MX-M700N SELF DIAG AND TROUBLE CODE 8 – 20
PF-00 RIC copy inhibit command receive
U1-01 FAX battery abnormality
U1-02 RTC read error (combined use as FAX,
on MFP control PWB)
U2-00 EEPROM read/write error
(MFP control)
U2-11 Counter check sum error
(MFP control)
U2-12 Adjustment value check sum error
(MFP control)
U2-22 SRAM memory check sum error
(MFP control)
Details The copy inhibit command is received from the RIC
(host). (By PPC communication standards.)
Section Controller
Case 1 Cause Judged by the host.
Check and
remedy
Notification to the host
Details FAX backup SRAM battery voltage fall.
When the battery capacity is less than the
threshold value (fixed by the hardware),
it is judged as an error.
(Insufficient capacity of the SRAM backup battery)
Section FAX
Case 1 Cause Battery life
Check and
remedy
Check that the battery voltage is about 2.5V or
above.
Case 2 Cause Battery circuit trouble
Check and
remedy
Check the battery circuit.
Details The read value from the RTC on the MFP control
PWB is abnormal such as "EE"h.
Section Controller
Case 1 Cause RTC circuit trouble
Check and
remedy
Make the time setup again with the key operation
and check that the time advances normally.
Check the RTC circuit.
Case 2 Cause Battery voltage fall
Check and
remedy
Check that the battery voltage is about 2.5V or
above.
Case 3 Cause Battery circuit trouble
Check and
remedy
Check the battery circuit.
Details EEPROM write error (without retry)
EEPROM magic number error.
Section Controller
Case 1 Cause EEPROM trouble
Check and
remedy
Check that the EEPROM is properly installed.
In the simulation to prevent against delete of the
counter data/adjustment values, write down the
counter/adjustment values.
Case 2 Cause Insertion of EEPROM which is not initialized
Check and
remedy
Use SIM 16 to cancel the U2 trouble.
Case 3 Cause MFP control PWB
EEPROM access circuit trouble
Check and
remedy
Replace the MFP control PWB.
Details EEPROM counter area checksum error.
(If this error occurs, the process will retrieve for
effective data within 8 blocks.)
Section Controller
Case 1 Cause EEPROM trouble
Check and
remedy
Check that the EEPROM is properly installed.
In the simulation to prevent against delete of the
counter data/adjustment values, write down the
counter/adjustment values.
Case 2 Cause Control circuit runaway due to noises
Check and
remedy
Use SIM 16 to cancel the U2 trouble.
Case 3 Cause MFP control PWB EEPROM access circuit trouble
Check and
remedy
Replace the MFP control PWB.
Details EEPROM counter area checksum error
(If this error occurs, the process will retrieve for
effective data within 8 blocks.)
Section Controller
Case 1 Cause EEPROM trouble
Check and
remedy
Check that the EEPROM is properly installed.
In the simulation to prevent against delete of the
counter data/adjustment values, write down the
counter/adjustment values.
Case 2 Cause Control circuit runaway due to noises
Check and
remedy
Use SIM 16 to cancel the U2 trouble.
Case 3 Cause MFP control PWB EEPROM access circuit trouble
Check and
remedy
Replace the MFP control PWB.
Details SRAM check sum error when turning on the power.
(If this error occurs, initialize the one-touch dial and
the FAX soft switches.)
Section Controller
Case 1 Cause SRAM trouble
Check and
remedy
Initialize the communication management table
registered in the SRAM and the FAX soft switch.
Since the registered data are deleted, register the
data again.
Case 2 Cause Control circuit runaway due to noises
Check and
remedy
Use SIM 16 to cancel the U2 trouble.
Case 3 Cause MFP control PWB EEPROM access circuit trouble
Check and
remedy
Replace the MFP control PWB.
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