5. Troubleshooting (continued)
ACER G24
25
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5.6Abnormal Plug and Play Operation
5.6.1Abnormal DDC2
Failure Point
Confirm the output of serial |
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data on I312 pin6 synchronize SCLK at |
| NG |
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| I312 is defected |
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TTL level |
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OK
Failure Point
1.The host machine isn’t communicating in DDC2 mode.
2.The video cable may have defected or may not be established connection for DDC.
3.The I312 pin6 and P304 pin15 may have no signal or incorrect.
4.The R374, R377 is open.
5.I312 pin6 is short.
6.The input source cable is defected.
7.Check I312 pin5 signal whether if correct.
5.6.2Abnormal DDC2 (DVI)
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| Failure Point |
Confirm the output of serial |
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data on I313 pin6 synchronize SCLK at |
| NG |
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| I313 is defected |
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TTL level |
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OK
Failure Point
1.The host machine isn’t communicating in DDC2 mode.
2.The video cable may have defected or may not be established connection for DDC.
3.The I313 pin6 and P305 pin6 may have no signal or incorrect.
4.The R393 or R397 is open.
5.I313 pin6 is short.
6.The input source cable is defected.
7.Check I313 pin5 signal whether if correct.
