Read Sharp AR-205 (serv.man12) Service Manual online
Main
code
code
Sub
code
Detail of trouble
U2
04
Cause
EEPROM failure
Installation of uninitialized EEPROM
MCU PWB EERPOM access
circuit failure
Installation of uninitialized EEPROM
MCU PWB EERPOM access
circuit failure
Check and
remedy
remedy
Check that the EEPROM is
properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement
properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement
11
Content
Counter check sum error
Detail
Counter check sum value stored
in the EEPROM is abnormal.
in the EEPROM is abnormal.
Cause
EEPROM failure
Control circuit hung up by noises
MCU PWB EEPROM access
circuit defect
Control circuit hung up by noises
MCU PWB EEPROM access
circuit defect
Check and
remedy
remedy
Check that the EEPROM is
properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement
properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement
12
Content
Adjustment value check sum error
(EEPROM)
(EEPROM)
Detail
Adjustment value data area check
sum error
sum error
Cause
EEPROM failure
Control circuit hung up by noises
MCU PWB EEPROM access
circuit failure
Control circuit hung up by noises
MCU PWB EEPROM access
circuit failure
12
Check and
remedy
remedy
Check that the EEPROM is
properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement
properly set.
To prevent against loss of
counter/adjustment values, record
the values with simulation.
U2 trouble cancel with SIM 16
MCU PWB replacement
U3
29
Content
Mirror base home position error
Detail
Home position is not detected
when starting mirror base shift.
when starting mirror base shift.
Cause
Mirror unit defect
Mirror home position sensor defect
MCU PWB decfect
Scanner wire disconnection
Mirror home position sensor defect
MCU PWB decfect
Scanner wire disconnection
Check and
remedy
remedy
Check the scanning operation with
SIM 1-1.
SIM 1-1.
U9
00
Content
U9-
∗∗
Communication trouble
between MCU and OPE (OPE
detection)
detection)
Detail
Communication setup error,
framing, parity, protocol error
framing, parity, protocol error
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Main
code
code
Sub
code
Detail of trouble
U9
00
Check and
remedy
remedy
Check the connectors and harness
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.
Check the ROM of the operation
control PWB.
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.
Check the ROM of the operation
control PWB.
80
Content
Operation control PWB
communication trouble (Protocol)
communication trouble (Protocol)
Detail
Communication trouble between
MCU and the operation control
PWB (Protocol error)
MCU and the operation control
PWB (Protocol error)
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Check and
remedy
remedy
Check the connectors and harness
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.
81
Content
Operation control PWB
communication trouble (Parity)
communication trouble (Parity)
Detail
Communication trouble between
MCU and the operation control
PWB (Parity error)
MCU and the operation control
PWB (Parity error)
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Check and
remedy
remedy
Check the connectors and harness
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.
82
Content
Operation control PWB
communication trouble (Overrun)
communication trouble (Overrun)
Detail
Communication trouble between
MCU and the operation control
PWB (Overrun error)
MCU and the operation control
PWB (Overrun error)
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Check and
remedy
remedy
Check the connectors and harness
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.
84
Content
Operation control PWB
communication trouble (Framing)
communication trouble (Framing)
Detail
Communication trouble between
MCU and the operation control
PWB (Framing error)
MCU and the operation control
PWB (Framing error)
Cause
Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure
disconnection
Operation control PWB MCU PWB
harness failure
Check and
remedy
remedy
Check the connectors and harness
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.
AR-205
9 – 5
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