Adj 4.1.1 Calibrate Motor Speed - Xerox 8830 Service Manual

ADJ 4.1.1 Calibrate Motor Speed

Purpose
The purpose is to compensate for magnification errors in the direction of
document travel. These errors may be caused by wear of the Document
Drive Rolls. This test determines a speed correction factor that is applied
to the machine motor speed. The correction factor is automatically
stored in non-volatile memory (NVM).
Procedure
Note: This procedure uses the SCSI 7356 software as loaded onto a
Personal Workstation or other personal computer directly connected to
the Scanner. If the controlling system has its own built-in diagnostics,
see the service manual for the controlling system.
REP 4.2.1
Check
1. Start the diagnostic software using the procedure appropriate for the
system to which the Scanner is connected.
Refer to Section 6.
2. Select the Component Tests button from the Service Diagnostic
Menu screen.
3. Select the Calibrate Motor Speed button.
4. Insert Test Pattern 082E11490 face down and with the short edge
as the lead edge.
5. Select the Begin button.
Note: The motor speed is checked and is adjusted automatically if
not correct The screen displays Passed if the speed was successfully
adjusted; otherwise, FAILED is displayed.
repeat the test again. If the problem still exists, go to Section 2, Repair
Analysis Procedures.
Adjustment
Adjustment occurs automatically when the Calibrate Motor Speed
function is selected.
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If FAILED is displayed,
7356 SCANNER