Brother HL-2600CN Service Manual page 159

45-3 DBV TUNE UP
This mode shall be used when the image optical density needs to be adjusted.
Adjustment of the developer bias voltage against the reference value 0 (zero) in the
range between the step -4 and +4.
Description of Procedures
1) Press the Reprint button after selecting "NVM
TUNE UP".
2) After selecting DBV TUNE UP Code 3, press
the Reprint button.
3) After selecting the color to be adjusted, press
the Reprint button. (Ex. Magenta).
4) The adjustment value can be adjusted in 8
steps between -4 and +4.
After selecting a given number, press the
Reprint button.
5) Press the - button to finish the adjustment
work for Magenta.
Repeat steps 3 to 5 for each color.
6) Press the - button to finish the DBV
adjustment work.
o
(a) (b)
a)
o
(b) (c)
b)
o
(c) (d)
c)
o
(d) (e)
d)
o
(d) (e)
e)
o
(e) (f)
f)
V-34
LCD Message
39 FACTORY MODE
NVM TUNE UP
45 NVM TUNE UP
12345678910 12 16
45 DBV TUNE UP
Y/M/C/K
45 MAGENTA [-1]
-<432101234>+
45 DBV TUNE UP
Y/M/C/K
45 NVM TUNE UP
12345678910 12 16