Question about Brother IntelliFAX 2800 Laser Fax

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Machine error 77

When the fax machine is powered up I receive the machine error 77.

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The fuser unit (fixing unit) not registering heat requirement. The heat roller or the thermistor sensor is defective.Remove fuser and check roller, if good replace sensor, reinstall fuser and reset machine.

Posted on Aug 18, 2008

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Require user manual for panasonic fax model KX FT 77


I have a problem with the fax machine in question is panasonic kx ft77 . When receiving a fax error expel warm up and stop receiving the document. Or does anyone know what the problem is and how to fix it ? Thanks in advance

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Error Code 77 on brother 4100 fax intelifox business class


( 76 Heater harness disconnected or broken. Or heater thermistor harness
disconnected or broken when the power is turned on, the front cover is
opened and closed, or the machine exits from the sleep mode. )
( 77 Power turned off and on at the occurrence of error 76 or 78. )
( 78 Heater thermistor short-circuited. Or heater thermistor harness disconnected
or broken when the machine is on standby. )

Nov 05, 2010 | Brother IntelliFAX 4100 Laser Fax

1 Answer

Machine is on and showing "error message #77 and says to unplug machine and call dealer. What is error 77?


Error #77 refers to a mechanical problem, but I'd say about 7 times out of 10 it's a mistake. Fortunately, Brother fax machines have override commands :). Try this:

1. Turn the power off and unplug the power source.
2. Press and hold the menu button and plug in the power source (don't let go of the menu button!).
3. Hold the menu button for 5 seconds after plugging in the power source.
4. Release the menu button and press "91"

5. If the screen still shows the error code, press "99".

Hopefully this will override the error and you can get back to work :) .

Hope this helps! Good luck!

Aug 30, 2010 | Brother IntelliFAX 2800 Laser Fax

1 Answer

Error 77 message


The 77 error is caused by a fuser temperature sensor. The following steps can be used to possibly reset the Intellifax 4100 77 error.

1. Unplug machine then wait 15-20 minutes.
2. Hold down menu key. Plug in machine.
3. Release menu key at maintenance message.
4. press 91 then set button
5. press 99 then set button
6. Machine will warm up.
7. Press Reports key, then press 1. This will test if the machine can
print.
If these steps do not reset the error the thermal fuse would have to be replaced by a repair technician.

Jul 22, 2010 | Brother IntelliFAX 4100 Laser Fax

1 Answer

Machine error 77


Hello there, in a situation like this the best thing for you to do is to call Brother customer service at 800-284-4329 and explain the problem.
Thank you

Jul 16, 2010 | Brother IntelliFAX 2800 Laser Fax

1 Answer

MACHINE ERROR 77


You have a defective fuser unit, not heating up.

Jun 22, 2010 | Brother IntelliFax-4100e Fax

1 Answer

Fax machine Error 77 What do we do?


This is a Heater thermistor short circuit, to reset it...
  1. Unplug the power, press and hold the menu button, plug in the power
  2. (hold the menu button for 5 seconds after power is plugged in). Release
  3. the menu button, now press 91, if the display still shows the error,
  4. press 99.
Most people just ignore it, I suppose eventually if the thermoster is malfunctioning you could burn the printer out. But from a cost perspective I don't think it's worth replacing.

Jun 10, 2010 | Brother IntelliFax-4100e Fax

1 Answer

Error 77


Error 77 is fuser error . Shut off the power for 20 minutes . If that didn't reset the unit , then you need a new part . Call the local dealer to ask about new part price .

please rate !

Apr 13, 2010 | Brother IntelliFAX 2800 Laser Fax

2 Answers

Machine Error 76


Machine error 76 is a bad fuser lamp. Machine error 78 is a bad thermistor. Machine error 77 means you hade either a Machine error 76 or Machine error 78 and turned the machine off.
Sometimes the machines will give a false code and can be reset. Unplug machine. Hold down the Menu key while powering back up. You should still get a Machine error message. Enter the number 9...The display should change to Maintenance 9 then enter 1. The Machine error will return. Enter 99 and then make a test print. If you get either a machine error 76 or 78 you will need to have service done on your machine to have either the lamp or thermistor replaced, and depending on the usage of the machine, it might not be a bad idea to replace the entire fuser.

Jan 18, 2008 | Brother IntelliFAX 2800 Laser Fax

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