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