7.3.3. MODEM CIRCUIT OPERATION
The modem (IC607) has all the hardware satisfying the CCITT standards mentioned previously.
When the ASIC IC600 is brought to a low level, the modem (IC607) is chip-selected and the resistors inside IC are selected by the
select signals from ASIC (IC600) A[0]-A[5]. Commands are written through the data bus, and all processing is controlled by the
ASIC (IC600) according to CCITT procedures. Here, the INT signal dispatched from IRQ (pin 1 of IC607) to the ASIC (IC606)
implements post processing.
This modem (IC607) has an automatic application equalizer. With training signal 1 or 2 at the time of G3 reception, it can
automatically establish the optimum equalizer. The modem (IC607) operates using the 28.224MHz clock (X604).
1.
Facsimile Transmission/DTMF Line Send
The digital image data on the data bus is modulated in the modem (IC607), and sent from pin 25, 26 via modem IC607, Analog
gate array IC209(24
→
22), amplifier IC204(6
→
7) and the NCU section to the telephone line.
Refer to
CHECK SHEET
(P.158).
2.
Facsimile Reception
The analog image data which is received from the telephone line passes through the NCU section and enters pin 29 of the
modem (IC607). The signals that enter pin 29 of the modem (IC607) are demodulated in the board to digital image signals, then
placed on the data bus.
In this case, the image signals from the telephone line are transmitted serially. Hence, they are placed on the bus in 8 bit units.
Here, the internal equalizer circuit reduces the image signals to a long-distance receiving level.
This is designed to correct the characteristics of the frequency band centered around 3 kHz and maintain a constant receiving
sensitivity.
It can be set in the service mode.
Refer to
CHECK SHEET
(P.158).
3.
DTMF Transmission (Monitor tone)
The DTMF signal generated in the modem (IC607) is output from pin 25, 26 and the NCU section to the telephone line the same
as facsimile transmission signals.
(DTMF Monitor Tone)
Refer to
CHECK SHEET
(P.158).
4.
Busy/Dial Tone Detection
The path is the same as FAX receiving. When it is detected, the carrier detect bit of the resistor in the modem (IC607) becomes
1, and this status is monitored by ASIC (IC600).
5.
Call Tone Transmission
This is the call signal which is generated the ASIC (IC604) and sent to the speaker.
209
KX-FLB852CX / KX-FLB852CXS
Содержание KX-FLB852CX
Страница 28: ...3 3 9 SETTING YOUR LOGO The logo can be your name or the name of your company 28 KX FLB852CX KX FLB852CXS ...
Страница 53: ...5 1 LOWER CABINET SECTION 53 KX FLB852CX KX FLB852CXS ...
Страница 54: ...5 2 PRINTER COVER SECTION 54 KX FLB852CX KX FLB852CXS ...
Страница 55: ...5 3 ADF SECTION 5 4 INNER CABINET SECTION 55 KX FLB852CX KX FLB852CXS ...
Страница 56: ...5 5 REMOVE THE ADF UNIT 56 KX FLB852CX KX FLB852CXS ...
Страница 57: ...5 6 REMOVE THE ADF PARTS 1 57 KX FLB852CX KX FLB852CXS ...
Страница 58: ...5 7 REMOVE THE REAR PANEL 5 8 REMOVE THE ADF PARTS 2 58 KX FLB852CX KX FLB852CXS ...
Страница 59: ...5 9 REMOVE THE BOTTOM PLATE 5 10 REMOVE THE ANALOG BOARD 59 KX FLB852CX KX FLB852CXS ...
Страница 61: ...5 13 REMOVE THE DIGITAL BOARD 5 14 REMOVE THE LASER UNIT AND THE SHUTTER 61 KX FLB852CX KX FLB852CXS ...
Страница 62: ...5 15 REMOVE THE REAR CABINET PARTS 62 KX FLB852CX KX FLB852CXS ...
Страница 63: ...5 16 REMOVE THE PRINTER COVER 63 KX FLB852CX KX FLB852CXS ...
Страница 64: ...5 17 REMOVE THE GEAR CHASSIS AND GEAR SECTION 64 KX FLB852CX KX FLB852CXS ...
Страница 65: ...5 18 REMOVE THE LOWER PRINTER COVER PARTS 65 KX FLB852CX KX FLB852CXS ...
Страница 66: ...5 19 REMOVE THE MULTI ROLLER SECTION 66 KX FLB852CX KX FLB852CXS ...
