H2 00 thermistor fusing abnormality - Sharp AR-M160 Black and White Copier

C3D2 EPU board memory old parts detection error: The EPU board cannot detect the new process unit when the equipment is started in the EPU replacement mode ([7] + [START]). C410 Thermistor or heater abnormality at power-ON: Abnormality of service call the thermistor is detected when power is turned ON or the temperature of the fuser roller does not rise in a specified period of time after power is turned ON. C430 Thermistor abnormality after abnormality judgment: Abnormality of the thermistor is detected after a specified period of time has passed from power-ON (including ready state). C440 Heater abnormality after abnormality judgment: The temperature of the fuser roller has exceeded the range of control or does not even reach the range. C450 Thermistor abnormality during printing: Abnormality of the thermistor is detected during printing. C4C0 Fuser unit new/old detection fuse abnormality C550 RADF I/F error: Communication error has occurred between the RADF and the scanner. C551 Document feeder model detection error: An optional document feeder that is not compatible to this equipment is installed. C570 Communication error between Engine-CPU and IPC board C580 Communication error between IPC board and finisher C5A0 EEPROM communication abnormality (LGC board) C8E0 ADF communication abnormality: The system has to be stopped because the control abnormality occurred C940 Engine-CPU abnormality C970 High-voltage transformer abnormality: Leakage of the main charger is detected. CA10 Polygonal motor abnormality: The polygonal motor is not rotating normally.

These are the error cods list. If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/

Hi Zihaalsan, the link below is a user manual showing error H4 and solving the problem... Good luck......CHEERS..
http://olsonbros.com/sharp/support/pdf_trbl/trbl-arm160_m205.pdf
H4. Heat roller low temperature detection...
When the fusing temperature is lower than 150C° after 55sec from the start of warming up. When the warming up complete temperature is not reached in 30sec from reaching 150C°. When the fusing temperature is lower than 100C° after 20sec from ready start. When the fusing temperature is lower than 145C° when printing."
Cause Thermistor abnormality Heater lamp abnormality Thermostat abnormality Control PWB abnormality
Check and remedy Use SIM 5-02 to check the heater lamp blinking operation. When the lamp blinks normally. Check the thermistor and its harness. Check the thermistor input circuit on the control PWB. When the lamp does not light up. Check for disconnection of the heater lamp and the thermostat. Check the interlock switch. Check the power PWB and the lamp control circuit on the MCU PWB. Use SIM 14 to clear the self diagnostic display.

H4 00: Heat roller low temperature detection

When the fusing temperature is lower than 150C° after 55sec from the start of warming up. When the warming up complete temperature is not reached in 30sec from reaching 150C°. When the fusing temperature is lower than 100C° after 20sec from ready start. When the fusing temperature is lower than 145C° when printing."

Cause: Thermistor abnormality Heater lamp abnormality Thermostat abnormality Control PWB abnormality Check and remedy Use SIM 5-02 to check the heater lamp blinking operation. When the lamp blinks normally.

Check the thermistor and its harness. Check the thermistor input circuit on the control PWB. When the lamp does not light up. Check for disconnection of the heater lamp and the thermostat. Check the interlock switch. Check the power PWB and the lamp control circuit on the MCU PWB.

Use SIM 14 to clear the self diagnostic display

Content
Heat roller low temperature detection

Detail
When the fusing temperature is lower than
150C after 55sec from the start of warming
up.
When the warming up complete temperature is
not reached in 30sec from reaching 150C.
When the fusing temperature is lower than
100C after 20sec from ready start.
When the fusing temperature is lower than
145C when printing."

Cause
Thermistor abnormality
Heater lamp abnormality
Thermostat abnormality
Control PWB abnormality

Check and remedy

Use SIM 5-02 to check the heater lamp blinking
operation.
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp does not light up.
Check for disconnection of the heater lamp and
the thermostat. Check the interlock switch.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use SIM 14 to clear the self diagnostic display.

H4 00 Content Heat roller low temperature detection
Detail When the fusing temperature is lower than
150Cafter 55sec from the start of warming
up.
When the warming up complete temperature is
not reached in 30sec from reaching 150C.
When the fusing temperature is lower than
100C after 20sec from ready start.
When the fusing temperature is lower than
145Cwhen printing."
Cause Thermistor abnormality
Heater lamp abnormality
Thermostat abnormality
Control PWB abnormality
Check
and
remedy
Use SIM 5-02 to check the heater lamp blinking
operation.
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp does not light up.
Check for disconnection of the heater lamp and
the thermostat. Check the interlock switch.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use SIM 14 to clear the self diagnostic display

H4 00 Content Heat roller low temperature detection Detail When the fusing temperature is lower than 150C° after 55sec from the start of warming up.
When the warming up complete temperature is not reached in 30sec from reaching 150°.
When the fusing temperature is lower than 100C° after 20sec from ready start.
When the fusing temperature is lower than 145C° when printing."

Cause Thermistor abnormality Heater lamp abnormality
Thermostat abnormality Control PWB abnormality

Check and remedy
Use SIM 5-02 to check the heater lamp blinking

operation.
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control PWB.
When the lamp does not light up.
Check for disconnection of the heater lamp and the thermostat. Check the interlock switch.
Check the power PWB and the lamp control circuit on the MCU PWB.
Use SIM 14 to clear the self diagnostic display.
Good Luck do rate the solution if got help

H4 00 Content Heat roller low temperature detection
Detail When the fusing temperature is lower than
150C° after 55sec from the start of warming
up.
When the warming up complete temperature is
not reached in 30sec from reaching 150C°.
When the fusing temperature is lower than
100C° after 20sec from ready start.
When the fusing temperature is lower than
145C° when printing."
Cause Thermistor abnormality
Heater lamp abnormality
Thermostat abnormality
Control PWB abnormality
Check
and
remedy
Use SIM 5-02 to check the heater lamp blinking
operation.
When the lamp blinks normally.
Check the thermistor and its harness.
Check the thermistor input circuit on the control
PWB.
When the lamp does not light up.
Check for disconnection of the heater lamp and
the thermostat. Check the interlock switch.
Check the power PWB and the lamp control
circuit on the MCU PWB.
Use SIM 14 to clear the self diagnostic display.

H2 00
[Content]
Thermistor open
[Detail]
The thermistor is open.
The fusing unit is not installed.
Cause Thermistor abnormality
Control PWB abnormality
Fusing section connector disconnection
The fusing unit is not installed.
[Check and remedy]
Check the harness and the connector between
the thermistor and the PWB.
Use TC 14 to clear the self diagnostic display.

To enter the serviceman test command mode, press the keys as
follows:
[#] key → [*] key → [C] key → [*] key
Enter 14 Start to clear the code.

H2 PROBLEM CRATED
PLZ GIVE ME SOLUTION

C0510 Upper fusing roller abnormally low temp


replace the thermistor in the fuser