Ricoh FAX2000L User Manual

30 November, 1999 POWER DISTRIBUTION
1-17
Overall
Information
1.6 POWER DISTRIBUTION
1.6.1 DISTRIBUTION DIAGRAM
The PSU supplies +24V dc power to the FCU. The FCU converts the +24V into the
following supplies:
+5V Normally on when the main switch is.
+5VE Detects an activation signal from the NCU, document feeder, or operation panel
when the machine is in energy saving mode.
+5VT For the thermistor.
+5VLD
Supplies the laser diode. It is interrupted if the fusing unit cover interlock switch
opens.
+5VV This is a more stable power supply than +5V. It is used for the contact image
sensor.
+5VD Supplies back up power for the DRAM and the optional IC card on the FCU. It can
back up stored data for one hour after the power is switched off. A rechargeable
battery on the FCU generates +5VD.
+5VBAT Supplies back up power to the system RAM on the FCU to back up the
programmed data. A lithium battery generates +5VBAT.
+24V Normally on when the main switch is.
+24VD This is interrupted if the fusing unit cover interlock switch opens.
+24VIN Supplies +24V to the fusing unit on/off switching circuit. It is interrupted if the fusing
unit cover interlock switch opens.
+24VMM For the scanner, paper feed, and main motors.
+24VPP For the power pack.
-9V For the image sensor.
+5VP For the optional IC card.
Paper Feed
Motor
Power Pack
Thermistor
Sensors
Main Switch
FCU
PSU
Fusing Lamp
AC
Main
Power
AC Switching
Circuit
Interlock
Switch
LDDR Image Sensor
Operation Panel
+5VLD+5V
+5VE
+5V
DC-DC
Converter
-9V
DC-DC
Converter
24VM
24VD
24VIN
Fusing Lamp
ON/OFF
Switching
Circuit
AC115V or
230V
Scanner Motor
+5V
DC-DC
Converter
+24V
+5VP
+5V
+5VD
Paper Feed
Unit
+24VM
+5V
IC
Card
NCU
+5VLD
+24V +5V +5VEE +24VM -9VV +5VV
+24VMM
+24VM
+24VPP
+5VT
+5V
+5VOPP
+5VE
+24VMM
Fusing Fan
Toner End
Sensor
+24V
Polygon
Motor
+24VM
+12V
-9V
Main
Motor
Paper Feed
Clutch
+24VMM
+24VMS
+5V
-9V
H545V531.WMF

Ricoh FAX2000L Specifications

General

Brand	Ricoh
Model	FAX2000L
Category	Fax Machine
Language	English