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No display - wont start up

Wont power up - checked all fuses

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  • Duplo Master
  • 1,362 Answers

1-check the main door switch,
2-check power supply

Posted on Sep 08, 2008

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6ya6ya
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Posted on Jan 02, 2017

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3 Answers

Bizhub c 450 error c 3752


Fuser Heat Error. Sometimes this code can be cleared by using the reset procedure outlined below. If the code returns then you will need to have the unit serviced.
Reset Procedure: 1. Turn main power switch OFF.
2. Turn main power switch ON while pressing the Menu/Select key.
3. Keep pressing the Menu/Select key until the LED turns OFF on the control Panel.
4. Check to make sure that "Trouble Reset" is displayed on the control Panel
after LED turns OFF.
5. Pressing the Menu/Select key.
6. Check to make sure that "OK" is displayed and the it has been reset.
7. Turn main power switch OFF and ON again, and make sure that the machine properly
starts.

Apr 08, 2014 | Konica Minolta bizhub 350 All-In-One Laser...

1 Answer

Can power on


Check the fuses.Blown fuse conditions
FU1 - 6,3A Doors/covers open is displayed.
FU2 - 6,3A Doors/covers open for the finisher is displayed.
FU3 - 4A paper end condition.
FU4 - 6,3A SC 121 is displayed.
FU5 - 6,3A one of SC302 or SC403 or SC405 is displayed.
FU101 - 15A no response.
Fu 102 - 8A no response.
FU103 - 1A normal operation,optional heaters do not work.
If FU or 102 is the problem,verify the main motor and the fusing unit heater lamps and thermofuses.After change the problematic fuse removal the fusing unit and turn ON the copier.

Apr 18, 2013 | Ricoh Aficio 450 Copier

1 Answer

Please how do I clear the H 4 display on my Sharp AL 2020 copier machine


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.

Mar 06, 2013 | Office Equipment & Supplies

1 Answer

I have sharp 5316 it's giving error 4h


heater lamp&fuse ( broken heater)
RESET:clear -interrupt -0-interrupt
and 14 start-15 start

try the simulation about 5 times if not. u have to check fusing unit. so disconnect the two cables, turn it off then disconnect the power reconnect the cables put the power then on. so u have to do the simulation respectively..

4 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.

May 11, 2010 | Sharp AR-5316 Advanced Digital Imager...

1 Answer

H4 error code


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.

May 04, 2010 | Sharp AL-1641CS Color Copier

3 Answers

Sharp copier SF-2025 displays an error code H4


H4, not heating up, replace fuser unit complete or work with hivolts and replace an expensive and tricky lamp/thermister . wont be cheap.

. Here use the reset for it first, sometimes power surges can just flip them out but most times will just reappear shortly after reset, indicating the want of a working fuser assembly

Fuser (not fuse) is the hot bit with rollers at paper exit if code fails it needs to be replaced, wont come cheap no matter how you approach it

C-Exposure key-C-Exposure key-14-copy key to clear ... but it will come back I bet...

Nov 03, 2009 | Sharp SF 2020 Copier

1 Answer

Display H and than 4.. please solve my problem with thanks.


call sercice and tell them that there is a problem with the Heat roller low temperature detection.


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.

May 06, 2008 | Toshiba e-Studio 161 Copier Copier

1 Answer

When I switch on the copier display H and than 4.. please solve my problem with thanks.


call sercice and tell them that there is a problem with the Heat roller low temperature detection.


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.

May 05, 2008 | Toshiba e-Studio 161 Copier Copier

1 Answer

"No Power"


I've never known anyone that has "just changed a fuse" in a HP and have it spring back to life, I do know if a fuser or thermal fuse go you would still have display, I would check the switch, display connections then maybe pull the power supply out and check for damage, but in reality if got down to power supply one would write it off.

The fuser not coming on isn't a problem, missing supply voltages from power supply seem more likely.Check if fan powers on at start up.

Nov 17, 2007 | HP LaserJet 5m Printer

5 Answers

Error Message C3451


It is a fuser error.

Try resetting. To reset a Rank A error follow these steps:

1. Turn OFF the Main Power Switch.
2. Turn Main Power Switch ON while pressing the Utility/Counter key.
3. Touch [Trouble Reset].
4. Check to make sure that [OK] is displayed and the it has been reset.
5. After turning off the Main Power Switch, turn it on again more than 10 seconds after and check if the machine starts correctly.
If the error recurrs then do the following:
1 Check the Fusing Unit for correct installation (whether it is secured in position).
2 Check the Fusing Unit, PWB-M and PU1 for proper connection and correct or change as necessary.
3 Change Fusing Unit
4 Change PWB-M
5 Change PU1

Oct 02, 2007 | Konica Minolta bizhub C250 All-In-One...

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