Motors, Solenoids, Switches; Sensors, Thermistor, Thermostat - Sharp Z-21 Service Manual

2. Motors, solenoids, switches

1
Circuit
Name diagram
code
1
Drive motor MM
Toner
2
supply THS
solenoid
PS RRS-A
3
solenoid RRS-B
PFS
Paper feed
4
(Paper
solenoid
Feed)
Interlock
5
—
switch
Power
6
MSW
switch
7
Power inlet Inlet
3
6
5
2
4
Type Function
DC motor Drives all loads.
Toner supply is
Solenoid performed when the
solenoid is on.
When the solenoid is
on, the paper which is
Solenoid resisted at the paper
gate (Resist roller) is
fed
Used only in the Z-26.
When the solenoid is
SOlenoid
on, the paper takeup
roller is driven.
By opening the bottom
cover or remove the
TD cartridge, the
—
interlock switch
functions to stop the
power supply.
— —
AC cord connecting
—
terminal

3. Sensors, thermistor, thermostat

2
7
7
Name
Paper feed PID (Paper
1
sensor in detector)
POD
Paper exit
2
(Paper out
sensor
detector)
TPS
Document
(Table
3
table
position
sensor
sensor)
AESP
(Auto
4
AE sensor
exposure
sensor)
MREP
Motor (Motor
5
encoder rotary
sensor encoder
port)
HLTH
6
Thermistor (Heat roller
thermistor)
7
Thermostat
– 8 –
5
6
4
Circuit
diagram Type
code
Senses paper
Photo sensor
entry.
Photo sensor Senses paper exit.
Senses the
Photo sensor document table
position.
Reads the
Photo sensor
document density.
Reads the encoder
Photo sensor
pulse.
Senses the fusing
Thermistor
temperature.
When the fusing
temperature rises
abnormally, the
thermostat opens
— Thermostat to stop power
supply to the
heater lamp.
(165°C type
employed.)
3
1
Function