AR-205 (serv.man12). AR205 Service Manual-Trouble Code List - Sharp Copying Equipment Service Manual (repair manual). Page 8

Main 
code

Sub

code

Detail of trouble

U9

88

Content

Operation control PWB
communication trouble (Time-out)

Detail

Communication trouble between
MCU and the operation PWB
(Time-out error)

Cause

Operation control PWB connector
disconnection
Operation control PWB MCU PWB
harness failure

Check and
remedy

Check the connectors and harness
of the operation control PWB and
the MCU PWB.
Check grounding of the machine.

F6

00

Content

F6**: Communication trouble
between MCU and FAX (MCU
detection)

Detail

Communication establishment
error, framing error, parity error,
protocol error

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB.
Motherboard connector pin
breakage
FAX control PWB ROM error, data
error

Check and
remedy

Check connector/harness of FAX
control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

10

Content

FAX control PWB trouble

Detail

Communication trouble between
MCU and FAX control WPB

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

80

Content

FAX control PWB communication
trouble (Protocol)

Detail

Communication trouble between
MCU and FAX control PWB
(Protocol error)

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

Main 
code

Sub

code

Detail of trouble

F6

81

Content

FAX control PWB communication
trouble (Parity)

Detail

Communication trouble between
MCU and FAX control PWB
(Parity error)

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

82

Content

FAX control PWB communication
trouble (Overrun)

Detail

Communication trouble between
MCU and FAX control PWB
(Overrun error)

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

84

Content

FAX control PWB communication
trouble (Framing)

Detail

Communication trouble between
MCU and FAX control PWB
(Framing error)

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

Check and
remedy

Check connector/harness between
FAX control PWB and MCU PWB.
Check grounding of the machine.
Check FAX control PWB ROM.

88

Content

FAX control PWB communication
trouble (Timeout)

Detail

Communication trouble between
MCU and FAX control PWB
(Timeout error)

Cause

Bad connection of FAX control
PWB connector
Defective harness between FAX
control PWB and MCU PWB
Motherboard connector pin
breakage
FAX control PWB ROM error/Data
error

AR-205

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