Brother MFC990CW Service Manual page 148

Error Code
Symptom
(Hex)
BE-DE Not used.
DF, E0 Modem error.
E1 Not used.
E2 Wired LAN MAC
address not registered.
E3 Wireless LAN MAC
address not registered.
E4 Not used.
E5 Write error in EEPROM
on the cordless PCB.
E6 Write error in
EEPROM.
No communication
E7
between cordless PCB
and cordless handset.
E8, E9 Not used.
EA Document removed at
*1
phase B.
*1 For MFC only
*2 For wired LAN-enabled models
*3 For wireless LAN-enabled models
*4 For models with cordless handsets
Probable Cause
*1
SDAA chip defective
Main PCB defective
MAC address not written
*2
into the main PCB correctly
WLAN PCB defective
*3
The base ID code and
*4
cordless handset ID code
registered are mismatched.
Main PCB defective
The base ID code and
cordless handset ID code
*4
registered are mismatched.
Document front sensor
actuator caught on the
surrounding parts
Document front sensor
defective
Main PCB defective
4-23
Solution
Turn the machine off and then
on.
Replace the main PCB.
Replace the main PCB.
Replace the WLAN PCB.
Reregister the cordless handset
ID code.
Replace the cordless handset.
Replace the cordless PCB.
Replace the main PCB.
Reregister the cordless handset
ID code.
Replace the cordless handset.
Replace the cordless PCB.
Correct the surrounding parts
on which the actuator caught.
Replace the document front
sensor PCB.
Replace the main PCB.
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