Troubleshooting - Sony SA-WX9000F Service Manual

SA-WX9000F/WXF9000
1. ON/STANDBY indicator fl ashes in red (PROTECT)
ON/STANDBY indicator flashes in
red.
(PROTECT)
Yes
ON/STANDBY indicator remains
flashing in red, when removing the
subwoofer connection connector
(CN8103) on the SK1 SUB MAIN
board and turning the power on.
Yes
IC8104 on the SK1 SUB MAIN
board is burned out.
Yes
Replace the IC8104 on the SK1
SUB MAIN board.
14
SECTION 3

TROUBLESHOOTING

Check the subwoofer cable.
No
Check and replace the subwoofer
(SP1).
Resistor (R8129, R8130) on the
No
SK1 SUB MAIN board conduct the
electricity.
Yes
The voltage of the following is 12 V.
SK1 SUB MAIN board: IC8001 pin 4
Yes
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
Replace the SK1 SUB MAIN board.
Replace the SK1 SUB MAIN board.
No
(IC8001 on the SK1 SUB MAIN board might
have been damaged)