5 Troubleshooting
5-2
GY17HS*/GY17HSS*/GY17HSG*
Is there sync and data output
R302, R303, R305, R304 and RA301 ~ RA312?
5-2 No Video
Check signal cable connection and power.
Yes
Check the LVDS_EN at
R301 is high or not.
Normal state is high.
Does the output signal appear at
Pin 8~13, 15, 16, 18~23, 25~30 of CN402?
Yes
Yes
No
Check the IC101
and related circuit.
No
Check IC303 and related circuit.
No
There are DC 5V at Pin 1, 2 and 3 of CN402?
Yes
Does sync appear at Pin 8 and 10 of IC201?
Do X301 oscillate properly?
Yes
Is there R, G, B input at R427, R428 and R429?
Replace or
check related circuit.
No
Check input part.
No
Check the power related to
IC303 and output part.
No
Yes
1 2
3
4
5
6
Replace LCD panel.
5-3 No Touch Screen (GY17HS*)
Yes
There are DC 5V at Pin 2 of CN201?
Replace I/P board or
check related circuit.
No
Replace Touch Screen Ass’y board.
Summary of Contents for GY17HS Series
Page 18: ...5 Troubleshooting GY17HS GY17HSS GY17HSG 5 3 1 WAVEFORMS 2 3 4 5 6 ...
Page 20: ...6 2 GY17HSS 6 Exploded View Parts List 6 2 GY17HS GY17HSS GY17HSG ...
Page 21: ...6 3 GY17HSG 6 Exploded View Parts List GY17HS GY17HSS GY17HSG 6 3 ...
Page 41: ...8 Block Diagrams 8 2 GY17HS GY17HSS GY17HSG 8 2 GY17HSS GY17HSG ...