III-11
3.2.7
Voltage Detection Circuit and Temperature Sensor circuit
Fig. 3.2-15 and Fig. 3.2-16 (See next page) show the voltage detection circuit and the ambient
sensor circuit which are composed of a resister combination.
[ 1 ]
Voltage detection circuit
This circuit, which is composed of divider resistors R8 and R10, steps down the power source VAD
fed from batteries or the AC adapter output and feeds the output to the A/D input port PA1 on the
CPU. According to the drive source voltage, the CPU determines the optimum head drive power.
During non-printing:
If the voltage level of the VAD drops below approx. 6.8V, the CPU immediately shuts down the
power.
During printing:
•
If the voltage level of the VAD rises over approx. 10.8V, the CPU immediately shuts down the
power.
•
If it drops even more below approx. 5.3V, the CPU displays the message to warn you of a low
battery after completion of printing.
•
If it drops even more below approx. 5.0V, the CPU interrupts the printing and displays the
message to warn you of a very low battery.
•
If it drops below approx. 4.8V, the CPU immediately shuts down the power.
Fig. 3.2-15 Voltage Detection Circuit
Содержание P-touch PT-1100
Страница 2: ...SERVICE MANUAL MODEL PT 1100 1130 1170 1180 11Q PT 1250 1160 ST 1150 Heavy Duty LabelerTM ...
Страница 5: ...CHAPTER I SPECIFICATIONS ...
Страница 9: ...I 3 Fig 1 1 2 Key Arrangement 1 ...
Страница 10: ...I 4 Fig 1 1 2 Key Arrangement 2 ...
Страница 11: ...I 5 Fig 1 1 2 Key Arrangement 3 ...
Страница 13: ...CHAPTER II MECHANISMS ...
Страница 50: ...35 II 2 3 4 Troubleshooting Flows 1 Tape feeding failure ...
Страница 51: ...36 II ...
Страница 52: ...37 II 2 Printing failure ...
Страница 53: ...38 II ...
Страница 54: ...39 II 3 Powering failure Nothing appears on the LCD ...
Страница 55: ...40 II 4 No key entry possible ...
Страница 56: ...CHAPTER III ELECTRONICS ...
Страница 75: ...III 17 3 3 3 Troubleshooting Flows 1 Tape feeding failure 2 Printing failure ...
Страница 76: ...III 18 3 Powering failure Nothing appears on the LCD ...
Страница 77: ...III 19 4 Abnormal LCD indication ...
Страница 78: ...III 20 5 No key entry possible 6 Tape cassette type not identified ...
Страница 80: ......
Страница 81: ......
Страница 82: ......
Страница 83: ...Jan 2002 8V2010BE1 Printed in Japan ...