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KX-FP701LA
6.6.
Modem Section
6.6.1.
Function
The unit uses a 1 chip modem (IC5) that serves as an interface between the control section for FAX transmission and reception
and the telephone line. During a transmitting operation, the digital image signals are modulated and sent to the telephone line.
During a receiving operation, the analogue image signals which are received via the telephone line are demodulated and con-
verted into digital image signals. The communication format and procedures for FAX communication are standardized by ITU-T.
This 1 chip modem (IC5) has hardware which sends and detects all of the necessary signals for FAX communication.
It can be controlled by writing commands from the CPU (IC1: inside ASIC) to the register in the modem (IC5).
This modem (IC5) also sends DTMF signals, and detects a busy tone and dial tones.
Overview of Facsimile Communication Procedures (ITU-T Recommendation):
1. ON CCITT (International Telegraph and Telephone Consultative Committee)
The No. XIV Group of ITU-T, one of the four permanent organizations of the International Telecommunications Union (ITU),
investigates and make recommendations on international standards for facsimiles.
2. Definition of Each Group
• Group I (G1)
Official A-4 size documents without using formats which reduce the band width of a signal are sent over telephone lines.Deter-
mined in 1968.
Transmission for about 6 minutes at a scanning line density of 3.85 lines/mm.
• Group II (G2)
Using reduction technology in the modulation/demodulation format, an A-4 size document is sent at an official scanning line den-
sity of 3.85 lines/mm for about 3 minutes.
Methods to suppress redundancy are not used.
Determined in 1976.
• Group III (G3)
Method of suppressing redundancy in the image signal prior to modulation is used. An A-4 size document is sent within about
one minute.
Determined in 1980.
• Group IV (G4)
Transmission is via the data network. A method is provided for suppressing redundancy in signals prior to transmission, and
error-free reception of transmission is possible.
The scope of these facsimile applications is not limited simply to transmission of written statements. Through symbiotic linkages
with other communication methods, it can be expected to expand to include integrated services.
Содержание KX-FP701LA
Страница 9: ...9 KX FP701LA 4 General Introduction 4 1 Error Message 4 1 1 Display 4 1 2 Report ...
Страница 11: ...11 KX FP701LA 6 Technical Descriptions 6 1 Connection Diagram ...
Страница 13: ...13 KX FP701LA 6 2 1 General Block Diagram ...
Страница 15: ...15 KX FP701LA 6 3 2 Memory Map ...
Страница 24: ...24 KX FP701LA 6 4 2 Block Diagram ...
Страница 26: ...26 KX FP701LA ...
Страница 41: ...41 KX FP701LA b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format ...
Страница 68: ...68 KX FP701LA 11 2 2 Service Mode Settings Note The above values are the default values ...
Страница 75: ...75 KX FP701LA Countermeasure ...
Страница 76: ...76 KX FP701LA REFERENCE 10Test Mode P 60 ...
Страница 77: ...77 KX FP701LA REFERENCE 10Test Mode P 60 ...
Страница 78: ...78 KX FP701LA REFERENCE 10Test Mode P 60 ...
Страница 79: ...79 KX FP701LA REFERENCE 10Test Mode P 60 ...
Страница 80: ...80 KX FP701LA ...
Страница 81: ...81 KX FP701LA ...
Страница 82: ...82 KX FP701LA REFERENCE 10Test Mode P 60 ...
Страница 86: ...86 KX FP701LA ...
Страница 111: ...111 KX FP701LA ...
Страница 118: ...118 KX FP701LA I O and Pin No Diagram ...
Страница 120: ...120 KX FP701LA Other NG example while the power is ON and the LCD displays the following ...
Страница 121: ...121 KX FP701LA 12 5 5 2 NG Example ...
Страница 125: ...125 KX FP701LA 12 5 7 2 Troubleshooting Flow Chart ...
