Code: F1-44
Description:
Stitch motor rear trouble
Causes:
Motor trouble, hp sensor trouble, harness disconnection, finisher control PWB trouble
Remedy:
Use SIM3-3 to check the operation of the rear stitch motor. Replace the finisher control PWB.
Code: F1-45
Description:
Stitch motor front trouble
Causes:
Motor trouble, hp sensor trouble, harness disconnection, finisher control PWB trouble
Remedy:
Use SIM3-3 to check the operation of the front stitch motor. Replace the finisher control PWB.

Code: F1-46
Description:
Paper pushing motor trouble
Causes:
Motor trouble, hp sensor trouble, harness disconnection, finisher control PWB trouble
Remedy:
Use SIM3-3 to check the operation of the paper pushing motor. Replace the finisher control PWB.
Code: F1-50
Description:
Finisher incompatibility trouble
Causes:
Connection of the AR-F13, etc. which is incompatible with MX-5500N/6200N/7000N is detected.
Remedy:
Connect the MX-FNX3/MX-FNX4.
Code: F1-51
Description:
Sensor connector connection trouble
Causes:
Sensor trouble, harness disconnection, finisher control PWB trouble
Remedy:
Use SIM3-2 to check the operation of the guide hp sensor, the paper pushing plate hp sensor, and the paper pushing plate lead edge sensor. Replace the finisher control PWB.
Code: F1-52
Description:
Micro SW trouble
Causes:
Sensor trouble, harness disconnection, finisher control PWB trouble
Remedy:
Use SIM3-2 to check the operation of the inlet port cover open/close sensor and the paper exit cover open/close sensor. Replace the finisher control PWB.
Code: F1-60
Description:
Communication trouble between the finisher and the inserter
Causes:
Communication error between the finisher and the inserter
Remedy:
Case 1 Cause Malfunction due to electrical noises. Check and remedy Turn ON/OFF the power to cancel the error. Case 2 Cause Connection trouble or disconnection of the connector and the harness between the finisher and the inserter. Finisher control PWB trouble, inserter control PWB trouble Check and remedy Check the connector and the harness in the communication line. Replace the finisher control PWB. Replace the inserter control PWB.
Code: F1-61
Description:
Inserter EEPROM trouble
Causes:
EEPROM trouble, finisher control PWB trouble, inserter control PWB trouble
Remedy:
Replace the finisher control PWB. Replace the inserter control PWB.
Code: F1-62
Description:
Inserter reverse sensor trouble
Causes:
Sensor trouble, harness disconnection, finisher control PWB trouble, inserter control PWB trouble
Remedy:
Use SIM3-2 to check the operation of the inlet port cover open/close sensor and the paper exit cover open/close sensor. Replace the finisher control PWB. Replace the inserter control PWB.
Code: F2-02
Description:
Toner supply abnormality (K2)
Causes:
Toner end with the remaining quantity of 25% or more. The toner supply time exceeds 5 times as much as the specified time.
Remedy:
Case 1 Cause Toner motor section connector harness trouble Check and remedy Check the connector connection of the toner motor section. Check the connector harness (TM) connection to the main PWB. Case 2 Cause Toner motor and toner density sensor trouble. Piezoelectric sensor abnormality Check and remedy 1) Check the toner density sensor output. (SIM25-1) 2) Check that the toner transport pipe is not clogged between the toner cartridge and the developing unit. Replace the toner cartridge (CRUM) if necessary. Intermediate hopper replacement 3) If replacement of the toner cartridge (CRUM) does not clear the trouble, check the developing unit.
Code: F2-04
Description:
Toner cartridge improper (K2)
Causes:
An improper cartridge is inserted. Toner cartridge trouble
Remedy:
Replace the toner cartridge.
Code: F2-05
Description:
Toner cartridge CRUM error (K2)
Causes:
CRUM cannot be read or written.
Remedy:
Case 1 Cause Connection trouble or disconnection of the connector and the harness between the PCU and the toner cartridge. Check and remedy Check the connector and the harness between the PCU and the toner cartridge. Case 2 Cause CRUM trouble Check and remedy Replace the toner cartridge. Case 3 Cause PCU PWB trouble Check and remedy Replace the PCU PWB.
