HP CRT Monitor s7500

Page 21
HP S7500/MV7500/CV7500
5-4 No Vertical Scan (Raster is one horizontal line)
Ckeck or replace
I301.
Check R312, R307,
R306, R313
Yes
Check I301 voltage of
pin 1 is 12V, pin 4 is
-12V
Check
pin 5 O/P waveform at
I301
No Vertical Scan
No
Yes
No
Check
pin 6, 7 of I301
waveform
Still no vertical scan
Check or replace CRT
Replace I401
No