Printing From Macintosh Applications Fails - Brother DCP-9045CDN Service Manual

The control panel does not work.
Step Possible cause
Key sticking
1
Connection
2
between main
PCB and control
panel PCB
Harness between
3
main PCB and
control panel PCB
Rubber Key
4
Control panel
5
PCB
Main PCB
6

Printing from Macintosh applications fails.

User Check
- Check that the printer driver which, is supplied with the product, is installed in Library/
Printers, and that the print queue is created.
- Check the connecting end on the printer browser. It must be matched with the connecting end
which is actually connected.
Step Possible cause
1 Failure inside the
machine
Breakage of main
2
PCB
Check
Is there a key on the
control panel stuck?
Are the main PCB and
control panel PCB
connected properly?
Is the harness damaged?
Is the problem solved
after replacing the rubber
key?
Is the problem solved
after replacing the control
panel PCB?
Is the problem solved
after replacing the main
PCB ASSY?
Check
Does the machine print
test pattern?
(Check it following the
procedure described in
"Maintenance mode 09".)
Does the machine make
a print using a correct PC
and a USB cable?
1-69
Remedy
Result
Yes
Clean up the panel cover,
or remove the burrs from
panel cover and panel
keys.
No Reconnect the connector
properly.
Yes
Replace the harness with
a normal one.
Yes
Replace the rubber Key.
Yes Replace the control panel
PCB.
Replace the main PCB
Yes
ASSY.
Remedy
Result
No Identify the error type, and
then refer to the specified
section of this chapter.
No
Replace the main PCB
ASSY.
Confidential