8.3.7. SUPERVISION CIRCUIT FOR THE THERMAL HEAD TEMPERATURE
1. Function
The thermistor changes the resistor according to the temperature and uses the thermistor´s characteristics.
The output of pin 139 of IC1 becomes a low level.
Then when it becomes a high level, it triggers point (A).
In point (C), according to the voltage output time, the thermal head´s temperature is detected.
After the thermal head temperature is converted to voltage in (B), it is then changed to digital data in the A/D converter inside
IC1. The CPU decides the strobe width of the thermal head according to this value. Therefore, this circuit can keep the thermal
head at an even temperature in order to stabilize the printing density and prevent the head from being overheated.
112
KX-FT907BX-B / KX-FT907BX-W
Содержание KX-FT907BX-B
Страница 25: ...6 DISASSEMBLY INSTRUCTIONS 6 1 HOW TO REMOVE PAPER STACKER 25 KX FT907BX B KX FT907BX W ...
Страница 26: ...6 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 26 KX FT907BX B KX FT907BX W ...
Страница 27: ...6 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 27 KX FT907BX B KX FT907BX W ...
Страница 28: ...6 4 HOW TO REMOVE THE IMAGE SENSOR 28 KX FT907BX B KX FT907BX W ...
Страница 29: ...6 5 HOW TO REMOVE THE THERMAL HEAD AND CUTTER UNIT 29 KX FT907BX B KX FT907BX W ...
Страница 30: ...6 6 HOW TO REMOVE THE DOCUMENT TRAY 30 KX FT907BX B KX FT907BX W ...
Страница 31: ...6 7 HOW TO REMOVE THE BOTTOM FRAME 31 KX FT907BX B KX FT907BX W ...
Страница 32: ...6 8 HOW TO REMOVE THE HANDSET CRADLE CABINET AND SPEAKER 32 KX FT907BX B KX FT907BX W ...
Страница 33: ...6 9 HOW TO REMOVE THE DIGITAL ANALOG AND POWER SUPPLY BOARD AND AC INLET 33 KX FT907BX B KX FT907BX W ...
Страница 34: ...6 10 HOW TO REMOVE THE ROLLERS 34 KX FT907BX B KX FT907BX W ...
Страница 35: ...6 11 HOW TO REMOVE THE MOTOR BLOCK 35 KX FT907BX B KX FT907BX W ...
Страница 36: ...CROSS REFERENCE HOW TO REMOVE THE THERMAL HEAD AND CUTTER UNIT P 29 36 KX FT907BX B KX FT907BX W ...
Страница 37: ...37 KX FT907BX B KX FT907BX W ...
Страница 38: ...6 12 INSTALLATION POSITION OF THE LEAD WIRES 38 KX FT907BX B KX FT907BX W ...
Страница 39: ...6 13 INSTALLATION OF THERMAL HEAD 39 KX FT907BX B KX FT907BX W ...
Страница 51: ...7 4 6 SERVICE MODE SETTINGS Example of a printed out list 51 KX FT907BX B KX FT907BX W ...
Страница 57: ...7 5 4 4 SKEW CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 25 57 KX FT907BX B KX FT907BX W ...
Страница 63: ...7 5 5 1 2 SOMETIMES THERE IS A TRANSMIT PROBLEM 63 KX FT907BX B KX FT907BX W ...
Страница 65: ...7 5 5 1 4 THE UNIT CAN COPY BUT CANNOT TRANSMIT RECEIVE 65 KX FT907BX B KX FT907BX W ...
Страница 72: ...Countermeasure 72 KX FT907BX B KX FT907BX W ...
Страница 73: ...73 KX FT907BX B KX FT907BX W ...
Страница 74: ...74 KX FT907BX B KX FT907BX W ...
Страница 75: ...75 KX FT907BX B KX FT907BX W ...
Страница 76: ...76 KX FT907BX B KX FT907BX W ...
Страница 77: ...77 KX FT907BX B KX FT907BX W ...
Страница 78: ...78 KX FT907BX B KX FT907BX W ...
Страница 79: ...79 KX FT907BX B KX FT907BX W ...
Страница 84: ...84 KX FT907BX B KX FT907BX W ...
Страница 87: ...87 KX FT907BX B KX FT907BX W ...
Страница 90: ...7 5 8 3 NG EXAMPLE 90 KX FT907BX B KX FT907BX W ...
Страница 92: ...92 KX FT907BX B KX FT907BX W ...
Страница 94: ...Note Inside the digital board Inside the operation board 94 KX FT907BX B KX FT907BX W ...
Страница 95: ...7 5 9 2 DEFECTIVE ITS INTEGRATED TELEPHONE SYSTEM SECTION 95 KX FT907BX B KX FT907BX W ...
Страница 97: ...2 Troubleshooting Flow Chart 97 KX FT907BX B KX FT907BX W ...
Страница 101: ...CROSS REFERENCE TEST FUNCTIONS P 45 101 KX FT907BX B KX FT907BX W ...
Страница 103: ...8 CIRCUIT OPERATIONS 8 1 CONNECTION DIAGRAM 103 KX FT907BX B KX FT907BX W ...
Страница 105: ...8 2 1 GENERAL BLOCK DIAGRAM 105 KX FT907BX B KX FT907BX W ...
Страница 114: ...8 4 2 BLOCK DIAGRAM 114 KX FT907BX B KX FT907BX W ...
Страница 116: ...116 KX FT907BX B KX FT907BX W ...
Страница 122: ...8 4 6 3 4 COPYING CROSS REFERENCE SENSOR SECTION P 100 122 KX FT907BX B KX FT907BX W ...
Страница 132: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 132 KX FT907BX B KX FT907BX W ...
Страница 138: ...8 10 2 CIRCUIT DIAGRAM 138 KX FT907BX B KX FT907BX W ...
Страница 144: ...9 REFERENCE MATERIAL DATA 9 1 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 144 KX FT907BX B KX FT907BX W ...
Страница 148: ...Refer to ANALOG BOARD SECTION P 93 148 KX FT907BX B KX FT907BX W ...
Страница 149: ...9 3 TEST CHART 9 3 1 ITU T No 1 TEST CHART 149 KX FT907BX B KX FT907BX W ...
Страница 150: ...9 3 2 ITU T No 2 TEST CHART 150 KX FT907BX B KX FT907BX W ...
Страница 151: ...10 FIXTURES AND TOOLS 151 KX FT907BX B KX FT907BX W ...
Страница 152: ...11 CABINET MECHANICAL 11 1 OPERATION PANEL SECTION 152 KX FT907BX B KX FT907BX W ...
Страница 153: ...11 2 UPPER CABINET SECTION 153 KX FT907BX B KX FT907BX W ...
Страница 154: ...11 3 LOWER CABINET CROSS REFERENCE MOTOR SECTION P 155 154 KX FT907BX B KX FT907BX W ...
Страница 155: ...11 4 MOTOR SECTION 155 KX FT907BX B KX FT907BX W ...
Страница 156: ...11 5 ACTUAL SIZE OF SCREWS 156 KX FT907BX B KX FT907BX W ...
Страница 157: ...12 ACCESSORIES AND PACKING MATERIALS 157 KX FT907BX B KX FT907BX W ...
Страница 173: ...16 MEMO 173 KX FT907BX B KX FT907BX W ...
Страница 180: ...180 KX FT907BX B KX FT907BX W Y M KXFT907BXB KXFT907BXW ...