AR-405 (serv.man13). AR405 Service Manual-Trouble Code List - Sharp Copying Equipment Service Manual (repair manual). Page 7

Trouble code

Description

Main 
code

Sub

code

H3

00…HL1
01…HL2

Content Too hot fusing section
Detail

The fusing temperature is over 241.5˚C
(less than 1.3-V input voltage is
detected.)

Cause

Thermister defective
Control PWB defective
Improper connection of fusing unit
connector
AC power supply defective

Check
and
remedy

Check heater lamp operation with
SIM5-2.
If lamp blinks properly:
  Check thermister and its harness.
  Check thermister input circuit of
control PWB.
If lamp lights and stays lit:
  Check lamp control circuits of AC
PWB and control PWB.
Clear the trouble with SIM14.

H4

00…HL1
01…HL2

Content Too cold fusing section
Detail

The temperature does not reach the
preset value within the specified time (3
min. in usual modes; 5 min. in curl
correction mode.) after the power relay
is turned on.

Cause

Thermister defective
Heater lamp defective
Control PWB defective
Thermostat defective
AC power supply defective
Interlock switch defective

Check
and
remedy

Check heater lamp for blinking with
SIM5-2.
If lamp blinks properly:
  Check thermister and its harness.
  Check thermister input circuit of
control PWB.
If lamp does not light:
  Check heater lamp for broken wire
and thermostat for operation.
  Check interlock switch.
  Check lamp control circuit of AC PWB
and control PWB.
Clear the trouble with SIM14.

H5

01

Content 5 continuous POD1 not-reaching JAM

detection

Detail

5 continuous POD1 not-reaching JAM
detection

Cause

Check that the fusing JAM is completely
cancelled. (Jam paper may be
remained.)
POD1 sensor trouble or improper
harness connection
Improper installation of the fusing
harness.

Check
and
remedy

Check JAM paper in the fusing section.
(Winding, etc.)
Check POD1 sensor harness. Check the
fusing unit installation.
Cancel the trouble with SIM 14.

02

Content Fusing thermistor abnormality
Detail

Fusing thermistor temperature transient
abnormality (Paper winding)

Cause

Paper winding to fusing roller
Fusing pawl abnormality
Fusing unit installation abnormality

Check
and
remedy

Check for jam (winding) paper in the
fusing section.
Check for installation of the fusing unit.
Check the fusing pawl.
Cancel the trouble with SIM 14.

Trouble code

Description

Main 
code

Sub

code

L1

00

Content Scanner field trouble
Detail

Scanner field is not finished within the
specified time. (timer is change by
magnification)

Cause

Mirror unit defective
Scanner wire disconnected

Check
and
remedy

Check scanning operation with SIM1-1.

L3

00

Content Scanner return trouble
Detail

Scanner return is not finished within the
specified time. (timer is change by
magnification)

Cause

Mirror unit defective
Scanner wire disconnected

Check
and
remedy

Check scanning operation with SIM1-1.

L4

01

Content Main motor lock detected
Detail

Motor lock signal is detected for 1.5
seconds during main motor rotation

Cause

Main motor defective
Improper connection of harness
between PCU PWB and main motor
Control circuit defective

Check
and
remedy

Check main motor operation with
SIM25-1.
Check harness and connector between
PCU PWB and main motor.

L6

10

Content Polygon motor lock detected
Detail

It was judged that there is no output of
polygon motor lock signal of LSU.
The lock signal was checked at about
10-second intervals after the polygon
motor started rotating. As result, it was
judged that the polygon motor failed to
operate normally.

Cause

Disconnected connecter to LSU or
detached harness inside LSU or broken
wire.
Polygon motor defective

Check
and
remedy

Check polygon motor operation with
SIM61-1.
Check harness and connector for
connection. Replace LSU if needed.

L8

01

Content No full-wave signal
Detail

Full-wave signal is not detected.

Cause

PCU PWB trouble
Power unit trouble

Check
and
remedy

Check connection of the harness and
the connector.
Replace the PCU PWB. 
Replace the power unit.

02

Content Full-wave signal abnormality
Detai

Full-wave signal frequency abnormality
detected.
(The detected frequency: 69Hz or above
or 42.5Hz or below)

Cause

Check for disconnection or improper
connection of the connector of the PCU
PWB and the power PWB harness.
PCU PWB trouble
Power unit trouble

Check
and
remedy

Check connection of the harness and
connector.
Replace the power unit.

AR-405

1/21/1999

11 – 6