Code: F2-39
Description:
Process thermistor trouble
Causes:
Process thermistor open
Remedy:
Case 1 Cause Process thermistor harness connection trouble Check and remedy Check the connection of the harness and connector of the process thermistor. Case 2 Cause Process thermistor trouble Check and remedy Check the connection of the harness and connector of the process thermistor. Case 3 Cause PCU PWB trouble Check and remedy Check the PCU PWB.
Code: F2-40
Description:
Toner empty sensor abnormality (K)
Causes:
Toner empty sensor output abnormality. Sample level 25 or less or 231 or above.
Remedy:
Case 1 Cause The connector is not installed. Check and remedy Check the connection of the connector harness to the PCU PWB. Check the connection of the toner empty sensor. Case 2 Cause Connector harness trouble Check and remedy Check the harness disconnection. Case 3 Cause Cartridge trouble Check and remedy Check the cartridge connection.
Code: F2-41
Description:
Toner empty sensor abnormality (C)
Causes:
Toner empty sensor output abnormality. Sample level 25 or less or 231 or above.
Remedy:
Case 1 Cause The connector is not installed. Check and remedy Check the connection of the connector harness to the PCU PWB. Check the connection of the toner empty sensor. Case 2 Cause Connector harness trouble Check and remedy Check the harness disconnection. Case 3 Cause Cartridge trouble Check and remedy Check the cartridge connection.
Code: F2-42
Description:
Toner empty sensor abnormality (M)
Causes:
Toner empty sensor output abnormality. Sample level 25 or less or 231 or above.
Remedy:
Case 1 Cause The connector is not installed. Check and remedy Check the connection of the connector harness to the PCU PWB. Check the connection of the toner empty sensor. Case 2 Cause Connector harness trouble Check and remedy Check the harness disconnection. Case 3 Cause Cartridge trouble Check and remedy Check the cartridge connection.
Code: F2-43
Description:
Toner empty sensor abnormality (Y)
Causes:
Toner empty sensor output abnormality. Sample level 25 or less or 231 or above.
Remedy:
Case 1 Cause The connector is not installed. Check and remedy Check the connection of the connector harness to the PCU PWB. Check the connection of the toner empty sensor. Case 2 Cause Connector harness trouble Check and remedy Check the harness disconnection. Case 3 Cause Cartridge trouble Check and remedy Check the cartridge connection.
Code: F2-44
Description:
Black exclusive image density sensor trouble (Transfer belt surface reflection ratio abnormality)
Causes:
Image density sensor trouble, harness connection trouble between PCU PWB and the image density sensor, image density sensor dirt, transfer belt cleaning trouble, calibration plate solenoid operation trouble
Remedy:
Use SIM44-2 to execute the process control sensor gain adjustment. If "ERROR" is displayed, check the sensor, the harness and the calibration plate solenoid operation for any trouble. If the adjustment is completed, check the transfer belt surface state.

Code: F2-45
Description:
Color exclusive image density sensor trouble (Calibration plate surface reflection ratio abnormality)
Causes:
Image density sensor trouble, harness connection trouble between PCU PWB and the image density sensor, image density sensor dirt, calibration plate dirt, calibration plate solenoid operation trouble
Remedy:
Use SIM44-2 to execute the process control sensor gain adjustment. If "ERROR" is displayed, check the sensor and the harness operation for any trouble. If the adjustment is completed, check the calibration plate solenoid operation.
Code: F2-49
Description:
LSU thermistor trouble
Causes:
The detection temperature is out of the range of -28°C to 78°C.
Remedy:
Case 1 Cause LSU thermistor harness connection trouble Check and remedy Check the connection of the LSU thermistor harness and connector. Case 2 Cause LSU thermistor trouble, PCU PWB trouble Check and remedy Replace the LSU thermistor. Replace the PCU PWB.
Code: F2-50
Description:
K phase sensor sensing trouble
Causes:
Detection is made by interruption of light in the sensor section of the projection rib on the drum drive gear to control the BK drum phase. The detection signal cannot be acquired and phase control cannot be made.
