ViewSonic 21PS Service Manual page 83

| Ina norizontat sync from PC. then the
| power save circutt becomes active.
H. SYNC DOES NOT HOLD
INCORRECT v.PCC
CHECK 719
CHECK Q717
CHECK ICsot
CHECK ICS8t
CHECK 10503
CHECK 0762
CHECK ICs02
1e7EN(I7)- (22)
1G761 17)
Pee Bae
verer ie) [vee GAIN
ve7ei i) [v.pee_comner | 27
vera: 20) [Parauce.ocraw | zav
TERAPEZOIOO 22v
Ino vertical sync from PC, then the
power save circuit becomes active.
V. SYNC DOES NOT HOLD
CHECK IC90t
VS_OFF Signal Line
CHECK R400
VS Signal Line
ves
CHECK DY
CHECK 16490
CHECK G49
CHECK ICSOt