Pioneer BDP-LX55 - Troubleshooting Audio Output and Remote Control

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 supply
(U5:13pin and 18pin=5.0V)
Check whether the
audio signal is right from the
U5: 10pin, 11pin, 20pin and 21pin
Check if the
R18, R46, R24 and R27 is on
Add R18, R46, R24 and R27
No audio output
Replace U5
Yes
No
No
Yes
No
Remote control
does not work
Replace the battery for remote
controller
Check whether
the remote controller’s battery is
exhausted or not.
Check the IR1 (HT68F50)
power supply is OK,
IR1 (PIN3) is about 3V
Check the VCC net on
Replace IR1
Yes
Yes
Yes
No
FRONT BOARD ASSY