2-6-2.Second Paper Cassette Unit (Option) - Minolta QMS PageWorks/Pro 1100 Service Manual

Symbol Name
PWB-D Laser Diode Drive
Board (Inside of the
Print Head Unit)
S1 Power Switch
S2 Interlock switch
SL1 Paper Take-up Sole-
noid
TH1 Thermistor
TS1 Thermostat
2-6-2. Second Paper Cassette Unit (option)
Symbol Name
SL21 Paper Take-up Sole-
noid
SW21 Cassette Type Detect-
ing Switch
PI2 Paper Empty Sensor
(on the PWB-A)
PWB-A Connecting Board
Function
Detects the start point of printing via
the laser diode and SOS sensor, and
irradiates the P .C. Drum with the laser
beam according to the image signals.
Turns ON or OFF the printer.
Detects the opening or closing of the
Top Cover. Cuts output voltage (except
5 VDC) when the Top Cover is open.
Transmits the drive of the Main Motor
to the Paper Take-up Roller.
Detects the temperature of the Heat
Roller, measures the temperature on
the surface of the Heat Roller and
sends to the Heater control circuit.
Cuts power to the Heater Lamp (H1)
when overheating (210°C) is detected
at the Fusing Section.
Function
Controls gears and clutches to trans-
mit the drive from the Main Motor to
Paper Take-up Rollers.
The drive is transmitted when the
solenoid is turned on.
Triple push switches for detecting the
cassette type according to the paper
size.
Detects the presence of paper.
The signal is L when the paper is
detected.
Sends/receives power and control sig-
nals from the printer to/from compo-
nents in the Second Paper Cassette
Unit.
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