Страница 68: ...5 22 REMOVE THE OPERATION PANEL 68 KX FLB852CX KX FLB852CXS ...
Страница 69: ...5 23 REMOVE THE SCANNER COVER 69 KX FLB852CX KX FLB852CXS ...
Страница 70: ...5 24 REMOVE THE SCANNER SECTION PARTS 70 KX FLB852CX KX FLB852CXS ...
Страница 71: ...5 25 REMOVE THE FUSER UNIT AND LOWER GLASS 71 KX FLB852CX KX FLB852CXS ...
Страница 72: ...5 26 REMOVE THE FUSER UNIT PARTS 72 KX FLB852CX KX FLB852CXS ...
Страница 75: ...5 28 INSTALLATION POSITION OF THE LEAD 5 28 1 ADF SECTION 1 5 28 2 ADF SECTION 2 75 KX FLB852CX KX FLB852CXS ...
Страница 76: ...5 28 3 PRINTER COVER INNER 76 KX FLB852CX KX FLB852CXS ...
Страница 77: ...5 28 4 PRINTER COVER BOTTOM 77 KX FLB852CX KX FLB852CXS ...
Страница 78: ...5 28 5 BOTTOM SECTION 1 78 KX FLB852CX KX FLB852CXS ...
Страница 79: ...5 28 6 BOTTOM SECTION 2 79 KX FLB852CX KX FLB852CXS ...
Страница 80: ...5 28 7 REAR SECTION 80 KX FLB852CX KX FLB852CXS ...
Страница 100: ...6 5 3 USER MODE The list below is an example of the SYSTEM SETUP LIST the unit prints out 100 KX FLB852CX KX FLB852CXS ...
Страница 116: ...116 KX FLB852CX KX FLB852CXS ...
Страница 121: ...6 6 7 3 DARK OR WHITE HORIZONTAL LINE CROSS REFERENCE HIGH VOLTAGE SECTION P 176 121 KX FLB852CX KX FLB852CXS ...
Страница 122: ...6 6 7 4 DIRTY OR HALF DARKNESS BACKGROUND CROSS REFERENCE HIGH VOLTAGE SECTION P 176 122 KX FLB852CX KX FLB852CXS ...
Страница 123: ...6 6 7 5 BLACK PRINT CROSS REFERENCE HIGH VOLTAGE SECTION P 176 LSU SECTION P 170 123 KX FLB852CX KX FLB852CXS ...
Страница 124: ...6 6 7 6 LIGHT PRINT CROSS REFERENCE HIGH VOLTAGE SECTION P 176 124 KX FLB852CX KX FLB852CXS ...
Страница 125: ...6 6 7 7 BLACK OR WHITE POINT 6 6 8 RECORDING PAPER FEED 6 6 8 1 MULTIPLE FEED 125 KX FLB852CX KX FLB852CXS ...
Страница 126: ...6 6 8 2 THE RECORDING PAPER IS WAVED OR WRINKLED 126 KX FLB852CX KX FLB852CXS ...
Страница 127: ...6 6 8 3 SKEW 127 KX FLB852CX KX FLB852CXS ...
Страница 129: ...6 6 8 5 THE RECORDING PAPER JAM 129 KX FLB852CX KX FLB852CXS ...
Страница 133: ...CROSS REFERENCE MOTOR SECTION P 168 133 KX FLB852CX KX FLB852CXS ...
Страница 134: ...6 6 9 2 SKEW ADF 134 KX FLB852CX KX FLB852CXS ...
Страница 136: ...6 6 9 5 THE RECEIVED OR COPIED DATA IS EXPANDED 136 KX FLB852CX KX FLB852CXS ...
Страница 137: ...6 6 9 6 BLACK OR WHITE VERTICAL LINE IS COPIED 137 KX FLB852CX KX FLB852CXS ...
Страница 138: ...6 6 9 7 AN ABNORMAL IMAGE IS COPIED CROSS REFERENCE CCD CONTROL SECTION P 171 138 KX FLB852CX KX FLB852CXS ...
Страница 147: ...147 KX FLB852CX KX FLB852CXS ...
Страница 149: ...Note If the problem remains see the following Countermeasure flow chart 149 KX FLB852CX KX FLB852CXS ...
Страница 150: ...CROSS REFERENCE TEST FUNCTIONS P 88 150 KX FLB852CX KX FLB852CXS ...
