Epson FX 1170 Service Manual - Page 101

Adjusting the Printer Mechanism, 1.1 Platen Gap Adjustment

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REV.-A 4.1 Adjusting the Printer Mechanism This section describes the various adjustments required to keep the printer mechanism in optimum condition. 4.1.1 Platen Gap Adjustment If you rotated or reassembled the carriage guide shaft or the PARALLELISM ADJUSTMENT BUSHING, or if printing is abnormal, you must adjust the gap between the platen and the printhead. [STEP 11 [STEp 21 [STEP 31 [STEP 41 Remove the printer's top cover. Move the LEVER, G. ADJUST to the O setting. Remove the RIBBON MASK using tweezers. Adjust the platen gap according to the following flowchart. The correct platen gap is 0.38 mm +/- 0.02 mm. Use the clearance gauge and adjust the gap so that the 0.36 mm gauge will fall into the gap and the 0.41 mm gauge wiil not. (Never try to force the gau9e into the 9aP.) To widen the gap, rotate the PARALLELISM ADJUSTMENT BUSHING downward. To narrow the gap, rotate the PARALLELISM ADJUSTMENT BUSHING upward. A rotation of one notch changes the gap by approximately O. 025 mm. on the left side? the left side. on the right side? YES the right side. (5END 4-1

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REV.-A
4.1 Adjusting the Printer Mechanism
This section describes the various adjustments required to keep the printer mechanism in optimum condition.
4.1.1 Platen Gap Adjustment
If you rotated or reassembled the carriage guide shaft or the PARALLELISM ADJUSTMENT BUSHING, or if
printing is abnormal, you must adjust the gap between the platen and the printhead.
[STEP
11
Remove the printer’s top cover.
[STEp
21
Move the LEVER, G. ADJUST to the O setting.
[STEP 31
Remove the RIBBON MASK using tweezers.
[STEP 41
Adjust the platen gap according to the following flowchart. The correct platen gap is 0.38 mm
+/- 0.02 mm. Use the clearance gauge and adjust the gap so that the 0.36 mm gauge will fall into
the gap and the 0.41 mm gauge
wiil
not. (Never
try
to force the
gau9e
into the
9aP.)
To widen the gap, rotate the PARALLELISM ADJUSTMENT BUSHING downward. To narrow the
gap, rotate the PARALLELISM ADJUSTMENT BUSHING upward. A rotation of one notch changes
the gap by approximately O. 025 mm.
on the left side?
the left side.
on the right side?
the right side.
YES
(5
END
4-1