III-14
3.2.9
Power Supply Circuit
Fig. 3.2-18 shows the power supply circuit. A 3-terminal regulator RH5RL50A stabilizes the
battery output or the AC adapter output, producing the +5BV power source within the variation of
±0.15V.
Capacitor C4 is for the logic circuit; capacitor C1 is for the thermal head and DC motor drive
sources.
Connecting the AC adapter plug with the AC jack J1 cuts off the power fed from the batteries and
feeds power from the AC adapter. (However, the power for memory backup is fed from the
battery.)
Note1: The AC jack is not provided for PT-1180.
Fig. 3.2-19 shows the polarity of the AC adapter plug.
Fig. 3.2-18 Power Supply Circuit
Fig. 3.2-19 AC Adapter Plug
Summary of Contents for P-touch PT-1100
Page 2: ...SERVICE MANUAL MODEL PT 1100 1130 1170 1180 11Q PT 1250 1160 ST 1150 Heavy Duty LabelerTM ...
Page 5: ...CHAPTER I SPECIFICATIONS ...
Page 9: ...I 3 Fig 1 1 2 Key Arrangement 1 ...
Page 10: ...I 4 Fig 1 1 2 Key Arrangement 2 ...
Page 11: ...I 5 Fig 1 1 2 Key Arrangement 3 ...
Page 13: ...CHAPTER II MECHANISMS ...
Page 50: ...35 II 2 3 4 Troubleshooting Flows 1 Tape feeding failure ...
Page 51: ...36 II ...
Page 52: ...37 II 2 Printing failure ...
Page 53: ...38 II ...
Page 54: ...39 II 3 Powering failure Nothing appears on the LCD ...
Page 55: ...40 II 4 No key entry possible ...
Page 56: ...CHAPTER III ELECTRONICS ...
Page 75: ...III 17 3 3 3 Troubleshooting Flows 1 Tape feeding failure 2 Printing failure ...
Page 76: ...III 18 3 Powering failure Nothing appears on the LCD ...
Page 77: ...III 19 4 Abnormal LCD indication ...
Page 78: ...III 20 5 No key entry possible 6 Tape cassette type not identified ...
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