Question about Brother MFC 420CN All-In-One InkJet Printer

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Machine Error 4F

Hi, I did hit menu, black start (mono) & then up arrow 4x. I get this message - Machine Error 4F.

Any ideas much appreciated!

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What is PH?

Posted on Dec 13, 2008

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Yes. Very sorry: ph is defective and needs replacing.

Posted on Apr 07, 2008

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1 Answer

Message comes as unable to clean ... cartridges are brand new no paper jam in the system the model is DCP 340 CW


Unplug the printer from power cord.Press and hold the "menu" button, then plug the device.You'll see on the LCD screen a "machine error" code.If this code is 40,41,49 or 4F the print head is defective.If the
error is 50 or 51 there is error in Purge unit and printer require service.If the error is 48 - defective print head cable or circuit board.If the error is 46 the waste ink tank is full.Follow this:
1. Pres 'menu', 'mono start' then 'menu' one by one...
2. Press the arrow up or down to go to 'maintenance 80'.
3. Press 'mono start' several times to go to 'Purge'. Finding the PURGE will show some numeric value
which is Iassume the number of times the printer had cleaned.
4. Press 'arrow up' key and scroll for number "2" then press "set".Do the same for numbers 7, 8 and 3.After you have entered this combination, the purge numeric value will be reset to 00000.
5.Restart printer

Nov 16, 2009 | Brother DCP-340CW All-In-One InkJet...

1 Answer

Printer will not print


you should manually reset your PURGE COUNTER to ZERO so that your printer will work again. Follow these steps:

Unable to Clean error means purge counter is already full. Please refer below for the instructions on troubleshooting your machine.


1. To enter MAINTENANCE Mode: Press MENU, MONO START, 4X on ARROW UP. (within 2 seconds).
2. Using arrow up button look for the following:
a. 8 then press SET
b. 0 then press SET
3. Using MONO START, just press it until the word "PURGE XXXXX" comes out.
4. Using arrow up button look for the following:
a. 2 then press SET
b. 7 then press SET
a. 8 then press SET
b. 3 then press SET
This is to reset the purge counter. Then press stop/exit
5. Using arrow up button look for the following:
a. 0 then press SET
b. 1 then press SET (To reset unit)
a. 9 then press SET
b. 9 then press SET (To exit Maintenance mode)

In some brother models SET = OK

Nov 03, 2009 | Brother MFC 210C All-In-One InkJet Printer

1 Answer

Print error


Unplug the printer from power cord.Press and hold the "menu" button, then plug the device.You'll see on the LCD screen a "machine error" code.If this code is 40,41 or 4F the print head is defective.If the error is 50 or 51 there is error in Purge unit and printer require service.If the error is 46 the waste ink tank is full.Follow this:
1. Pres 'menu', 'mono start' then 'menu' one by one...
2. Press the arrow up or down to go to 'maintenance 80'.
3. Press 'mono start' several times to go to 'Purge'. Finding the PURGE will show some numeric value
which is Iassume the number of times the printer had cleaned.
4. Press 'arrow up' key and scroll for number "2" then press "set".Do the same for numbers 7, 8 and 3.
After you have entered this combination, the purge numeric value will be reset to 00000.

Oct 28, 2009 | Brother DCP117 All-In-One InkJet Printer

3 Answers

Unable clean error code 46


Unable to Clean or Machine Error 46 means your purge counter is already full. Please refer below for the instructions on troubleshooting your machine.
1. To enter MAINTENANCE Mode: Press MENU, MONO START, 4X on ARROW UP. (within 2 seconds).
2. Using arrow up button look for the following:
a. 8 then press SET or OK
b. 0 then press SET or OK
3. Using MONO START, just press it until the word "PURGE XXXXX" comes out.
4. Using arrow up button look for the following:
a. 2 then press SET or OK
b. 7 then press SET or OK
a. 8 then press SET or OK
b. 3 then press SET or OK
This is to reset the purge counter. Then press stop
5. Using arrow up button look for the following:
a. 0 then press SET or OK
b. 1 then press SET or OK (To reset unit)
a. 9 then press SET or OK
b. 9 then press SET or OK (To exit Maintenance mode)

Aug 21, 2008 | Brother DCP-350C InkJet Printer

1 Answer

Unable to print


press menu then start mono then 4x arrow-up. machine will be in maintanance mode. what error code does the machine display?

to leave the maintanace mode simply unplug machine from power and reconnect again.

Nov 06, 2007 | Brother DCP-110C All-In-One InkJet Printer

1 Answer

Can't get color to print-black works fine.


You are on the right way. Press MENU then the blue START MONO Button which normally starts copies in black and white modus. After that press the round button (which can be normally pushed to four sides l/r up/down) UP four times. Now you should be in maintenance modus. Follow the procedure as mentioned before. If there are more questions post it here.

Sep 29, 2007 | Brother MFC 420CN All-In-One InkJet...

3 Answers

Unable to init error message and and machine error 4f


i can not print any documents it keeps coming up as Init unable 4f please help ?

Sep 27, 2007 | Brother MFC 210C All-In-One InkJet Printer

1 Answer

Wont Print


Stell, press menu then start mono (b/w) then 4x arrow-up button. What error code does the machine display?

Sep 24, 2007 | Brother MFC 420CN All-In-One InkJet...

3 Answers

MFC-210C displaying "Unable to Print"


press menu then start mono (b/w) then 4x arrow-up-button. What error code does the machine display?

Sep 24, 2007 | Brother MFC 210C All-In-One InkJet Printer

1 Answer

Brother MFC-210C stuck in "please wait maintenance"


Press menu then start mono (b/w) then 4x arrow-up-button. Machine will be in maintenance-mode: What error code does the display show off?

Sep 24, 2007 | Brother MFC 210C All-In-One InkJet Printer

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