Power Distribution; Distribution Diagram - Aficio 5000L Service Manual

November 29, 1999

1.4 POWER DISTRIBUTION

1.4.1 DISTRIBUTION DIAGRAM

+24VE SG3/G4
NCU
Unit
AC
Main
Power
P S U
Main Switch
+5VE
-12VE
AC Switching
Circuit
+24VE
+24V
Fusing Lamp
+24VM
ON/OFF
Switching
Circuit
AC115V or
230V
Interlock Switch
Fusing Lamp
The PSU supplies +24V, -12V and +5V dc power to the FCU. The FCU controls
fusing lamp AC power supply
Item
+24V This is interrupted when the machine is in Level 2 energy saver mode (low power
standby).
+24VE Normally supplied by the PSU when the main switch is on.
Activated when the CPU detects an activation signal from the OPIF board, NCU or
Printer unit when the machine is in energy saver mode.
+24VM This is interrupted if the interlock switch opens.
+24VMM For the scanner, paper feed, and main motors.
+24VPP For the power pack.
+12V For the SG3 and SiG4 board though the OPIF board.
+12VP For the function upgrade card and FOD card.
+12VSBU For the SBU.
-12VE Normally supplied by the PSU when the main switch is on.
-12V For the SG3 and SiG4 board though the OPIF board.
-12VOP For the operation panel.
+5VE Normally supplied by the PSU when the main switch is on.
Activated when the CPU detects an activation signal from the OPIF board,
document feeder, or operation panel when the machine is in energy saver mode.
Paper Feed
NIC Fax
PC Fax
Unit
Expander Unit
Paper Feed
OPIF
Unit
+12V
Regulator
+5VLD
+24VM
Regulator
Scanner Motor
LDDR
Paper Feed Motor
1-15
POWER DISTRIBUTION
FOD/
2M/4M Function
Upgrade
Memory
JBIG
Card
Card
Lamp Stabilizer
Stamp
SBU
Clutches
Main Motor
Fan Motor
Polygon Motor
Description
N C U
Printer Unit
+24VE
Printer
FCU
Interface
+5VE
+5V
Controller
NIB
+5VOP
+5VE
Operation Panel
-12VOP
+24VPP
Power Pack
+5V
Sensors
: Option
H306V506.WMF