ViewSonic VG181 - Page 45

ViewSonic Service Manual
July 2000 - Version 1.0 VG181
TROUBLE SHOOTING
TROUBLE WITH THE DDC READING
Support DDC 1/238
1. Analog cable ok ?
Analog DDC OK ? 2. Check signal (U8 to P2)
3. Check U8
4. is compliant protocol ?
Support DDC2B
1. Digital cable ok ?
2. Valtage of VCCX ok 7
3. Gheck signal (U2 to p1}
4, Check U2
5. ls compliant protocol ?
Digital DOC OK ?
Page 43
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