Protection Function
Overview
This machine has a protection function against overcurrent and overvoltage.
Description
Low voltage power circuit carries the overcurrent preventive function and overvoltage preventive function that block the voltage
output automatically to prevent the power circuit brokerage when the overcurrent or overvoltage occur due to load errors such
as short circuit etc.
Also, as additional protective function, 2 fuses (FU101 and FU202) are installed in the circuit. FU101 is the fuse against overcurrent
in the AC line. FU202 is the fuse against overcurrent in the +24 V line.
If overcurrent occurs, the power supply fuse blows and cuts off the power supply.
CPU for the engine controller judges the door is open when the Toner Cover Switch is turned OFF.
WARNING:
As the power of this machine is turned ON/OFF by the remote switch control circuit, power is supplied to the AC line even
when the Power Switch is turned OFF. Do not perform disassembly work while the Power Supply Cord is connected to the
inlet.
Power-saving Mode
Overview
Power-saving mode is a function that reduces the printer power consumption.
Description
The power mode Types are shown below.
Power-saving Mode Status
Standby Power ON
Sleep Sleep 1 Power OFF
Power is supplied to the Main Controller
Sleep 2 Power OFF
Main Controller is in Sleep mode
2. Technology
37
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