Energy Save Function Control - Canon GP160DF Service Manual

C.

Energy save function control

1. Overview
This unit is equipped with an Energy Save function (referred to hereafter as ESS),
which serves to reduce the energy consumption while the unit is in standby mode.
When the main unit has been in stand-by mode for the specified length of time, it
switches over to the ESS function.
The settings for the activation times of the ESS function and the settings for the
stand-by time can be registered in the user mode.
Stand-by time: from 3 to 30 minutes (factory setting: 3 minutes)
2. Control
The ESS is controlled by the image processor PCB.
The main unit stays in the stand-by mode until the ESS activation time specified in
the user mode has elapsed. Then, the ESS control signal is emitted by the ESS con-
troller assembly, which is located on the image processor PCB.
The DC controller PCB, the control panel and the electrical loads are controlled by
this signal.
Power consumption during stand-by mode
Normal stand-by mode:
When the ESS is activated: approximately 14W
Image
processor
PCB
ESS
controller
assembly
IC
IC
COPYRIGHT © 1999 CANON INC.
20W ± 10%
DC power supply PCB
DC power supply
ESS
DC
control signal
controller
PCB
DC power
supply
ADF relay
ESS
PCB
controller signal
DC power
supply
IC
Control
ESS
panel
controller signal
IC
Figure 9-202
CANON GP160 REV.0 FEB. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 9 EXTERNAL/AUXILIARY MECHANISM
DC power supply
Cassette feeder
DC power
supply
and
each electrical
load
DC power
supply
Electrical loads
9-5