4-6
4. Troubleshooting
4-4. No Video (DVI)
Symptom
The LED power turns on but the screen is blank when the DVI cable is connected.
-
Major
checkpoints
Check the DVI cable connections.
Check whether the LVDS cable is connected correctly to the panel.
Check whether the lamp connector of the panel is connected correctly to the IP board.
-
-
-
Diagnostics
Yes
Check IP board
No
Does led persists green light after
power on?
Dose proper 5V appear at pin No. 14
of CN102?
Check DVI cable connection
No
Yes
Does proper signals appear at pin
No.6(SCL) and No.7(SDA) of
CN102?
Check PC state
No
Yes
Does proper clock signals appear at
pin NO.6 and NO.7 of IC203?
Check circuits related
to IC 401
No
⑥
Yes
Does proper clock signals appear at
pin NO.11,12,23,24 of CN400?
No
Change main board because
of scaler problem.
Yes
Check connection between main board
and panel. Change Panel.
⑦
Caution
Make sure to disconnect the power before working on the IP board.
Summary of Contents for SyncMaster 2232MW
Page 23: ...5 18 5 Exploded View Part List Memo ...
Page 27: ...1 4 1 Precautions Memo ...
Page 36: ...7 5 7 Schematic Diagram 7 2 Schematic Diagrams 7 2 1 Power ...
Page 37: ...7 6 7 Schematic Diagram ...
Page 38: ...7 7 7 Schematic Diagram ...
Page 39: ...7 8 7 Schematic Diagram 7 2 2 PC Input ...
Page 40: ...7 9 7 Schematic Diagram 7 2 3 DVI HDMI Input ...
Page 41: ...7 10 7 Schematic Diagram 7 2 4 DDC ...
Page 42: ...7 11 7 Schematic Diagram 7 2 5 TMDS Switch PI3HDMI412FT ...
Page 43: ...7 12 7 Schematic Diagram 7 2 6 Component Ext RGB ...
Page 44: ...7 13 7 Schematic Diagram 7 2 7 AV S Video ...
Page 45: ...7 14 7 Schematic Diagram 7 2 8 Tuner SCALER IC300 ...
Page 46: ...7 15 7 Schematic Diagram 7 2 9 Scaler MST67889 ...
Page 47: ...7 16 7 Schematic Diagram 7 2 10 Audio Processor TDA7266 ...
Page 48: ...7 17 7 Schematic Diagram 7 2 11 Audio AMP ...
Page 50: ...7 20 7 Schematic Diagram This Document can not be used without Samsung s authorization ...
Page 51: ...7 21 7 Schematic Diagram This Document can not be used without Samsung s authorization ...
Page 52: ...7 22 7 Schematic Diagram This Document can not be used without Samsung s authorization ...
Page 53: ...7 23 7 Schematic Diagram This Document can not be used without Samsung s authorization ...
Page 54: ...7 24 7 Schematic Diagram Memo ...
Page 55: ...7 18 7 Schematic Diagram 7 2 12 Function LVDS EEPROM ...