Read Sony CMT-X3CD (serv.man2) Service Manual online
CMT-X3CD
20
1. Operation Check Flow
SECTION 5
TROUBLESHOOTING
Power is turned on.
Check if the voltage at pin 1 and 2 of
CON502 on the PW board is +13 V.
CON502 on the PW board is +13 V.
Replace the FV board, and check if the
power is turned on again.
power is turned on again.
NG
OK
Check if the USB
playback function
is OK.
playback function
is OK.
OK
OK
NG
Replace the PW board.
NG
Replace the MA board. (See Note)
Check the three wire and FFC of the loader
(connected to the XP4, XP3 and XP5 on the
MA board).
(connected to the XP4, XP3 and XP5 on the
MA board).
Check if the CD
playback function
is OK.
playback function
is OK.
OK
Check if the FM
function is OK.
function is OK.
OK
NG
NG
Replace the WIRE ASSY OPU, FFC ASSY
OPU and LOADER (T33DS) ASSY.
OPU and LOADER (T33DS) ASSY.
Check if the RF signal at TP27 on the MA
board is OK.
board is OK.
OK
Check if the wire to XP8 on the MA board
is inserted.
is inserted.
NG
NG
Insert the wire to XP8 on the MA board.
Replace the MA board. (See Note)
Replace the IN board.
OK
Replace the MA board. (See Note)
OK
NG
Replace the LOADER (T33DS) ASSY and
OPU ASSY (S76RFS7GP).
OPU ASSY (S76RFS7GP).
NG
NG
Replace the MA board. (See Note)
– Continued the
page 21 –
Note: When replacing the MA board, be sure replace both the MA
board and the NFC module at the same time. The MA board or
the NFC module cannot replace with single.
the NFC module cannot replace with single.
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