Ricoh infotec 3671F Service Manual page 12

July 24th, 1996
3. Sensors
No. Name
Thermostat
11
Thermistor
12
13 Toner End Sensor
Registration Sensor
10
14 Paper Exit Sensor
16 Paper End Sensor
Synchronization Detector
27
4. Others
No. Name
Contact Image Sensor
15
Document Pick-up
17
Solenoid
Paper Pick-up Solenoid
19
25 Fusing Lamp
Speaker
24
Interlock Switch
26
OVERALL MACHINE INFORMATION
Description
Cuts off the ac power supply to the fusing lamp if the
surface temperature exceeds 180°C.
Is used to monitor the hot roller surface temparature.
Is used to detect the toner end condition.
Is used to detect when paper is fed into the printer.
Is used to detect when paper is at the fusing unit.
Is used to detect when the paper tray is empty.
Is used to synchronize the laser main scan.
Description
Reads and converts the light reflected from the
document into an analog video signal.
An LED array which illuminates the document is
included.
When this is energized, tx motor drive is transmitted to
the document pick-up roller.
When this is energized, main motor drive is transmitted
to the paper pick-up roller.
The heat from this lamp fuses the toner to the paper.
Allows the user to listen to the condition of the machine
and the telephone line.
If the top cover is open, this switch cuts off the
+24V(SW) power supply. This component is also used
as a top cover open sensor.
1-9
COMPONENT LAYOUT