Remedy:
Case 1 Cause Sensor connector connection trouble Check and remedy Check the sensor connector connection. Case 2 Cause Dirt on the sensor light emitting section, or installation trouble Check and remedy Check for dirt on the sensor or check the installation state. Case 3 Cause Drum drive gear upper rib breakage, sensor trouble Check and remedy If there is no trouble in the rib, replace the sensor. (Use SIM30-1 "DhpD_K" to check interruption or transmission of light.)
Code: F2-51
Description:
CL phase sensor sensing trouble (C)
Causes:
Detection is made by interruption of light in the sensor section of the projection rib on the drum drive gear to control the color drum (C) phase. The detection signal cannot be acquired and phase control cannot be made.
Remedy:
Case 1 Cause Sensor connector connection trouble Check and remedy Check the sensor connector connection. Case 2 Cause Dirt on the sensor light emitting section, or installation trouble Check and remedy Check for dirt on the sensor or check the installation state. Case 3 Cause Drum drive gear upper rib breakage, sensor trouble Check and remedy If there is no trouble in the rib, replace the sensor. (Use SIM30-1 "DhpD_C" to check interruption or transmission of light.)
Code: F2-52
Description:
CL phase sensor sensing trouble (M)
Causes:
Detection is made by interruption of light in the sensor section of the projection rib on the drum drive gear to control the color drum (M) phase. The detection signal cannot be acquired and phase control cannot be made.
Remedy:
Case 1 Cause Sensor connector connection trouble Check and remedy Check the sensor connector connection. Case 2 Cause Dirt on the sensor light emitting section, or installation trouble Check and remedy Check for dirt on the sensor or check the installation state. Case 3 Cause Drum drive gear upper rib breakage, sensor trouble Check and remedy If there is no trouble in the rib, replace the sensor. (Use SIM30-1 "DhpD_M" to check interruption or transmission of light.)
Code: F2-53
Description:
CL phase sensor sensing trouble (Y)
Causes:
Detection is made by interruption of light in the sensor section of the projection rib on the drum drive gear to control the color drum (Y) phase. The detection signal cannot be acquired and phase control cannot be made.
Remedy:
Case 1 Cause Sensor connector connection trouble Check and remedy Check the sensor connector connection. Case 2 Cause Dirt on the sensor light emitting section, or installation trouble Check and remedy Check for dirt on the sensor or check the installation state. Case 3 Cause Drum drive gear upper rib breakage, sensor trouble Check and remedy If there is no trouble in the rib, replace the sensor. (Use SIM30-1 "DhpD_Y" to check interruption or transmission of light.)
Code: F2-58
Description:
Process humidity sensor trouble
Causes:
Process humidity sensor open
Remedy:
Case 1 Cause Process humidity sensor harness connection trouble Check and remedy Check the harness and connector connection of the process humidity sensor. Case 2 Cause Process humidity sensor trouble Check and remedy Check the process humidity sensor. Case 3 Cause PCU PWB trouble Check and remedy Check the PCU PWB.
Code: F2-64
Description:
Toner supply abnormality (K)
Causes:
Toner end with the remaining quantity of 25% or more. The toner supply time exceeds 5 times as much as the specified time.
Remedy:
Case 1 Cause Toner motor section connector harness trouble Check and remedy Check the connector connection of the toner motor section. Check the connector harness (TM) connection to the main PWB. Case 2 Cause Toner motor and toner density sensor trouble. Piezoelectric sensor abnormality Check and remedy 1) Check the toner density sensor output. (SIM25-1) 2) Check that the toner transport pipe is not clogged between the toner cartridge and the developing unit. Replace the toner cartridge (CRUM) if necessary. Intermediate hopper replacement 3) If replacement of the toner cartridge (CRUM) does not clear the trouble, check the developing unit.

Code: F2-65
Description:
Toner supply abnormality (C)
Causes:
Toner end with the remaining quantity of 75% or more. The toner supply time exceeds 3 times as much as the specified time.
