H-Size Adjust - Acer V551 Service Manual

Acer V551 (new) CRT Monitor Service Guide

5. H-size adjust

H-size error
Yes
No
IC801 pin 34
PWM output ok?
Yes
Check Q301
No
base adjust ok?
Yes
Check EWDRV
No
output ok?
Yes
No
Check Q307
adjust range ok?
Yes
No
Is the voltage
of C316 ok?
Confidence and Property
Chapter 4 Trouble Shooting
Replace IC801
Check Q301 &
around ckt
Replace IC201
Check Q312,
Q307, R307, R308
Check Q302,
Q307, D307
6