III - 14
3.2.10 Interface Circuit
[1] Serial Interface Circuit
Fig. 3.2-12 shows the serial interface circuit.
This circuit is a 8-pin, RS-232C serial interface circuit for making connections
to a computer.
#2 is a RS-232C driver IC which converts logic level signals into RS-232C (+
and) signals.
The RXD signal is a print data input signal from the computer and transmitted
at a maximum baud rate of 115.2 Kbps.
The TXD and DTR signals are control output signals to the computer.
With the power on, P66 is switched to low to turn on Q6 (transistor) so that
the power Vcc is supplied to #2.
Fig. 3.2-12 Serial Interface Circuit
Содержание P-touch PRO DX PT-9200DX
Страница 1: ...SERVICE MANUAL MODEL PT 9200DX ...
Страница 2: ...SERVICE MANUAL MODEL PT 9200DX ...
Страница 5: ...CHAPTER I SPECIFICATIONS ...
Страница 11: ...CHAPTER II MECHANISMS ...
Страница 66: ...CHAPTER III ELECTRONICS ...
Страница 89: ...CHAPTER IV TROUBLESHOOTING ...
Страница 92: ...IV 2 2 The tape cassette type is not detected correctly 3 The LED does not light up ...
Страница 93: ...IV 3 4 No printing is performed 5 The interface malfunctions ...
Страница 94: ...IV 4 6 The tape is not cut ...
Страница 95: ...IV 5 7 The tape is not fed correctly ...
Страница 96: ...IV 6 ...
Страница 97: ...IV 7 8 Half cut is not possible ...
Страница 98: ...IV 8 9 The tape is not ejected forcibly ...
Страница 99: ...APPENDIX Circuit Diagram Main PCB Power Supply PCB 100 120V Power Supply PCB 230V ...
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Страница 104: ...Sep 2000 5V2106BE0 Printed in Japan ...