Question about Brother IntelliFAX 4100 Laser Fax

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Brother intellifax 4100e

Error code 77 occured after machine was moved from one room to another

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Hi, the error code refers to the heater thermistor short circuited or heater thermistor disconnected or broke when the power was turned on, front cover is open or closed or when the machine exits from sleep mode.I hope this help!!

Posted on Dec 04, 2007


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Posted on Jan 02, 2017


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Does the machine actually answer the incoming call? If so does it give an error code? Are you using the genuine brother line lead? Finally make sure the line lead is plugged into the "line" socket and not the "tel" socket.

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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.

Jun 10, 2010 | Brother IntelliFax-4100e Fax

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Intellifax 4100e is not printing faxes says printing online? Or it stops in the middle of a fax and says same.

try parameter reset function (this will change some settings back to default)
hit these keys all within 2 seconds!!!
function (or menu) * 2 8 6 4
should say maint.mode: then hit
"9 1 set" and then "9 9 set" That will usually clear out any brainfarts in the system. This also works for code 77 errors (9 9 set is the actual parameter reset)

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Error 11...what does it mean?

Error 41 means there is a major problem with the printhead, usually
requires a print head replacement. My advice is to take it to a
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warranty then it is cheaper to purchase a new, non Brother model. If you have been using non-Brother cartridges or refills, they can have too much water in them and it erodes the print head after a while. Usually just after warranty has expired!

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