Toshiba e-studio550 Service Manual page 152

10. 3. Charger Wire Cleaner Operational Circuit
(1) Role of the charger wire cleaner circuit
This circuit is for cleaning the main charger wire. It reciprocates the wire cleaner regulary to avoid
a poor charging and irregularities of the drum.
(2) Configuration of the chager wire cleaning circuit
• Wire cleaner drive motor
• Wire cleaner stop position switch : Detection of the wire cleaner reaching the limit (rear side)
• Control section
[Front side]
Wire cleaner
drive motor
Wire cleaner Main charger wire
Drive unit control signal
CLMTA-0
Wire cleaner
drive motor "H" level
"H" level
Stop position switch input signal
Signal
MCLSW-0 (Stop position switch)
JUNE 2002 © TOSHIBA TEC
: Driving of the wire cleaner
: Controlling of the cleaner drive unit and cleaning of the wire
Wire cleaner
stop position
switch
Signal
CLMTB-0
"L" level "L" level
"L" level
"L" level "H" level
"H" level
"H" level
Not detected Detected
[Rear side]
Control section
MCLSW-0
Motor
CLMTA-0
CLMTB-0
driver
IC9
OFF
Reverse rotation (Home position
Forward rotation (Limit
Brake
Status
"L" level
10 - 3 e-STUDIO550/650/810 PROCESS RELATED SECTION
PWA-F-LGC-340/341/342
Gate Main
array CPU
IC58
IC56
Status
limit)
Home position)