19
BDP-LX55
5
6
7
8
5
6
7
8
A
B
C
D
E
F
2) No audio output
3) Remote control does not work
Yes
Check the U5 power s
u
pply
(U5:1
3
pin
a
nd 1
8
pin=5.0V)
Check whether the
au
dio sign
a
l is right from the
U5: 10pin, 11pin, 20pin
a
nd 21pin
Check if the
R1
8
, R46, R24
a
nd R27 is on
Add R1
8
, R46, R24
a
nd R27
No
au
dio o
u
tp
u
t
Repl
a
ce U5
Yes
No
No
Yes
No
Remote control
does not work
Repl
a
ce the b
a
ttery for remote
controller
Check whether
the remote controller’s b
a
ttery is
exh
au
sted or not.
Check the IR1 (HT6
8
F50)
power s
u
pply is OK,
IR1 (PIN
3
) is
a
bo
u
t
3
V
Check the VCC net on
Repl
a
ce IR1
Yes
Yes
Yes
No
FRONT BOARD ASSY
