Mitsubishi Electric PD-5010 Service Manual page 15

(3) Flashing in red (Temperature error detection)
In the cold-start mode, does it
take less than 15 seconds after
the main power circuit is turned
ON and until it is turned OFF?
YES
Disconnect the PD, PH, and
AD connectors and turn ON
the main power circuit. Does
the power supply work normally
in this state? (Are normal out-
puts of D+170V, D+64V, and
D+5V available? Is Pin 3 of
the PM connector maintained at
the [H] level? However, no pic-
tures are displayed.)
YES
The MODULE and peripheral
circuits are out of order.
NO
Is Potential 0V maintained
at Pin 29 (MAIN) of IC7001?
TH1 in the POWER unit and
peripheral circuits are out of
order.
NO
The POWER unit is out of
order.
4
NO
YES
IC7001 and peripheral
circuits are out of order.