III - 13
3.2.8 Head Temperature Detection Circuit
Fig. 3.2-10 shows the head temperature detection circuit.
The head temperature detection circuit uses the thermistor on the heat radiation
plate of the thermal head to convert variations in the temperature of the head into
variations in voltage to input them into the A/D input port AN1 of the CPU.
Fig. 3.2-10 Head Temperature Detection Circuit
3.2.9 Oscillation Circuit
Fig. 3.2-11 shows the oscillation circuit.
This circuit contains a 14.7456 MHz oscillator to generate an oscillation at 14.7456
MHz. The internal operations of the CPU are executed based on this clock.
Fig. 3.2-11 Oscillation circuit
Summary of Contents for P-touch PRO DX PT-9200DX
Page 1: ...SERVICE MANUAL MODEL PT 9200DX ...
Page 2: ...SERVICE MANUAL MODEL PT 9200DX ...
Page 5: ...CHAPTER I SPECIFICATIONS ...
Page 11: ...CHAPTER II MECHANISMS ...
Page 66: ...CHAPTER III ELECTRONICS ...
Page 89: ...CHAPTER IV TROUBLESHOOTING ...
Page 92: ...IV 2 2 The tape cassette type is not detected correctly 3 The LED does not light up ...
Page 93: ...IV 3 4 No printing is performed 5 The interface malfunctions ...
Page 94: ...IV 4 6 The tape is not cut ...
Page 95: ...IV 5 7 The tape is not fed correctly ...
Page 96: ...IV 6 ...
Page 97: ...IV 7 8 Half cut is not possible ...
Page 98: ...IV 8 9 The tape is not ejected forcibly ...
Page 99: ...APPENDIX Circuit Diagram Main PCB Power Supply PCB 100 120V Power Supply PCB 230V ...
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