Pg Offset Value Adjustment - Epson Artisan 700 Service Manual

Epson Artisan 700/Epson Stylus Photo PX700W/TX700W

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 (p235)
mechanism, write the notch positions of the parallelism adjustment bushings when
Adjustment (p235) is performed into EEPROM to correct the PG position during APG
operation.
Preparation
After PG Adjustment (p235) is complete, check the notch position of 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
Table5.3.1 (p235)) derived from
due to individual variability of the
Conversion of notch position to offset value
+8
+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.
PG
+14
+12
+10
Figure 5-12. PG offset value Adjustment Screen
2. Enter the PG offset value noted down in advance, and press "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 C
225
Confidential