Service manual

ADJUSTMENT
2-20
2 ADJUSTMENT
*31 Image density selection (toner density selection
of developer)
These bits set the toner density of developer by
changing toner supply threshold and developing
sleeve rotation speed with image density
unchanged.
Decrease toner density when the image is gray
background or toner is scattered. Increase toner
density when the image is unevenly transferred
or white spots occur.
Note:
There are three DIP switches to change
the image density : 5-0/1 (toner concen-
tration threshold), 5-2/3 (lase PWM), and
23-2/3 (toner density of developer). The
priority of order of these adjustment are
as follows:
(1) Laser PWM
(2) Toner density of developer
(3) Toner concentration threshold
[4] Setting the Paper Size
When the LCT paper type is changed, it must be stored
in the main body. This setting is effective when an
optional LCT is added.
Select a paper size among standard, non-standard
paper sizes. After selecting a tray size, specify a paper
size.
1. Setting the standard size
Mode 23-3 23-2
Standard toner density
00
Approx. 0.75% up
01
Approx. 0.75% down
10
Approx. 1.5% down
11
Step Operation
1 Enter the 25 mode.
2
[Memory setting mode menu Screen]
Select " Paper size setting".
3
[Paper size setting mode Screen]
Press the key.
4
Press the or button to select
a paper size.
5
Press the key to finish setting.To
cancel the new setting, press the
key, Pressing either key will
display the Memory setting mode menu
Screen again.
2
STD SIZE
OK
CANCEL