Question about Brother MFC 8420 All-In-One Laser Printer

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Error codes I am having trouble with my MFC8420, it displayes error code 6A. Can some one tell me what it is..

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Re: Error codes - Brother MFC 8420 All-In-One Laser Printer Printers & Copiers

Error machine 6b

Posted on Feb 06, 2010

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What's your question? My Sharp photocopier AR-161 display E7. and can't make copies what is the problem?

Here is a list of error code meanings for your device. You need to find out the sub code should be E7-?? To find the root cause. Sharp AR 161 Error Codes Trouble Codes


E7 03 LSU trouble
E7 04 CCD white level trouble
E7 05 CCD black level trouble

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Brother MFC 8440 showing error code MACHINE ERROR 6A or 6E


Both errors are signalling a temperature problem in fuser assembly.

The solution below applies to several Brother models. Depending on the model, the reset procedure may be different.

Brother Error 6A means that the thermistor located in the fuser assembly did not detect that required temperature had been reached in valid time.

First you can try entering in maintenancemode and clearing the error. If that does not work, that means that the thermistor, the lamp, or the whole fuser assembly must be replaced.

Error 6E is similar. 6E is diplayed when thermistor detect that the fuser temperature is not going up at least at 2°C every for 5 seconds.

As for 6A, first reset the code. If the error does not clear the fault can concern the thermistor, the fuser lamp or the power supply to the fuser assembly.

To reset the error code follows these steps:

1. Press MENU *,2,8,6,4 . Press keys within 2 seconds.
2. The machine beeps and display shows “maintenance".
3. Look for Init or Reset on menu, and enter the corresponding parameter.
4. To exit press 99.

This procedure above usually works on MFC-8xxx model. On other models you may need to do the following:

1) Unplug machine.
2) Hold down menu key. Plug in machine.
3) Release menu key.
4) Enter 91
5) Enter 99


1) Disconnect the printer power cord.
2) Hold down the menu key while plugging in machine at same time.
3) Enter 99 while holding down menu key
4) After menu says " wait" push the stop/exit button to get out of the maintenance mode.

If that does not work, it means that the fuser assembly must be replaced. Here the part for MFC-8440: Genuine Brother Mfc8440 Fuser Assembly.


on Apr 08, 2010 | Brother MFC 8440 All-In-One Laser Printer

1 Answer

How to reset error code d370 on konika minolta c450 machine

1. Touch the following code on the trouble code display screen.
(buton) Stop 0 7 1 3 9
2. [*] will be displayed on the trouble code screen.
3. Touch [*].
4. The screen will be shifted to the data restoration screen to perform data restoration.
• When the restoration is performed in a short time, data restoration screen may not
be displayed.5. Check the message which indicates that the data restoration was successfully conducted.
Turn Main power OFF, and wait for ten seconds or more to turn it back ON


Jan 12, 2015 | Minolta Printers & Copiers

1 Answer

Konica Minolta biz hub c550 error code c-EEE3 Help please

To reset the malfunction code press follow keys:
Turn OFF the copier,press and hold pressed the Utility key and turn ON the copier.Wait will apaire the Trouble reset message on the display and release the Utility key.Touch the message and turn OFF the copier.Wait 1 minutes and turn ON.Good luck.

Mar 21, 2013 | Konica Minolta Printers & Copiers

1 Answer

I have a Brother DCP 8020 Multi printer. Im getting machine error code A6. After replacing the fuser

This is what is written in my service manual for Error Code A6:

Error code 6A
Print Unable 6A
Turn the power off and then back on again.
Fuser unit failure (The side thermistor does not detect 60degreesC within the specified time.)

Dec 05, 2012 | Brother DCP-8020 Laser Printer

1 Answer

Print unable 6A is displaying on the printer screen of DCP-7055 3 in 1 Brother printer, Pse help me

The 6A error is a fuser problem. It is temperature related, and is not heating at all or quickly enough. Also, it can be cause from power fluctuation.

to qoute the manual

Error 6A:
Heater warming up timeout error
(heater does not reach 60C within 11secs)

Thermistor Assy
Halogen Lamp.

Before you purchase a new one though you might want to try a reset as it sometimes clears the error if it is not physical in nature (faulty part)

As follows - Press Menu,*,2,8,6,4 (must be done inside two seconds). It should say maintenance in the display after a short delay. press 91 (to reset the error data), then 99 (to exit maintenance mode).

If the error returns after a power off and on then you will need to replace the fuser. It is user replacable via the rear cover. (should be supplied with instructions)

Read more: I have an Error "Print Unable 6A" on my Brother MFC-9840CDW. - JustAnswer

Sep 06, 2012 | Brother Printers & Copiers

1 Answer

How to clear error code c 3421 on konica bizhub c253

C-3421 = Fusing heaters trouble
To Reset:
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 error code returns a technician is needed to replace fuser section. Call local dealer with error code and tell them to make sure a tech brings a fuser assembly.

May 19, 2010 | Konica Minolta bizhub C250 All-In-One...

3 Answers

Machine error code 6A what that means?( Brother mfc 8440)

I argued on the phone with a BROTHER REP. that he should give the codes and directions to reset the machine, he refused time and time again, saying that this means physical damage to the machine an re-setting it is impossible to help, but i insisted, and it did fix the problem and the error went away.
here is what you should do, unplug for 10 sec. press and hold on the menu key while you plug it back in untill you see the screen "parameter init" press 99 and wait, this is what i did and it fixed the problem !!

Jan 26, 2010 | Brother MFC-8440 All-In-One Laser Printer

1 Answer

EP3050 error code C004A

A C004a code is a error code with a fan in the copier. It is either not working or is making a noise. You may be able to hear the affected fan and try to lubracate it. There is a Trouble reset botton behind the cover of the display contrast knob. Its on the inside front cover above the fixing unit. Try to rest the code there first. Good Luck

May 27, 2008 | Printers & Copiers

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