Epson EPL-5800, Service Manual

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EPSON EPL 5800 Revision B
Adjustment Adjustment 87
5.1 Adjustment
This chapter explains adjustment procedure. Adjustment should be done after components
and parts are replaced.
5.1.1 Print Start Position Adjustment
After replacing the main control board, make sure the sub scanning start position (d) is
4mm from the top edge of paper.
If the sub scanning start position (d) is not 4mm from the top edge of paper, adjust the
position by following the instruction below.
ADJUSTMENT BY ACTUAL PRINTING
1. Remove the right cover, and prepare VR1 on the main control board ready for
adjustment.
2. If you rotate VR1 on the main control board clockwise, d gets larger.
If you rotate VR1 on the main control board counterclockwise, d gets smaller.
Figure 5-1. Print Start Position Adjustment
ADJUSTMENT BY VOLTAGE CHANGE
1. With the power ON, put + terminal of the tester on VR1 and - terminal on the frame
GND.
2. Adjust the position as the tester value becomes DC2.5
±
0.1V.
PJ5(8P)
VR1
PJ12(4P)
PJ11(12P)
PJ9(5P)
PJ2(2P) PJ8(3P) PJ7(7P)
PJ4(11P)
PJ6(5P)
PJ10(2P) PJ13(4P)
PJ3(2P)
PJ1(30P)
d
C A U T I O N Print start position adjustment should basically be performed with the
procedure “Adjustment by Actual Printing”.