Brother International 9840CDW Users Manual - English - Page 139

Examples of poor print, quality, Recommendation, Troubleshooting and routine maintenance - cartridges

Page 139 highlights

Troubleshooting and routine maintenance Examples of poor print quality Recommendation Colored spots at 2.95 in. (75 mm) 75 mm / 2.95 in. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. 75 mm / 2.95 in. a Dust, paper powder, glue, and so on may stick to the surface of the photosensitive drum (OPC) and cause black or white spots to appear on printed documents. b Make a few copies of a blank, white sheet of paper. (See Making multiple copies on page 78.) C c If you still see the spots on printed documents after making multiple copies, clean the drum unit. (See Cleaning the drum unit on page 161.) Toner scatter or toner stain ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. Gray or colored background ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz. Page skewed AAAABBBBCCCCDDDDEEEEFFFFGGGGHHHHIIIIJJJJKKKKLLLLMMMMNNNNOOOOPPPPQQQQRRRRSSSSTTTTUUUUVVVVWWWWXXXXYYYYZZZZ....0000111122223333444455556666777788889999.... abcdefghijklmnopqrstuvwxyz. abcdefghijklmnopqrstuvwxyz. abcdefghijklmnopqrstuvwxyz. abcdefghijklmnopqrstuvwxyz. d If the print quality still has not improved you need to install a new drum. (See Replacing the drum unit on page 177.) „ Check the machine's environment. Conditions such as high humidity and high temperatures may cause this print quality problem. (See Choosing a location on page 98.) „ Make sure that you use paper that meets our specifications. Roughsurfaced paper may cause the problem. (See Acceptable paper and other media on page 11.) „ Install a new toner cartridge for the color causing the problem. (See Replacing a toner cartridge on page 172.) „ Clean the corona wires and the drum unit for the color causing the problem. (See Cleaning the corona wires on page 158 and Cleaning the drum unit on page 161.) If the print quality has not improved, put in a new drum unit. (See Replacing the drum unit on page 177.) „ Make sure that you use paper that meets our specifications. (See Acceptable paper and other media on page 11.) „ Check the machine's environment. Conditions such as high temperatures and high humidity can increase the amount of background shading. (See Choosing a location on page 98.) „ Install a new toner cartridge for the color causing the problem. (See Replacing a toner cartridge on page 172.) „ Clean the corona wires of the drum unit for the color causing the problem. (See Cleaning the corona wires on page 158.) If the print quality has not improved, put in a new drum unit. (See Replacing the drum unit on page 177.) „ Make sure the paper or other print media is loaded properly in the paper tray and that the guides are not too tight or too loose against the paper stack. „ Set the paper guides correctly. „ The paper tray may be too full. „ Make sure that you use paper that meets our specifications. (See Acceptable paper and other media on page 11.) 123

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Troubleshooting and routine maintenance
123
C
Colored spots at 2.95 in.
(75 mm)
a
Dust, paper powder, glue, and so on may stick to the surface of the
photosensitive drum (OPC) and cause black or white spots to
appear on printed documents.
b
Make a few copies of a blank, white sheet of paper. (See
Making
multiple copies
on page 78.)
c
If you still see the spots on printed documents after making multiple
copies, clean the drum unit. (See
Cleaning the drum
unit
on page 161.)
d
If the print quality still has not improved you need to install a new
drum. (See
Replacing the drum unit
on page 177.)
Toner scatter or toner stain
Check the machine’s environment. Conditions such as high humidity
and high temperatures may cause this print quality problem. (See
Choosing a location
on page 98.)
Make sure that you use paper that meets our specifications. Rough-
surfaced paper may cause the problem. (See
Acceptable paper and
other media
on page 11.)
Install a new toner cartridge for the color causing the problem. (See
Replacing a toner cartridge
on page 172.)
Clean the corona wires and the drum unit for the color causing the
problem. (See
Cleaning the corona wires
on page 158 and
Cleaning
the drum unit
on page 161.) If the print quality has not improved, put
in a new drum unit. (See
Replacing the drum unit
on page 177.)
Gray or colored background
Make sure that you use paper that meets our specifications. (See
Acceptable paper and other media
on page 11.)
Check the machine’s environment. Conditions such as high
temperatures and high humidity can increase the amount of
background shading. (See
Choosing a location
on page 98.)
Install a new toner cartridge for the color causing the problem. (See
Replacing a toner cartridge
on page 172.)
Clean the corona wires of the drum unit for the color causing the
problem. (See
Cleaning the corona wires
on page 158.) If the print
quality has not improved, put in a new drum unit. (See
Replacing the
drum unit
on page 177.)
Page skewed
Make sure the paper or other print media is loaded properly in the
paper tray and that the guides are not too tight or too loose against
the paper stack.
Set the paper guides correctly.
The paper tray may be too full.
Make sure that you use paper that meets our specifications. (See
Acceptable paper and other media
on page 11.)
Examples of poor print
quality
Recommendation
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
75 mm / 2.95 in.
75 mm / 2.95 in.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.
ABCDEFGHIJKLMNOPQRSTUVWXYZ. 0123456789. abcdefghijklmnopqrstuvwxyz.