Pioneer PDP-424MV Service Manual page 53

4. Remote control not effective
(1) The wired remote control is not effective.
1 When a single item is used
The wired remote control is not
effective.
Is there a signal output specified below
at Pin 7 of the RS connector?
NO
Is there a signal output specified below
at Pin 3 of the M2003? (Refer to the
PWB layout diagram on Page P4-21.)
YES
When the RS connector is
disconnected, is there a signal output
specified below at the RS connector of
the MAIN PWB?
Pin No. Pin name Voltage
1 M + 5V 5Vdc
5 M + 3.3V 3.3Vdc
YES
The 232C PWB is fault.
2 When a daisy chain (including the video wall) is used
The wired remote control is
not effective.
Are the 0Vdc and 5Vdc
outputs respectively available
at Pins 9 and 10 of the RS
connector in the standard
roduct of 232C PWB?
NO
The MAIN PWB is fault.
(Caution)
YES
The RS connector or the
MAIN PWB is fault.
3.3Vpp
Is there a 3.3Vdc output
NO
at Pin 2 of the M2003?
(Refer to the PWB layout
diagram on Page P4-21.)
5Vpp
The RS232C PWB is fault.
The RS connector or the
NO
MAIN PWB is fault.
Is there a clock signal output at
YES
Pin 3 of the M2004? (Refer to
the PWB layout diagram on
Page P8-19.)
NO
The 232C PWB is fault.
8-17
The wired remote control is not effective if the setting
of [PLE LINK], or [Repeat TIMER] is ON, or if the
setting of [ID NUMBER] has been made. Therefore,
such a setting should be turned off, without fail. Since
then, troubleshooting can be carried out.
The remote control or the
YES
remote control cable is fault.
NO
Check the products of
YES
second and thereafter
according to "1 When a
single item is used."
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