Brother HL-2400C - Page 283

VIII-37
Error Code
Concerned Part
Fusing Unit and Others
H2,H3,H4
Confirm that the fusing heater is lit.
Is the fusing heater switching on and off.
Is the line voltage thecorrect value ?
Is the rating of fusing heater correct ?
Are H2,H3 and H4 errors cleared ?
Are H2,H3 and H4 errors cleared ?
Are the connector HP/HN connected ?
Confirm the wiring and connector of the heater.
Are H2,H3 and H4 errors cleared ?
Connect them properly.
NO
NO
NO
YES
Is the fuser connector damaged ?
Is there any contact failure of the lamp holder ?
YES
NO
Replace the fusing unit.
Is the fuser unit properly installed ?
Is the heater wiring cut or damaged ?
Replace the lamp and lamp holder.
NO
Confirm the input voltage.
Confirm the rating and replace
the fusing heater.
Replace the power supply unit (LVPS).
Replace the MCTL PCB.
Are H2,H3 and H4 errors cleared ?
Install it properly.
Replace the connector.
Replace the heater.
YES
NO
YES
NO
NO
NO
NO
NO
NO
YES
YES
YES
YES
YES
YES
YES
Finished.