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Adjustment
Platen gap adjustment
1. Turn the ribbon frame knob in the direction of the arrow to remove the ribbon frame
assembly from the printer and remove the manual cutter.
2. Move the print head unit so that it is 1 to 2 cm (0.39 to 0.79”) from portion A of the paper
hold plate spring and insert the scaling gauge between the print head unit and platen.
3. Measure the space and if the value is out of the standard range [0.55 mm ± 0.05 mm (0.022”±
0.002”)], turn the adjustment roller shaft holders to get a value within the specified range.
4. Perform the adjustment at two positions.
Ribbon frame knob
Ribbon frame assembly
Scaling guage
Print head unit
Paper hold
Portion A
Wide
Platen
Adjustment roller
plate spring
shaft holder
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Summary of Contents for UP-250
Page 1: ...EXTERNAL PRINTER FEB 2000 MODEL UP 250 without price TECHNICAL MANUAL ...
Page 95: ... 86 END END Yes No Action 4 Replace main PCB Replace printer OK Action 4 mechanism assembly ...
Page 136: ... 127 ...
Page 149: ... 140 Main Circuit Board Parts Layout ...
Page 150: ... 141 RS 232 Serial Interface Circuit Board Parts Layout ...
Page 151: ... 142 IEEE 1284 Parallel Interface Circuit Board Parts Layout ...
Page 152: ...RS 485 Serial Interface Circuit Board Parts Layout 143 ...
Page 160: ... 151 Case Unit Lubrication Points Diagram 4 G 31 4 G 31 3 G 31 3 G 31 ...
Page 163: ... 154 EXPLODED DIAGRAM FOR TM U200B U210B NO 1 ...
Page 164: ... 155 EXPLODED DIAGRAM FOR TM U200B U200PB U210B U210PB NO 2 ...