Adf Density Adj. (Adf Adjustment) - Konica Minolta bizhub PRO 920 Service Manual

Field Service Ver2.0 Aug.2005
Handling 2
When the non-image area erase function is not used very frequently, the copier can be used in the current instal-
lation location. However, if the non-image area erase function is frequently used, install the copier in a location
where less external light gets in (darker) than the present location, and check the non-image area erase check
mode again. At this time, when there is a bright light source such as a fluorescent light installed directly above
the copier, reconsider the installation location, or take some measures to shield the light source and check the
mode again.

10.3.19 ADF density adj. (ADF adjustment)

Since the slit glass of the scanning section is coated with electrical conductive material, The way it refracts light
from the exposure lamp is different from that of the original glass. Thus, perform this adjustment when replacing
the slit glass.
Preparation:
• Clean the slit glass.
• Make sure the white chart is not dirty. (Partial dirt can be ignored)
A. Procedure
1.
Enter the Tech. Rep. mode.
2. "Tech. Rep. mode menu screen"
Press the [Machine Adjust] key.
3.
A sub menu appears on the right side of the screen.
Press the [ADF Adjustment] key.
4.
"ADF adjustment mode menu screen"
Press the [ADF Density Adj.] key.
5.
"ADF density adjustment screen"
Set the "white chart" on the DF.
Note
• Set the "white chart" in the A4-direction.
6.
Press the [Start] key.
The white chart is scanned, and density is automatically adjusted.
7.
When an error message appears, turn OFF/ON the power switch (SW2) of the main body. Repeat steps 1
to 6 until it is completed properly.
10. TECH. REP. MODE
301