Sony D98 chassis Operation Manual page 33

Check IC004, IC005,G2
control circuit. IC001
3
pin 6 and FBT
Check connections &
signal at CN309 pin 1I
Check CN309 Pin 3
Check IC002 and IC004
VISIBLE RETRACE
C
Check white balance
adjustment and check "H
Blank" register value.
No
Is G2 voltage correct?
Yes
No
Is
blanking pulse present on pin18
of IC001 on A-Board?
Yes
No
Is blanking
pedestal present in the
waveforms at pin 12 of
IC001?
Yes
No
Is
blanking pulse present on all
cathodes?
Yes
Done
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Yes