HP S7500/MV7500/CV7500
5-4 No Vertical Scan (Raster is one horizontal line)
No Vertical Scan
Ckeck or replaceCheck I301 voltage of
I301.pin 1 is 12V, pin 4 isNo
-12V
Yes
Check
Check R312, R307,pin 5 O/P waveform atNo
R306, R313I301
Yes
Check
pin 6, 7 of I301NoReplace I401
waveform
Still no vertical scan
Check or replace CRT
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