Brother 2500ML - Manual (Page 123)

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Vertical streaks appear in copies
Sometimes you may see vertical streaks on your copies.
Either the scanner or the primary corona wire for printing is dirty. Clean them both. (See page
13-1-2)
* If the vertical streaks still appear on the faxes or copies, remove the drum unit from the
machine. Then shake the drum unit from-side to side several times, (See step E on page 1-5.)
Horizontal Streaks
You may get a fax with horizontal streaks or with missing lines. Usually this is caused by a poor
telephone connection. Ask the other party to send the fax again.
Poor Printing Quality
If the printing quality is not acceptable level, please change your drum unit with a new one.
The Print is too Light or too Dark
The print density dial is located near the
power cord on the back of the machine. You
can use it to adjust print conditions.
The print may become darker or lighter as
conditions change (such as changing the
toner cartridge and drum unit or if the
machine has become overheated from heavy
use).
Use a screwdriver to turn the print density
dial clockwise for darker print and
counterclockwise for lighter print. The dial
has been set to the middle position.
If the print is still too light, check to see if the Toner Save feature is ON (see page 7-8).
When Dialing Doesn't Work..,
You may have the wrong dialing mode. Change the TONE/PULSE setting. (See page 4-1) You may
also want to check all the telephone line connections (such as to the handset and to the wall jack).
Check also that the power cord is connected. (See page 1-12) Check by pressing HOOK to see if
you hear a dial tone. Also try dialing first pressing HOOK or lifting the handset. Wait until
you hear the fax tones and then press START.
13-8