y2
637110401005 SCREW;M4,L8,FLT(+),ZNW,NYLOK
637110401011 SCREW;M4L6,K(+),NIW,NYLOK
637110401010 SCREW;M4L8,K(+),NIW,NYLOK
637110401012 SCREW;M4L9,PAN(+),NIW
634215150002 SHIELDING MEATL A;EPSON,15EX2
634415120007 SIGNAL CABLE COVER;15AX
633700150006 SW;TACTILE,12V/50MA,1P,H4.3MM
SW1,SW2,SW3,SW4,SW5,
53
A
B
C
D
E
15AX2 INTERFACE BD
DRAWING DESCRIPTION
SHEET
DESCRIPTION
5
5
2
GMZAN1
R00--->R01
1.Connect A_GND to ADC_GND---->error.
2.Delete C47&C49 22P and Y1 50MHz---->function Bug
3.Add R21 33 ohm /C44 33P/X1 50Mhz
4.Change B3/B4/B6/B7 from 0 ohm to 120z/100Mhz---->EMI
5.Del R38/R39/R42/R43/R45 33 ohm---->EMI
6.Add B69/B70/B71/B72/B73 120z/100MHz ---->EMI
7.Change C16/C28/C35 from 10P to 15P---->EMI
8.Add C17/C29/C36 15P---->EMI
9.Add C149 1000P---->EMI
10.Change B65/B66/B67 from 220Z/100MHz to 0 ohm 1206---->EMI
11.Change R25/R40 from 510 ohm to 100 ohm--->function Bug
12.Add R122 0 ohm---->EMI
13.Change U5 from DIP to SO8---->Material issue.
14.Del R31/R32/R36/R37/R53/R54/R55 0 ohm ---->No need
4
3
4
POWER/MCU
R00--->R01
1.Change C83 from 22uF/25V to 10uF/16V/ R89 from 220K ohm to 47K ohm/ R90 from 4.7K ohm to 470K ohm--->RESET
2.Add Q12 MMBT3904L/R108 from 0 ohm to 10K ohm--->Bri_ctrl circuit
3.Add B74/B75/B76/B77/B78 300z/100MHz(273000130017)--->EMI
4.Change B21/B22/B23/B24/B68/B25/B26/B27 from 120z/100MHz to 300z/100MHz--->EMI
5.Change U9 from DIP8 to SO8 ---->EE
6.Del R109 0 ohm
7.Change U10 pin15(SOFT_PWR#) and pin16(AUTO_BRI_CTRL)---> F/W request
8.LED_GREEN connect to LED_GERRN--->error.
9.Add R123 0 ohm---->Bypass
10.Change Q9/Q10 from MM3904L to MMBT3906L--->Decrease power lose
11.Del R96/R99 0 ohm---->No need
12.Change R97/R98 0 ohm to NA---->No need
3
3
2
2
4
OUTPUT
R00--->R01
1.Add Q13 MMBT3904L / R121 4.7k ohm / R120 5.6K ohm ---->Pwm driver not enough.
2.Change R105 from 4.53K ohm to 1K ohm ---> modify integrator volue.
3.Mirror JP6 ,and change pin2 and pin3 function---->same as 1510A.
