Sony MHC-V41D Service Manual page 39

– From page 38 –
The laser diode emits the light.
(Visual check)
Yes
Set the test disc (YEDS-18) on the
disc tray and playback it.
Yes
The following standard value of RF
signal is outputted to the CN302
pin 17 (RF) on the MOTHER board.
RF level = 1.0 ± 0.25 Vp-p
Yes
There is no problem when
performing the playback test of long
time (60 minutes).
The sound skip does not happen.
Yes
End
It is outputted 2 V to the CN302 pin 6
No
(FE_LD_CD (780)) on the MOTHER
board.
Yes
Replace the optical pick-up block.
No
Perform the lens cleaning.
Yes
The following standard value of RF signal
is outputted to the CN302 pin 17 (RF) on
the MOTHER board.
RF level = 1.0 ± 0.25 Vp-p
Yes
No
Replace the optical pick-up block.
Check the circuit of area surrounding
Q402 on the MOTHER board.
No
Check the circuit of area surrounding
IC301 pin 9 (LDO1) on the MOTHER
board.
No
Replace the optical pick-up block.
MHC-V41D
39