5 Troubleshooting
5-2
GY15MS*/GY17MS*
5-1-2 No Video [Analog]
Check signal cable and connection.
Check PC signal.
No
No
No
Does the analog video signal appear at
R107, R108, R109? (RED, GREEN, BLUE)
Yes
Check R104, R103
and related circuit.
Check PC signal.
Does the sync signal
appear at R104 and R103? (AHS, AVS)
No
Check IC402 and related circuit.
No
Yes
Does the video signal
appear at the output port?
10
11
Does the video signal appear
at the Pin 48, 47, 46, 45, 42, 41, 40, 39, 38, and 37 of
IC302?
Yes
Is Pin 4 (BLIGHT_EN) of CN102 high?
Check TFT-LCD panel and inverter.
Yes
Replace IC402.
Yes
9
8
7
6
5
Check IC402 and related circuit.
No
Does the input signal appear at Pin 103, 105, 102 and 104 of
IC402 (DHS,DVS,DEN,DCLK)?
4
3
2
1
Summary of Contents for GY15MS series
Page 8: ...2 Product Specifications 2 4 GY15MS GY17MS Memo ...
Page 16: ...4 Alignments and Adjustments 4 4 GY15MS GY17MS Memo ...
Page 21: ...5 Troubleshooting GY15MS GY17MS 5 5 WAVEFORMS 1 2 3 4 5 6 7 8 9 10 11 ...
Page 22: ...Memo 5 Troubleshooting 5 6 GY15MS GY17MS ...
Page 24: ...6 Exploded View Parts List 6 2 GY15MS GY17MS 6 2 GY17MS ...
Page 42: ...Memo 7 Electrical Parts List 7 18 GY15MS GY17MS ...
Page 43: ...GY15MS GY17MS 8 1 8 Block Diagram 8 1 GY15MS ...
Page 44: ...8 Block Diagrams 8 2 GY15MS GY17MS 8 2 GY17MS ...
Page 54: ...11 Schematic Diagrams 11 6 GY15MS GY17MS CONFIDENTIAL Memo ...