AR-6020V TROUBLESHOOTING 7 – 3
1
F2-70
Improper toner cartridge detection
F2-74
Toner cartridge communication
error
F3-12
<26/31 CPM only> Paper feed tray 1
lift operation trouble
F3-22
Paper feed tray 2 lift operation trou-
ble
F3-32
Paper feed tray 3 lift operation trou-
ble
F3-42
Paper feed tray 4 lift operation trou-
ble
H2-00
Thermistor open trouble (Main)
H2-01
Thermistor open trouble (Sub)
H3-00
Fusing section high temperature
trouble (Main)
Detail
MCU
Cause
An improper toner cartridge is inserted. (The main
unit detects a toner cartridge of a different
specification.)
Toner cartridge trouble.
MCU PWB trouble.
Check & Remedy
Replace the toner cartridge.
Replace the MCU PWB.
Detail
MCU
Cause
Developing unit disconnection
MCU PWB abnormality
Check & Remedy
Replace the toner cartridge.
Check installation of the developing unit.
Use SIM16 to cancel.
Replace the MCU PWB.
Detail
MCU
Cause
C1LUD sensor trouble.
Paper feed tray 1 lift up motor trouble.
Connection trouble of the connector and the harness
and the MCU PWB and lift up unit and paper feed
unit.
Check & Remedy
Check connection of the harness and the connector
of C1LUD.
Replace the lift-up unit.
Replace the MCU PWB.
Detail
MCU
Cause
C2LUM does not turn ON within the specified time.
C2LUM sensor trouble.
Paper feed tray 2 lift unit trouble.
MCU PWB trouble.
Sensor harness and connector connection trouble
Check & Remedy
Check the harness and the connector of C2LUD.
Replace the lift-up unit.
Replace the MCU PWB.
Detail
MCU
Cause
C3LUM does not turn ON within the specified time.
C3LUM sensor trouble.
Paper feed tray 3 lift unit trouble.
MCU PWB trouble.
Sensor harness and connector connection trouble
Check & Remedy
Check the harness and the connector of C3LUM.
Replace the lift-up unit.
Replace the MCUPWB.
Detail
MCU
Cause
C4LUM does not turn ON within the specified time.
C4LUM sensor trouble.
Paper feed tray 4 lift unit trouble.
MCU PWB trouble.
Sensor harness and connector connection trouble
Check & Remedy
Check the harness and the connector of C4LUM.
Replace the lift-up unit.
Replace the MCU PWB.
Detail
MCU
Cause
Main thermistor trouble
MCU PWB trouble
Thermistor connector and harness connection trouble
Fusing section connector connection trouble
Fusing unit not installed
Check & Remedy
Use SIM44-14 to check the state of the thermistor.
Replace the thermistor.
Replace the MCU PWB.
Check connection of the thermistor connector and the
harness.
Check the connector in the fusing section.
Detail
MCU
Cause
Sub thermistor trouble
MCU PWB trouble
Thermistor connector and harness connection trouble
Fusing section connector connection trouble
Fusing unit not installed
Check & Remedy
Use SIM 5-02 to check the heater lamp blinking
operation.
When normally lighting.
Check the sub thermistor and its harness.
Check the sub thermistor input circuit on the MCU
PWB.
When not normally lighting.
Check connection of the thermistor connector and the
harness.
Check the lamp control circuit on the MCU PWB.
Cancel the trouble with SIM 14.
Detail
MCU
Cause
The fusing temperature exceeds the specified level.
Main thermistor trouble
MCU PWB trouble
Thermistor connector and harness connection trouble
Power unit trouble.
Check & Remedy
Use SIM 5-02 to check the heater lamp blinking
operation.
When normally lighting.
Check the sub thermistor and its harness.
Check the sub thermistor input circuit on the MCU
PWB.
When not normally lighting.
Check the lamp control circuit on the MCU PWB.
Cancel the trouble with SIM 14.
1
: ‘19/Oct.