MFC-8220
SERVICE MANUAL
6-25
L-2 The control panel does not work.
User Check
(1) No
Possible cause Step Check Result Remedy
Key sticking 1
Any key on control panel is
stuck.
Yes Clean up the panel cover, or
remove the burrs from panel
cover and panel keys.
Connection
between main
PCB and control
panel PCB
2
Main PCB and control panel
PCB are properly connected.
No
Fix the connection properly.
Harness
between main
PCB and control
panel PCB
3
Harness wire is damaged. Yes Replace the harness with a
normal part.
Connection of
FPC key
4
FPC key is properly
connected.
No Fix the connection properly.
FPC key 5
Replacement of FPC key
solves the problem.
Yes Replace the FPC key with a
normal part.
Control panel
PCB
6
Replacement of control panel
PCB solves the problem.
Yes Replace the control panel
PCB with a normal part.
Main PCB 7
Replacement of main PCB
solves the problem.
Yes Replace the main PCB with
a normal part.
L-3 Printing from Macintosh applications fails.
User Check
(1) Verify that the printer driver supplied with the printer has been installed in the system folder and
selected in the selector.
(2) Check the port selected in the selector. The selected port has to match the actual port to which
the printer cable is connected.
Possible cause Step Check Result Remedy
Fault in machine 1
Test page can be printed
using the method described in
3.4 ‘Test Pattern 1’ in Chapter
7.
No
Check the symptom of the
problem and refer to an
appropriate section in this
Chapter to solve the
problem.
Breakage of
main PCB
2
Printing can be made using
an appropriate PC, printer
cable, and RS-100M ?
No
Replace the main PCB.
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General
Weight and Dimensions
