Panasonic SB-HWA250GA, Service Manual

Page: 14 / 36

14
7.1.4. No Key Function
7.1.5. No remote control function
7.1.6. No HDMI out
Connection of
Bluetooth® device
( The bluetooth LED is lighted )
Sound output
Bluetooth® Pairing failure
No problem found
Change
LED PCB
NG
Go to
“No Sound (Bluetooth®)”
NG
OK
OK
OK
Press the Power
button on the unit to
turn on the unit.
Press [ ]
button on the
unit to select
“BLUETOOTH”.
Go to
“No Key Function”
The bluetooth light is
quick flashing
Press and hold
[ ]
for 4sec. on the unit.
NG
NG
Change
Main PCB
OK
No Key Function
Connect the AC
mains lead
Check the Main
C117~U16 Pin 8
at “3.3V”
[Refer to check point ③]
Change
Main PCB
NG
OK
Change
Key PCB
NG
Check the cable is
connected correctly
(Main CP4 to KEY CN4)
Connect correctly or
change the cable
OK
The Bluetooth LED
is flashing
OK
Go to “Function
indicator LED no
light up”
NG
Press remote control
“Power” button to
Power ON unit
OK
Go to “No Power”
NG
3.3V at Pin 2/3/4/5/6
of Main CP4
[Refer to check point
④]
NG
Change
Main PCB
OK
3.3 V at Pin 2/3/4/5/6
of Key CN4
[Refer to check point
⑤]
NG
OK
No remote control function
Connect the AC
mains lead
Change
Main PCB
OK
No Sound (Bluetooth®)
Press the Power
button to turn on
the unit.
Connect
Bluetooth® device
Go to
“Bluetooth® Pairing failure”
Playback
No sound
NG
Yes
If the pairing failure,
Go to “Bluetooth® Pairing failure”
OK
Change
Main PCB
NG
Check the cable is
connected correctly
(Main CP4 to Key CN4)
Connect correctly or
change the cable
NG
Change IR PCB
Press Main set “Power”
button to
Power ON unit
Go to “No Power”
NG
OK
3.3 V at Pin 8 of
Main CP2
[Refer to check point ⑥]
Change
Main PCB
NG
Turn ON Mobile Phone
camera and point to
remote control IR LED
Press and hold any
remote control
button
Remote Control IR
LED flashing
OK
Change Remote
Control or battery
NG
Checking
Remote Control
Checking
Main Unit
OK
3.3 V at Pin 8 of
IR CN2
[Refer to check point ⑦]
NG
No HDMI ARC
Press the Power
button to turn on the
unit
No Sound output
No Sound (Optical)
select “HDMI(ARC)”
source and connect
TV with ARC to HDMI
Press the Power
button to turn on the
unit
No Sound
output
Select “OPTICAL”
source and connect
BD/DVD device
Change
HDMI cable
Yes
Change
Main PCB
Still
No Sound
output
Yes
Change
OPTICAL cable
Yes
Change
Main PCB
Still
No Sound
output
Yes