Contrast Adjustment; Image Judge Adjustment - Konica Minolta 8050 Service Manual

KONICA MINOLTA 8050/CF5001/C500/8150 Field Service Ver.3.0 Dec. 2004

7.4.4 Contrast adjustment

Adjust the contrast.
Use this adjustment for changing the center value
for the contrast adjustment in the user mode.
A. Procedure
1. Enter the 36 mode.
2. "36 mode menu screen"
Press the [3. Image quality adjustment] key.
3. "Image quality mode menu screen"
Press the [4. Contrast adjustment] key.
4. "Contrast adjustment menu screen"
Press the [COPY SCREEN] key.
5. Select the A3 or 11 x 17 paper and press the
START button with a test chart set to the origi-
nal glass.
6. Press the C button while pressing the P button.
7. Enter a numeric value through the numeric
keys as necessary, and press the [SET] key.
• Setting range: -5 (contrast increased) to +5
(contrast reduced)
8. Repeat steps 4 to 7 until it becomes suitable.
9. Press the [PREVIOUS SCREEN] key to return
to the "Image quality mode menu screen."

7.4.5 Image judge adjustment

Adjust the threshold value of the original image
judgement.
A. Procedure
1. Enter the 36 mode.
2. "36 mode menu screen"
Press the [3. Image quality adjustment] key.
3. "Image quality mode menu screen"
Press the [5. Image judge adjustment] key.
4. "Image judge adjustment mode menu screen"
For the image judge adjustment, the following
items are provided:
[1. Dot detect adjustment]
[2. Color text adjustment]
[3. Dot/Text area adjustment]
5. Press the key of an item you want to adjust.
6. Press the [PREVIOUS SCREEN] key to return
from each of the adjustment screens to the
"Image judge adjustment mode menu screen."
(1) Dot detect adjustment
Adjust the dot discrimination threshold value of the
original image.
a. Procedure
1. Enter the 36 mode.
2. "36 mode menu screen"
Press the [3. Image quality adjustment] key.
3. "Image quality mode menu screen"
Press the [5. Image judge adjustment] key.
4. "Image judge adjustment menu screen"
Press the [1. Dot detect adjustment] key.
5. "Dot detect adjustment R screen"
Press the [COPY SCREEN] key.
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36 MODE