Mitsubishi Electric PD-6130 Service Manual page 23

(2) The wireless remote control is not effective.
(Caution) Since the detection of "wired" or "wireless" is conducted for the remote control through the remote terminal,
it is necessary to pull out the remote control cable from the remote terminal, without fail. Troubleshooting
should be carried out after confirming that "IR REMOTE" is set at ON and that "ID NUMBER" is at ALL
according to the user's menu.
The wireless remote control is not
effective.
Is there a 0Vdc output at Pin 12 of the RS con-
nector?
YES
Is there a signal output specified below at Pin
6 of the PW connector?
NO
Is there a signal output specified below at Pin
1 of the LD connector?
YES
The LED connector or the LED PWB is fault.
NO
5Vp-p
YES
YES
5Vp-p
3-17
When the RS connector is disconnected, is
there a 0Vdc output at Pin 12 of the RS con-
nector in the MAIN PWB?
YES
The 232C PWB or the RS con-
nector is fault.
NO
The MAIN PWB is fault.
The PW connector or the PWR
PWB is fault.