Brother MFC 9420CN User Manual

Chapter C
C - 6
Document jams
If the document is jammed, follow the steps 
below.
Document is jammed in the top of the 
ADF unit
1Take out any paper from the ADF that is 
not jammed.
2Open the ADF cover.
3Pull the jammed document out to the 
left.
4Close the ADF cover.
Press Stop/Exit.
Note
To avoid future document jams close the ADF 
cover properly by pushing it gently in the 
center.
Document is jammed under the 
document cover
1Take out any paper from the ADF that is 
not jammed.
2Lift the document...

Troubleshooting and routine maintenance
C - 7
C
Paper jams
If paper jams inside the machine, the 
machine will stop. One of the following LCD 
messages will appear to tell you where to find 
the jammed paper.
Paper may jam in the paper tray, inside the 
machine, at the back cover, or where the 
paper comes out of the machine. Check 
where the jam is and follow the instructions 
on the next few pages to remove the jammed 
paper.
If the error message still appears on the LCD 
after you remove the jammed...

Chapter C
C - 8
Note
Do not use the following paper: 
■Bent/curled paper
■Moist paper
■Paper that does not meet specifications
Paper Jam A1 / Paper Jam A2
If there is a paper jam in the paper tray, follow 
these steps: 
1Pull out the paper tray.
2Take out the jammed paper.
3Put the paper tray back in the machine.
4Open the back cover. If there is any 
jammed paper where the paper comes 
out, remove it.
5Close the back cover.
CAUTION
■Do not touch the toner surface of the 
jammed paper. It might stain...

Troubleshooting and routine maintenance
C - 9
C
Paper Jam B
If paper is caught inside the machine, follow 
these steps:
1Open the back cover.
2If the paper jammed while exiting the 
paper tray, remove the jammed paper 
by holding it with both hands and pulling 
it slowly toward you.
3If the paper is caught in the registration 
roller (1), remove the jammed paper by 
holding it with both hands and pulling it 
slowly toward you.
4If the paper is caught in the fusing roller, 
release the fusing unit...

Chapter C
C - 10
Paper Jam C
If paper has passed behind the back cover 
and there is a paper jam where the paper 
comes out, follow the steps below:
1Open the back cover and release the 
fusing unit pressure release levers.
2Remove the jammed paper by pulling it 
out slowly.
3Reset the fusing unit pressure release 
levers.
4Close the back cover.
Paper Jam C
 

Troubleshooting and routine maintenance
C - 11
C
If you are having difficulty with your machine
If you think there is a problem with the way your faxes look, make a copy first. If the copy looks 
good, the problem is probably not your machine. Check the chart below and follow the 
troubleshooting tips.
The Brother Solutions Center offers the latest FAQs and troubleshooting tips.
Visit us at http://solutions.brother.com
.
DIFFICULTYSUGGESTIONS
Printing or Receiving Faxes
Condensed print and horizontal...

Chapter C
C - 12
Sending Faxes
Poor  fax  send  quality Change your resolution to Fine or S.Fine. Make a copy to check your machine’s 
scanner operation. If the copy quality is not good, clean the scanner. 
(See Cleaning the scanner glass on page C-22.)
Transmission Verification Report 
says ‘RESULT:NG’.There is probably temporary noise or static on the line. Try sending the fax again.
If you send a PC FAX message and get ‘RESULT:NG’ on the Transmission 
Verification Report, your machine may be out of...

Troubleshooting and routine maintenance
C - 13
C
Printing Difficulties 
The machine does not print. Please make sure:
 The machine is plugged in and the power switch is turned On. 
—OR—
 The toner cartridge and the OPC belt cartridge are installed properly. 
(See Replacing a toner cartridge on page C-29 and Replacing the OPC belt 
cartridge (OP-4CL) on page C-33.)
—OR—
 The interface cable is securely connected between the machine and computer. 
(See the Quick Setup Guide). 
—OR—
 The correct printer...

Chapter C
C - 14
Software Difficulties
Cannot install software or print. Run the Repair MFL-Pro Suite program on the CD-ROM. This program will repair 
and reinstall the software.
Cannot perform ‘2 in 1’ or ‘4 in 1’ 
printing.Check that the paper size setting in the application and in the printer driver are the 
same.
Machine does not print from Adobe 
Illustrator Try to reduce the print resolution. (See Advanced tab in the Software User’s Guide 
on the CD-ROM.)
—OR—
Add more memory. See Installing...

Troubleshooting and routine maintenance
C - 15
C
Print Quality Difficulties
Printed pages are curled. Low quality thin or thick paper can cause this problem. Make sure you select the 
Paper Type that suits the media type you use. (See Acceptable paper and other 
media on page 2-1.)
Printed pages are smeared. The Paper Type setting may be incorrect for the type of print media you are 
using—OR—The print media may be too thick or have a rough surface. 
(See Acceptable paper and other media on page 2-1 and...