Sharp AL-1611 Service Manual page 56

Main Sub
code code
U9 80 Content Operation control PWB communication
trouble (Protocol)
Detail Communication trouble between
MCU and the operation control
PWB (Protocol error)
Cause Operation control PWB connector dis-
connection
Operation control PWB MCU PWB har-
ness failure
Check and Check the connectors and harness of
remedy the operation control PWB and the MCU
PWB.
Check grounding of the machine.
81 Content Operation control PWB communication
trouble (Parity)
Detail Communication trouble between MCU
and the operation control PWB (Parity
error)
Cause Operation control PWB connector dis-
connection
Operation control PWB MCU PWB har-
ness failure
Check and Check the connectors and harness of
remedy the operation control PWB and the MCU
PWB.
Check grounding of the machine.
82 Content Operation control PWB communication
trouble (Overrun)
Detail Communication trouble between MCU
and the operation control PWB (Overrun
error)
Cause Operation control PWB connector dis-
connection
Operation control PWB MCU PWB har-
ness failure
Check and Check the connectors and harness of
remedy the operation control PWB and the MCU
PWB.
Check grounding of the machine.
84 Content Operation control PWB communication
trouble (Framing)
Detail Communication trouble between MCU
and the operation control PWB (Framing
error)
Cause Operation control PWB connector dis-
connection
Operation control PWB MCU PWB har-
ness failure
Check and Check the connectors and harness of
remedy the operation control PWB and the MCU
PWB.
Check grounding of the machine.
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 dis-
connection
Operation control PWB MCU PWB har-
ness failure
Check and Check the connectors and harness of
remedy the operation control PWB and the MCU
PWB.
Check grounding of the machine.
Detail of trouble
AL-1611/AL-1622 TROUBLE CODE LIST
10 – 6
Main Sub
code code
U95 Content Operation control PWB communication
error
Detail Communication error between the oper-
ation control PWB and the MCU PWB
(Detected by the OPE-PWB)
Cause Disconnection or reverse connection of
the flat cable between the Operation
control PWB and the MCU PWB.
Operation control PWB trouble
MCU PWB trouble
Connector trouble of the operation con-
trol PWB and the MCU PWB
Check and Check insertion of or replace the flat
remedy cable between the operation control
PWB and the MCU PWB.
Replace the operation control PWB.
Replace the MCU PWB.
Check connection of the connector of the
operation control PWB and the MCU
PWB.
U99 Content Operation control PWB communication
error
Detail Communication error between the oper-
ation control PWB and the MCU PWB
(Detected by the OPE-PWB)
Cause Disconnection or reverse connection of
the flat cable between the Operation
control PWB and the MCU PWB.
Operation control PWB trouble MCU
PWB trouble
Connector trouble of the operation con-
trol PWB and the MCU PWB
Check and Check insertion of or replace the flat
remedy cable between the operation control
PWB and the MCU PWB.
Replace the operation control PWB.
Replace the MCU PWB.
Check connection of the connector of the
operation control PWB and the MCU
PWB.
Detail of trouble