7.3.4. MODEM SECTION
7.3.4.1. FUNCTION
The unit uses CODEC (IC609) and ASIC (IC604) 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 analog image signals which are received via the telephone line
are demodulated and converted into digital image signals. The communication format and
procedures for FAX communication are standardized by ITU-T. CODEC and ASIC has hardware
which sends and detects all of the necessary signals for FAX communication.
It can be controlled by writing commands from the CPU (IC604: inside ASIC).
This CODEC and ASIC also sends DTMF signals, generates a call tone (from the speaker), 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
195
Содержание KX-FLM551
Страница 12: ...1 11 2 ITU T No 2 TEST CHART 12 ...
Страница 13: ...1 12 LOCATION OF CONTROLS 1 12 1 OVERVIEW 13 ...
Страница 49: ...CROSS REFERENCE HIGH VOLTAGE SECTION 2 3 4 4 DIRTY AND HALF DARKNESS BACKGROUND 49 ...
Страница 50: ...CROSS REFERENCE HIGH VOLTAGE SECTION 2 3 4 5 BLACK PRINT 50 ...
Страница 51: ...CROSS REFERENCE HIGH VOLTAGE SECTION 2 3 4 6 LIGHT PRINT 51 ...
Страница 52: ...CROSS REFERENCE HIGH VOLTAGE SECTION 2 3 4 7 BLACK DENSITY IS LIGHT OR UNEVEN 52 ...
Страница 53: ...CROSS REFERENCE HIGH VOLTAGE SECTION 2 3 4 8 BLANK PRINT 53 ...
Страница 54: ...2 3 4 9 BLACK WHIT POINT 2 3 5 RECORDING PAPER FEED 2 3 5 1 MULTIPLE FEED 54 ...
Страница 55: ...2 3 5 2 THE PRINTING PAPER IS WAVED OR WRINKLED 55 ...
Страница 56: ...56 ...
Страница 57: ...2 3 5 3 SKEW 57 ...
Страница 58: ...58 ...
Страница 60: ...CROSS REFERENCE SENSOR SECTION MOTOR SECTION 2 3 6 2 DOCUMENT JAM 60 ...
Страница 62: ...2 3 6 4 SKEW 62 ...
Страница 63: ...2 3 6 5 THE SENT FAX DATA IS SKEWED 63 ...
Страница 65: ...2 3 6 8 BLACK OR WHITE VERTICAL LINE 65 ...
Страница 66: ...2 3 6 9 AN ABNORMAL IMAGE IS COPIED 66 ...
Страница 79: ...79 ...
Страница 80: ...CROSS REFERENCE TEST FUNCTIONS 80 ...
Страница 81: ...CROSS REFERENCE TEST FUNCTIONS 81 ...
Страница 82: ...CROSS REFERENCE TEST FUNCTIONS 82 ...
Страница 83: ...CROSS REFERENCE TEST FUNCTIONS 83 ...
Страница 84: ...84 ...
Страница 85: ...85 ...
Страница 86: ...86 ...
Страница 95: ...CROSS REFERENCE CHECK THE STATUS OF THE DIGITAL BOARD 2 3 8 2 NG EXAMPLE 95 ...
Страница 96: ...2 3 8 3 CHECK THE STATUS OF THE DIGITAL BOARD 96 ...
Страница 103: ...2 3 9 7 LSU SECTION 103 ...
Страница 104: ...CROSS REFERENCE LSU Laser Scanning Unit SECTION 2 3 10 CIS contact Image Sensor SECTION 104 ...
Страница 105: ...2 3 11 HIGH VOLTAGE SECTION 105 ...
Страница 106: ...106 ...
Страница 107: ...107 ...
Страница 108: ...108 ...
Страница 109: ...109 ...
Страница 112: ...112 ...
Страница 113: ...113 ...
Страница 115: ...2 4 3 USER MODE The list below is an example of the SYSTEM SETUP LIST the unit prints out Note 115 ...
Страница 126: ...126 ...
Страница 137: ...2 8 2 Scan 137 ...
Страница 139: ...4 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 139 ...
Страница 140: ...4 3 HOW TO REMOVE THE OPERATION BOARD 140 ...
