Sanyo AAI-A Series Training Manual page 40

Trouble Shooting Chart
Startpoint symptom: Dead
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r
I Disconnect power failure detection diodes, ~
Caution:
~ D362, D393, D433, D468, D486
I I
Do not keep
TV set on
more than 5
seconds during
I
I
L
;
the following
check otherwise the TV set may has a
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[
damage.
keep disconnection and check as follow
Check voltage on pin 31 of IC101
F
I
5V
IC701, R776 or detection circuit
v
Ov
IC701 , R792, Q792, Q793,
Check voltage on Q353-collector
P
D361
I
1OV-40V
t
Check voltage B1 (+140V) on both
80V or less
Short
circuit on B1 line
ends of C361
*
D351 , C361 , Q432, C426,
D486, C1793, C1794
I
80V or more
v
Check voltage B2(+24V) on
Ov
terminal "KAA-3"
*
I
24V
t
Check voltage B4(+24V) on pin 6 of
Ov
*
IC451
24V
Short circuit on B2 line
D355, C365, R362, IC1102,
CI103, C1111
Short circuit on B4 line
IC451 , C451 , D353, C363, R364
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