Brother dcp115 c machine error af

The encoder strip may be dirty and needs to be cleaned with a lint free cloth. The encoder strip is responsible for relaying the position of the print head to the main pcb. If the encoder strip gets dirty, many different problems can occur. The encoder strip is exposed, which allows grease, paper dust, finger prints, ink, etc. to get onto it. (it's the white strip when you open the scanner cover)
If the machine still errors, the encoder strip needs to be replaced or there may be a problem with the main pcb
OR
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If you are seeing vertical streaks/black lines your primary corona wire is dirty and or the fax scanner may be dirty.
1)To clean the corona wire you take the drum unit and toner cartridge and place it on disposable paper to avoid spilling.
2) Clean the primary corona wire inside the drum unit by sliding the blue tab from right to left several times.
3) Return the blue tab and snap it into the home position.
4) Reinstall the drum unit and toner cartridge.
5) Close the front cover.
Caution: if you do not return the blue tab to the home position it may repeat the black lines.

Here is how to fix error 502.

Rick

» Reposition the Encoder Strip on the A940 All-In-One Printer
To reposition the encoder strip, perform the following steps:

1. Remove the power cord from the unit.
   
2. Lift the lid of the unit, just below the scanner portion of the All-In-One, to expose the inside of the unit where the printer cartridges are located.
   
3. Gently slide the ink cartridge carrier to the middle of the printer.
   

Figure 1: Out-of-position encoder strip

1. Gently move the top part of the printer belt to the right.
   
2. Using your index finger, gently push encoder strip down and then back up to get it back into the slot located on the back of the ink cartridge carrier.
   

Note: There is a small slot that the encoder strip fits into, which is located on the back of the ink cartridge carrier.

While working with the encoder strip, check it for dust or any unclean spots. If any detected, try to clean the strip by wiping it gently with clean cloth.

1. Gently press the strip first to the rear and then forward to ensure that it is seated correctly.
   
2. Manually move the ink cartridge carrier to the left, then to the right to check the positioning of the encoder strip.
   

Figure 2: Correctly seated encoder strip

Note: If the encoder strip moves at all, it has NOT been repositioned correctly.

1. Once the encoder strip has been re-seated, close the lid to the unit.
   
2. Re-connect the power supply to the All-In-One.
   
3. Press the Power button. If the encoder strip was re-seated correctly, the Hardware Error: 502 code will not appear.
   

Eventually all inkjet printers have this problem. When the printer is doing its thing (printing) there is a small amount of vaporised ink floating around the inside of the unit. This vapor collects on everything inside of the printing chamber, including the sensor strip the printer uses for tracking the print heads location. Luckily it's an easy fix, just clean the sensor strip.
To do this, get yourself some rubber gloves (unless you don't mind having Technicolor hands that is) and some lint free paper towels. Put the gloves on, then wet half a sheet of paper towel so its wet, but NOT dripping wet. open the printer and allow the ink heads to travel to middle. When they reach the middle, unplug the machine so the head stays unlocked and out of home position (where the print head goes when not printing). With the printer unplugged and the print head unlocked, locate the thin semi transparent strip running from one side of the printer to the other, it sorta floats there in mid air as its supported on either side by small metal tabs. Starting at the print head home position , gently, clean this strip with the wet paper towel, making sure not to apply too much pressure as you can pull the strip off the hanger tabs or erase the small lines printed onto on the strip. Once the home position section of the strip is cleaned, dry it off and slide the print head into it's home position and clean and dry the rest of the strip. When done, plug in and power up the unit, then do a test print to ensure the problem is fixed.
Hope this helps.

1. Remove the power cord from the unit.
   
2. Lift the lid of the unit, just below the scanner portion of the All-In-One, to expose the inside of the unit where the printer cartridges are located.
   
3. Gently slide the ink cartridge carrier to the middle of the printer.
   

Figure 1: Out-of-position encoder strip

1. Gently move the top part of the printer belt to the right.
   
2. Using your index finger, gently push encoder strip down and then back up to get it back into the slot located on the back of the ink cartridge carrier.
   

Note: There is a small slot that the encoder strip fits into, which is located on the back of the ink cartridge carrier.

While working with the encoder strip, check it for dust or any unclean spots. If any detected, try to clean the strip by wiping it gently with clean cloth.

1. Gently press the strip first to the rear and then forward to ensure that it is seated correctly.
   
2. Manually move the ink cartridge carrier to the left, then to the right to check the positioning of the encoder strip.
   

Figure 2: Correctly seated encoder strip

Note: If the encoder strip moves at all, it has NOT been repositioned correctly.

1. Once the encoder strip has been re-seated, close the lid to the unit.
   
2. Re-connect the power supply to the All-In-One.
   
3. Press the Power button. If the encoder strip was re-seated correctly, the Hardware Error: 502 code will not appear.
   

The carriage did not move
up or down properly.

You need to remove covers, manually move the carriage in home position, manually rotate gears to put scanner in home position, clean gears, use wd40 to neutrallize grease, ink, dust on clutches and gears,...

or replace:
- PR lift shaft - Sheet feed unit
- Main Board ***'y
- Carriage lift sensor unit

How many times does it blink... 2, 3, 12....

