DIAGNOSTICS
4 - 39
Operation
Set the 36 Mode.
[36 Mode Menu Screen]
Press
2
Timing Adjustment.
[Timing Adjustment Menu Screen]
Press
7
Laser adjustment
[Laser Adjustment Screen]
Select either LD1 Offset or LD2 Offset with the
Next adjustment
key, then press the
Copy Screen
key. (Adjust the LD1 offset/LD2 offset.)
Load A3/11" × 17" paper into tray 1, press the START
PRINT button to output the test pattern.
Check the test pattern.
Standard: Check if the output patterns of the
two lasers are uniform and that the low-density
section starts anywhere between the two
standard lines, as shown in the figure below.
Press the C button while pressing the P button to
return to the Laser Adjustment Screen.
If the test pattern does not conform to the standard,
enter a value from the numeric keypad and then press
the
SET
key.
Setting range: -99 to +99.
Repeat steps 4 through 8 until the offset is within the
standard value.
Perform the same adjustment for LD1 thick paper
offset/LD2 thick paper offset.
When adjustment is completed, press the
PREVIOUS SCREEN
key.
After this adjustment has been completed, perform
the gamma correction level adjustment [47 – 14].
(2) Laser Adjustment (side pitch offset)
Adjust the interval in the sub scanning direction of the laser.
Preparation: Complete gradation (Gamma) level correction
[47-14].
Operation
Enter the 36 mode.
[36 MODE MENU SCREEN]
Press
2
Timing adjustment.
[TIMING ADJUSTMENT SCREEN]
Press
7
Laser adjustment
[LASER ADJUSTMENT SCREEN]
Using the
Next adjustment
key, select the side pitch
offset, , then touch the
Copy Screen
key.
Place A3/11"x17" paper in tray 1, then press the
PRINT START button and output a test pattern.
Check the test pattern.
Standard: The density of the two parts indicated by
the arrows must be uniform.
If the test pattern does not conform to the standard,
press the C button while pressing the P button.
Enter a value from the numeric keypad, then press
the
SET
key. Setting range: -99 to +99
Repeat steps 4 to 8 until the offset is within the stand-
ard value.
After adjustment, touch the
PREVIOUS SCREEN
key.
Step
1
2
3
4
5
6
7
8
9
10
(1) Laser adjustment (gradation adjustment)
Adjust the laser gradation.
Preparation: Complete Dmax level correction [47 – 13].
Step
1
2
3
4
5
6
7
8
9
10
11
12
LD1 LD2
Standard
DIAGNOSTICS-1
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