Brother MFC-9420CN Service Manual page 270

Error Code
(Hex)
D0-DF Modem error.
E0-E3 Not used.
E4 Out of recording paper.
(Not used.)
E5 Not used.
E6 Write error in EEPROM.
E7 Not used.
E8 Data scanning error during
transmission.
E9 Not used.
EA Document removed at phase
B.
EB-ED Not used.
EE-F2 Not used.
F3, F5 Internal software error.
(Not used.)
F4 Not used.
F6 PC interface error. (Not used.)
F7 Not used.
F8 Battery connection error
F9-FE Not used.
FF Memory management error.
(Not used.)
Symptom
9 - 1 4
Probable Cause
Main PCB defective
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Main PCB defective
CIS defective
Main PCB defective
Document front sensor
actuator caught on the
surrounding parts
Sensor PCB defective
Main PCB defective
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---
Disconnection
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Solution
Replace the main PCB.
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Replace the main PCB.
Replace the scanner cover
(scanner unit).
Replace the main PCB.
Correct the surrounding
parts on which the
actuator caught.
Replace the sensor PCB.
Replace the main PCB.
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---
Connect the battery
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