Alignment And Adjustments; Printer Adjustments; Head Gap Adjustment - Sam4s ER-5100 Service Manual

5 Alignment and Adjustments

This chapter describes the methods for aligning and adjusting components in this ECR.

5-1 Printer Adjustments

5-1-1 Head Gap Adjustment

1. Assemble the Upper Frame Assembly, A, to the
Lower Frame Assembly, I and loosely fox
screws .
2. Wind the Head Gear counterclockwise to;
move the Head to the right end of the Platen
Guide.
3. Insert the Gap Gauge (width 0.5mm) and
tighten the Head and Platen. Tighten the
screws .
4. Wind the Head Gear counterclockwise again
and move the Head to the left end of the Platen
Guide.
5. Insert the Gap Gauge (0.5mm) and tighten the
screws.
6. After tightening al screws , apply Nej-Lock (a
brand of grease) on each of the four screws .
Figure 5-1. Head Gap Adjustment
SAM4S ER-5100 SERIES
5-1-2 Roll Paper Near-End Detector
(Type 1 Paper Sensor)
5-1-2-(a) Adjustment Point
ADJUSTMENT SCALE
#5
#4
#3
#2
#1
BRACKET P/END
(SET FOR PAPER THICKNESS = 0.075MM)
Figure 5-2. Adjustment Point
As Figure 5-2 shows, the slide bracket is set at
Adjustment Scale #3. This is the appropriate scale for the
recommended paper thickness (0.075mm).
The accuracy of the Near-End Detector depends on the
Adjustment Scale setting and the Roll Paper Winding
Core diameter. The only paper approved for use in this
ECR has the following characteristics:
Table 5-1. Roll Paper characteristics
Characteristic
Paper Thickness
Paper Width
ADJUSTMENT POINT
SLIDE BRACKET
Measurement
0
075mm
44.5mm ± 0.5mm
5-1