Pioneer PDP-427CMX - Page 39

PDP-427CMX
39
5678
56
7
8
C
D
F
A
B
E
The remote control unit does not work.
Failure in the U2401 of LED PWB
Failure in the MAIN PWB
YES
Is the signal shown below output from
Pin 6 of CN9010 on the MAIN PWB?
NO
5Vp-p
YES
Is the signal shown below output from
Pin 1 of CN2401 on the LED PWB?
NO
4.4Vp-p
Failure in the IC2301 of
COMM SLOT I/F PWB
Failure in the Q2302 or
Q2301 of COMM SLOT
I/F PWB
YES
Is the signal shown below output from
Pin 10 of IC2301 on the COMM SLOT I/F
PWB?
NO
4Vp-p
1V
4. Failure of a remote control unit