Adjusting The Ccd; Preparing For The Ccd Adjustment - Xerox Document FaxCentre 165c Service Manual

6.3 ADJUSTING THE CCD

This adjustment MUST be performed, exclusively in a laboratory, after replacing
the CCD board, and requires the following equipment:
1. a special jig (order code 98870 H)
2. a flat cable like the one that connects the CCD board to the motherboard
3. a plate with test points, which may be prepared at the laboratory, bearing in mind
that the test point signals must correspond to the following pins of connector J14
on the motherboard: RS =8, SH = 13, VIDEO = 10, GND = 4-9-11
4. an oscilloscope with a memory to function as an "event counter"
5. a sample facsimile machine of the same class as the machine to be repaired.

6.3.1 Preparing for the CCD Adjustment

Before proceeding to adjust the CCD, the sample facsimile machine must be
prepared and connected to the scanner unit on which the CCD board has been
replaced.
1) Disconnect the CCD flat cable from connector J8 on the motherboard and plug
in one end of the additional flat cable in its place (see figure 6-6)
2) Plug the other end of the additional flat cable into one connector of the test point
plate and then the replaced CCD board flat cable into the remaining connector on
the plate (see figure 6-6)
connector J8
XEROX DFC165 & DWC165c Service Manual
additional CCD plate
flat cable flat cable
Fig. 6-6
J14
test point plate
6-13