45
KX-FC265CX-S
[Surge Absorber Circuit]
This circuit is for absorbing surge voltage generated by the transformer.
[Control Circuit and Detecting Circuit]
The control circuit amplifies the output with increased voltage detected in the error detecting circuit. Then it drives the main tran-
sistor.
In this power supply, the duty ratio is defined by changing the ON period of the main transistor.
This is shown as follows.
When the output voltage of the 24V circuit increases, the current of the photo coupler PC101 increases, the pulse width of the
output control IC becomes narrower and the ON period of Q101 becomes shorter.
[Over Current Limiter (O.C.L)]
The highest drain current (Q101) is limited by a limiter circuit (IC101) of 24V. The 24V output is limited by this circuit.
[Over Voltage Circuit]
If the 24V output increases because the error detecting circuit or control circuit is broken, IC101 will recognize this signal and
output becomes 0V.
Dummy load method (to quickly check the power supply output)
Refer to
Содержание KX-FC265CX-S
Страница 20: ...20 KX FC265CX S 6 4 2 Block Diagram ...
Страница 22: ...22 KX FC265CX S ...
Страница 35: ...35 KX FC265CX S b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format ...
Страница 58: ...58 KX FC265CX S Note Refer to Program Mode Table P 99 ...
Страница 66: ...66 KX FC265CX S 11 2 Cordless Handset ...
Страница 69: ...69 KX FC265CX S 11 3 2 Service Mode Settings Note The above values are the default values ...
Страница 77: ...77 KX FC265CX S Countermeasure ...
Страница 78: ...78 KX FC265CX S REFERENCE Test Mode P 59 ...
Страница 79: ...79 KX FC265CX S REFERENCE Test Mode P 59 ...
Страница 80: ...80 KX FC265CX S REFERENCE Test Mode P 59 ...
Страница 81: ...81 KX FC265CX S REFERENCE Test Mode P 59 ...
Страница 82: ...82 KX FC265CX S ...
Страница 83: ...83 KX FC265CX S REFERENCE Test Mode P 59 ...
Страница 84: ...84 KX FC265CX S REFERENCE Test Mode P 59 ...
Страница 88: ...88 KX FC265CX S ...
Страница 113: ...113 KX FC265CX S ...
Страница 120: ...120 KX FC265CX S I O and Pin No Diagram ...
Страница 122: ...122 KX FC265CX S Other NG example while the power is ON and the LCD displays the following ...
Страница 123: ...123 KX FC265CX S 12 5 5 2 NG Example ...
Страница 127: ...127 KX FC265CX S 12 5 7 2 Troubleshooting Flow Chart ...
Страница 133: ...133 KX FC265CX S 12 5 11 Thermal Head Section Note Refer to Thermal Head P 21 ...
Страница 142: ...142 KX FC265CX S 13 Service Fixture Tools ...
Страница 146: ...146 KX FC265CX S 14 2 5 Cordless Handset Section REFERENCE E 1 How to Remove the Cordless Handset Board P 170 ...
Страница 147: ...147 KX FC265CX S 14 3 Disassembly Procedure 14 3 1 How to Remove the Image Sensor CIS ...
Страница 148: ...148 KX FC265CX S 14 3 2 How to Remove the Thermal Head ...
Страница 149: ...149 KX FC265CX S ...
Страница 150: ...150 KX FC265CX S 14 3 3 How to Remove the Bottom Frame ...
Страница 151: ...151 KX FC265CX S 14 3 4 How to Remove the P C Boards and Speaker ...
Страница 152: ...152 KX FC265CX S 14 3 5 How to Remove the Power Supply Board and AC Cord ...
Страница 153: ...153 KX FC265CX S 14 3 6 How to Remove the Gear Block and Separation Roller ...
Страница 154: ...154 KX FC265CX S 14 3 7 How to Remove the Gears Motors and Arms of the Gear Block ...
Страница 155: ...155 KX FC265CX S ...
Страница 156: ...156 KX FC265CX S 14 3 8 How to Remove the Charger Board A ...
Страница 157: ...157 KX FC265CX S 14 3 9 How to Remove the Back Cover ...
Страница 158: ...158 KX FC265CX S 14 3 10 How to Remove the Platen Roller and Lock Lever ...
Страница 159: ...159 KX FC265CX S ...
Страница 160: ...160 KX FC265CX S 14 3 11 How to Remove the Pickup Roller and Antenna ...
Страница 161: ...161 KX FC265CX S 14 3 12 How to Remove the Operation Panel ...
Страница 162: ...162 KX FC265CX S 14 3 13 How to Remove the Operation Board MIC Board and LCD ...
Страница 163: ...163 KX FC265CX S 14 3 14 How to Remove the Separation Holder and Exit Roller ...
Страница 164: ...164 KX FC265CX S 14 3 15 Installation Position of the Lead Wires 14 3 15 1 Lower Section ...
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Страница 167: ...167 KX FC265CX S ...
Страница 168: ...168 KX FC265CX S 14 3 15 2 Operation Panel Section ...
Страница 169: ...169 KX FC265CX S 14 3 15 3 Back Cover Section ...
Страница 170: ...170 KX FC265CX S 14 3 16 How to Remove the Cordless Handset Board ...
Страница 171: ...171 KX FC265CX S 14 3 16 1 How to Replace the LCD ...
Страница 193: ...193 KX FC265CX S 16 2 3 4 Copying Note See Sensor Locations in Sensor and Switches P 26 REFERENCE Sensor Section P 130 ...
Страница 200: ...200 KX FC265CX S 17 1 7 Cordless Handset Board ...
Страница 205: ...205 KX FC265CX S 17 4 Test Chart 17 4 1 ITU T No 1 Test Chart ...
Страница 206: ...206 KX FC265CX S 17 4 2 ITU T No 2 Test Chart ...
Страница 207: ...207 KX FC265CX S 17 4 3 Test Chart ...
Страница 237: ...237 KX FC265CX S Memo ...
Страница 239: ...239 KX FC265CX S Memo ...
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Страница 267: ...267 KX FC265CX S YK KXFC265CXS ...