Brother DCP-8085DN Service Manual page 153

■ Pickup function of paper tray does not work.
Step
Link lever not operating smoothly or
1
catching.
Pickup roller holder ASSY not
2
operating smoothly or catching.
3 Link lever damaged
4 Roller holder ASSY failure
Paper feed/belt cleaner motor failure Replace the paper feed/belt cleaner
5
■ The new toner is not detected.
Step
New toner actuator not operating
1
smoothly or catching.
2 New toner actuator damaged
3 Main PCB failure
Toner sensor PCB (TE/NEW) failure
4
■ 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
Failure inside the
machine
1
Breakage of
2 main PCB
■ USB direct printing does not work.
Step
1 USB host PCB failure
2 Main PCB failure
Cause
Cause
Check
Does the machine print
test pattern?
(Check it following the
procedure described in
"4.5 Test Pattern 1
(Function code 09)" in
Chapter 7.)
Does the machine make
a print using a correct
PC and a USB cable?
Cause
3-81
Remedy
Make sure correct movemet of the link
lever.
Make sure correct movement of the
pickup roller holder ASSY.
Replace the link lever.
Replace the roller holder ASSY.
motor.
Remedy
Make sure correct movement of the new
toner actuator of the appropriate color.
Replace the drum unit.
Replace the main PCB ASSY.
Replace the toner sensor PCB ASSY (TE/
NEW) of the appropriate color.
Result
Identify the error type, and
then refer to the specified
section of this chapter.
No
Replace the main PCB
No ASSY.
Remedy
Replace the USB host PCB.
Replace the main PCB ASSY.
Remedy
Confidential