LG CED-8042B Manual page 52

RFDC OUTPUT is abnormal.
Is RFDC output normal?
(IC501 pin 141)
NO
Is RRF output normal?
(IC601 pin 63)
YES
Does IC604 operate
normally?
YES
Is MPXO (RRF) output normal?
(IC601 pin 64)
YES
Is MPXO (RRF) input normal?
(IC202 pin 81)
YES
Check the cold soldering for the
R203, C272 around IC202 pin 81.
If it's OK, replace IC202 (MICOM).
D
Is A, B, C, D output signal
of Pick-up normal?
(CN601 pin 9, 10, 15, 16)
YES
Check the cold soldering for the area
between Pick-up connector and IC601.
If it's OK, replace IC601 (AK8563)
YES
Is FOK "H"?
(IC501 pin 105)
YES
Go to "FOCUS Servo is unstable"
NO
D
NO
Replace IC604 (EL2245)
NO
Check the cold soldering for
the IC601 pin 63, 64.
If it's OK, replace IC601 (AK8563)
NO
Check the cold soldering for
the IC202 pin 81, R203, C272.
NO
Laser Power Output = 1.0 mW ?
YES
Check the connection of Pick-up.
Connector and the open of FFC.
If it's OK, replace Pick-up.
NO Check the cold soldering
for the IC501 pin 141, 105. If it's OK,
replace IC501 (CXD3011R-1)
NO
Go to "Laser is abnormal"
Go to <Picture 2>
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