Konica Minolta 8050 Service Manual page 116

36 MODE
5. "Printer gamma offset adj. (LS200) (0) screen"
For the printer gamma offset adjustment, the
following items are provided. Press the [NEXT
ADJUSTMENT] key or [PREVIOUS ADJUST-
MENT] key to select an item you want to
adjust.
• "Printer gamma offset adj. (LS200) (0 to 5)"
• "Printer gamma offset adj. (LS150) (0 to 5)"
• "Printer gamma offset adj. (DS200) (0 to 5)"
• "Printer gamma offset adj. (DS150) (0 to 5)"
• "Printer gamma offset adj. (ED-8) (0 to 5)"
• "Printer gamma offset adj. (ED-2) (0 to 5)"
The following shows the copy mode to which
each adjustment is reflected.
(LS200): Line screen/High resolution
(LS150): Line screen/Smooth tone
(DS200): Dot screen/High resolution
(DS150): Dot screen/Smooth tone
(ED-8): Text section to be used together with
the screens above.
(ED-2): High compression
6. Press the [COPY SCREEN] key.
7. Set A4 or 8.5 x 11 paper in the bypass tray and
press the START button to print a test pattern.
8. Check the test pattern that has been outputted.
• Make sure that the high light density starting
section of C and K is uniform, and even
between the gray reference lines [1].
[1]
9. When they are not even, press the C button
while pressing the P button.
2
KONICA MINOLTA 8050/CF5001/C500/8150 Field Service Ver.3.0 Dec. 2004
10. "Printer gamma offset adjustment screen"
Press the key of a color (C or K) you want to
adjust, enter a numeric value through the
numeric keys and press the [SET] key.
• Setting range: -128 (lighter) to +127 (darker)
Note:
• There are three keys: [1/1], [1/2] and [1/3]
provided for each line speed. Be sure to use
the key [1/1] for adjustment. A value entered
by the key [1/1] is automatically inputted into
keys [1/2] and [1/3].
11. Repeat steps 6 to 10 until the standard value is
obtained.
12. Take notice of the gray gradation pattern [1]
created in C, M and Y, make sure that the gray
balance at the square marks line [2] and [3] is
the same.
[6]
Y
M
C
K
8050fs1015
1-84
[5] [4] [2] [3]
8050fs1016
Y
M
C
K
[1]