Brother MFC-J3520 Service Manual page 46

Error
Code
40 Casing internal thermistor defective
Casing internal thermistor detects -20 °C or less and 80 °C or more
when power is ON.
42 Head voltage fails to be turned OFF.
43 Head thermistor defective
Head thermistor detects -20 °C or less and 80 °C or more when power
is ON.
44 Head driver IC detects abnormal temperature during operation or
standby.
46 Purge count or flushing count overflown.
48 Head flat cable detected to be not correctly inserted.
49 Head voltage does not raise.
4F Head voltage drops too quick.
50 The purge cam switch is not switching ON/OFF.
52 Failed to detect the origin of the purge cam.
5A Abnormal stop of purge cam being driven
5B Pump of maintenance unit stopped abnormally during exhaustion/
suction.
5D Excessive current protection activated for the driver IC during purge
cam operation.
5E Excessive current protection activated for the driver IC during pump
operation.
67 Switchback sensor detects no paper tray 1 state.
75 Head/carriage unit cannot shift to head capping position.
76 Head/carriage unit cannot shift to head uncapping position.
7E Head property information not input.
80 Recording paper size error (during FAX/list printing)
Registration sensor, paper width sensor detect unspecified papers.
81 Recording paper size error (other than FAX/list printing)
Registration sensor, paper width sensor detects papers smaller than
specified size.
82 Recording paper jam
Paper width sensor cannot detect leading edge of recording papers.
84 Recording paper jam
Registration sensor stays in paper feeding state even after completion
of paper ejection action.
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