2 times Carriage error [5100] An error occurred in the carriage encoder signal. - Carriage unit (QM2-3753)
- Timing **** film (QC1-9542)
- Logic board (QM2-3827)
- Carriage motor (QM2-3872)
3 times Line feed error [6000] An error occurred in the LF encoder signal. - Timing sensor unit (QM2-3878)
- Timing **** disk film (QC1-9597)
- Feed roller (QL2-1407)
- Logic board (QM2-3827)
- Paper feed motor (QM2-3873)
4 times Purge cam
sensor error
[5C00] An error occurred in the purge unit. - Purge unit (QM2-3754)
- Logic board (QM2-3827)
5 times ASF (cam)
sensor error
[5700] This error takes place when feeding paper from the
ASF after an error occurred in the ASF cam sensor.
- Sheet feed unit (QM2-3762)
- ASF_PE sensor board (QM2-3877)
- Logic board (QM2-3827)
6 times Internal
temperature
error
[5400] The internal temperature is not proper. - Logic board (QM2-3827)
- Carriage unit (QM2-3753)
7 times Ink absorber
full
[5B00,
5B10,
5B01,
5B11]
The ink absorber is full.
Error codes:
Overseas:
5B00: Main ink absorber
5B10: Borderless-print ink absorber
Japan:
5B01: Main ink absorber
- Ink absorber kit (QY5-0178)
1-5
Note: Before replacement of the logic board ***'y, check the ink absorber counter value (by service test print or EEPROM information
print). If the counter value is 7% or more, also replace the ink absorber kit (QY5-0178) when replacing the logic board ***'y, or
register the current ink absorber counter value to the replaced new logic board instead. [See 3-3. Adjustment / Settings, (9)
Service mode, for details.]
2-3. Other Error Messages
5B11: Borderless-print ink absorber
8 times Print head
temperature
rise error
[5200] The print head temperature exceeded the specified
value.
- Print head (QY6-0070)
- Logic board (QM2-3827)
9 times EEPROM
error
[6800] A problem occurred in writing to the EEPROM. - Logic board (QM2-3827)
10 times VH monitor
error
[B200] The internal temperature exceeded the specified
value.
- Print head (QY6-0070)
- Carriage unit (QM2-3753)
- Logic board (QM2-3827)
12 times PG position
error
[5C10] An error occurred in the PG motor during purging
operation.
- Sheet feed unit (QM2-3762)
- Logic board (QM2-3827)
- Purge unit (QM2-3754)
15 times USB Host
VBUS
overcurrent
[9000] The USB Host VBUS is overloaded. - Logic board (QM2-3827)
19 times Ink tank
position sensor
error
[6502] None of the ink tank position is detected. - Spur base unit (QM2-3750)
- Logic board (QM2-3827)
20 times Other
hardware error
[6500] The PCI bus error is detected by the ASIC. - Logic board (QM2-3827)
22 times Scanner home
position error
[5010] The scanner unit cannot detect the home position, or
the scanner unit warming-up is not performed
properly at power-on.
On the LCD, "Scanner is not operating correctly." is
displayed.
- Scanner unit (QM2-3775)
Alarm and Power
LEDs lit
ROM error,
RAM error
A flash ROM or RAM checksum error occurred at
hard-power-on.
- Logic board (QM2-3827)

Re-position the Encoder Strip on your all in one Printer

To re-position the encoder strip, perform the following steps:

1. Remove the power cord from the unit.

2. Lift the lid of the unit, just below the scanner portion of the All-In-One, to expose the inside of the unit where the printer cartridges are located.

3. Gently slide the ink cartridge carrier to the middle of the printer.

4. Gently move the top part of the printer belt to the right.

5. Using an index finger, gently push encoder strip down and then back up to get it back into the slot located on the back of the ink cartridge carrier.

NOTE
NOTE: There is a small slot that the encoder strip fits into, which is going to be located on the back of the ink cartridge carrier.

6. Gently press the strip first to the rear and then forward to ensure that it is seated correctly.

7. Manually move the ink cartridge carrier to the left, then to the right to check the positioning of the encoder strip.

8. Once the encoder strip has been re-seated, close the lid to the unit.

9. Re-connect the power supply to the All-In-One.

10. Press the Power button. If the encoder strip was re-seated correctly, the Hardware Error: 502 code will not appear.

See attached pictures, one for an out or place encoder strip, the other for a well placed strip.

Other faults that can bring up this error is a carriage rail that needs cleaning and oiling (so you might want to do that while your inside the thing), and also obstructions to the paper ways. Try removing paper jams, and put the printer upside down to shake loose anything that might jam the mechanism.

New spill valve!

Re-position the Encoder Strip on your all in one Printer To re-position the encoder strip, perform the following steps: 1. Remove the power cord from the unit. 2. Lift the lid of the unit, just below the scanner portion of the All-In-One, to expose the inside of the unit where the printer cartridges are located. 3. Gently slide the ink cartridge carrier to the middle of the printer. 4. Gently move the top part of the printer belt to the right. 5. Using an index finger, gently push encoder strip down and then back up to get it back into the slot located on the back of the ink cartridge carrier. NOTE NOTE: There is a small slot that the encoder strip fits into, which is going to be located on the back of the ink cartridge carrier. 6. Gently press the strip first to the rear and then forward to ensure that it is seated correctly. 7. Manually move the ink cartridge carrier to the left, then to the right to check the positioning of the encoder strip. 8. Once the encoder strip has been re-seated, close the lid to the unit. 9. Re-connect the power supply to the All-In-One. 10. Press the Power button. If the encoder strip was re-seated correctly, the Hardware Error: 502 code will not appear. See attached pictures, one for an out or place encoder strip, the other for a well placed strip. Other faults that can bring up this error is a carriage rail that needs cleaning and oiling (so you might want to do that while your inside the thing), and also obstructions to the paper ways. Try removing paper jams, and put the printer upside down to shake loose anything that might jam the mechanism. Good luck!