Ph Unit Mechanical Adjustment - Konica Minolta bizhub C250 Service Manual

Field Service Ver. 3.0 Aug. 2006

14.4 PH Unit Mechanical Adjustment

14.4.1 Skew Adjustment
This adjustment must be made in the following case:
• When PH Unit is replaced.
4. Touch [Service Mode] → [Imaging Process Adjustment] → [Stabilizer] → [Initialize +
Image Stabilization].
5. After image stabilization is completed, display [Service Mode] → [State Confirmation]
→ [Color Regist] and check if the Step Value: X of each color C, M, Y, is within the
specification.
Specification: within ± 4
1. Turn ON the main power switch.
2. Select [Service Mode] → [Test
Mode] → [Gradation Pattern] and
output the test pattern with the fol-
lowing conditions.
Conditions: SINGLE, HYPER,
3. Using the output test pattern, check
4038F3E513DA
if each color of CMYK is printed in
correct pattern.
If the pattern is not correct, any trou-
bles such as connecting failure in PH
Unit of the corresponding color may
occur, which should be modified.
If there isn't any problem, proceed to
step 4.
14. Mechanical adjustment
Gradation, 4 Color
4038F3E515DA
393