Specifications

Main
code
Sub
code
Trouble content Detail of trouble
L4 01 Main motor lock When the main motor encoder pulse is not detected for 100msec.
L6 10 Polygon motor lock The lock signal (specified rpm signal) does not return within a certain time (about
20sec) from starting the polygon motor rotation
H2 00 Thermistor open detection The fusing thermistor is open.
H3 00 Heat roller abnormally high
temperature
The fusing temperature rises above 240˚C.
H4 00 Heat roller abnormally low
temperature
The fusing temperature does not reach 185˚C within 27 sec of turning on the power,
or the fusing temperature keeps at 140˚C.
U2 01 Counter sum check error When the counter check sum value stored in the EEPROM is abnormal.
U2 04 EEPROM serial communication
error
When a communication trouble occurs with the EEPROM.
Main
code
Sub
code
Detail of trouble
F9 10 Content Printer PWB trouble
Detail Communication trouble between
MCU and PRT
Cause Printer PWB connector
disconnection
Printer unit PWB MCU PWB
harness failure
Printer PWB ROM defect, data
failure
Check
and
remedy
Check the connectors and harness
of the printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
80 Content Printer PWB communication trouble
(protocol)
Detail Communication trouble between
MCU and printer PWB (Protocol
error)
Cause Printer PWB connector
disconnection
Printer PWB MCU PWB harness
failure
Printer PWB ROM defect, data
failure
Check
and
remedy
Check the connectors and harness
of the printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
81 Content Printer PWB communication trouble
(Parity)
Detail Communication trouble between
MCU and printer PWB (Parity error)
Cause Printer PWB connector
disconnection
Printer PWB MCU PWB harness
failure
Printer PWB ROM defect, data
failure
Check
and
remedy
Check the connectors and harness
of the printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the printer PWB.
82 Content Printer PWB communication trouble
(Overrun)
Detail Communication trouble between
MCU and printer PWB (Overrun
error)
Main
code
Sub
code
Detail of trouble
F9 82 Cause Printer PWB connector
disconnection
Printer PWB MCU PWB harness
failure
Printer PWB ROM defect, data
failure
Check
and
remedy
Check the connectors and harness
of the Printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the Printer
PWB.
84 Content Printer PWB communication trouble
(Framing)
Detail Communication trouble between
MCU and printer PWB (Framing
error)
Cause Printer PWB connector
disconnection
Printer PWB MCU PWB harness
failure
Printer PWB ROM defect, data
failure
Check
and
remedy
Check the connectors and harness
of the Printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the Printer
PWB.
88 Content Printer PWB communication trouble
(Time-out)
Detail Communication trouble between
MCU and printer PWB (Time-out
error)
Cause Printer PWB connector
disconnection
Printer PWB MCU PWB harness
failure
Printer PWB ROM defect, data
failure
Check
and
remedy
Check the connectors and harness
of the Printer PWB and the MCU
PWB.
Check grounding of the machine.
Check the ROM of the Printer
PWB.
U2 40 Content Serial communication error with
memory device chip
F2 04 Content Toner cartridge error (Use of toner
cartridge is inhibited.)
DM-1505
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