Platen Gap Adjustment - Epson TM-U220 Series Service Manual

Confidential

Platen Gap Adjustment

Adjust the platen gap on the completed TM-U220 printer unit. Use the following steps to adjust
the platen gap for the printer.Adjust the printer's platen gap when you have performed any one
of the following.
Disassembly Items Requiring Platen Gap Adjustment of the Printer
When you have replaced or removed the platen assembly.
When you loosened the screws fastening the carriage unit.
When you replaced or removed the print head.
Note:
Do not use the once removed shaft holder, adjustment roller again.Also perform platen gap adjustment by
the standard of "Falling with 0.45 mm thickness gauge, no fall with 0.55 mm thichness gauge".
1. Open the frame, platen rotation and tighten the shaft holder, adjustment roller firmly.
2. Hold up the frame, platen rotation and make sure the shaft holder, adjustment roller is
tightened firmly on the both sides.
3. Move the printing head unit to the left, insert the gauge from the left side, and adjust the gap
while rotating the shaft holder, adjustment.
4. Move the printing head unit to the right, insert the gauge from the right side, and adjust the
gap while rotating the shaft holder, adjustment.
5. Move the printing head unit to the left, insert the gauge from the left side, and check the gap.
When it does not meet the standard, adjust gap while rotating the shaft holder, adjustment.
6. Move the printing head unit to the right, insert the gauge from the right side, and check the
gap. When it does not meet the standard, adjust the gap while rotating the shaft holder,
adjustment.
gauge
gap narrower
Rev. A
TM-U220 (TypeB/TypeD) Service Manual
shaft holder,
adjustment roller
gap wider
Adjustment and Setting 5-5
gauge