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ViewSonic
VSXXXXX service manual
Models:
VSXXXXX
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Troubleshooting
Specs
Install
Parts list
Block Diagram
Jump Wire
Adjustment Procedure
Do the following to adjust the display setting
Place the monitor on a clean and soft foam pad
Precautions and Safety Notices
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Contents
Model No. VSXXXXX 23.6” Color TFT LCD Display
Service Manual
ViewSonic VG2427wm
VG2427wmSM Rev. 1a Mar
Revision History
Copyright
Disclaimer
Trademarks
TABLE OF CONTENTS
1. Precautions and Safety Notices
1. Precautions and Safety Notices
Correct Methods
1.4 Handing and Placing Methods
Incorrect Methods
Place the monitor on the lap, the panel surface must be upwards
Place the monitor on a clean and soft foam pad
The panel is placed facedown on the lap. That may cause “Mura.”
2. Specification
3. Front Panel Function Control Description
Do the following to adjust the display setting
The following tips may help you optimize your display
Main Menu Controls
Audio Adjust
Control Explanation
Manual Image Adjust displays the Manual Image Adjust menu
Page
4. Circuit Description
4.1 Main Board
Pin Assignment
Page
Page
Page
Page
Pin Descriptions
Name
Pin #
Function
IC901 LD7576
4.2 Power Board
Typical Application
1 CT 2 COMP 3 CS 4 GND 5 OUT 6 VCC 7 NC 8 HV
Block Diagram
Function
Functional Block Diagram
Pin Diagram
IC801 TA9687GN
Pin Description
Pin No
I/O1
Names
5. Adjustment Procedure
5.1 White balance, Luminance adjustment
Enter into Burn/in mode
Enter into the factory mode
5.2 Firmware Upgrade Procedure
ISP Board
Max Brightness measurement 250 cd/m2 Test conditions
5.2.1 Equipment needed
Hardware Connect status 5.2.2 Update the NOVATEK’S firmware
LPT Cable
VGA Cable
You should jump the pin to “For Flash” at ISP Board Connect to the
Double click “Writer.exe”
Page
5.3 DDC Key in Procedure
5.3.2 Install software
5.3.3 Connect the DDC board as follow
Connect to the PC LPT
For analog
a. Double-click ,appear as follow Figs: b. Click
R3V080100001 12 codes, for example
d. Unit appears the following Fig, writer completed
6. Troubleshooting Flow Chart
7. Block Diagram
7.1 Main Board
7.2 Power Board
8.1 Main Board
8. Schematic Diagrams
20081225
FB402
Volume#
TO252
SOT223
ADD R711
0402
NT68667UFG/C
ADD R446,447
20K OHM 1/16W
8.2 Power Board
JUMP WIRE
bom change
2008-08-20
POWER XFMR7
100K 1/10W 1%
R813
100K 1/10W 5%
VOLUME
IC with Heat-sink90G6295-3
4 Lin
2 Rin
KEY1 POWER
POWER
3 POWER 4 BLUE 5 YELLOW
KEY2 DOWN
Hub side
12V to
Upstream
Dow nstream
9. PCB Layout Diagrams
9.1 Main Board
Page
9.2 Power Board
Page
9.3 Key Board 9.3 USB Board
Page
10. Exploded Diagram and Exploded Parts List
10.1 EPL
Part Number
Description
BEZEL
Description
10.2 PPL
Part Number
11. Recommended Spare Parts List
TDRMNDDKWBVSPC
Location
Part Number
A34G0936 KR 3B0100
REAR COVER
A85G0133101
SHIELD-AC
R105
061G0402101
RST CHIPR 100 OHM +-5% 1/16W
R109
R401
061G0402470 0F
RST CHIPR 0402 470 OHM +-1% 1/16W
R110
C302
065G0402224
CAP CER 0.22UF -20%-80%
C401
DOME SWITCH 5PCS
POWER BOARD
ZD401
093G
CN801
033G8021 2E
WAFER
IC903
0M1G
8120
SCREW
Q90G6263
R840
061G0603105
RST CHIPR 1M OHM +-5% 1/10W
R841
R935
061G1206101
RST CHIPR
OHM +-5% 1/4W
POWER BOARD PCB
JUMPER WIRE
C929
065G1206102
CONNECTOR
Q37G0139013
VSC 23.6 HINGE ASSY
Q40G 58170931A
R718
061G0402104
RST CHIPR 100 KOHM +-5% 1/16W
R719
12. Different Parts List
Diversity of TDRMNDDYWBVSPC compared with TDRMNDDKWBVSPC
Location
Part Number
Reader’s basic dada
Assessment
Reader’s Response