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5. HDMI ARC cannot work
Check the voltage.
MAIN PCB
[U17: SYS_3V3, U6: STB_3V3]
NG
Replace the MAIN PCB
6. OPTICAL cannot work
Check the cable and connection.
AUX OPT PCB to MAIN PCB
[XP23-XP22 : 8pin FFC]
OK
Replace the AUX OPT PCB
NG
Check the voltage.
MAIN PCB [STB_3V3]
NG
Replace the [U6]
OK
Replace [U17 or U6].
NG
Replace the FFC.
OK
Replace the MAIN PCB.
7. SUBWOOFER cannot work
Check the LED
LED601
Lit?
OK
Check the voltage.
POWER PCB
[M1 : STB_3V3]
NG
Replace the POWER PCB
8. SUBWOOFER is interrupted
Remove the AC plug and then reinsert it. (SUB-
WOOFER)
NG
Check the cable and connection.
MAIN PCB [CON2]
OK
Check the voltage.
POWER PCB (SUBWOOFER)
[M1: STB_3V3]
OK
Replace the MAIN PCB.
38
NG
Check the power supply.
POWER_18V
OK
Reconnect the SUBWOOFER
OK
Replace the [M1].
OK
Reinsert the AC plug.(SUBWOOFER)
NG
Reinsert or replace the Wireless antenna.
NG
Replace the POWER PCB (SUBWOOFER).
NG
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