Canon CLBP-460PS, Service Manual, Page: 71 / 566

DC Controller Input/Output Signals (7/7)
Figure 2-2-9
2 - 13
CHAPTER 2
Fixing heater
safety circuit
DC controller PCB
Power switch
Power supply
SW6
Fixing unit
abnormality
detection circuit
Fixing unit
Upper
thermistor
Lower
thermistor
Lower fixing
heater
Upper fixing
heater
Upper fixing roller
surface temperature
detection
Lower fixing roller
surface temperature
detection
HU
Fixing heater
drive circuit
Relay
RL101
+24VB
Power control IC
J1012
-10
J2
-4
-11
-3
-9 -5
-8
-6
-13
-6
-5
-4
-3
-2
-1
J1011
-3
-4
-7
-8
Upper
thermoswitch
Lower
thermoswitch
PSWOFF
ACTYP
FXROF
FXENB
FXUON
/PCONT
FXSTS
FXUONS
FXLON
FXLONS
THRU
THRL
"H" when the power switch is turned OFF.
"H" when the 100V power supply is
installed.
"L" when the 200V power supply is
installed.
"L" to turn the relay OFF.
When a pulse is output, the upper/lower
fixing heater can be turned ON.
"H" to switch the power OFF.
Upper/lower fixing heater status signal
"H" to turn the upper fixing heater ON.
"H" to turn the sub drive circuit ON.
"H" to turn the lower fixing heater ON.
"H" to turn the sub drive circuit ON.
The voltage decreases as the upper
fixing roller temperature increases.
The voltage decreases as the
lower fixing roller temperature
increases.
-5
-6
FXTYP "H" when the 100V fixing unit is
installed.
"L" when the 200V fixing unit is
installed.
JP1
JP2
TPU
TPL
HL
THI Fixing unit temperature signal
J80
-2
-1
J81
-2
-1
-4
-3
-6
-1
-7
-8
-9
-10
-11
-12
-13
-1
-2
/FXSET
-4
-3
"L" when the fixing unit is installed.