Adj1. 1. 15 In/Out Density Adjustment - Panasonic DP-C321 Service Handbook

ADJ1. 1. 15 In/Out Density Adjustment

Purpose To Perform the LSU (ROS) In/Out light quantity correction with this adjustment, when
IN/Out densities are different but the parameters other than LSU (ROS) light quantity judges that
all is normal.
Be careful in servicing because tone jump trouble may occur if the adjustment is
corrected drastically. The tone jump is a noticeable difference in the midstream of
gradations when the gradations etc. are printed out.
Preparation
When copying, borrow the document or sample that the clients has complained about. (To show
the adjustment result after the adjustment)
Adjustment
Procedure
1. Enter DC612.
2. Select the Test Pattern in the modes as shown below and print out the test pattern.
• Pattern name: Binary highlight PG LUT: C-TRA On IOT On (Pattern No. 25)
• Color Mode: 4C
• Cin (%): 20%
• Number of prints: 1
• Tray: Tray 1/8.5 x 11" LEF
• Resolution: Not specified
• Binary ED screen
• Print: single mode
2-23
3. Select the pattern that has the same inclination on the four check points in the test pattern
from the 20 patterns below.
Write down the Pattern number. (Vertical axis shows density, and horizontal axis shows
width direction in the pattern)
<Check Point> (Fig. 1)
(Fig. 1) j0mf40960
<Standard Pattern: Pattern 0> (Fig. 2)
(Fig. 2) j0mf40961
Chapter 2 Maintenance