Brother MFC-J3520 Service Manual page 60

Error Code 26

Cannot Print / Replace Ink
Black ink cartridge reaches service life time.
After judging as no ink by the ink remaining sensor, ink discharged for specified times.
Error Code 27
Cannot Print / Replace Ink
B&W 1-sided Print Only / Replace Ink
Yellow ink cartridge reaches service life time.
After judging as no ink by the ink remaining sensor, ink discharged for specified times.
Error Code 28
Cannot Print / Replace Ink
B&W 1-sided Print Only / Replace Ink
Cyan ink cartridge reaches service life time.
After judging as no ink by the ink remaining sensor, ink discharged for specified times.
Error Code 29
Cannot Print / Replace Ink
B&W 1-sided Print Only / Replace Ink
Magenta ink cartridge reaches service life time.
After judging as no ink by the ink remaining sensor, ink discharged for specified times.
User Check
- Replace the ink cartridge.
Step
1 Ink remaining sensor defective
2 Main PCB defective
Cause
Replace the ink refill ASSY.
Replace the main PCB ASSY.
2-26
LCD
LCD
LCD
LCD
Solution
Confidential