Electrical Component Descriptions - Gestetner A193 Service Manual

Index
Symbol
No.
PCU
S6 10
S7 29 Fusing Exit
Charge Roller H.P
S8 9
Upper Tray Paper
S9 14
End
Lower Tray Paper
S10 15
End
By-pass Feed Paper
S11 16
End
Registration
S12 12
By-pass Feed Paper
S13 11
Width
S14 59 Humidity
Original Width
S15 4
Original Length-1
S16 5
Original Length-2
S17 6
Platen Cover
S18 3
Scanner H.P.
S19 1
Toner Density (TD)
S20 23
Switches
SW1 21 AC
SW2 32 Main
SW3 13 Right Vertical Guide
Upper Paper Size
SW4 20
Lower Paper Size
SW5 19
Front Door Safety
SW6 26
Magnetic Clutches
Charge Roller Contact Controls the touch and release movement of
MC1 46
MC2 42 Upper Relay
MC3 43 Lower Relay
SM

ELECTRICAL COMPONENT DESCRIPTIONS

Description
Detects when a new PCU (Photo Contuctor
Unit) is installed.
Detects misfeeds in the fuser unit.
Informs the CPU when the drum charge
roller is in home position.
Informs the CPU when the upper paper tray
is out of paper.
Informs the CPU when the lower paper tray
runs out of paper.
Informs the CPU when there is no paper in
the by-pass tray.
Detects the leading edge of the copy paper
to determine the stop timing of the paper
feed clutch, and detects misfeeds.
Detects the width of the paper in the by-pass
feed table.
Monitors the humidity around the PCU.
Detects the width of the original. This is one
of the APS (Auto Paper Select) sensors.
Detects the length of the original. This is one
of the APS (Auto Paper Select) sensors.
Detects the length of the original. This is one
of the APS (Auto Paper Select) sensors.
Informs the CPU when the platen cover is up
(related to APS/ARE functions). ARE: Auto
Reduce and Enlarge
Informs the CPU when the 1st and 2nd
scanners are at the home position.
Detects the amount of toner inside the
development unit. (PCU)
Supplies power to the copier.
Supplies power to operate the machine.
Cuts the +5 and +24 Vdc power lines.
Identifies the size of paper is in the upper
paper tray.
Identifies the size of paper is in the lower
paper tray.
Cuts the +5VLD and +24V dc power lines
and detects whether the front cover is open
or not.
the drum charge roller.
Drives the upper relay rollers.
Drives the lower relay rollers.
1-9
Note
(A193)