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7 Troubleshooting Guide
7.1 Main Unit (SU-HTB488/494/498)
7.1.1 No power
7.1.2. Function indicator LED no light up
7.1.3. Bluetooth® Pairing failure
No power
Press the Power
button on the unit to
turn on the unit.
OK
Check output at 25.4V
[Refer to check point ①]
Check the cable is connected
correctly (Main XP417 to Power
CN3)
OK
Change
Main PCB Unit
LED no light up.
Change
Power PCB
NG
NG
)
Connect correct or change
cable
Function indicator LED no light up
Function indicator LED no light up
Press the Power button
on the nit to t rn on
Press [OPTICAL]
b tt
th
t
on the unit to turn on
the unit.
button on the remote
control.
Connect BD or DVD
device to OPT.
Sound can be heard.
OK
NG
Ch
5V At “SYS_5V”
[Refer to check point②]
or 3.3V At “STB_3V3”
[Refer to check point③]
NG
Ch
OK
Change LED PCB Unit
Still No Display
Ch
Check the FFC cable is connect
correct (Main XP9 to LED XP1)
NG
OK
Change
Main PCB Unit
Change
Main PCB Unit
Change
Main PCB Unit
Connect correct or change
FFC cable
No power
Press the Power
button on the unit to
turn on the unit.
OK
Check output at 25.4V
[Refer to check point ①]
Check the cable is connected
correctly (Main XP417 to Power
CN3)
OK
Change
Main PCB Unit
LED no light up.
Change
Power PCB
NG
NG
)
Connect correct or change
cable
Function indicator LED no light up
Function indicator LED no light up
Press the Power button
on the nit to t rn on
Press [OPTICAL]
b tt
th
t
on the unit to turn on
the unit.
button on the remote
control.
Connect BD or DVD
device to OPT.
Sound can be heard.
OK
NG
Ch
5V At “SYS_5V”
[Refer to check point②]
or 3.3V At “STB_3V3”
[Refer to check point③]
NG
Ch
OK
Change LED PCB Unit
Still No Display
Ch
Check the FFC cable is connect
correct (Main XP9 to LED XP1)
NG
OK
Change
Main PCB Unit
Change
Main PCB Unit
Change
Main PCB Unit
Connect correct or change
FFC cable
Bluetooth® Pairing failure
OK
Press the Power
Press [
]
Press and hold
OK
OK
Press the Power
button on the unit to
turn on the unit.
Press [ ]
button on the
unit to select
“BLUETOOTH”.
The bluetooth light is
quick flashing
Press and hold
[ ]
for 4sec. on the unit.
NG
NG
Change
OK
Connection of
Bluetooth® device
Sound output
No problem found
OK
OK
Go to
“No Key Function”
Change
Main PCB Unit
Bluetooth® device
(
The bluetooth LED is light
)
Sound output
No problem found
Change
LED PCB Unit
NG
Go to
“No Sound (Bluetooth®)”
NG
No Key Function
Connect the AC
mains lead
3.3 V
at “STB_3V3”
[Refer to check point ③]
OK
Change KEY PCB
Check the FFC cable is
connect correct (Main
XP9 to LED XP1)
OK
Check the cable is
connect correct
(LED&BT XP2 to KEY
XP416)
OK
Change
Main PCB Unit
NG
Change
LED PCB Unit
NG
Connect correct or
change
FFC cable
NG
Connect correct or
change cable
NG
