Canon LBP7200Cdn - Other Function; Engine Control System; Construction; Outline

Chapter 2
2-17
low pressure power, and supplies to the host machine.
2.7.1.2 Other Function
2.7.1.2.1 Protective function
0021-2057
The low-voltage power supply has a protective function against overcurrent and overvoltage to prevent failures in the power supply circuit. If there flows an over-
current or overvoltage, the low-voltage system automatically cuts off the output voltage.
If the DC voltage is not being supplied from the low-voltage power supply, turn off the power switch and unplug the AC power cord. Do not turn the power switch
on again until the root cause is found.
In addition, two fuses in the fixing power supply protect against overcurrent. If overcurrent flows into the AC line, the fuses blow and cut off the AC power.
2.7.1.2.2 Power-save mode
0021-2058
The power-save mode reduces power consumption of the printer.
When the low-voltage power supply receives the POWER SAVE (REM24V) signal from the DC controller, it stops the power supply from the +24V generation
circuit.
2.8 ENGINE CONTROL SYSTEM
2.8.1 Construction
2.8.1.1 Outline
0021-2059
The DC controller controls the operational sequence of the printer.
F-2-21
CL
M
Motor
Solenoid
Photointerrupter
Switch
Sensor
Fan
Clutch
Laser scanner
AC input
Fixing unit
High-voltage
power supply
Low-voltage
power supply
Power supply
unit
Option
Formatter
Cartridge
DC controller
ITB unit
Operation panel