II - 9
[ 2 ] Cassette Sensor
The sensor circuit consists of a 7-switch cassette sensor (SW1 through SW7).
Loading a tape cassette turns on some of those seven switches on the cassette sensor
while keeping other switches off depending upon the ID encoding holes provided in the
tape cassette currently loaded. If an encoding ID hole is closed, the corresponding
sensor switch goes on.
With the states of those sensor switches, the CPU identifies the tape width, ink ribbon
type of the tape cassette, as listed in Table 2.2-1.
Table 2.2-1 Coded Values for Identifying Tape Cassette Type
* The tape cassette type is detected by the detecting switches provided in the machine
and the hole provided in the tape cassette.
0: ID hole opened, sensor switch OFF
1: ID hole closed, sensor switch ON
Cassette type
Quintuple switch
SW6
SW1 SW2 SW3 SW4 SW5
Cassette not installed.
0
0
0
0
0
0
3.5mm Non-laminated tape cassette
0
0
1
1
0
1
6mm
Laminated tape cassette
0
0
1
0
0
0
Non-laminated tape cassette
0
0
1
1
0
0
9mm
Laminated tape cassette
1
1
1
0
0
0
Non-laminated tape cassette
1
1
0
0
0
0
12mm Laminated tape cassette, Instane
lettering tape cassette
0
1
0
0
0
0
Non-laminated tape cassette, Fabric
tape cassette, Refill tape cassette,
Recycled tape cassette
0
1
1
1
0
0
18mm Laminated tape cassette
1
0
1
1
0
0
Non-laminated tape cassette, Fabric
tape cassette, Recycled tape cassette
1
0
0
0
0
0
Instane lettering tape cassette, Iron-
on transfer tape cassette
1
1
1
0
1
0
24mm Laminated tape cassette, Instane
lettering tape cassette
1
0
1
1
1
0
Non-laminated tape cassette, Refill
tape cassette, Recycled tape cassette
1
0
0
0
1
0
SW6
SW7
SW3
SW4
SW2
SW1
SW5
<Position of sensor switches>
(Top view)
SW1 to SW6:
For the detection of the tape cassette.
SW7:
For the detection of the opening/closing
of the cassette cover.
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 ...
