OTHER KINDS OF CONTROL
2-P-2
2 UNIT EXPLANATION
1. Operation
If the power cord is plugged in the wall outlet, the
following parts are energized regardless of
whether SW1 (main power) is ON or OFF:
a. CBR1/2 (circuit breaker/1/2)
If an excessive current flows due to a short in an
internal part or other factors, this breaker turns
OFF to cut off the power to the machine.
b. NF (noise filter)
The noise filter is used to reduce the noise arriv-
ing through the power line.
c. DCPS (DC power supply unit)
RL2 (heater relay) is turned ON to turn ON HTR1
(heater/1), HTR2 (heater/2), and HTR3 (drum
heater (spare parts)).
d. Internal heaters
HTR1 (heater/1), HTR2 (heater/2), and HTR3
(drum heater (spare parts)) are energized in syn-
chronization with ON or OFF operation of SW1
(main power). (7155/7165)
HTRs 1 to 3 are energized by turning ON/OFF
SW3 (heater switch). (7255/7272)
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MODEL MANUAL REVISED EDITION DATE PAGE METHOD
SERVICE MANUAL Dec. 2003
7155/7165/7255/7272
2-P-1-1 ADDITION
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