Ricoh FT7060 Field Service Manual page 255

The drum temperature exceeds 60°C for more than 3 seconds.
°
Disconnect CN202
Is the drum thermistor a short circuit (CN202-B4, CN202-A1)?
Y N
|
Is the output of CN201-A16 on the main board always HIGH
(3 volts)?
Y N
|
Is the output of CN301-B15 on the dc drive board
always LOW?
Y
Replace the dc drive board.
Replace the main board.
Replace the drum thermistor.
N
|
Replace the ac drive board.
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12 July '86