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ELECTRICAL COMPONENT DESCRIPTIONS
Symbol
S2
ADS Sensor
Upper Tray Paper
S3
End Sensor
Registration Sensor
S4
By-pass Feed Paper
S5
End Sensor
S6
Exit Sensor
Scanner Home
S7
Position Sensor
Lens Home Position
S8
Sensor
Toner Density (TD)
S9
Sensor
Lower Tray Paper
S10
End Sensor
Printed Circuit Boards
PCB1
Main Control Board
High Voltage Supply
PCB2
Board - C/G/B/T/S
AC Drive/DC Power
PCB3
Supply Board
Operation Panel
PCB4
Board
Lamps
Erase Lamp
L1
Quenching Lamp
L2
Exposure Lamp
L3
L4
Fusing Lamp
Others
Total Counter
CO1
Upper Tray Heater
H1
(Option)
Optics
H2
Anti-condensation
Heater (Option)
Name
Detects the background density of the original.
Informs the CPU when the upper paper tray
runs out of paper.
Detects the leading edge of the copy paper to
determine the stop timing of the relay roller
clutch, and detects misfeeds.
Informs the CPU when there is no paper in the
by-pass tray.
Detects misfeeds.
Informs the CPU when the 1st scanner is at
the home position.
Informs the CPU when the lens is at the home
position.
Detects the ratio of toner to carrier in the
developer.
Informs the CPU when the lower paper tray
runs out of paper.
Controls all copier functions.
Provides high voltage to the charge corona,
grid, development bias, transfer corona, and
discharge plate.
Drives the exposure lamp, fusing lamp, and
main motor. Rectifies 30 Vac and 8 Vac input
and outputs 5 Vdc and 24 Vdc.
Informs the CPU of the selected modes and
displays the situation on the panel.
Discharges the drum outside of the image
area. (Provides leading/trailing edge and side
erases.)
Neutralizes any charge remaining on the drum
surface after cleaning.
Applies high intensity light to the original for
exposure.
Provides heat to the hot roller.
Keeps track of the total number of copies
made.
Turns on when the main switch is off to keep
paper in the upper paper tray dry.
Turns on when the main switch is off to
prevent moisture from accumulating in the
optics.
Function
8
26 September 1997
Index No.
26
31
34
33
25
45
24
29
32
1
2
3
6
4
5
22
27
39
38
44
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