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DEF-POWER failure:
Main-Power check flow
FP01
blown?
POW./DEF. PWB
No
DP09 is lit?
POW./DEF. PWB
Yes
Check the other
DIAGNOSIS LED
No
POW./DEF. PWB
Some LED are lit?
No
POW./DEF. PWB
0V
Yes
While the startup,
V>20V at IP01(4)
transiently?
No
POW./DEF. PWB
Check DP32, CP34, DP31
POW./DEF. PWB
Over current in live side.
Yes
Check IP01, TP01, CP06, and others connected
to IP01(3)
POW/DEF. PWB
No Power for IP01.
No
Check IP01, DP07, DP15, DP08, QP01, RP17, RP18
and etc.
POW/DEF. PWB
Yes
Some LED are not lit?
No
POW./DEF. PWB
Deflection circuit
Check flow
20V
power on
+B error Amplider is not function
Check DP31, GP32, IP02, IP03 and EP36
POW./DEF. PWB
DP47 is not lit.
Yes
DP48 is not lit.
DP49 is not lit.
15V
10V
NO +B (120) for H def. and HV
Check DP31, CP32, IP03, EP35, EP36,
QH01 others connected to +B line.
POW./DEF. PWB
NO +28/-28V for V def. and Conv.
Check EP31, EP32, DP33, CP36, DP34,
CP38 and etc.
POW./DEF. PWB
NO power for digital conv. Unit.
Check EP33, DP35, CP40, IP05, DP50,
CP48 and etc.
POW./DEF. PWB
CONV. PWB
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