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ELECTRICAL COMPONENT DESCRIPTIONS
Symbol
S8
Lower Relay
S9
Registration
S10
1st Paper Lift
S11
2nd Paper Lift
S12
1st Paper Height - 1
S13
1st Paper Height - 2
S14
2nd Paper Height - 1
S150
2nd Paper Height - 2
PCBs
PCB1
Engine Board
PCB2
Printer Controller Board
PCB3
Network Interface Board
PCB4
PSU (Power Supply Unit)
PCB5
LDD (Laser Diode Driver) Controls the laser diode.
PCB6
Operation Panel
PCB7
High Voltage Supply
PCB8
Memory (Option)
Lamps
L1
Fusing Lamp
L2
Quenching Lamp
Others
TF1
Fusing Thermofuse
TH1
Fusing Thermistor
Laser Synchronization
LSD 1
Detector
Name
Detects misfeeds.
Detects misfeeds and controls registration clutch
off-on timing.
Detects when the paper in the 1st paper tray is at
the feed height.
Detects when the paper in the 2nd paper tray is
at the feed height.
Detects the amount of paper in the 1st paper
tray.
Detects the amount of paper in the 1st paper
tray.
Detects the amount of paper in the 2nd paper
tray.
Detects the amount of paper in the 2nd paper
tray.
Controls all printer engine functions.
Controls the printer functions
Network interface board
Provides dc power to the system and ac power to
the fusing lamp and heaters.
Controls the operation panel.
Supplies high voltage to the drum charge roller,
development roller, and transfer roller.
Expands memory capacity.
Heats the hot roller.
Neutralizes any charge remaining on the drum
surface after cleaning.
Opens the fusing lamp circuit if the fusing unit
overheats.
Detects the temperature of the hot roller.
Detects the laser beam at the start of the main
scan.
Function
1-10
1 October, 1999
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