4.Add B79 300z/100MHz ---->EMI
5.Add C89 33P---->Stable function
6.Change R103 from 22 ohm to 4.99 ohm 1% and C91 from 22P to 10P---->EMI
7.Add C100 100uF/25V--->Material the same
8.Change R107 from 15K ohm to 4.7K ohm and R106 from 470 ohm to 1K ohm ---> Function Stable
DRAWN
ALPHA.HSU
DESIGNED
ALPHA.HSU
CHEAKED
APPROVED
ALPHA.HSU
ALPHA.HSU
1
1
Title
神神神神神神神神神神
15AX2 INTERFACE BD
Size
B
Date:
A
B
C
D
Document Number
10/05/00'
PCB ;630015120101
PCBA;640015120101
Sheet
E
1
of
Rev
00
5
5
3
ADC_GNDA
DDC+5V
+5V
2
B1 500z/100M
2
B2
220Z/100M
DVDDA
1
2
1
R1
10K
D1
BAV70LT1
B8
VCC_FROM_PC
C2
C3
22uF/16V
0.1uF
0.1uF
GND
B9
C5
C6
C7
C8
22uF/16V
0.1uF
0.1uF
22uF/16V0.1uF
10V
100
C16
0.1uF
C21
10P
NC
GND
ADC_GNDA
C18
1000P
B11
0.1uF
3
C45
U2C
4
5
C46
C47
6
0.01uF 0.01uF 0.01uF
7
7
74F14
SO14
74F14
SO14
R10
R11
R12
100
100
100
14
14
U2E
V_IN
+5V
11
U2D
10
9
8
2
4
5
59
60
83
97
130
135
145
147
152
156
ADC_GNDA
2
2
2
1uF/16V
1
4.7K NA NA
+3.3V B83
2
V POL
H POL
CLAMP O/P
HDHD+
VD
VCC
CLAMP TIME
V S/S OUT
V S/S IN
15P
H_IN
V_IN
115
116
117
118
119
120
121
122
HFS
HCLK
HDATA0
R33
+5V
RESET#
IRQ
43K
2
C61
C62
1
2
10uF/16V
0/NA
22
R39
33P
GND
+ C60
+5V
47uF/16V
R44
10K
R45
10K/NA
R46
10K
2
1
NC
1
R42
R34
R36
C57
0.47uF/16V
1
+5V
Q2 MMBT3904L_NA
C
E
A
D8 1N4148_NA
K
GND
B
C63
1
R47
18K_NA
0.01uF_NA
2
GND
HDATA1
HDATA2
HDATA3
R48
3K_NA
153
154
155
157
159
160
3
GND
H+
V+
GND
+
NC
10
C49
4
GND
8
7
6
5
M52347
10
1NC
10
100P 220P 4.3K
R41
GND
H_POLARITY
V_POLARITY
R27
2
R28
2
R29
2
1
4.7uF/16VC59 4.7uF/16V
2
2
1
+
1
H.STATE
V.STATE
CLAMP.SW
G.IN
GND
COM/H.IN
COM/H.DET
V IN
V DET
V TIME GATESW
NA
2
C58
100
VSYNC
GND
E/D
R20
5
OSC50MHz
+ C55 + C56 R32
V_IN
OUT
GND
19
18
17
15
14
13
16
20
12
11
2
NC
2 V_IN
1
R38
R31
3K
1
B
R30
18K
R37
0.01uF
2
VDD
1
A
C54
1
1N4148 GND
K
1
B
D7
1
2
3
4
1
1
NA
NA
1
NA R26
1
0.1uF
4.7K*4
U3
1
2
3
4
5
6
7
8
9
10
X1
8
RP9
V_STATE
R23
+5V
Q1 MMBT3904L
C
E
141
142
220Z/100M
2
+
+
56K
1
4.7uF/16V C51 4.7uF/16V
2
2
1
R25
74F14
SO14
C165
2
R22
C50
1
2
NC
2 H_IN
100
R7 NC
2
1
+
R24
7
7
74F14
SO14
+5V
150
148
R16 R17 R18
2
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
0.1uF
D
GND
+3.3V
C36
C37
C38
C39
0.1uF
0.1uF
0.1uF
0.1uF
GND
98
103
99
100
101
113
112
111
110
109
107
106
105
104
102
124
123
RED+
GREEN+
BLUE+
REDGREENBLUERESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
N/C
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
RESERVED
HSYNC/CS
VSYNC
TCLK
XTAL/RESERVED
STI_TM1
STI_TM2
SCAN_IN1
SCAN_IN2
SCAN_OUT1
SCAN_OUT2
PSCAN
OSD_HREF
OSD_VREF
OSD_CLK
OSD_DATA0
OSD_DATA1
OSD_DATA2
OSD_DATA3
OSD_FSW
HFS
HCLK
HDATA
RESETn
IRQ
MFB0
MFB1
MFB2
MFB3
MFB4
MFB5
MFB6
MFB7
MFB8
MFB9
MFB10
MFB11
PCLKA
PCLKB
PDISPE
PVS
PHS
PPWR
PBIAS
93
89
85
gmZAN1
VCC_FROM_PC
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PD16
PD17
PD18
PD19
PD20
PD21
PD22
PD23
PD24
PD25
PD26
PD27
PD28
PD29
PD30
PD31
PD32
PD33
PD34
PD35
PD36
PD37
PD38
PD39
PD40
PD41
PD42
PD43
PD44
PD45
PD46
PD47
VCC_FROM_PC
GND
71
70
69
68
67
66
64
63
62
57
56
55
54
53
52
51
50
48
47
46
42
39
38
37
36
35
34
32
31
29
28
27
26
25
24
23
22
20
19
17
16
15
14
13
10
9
7
6
PD0
PD1
PD2
PD3
PD4
PD5
PD6
PD7
PD8
PD9
PD10
PD11
PD12
PD13
PD14
PD15
PD16
PD17
PD18
PD19
PD20
PD21
PD22
PD23
PD24
PD25
PD26
PD27
PD28
PD29
PD30
PD31
PD32
PD33
PD34
PD35
44
45
43
R35
RP1
5
6
7
8
RP2 5
6
7
8
RP3 5
6
7
8
RP4 5
6
7
8
RP5 5
6
7
8
RP6 5
6
7
8
RP7 5
6
7
8
RP8 5
6
7
8
RP10 5
6
7
8
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
4
3
2
1
33
E_R2
E_R3
E_R4
E_R5
E_R6
E_R7
E_G2
E_G3
E_G4
E_G5
E_G6
E_G7
E_B2
E_B3
E_B4
E_B5
E_B6
E_B7
O_R2
O_R3
O_R4
O_R5
O_R6
O_R7
O_G2
O_G3
O_G4
O_G5
O_G6
O_G7
O_B2
O_B3
O_B4
O_B5
O_B6
O_B7
33
33
33
33
33
33
33
33
E_R2
E_R3
E_R4
E_R5
E_R6
E_R7
E_G2
E_G3
E_G4
E_G5
E_G6
E_G7
E_B2
E_B3
E_B4
E_B5
E_B6
E_B7
O_R2
O_R3
O_R4
O_R5
O_R6
O_R7
O_G2
O_G3
O_G4
O_G5
O_G6
O_G7
O_B2
O_B3
O_B4
O_B5
O_B6
O_B7
C
B
0
B14 1
2 120z/100M
B16 1
2 120z/100M
73
74
B17 1
B18 1
2 120z/100M
2 120z/100M
76
75
R40
R43
LCD_CLK
DE
V_SYNC
H_SYNC
EN_LCD
33/NA
33/NA
EN_LCD
EN_BL#
CVSS4
DVSS
SVSS
SYN_VSS
SRVSS2
RED94
GREEN- 90
BLUE86
14
14
U2B
GND
100
C28
12
33
40
65
BLUE+
BAV99LT1
R19
C27
114
126
140
151
158
0.01uF
108
149
C44
U1
CVDD4
SYN_VDD
GREEN+
11
21
58
0.01uF
D6
G_IN
C26
CVSS1
RVSS1
SRVSS1
RVSS2
CVSS2
RVSS3
RVSS4
CVSS3
C43
95
91
87
H_IN
C48
C25
1
8
18
30
41
49
61
72
RED+
+5V
BAV99LT1
HSYNC
100
0.1uF
125
139
0.01uF
C
R6
0.1uF
DVDD
SVDD
C42
V_STATE
D5
HS_VGA
C35
SRVDD1
SRVDD2
CVDD2
NC
VSYNC
C34
133
SUB_SGNDA
132
SUB_DGNDA
146
SUB_RGNDA
R8
C24
INPUT AC
COUPLING
10P
ADC_GNDA
100
C23
GND
C41
ADC_GNDA
R5
VS_VGA
0.1uF
DIGITAL
SUPPLY
DECOUPLING
