Ricoh B286, Service Manual

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Electrical Components
SM 6-91 B286/B289
Det
ails
NUMBER NAME DESCRIPTION
M3 Cutter Motor This controls the cutter in the roll feeder.
M4 Drum Motor This controls the OPC drum.
M5 Fusing Motor
This controls the hot roller, fusing exit rollers,
and upper exit rollers.
M6 Main Motor
This controls the registration roller,
development unit, and the agitator in the toner
cartridge.
M7 PCB Cooling Fan Motor 1 Cools the IPU, MCU and controller board.
M8 PCB Cooling Fan Motor 2 Cools the IPU, MCU and controller board.
M9 Roll Feed Motor
This controls the feed rollers for roll 1 and roll
2 in the roll feeder.
M10 Scanner Motor
This controls the original feed rollers and
original exit rollers.
M11 Used Toner Bottle Motor
This controls the mechanism that keeps the
level of used toner in the bottle flat.
M12 Wire Cleaner Motor
This moves the corona wire cleaner to the left
and right to clean the charge corona wire.
PCBs
PCB1
IPU (Image Processing
Unit)
This processes image data from the CIS
(Contact Image Sensor), and sends it to the
VDB (Video Drive Board) and LPH (LED Print
Heads). The IPU also controls the HDD unit
and the PC interfaces.
PCB2 MCU (Main Control Unit)
This is the machine’s main board. It contains
the SCU (Scanner Control Unit) and ECU
(Engine Control Unit). These units control all
parts of the machine, and this includes the
print engine, scanner, and image processing.