Epson WF-7110 Series, Service Manual

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Confidential
Adjustment Details of Adjustments 70
Epson WF-7620 / WF-7610 / WF-7110 Series Revision B
3.2.2.4 Checking the Platen Gap
Check the platen gap at the three points; on the 0-digit side, on the 130- digit side, and in the middle. The
thickness gauges to be used differ according to the points to be checked. Therefore, use an appropriate thickness
gauge in the order of checks referring to the table below.
1. Place the thickness gauge 1 on the positions shown in Table 3-4 .
2. Move the CR Unit to the thickness gauge and check if the CR Unit touches the gauge.
„
When the CR Unit touches the thickness gauge
Bring the CR Unit back to the middle of the printer, and start from
Step 1 of "3.2.2.3 PG adjustment procedure
(p68)" again.
„
When the CR Unit does not touch the thickness gauge
Bring the CR Unit back to the middle of the printer and remove the thickness gauge, then go to
Step 3 .
3. Place the thickness gauge 2 on the positions shown in Table 3-4 .
4. Move the CR Unit to the thickness gauge and check if the CR Unit touches the gauge.
„
When the CR Unit touches the thickness gauge
Bring the CR Unit back to the middle of the printer and remove the thickness gauge, then go to
Step 5 .
„
When the CR Unit does not touch the thickness gauge
Bring the CR Unit back to the middle of the printer, and start from
Step 1 again.
5. When checking the PG at three points is complete, tighten the screws (x5) on the CR Guide Frame and the
screw on the CR Scale Holder and CR Spacer to secure them. (See " CR Guide Frame Assy (w/CR Unit)
(p44)" .)
6. Remove all ink cartridges, then checking the platen gap is complete.
Table 3-4. Thickness gauges to be used and where to check
Order Where to check
Thickness
gauge 1
Thickness
gauge 2
Remarks
1 0-digit side: Position A shown in Figure 3-9 . 1.52 mm 1.72 mm Actual thickness after
Teflon tape is applied is
the values on the left plus
0.08 mm in thickness.
2 130-digit side: Position B shown in Figure 3-9 .
3 In the middle: Position B shown in Figure 3-9 . 1.42 mm 1.82 mm