37
KX-FC265CX-S
6.7.
NCU Section
6.7.1.
General
It is composed of bell detection circuit, pulse dial circuit, line amplifier, sidetone circuits.
6.7.2.
Bell Detection Circuit
1.
Circuit Operation
The signal waveform for each point is indicated below. The signal (low level section) input to pin 10 of BBIC IC4 on the digital
board.
TEL LINE
→
PC101 (1, 2
→
4)
→
IC4 (10)
6.7.3.
On/Off Hook Circuit
Normally (ON-HOOK condition), LINE RELAY (RL101) and Opt Isorator (PC102) is OFF. While OFF-HOOK, RL101 and PC102
turns ON. This LINE RELAY is controlled by pin 83 of IC4 through the Q101. PC102 is controlled by pin 12 of IC4 through the
Q104.
ON-HOOK:
IC4 (83) Low Level
→
Q101 OFF
→
RL101 OFF
IC4 (12) Low Level
→
Q104 OFF
→
PC102 OFF
OFF-HOOK:
IC4 (83) High Level
→
Q101 ON
→
RL101 ON
IC4 (12) High Level
→
Q104 ON
→
PC102 ON
6.7.4.
Pulse Dial Circuit
The pulse dial is generated by operating the transistor PC102 while OFF-HOOK (RL101 ON) condition.
Make state:
IC4 (12) High Level
→
Q104 ON
→
PC102 ON
Break state:
IC4 (12) Low Level
→
Q104 OFF
→
PC102 OFF
6.7.5.
Line Amplifier and Side Tone Circuit
1.
Circuit Operation
The reception signal output from the line transformer T101 is input to pin (2) of IC101 via C130, R138 and then the signal is
amplified at pin (1) of IC101 and sent to the reception system at through the LPF.
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 ...
Страница 165: ...165 KX FC265CX S ...
Страница 166: ...166 KX FC265CX S ...
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 ...
Страница 266: ...266 KX FC265CX S ...
Страница 267: ...267 KX FC265CX S YK KXFC265CXS ...