參數(shù)資料
型號(hào): GH19A*_191N
英文描述: Monitor_ICs:GM5020-01H NT7181 524C80D81 416S1020 NT68F63
中文描述: Monitor_ICs:GM5020 - 01H NT7181 524C80D81 416S1020 NT68F63
文件頁數(shù): 16/38頁
文件大?。?/td> 985K
4 Troubleshooting
4-2
GH19A*
CONFIDENTIAL
4-1-2 No Video
Check signal cable and connection.
Check PC Signal.
No
No
No
Does the analog video signal appear at
R718, R717, R716 (RED, GREEN, BLUE)
Yes
Check R582, R211
and related circuit.
Check PC Signal.
Does the sync signal appear
at Pin 4 of R582 and R211
10
(A_H*V_SYNC, A_V_SYNC)
No
Check IC521 and related circuit.
No
Check IC301 and related circuit.
No
Yes
During power on-off, does the input signal appear
at Pin 14, 15, 17, 18, 20, 21 of IC521
(HCLK,HFS,HDATA(0),HDATA(1),HDATA(2),HDATA(3))
Yes
Does the video signal
appear at the output port
11
Does the video signal appear
at the Pin 48, 47, 46, 45, 42, 41, 40, 39, 38, and 37 of
9
8
IC401 and IC402
Yes
Does proper ‘High appear at ‘Collector’ of Q108
Check TFT-LCD panel and Inverter.
Yes
Replace IC401 or IC402.
Yes
7
6
5
Check Q108, IC521 and related circuit.
No
Does the input signal appear at Pin 27, 28, 30, and 31
of IC401 and IC402
(DHS,DVS,DEN,DCLK)
4
3
2
1
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