Troubleshooting - Sony MHC-V41D Service Manual

MHC-V41D
1. Optical Pick-up Block (CMS-S76RFS7G1/S76RFS7GP) (OP1) Diagnosis Flow
Remove the top panel, turn the
power on, close the disc tray and
set in the state that optical pick-up
block can see.
The optical pick-up block moves to
the inner circumference.
(Visual check)
Yes
The spindle motor rotates.
(Visual check)
Yes
The optical pick-up block does the
focus search.
(Visual check)
Yes
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38
SECTION 5

TROUBLESHOOTING

No
The voltage of the following is 3.3 V.
MOTHER board: JL049
Yes
The SL+/SL signal is outputted to the
CN402 pin 4 (SL+), pin 3 (SL ) on the
MOTHER board.
Yes
Replace the optical pick-up block because
sled motor has the problem.
The SP+/SP signal is outputted to the
No
CN402 pin 2 (SP+), pin 1 (SP ) on the
MOTHER board.
Yes
Replace the optical pick-up block because
spindle motor has the problem.
The FCS+/FCS signal is outputted to the
No
CN302 pin 23 (FCS+), pin 24 (FCS ) on
the MOTHER board.
Yes
Replace the optical pick-up block because
optical pick-up block has the problem.
No
The voltage of the following is 3.3 V.
MOTHER board: JL071 (IC009: pin 14)
Check the circuit of area surrounding
IC401 pin 17 (VOLD+), pin 18 (VOLD )
No
on the MOTHER board.
Check the circuit of area surrounding
IC301 pin 13 (FMO) on the MOTHER
board.
Check the circuit of area surrounding
IC401 pin 11 (VOSL+), pin 12 (VOSL )
No
on the MOTHER board.
Check the circuit of area surrounding
IC301 pin 12 (DMO) on the MOTHER
board.
Check the circuit of area surrounding
IC401 pin 14 (VOFC+), pin 13 (VOFC )
No
on the MOTHER board.
Check the circuit of area surrounding
IC301 pin 17 (FOO) on the MOTHER
board.