Main
code
Sub
code
Detail of trouble
F9
88
Cause
Printer PWB connector
disconnection
Printer PWB MCU PWB harness
failure
Printer PWB mother board
connector pin breakage.
Printer PWB ROM defect,data
failure
Check and
remedy
Check the connectors and harness
of the printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the printer
PWB.
H2
00
Content
Thermistor open detection
Detail
Fusing thermistor open
Cause
Thermistor defect
MCU PWB defect
Fusing section connector contact
failure
Power supply failure
Fusing unit not installed
Check and
remedy
Check the harness and the
connector of the thermistor and
the MCU.
Clear the self diag display with
SIM 14.
H3
00
Content
Heat roller abnormally high
temperature
Detail
Fusing temperature of 220
∼
240˚C.
Cause
Thermistor defect
MCU PWB defect
Fusing connector connection failure
Power supply failure
Check and
remedy
Check the heater lamp blinking
with SIM 5-2.
When the lamp blinks normally:
Check the thermistor and the
harness. Check the MCU PWB
thermistor input circuit.
When the lamp lights up instead
of blinking:
Check the lamp control circuit of
the power supply PWB and the
MCU PWB.
Clear the trouble with SIM 14.
H4
00
Content
Heat roller abnormally low
temperature
Detail
When the temperature does not
reach 155˚C within 55 sec after
turning on the power, or when it
falls under 145˚C during printing,
or when it falls under 100˚C
during pre-heating.
Cause
Thermistor failure
Heater lamp failure
MCU PWB failure
Thermostat failure
Power supply failure
Interlock switch failure
Main
code
Sub
code
Detail of trouble
H4
00
Check and
remedy
Check blinking of the heater lamp
with SIM 5-2.
When the lamp blinks normally:
Check the thermistor and the
harness.
Check the MCU PWB thermistor
input circuit.
When the lamp does not light:
Check for heater lamp
disconnection or thermostat
disconnection.
Check the interlock switch.
Check the power supply PWB
and MCU PWB lamp control
circuit.
Clear the trouble with SIM 14.
L1
00
Content
Mirror base feed trouble
Detail
The mirror home position (MHPS)
does not turn off though the feed
operation is completed during
mirror initial operation after turning
on the power.
The mirror home position (MHPS)
does not turn off during shading
operation.
The mirror home position (MHPS)
does not turn on when the mirror
base is returned for the specified
time after copy feed is started and
SPF scanning position shift is
performed.
Cause
Mirror unit defect
Mirror home position sensor defect
MCU PWB defect
Scanner wire disconnection
Check and
remedy
Check the scanning operation with
SIM 1-1.
L3
00
Content
Mirror base return trouble
Detail
The mirror home position (MHPS)
does not turn on though the mirror
base returning is completed during
mirror initial operation after turning
on the power.
The mirror home position does not
turn on when the mirror is
returned to the home position
during shading.
The mirror home position (MHPS)
does not turn on when the mirror
base returning is completed for
the specified time (about 6 sec)
after copy return start.
Cause
Mirror unit
Mirror home position sensor defect
MCU PWB defect
Scanner wire disconnection
Check and
remedy
Check the scanning operation with
SIM 1-1.
L4
01
Content
Main motor lock
Detail
The main motor encoder pulse is
not detected for 400msec.
Cause
Main motor defect
Harness disconnection between
the MCU PWB and the main
motor.
Control circuit failure
AR-162 TROUBLE CODE LIST – 6
