Pg Offset Value Adjustment - Epson Artisan 810 Service Manual

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5.2.7 PG Offset Value Adjustment

Overview
To compensate the deviation of the PG position (see
the difference of the result of PG Adjustment/PG Inspection (p.229)
variability of the mechanism, write the notch positions of the parallelism adjustment
bushings when PG Adjustment/PG Inspection (p.229)
correct the PG position during APG operation.
Preparation
After PG Adjustment/PG Inspection (p.229)
the parallelism adjustment bushing at the rear on the 0-column side and note down the
offset value according to the figure below.
Rear on 0-column side
Rib
Bushing at the rear on 0-column side has scales in every 2 offsets (notches). As offset
value 0 in center and 1 notch for 1 offset, note down the notch position of bushing
engaged on the rib on the frame.
Figure 5-11. Checking the PG Offset
ADJUSTMENT
Table 5-7 (p229)) derived from
due to individual
is performed into EEPROM to
is complete, check the notch position of
Conversion of notch position to offset value
+6
+4
+2
0
-14 -12 -10 -8 -6 -4 -2
Adjustment Using Adjustment Program
Setting procedure
1. Start the adjustment program, and select "PG offset value Adjustment" from the
menu.
+14
+12
+10
+8
Figure 5-12. PG offset value Adjustment Screen
2. Enter the PG offset value noted down in advance, and press the "Input" button.
The following is a sample of the PG offset value.
C H E C K
P O I N T
Enter "+3" into adjustment
program because the notch
position of bushing engaged on
the rib is +3 from the center.
Figure 5-13. Sample of the PG offset value
Revision G
219
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