Страница 141: ...4 4 HOW TO REMOVE THE TRANSFER ROLLER AND IMAGE SENSOR 141 ...
Страница 143: ...4 7 HOW TO REMOVE THE AC INLET AND LOW VOLTAGE POWER SUPPLY BOARD 143 ...
Страница 144: ...4 8 HOW TO REMOVE THE DIGITAL BOARD AND MOTOR DRIVE BOARD 144 ...
Страница 145: ...4 9 HOW TO REMOVE THE BACK COVER SECTION 145 ...
Страница 146: ...4 10 HOW TO REMOVE THE FUSER UNIT AND HANDSET CRADLE 146 ...
Страница 147: ...4 11 HOW TO REMOVE THE MAIN FRAME AND FAN 4 12 HOW TO REMOVE THE HIGH VOLTAGE POWER SUPPLY BOARD 147 ...
Страница 148: ...4 13 HOW TO REMOVE THE HEAT ROLLER AND EXIT ROLLER 148 ...
Страница 149: ...4 14 HOW TO REMOVE THE PRESSURE ROLLER 149 ...
Страница 150: ...4 15 HOW TO REMOVE THE MOTOR BLOCK 150 ...
Страница 151: ...151 ...
Страница 152: ...152 ...
Страница 153: ...4 16 INSTALLATION POSITION OF THE LEAD 153 ...
Страница 154: ...154 ...
Страница 155: ...155 ...
Страница 156: ...156 ...
Страница 166: ...6 8 TIMING CHART When Printing Two Sheets of Paper 166 ...
Страница 172: ...6 14 Timing Chart Initializing Short 172 ...
Страница 174: ...7 CIRCUIT OPERATIONS 7 1 CONNECTION DIAGRAM 7 1 1 CONNECTION DIAGRAM 1 174 ...
Страница 175: ...7 1 2 CONNECTION DIAGRAM 2 175 ...
Страница 176: ...7 1 3 POWER SUPPLY FLOW 176 ...
Страница 181: ...7 3 2 1 ASIC IC604 PIN LAYOUT 181 ...
Страница 182: ...7 3 2 2 EXPLANATION OF PIN DISTRIBUTION 7 3 2 2 1 IC604 182 ...
Страница 217: ...217 ...
Страница 218: ...7 9 SENSORS AND SWITCHES SECTION All of the sensor and switches are shown below 218 ...
Страница 241: ...9 FIXTURES AND TOOLS 241 ...
Страница 242: ...10 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 10 1 GENERAL SECTON 242 ...
Страница 243: ...10 2 OPERATION PANEL SECTION 10 2 1 OPERATION PANEL BLOCK 1 243 ...
Страница 244: ...10 2 2 OPERATION PANEL BLOCK 2 244 ...
Страница 245: ...245 ...
Страница 246: ...10 3 CABINET P C B BLOCK 246 ...
Страница 247: ...10 4 PICK UP BLOCK 247 ...
Страница 248: ...10 5 CABINET BLOCK 248 ...
Страница 249: ...10 6 FUSER BLOCK 249 ...
Страница 250: ...10 7 MAIN FRAME BLOCK 250 ...
Страница 251: ...251 ...
Страница 252: ...10 8 MOTOR BLOCK 10 9 ACTUAL SIZE OF SCREWS AND WASHER 252 ...
Страница 253: ...11 ACCESSORIES AND PACKING MATERIALS 253 ...
Страница 254: ...254 ...
Страница 283: ...16 7 SENSOR BOARD PCB7 16 8 VARISTOR BOARD PCB8 HI Q KXFLM551 Printed in Japan 283 ...
Страница 291: ...A B C D E F G PCB CH AUTO CH CN51 1 5 P FUP1257ZA C 01 06 25 PS50 CN50 3 1 C50 COMPONENT VIEW BOTTOM VIEW ...
Страница 292: ...PCB CH J61 J60 ZNR60 01 06 25 PFUP1257ZA D COMPONENT VIEW BOTTOM VIEW ...
Страница 312: ...CN51 1 TEMP 2 GND 3 VIN 4 SIG 5 VOUT PS50 1 2 3 4 NC C50 CN50 1 THERM 2 NC 3 GND ...
Страница 313: ...ZNR60 271 ...