Update 22:10:14: Furthermore, I had now, after a year satisfied, within a short time, no more black printing. Printhead is dirty; since helped no callable menu cleaning (and of course not a full reset, because a reset is a reset elektonisches and no physical cleaning), but only a special "Intensive printhead cleaning", for which I received a manual e-mail from the support. The result is impressive. The guide was z. T. somewhat imprecise and being incomplete at a point only because of previous experience with the reset I came so quickly master. Therefore, I have revised it and pasted into this review with.
The instructions are precise, in the application should have some rest and concentration. Quote Brother: "The" Maintenance "mode is not mentioned for a reason in the User's Guide Incorrect entries in this mode may result in that basic functions of the device are no longer available, therefore, Keep up the instructions carefully..."
Manual Full Reset:
1. on the touch screen should be the normal stand-by condition, possibly produced by pressing the Home button (house icon)
2. Home button (not now lit) approximately 6 sec. Press
Appear> on the display 4 fields
3. Press the 4 (bottom, empty) field about 4 sec. The display
A grid of characters> Display shows
4. type right on the touch screen: * 2864
> Unit goes into maintenance mode, the display above "Maintenance"
Type 5. right on the touch screen: 01
> Appears on the display above "Select 01?"
6. in the display below the double arrow (>>) Tap repeatedly until the
Display, in one of the boxes, the word "Mono" appears
7. Tap on the word "mono"
Top "parameters Init," which starts reset process appears> on the display. Wait now
Type 8. right on the touch screen: 99
> The Maintenance mode is exited, wait for reboot.
Intensive manual printhead cleaning:
Quote Brother: "Please note that this cleaning a larger amount of ink is consumed and should be filled accordingly, the cartridges, perform the cleaning more than once by.."
("Greater amount of ink consumed" is relative, with me the freshly inserted cartridge was then still full level to.)
1. on the touch screen should be the normal stand-by condition, possibly produced by pressing the Home button (house icon)
2. Home button (not now lit) approximately 6 sec. Press
Appear> on the display 4 fields
3. Press the 4 (bottom, empty) field about 4 sec. The display
A grid of characters> Display shows
4. type right on the touch screen: * 2864
> Unit goes into maintenance mode, the display above "Maintenance"
Type 5. right on the touch screen: 76
> Appears on the display above "Cleaning All"
6. Tap twice on the display at the bottom right arrow (>>)
Appear> on the display in the upper box line simple arrows
7. Tap the arrow at the far right often in the upper box line up above the color is named in the display, the print head to be cleaned. Either individual print heads or any additional cleaning at once. Example: Black to be cleaned, "CLEANING BLACK" is selected.
Type 8. right on the touch screen: 4
> Appears on the display above "uINIT__P [selected color]", in our example "uINIT__P BLACK"
9. in the display below the double arrow (>>) Tap repeatedly until the display, in one of the boxes, the word "Mono" appears
10. Tap on the word "mono"
> The machine cleans the print head intensively
11. when calm has returned, type right on the touch screen: 99
> The Maintenance mode is exited, the device switches after a while in the normal standby condition.
I wish all people good luck.
PS: Brother told me on inquiry: "The instructions can thus also perform the J4420.
The Maintenance code is the same for Brother products, only the access to the Maintenance menu varies construction activity for different types of devices. "
