Read Sharp AR-505 (serv.man11) Service Manual online
Trouble code
Description
Main
code
code
Sub
code
L3
00
Content Scanner return trouble
Detail
Detail
Scanner return is not finished within the
specified time. (timer is change by
magnification)
specified time. (timer is change by
magnification)
Cause
Mirror unit defective
Scanner wire disconnected
Scanner wire disconnected
Check
and
remedy
and
remedy
Check scanning operation with SIM1-1.
L4
01
Content Main motor lock detection
Detail
Detail
Motor lock signal is detected for 1.5
seconds during main motor rotation
seconds during main motor rotation
Cause
Main motor defective
Improper connection of harness between
PCU PWB and main motor
Control circuit defective
Improper connection of harness between
PCU PWB and main motor
Control circuit defective
Check
and
remedy
and
remedy
Check main motor operation with
SIM25-1.
Check harness and connector between
PCU PWB and main motor.
SIM25-1.
Check harness and connector between
PCU PWB and main motor.
L6
10
Content Polygon motor lock detection
Detail
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.
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
detached harness inside LSU or broken
wire.
Polygon motor defective
Check
and
remedy
and
remedy
Check polygon motor operation with
SIM61-1.
Check harness and connector for
connection. Replace LSU if needed.
SIM61-1.
Check harness and connector for
connection. Replace LSU if needed.
L8
01
Content No full-wave signal
Detail
Detail
Full-wave signal is not detected.
Cause
PCU PWB trouble
Power unit trouble
Power unit trouble
Check
and
remedy
and
remedy
Check connection of the harness and the
connector.
Replace the PCU PWB.
Replace the power unit.
connector.
Replace the PCU PWB.
Replace the power unit.
02
Content Full-wave signal with abnormality
Detai
Detai
Full-wave signal frequency abnormality
detected.
(The detected frequency: 69Hz or above
or 42.5Hz or below)
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
connection of the connector of the PCU
PWB and the power PWB harness.
PCU PWB trouble
Power unit trouble
Check
and
remedy
and
remedy
Check connection of the harness and
connector.
Replace the power unit.
connector.
Replace the power unit.
Trouble code
Description
Main
code
code
Sub
code
U2
00
Content EEPROM read/write error
Detail
Detail
EEPROM version error. Error in writing
into EEPROM.
into EEPROM.
Cause
EEPROM defective
Uninitialized EEPROM is installed
Defective EEPROM access circuit on
PCU PWB
Uninitialized EEPROM is installed
Defective EEPROM access circuit on
PCU PWB
Check
and
remedy
and
remedy
Check EEPROM for proper set-up
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
11
Content Counter check sum error (EEPROM)
Detail
Detail
Checksum error in counter data area
Cause
EEPROM defective
Control circuit hung up due to noise
Defective EEPROM access circuit on
PCU PWB
Control circuit hung up due to noise
Defective EEPROM access circuit on
PCU PWB
Check
and
remedy
and
remedy
Check EEPROM for proper set-up
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
U2
12
Content Adjustment value check sum error
(EEPROM)
Detail
Checksum error in adjustment value data
area
area
Cause
EEPROM defective
Control circuit hung up due to noise.
Defective EEPROM access circuit on
PCU PWB
Control circuit hung up due to noise.
Defective EEPROM access circuit on
PCU PWB
Check
and
remedy
and
remedy
Check EEPROM for proper set-up
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
To prevent the erasure of counter data
and adjustment values, write down the
counter data and adjustment values by
simulation. (If there is a printer option,
execute SIM23-1 and note counter
data/adjustment values.)
Clear U2 trouble with SIM16.
Replace PCU PWB.
AR-505
8/6/1999
9 – 7
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