Table of Contents
Advertisement
Lead Edge
300mm
+/-1mm
Figure 2 Checking Vertical Magnification
5.
If either measurement is not with in specification, perform the Adjustment.
Adjustment
1.
Horizontal Magnification Adjustment
•
Enter the correction value for
NVM Read/Write
•
Each bit represents 0.1% change:
Increase the value to increase magnification
Decrease the value to decrease magnification
2.
Vertical Magnification Adjustment
•
Enter the correction value for
NVM Read/Write
•
Each bit represents 0.1% change:
Increase the value to increase magnification
Decrease the value to decrease magnification
3.
Repeat Check and Adjustment until the Horizontal/Vertical magnification measurements
are within specification.
Repairs & Adjustments
ADJ 6.5, ADJ 6.6
location [715-702].
location [715-051].
07/2011
4-204
BUS Updated 12/2011
ADJ 6.6 IIT Calibration
Parts List on
PL 1.1
Purpose
The IIT Calibration is accomplished in two stages; White Reference Adjustment and CCD Cali-
bration.
•
The White Reference Adjustment calculates the White Reference Correction using white
paper placed on the platen glass (reflectance difference from true white), and machine
NVM value for "True White."
•
CCD Calibration uses the standard test pattern, 82E13120 to calibrate the sensitivity of
the CCD. It looks at the 5 squares in the upper center of the test pattern as a reference to
do the calibration.
White Reference Adjustment
Check
If the Lens Kit was replaced, the Optical Axis Alignment
1.
For the White Reference Check, use Xerox Digital Color Xpressions+ or Colotech +
paper. Result values for RGB should be approximately 130 to 145.
•
Digital Color Xpressions+ 24 lb. paper = 98 Brightness rating (90 gsm).
•
Colortech + paper = (90 gsm).
2.
Place 10 sheets of A3 or 11 x 17" (short edge lead) clean white paper on the Document
Glass.
3.
Access UI Diagnostics
(Accessing UI
4.
Select
MAX Setup
on the Maintenance/Diagnostics screen.
5.
Select IIT Calibration, then White Reference Adjustment.
6.
Press the Start on the screen.
7.
Result values for RGB should be in the range of 130 to 145.
Table 1 White Reference
R
135
G
136
B
138
8.
If the values are within range proceed to the CCD Calibration Adjustment below.
Adjustment
1.
If the Lens Kit was replaced, go to
ADJ
2.
Make sure you have placed 10 sheets of 11 x 17 digital color Xpressions+ paper against
the registration edge of the platen glass (98 Brightness).
3.
Clean the Optics:
a.
Switch off the power and allow the Exposure Lamp to cool off.
NOTE: The white reference strip is located under the registration guide on the underside of the
platen glass.
b.
Using the optical Cleaning Cloth, clean the front and rear of the Document Glass, the
White Reference Strip, Reflector, and Mirrors.
CAUTION
(ADJ
6.1) must be performed first.
Diagnostics).
(Table
1)
6.1.
Initial Issue
WorkCentre 5335 Family Service Documentation
Advertisement
Table of Contents
