2 ] Error Codes Contained In "Machine Error X X" Messages - Brother MFC990CW Service Manual

Inljet mfc/dcp
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[ 2 ] Error codes contained in "MACHINE ERROR X X" messages

Using Function code 82 (described in
error in the format of "MACHINE ERROR XX." The XX represents one of the error codes
listed in this section.
XX in error messages "Unable to Clean XX" to "Unable to use Phone XX" (for models with
color LCD) and "Clean Unable XX" to "Scan Unable XX" (for models with monochrome LCD)
given in item [ 1 ] also represents one of these error codes.
Note: When checking a PCB as instructed in the "Solution" column, also check its harness.
Note: To check sensors, use Function code 32 described in
press the 3 and 2 keys in the maintenance mode).
Error Code
(Hex)
20
Cannot identify the ink
21
cartridge loaded because
22
the signal values
23
detected by the
corresponding ink empty
sensor and ink cartridge
detection sensor are
different from the
specified values.
24, 25
Not used.
Chapter 9, Section
Symptom
Ink cartridge not loaded
correctly
20: Black ink
21: Yellow ink
22: Cyan ink
23: Magenta ink
- Ink cartridge loaded after
the ink cartridge cover has
been left open for 10 min-
utes or more
- Ink cartridge replaced
when the power is OFF
- Ink cartridge loaded very
quickly
- Ink cartridge halfway
taken in and out
Ink cartridge partially broken Replace the ink cartridge.
The ink cartridge loaded is
not the specified one
Ink empty sensor defective
Ink empty sensor PCB
defective
Main PCB defective
9.1.4.31) displays the most recent
Chapter 9, Section 9.1.4.9
Probable Cause
4-8
Solution
Reload the corresponding ink
cartridge.
Load the specified ink
cartridge.
Replace the ink refill ASSY.
Replace the main PCB.
Confidential
(that is,

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