Question about Brother IntelliFAX 4100 Laser Fax

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Error 77 message

We lost power in the office yesterday and cannot clear an error 77 message

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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.

Posted on Jul 22, 2010

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Posted on Jan 02, 2017

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Try this one:

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Error 77


I just got the same message on my mfc-8500 after a brief power outage.

I opened the front panel, removed the toner and closed the panel. The printer tried to warm up and then said to open the panel door. I then opened the door, inserted the toner, closed it and the machine error was cleared.

Perhaps all you need to do is remove the toner and put it back in.

Oct 06, 2010 | Brother FAX4100E

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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

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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.

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Message on machine states error 77, unplug and call brother?


Error 77 basically means- Heater thermistor short circuit. However, the message is sometimes incorrectly shown. You can try this- power off the machine, take out the cartridge, close the door and power up. The machine should notice either the toner or the front door is not in place. Now open the door and place the toner. This might solve the problem. You can also try to soft reset the printer. If none of these works, you might have to change the thermistor.

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The power went out at the office. when the power was restored my brother intellifax 5750e will not work. there is an error 77 message displaying on it's panel.


you can try this. press "menu/set" " *2864 " within 2 secs. then press "01" and wait for a few seconds until "para init" goes away. then press "99" and when you see "please wait" unplug machine. wait for 15 secs. and plug back in and see if it comes up. if not, then you have a hard error and must have serviced.
good luck,
razors

Mar 03, 2009 | Brother IntelliFAX 5750e Laser Fax

2 Answers

Error 77 is apprearing


Unplug the unit.
Hold down the menu key while plugging back in / powering up.
When finished initializing, hit 99.
Wait to status comes back and hit 91.

This supposedly happens due to a power surge or outage.
If this doesn't work for you try reversing the numbers above.
I have a bad memory, it might be 91 first then 99 but, you definately have to hold down the menu key.


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