6. ELECTRICAL COMPONENT DESCRIPTIONS
Refer to the electrical component layout and the point-to-point diagram on the
waterproof paper in the pocket for symbols and index numbers.
Symbol Name Function Index No.
Motors
M1
Main Motor Drives all the main unit components except
for the optics unit and fans.
8
M2 Scanner Drive Motor Drives the scanners (1st and 2nd). 9
M3
Lens Motor Moves the lens position in accordance with
the selected magnification.
18
M4
4th/5th Mirror Motor Moves the 4th/5th mirror position in
accordance with the selected magnification.
16
M5
Toner Supply Motor Rotates the toner bottle to supply toner to the
development unit.
10
M6
Optics Cooling Fan
Motor
Prevents build-up of hot air in the optics
cavity.
17
M7
Exhaust Fan Motor Removes heat from around the fusing unit
and blows the ozone built up around the
charge corona unit towards the ozone filter.
7
Clutches
CL1
Tray Paper Feed
Clutch
Transfers main motor drive to the paper feed
roller.
14
CL2
By-pass Paper Feed
Clutch
Starts paper feed from the by-pass feed
table.
12
CL3 Relay Roller Clutch Drives the relay rollers for paper tray feed. 13
CL4 Registration Clutch Drives the registration rollers. 11
Switches
SW1 Main Switch Supplies power to the copier. 38
SW2
Interlock Switch Cuts all power when the front cover is
opened.
37
SW3
Tray Paper Size
Switch
Determines what size of paper is in the
paper tray.
31
SW4
Right Vertical Guide
Switch
Cuts the +24 V dc power line of the relay
roller clutch.
27
Sensors
S1
4th/5th Mirror Home
Position Sensor
Informs the CPU when the 4th/5th mirror
assembly is at the home position (full size
position).
33
S2
ADS Sensor Detects the background density of the
original.
24
Overall
Information
20 December 1996 ELECTRICAL COMPONENT DESCRIPTIONS
1-9
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