DAC_DGNDA
PLL_DGNDA
PLL_SGNDA
DAC_SGNDA
PLL_RGNDA
R50
NC
0603
2
R49
NC
0603
C14
0.1uF
ADC_GNDA
1
75
22uF/16V0.1uF
C33
B_IN
100
C40
NC
C32
VDDA
96
92
88
84
D4
+5V
C31
ANALOG SUPPLY
DECOUPLING
B13
C22
22uF/16V0.1uF
10V
GND
C30
10P
BAV99LT1
R4
2
22uF/16V0.1uF
143
137
136
129
128
100
C29
NC
ADC_GNDA
C13
0.1uF
B12 220Z/100M
ADC_RVDDA
ADC_GVDDA
ADC_BVDDA
ADC_VDDA
D3
75
1
G_IN
GND
R3
C12
0.1uF
GND
C20
PLL_RVDDA
DAC_SVDDA
PLL_SVDDA
PLL_DVDDA
DAC_DVDDA
BAV99LT1
TO EXTERNAL SIGNAL CABLE
C11
0.1uF
RVDDA
127
131
134
138
144
ADC_GNDA
C10
B10 220Z/100M
C19
1
C9
C15
C17
ADC_GNDA
SUB_GNDA
ADC_GND1
ADC_GND2
BAV99LT1
82
81
80
78
D2
R2
75
HSYNC
VCC_3.3V
SVDDA
R_IN
PH_12P
R21
220Z/100M
220Z/100M
3
+
ADC_GNDA
B5
RVDD1
RVDD2
CVDD1
RVDD3
C4
0.1U
C163
ADC_GNDA 10uF/16V
C1
ADC_RGNDA
ADC_GGNDA
ADC_BGNDA
D
+3.3V
+5V
DDC_SCL
2120z/100M
DDC_SDA
2120z/100M
DDC+5V
2120z/100M VS_VGA
2120z/100M HS_VGA
1
+3.3V
DDC+5V
15P_NA
15P_NA 15P_NA
15P_NA
J1
B3 1
1
B4 1
2
3
B6 1
4
B7 1
5
6
VGA_B
7
8
VGA_G
9
10
VGA_R
11
12
79
77
C162
4
ADC_VDD1
ADC_VDD2
C160
C159
C161
GND
B19
B20
0
0
B21
0
GND
ADC_GNDA
R54
47K
R55
47K
GND
ADC_GNDA
U5 24C21
A
VSYNC
DDC_SCL
DDC_SDA
R56
R57
R58
100
100
100
7
6
5
C65
47P
C66
47P
VCLK
SCL
SDA
VCC
TEST
NC
WP
VSS
A
8
1
2
3
4
C64
NOTE:
ANALOG AND DIGITAL GROUNDS MUST BE
INTERCONNECTED AT A SINGLE POINT
DRAWN
DESIGNED
ALPHA.HSU
ALPHA.HSU
CHEAKED
APPROVED
ALPHA.HSU
ALPHA.HSU
0.1uF
GND
GND
Title
神神神神神神神神神神
15EX-TA;INTERFACE BD
Size
C
Date:
5
4
3
2
Document Number
Rev
PCB ;630015130002
PCBA;640015130001
01/12/01'
Sheet
1
2
of
01
5
5
4
3
2
R109
POWER CONN.
Q14
POWER_ON# 1
2
FOR 12V/5V I/P
47K
0603
500z/100M
3216
2sc1623
B
1,2 SHORT FOR 12V ADAPTOR
E
2
2,3 SHORT OR OPEN
B22
C
1
R110
2
10K
0805
5%
1
1,2 SHORT FOR 12V ADAPTOR
R111
2,3 SHORT OR OPEN
1
1
1
2
2
S
1
2
1
VIN
VOUT0
GND
VOUT1
1
1
1
C78
C79
+ 10uF/16V + 470uF/16V
2
CPWX4.3
2
C80
1uF
0805
16V
2
R70
165
0603
1%
CPWX4.3
1
1
21
10uF/16V
GND
2
R67
100
0603
1%
C77
1%
2
+
2
R66
499
4
EZ1084CT
1
1
1
+ C75
470uF/16V
2
2
C81
1uF
0805
16V
GND
3
100uF/25V
2
2
J2
CPWX8.3
1
+5VP
U13
21
R76
10K
0603
GND
AUDIO_PWR
R112
470
0603
E
C
KIA7045
R115
10K
+5VP
1
2
3
3PX1/.1/MA/GOLD
CPWX4.3 C84
0.1U/20V/NA
PANEL VDD SELECTOR
C85
0.1U/20V/NA
LCD POWER
C
GND
R114
0
GND
HANNSTAR/HSD150MX42-- 3.3V--->1,2 SHORT
GND
2
GND
POWER_ON#
