5 Troubleshooting
5-2 No Video
Check signal cable and connection.
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| Does the outpus signal appear at RA403 and | ||||||||||
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| R411 of IC406? (LDTGB, LVSYNCB, LHSYNCB, | ||||||||||
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| LCKBB) |
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| Yes | |||||||||
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No |
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| Is the | output of Pins 1, 17 of IC501 High ? | |||||||||
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| No | |||||||||
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Check IC501 and related circuit
Does the analog video signal appear at R211, R212, R215? (BLUE, GREEN, RED)
(IC201)
Yes
Does the sync signal appear
at the output of Pin 14 of IC201and Pin 3 of IC 206 ?
56
Yes
Does the input signal appear at the Pins 40, 41 of IC 300? 7 8
(PLL H*V
Yes
During power
appear at the Pin 29,30 of IC300?
Yes
Do the clock and sync signal appear at Pin 115, 117 of IC 300? 9 10
(DCLKAB, MX_HSYNC) and does the digital video signal appear at thr output port PDA, PDB)?
Yes
During power
appear at the R 407 and R 408 ?
Yes
Check IC 406 and related circuit.
Yes
No
No
No
No
No
No
Check
Check IC201 and related circuit.
Check IC201, IC206 and related
circuit.
Check the related circuit for these
ports.
Check IC501 and related circuit.
Check IC 300 and related circuit.
Check IC501 and related circuit.
SyncMaster 800TFT |