Страница 129: ...129 KX FP701LA 12 5 9 5 Check the HOOK Switch SW101 ...
Страница 130: ...130 KX FP701LA 12 5 10 CIS Contact Image Sensor Section REFERENCE 1 10Test Mode P 60 Refer to 6 4 4 Scanning Block P 27 ...
Страница 131: ...131 KX FP701LA 12 5 11 Thermal Head Section Note Refer to 6 4 3 Thermal Head P 25 ...
Страница 132: ...132 KX FP701LA 13 Service Fixture Tools ...
Страница 135: ...135 KX FP701LA 14 2 DISASSEMBLY PROCEDURE 14 2 1 HOW TO REMOVE THE PAPER TRAY AND RECORDING PAPER SUPPORT ...
Страница 136: ...136 KX FP701LA 14 2 2 HOW TO REMOVE THE OPERATION PANEL BLOCK ...
Страница 137: ...137 KX FP701LA 14 2 3 HOW TO REMOVE THE OPERATION BOARD AND LCD ...
Страница 138: ...138 KX FP701LA 14 2 4 HOW TO REMOVE THE SEPARATION HOLDER AND EXIT ROLLER ...
Страница 139: ...139 KX FP701LA 14 2 5 HOW TO REMOVE THE IMAGE SENSOR CIS ...
Страница 140: ...140 KX FP701LA 14 2 6 HOW TO REMOVE THE THERMAL HEAD ...
Страница 141: ...141 KX FP701LA 14 2 7 HOW TO REMOVE THE PLATEN ROLLER AND BACK COVER ...
Страница 142: ...142 KX FP701LA 14 2 8 HOW TO REMOVE THE PICKUP ROLLER ...
Страница 143: ...143 KX FP701LA 14 2 9 HOW TO REMOVE THE CASSETTE LEVER ...
Страница 144: ...144 KX FP701LA 14 2 10 HOW TO REMOVE THE BOTTOM FRAME ...
Страница 145: ...145 KX FP701LA 14 2 11 HOW TO REMOVE THE DIGITAL ANALOG SENSOR BOARDS ...
Страница 146: ...146 KX FP701LA 14 2 12 HOW TO REMOVE THE POWER SUPPLY BOARD AND AC CORD ...
Страница 147: ...147 KX FP701LA 14 2 13 HOW TO REMOVE THE MOTOR BLOCK AND SEPARATION ROLLER ...
Страница 148: ...148 KX FP701LA 14 2 14 HOW TO REMOVE THE GEARS OF MOTOR BLOCK ...
Страница 149: ...149 KX FP701LA 14 2 15 INSTALLATION POSITION OF THE LEAD WIRES ...
Страница 163: ...163 KX FP701LA 16 1 4 Power Supply Board 16 1 5 Interface Board ...
Страница 166: ...166 KX FP701LA 16 3 Test Chart 16 3 1 ITU T No 1 Test chart ...
Страница 167: ...167 KX FP701LA 16 3 2 ITU T No 2 Test Chart ...
Страница 168: ...168 KX FP701LA 16 3 3 Test Chart ...
Страница 169: ...169 KX FP701LA MEMO ...
Страница 180: ...180 KX FP701LA MEMO ...
Страница 188: ...188 KX FP701LA MEMO ...
Страница 194: ...194 KX FP701LA 20 1 2 Operation Panel Section ...
Страница 195: ...195 KX FP701LA 20 1 3 Back Cover Section ...
Страница 196: ...196 KX FP701LA ...
Страница 197: ...197 KX FP701LA 20 1 4 Upper Cabinet Section ...
Страница 198: ...198 KX FP701LA 20 1 5 Lower Cabinet Section ...
Страница 199: ...199 KX FP701LA 20 1 6 Gear Block Section ...
Страница 200: ...200 KX FP701LA 20 1 7 Screws ...
Страница 201: ...201 KX FP701LA 20 1 8 Accessories and Packing Materials ...