R113
NC
0603
2
GND
B
2
A
VCC
RSTN
1
2
3
C83
+ 10uF/16V
1
GND
2
R75
1K
0603
RLZ15A
1
POWER BOARD 12V TO 5V
1
2
K
1%
+3.3V
U7
+5V
C82
10K 0603
D12
C
+5V
+5V +3.3V
+
E
Q5
CMMBT3906L
2 B
5V-->3.3V
1
B
1
R74
1
1 R71
22
0603
G
D
1%
GND
R72
100K
0603
R73
100K
0603
1%
GND
HUF75307D
Q4 MMBT3906L
E
C
R65
499
SR34
GND
D
Q3
VDD_12
D10
R69
1K
0805
A
12VIN
K
GND
1
2
D11
RLZ15A
R62
2.94K
C68
1uF
0805
16V
GND
L1 4.7UH/8A
1
2
CHOKE_ETQP_CDRH125
HIP6013
C76
0.01uF
GND
TO DC JACK BD
1N4148
MLL34B
C73
0.1uF
2
C74
33P
D9
14
13
12
11
10
9
8
2
GND
1
R63
40.2K
0805
VCC
NC1
NC2
NC3
BOOT
UGATE
PHASE
2
4.99K
0805
1%
GND
+5V
C72
0.1uF
RT
OCSET
SS
COMP
FB
EN
GND
1
GND
2
2
1 R64
1
2
3
4
5
6
7
1
1000P
0805
C71
1uF
0805
21
JP1
1
+ C69
330uF/16V
2
2
K
3
1
2
4
0.1uF
1
1
C70
C67
2
2
U6
1
2
1
2
3
4
5
6
GND
A
CHOKE1
COM_CHOKE_4A
1
GND
PH_6
12V
12V
GND
GND
5V
5V
FOR 12V/5V I/P
10K
0603
12VIN
D
1
VDD_12
2
12V-->5V
R117
510R/0805
GND
5
+5VP
R77
U8
1
2
3
4
10K
1
1
D14
RLZ5.1
R119
NC
0603
R120
47K
SOURCE1
SOURCE2
SOURCE3
GATE
DRAIN3
DRAIN2
DRAIN1
DRAIN
8
7
6
5
TPS1100D
R60
NC
0603
2
1
A
100P
7
1
C157
10u/16V C158
100n
6
1
Q
CL
C156
SWPSW
4
Q
CLK
GND
3
D
+5V
K
SOFT_PWR#
PR
2
14
R118
10K
VCC_LCD
VDD_12
C155
10uF/16V
U14A
74AHCT74
VCC
R116
10K
2
OVER VOTAGE PROTECTION
2
0603
E
B
C
MMBT3906L
ACTIVE H
+5V
47K
EN_LCD
GND
GND
RESET
2
R78
GND
POWER SWITCH
Q6
R79
4.7K
GND
+5V
Q7
4.7K*4
10K
RESET#
JP2
8
7
6
5
10K
SCL
SDA
R52
4K7
0603
4.7K
A0
A1
A2
VSS
1
2
3
4
24LC16B
GND
5
6
7
8
5
6
7
8
2
2300z/100M
2300z/100M
2300z/100M
2300z/100M
2300z/100M
2300z/100M
2300z/100M
2300z/100M
2300z/100M
GND
PARAMETER
EEPROM
KIA7042
2
VCC
WP
SCK
SI
B24 1
B25 1
B26 1
B27 1
B28 1
B29 1
B30 1
B31 1
B32 1
KEY_MENU#
KEY_SELECT#
KEY_UP#
KEY_DOWN#
HOT_KEY
SOFT_PWR#
LED_AMBER
LED_GREEN
1
2
3
4
5
6
7
8
9
PH_9
C86 C87 C88 C89 C90 C91 C92
1
R9
GND
RP13
4.7K*4
1
R85
100K/NA
C95
10uf/16V
U10
R84
1
4.7K*4
GND
4
3
2
1
4
3
2
1
1
GND
2
RP12
4.7K*4
+5V
1
1
RP11
0.1uF 4.7K*4
C94
R83
A
3
VCC
RP15
+5V
GND
OUT
RP14
MMBT3904L
470K
1
R81
47K
1
R82
D13
1N4148/NA
1
C93
0.1uF
1
R80
470
1
2
3
4
1
2
3
4
1
2
3
4
K
U9
B
+5V
RESET
8
7
6
5
8
7
6
5
8
7
6
5
+5V
B
GND
KEY_MENU#
KEY_SELECT#
KEY_UP#
KEY_DOWN#
HOT_KEY#
SOFT_PWR#
GND
LED_AMBER
LED_GREEN
GND
+5V
TO KEY SW BD
HDATA0
HDATA1
HDATA2
HDATA3
HCLK
HFS
AUDIO_PWR
BRI_PWM
RESET
+5V
JP3
2 0