Страница 151: ...CROSS REFERENCE TEST FUNCTIONS P 88 151 KX FLB852CX KX FLB852CXS ...
Страница 152: ...CROSS REFERENCE TEST FUNCTIONS P 88 152 KX FLB852CX KX FLB852CXS ...
Страница 153: ...CROSS REFERENCE TEST FUNCTIONS P 88 153 KX FLB852CX KX FLB852CXS ...
Страница 154: ...154 KX FLB852CX KX FLB852CXS ...
Страница 155: ...155 KX FLB852CX KX FLB852CXS ...
Страница 156: ...CROSS REFERENCE TEST FUNCTIONS P 88 156 KX FLB852CX KX FLB852CXS ...
Страница 168: ...6 6 13 6 MOTOR SECTION 6 6 13 6 1 FB Flat Bed MOTOR 168 KX FLB852CX KX FLB852CXS ...
Страница 169: ...6 6 13 6 2 ADF MOTOR 169 KX FLB852CX KX FLB852CXS ...
Страница 170: ...6 6 13 7 LSU SECTION CROSS REFERENCE LSU Laser Scanning Unit SECTION P 235 170 KX FLB852CX KX FLB852CXS ...
Страница 171: ...6 6 14 CCD CONTROL SECTION CROSS REFERENCE TEST FUNCTIONS P 88 171 KX FLB852CX KX FLB852CXS ...
Страница 172: ...172 KX FLB852CX KX FLB852CXS ...
Страница 175: ...175 KX FLB852CX KX FLB852CXS ...
Страница 176: ...6 6 17 HIGH VOLTAGE SECTION 1 Main 176 KX FLB852CX KX FLB852CXS ...
Страница 177: ...2 CHG GRID 177 KX FLB852CX KX FLB852CXS ...
Страница 178: ...3 DEV DC 3 TRA 178 KX FLB852CX KX FLB852CXS ...
Страница 179: ...179 KX FLB852CX KX FLB852CXS ...
Страница 180: ...4 DEV AC 180 KX FLB852CX KX FLB852CXS ...
Страница 181: ...TRA 181 KX FLB852CX KX FLB852CXS ...
Страница 182: ...6 6 18 LAN SECTION 182 KX FLB852CX KX FLB852CXS ...
Страница 185: ...3 When 10Base T enabled device is connected 185 KX FLB852CX KX FLB852CXS ...
Страница 189: ...6 6 19 USB SECTION Troubleshooting 1 Confirmation of the PC settings 189 KX FLB852CX KX FLB852CXS ...
Страница 190: ...2 Confirmation of the digital unit 190 KX FLB852CX KX FLB852CXS ...
Страница 192: ...Waveform of normal operation 192 KX FLB852CX KX FLB852CXS ...
Страница 194: ...6 6 20 2 TROUBLESHOOTING FLOW CHART 194 KX FLB852CX KX FLB852CXS ...
Страница 196: ...7 CIRCUIT OPERATIONS 7 1 CONNECTION DIAGRAM 196 KX FLB852CX KX FLB852CXS ...
Страница 220: ...7 7 1 1 ENGINE MOTOR DRIVE CIRCUIT 220 KX FLB852CX KX FLB852CXS ...
Страница 221: ...7 7 1 2 ENGINE MOTOR 221 KX FLB852CX KX FLB852CXS ...
Страница 223: ...223 KX FLB852CX KX FLB852CXS ...
Страница 224: ...7 7 2 2 ADF Auto Document Feed MOTOR DRIVE CIRCUIT 224 KX FLB852CX KX FLB852CXS ...
Страница 226: ...226 KX FLB852CX KX FLB852CXS ...
Страница 227: ...7 7 3 2 FB Flat Bed MOTOR DRIVE CIRCUIT 227 KX FLB852CX KX FLB852CXS ...
Страница 235: ...7 11 LSU Laser Scanning Unit SECTION 235 KX FLB852CX KX FLB852CXS ...
Страница 236: ...236 KX FLB852CX KX FLB852CXS ...
Страница 248: ...7 12 18 2 Drum Detection 248 KX FLB852CX KX FLB852CXS ...
Страница 271: ...8 2 3 OPERATION BOARD 8 2 4 AFE BOARD 8 2 5 LAN BOARD 8 2 6 CASSETTE RELAY BOARD 271 KX FLB852CX KX FLB852CXS ...
