Error Codes Contained In "Machine Error X X" Messages - Brother MFC620CN Service Manual

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Error codes contained in "MACHINE ERROR X X" messages

If the LCD shows the "UNABLE TO PRINT" message, you can display the detailed error code
following the MACHINE ERROR by using maintenance-mode function code 82 described in
Chapter 8, Section 8.5.22.
NOTE: When checking a PCB as instructed in the "Check:" column, also check its harness.
NOTE: To check sensors, use maintenance-mode function code 32 described in
(that is, press the 3 and 2 keys in the maintenance mode).
8.5.7
Error Code
(Hex)
25
26
27
28
29
2A-2F
3*
Symptom
Not used.
Cannot detect ink
cartridges.
Not used.
Head/carriage unit travel
error
Probable Cause
The ink has run out or
the ink cartridge is not
set into place.
26: Black ink
27: Yellow ink
28: Cyan ink
29: Magenta ink
Ink cartridge PCB
defective
Main PCB defective
Any obstacles on the
travel path of the
head/carriage unit
Carriage PCB broken
Head/carriage unit
broken
CR encoder strip
stained or scratched
Carriage motor broken
Main PCB defective
Power supply PCB
defective
Maintenance unit
defective
9 - 3
Chapter 8, Section
Solution
Reload ink cartridges,
referring to the Owner's
Manual.
Replace the ink refill
ASSY.
Replace the main PCB.
Clean the CR guide rail
and CR support chassis.
Replace the carriage
PCB.
Replace the
head/carriage unit.
Replace the CR encoder
strip.
Replace the carriage
motor.
Replace the main PCB.
Replace the power
supply PCB.
Replace the maintenance
unit.
Confidential