Sharp AR-M207 Service Manual page 90

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code code
L8 01 Content No full wave signal.
Detail The zero cross signal is not detected.
Cause Power unit abnormality.
MCU PWB abnormality.
Check Check connection of the harness and
and connectors.
remedy Replace the MCU PWB.
Replace the power unit.
U1 03 Content FAX board battery error.
Detail FAX board backup battery error.
Cause The voltage of the backup battery of SRAM
which is installed to the FAX board falls below a
certain level.
Check Replace the battery.
and
remedy
U2 04 Content EEPROM read/write error (serial
communication error).
Detail EEPROM access process error.
Cause EEPROM abnormality.
Check Check that the EEPROM is properly set.
and Use SIM 16 to cancel the trouble.
remedy Replace the MCU PWB.
11 Content Counter check sum error (EEPROM).
Detail Check sum error of the counter area in the
EEPROM.
Cause EEPROM abnormality.
Check Check that the EEPROM is properly set.
and Use SIM 16 to cancel the trouble.
remedy Replace the MCU PWB.
40 Content CRUM chip communication error.
Detail An error occurs during communication
between the MCU and the CRUM chip.
Cause CRUM chip abnormality.
Developing unit disconnection.
MCU PWB abnormality.
Check Replace the chip.
and Check installation of the developing unit.
remedy Use SIM 16 to cancel the trouble.
Replace the MCU PWB.
U9 00 Content Panel board communication trouble.
Detail Communication trouble with the panel board.
Cause No command can be sent from the MCU to the
panel.
Check MCU PWB - Panel PWB harness trouble.
and Replace the panel or the MCU PWB.
remedy Machine reset (Power OFF/ON).
80 Content Panel board communication trouble (Protocol).
Detail An error occurs in communication between
MCU -Panel PWB.
Cause MCU PWB - Panel PWB harness trouble/
Garbled data.
Check MCU PWB - Panel PWB harness trouble.
and Replace the panel or the MCU PWB.
remedy Machine reset (Power OFF/ON).
81 Content Panel board communication trouble (Parity).
Detail A parity error occurs in communication
between the MCU and the Panel PWB.
Cause MCU PWB - Panel PWB harness trouble/
Garbled data.
Check MCU PWB - Panel PWB harness trouble.
and Replace the panel or the MCU PWB.
remedy Machine reset (Power OFF/ON).
Details of trouble
AR-M207 M165 M162 TROUBLE CODE LIST 8-5
Main Sub
code code
U9 82 Content Panel board communication trouble (Overrun).
Detail An overrun error occurs in communication
between the MCU and the panel board.
Cause MCU PWB - Panel PWB harness trouble/
Garbled data.
Check MCU PWB - Panel PWB harness trouble.
and Replace the panel or the MCU PWB.
remedy Machine reset (Power OFF/ON).
84 Content Panel board communication trouble (Framing).
Detail A framing error occurs in communication
between the MCU and the Panel PWB.
Cause MCU PWB - Panel PWB harness trouble/
Garbled data.
Check MCU PWB - Panel PWB harness trouble.
and Replace the panel or the MCU PWB.
remedy Machine reset (Power OFF/ON).
88 Content Panel board communication trouble (Time out).
Detail A time-out error occurs in communication
between the MCU and the Panel PWB.
Cause A command is completely sent from the MCU
to the panel.
Check MCU PWB - Panel PWB harness trouble.
and Replace the panel or the MCU PWB.
remedy Machine reset (Power OFF/ON).
99 Content Panel language error.
Detail Language discrepancy error.
Cause Discrepancy between the machine language
and the panel language.
Check Replace the panel or the MCU PWB.
and Reset the machine. (Power OFF/ON).
remedy
Details of trouble