Remedy:
Case 1 Cause Toner motor section connector harness trouble Check and remedy Check the connector connection of the toner motor section. Check the connector harness (TM) connection to the main PWB. Case 2 Cause Toner motor and toner density sensor trouble Check and remedy 1) Check the toner density sensor output. (SIM25-1) 2) Check that the toner transport pipe is not clogged between the toner cartridge and the developing unit. Replace the toner cartridge (CRUM) if necessary. 3) If replacement of the toner cartridge (CRUM) does not clear the trouble, check the developing unit.
Code: F2-66
Description:
Toner supply abnormality (M)
Causes:
Toner end with the remaining quantity of 75% or more. The toner supply time exceeds 3 times as much as the specified time.
Remedy:
Case 1 Cause Toner motor section connector harness trouble Check and remedy Check the connector connection of the toner motor section. Check the connector harness (TM) connection to the main PWB. Case 2 Cause Toner motor and toner density sensor trouble Check and remedy 1) Check the toner density sensor output. (SIM25-1) 2) Check that the toner transport pipe is not clogged between the toner cartridge and the developing unit. Replace the toner cartridge (CRUM) if necessary. 3) If replacement of the toner cartridge (CRUM) does not clear the trouble, check the developing unit.
Code: F2-67
Description:
Toner supply abnormality (Y)
Causes:
Toner end with the remaining quantity of 75% or more. The toner supply time exceeds 3 times as much as the specified time.
Remedy:
Case 1 Cause Toner motor section connector harness trouble Check and remedy Check the connector connection of the toner motor section. Check the connector harness (TM) connection to the main PWB. Case 2 Cause Toner motor and toner density sensor trouble Check and remedy 1) Check the toner density sensor output. (SIM25-1) 2) Check that the toner transport pipe is not clogged between the toner cartridge and the developing unit. Replace the toner cartridge (CRUM) if necessary. 3) If replacement of the toner cartridge (CRUM) does not clear the trouble, check the developing unit.
Code: F2-70
Description:
Toner cartridge improper (K)
Causes:
An improper cartridge is inserted. Toner cartridge trouble
Remedy:
Replace the toner cartridge.
Code: F2-71
Description:
Toner cartridge improper (C)
Causes:
An improper cartridge is inserted. Toner cartridge trouble
Remedy:
Replace the toner cartridge.
Code: F2-72
Description:
Toner cartridge improper (M)
Causes:
An improper cartridge is inserted. Toner cartridge trouble
Remedy:
Replace the toner cartridge.
Code: F2-73
Description:
Toner cartridge improper (Y)
Causes:
An improper cartridge is inserted. Toner cartridge trouble
Remedy:
Replace the toner cartridge.
Code: F2-74
Description:
Toner cartridge CRUM error (K)
Causes:
CRUM cannot be read or written.
Remedy:
Case 1 Cause Connection trouble or disconnection of the connector and the harness between the PCU and the toner cartridge. Check and remedy Check the connector and the harness between the PCU and the toner cartridge. Case 2 Cause CRUM trouble Check and remedy Replace the toner cartridge. Case 3 Cause Control (PCU) PWB trouble Check and remedy Replace the PCU PWB.

Code: F2-75
Description:
Toner cartridge CRUM error (C)
Causes:
CRUM cannot be read or written.
Remedy:
Case 1 Cause Connection trouble or disconnection of the connector and the harness between the PCU and the toner cartridge. Check and remedy Check the connector and the harness between the PCU and the toner cartridge. Case 2 Cause CRUM trouble Check and remedy Replace the toner cartridge. Case 3 Cause Control (PCU) PWB trouble Check and remedy Replace the PCU PWB.
Code: F2-76
Description:
Toner cartridge CRUM error (M)
Causes:
CRUM cannot be read or written.
Remedy:
Case 1 Cause Connection trouble or disconnection of the connector and the harness between the PCU and the toner cartridge. Check and remedy Check the connector and the harness between the PCU and the toner cartridge. Case 2 Cause CRUM trouble Check and remedy Replace the toner cartridge. Case 3 Cause Control (PCU) PWB trouble Check and remedy Replace the PCU PWB.
Code: F2-77
Description:
Toner cartridge CRUM error (Y)
Causes:
CRUM cannot be read or written.
