Ricoh B286 Service Manual page 606

Electrical Components
NUMBER
SW11 Exit Unit Switch
Others
CO1 Recycle Counter
Dehumidifier 1
H1
(Front/Right)
H2 Dehumidifier 2 (Front/Left)
H3 Dehumidifier 3 (Rear/Right)
H4 Dehumidifier 4 (Rear/Left)
Anti-Condensation Heater
H5
(Left)
Anti-Condensation Heater
H6
(Right)
HDD1 HDD
TH1 Hot Roller Thermistor
B286/B289
NAME
Detects whether the fusing unit cover is open
or closed. SC559 is issued after 3 consecutive
jams occur in the fusing unit.
Note: SC559 is not issued unless SP1159 is
switched on (Default: "0" off).
The fusing unit cover must always be opened
and closed after this SC occurs to restore the
machine to full operation. This ensures that
the operator has opened and closed the cover
to check for paper and/or paper scraps around
the hot roller. Loose paper around the hot
roller is a fire hazard.
A mechanical counter that measures the total
length in meters of paper that the machine
feeds. It starts from the first copy.
One of four dehumidifiers that keeps the roll
feeder drawer free of moisture.
These are below the OPC drum. They keep
the copier free of moisture, which could cause
problems with paper feed and fusing.
The CPU uses this thermistor to monitor the
temperature of the hot roller.
6-98
DESCRIPTION
SM