Power Distribution; Distribution Diagram - Ricoh Aficio FX10 Service Manual

OVERALL MACHINE INFORMATION

POWER DISTRIBUTION

1.6. POWER DISTRIBUTION

1.6.1. Distribution Diagram

AC
Main
Power
Main Switch
AC Switching
Circuit
24VIN
Fusing Lamp
ON/OFF
Switching
Circuit
Fusing Lamp
The PSU supplies +24V dc power to the FCU. The FCU converts the +24V
dc power supply to the following supplies.
+5V This is normally on when the main switch is on.
+24VPP This is used for the power pack.
+5VT This is used for the thermistor.
This supplies the laser diode. It is interrupted if the fusing unit cover interlock
+5VLD
switch opens.
+5VVL This is a more stable power supply than +5V. It is used for the image sensor.
This supplies the DRAM and the page memory card on the FCU to back up the
+5VD stored data for one hour, if the power is switched off and some data is stored in
them. A rechargeable lithium battery is used to generate +5VD.
This supplies the system RAM on the FCU to back up the programmed data, if
+5VBAT the power is switched off. A lithium battery is used to generate +5VBAT.
(Europe and Asia only)
+24V This is normally on when the main switch is on.
+24VD This is interrupted if the fusing unit cover interlock switch opens.
This supplies +24V to the fusing unit on/off switching circuit. It is interrupted if
+24VIN
the fusing unit cover interlock switch opens.
+24VM This is used for the motors.(ADF, Book Scanner, Paper Feed)
-5VCIS This is used for the image sensor.
+5VP This is used for the IC card.
IC Optional
Card Cassette
DC-DC
Converter
PSU
DC-DC
+24V
Converter
24VM
24VD
+5V
Interlock
Switch
Optional Main Motor
RS422C I/F Polygon Motor
FCU
-5V -5VCIS
+5V
+5V
DC-DC
Converter
+5VVL
+5VLD
Image Sensor
LDDR N C U
Xenon Lamp
1-20
June 10th, 1997
+24VM Paper Feed
Motor
+24VD
Ozone Fan
+24PP
Power Pack
+5VT
Thermistor
+5V
Sensors
+5V
Operation Panel
+24VM
+5V
Book Scanner
+24VM
+5V
A D F
+24V
Toner End
Sensor
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