Service manual

CA-30
CA TROUBLESHOOTING
4. No Video
Start
Is raster present
on the screen?
Is 1.07 kVp-p
signal present on
collector of HOT?
Is regulated B+
present across
CX3420?
Check power
supply.
Check TX3204.
Check HOT and
H-drive circuit.
Is there video at
pin 37, ICX2200?
Check Q1201,
Q1202
Is composite
video present on
pin 41, ICX2200?
Replace
ICX2200.
Is 0.76 Vp-p luma
signal present at
pin 43, ICX2200?
Check Q2206
and/or DL2200.
Are RGB signals
present on pins
3-5, connector
5C2?
Are Q2201, 2202,
2203 OK?
Replace Q2201,
2202, 2203.
Is +215 VDC
present across
C5101?
Check TX3204.
Check G2
adjustment.
Yes
No
Yes Yes
Yes
Yes
Yes
Yes
Yes
Yes
No No
No
No
No
No
No
No