Mitsubishi Electric PD-4265 Service Manual page 32

4. Remote control is not effective.
The wireless remote control is not
effective.
Is there a 0Vdc output at Pin 12 of the
RS connector?
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?
NO
The LED connector or the LED PWB is fault.
32
When the RS connector is disconnected,
NO
is there a 0Vdc output at Pin 12 of the RS
connector in the MAIN PWB?
YES
NO
5Vp-p
YES
The MAIN PWB is fault.
YES
The PW connector is fault.
5Vp-p
PD-5065
The 232C PWB or the RS
connector is fault.