Panasonic SC-HTB488EB

20
7.2 Active Subwoofer (SB-HWA488)
7.2.1 No power
7.2.2 No sound
No power
LED no light
up
OK
Check output at
25.4V
[Refer to check
point ①]
Check the cable is
connected correctly
(Main XP4 to Power
XP1)
OK
Connect the AC
mains lead
3.3V At “STB_3V3”
[Refer to check
point ②]
OK
Check the cable is
connected correctly
(Main XP5 to LED
XP6)
OK
Change
Subwoofer
Box Unit
Change
Power PCB
NG
NG
Change
Power PCB
NG
Change Main PCB
NG
Change Subwoofer
Box Unit
No sound
Press the power button
on the unit to turn on
the main unit and
active subwoofer
The main unit and active
subwoofer Pairing success
s success
Input audio signal Sound can be heard.
NG
Change
Main PCB
active subwoofer
.
No power
LED no light
up
OK
Check output at
25.4V
[Refer to check
point ①]
Check the cable is
connected correctly
(Main XP4 to Power
XP1)
OK
Connect the AC
mains lead
3.3V At “STB_3V3”
[Refer to check
point ②]
OK
Check the cable is
connected correctly
(Main XP5 to LED
XP6)
OK
Change
Subwoofer
Box Unit
Change
Power PCB
NG
NG
Change
Power PCB
NG
Change Main PCB
NG
Change Subwoofer
Box Unit
No sound
Press the power button
on the unit to turn on
the main unit and
active subwoofer
The main unit and active
subwoofer Pairing success
s success
Input audio signal Sound can be heard.
NG
Change
Main PCB
active
subwoofer
.
7.2.3. Check Points
POWER P.C.B.
1
25.4V