Mirror Heater, Cassette/Drum Heater, And Accessory Cassette Heater; Adf And Sorter - Canon NP7160 Service Manual

CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS

3. Mirror Heater, Cassette/Drum Heater, and Accessory Cassette Heater

The following three heaters are made available as accessories to the copier, designed to
prevent condensation of the scanner and the drum and to keep paper inside the cassette dry.
Table 7-201 shows the function of each heater. Figure 7-202 shows the timing at which each
heater turns on.
Notation Name
H2
Mirror heater
H3
Cassette/Drum heater
H4
Accessory cassette heater
Sequence
Mirror heater (H2)
Cassette/Drum heater (H3)
Accessory Cassette heater (H4)
Each heater is supplied with power when the copier's power switch is turned off. The mirror
heater and the cassette/drum heater and the accessory cassette heater may be deprived of power
by turning off the heater switch (SW1).

4. ADF and Sorter

For the ADF and the sorter, the copier's power supply PCB supplies AC power to the
accessory power supply PCB, which generates DC power.
7–6
COPYRIGHT © 1998 CANON INC.
Table 7-201
Power switch Start key
ON
WMUP WMUPR STBY
Figure 7-202
CANON NP7160/NP7161 REV.0 AUG. 1998 PRINTED IN JAPAN (IMPRIME AU JAPON)
Function
Prevents condensation on the scanner.
Prevents condensation on the drum and keeps copy paper dry.
Keeps copy paper dry.
ON
INTR SCFW
Power switch
OFF
SCRV LSTR STBY