Remedy:
Case 1 Cause Connection trouble or disconnection of the connector and the harness between the PCU and the toner cartridge. Check and remedy Check the connector and the harness between the PCU and the toner cartridge. Case 2 Cause CRUM trouble Check and remedy Replace the toner cartridge. Case 3 Cause Control (PCU) PWB trouble Check and remedy Replace the PCU PWB.
Code: F2-78
Description:
Registration exclusive image density sensor trouble (Transfer belt surface reflection ratio abnormality)
Causes:
Image density sensor trouble, harness connection trouble between PCU PWB and the image density sensor, image density sensor dirt, transfer belt cleaning trouble, calibration plate solenoid operation trouble
Remedy:
Check the sensor and the harness. Check the calibration plate solenoid operation and the transfer belt surface state. If the trouble is not cleared, replace the image sensor exclusively used for registration, replace the transfer belt, replace the calibration plate solenoid, or replace the PCU PWB according to the check result.
Code: F2-80
Description:
Half tone process control 1st patch reference value trouble (K)
Causes:
Image density sensor trouble, harness connection trouble between PCU sub PWB and the image density sensor, image density sensor dirt, transfer belt cleaning trouble
Remedy:
Use SIM44-2 to execute the process control sensor gain adjustment. If "ERROR" is displayed, check the sensor and the harness. If the adjustment is completed, check the drum surface state and the belt surface state.
Code: F2-81
Description:
Half tone process control 1st patch reference value trouble (C)
Causes:
Image density sensor trouble, harness connection trouble between PCU sub PWB and the image density sensor, image density sensor dirt, transfer belt cleaning trouble
Remedy:
Use SIM44-2 to execute the process control sensor gain adjustment. If "ERROR" is displayed, check the sensor and the harness. If the adjustment is completed, check the drum surface state and the belt surface state.
Code: F2-82
Description:
Half tone process control 1st patch reference value trouble (M)
Causes:
Image density sensor trouble, harness connection trouble between PCU sub PWB and the image density sensor, image density sensor dirt, transfer belt cleaning trouble
Remedy:
Use SIM44-2 to execute the process control sensor gain adjustment. If "ERROR" is displayed, check the sensor and the harness. If the adjustment is completed, check the drum surface state and the belt surface state.
Code: F2-83
Description:
Half tone process control 1st patch reference value trouble (Y)
Causes:
Image density sensor trouble, harness connection trouble between PCU sub PWB and the image density sensor, image density sensor dirt, transfer belt cleaning trouble
Remedy:
Use SIM44-2 to execute the process control sensor gain adjustment. If "ERROR" is displayed, check the sensor and the harness. If the adjustment is completed, check the drum surface state and the belt surface state.
Code: F2-84
Description:
Half tone process control 2nd patch reference value trouble (K)
Causes:
Image density sensor trouble, harness connection trouble between PCU sub PWB and the image density sensor, image density sensor dirt, transfer belt cleaning trouble
Remedy:
Use SIM44-2 to execute the process control sensor gain adjustment. If "ERROR" is displayed, check the sensor and the harness. If the adjustment is completed, check the drum surface state and the belt surface state.
Code: F2-85
Description:
Half tone process control 2nd patch reference value trouble (C)
Causes:
Image density sensor trouble, harness connection trouble between PCU sub PWB and the image density sensor, image density sensor dirt, transfer belt cleaning trouble
Remedy:
Use SIM44-2 to execute the process control sensor gain adjustment. If "ERROR" is displayed, check the sensor and the harness. If the adjustment is completed, check the drum surface state and the belt surface state.
Code: F2-86
Description:
Half tone process control 2nd patch reference value trouble (M)
Causes:
Image density sensor trouble, harness connection trouble between PCU sub PWB and the image density sensor, image density sensor dirt, transfer belt cleaning trouble
Remedy:
Use SIM44-2 to execute the process control sensor gain adjustment. If "ERROR" is displayed, check the sensor and the harness. If the adjustment is completed, check the drum surface state and the belt surface state.