Страница 272: ...8 2 7 HIGH VOLTAGE POWER SUPPLY BOARD 272 KX FLB852CX KX FLB852CXS ...
Страница 273: ...8 2 8 LOW VOLTAGE POWER SUPPLY BOARD 273 KX FLB852CX KX FLB852CXS ...
Страница 276: ...8 4 1 NG EXAMPLE 276 KX FLB852CX KX FLB852CXS ...
Страница 282: ...282 KX FLB852CX KX FLB852CXS ...
Страница 283: ...8 6 TEST CHART 8 6 1 ITU T No 1 TEST CHART 283 KX FLB852CX KX FLB852CXS ...
Страница 284: ...8 6 2 ITU T No 2 TEST CHART 284 KX FLB852CX KX FLB852CXS ...
Страница 285: ...9 FIXTURES AND TOOLS 285 KX FLB852CX KX FLB852CXS ...
Страница 286: ...10 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 10 1 OPERATION PANEL SECTION 286 KX FLB852CX KX FLB852CXS ...
Страница 287: ...10 2 PRINTER COVER SECTION 1 287 KX FLB852CX KX FLB852CXS ...
Страница 288: ...10 3 PRINTER COVER SECTION 2 288 KX FLB852CX KX FLB852CXS ...
Страница 289: ...10 4 ADF SECTION 289 KX FLB852CX KX FLB852CXS ...
Страница 290: ...10 5 PRINTER COVER SECTION 3 290 KX FLB852CX KX FLB852CXS ...
Страница 291: ...10 6 MANUAL TRAY SECTION 291 KX FLB852CX KX FLB852CXS ...
Страница 292: ...10 7 MULTI ROLLER SECTION 292 KX FLB852CX KX FLB852CXS ...
Страница 293: ...10 8 UPPER MAIN CABINET SECTION 293 KX FLB852CX KX FLB852CXS ...
Страница 294: ...10 9 FUSER SECTION 294 KX FLB852CX KX FLB852CXS ...
Страница 295: ...10 10 REAR COVER SECTION 295 KX FLB852CX KX FLB852CXS ...
Страница 296: ...10 11 MOTOR SECTION 296 KX FLB852CX KX FLB852CXS ...
Страница 297: ...10 12 GEAR CHASSIS SECTION 297 KX FLB852CX KX FLB852CXS ...
Страница 298: ...10 13 LOWER MAIN CABINET SECTION 298 KX FLB852CX KX FLB852CXS ...
Страница 299: ...10 14 SORTER FRAME AND DOCUMENT TRAY SECTION 299 KX FLB852CX KX FLB852CXS ...
Страница 300: ...10 15 CASSETTE SECTION 300 KX FLB852CX KX FLB852CXS ...
Страница 301: ...10 16 SORTER SIDE SECTION 301 KX FLB852CX KX FLB852CXS ...
Страница 302: ...10 17 SCREW AND LEAD WIRE LAYOUT OF SORTER 302 KX FLB852CX KX FLB852CXS ...
Страница 303: ...10 18 SORTER MAIN SECTION 303 KX FLB852CX KX FLB852CXS ...
Страница 304: ...10 19 SORTER TOP SECTION 304 KX FLB852CX KX FLB852CXS ...
Страница 305: ...10 20 HANDSET CRADLE SECTION 305 KX FLB852CX KX FLB852CXS ...
Страница 306: ...10 21 KX FA101E KX FA101A PAPER CASSETTE SECTION OPTION 306 KX FLB852CX KX FLB852CXS ...
Страница 307: ...10 21 1 FRAME SECTION 1 307 KX FLB852CX KX FLB852CXS ...
Страница 308: ...10 21 2 FRAME SECTION 2 308 KX FLB852CX KX FLB852CXS ...
Страница 309: ...10 21 3 LOWER CASSETTE SECTION 309 KX FLB852CX KX FLB852CXS ...
Страница 310: ...10 22 KX FA102E LAN BOARD OPTION 310 KX FLB852CX KX FLB852CXS ...
Страница 311: ...10 23 ACTUAL SIZE OF SCREWS AND WASHER 311 KX FLB852CX KX FLB852CXS ...
Страница 312: ...11 ACCESSORIES AND PACKING MATERIALS 312 KX FLB852CX KX FLB852CXS ...
Страница 334: ...MEMO 334 KX FLB852CX KX FLB852CXS ...
Страница 370: ...370 KX FLB852CX KX FLB852CXS HI Q KXFLB852CX ...