Trouble Codes - Sharp AR-FX12 Service Manual

5. Trouble codes

* Only the FAX-related codes are extracted.
A. Details of trouble codes
MAIN SUB
F6 00 Content Communication trouble (ICU detection)
between ICU and FAX.
Details Communication establishment error/Fleming/
Parity/Protocol error.
Cause Slave unit PWB connector disconnection.
Harness abnormality between slave unit
PWB and ICU PWB.
Slave unit PWB mother board connector pin
breakage.
Slave unit ROM abnormality/No ROM/
Reverse insertion of ROM/ROM pin
breakable.
Check & Check connector harness between slave unit
Remedy PWB and ICU PWB.
Check grounding of machine.
Check slave unit PWB ROM.
01 Content FAX expansion flash memory abnormality
(ICU detection).
Details The Flash memory could not be deleted.
Cause The Flash memory could not be deleted.
Check & Check the Flash memory for saving the FAX
Remedy images.
Clear the Flash memory with SIM66-10.
04 Content FAX modem operation abnormality.
Details FAX PWB modem chip operation
abnormality.
Cause SW101 on the FAX PWB tries to operate
normally on the boot side.
Operation trouble of the Modem chip on the
FAX PWB
Check & Set SW101 on the FAX PWB to the other
Remedy side than the BOOT side, and supply power
again.
20 Content FAX write protect cancel.
Details The write protect DIP switch on the ICU PWB
is released (canceled).
Cause The FAX write protect DIP switch is set to the
FAX write enable position.
FAX PWB trouble.
Check & Check the write protect DIP switch on the
Remedy ICU PWB.
Replace the FAX PWB and the ICU PWB.
F6 21 Content Abnormal combination of the TEL/LIU PWB
and the FAX soft switch.
Details Abnormal combination of the TEL/LIU PWB
and the FAX PWB information (soft switch).
The TEL/LIU PWB is not a new one for a new
MDMC PWB.
Cause Erroneous destination of the installed TEL/
LIU PWB.
Erroneous FAX PWB information
(soft switch).
The TEL/LIU is not a new one.
Abnormal TEL/LIU PWB.
Check & Check the destination of the TEL/LIU PWB.
Remedy Check the FAX PWB information
(soft switches).
Replace the TEL/LIU PWB with a new one.
Replace the TEL/LIU PWB.
MAIN SUB
F6
F7
U1
AR-FX12 MACHINE OPERATION 7-4
97 Content FAX-BOX incompatibility trouble
The FAX-BOX PWB is not one for the AR-
FX12(FAX detection).
Details The Modem controller PWB of the FAX-BOX
is not for the AR-FX12.
Cause Because the FAX-BOX modem controller
PWB information (hard detection) is not for
the AR-FX12.
Check & Check the FAX-BOX modem controller PWB.
Remedy Replace it with a modem controller PWB for
the AR-FX12.
98 Content Abnormal combination of the FAX-BOX
destination information and the machine
destination information
Details Abnormal combination of the FAX-BOX
destination information and the machine
destination information
Cause Combination between the destination
information saved in the EEPROM on the
FAX-BOX and the machine destination
information (set with SIM26-6) is abnormal.
Check & Check the FAX-BOX destination.
Remedy Check the machine destination setup
(SIM26-6).
Use the proper combination of the machine
and the FAX-BOX.
01 Content FAX board EEPROM read/write error
Details EEPROM access error (read/write)
Cause EEPROM trouble
FAX PWB EEPROM access circuit trouble
Check & When replacing the EEPROM, use SIM72-1
Remedy to write the default value and adjust with
SIM66-4/5 (Signal send level) and SIM66-14/
15/16 (Dial text). Note that all the soft
switches are reset to the initial values.
If the PWB is replaced, the adjustments are
not required.
01 Content FAX Battery abnormality (on the ICU PWB)
Detail FAX Backup SRAM battery voltage fall
Cause Battery life
Battery circuit abnormality
Check and Check that the battery voltage is about 2.5V
remedy or above.
Check the battery circuit.
02 Content RTC read abnormality
(common with FAX, on ICU PWB)
Details The value read from RTC on ICU PWB is
[EE]h (abnormal).
Cause RTC circuit abnormality
Battery voltage fall
Battery circuit abnormality
Check & Set the time again with key operation, and
Remedy check that time advances properly.
Check RTC circuit.
Check that battery voltage is about 2.5V or
above.
Check battery circuit.