Xerox 3050 Service Manual page 533

ADJ 9.3 lncrease the lmage
Density
Purpose
The purpose is t o adjust the toner
concentration level t o increase the image
density level.
Prerequisite
The Electrostatic Series MUST be performed
prior t o performing the image density
adjustment to ensure that all the parameters
are at nominal. Failure t o do this may result
in premature failures or other damage due
t o excessive contamination.
Check
Refer t o the lmage Quality Specifications in
Section 3 of this Service Manual. Check the
line darkness. The copy of the (0.7065)
pattern in the center of Test Pattern 82E5980
should be greater than or equal t o
paragraph 24 on Test Pattern
82E7030.
For higher toner concentration
0
(increase the image density). the toner
sensor voltage must be decreased.
Adjust
1. Enter the diagnostic mode.
A
2. Enter the code [0921-41.
STEP3 B: Each time the Copy contrast
down button isprersed, the next lower
A
WARNING
LED will be lit, indicating a lower
Control Point setting. A control point
There mav be a time delav between the time
o f 5.3 is the lowest sensor voltage that
the code i0921-41 is entekd and the time the
can be attained. Do not move more
fuser drive motor starts to turn. The fuser
than (2) increments at one time. This
drive motor will not start until the fuser is at
may result in a fault.
the correct temperature.
3. (Figure 1): Increase the Image Density.
Sensor
R e a d i n a O
volts
4
PRESS THE Copy CONTRAST
DOWN BUTTON
I
Figure 1. lncrease the image density
(Continued)