Service manual

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

Remove the printer’s top cover.

[STEp

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

END

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