Canon iR5000 Service Manual page 190

CHAPTER 2 SEQUENCE OF OPERATIONS
1.5.3 Inputs to the DC Controller PCB
• Inputs to the DC Controller PCB (7/7)
MSW3
Fixing/feeding
N.O.
lock sensor
Developing
TS1
assembly
toner sensor
Hopper toner
TS2
sensor
TH1
Fixing main
thermistor
Fixing sub
TH2
thermistor
VS1
Potential
sensor
J8492
-1
-2
-3
Environment
HUM1
-4
sensor
-5
J2701
-4
-3
BD PCB
BD
-2
-1
2-14 P
J252
J271
J283
-11
-11 -3
-1 -3
-13
-13 -1
-3 -1
Fixing/feeding relay PCB
J162
-1 -3
-2 -2
-3 -1
J156
-1 -3
-2 -2
-3 -1
J265
J253
J282
-1 -3
-6 -5 -B6
-3 -1 -8 -3 -B8
J267
-B9
-1 -2 -9 -2
-B10
-2 -1 -10 -1
Fixing/feeding relay PCB
Potential
measurement
PCB
-A11
-A10
F02-105-08 Inputs to the DC Controller PCB
COPYRIGHT © 2000 CANON INC.
J251
J281
-3
-A12 -A9
-14
-A1 -A20
J153
-5 -3
-6 -2
-7 -1
J251
J287
-B7 -B14
-14
-13 -B8 -B13
-12
-B9 -B12
-11
-B10 -B11
J801
-A5
-A6
-A7
-A9
-A8
-A8
-A9
-A7
J401
-4
-1
-3
-2
-2
-3
-4
2000 2000 2000 2000
DC controller PCB
+12V
J106
-A12
-A1
FFUS*
When the fixing/feeding
unit is set, '0'.
+5V
J103
-A7
-A8
DTEP When the toner drops
-A9
below a specific
volume, '0'.
+5V
J103
-B9
-B10
TEP When the toner drops
-B11
below a specific
volume, '0'.
J106
-B7
TH1
When the temperature of
the fixing roller increases,
the voltage decreases.
-B8
(analog signal)
J106
-B9
TH2
When the temperature of
the fixing roller increases,
the voltage decreases.
-B10
(analog signal)
+24V
J103
-B1
When potential control
-B2
POTON
is being executed, '1'.
-B3
POT
Analog correction to
-B4
suit the drum surface
potential. (See p. 4-5P.)
+5V
J113
When the humidity
-A11
inside the machine
-A10
HUM OUT
increases, the voltage
-A9
decreases. (analog signal)
-A8
TH
-A7
When the temperature
inside the machine
increases, the voltage
+5V
decreases. (analog signal)
J120
-1
-2
When the laser beam
BD*
-3
is detected, '0'.
CANON iR5000/iR6000 REV.0 JULY 2000