II - 1
CHAPTER II THEORY OF OPERATION
2.1
Main Mechanisms
2.1.1 Roller Holder ASSY Setting & Retracting Mechanism
This mechanism consists of the roller release lever, roller holder release rod, and roller
holder ASSY.
The roller holder ASSY supports the platen roller and the tape feed sub roller so that
they can move perpendicularly to the head ASSY and the tape feed roller, respectively,
as well as rotating freely.
Loading a tape cassette and closing the cassette cover pushes down the roller release
lever which moves the roller holder release rod to the left (when viewed from the front of
the machine). This pivots the roller holder ASSY around the shaft provided on the
chassis so as to press the roller holder ASSY against the head ASSY side.
The platen roller is pressed perpendicularly against the head ASSY with the tape and
ink ribbon (only the tape when using stamp tape cassettes) sandwiched inbetween
under a uniform load by the platen upper and lower springs. At the same time, the
platen gear becomes engaged with the platen idle gear.
Also, the tape feed sub roller is pressed perpendicularly against the tape feed roller built
in the tape cassette with the tape (and base paper when using laminated tape cassettes
or stamp tape cassettes) sandwiched inbetween under a uniform load by the roller
holder upper and lower springs. At the same time, the sub roller gear becomes engaged
with the tape idle gear.
If you open the cassette cover, the roller release lever pops up so that the roller holder
release rod retracts the roller holder ASSY from the head ASSY, providing you with
enough space to replace the tape cassette.
Figure 2.1-1 Roller Holder ASSY Setting & Retracting Mechanism
Platen upper spring
(Top)
Platen lower spring
Platen roller
(Tape feed) platen gear
(Tape feed) sub roller gear
Ink ribbon
Chassis ASSY
Roller release lever
Roller holder release rod
Shaft
Roller holder ASSY
Platen roller
Tape feed sub roller
Tape feed sub roller
Tape feed roller
Platen idle gear
Adhesive tape
Laminate tape
Head ASSY
Tape cassette
Summary of Contents for P-Touch PT-2730
Page 1: ...P touch SERVICE MANUAL MODEL PT 2730 ...
Page 7: ...I 3 Figure 1 1 2 Key Arrangement 1 PT 2730 USA ...
Page 8: ...I 4 Figure 1 1 3 Key Arrangement 2 PT 2730 UK ...
Page 9: ...I 5 Figure 1 1 4 Key Arrangement 3 PT 2730 DEU ...
Page 10: ...I 6 Figure 1 1 5 Key Arrangement 4 PT 2730 FRA ...
Page 78: ...III 58 Figure 3 3 27 Key Depressing Order ...
Page 84: ...III 64 3 4 Troubleshooting for the Test Mode 1 LCD Indication Check mode ...
Page 85: ...III 65 2 Cassette Sensor Switch Check mode ...
Page 86: ...III 66 ...
Page 87: ...III 67 3 Key Check mode ...
Page 88: ...III 68 4 Print Check mode 5 Cut Check mode ...
Page 89: ...III 69 ...
Page 90: ...III 70 6 Encode Reading Check mode ...
Page 93: ...IV 2 4 3 Troubleshooting Flows 1 Tape feeding failure ...
Page 94: ...IV 3 ...
Page 95: ...IV 4 2 Printing failure ...
Page 96: ...IV 5 ...
Page 97: ...IV 6 3 Powering failure Nothing appears on the LCD and the backlight does not light ...
Page 98: ...IV 7 ...
Page 99: ...IV 8 4 No key entry possible 5 Tape cutting failure ...
Page 100: ...IV 9 6 Interface port failure 7 LCD indication error or backlight error ...
Page 101: ...IV 10 8 Tape cassette type not identified ...
Page 102: ...A 1 APPENDIX 1 CIRCUIT DIAGRAMS Main PCB circuit diagram 1 2 ...
Page 103: ...A 2 Main PCB circuit diagram 2 2 ...
Page 104: ...A 3 Key PCB circuit diagram ...
Page 105: ...Sep 2010 SM PT037 ...