
SA-WX9000F/WXF9000
SA-WX9000F/WXF9000
1515
2. ON/STANDBY indicator does not light up (Power is not turned on)
ON/STANDBY indicator does not
light up.
(Power is not turned on)
The voltage of the following is about
28.5 V.
POWER board: CN902 pin 1
The voltage of the following is 3.3 V.
SK1 SUB MAIN board:
CN8101 pin 9
Yes
POWER board might have been
damaged. Replace the POWER
board.
Yes
Yes
Yes
Fuse (F901, F902) and fusible
resistor (R923) on the POWER
board conduct the electricity.
No
No Check the pattern of area surrounding connector (CN8101) on
the SK1 SUB MAIN board and UNSW3.3V line. If there is no
abnormality, replace the Bluetooth module.
The reset signal is inputted to pin 21
(AC_CUT) of connector (CN8101)
on the SK1 SUB MAIN board after
AC input.
Check the mounted state of area
surrounding IC8102 on the SK1
SUB MAIN board, and repair it.
Yes
No
No
Even if the fuse (F901, F902) on the
POWER board is replaced, it will be
damaged.
(Fusible resistor (R923) on the POWER
board is damaged, replace the POWER
board)
The voltage of the following is 3.3 V.
SK1 SUB MAIN board: IC8000 pin 1
Yes
No Check the mounted state of area surrounding IC8000 on the
SK1 SUB MAIN board do not short-circuits or opens. If there is
no abnormality, replace the SK1 SUB MAIN board.
Check the area surrounding connector (CN8101) on the SK1
SUB MAIN board. If there is no abnormality, the Bluetooth
module or SK1 SUB MAIN board are abnormality. Replace the
Bluetooth module or SK1 SUB MAIN board.
Yes
3. The sound is not outputted
The waveform of the following is normal.
SK1 SUB MAIN board:
IC8103 pin 11 (MCLK)
IC8103 pin 22 (LRCLK)
IC8103 pin 23 (SCLK)
IC8103 pin 27 (SDIN4)
Yes
The sound is outputted from the
connector (CN8103) on the SK1 SUB
MAIN board.
No
Check the area surrounding IC8103 and connector
(CN8101) on the SK1 SUB MAIN board.
Check the flexible flat cable (FFC1) (between Bluetooth
module and CN8101).
If there is no abnormality, replace the Bluetooth module
or flexible flat cable (FFC1).
Check the LC circuit of
amplifier output.
(L8102, L8103, C8136,
C8137 and C8139 on the
SK1 SUB MAIN board)
Yes
No
The sound is not outputted.
The waveform is outputted from the
IC8104 pin 35 (OUT_B), 39 (OUT_A), 40
(OUT_A) on the SK1 SUB MAIN board.
Yes
Yes
The waveform is outputted
from the IC8103 pin 48 (PWM
_M_4), pin 49 (PWM_P_4) on
the SK1 SUB MAIN board.
No The reset signal inputted to
pin 4 of IC8104 on the SK1
SUB MAIN board from pin 37
of IC8103 on the SK1 SUB
MAIN board.
No The voltage of the following is 3.3 V.
SK1 SUB MAIN board:
IC8103 pin 9, 14, 35, 50
Check the mounted state of coil (L8101) on
the SK1 SUB MAIN board, and then replace
the SK1 SUB MAIN board.
No
The waveform of the following is normal.
SK1 SUB MAIN board:
IC8103 pin 16 (RESET)
IC8103 pin 18 (PDN)
IC8103 pin 19 (MUTE)
IC8103 pin 20 (SDA)
IC8103 pin 21 (SCL)
Yes
No
Yes
Yes
Check the contact between connector
(CN8103) on the SK1 SUB MAIN board
and subwoofer cable.
Check the contact between subwoofer
(SP1) and subwoofer cable.
Yes
Check the mounted state of area surrounding
IC8103 on the SK1 SUB MAIN board do not
short-circuits or opens. If there is no
abnormality, IC8103 on the SK1 SUB MAIN
board might have been damaged. Replace
the IC8103 on the SK1 SUB MAIN board.
Check the mounted state of area surrounding
IC8104 on the SK1 SUB MAIN board do not
short-circuits or opens. If there is no
abnormality, IC8104 on the SK1 SUB MAIN
board might have been damaged. Replace
the IC8104 on the SK1 SUB MAIN board.
No
Check the area surrounding connector
(CN8101) on the SK1 SUB MAIN board.
Check the flexible flat cable (FFC1) (between
Bluetooth module and CN8101).
If there is no abnormality, replace the
Bluetooth module or flexible flat cable (FFC1).