R89
R90
IRQ
A
GND
V_STATE
AUDIO_PWM
0/NA
0/NA
AUTO_BRI_CTRL
AUDIO_PWM
C96
22P
TO DEBUG PORT
1
PH_5
1
2
3
4
5
R59 1
+5V
2
3
4
5
6
7
8
9
10
11
13
14
15
16
17
18
19
20
21
22
AUTO_BRI_CTRL
5V
AUTO_BRI_DETECT
AUTO_BRI_CTRL
GND
4
3
2
1
JP4
500Z
B34 1
B36 1
B35 1
B37 1
2
2300z/100M
2300z/100M
2300z/100M
C97
22P
AUTO_BRI_DETECT
R92
10K
Q10
GND
R121
MMBT3904L
Y2
R53 20MHz/22P GND
1M
2
HEADER_4
0
1
12
23
34
P1.0/T2
P1.1/T2EX
P1.2/ECI
P1.3/CEX0
P1.4/CEX1
P1.5/CEX2
P1.6/CEX3/WAIT#
P1.7/CEX4/A17/W
RST
P3.0/RXD
P3.1/TXD
P3.2/INT0#
P3.3/INT1#
P3.4/T0
P3.5/T1
P3.6/WR#
P3.7/RD#/A16
XTAL2
XTAL1
VSS
NIC
NIC
NIC
NIC
A8/P2.0
A9/P2.1
A10/P2.2
A11/P2.3
A12/P2.4
A13/P2.5
A14/P2.6
A15/P2.7
PSEN#
ALE/PROG#
AD7/P0.7
AD6/P0.6
AD5/P0.5
AD4/P0.4
AD3/P0.3
AD2/P0.2
AD1/P0.1
AD0/P0.0
VCC
EA#/VPP
EN_LCD
EN_LCD
EN_BL#
LED_AMBER# EN_BL#
LED_GREEN#
KEY_MENU#
KEY_SELECT#
KEY_UP#
KEY_DOWN#
24
25
26
27
28
29
30
31
32
33
36
37
38
39
40
41
42
43
44
AUTO_BRI_DETECT
HOT_KEY
SDA
SCL
B33
35
+5V
1
R87
C MMBT3906L
R88
0.1uF
2
GND
A
+5V
DRAWN
H_POLARITY
V_POLARITY
R91
ALPHA.HSU
E Q9
DESIGNED
ALPHA.HSU
15K
Title
ALPHA.HSU
神神神神神神神神神神
15EX-TA;INTERFACE BD
Size
C
Document Number
PCB ;630015130002
PCBA;640015130001
GND
Date:
3
ALPHA.HSU
470
LED_GREEN
C99
22uF/16V
GND
4
APPROVED
C MMBT3906L
GND
5
CHEAKED
B
2
GND
TO SENSOR BD
2
2
2
GND
470
LED_AMBER
R93
M6759
2
E Q8
B
15K
220z/100M
C98
2
2
33P 33P 33P 33P 33P 33P 33P
U11
R127 22
2
Sheet
01/12/01'
1
3
of
5
Rev
01
5
4
3
2
1
TO PANEL
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
C100C101C102C103C104C105C106C107C108C109C110C111C112C113C114C115C116C117
GND
J3
H_SYNC
1
B53 120z/100M
2
1
H_SYNC
C120
33P
B38
2
LCD_CLK
R97
19
17
15
13
11
9
7
5
3
1
0
GND
C122
10P
CLK
GND
GND
VCC_LCD
B68
2
2
120z/100M
DE
C119
33P
GND
VCC_LCD
R95
GND
CLK
GND
SHARP,HYUNDAI
NA
C
R98
HANNSTAR
100
GND
GND
1
1
+
GND
1
C125
0.1uF
GND
2
C126
0.1uF
2
2
500z/100M
C123
10uF/16V
CPWX4.3 R51
120
1/2W-AX
D
GND
B46
1
1
2
V_SYNC
C118
100P
EB5
GND
20
18
16
14
12
10
8
6
4
2
2
120z/100M
1
1
J4
EB4
GND
GND
GND
1
ER0
ER1
ER2
ER3
ER4
ER5
EG0
EG1
EG2
EG3
EG4
EG5
EB0
EB1
EB2
EB3
EB4
EB5
OR0
OR1
OR2
OR3
OR4
OR5
OG0
OG1
OG2
OG3
OG4
OG5
OB0
OB1
OB2
OB3
OB4
OB5
2
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
120z/100M
1
C
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
B39 1