Code: F2-87
Description:
Half tone process control 2nd patch reference value trouble (Y)
Causes:
Image density sensor trouble, harness connection trouble between PCU sub PWB and the image density sensor, image density sensor dirt, transfer belt cleaning trouble
Remedy:
Use SIM44-2 to execute the process control sensor gain adjustment. If "ERROR" is displayed, check the sensor and the harness. If the adjustment is completed, check the drum surface state and the belt surface state.
Code: F2-92
Description:
High-density process control density correction error (C)
Causes:
Image density sensor trouble, harness connection trouble between PCU PWB and image density sensor, dirt on image density sensor, transfer belt cleaning trouble
Remedy:
1) Use SIM44-2 to execute the process control sensor gain adjustment. 2) If an error occurs, check the sensors and the harnesses. 3) If the adjustment of 1) is completed, check the drum surface state, the belt surface state, etc.
Code: F2-93
Description:
High-density process control density correction error (M)
Causes:
Image density sensor trouble, harness connection trouble between PCU PWB and image density sensor, dirt on image density sensor, transfer belt cleaning trouble
Remedy:
1) Use SIM44-2 to execute the process control sensor gain adjustment. 2) If an error occurs, check the sensors and the harnesses. 3) If the adjustment of 1) is completed, check the drum surface state, the belt surface state, etc.
Code: F2-94
Description:
High-density process control density correction error (Y)
Causes:
Image density sensor trouble, harness connection trouble between PCU PWB and image density sensor, dirt on image density sensor, transfer belt cleaning trouble
Remedy:
1) Use SIM44-2 to execute the process control sensor gain adjustment. 2) If an error occurs, check the sensors and the harnesses. 3) If the adjustment of 1) is completed, check the drum surface state, the belt surface state, etc.
Code: F3-12
Description:
Tray 1 lift-up trouble
Causes:
T1LUD does not turn ON within the specified time.
Remedy:
Case 1 Cause T1LUD sensor trouble. Harness connection trouble between PCU PWB, the lift-up unit, and the paper feed unit. Check and remedy Check the harness and the connector of T1LUD. Case 2 Cause Tray 1 lift-up motor trouble Check and remedy Check the lift-up unit.
Code: F3-22
Description:
Tray 2 lift-up trouble
Causes:
T2LUD does not turn ON within the specified time.
Remedy:
Case 1 Cause T2LUD sensor trouble. Harness connection trouble between PCU PWB, the lift-up unit, and the paper feed unit. Check and remedy Check the harness and the connector of T2LUD. Case 2 Cause Tray 2 lift-up motor trouble Check and remedy Check the lift-up unit.
Code: F3-32
Description:
Tray 3 lift-up trouble
Causes:
LUD3 does not turn ON within the specified time.
Remedy:
Case 1 Cause LUD3 sensor trouble. Harness connection trouble between PCU PWB, the lift-up unit, and the paper feed unit. Check and remedy Check the harness and the connector of LUD3. Case 2 Cause Tray 3 lift-up motor trouble Check and remedy Check the lift-up unit.
Code: F3-42
Description:
Tray 4 lift-up trouble
Causes:
LUD4 does not turn ON within the specified time.
Remedy:
Case 1 Cause LUD4 sensor trouble. Harness connection trouble between PCU PWB, the lift-up unit, and the paper feed unit. Check and remedy Check the harness and the connector of LUD4. Case 2 Cause Tray 4 lift-up motor trouble Check and remedy Check the lift-up unit.
Code: F9-00
Description:
Communication trouble between the controller and the printer controller (FIERY option)
Causes:
A communication error is detected during initial establishment or after establishment of communication with the controller (FIERY option).
Remedy:
Case 1 Cause Printer controller MFPcnt PWB cable trouble Check and remedy Check the printer controller MFPcnt PWB cable. Case 2 Cause MFPcnt PWB trouble, printer controller PWB trouble Check and remedy Replace the MFPcnt PWB. Repair or replace the printer controller PWB. After completion of check, turn OFF/ON the machine and the printer controller.
Code: H2-00
Description:
Detection thermistor open (TH1_AD2) of the non-contact thermistor
Causes:
Thermistor trouble, control PWB trouble, fusing section connector connection trouble, AC power source trouble, fusing unit not-installed
Remedy:
Check the harness and the connector from the thermistor to the control PWB.
