Read Sharp AL-1611 (serv.man12) Service Manual online
AL-1611/AL-1622
TROUBLE CODE LIST
10 – 4
F9
81
Check and
remedy
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.
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
82
Content
Printer PWB communication trouble
(Overrun)
(Overrun)
Details
Communication trouble between MCU
and printeu PWB (Overrun error)
and printeu PWB (Overrun error)
Cause
Printer PWB connector disconnection
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage. Printer PWB ROM defect,
data failure
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage. Printer PWB ROM defect,
data failure
Check and
remedy
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.
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
84
Content
Printer PWB communication trouble
(Framing)
(Framing)
Details
Communication trouble between MCU
and printer PWB (Framing error)
and printer PWB (Framing error)
Cause
Printer PWB connector disconnection
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage. Printer PWB ROM defect,
data failure
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage. Printer PWB ROM defect,
data failure
Check and
remedy
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.
the printer PWB and the MCU PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
88
Content
Printer PWB communication trouble
(Time-out)
(Time-out)
Details
Communication trouble between MCU
and printeu PWB (Time-out error)
and printeu PWB (Time-out error)
Cause
Printer PWB connector disconnection
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage.
Printer PWB ROM defect, data failure
Printer PWB MCU PWB harness failure
Printer PWB mother board connector pin
breakage.
Printer PWB ROM defect, data failure
Check and
remedy
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.
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
MCU PWB defect
Fusing section connector contact failure
Power supply failure
Fusing unit not installed
Check and
remedy
remedy
Check the harness and the connector of
the thermistor and the MCU.
Clear the self diag display with SIM 14.
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
MCU PWB defect
Fusing connector connection failure
Power supply failure
Main
code
code
Sub
code
code
Detail of trouble
H3
00
Check and
remedy
remedy
Check the heater lamp blinking with SIM
5-2.
When the lamp blinks normally:
5-2.
When the lamp blinks normally:
Check the thermistor and the harness.
Check the MCU PWB thermistor input
circuit.
Check the MCU PWB thermistor input
circuit.
When the lamp lights up instead of blink-
ing:
Check the lamp control circuit of the
power supply PWB and the MCU PWB.
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 dur-
ing printing, or when it falls under 100°C
during pre-heating.
155°C within 55 sec after turning on the
power, or when it falls under 145°C dur-
ing 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
Heater lamp failure
MCU PWB failure
Thermostat failure
Power supply failure
Interlock switch failure
Check and
remedy
remedy
Check blinking of the heater lamp with
SIM 5-2.
SIM 5-2.
When the lamp blinks normally:
Check the thermistor and the harness.
Check the MCU PWB thermistor input
circuit.
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.
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 posi-
tion shift is performed.
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 posi-
tion shift is performed.
Cause
Mirror unit defect
Mirror home position sensor defect
MCU PWB defect Scanner wire discon-
nection
Mirror home position sensor defect
MCU PWB defect Scanner wire discon-
nection
Check and
remedy
remedy
Check the scanning operation with SIM
1-1.
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 ini-
tial 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 return-
ing is completed for the specified time
(about 6 sec) after copy return start.
not turn on though the mirror base
returning is completed during mirror ini-
tial 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 return-
ing is completed for the specified time
(about 6 sec) after copy return start.
Main
code
code
Sub
code
code
Detail of trouble
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