Xerox Wide Format 6705 System Manual page 303

5. Loosen the screw (x4) at the LPH 1 side and LPH 3 side that secure the LPH. (Figure 3)
Adjustment Pin at LPH 1 side
Mounting Face
Securing
Screw
Rotation Angle Check Mark
(Figure 3) LPH and Adjustment Pin Markings
6. After turning the Adjustment Pin according to the following guideline, tighten the screws that
are in contact with the Frame Mounting Face.
<Adjustment Pin Turning Guideline>
Reference The Adjustment Pin adjusts the focus by changing the separation R between the
shaft and the Frame contact surface for each surface. (1 dot = 42.3 Micro-m)
(Figure 4)
R
-150
(Figure 4) Adjustment Range of Adjustment Pin (1 Step 60 degrees = 50 Micro-m)
Check for density difference at the joint sections (Figure 1: between A1 to A3 and B1 to B3,
between C1 to C3 and D1 to D3) and decide on the direction and amount of rotation based
on the severity.
4.3 Error! Reference source not found.
Chapter 4 Disassembly/Assembly and Adjustment
Rear View
Factory Default Orientation of Adjustment
Adjustment Pin at LPH 3 side
Mounting Face
-100 -50 0 +50
When the density difference
between A - B and the density
1
difference between C - D is the
same
When the density difference
2
between A - B is more striking
When the density difference
3
between C - D is more striking
Note If the density difference worsened after turning the Adjustment Pin in clockwise
direction, it indicates that the amount of turning was excessive. Revert by turning it
in counterclockwise direction.
1) If the density difference between A - B has worsened, turn the Adjustment Pin at
Securing
LPH 1 side in counterclockwise direction to revert.
Screw
2) If the density difference between C - D has worsened, turn the Adjustment Pin at
LPH 3 side in counterclockwise direction to revert.
7. Return to Check Procedure, check whether the density difference at the joints of the 3 LPH
has been eliminated and, if it has not, repeat the adjustment until it is.
+100
Adjustment Pin at LPH
Case
1 side
Rotate 1/6 in clockwise
direction
Rotate 1/6 in clockwise
direction
Do not rotate
Adjustment Pin at LPH
3 side
Rotate 1/6 in clockwise
direction
Do not rotate
Rotate 1/6 in clockwise
direction
4-169