Brother MFC-8220 - Page 206

CHAPTER 6 TROUBLESHOOTING
6-28
F-4
No bell ring.
Possible cause Step Check Result Remedy
Ring delay 1
Ring delay is set to "0". Yes Set the ring delay to other
than "0".
Ring volume 2
Ring volume is set to "OFF". Yes Set the ring volume to other
than "OFF".
Connection
between main
PCB and
scanner unit
3
Main PCB and scanner unit
are properly connected.
No Fix the connection properly.
Harness
between main
PCB and
scanner unit
4
Harness wire is damaged. Yes Replace the harness with a
normal part.
Connection
between main
PCB and NCU
PCB
5
Main PCB and NCU PCB are
properly connected.
No Fix the connection properly.
Harness
between main
PCB and NCU
PCB
6
Harness wire is damaged. Yes Replace the harness with a
normal part.
Speaker 7
Replacement of speaker
solves the problem.
Yes Replace the speaker with a
normal part.
NCU PCB 8
Replacement of NCU PCB
solves the problem.
Yes Replace the NCU PCB with
a normal part.
Main PCB 9
Replacement of main PCB
solves the problem.
Yes Replace the main PCB with
a normal part.