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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