B40 1
B41 1
B42 1
B43 1
B44 1
B45 1
B47 1
B48 1
B49 1
B50 1
B51 1
B52 1
B54 1
B55 1
B56 1
B57 1
B58 1
B59 1
B60 1
B61 1
B62 1
B63 1
B64 1
B65 1
B66 1
B67 1
B69 1
B70 1
B71 1
B72 1
B73 1
B74 1
B75 1
B76 1
B77 1
E_R2
E_R3
E_R4
E_R5
E_R6
E_R7
E_G2
E_G3
E_G4
E_G5
E_G6
E_G7
E_B2
E_B3
E_B4
E_B5
E_B6
E_B7
O_R2
O_R3
O_R4
O_R5
O_R6
O_R7
O_G2
O_G3
O_G4
O_G5
O_G6
O_G7
O_B2
O_B3
O_B4
O_B5
O_B6
O_B7
OR0
OR2
OR4
GND
OG1
OG3
OG5
OB0
OB2
OB4
GND
ER1
ER3
ER5
EG0
EG2
EG4
GND
EB1
EB3
40
38
36
34
32
30
28
26
24
22
20
18
16
14
12
10
8
6
4
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
D
39
37
35
33
31
29
27
25
23
21
19
17
15
13
11
9
7
5
3
1
2
GND
OR1
OR3
OR5
OG0
OG2
OG4
GND
OB1
OB3
OB5
ER0
ER2
ER4
GND
EG1
EG3
EG5
EB0
EB2
33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P
GND
GND
12VIN
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
C127C128C129C130C131C132C133C134C135C136C137C138C139C140C141C142C143C144
TO INVERTER
+5V
1
B78 500z/100M
2
1
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
2
33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P 33P
B
GND
C145
100uF/25V
CPWX8.3
2
R99
3K
GND
B
C146
PH_5P
0.1uF
GND
Q11
R102
MMBT3904L
1K_NA
C148
1
4.7K
0.1uF
C149
100uF/25V
CPWX8.3
1
B79
JP5
2
300z/100M
2
R101
2
BRI_PWM
5.6K
1
R100
12V
GND
BRT_RANGE
GND
ON/OFF
1
2
3
4
5
4
5
6
3
2
1
MTG3
ID3.2/OD8.0
12
11
10
4
5
6
MTG4
ID3.2/OD8.0
12
11
10
GND
TP1
TP1
GND
ALPHA.HSU
DESIGNED
ALPHA.HSU
CHEAKED
APPROVED
ALPHA.HSU
ALPHA.HSU
7
8
9
7
8
9
7
8
9
7
8
9
DRAWN
R103
1K
1
4
5
6
MTG2
ID3.2/OD8.0
12
11
10
3
2
1
3
2
1
4
5
6
3
2
1
+5V
MTG1
ID3.2/OD8.0
12
11
10
A
A
R104
GND
FD1
FIDUCIAL-MARK
FD2
FIDUCIAL-MARK
FD3
FIDUCIAL-MARK
FD4
FIDUCIAL-MARK
Q12
EN_BL#
FD5
FIDUCIAL-MARK
FD6
FIDUCIAL-MARK
FD7
FIDUCIAL-MARK
4.7K
FD8
FIDUCIAL-MARK
MMBT3904L
4
Document Number
1
1
1
1
1
1
1
Date:
5
神神神神神神神神神神
15EX-TA;INTERFACE BD
Size
B
GND
1
Title
3
2
01/12/01'
PCB ;630015130002
PCBA;640015130001
Sheet
1
4
of
Rev
01
5
5
4
3
2
1
1
12VIN
D
2
1
U15
R123
10K
R61 NC
1
D
L2
500Z/100M
VDD_12
1
2
3
4
2
2
R124 47K
B
1
AUDIO_PWR
E
MMBT3906L
C
Q15
SOURCE1
SOURCE2
SOURCE3
GATE
DRAIN3
DRAIN2
DRAIN1
DRAIN
8
7
6
5
TPS1100D
R15
10K
2
+5V
R105
1K
GND
R106
10K
C
Q13 10K
MMBT3904L
C150
1
AUDIO_PWM
0.1uF
2
AUDIO_GND
C151
100uF/25V
CPWX8.3
2
R107
AUDIO_PWM
1
C
SPK_RSPK_R+
SPK_LSPK_L+
1
AUDIO_GND
