Sony D98 chassis Operation Manual page 53

Check connector
CN309
10
and IC003
Check IC001
and IC003
Replace parts
& Verify
Check IC004
and +B
Check IC005
G2 control circuit
and FBT
VIDEO - A BOARD
12
OK
No
2
Check if I C bus
pins
(CN309 pin6.8)
Yes
No
Check
IC001 pins 20
24 and 27
Yes
No
Check
IC002 pin 1,3,
and 5 OK?
Yes
No
Are cathode
DC levels and
waveforms
Correct?
Yes
No
Is G2 voltage
correct?
Yes
Change CRT
Done
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