Diagnosis; Troubleshooting - Pioneer DV-LX50 Service Manual

5

5. DIAGNOSIS

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5.1 TROUBLESHOOTING

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POWER DOES NOT TUNER ON
Is the voltage at pin 6 and 7
of CP502 about 4V and at
pin 10 of CP502 about 5V?
Is the voltage at pin 4 of
IC1701 about 3V and pin
3 of IC1702 about 1.8V ?
Is the voltage at pin 4
of IC1703 about 5V?
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L 13942296513
Is the waveform at
X4001 about 1.5V?
Write DVD ROM DATA.
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No
Yes
No
Yes
No
Yes
No
Yes
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3 6 7 1 3 1 5
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DV-LX50
7
8
9 4 2 8
Check at 4V line of POWER
BLOCK.Check IC503 and
peripheral circuit.
Check of IC1701,1702.
Check of IC1703.
0 5 8 2 9 9 4 2 8
Check of X4001,IC4002
and peripheral circuit.
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9 9
A
B
C
9 9
D
E
F
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