Epson AcuLaser C9200N Service Manual page 95

EPSON AcuLaser C9200N
2.4.2 Engine Section Parts Operated When the Main
Power Switch is Turned ON
When the Main Power Switch is turned ON, the Mechanical Control Board
detects it and sends a control signal to the DC Power Supply. This turns
ON the Sleep Relay and the DC Power Supply supplies engine section
parts with 3.3 VDC, 5 VDC, and 24 VDC. The Heater Relay is also turned
ON and the Fusing Heater Lamps are supplied with AC power.
If Sleep is activated, the Sleep Relay is turned OFF, thus shutting off power
supply to the engine section. Even when Sleep is activated, DC power
supply to the Controller Board is continued.
If print data is received with the Sleep Relay turned OFF, the relay is
turned ON by the signal provided by the Controller Board and power is
thereby supplied.
Main Power
Switch
Sleep Relay
OPERATING PRINCIPLES
Heater Relay
Front Door SW
24V
Main DC
/Right Door SW
Power Supply
3.3V Power supply to
board
Sub DC Power
Supply
Front Door SW
5V
4039T2C133AA
No Voltage
AC Power Heater Lamps
1
Supply
Fan Motors, Solenoids, Clutches, Erase Lamp, Polygon Motor, 2nd
2 DC24V
Image Transfer Pressure/Retraction Motor, MP
Main Motor, PC Motor, Developing Motor, Fusing Drive Motor, Toner
3 DC24V
Supply Motor, Duplex Option, High Voltage Unit
4 DC5V CPU, ADC, Sensors, Control Panel
5 DC5V Power supply to board
1
2
3
4
5
Other Control
Revision D
Connected Parts
95
Confidential