Ricoh Neptune-P1 Service Manual page 444

NUMBER
SW9 Exit Unit Switch
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.
Others
CO1 Recycle Counter
H1 Dehumidifier 1 (Front/Right)
H2 Dehumidifier 2 (Front/Left)
H3 Dehumidifier 3 (Rear/Right)
H4 Dehumidifier 4 (Rear/Left)
H5 Anti-Condensation Heater (Left) These are below the OPC drum. They keep the copier
Anti-Condensation Heater
H6
(Right)
HDD1 HDD
TH1 Hot Roller Thermistor
Pressure Roller Thermistor 1
TH2
(Edge)
Pressure Roller Thermistor 2
TH3
(Center)
TS1 Thermostat 1 (Center)
TS2 Thermostat 2 (End)
NAME
Detects whether the fusing unit cover is open or closed.
SC559 is issued after 3 consecutive jams occur in the
fusing unit.
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.
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.
The CPU uses this thermistor to monitor the temperature
of the pressure roller.
199°C. This safety device prevents overheating if the
temperature control circuit fails.
200°C. This safety device prevents overheating if the
temperature control circuit fails.
Electrical Components
DESCRIPTION
6
443