Service manual

4.2 MAIN SCAN POSITION DOT CORRECTION

NOTE: Before adjusting the scanner, perform the printer registration

adjustment (see procedure 8.11).

1. Enter the SP mode and open SP4-10 and SP4-11.

2. Check that each value corresponds to the factory-set value.

3. Press the Interrupt key and copy the C-4 chart in the full-color photo

mode.

NOTE: It is necessary to copy the C-4 chart in photo mode. In letter

mode, color displacement cannot be checked properly.

Be sure to perform the following procedure for both the left and

right edges of the C-4 chart.

4. Check the yellow and cyan vertical lines. (Use a Magnification Scope to

do this.) If they overlap the black line at the edges of the copy, exit the SP

mode to end the adjustment. If the yellow and cyan lines significantly

extend beyond the black line, proceed to the next step.

5. Press the interrupt key to return to the SP mode and open SP4-932. The

following table shows the location of the current values.

4-932-1 Dot correction R left edge

4-932-2 Dot correction R right edge

4-932-3 Dot correction B left edge

4-932-4 Dot correction B right edge

COPY IMAGE ADJUSTMENT

A166/A187/A189 5-28 SM

CÓPIA NÃO CONTROLADA