Brother DCP375CW Service Manual page 143

Error Code
Symptom
(Hex)
43 The head thermistor has
been opened or shorted
abnormally.
44 The temperature of the
print head driver has
risen abnormally.
The head driver chip
temperature sensor in
the head driver detects
abnormally high
temperature.
45 Not used.
46 The number of
performed purge
sequences has reached
the limit.
The ink absorber box
may be filled with
drained ink.
The number of flushing
operations has reached
the limit.
The flushing box may be
filled with drained ink.
47 Not used.
48 Weak connection of the
head flat cables.
Probable Cause
Head flat cables not
connected correctly
Head flat cables broken
Carriage PCB defective
Main PCB defective
Head property parameters
incorrect in the EEPROM
Air bubbles in the head/
carriage unit
Head flat cables and
carriage-head flat cable not
connected correctly
Head flat cables broken
Carriage-head flat cable
broken
Head/carriage unit broken
Main PCB defective
Purge counter overflown
Flushing counter overflown
Head flat cables or carriage-
head flat cable broken or not
connected
4-11
Solution
Correct those flat cables.
Replace the carriage PCB
ASSY.
Replace the main PCB.
Enter the correct parameter
values.
Perform the initial purge.
Correct those flat cables.
Replace the carriage PCB
ASSY.
Replace the head/carriage unit.
Replace the main PCB.
Replace both the ink absorber
box and flushing box and reset
their counters. (When you need
to replace the ink absorber box
or flushing box, replace both.)
(Refer to page 7-39 or page 9-
57.)
Correct the connection of the
head flat cables.
Replace the carriage PCB
ASSY.
Replace the head/carriage unit.
Replace the main PCB.
Confidential