Charger Wire Cleaner Control Circuit; General Description; Configuration - Toshiba e-STUDIO555 Service Manual

9.3

Charger Wire Cleaner Control Circuit

9.3.1

General description

The charger wire cleaner control circuit drives the main charger wire cleaner in a periodical
reciprocating movement to clean the main charger wire, on purpose of eliminating defective or irregular
charging over the drum.
9.3.2

Configuration

The configuration of this control circuit is shown below.
• Wire cleaner drive motor:
Drives the wire cleaner in a reciprocating movement.
• Wire cleaner position detection switch:
Detects that the wire cleaner has reached to its home position (front side) or its stop position (rear
side).
• Control section (LGC board):
Outputs the drive signal to the wire cleaner drive motor and detects the input signal from the wire
cleaner position detection switch
[Front]
Main charger / wire cleaner drive unit
Wire cleaner position
Wire cleaner
detection switch
drive motor
Wire cleaner
WCLMTA-0A
WCLMTB-0A
Drive signal of wire cleaner drive motor
(L = Low level, H = High level)
Signal
WCLMTA-0A WCLMTB-0A
L
H
L
H
Signal
MCLSW-0A Cleaner detected
(Cleaner reached to its home position or its
stop position)
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[Rear]
LGC board
Main charger wire
Fig. 9-2
L Off
L Forward rotation (Stop position > Home position)
H Reverse rotation (Home position > Stop position)
H Brake
Low level
9 - 3
MCLSW-0A
IC56
ASIC
WCLMTA-0
IC9
WCLMTB-0
Motor
driver
Motor Status
High level
Cleaner not detected (During cleaning)
PROCESS RELATED SECTION
IC58
Main CPU
e-STUDIO555/655/755/855
9