+ C152
330uF/16V
JP6
1
2
3
4
SPK_RSPK_R+
SPK_LSPK_L+
TO SPEAKER UNIT
2
HEADER_4
AUDIO_GND
AUDIO IN
JP7
AUDIO_IN_L
SP1+ 13
I/P1
DC1
L
SP111
C154
AUDIO_IN_R
2
1
R126 1U/16V/NA
CPWX4.3
5K1
R125
5K1
5
7
2
R108
10K
I/P2
DC2
NC
R13
R
0
1
SP2+ 8
2
R14 0
GND GND GND
6
8HEADER
B
SP2- 10
1
2
9
B
1
2
3
4
5
6
7
8
U12
3
1
12
AUDIO_IN_L
GND
GND
AUDIO_IN_R
EAR_PHONE_R+
EAR_PHONE_REAR_PHONE_LEAR_PHONE_L+
4
TDA7057AQ
CPWX4.3
1U/16V/NA C153
2
1
AUDIO_GND
AUDIO_GND
GND
AUDIO_GND
AUDIO_GND
TO DC JACK BD
EAR_PHONE_R+
EAR_PHONE_REAR_PHONE_LEAR_PHONE_L+
DRAWN
Alpha.Hsu
DESIGNED
Alpha.Hsu
CHEAKED
Alpha.Hsu
APPROVED
Alpha.Hsu
A
A
Title
神神神神神神神神神神
15EX-TA;INTERFACE BD
Size
B
Date:
5
4
3
2
Document Number
01/12/01'
PCB ;630015130002
PCBA;640015130001
5
Sheet
5
of
1
Rev
01
5
D
4
SW6
SW5
4
3
1
2
HOT_KEY
4
3
SW4
1
2
DOWN
3
SW3
4
3
1
2
MENU
4
3
SW2
1
2
SELECT
2
1
D
SW1
4
3
1
2
UP
4
3
1
2
SW
JP1
KEY_MENU#
KEY_SELECT#
KEY_UP#
KEY_DOWN#
HOT_KEY
SOFT_PWR#
LED_AMBER
LED_GREEN
GND
KEY_MENU#
KEY_SELECT#
KEY_UP#
KEY_DOWN#
HOT_KEY
SOFT_PWR#
LED_AMBER
LED_GREEN
GND
1
2
3
4
5
6
7
8
9
PH_9
C
TO INTERFACE BD
3
D1
LED
2
G
Gr
Re
1
C
B
B
DRAWN
Alpha.Hsu
DESIGNED
Alpha.Hsu
CHEAKED
APPROVED
Alpha.Hsu
Alpha.Hsu
A
A
Title
神神神神神神神神神神
15EX-TA ;KEY SW BD
Size
B
Document Number
PCB ;630015130003
PCBA;640015130003
Rev
01
Date:
5
4
3
2
01/12/01'
Sheet
1
1
of
1
5
4
3
2
1
D
D
J2
JACK
J1
2
1
2
3
4
5
6
1
3
6HEADER
J1 IS V-TYPE
C
C
3
2
1
MTG1
J1 & J2 ON THE SAME SIDE
ID3.2/OD8.0
12
11
10
7
8
9
4
5
6
B
B
DRAWN
DESIGNED
Alpha.Hsu
Alpha.Hsu
CHEAKED
APPROVED
Alpha.Hsu
Alpha.Hsu
A
A
Title
PWA;PWA-15AX-TA/JACK_BD
Size
A
Date:
5
4
3
Document Number
PCB :630015120002
PCBA:640015120002
Wednesday, April 19, 2000
Sheet
2
Rev
01
1
of
1
1
LCD MONITOR 15EX2 MAINTENANCE
REFERENCE MATERIAL
“ 15EX2 ENGINEERING SPECIFICATION ”
Jeff.Lee / Mitac
“ gmZAN1 DATA SHEET ”
Genesis Microchip Co.
“ THE HM15EX2 PRODUCT SPEC “
Jeff.Lee / Mitac
54
SERVICE
SERVICE MANUAL
MANUAL &
& TROUBLESHOOTING
TROUBLESHOOTING GUIDE
GUIDE FOR
FOR
15EX2-TA
15EX2-TA
Sponsoring Editor : Shoestring Tsai
Author : Richard.Wang
Assistant Editor : Kelly Chiang
Publisher : MITAC INTERNATIONAL CORP.
Address : 4F, NO.18, PU-DING ROAD, HSINCHU, TAIWAN, R.O.C.
TEL : 886-3- 5645850
Fax : 886-3- 5781245
First Edition : May. 2001
E-mail : Jesse.Jan @ mic.com.tw