Epson LX-300 Service Manual

LX-3U0 Service Manual
Adjuatmenta
4.1 ADJUSTING THE PRINTER MECHANISM
This section describes the adjustments you may need to make to the printer mechanism.
4.1.1 Platen Gap Adjustment
If you have rotated or reassembled the CR guide shaft assembly or the parallelism adjustment
bushina or if printing is abnormal, you must adjust the platen and the printhead.
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7.
Set the release lever to the friction position.
Remove the upper housing assembly (see Section 3.2.1).
Set the gap adjustment lever to O.
Remove the printhead.
Remove the ribbon mask with a pair of tweezers.
Install the printhead.
Adjust the platen gap using the flowchart below. The correct platen gap is 0.455 mm *
0.015 mm. When measuring the gap, take care to let the gauge fall between the platen and the
printhead by gravity only. To increase the platen gap, turn the parallelism adjustment bushing
toward the platen using a screwdriver. To reduce the platen gap, turn the parallelism
adjustment bushing away from the platen.
Adjust the Platen
Adjust the Platen
Figure 4-1. The Flowchart of the Platen Gap Adjustment
Rev.A
4-1

Epson LX-300 Specifications

General

Print Method	9-pin impact dot matrix
Interface	Parallel
Paper Handling	Friction feed, tractor feed
Weight	4.4 kg
Operating Environment	Temperature: 5 - 35°C, Humidity: 10 - 80%