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Symbol
Panel Display
Fusing
Upper Roller
TH1
(°C)
Unit
Lower Roller
TH2
(°C)
Thermistor Set
Devel-
UN4
ATDC-S
oping
UN6
AIDC-S
S7
Sub Hopper
Toner Bottle
PC4
Set
HV
Clean
PC16
(Charge)
PC17
Clean (Trans.)
PHC-ITI
Doors
PC8
Front (Upper)
S2
Front (Lower)
S3
Take-up
S4
Exit
S5
Turn Over
Finisher set
S1
Power Switch
Pre-drive Off
S6
(F)
Pre-drive Off
PC5
(R)
Paper
PC2
Timing Roller
Pas-
sage
PC1
Roller Front
Trans.
PC13
Entrance
Horiz. Transprt Duplex Unit Horizon-
PC12
S10
Exit
Reverse
PC11
Entrance
PC14
Reverse Exit
Duplex
PC57
Remaining
Horiz. Remain-
PC56
ing
Universal CD-
VR
VR
UN13
IR Thermistor
Operation Charac-
teristics/Panel Dis-
Parts/Signal Name
play
1
Upper Fusing Roller
Voltage value
Thermistor
(A/D converted)
Lower Fusing Roller
Voltage value
Thermistor
(A/D converted)
Thermistor Set
In position
Switch
Voltage value
ATDC Sensor
(A/D converted)
Voltage value
AIDC Sensor
(A/D converted)
Sub Hopper Toner
Toner
Empty Switch
loaded
Toner Bottle Home
At home
Position Sensor
Drum Comb Clean-
ing Home Position
At home
Sensor
Transfer/Separator
Wire Cleaning Home
At home
Position Sensor
PHC ITI signal
ON
Upper Front Door Set
When
Sensor
opened
Lower Front Door
When
Interlock Switch
opened
Right Door Interlock
When
Switch
opened
Upper Left Door
When
Interlock Switch
opened
Lower Left Door
When
Interlock Switch
opened
Finisher Set Switch
In position
Power Switch
ON
Predrive OFF Front
Closed
Switch
Predrive OFF Rear
Blocked Unblocked IC4A P223 PJ9A-11B
Sensor
Paper Leading Edge
Paper
Sensor
present
Transport Roller Sen-
Paper
sor
present
Duplex Unit Horizon-
Paper
tal Transport Entry
present
Sensor
Paper
tal Transport Sensor
present
Paper
Paper Exit Switch
present
Turnover Feed Entry
Paper
Sensor
present
Paper
Turnover/Exit Sensor
present
Turnover Feed Jam
Paper
Sensor
present
Duplex Unit Horizon-
Paper
tal Transport Jam
present
Sensor
Universal Tray Width
Voltage value
Detection Resistor
(A/D converted)
Exposure Lamp
Voltage value
Heater
(A/D converted)
T-6
IC
Port
CN/PJ
No.
No.
No.
0
IC1A ANI0 PJ3A-9B
IC1A ANI1 PJ3A-10B
Out of
IC1A P17
PJ3A-1B
position
IC1A ANI3 PJ8A-10B
IC1A ANI2 PJ10A-1B
Toner
IC5A P303 PJ8A-12B
empty
Not at
IC5A P321 PJ2A-5A
home
Not at
IC3A P154 PJ9A-14A
home
Not at
IC3A P155 PJ3A-4B
home
OFF
IC3A P121
PJ12A-29A
When
IC5A P320 PJ2A-2A
closed
When
IC5A P325 PJ6A-14A
closed
When
IC4A P247 PJ3A-13B
closed
When
IC5A P300 PJ10A-12B
closed
When
IC5A P322 PJ8A-10A
closed
Out of
IC5A P301 PJ8A-4A
position
OFF
IC5A P326 PJ6A-15A
Open
IC4A P205 PJ2A-8A
Paper not
IC4A P200 PJ3A-2B
present
Paper not
IC4A P201 PJ3A-3B
present
Paper not
IC4A P222 PJ7A-4B
present
Paper not
IC4A P221 PJ7A-3B
present
Paper not
IC5A P307 PJ2A-13A
present
Paper not
IC5A P323 PJ6A-14B
present
Paper not
IC5A P324 PJ6A-6B
present
Paper not
IC1A INTP
PJ6A-11B
present
5
Paper not
IC1A S10
PJ7A-5B
present
IC1A ANI4 PJ8A-8B
IC1A ANI5 PJ7A-10A
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Troubleshooting
