1-8-2
E7A70TR
FLOW CHART NO.6
P-ON+10.5V is not outputted.
Is 11V voltage supplied to the emitter of Q1054?
FLOW CHART NO.7
P-ON+10V is not outputted. (P-ON+10.5V is outputted normally.)
Is the "L" pulse outputted to the collector of Q1056?
Check Q1054 and their periphery, and service it
if defective.
No
No
Yes
Yes
Yes
Is the "H" pulse outputted to Pin(53) of IC1501?
Check D1063, D1064, C1064, L1052 and their
periphery, and service it if defective.
FLOW CHART NO.9
EV+32V is not outputted.
Is the supply voltage 44V fed the cathode of D1068?
No
Yes
Check D1701 and their periphery and service it
if defective.
Check D1068, C1067 and their periphery, and
service it if defective.
FLOW CHART NO.10
VIDEO+5V is not outputted. (P-ON+10.5V is outputted normally.)
Is 5V voltage supplied to the collector of Q1057?
No
Yes
Replace Q1057.
Check D1058, C1060, C1061, L1051 and their
periphery, and service it if defective.
Replace IC1501.
No
Replace Q1056.
FLOW CHART NO.8
P-ON+5V is not outputted.
Is 5V voltage supplied to the emitter of Q1053?
Is the "L" pulse outputted to the collector of Q1056?
Check Q1053, D1060 and their periphery,
and service it if defective.
No
No
Yes
Yes
Yes
Is the "H" pulse outputted to Pin(53) of IC1501?
Check D1058, C1060, C1061, L1051 and their
periphery, and service it if defective.
Replace IC1501.
No
Replace Q1056.
Check Q1151, D1151 and their periphery, and
service it if defective.