HP mx703 Service Manual page 23

5-4 No Vertical Scan (Raster is one horizontal line)
No Vertical Scan
Check I301 voltage of
pin 1 is 12V, pin 4 is -
12V
Yes
Check
pin 5 O/P waveform at
I301
Yes
Check
pin 6, 7 of I301
waveform
Still no vertical scan
Check or replace CRT
Ckeck or replace
No
I301.
Check R312,
No
R307, R306, R313
Replace I401
No
HP mx703/m703
Page 21