Canon LBP-1000 Service Manual page 40

CHAPTER 2
3. Engine controller input/output
PS504
J1708-3
Multi-purpose
tray paper
sensor
PS503
J1701-3
Delivery
sensor
Fixing unit
TH701
Thermistor
SW1701
J1703-2
Interlock
switch
2 - 6
J701-1
-1
-2
J301-3
-1
-2
J1141-1 J301-1
-2
Intermediate PCB
J1008-1 J1001-1
J401-27
-1 -3 -4
Figure 2-2-2
Engine controller PCB
+3.3V
-3
"L" when the paper is set on
/MPSNS
-2
the multi-purpose tray.
+3.3V
-5
"L" when the sensor detects
/POSNS
-4
the paper.
FSRTH As the fixing heater temperature
-2 rises, the voltage decreases.
+24V
+24VR
-24
/DOPEN
PS501
Cassette
paper
sensor
PS502
Top-of-page
sensor
SW701
Test print
switch
SW201
Power switch
"L" when the top
cover is open.
"L" when the paper is
set in the cassette.
"L" when the sensor
detects the paper.