Code: H2-01
Description:
Lower thermistor open (TH_LM)
Causes:
Thermistor trouble, control PWB trouble, fusing section connector connection trouble, AC power source trouble, fusing unit not-installed
Remedy:
Check the harness and the connector from the thermistor to the control PWB.
Code: H2-02
Description:
Sub thermistor open (TH_US)
Causes:
Thermistor trouble, control PWB trouble, fusing section connector connection trouble, AC power source trouble, fusing unit not-installed
Remedy:
Check the harness and the connector from the thermistor to the control PWB.
Code: H2-03
Description:
Non-contact thermistor compensation thermistor open (TH1_AD1)
Causes:
Thermistor trouble, control PWB trouble, fusing section connector connection trouble, AC power source trouble
Remedy:
Check the harness and the connector from the thermistor to the control PWB.
Code: H2-04
Description:
External heating thermistor open (TH_EX1)
Causes:
Thermistor trouble, control PWB trouble, fusing section connector connection trouble, AC power source trouble
Remedy:
Check the harness and the connector from the thermistor to the control PWB.
Code: H2-05
Description:
Fusing external heating thermistor open (TH_EX2)
Causes:
Thermistor open
Remedy:
Case 1 Cause Fusing section connector and harness connection trouble Check and remedy Check the harness and the connector from the thermistor to the PCU PWB. Case 2 Cause Thermistor trouble, PCU PWB trouble Check and remedy Replace the thermistor or the PCU PWB.
Code: H3-00
Description:
Fusing section high temperature trouble (TH_UM)
Causes:
Thermistor trouble, control PWB trouble, fusing section connector connection error, AC power source trouble
Remedy:
1) Use SIM5-2 to check blinking of the heater lamp. 2) If it blinks normally, check the thermistor and the harness. Check the control PWB thermistor input circuit section. 3) If the heater lamp keep lighting, check the AC PWB and the control PWB lamp control circuit. 4) Use SIM14 to cancel the trouble.
Code: H3-01
Description:
Fusing section high temperature trouble (TH_LM)
Causes:
Thermistor trouble, control PWB trouble, fusing section connector connection error, AC power source trouble
Remedy:
1) Use SIM5-2 to check blinking of the heater lamp. 2) If it blinks normally, check the thermistor and the harness. Check the control PWB thermistor input circuit section. 3) If the heater lamp keep lighting, check the AC PWB and the control PWB lamp control circuit. 4) Use SIM14 to cancel the trouble.
Code: H3-02
Description:
Sub thermistor fusing section high temperature trouble (TH_US)
Causes:
Thermistor trouble, control PWB trouble, fusing section connector connection error, AC power source trouble
Remedy:
1) Use SIM5-2 to check blinking of the heater lamp. 2) If it blinks normally, check the thermistor and the harness. Check the control PWB thermistor input circuit section. 3) If the heater lamp keep lighting, check the AC PWB and the control PWB lamp control circuit. 4) Use SIM14 to cancel the trouble.
Code: H3-04
Description:
External heating thermistor high temperature trouble (TH_EX1)
Causes:
Thermistor trouble, control PWB trouble, fusing section connector connection error, AC power source trouble
Remedy:
1) Use Sim44-14 to check if the thermistor (TH_EX1) shows an abnormal temperature. If the display is normal, use Sim5-2 to check the blinking operation of the heater lamp. a) If it blinks normally, check the thermistor and the harness. Check the control PWB thermistor input circuit section. b) If the heater lamp keep lighting, check the AC PWB and the control PWB lamp control circuit. 2) Use SIM14 to cancel the trouble.
Code: H3-05
Description:
Fusing external thermistor high temperature trouble (TH_EX2)
Causes:
It is detected that the fusing temperature exceeds the specified temperature.
Remedy:
Case 1 Cause Fusing section connector and harness connection trouble Check and remedy Check the harness and the connector from the thermistor to the PCU PWB. Use SIM14 to cancel the trouble. Case 2 Cause Thermistor trouble, PCU PWB trouble Check and remedy Replace the thermistor or the PCU PWB. Use SIM14 to cancel the trouble.