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III
- 3
3.2 MAIN PCB
Fig. 3.2-1 shows a block diagram of the main PCB. The PCB consists of the following
components:
(1) CPU (including the ROM and RAM)
(2) SRAM (32-kilobyte)
(3) EEPROM (1-kilobit)
(4) Power ON/OFF circuit, thermal head control circuit, FEED/CUT switch ON/OFF
circuit, and LEDs ON/OFF circuit
(5) Cutter motor drive circuit and tape feed motor drive circuit
(6) Cassette sensor circuit, cover open sensor circuit, cutter sensor circuit, and tape end
sensor circuit
(7) Head property detection circuit
(8) Head voltage detection circuit and ambient temperature detection circuit
(9) Oscillation circuit
(10) Reset circuit
Fig. 3.2-1 Block Diagram of the Main PCB
Содержание PT-2500PC
Страница 1: ...SERVICE MANUAL MODEL PT 2500PC ...
Страница 2: ...SERVICE MANUAL MODEL PT 2500PC ...
Страница 5: ...CHAPTER I SPECIFICATIONS ...
Страница 11: ...CHAPTER II MECHANISMS ...
Страница 49: ...CHAPTER III ELECTRONICS ...
Страница 68: ...CHAPTER IV TROUBLESHOOTING ...
Страница 72: ...IV 3 3 The ON OFF lamp LEDs will not come on 4 No printing is performed ...
Страница 73: ...IV 4 5 Interface malfunctions 6 No tape cutting ...
Страница 74: ...IV 5 7 Tape feeding error ...
Страница 75: ...IV 6 ...
Страница 76: ...APPENDICES Circuit Diagrams A Main PCB B Power Supply PCB ...
Страница 79: ...Nov 98 5V2086BE0 Printed in Japan ...