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Panasonic C1381 Service Manual page 25

Color computer display

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32us
The horizontal deflection
circuit is defective.
Is the voltage across C864
100V ~110V
?
NO
{s F801 normal ?
YES
ls the power supply circuit
normal ?
YES
is the waveform at the base
of 0553 normal ?
-13V
NO
Is the waveform at the base
of Q552 normal ?
Is the waveform normal at
pin 43 of IC5002 ?
{s the voltage at pins 50 and 40
of IC5002 about 12.0V ?
YES
C5002
is defective.
NO
YES
YES
YES
Replace F801 and
power on again,
C1381
The power supply circuit is
defective or 0553, 0559 or
D560 is defective.
NO
ls F801 normal ?
YES
The FBT is defective.
Q552 or T5511 is defective.
Q559 is defective.
Check the 12V line.
Check 1C504.
aOR
YES
Are 0553, D559 and
D560 normal ?
NO
Replace F801 and 0553,
D559 or D560.
YES
Replace F801.

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