Brother MFC640CW - 2 ] Error Codes Contained in MACHINE ERROR X X Messages

9-5 Confidential
[ 2 ] 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 8.4.22.
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 Chapter 8, Section
8.4.7 (that is, press the 3 and 2 keys in the maintenance mode).
Error Code
(Hex)
Symptom Probable Cause Solution
25 Not used.
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
Reload ink cartridges,
referring to the Owner's
Manual.
Ink cartridge PCB
defective
Replace the ink refill
ASSY.
26
27
28
29
Cannot detect ink
cartridges.
Main PCB defective Replace the main PCB.
2A-2F Not used.
Any obstacles on the
travel path of the
head/carriage unit
Clean the CR guide rail
and CR support chassis.
Carriage PCB broken Replace the carriage
PCB.
Head/carriage unit
broken
Replace the
head/carriage unit.
CR encoder strip
stained or scratched
Replace the CR encoder
strip.
Carriage motor broken Replace the carriage
motor.
Main PCB defective Replace the main PCB.
Power supply PCB
defective
Replace the power
supply PCB.
3
*
Head/carriage unit travel
error
Maintenance unit
defective
Replace the maintenance
unit.