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93
KX-FC255CX-S
12.3.3.1.5. The unit can copy, but cannot either transmit/receive long distance or interna-
tional communications
The following two causes can be considered for this symptom.
Cause 1:
The other party is executing automatic dialing, the call has been received by this unit, and the CED or DIS signal response time
is too long. (In most cases, this unit detects the CNG signal and can respond to CED or DIS.) (According to the ITU-T standard,
the communication procedure is cancelled when there is no response from the other party within 35 sec, so that the other party
releases the line.)
(Cause and Countermeasure)
As shown in the chart above, the total handshaking time must be reduced, but because of the long distance connection and link-
ing of several stations, the line connection time cannot be reduced. Accordingly, the following countermeasures should be tried.
(A)... As the 35 sec. count is started directly after dialing or directly after the START button has been pressed for models with a
START button, the other party should be called manually, if possible. Another possibility is entering two pauses at the end of the
auto dial number on the transmission side. Then the count start time can be delayed for 2 pauses (about 10 sec.).
Cause 2:
Erroneous detection because of an echo or an echo canceler.
(Echo/Echo Canceler)
The signal from FAX1 reaches FAX2 via stations 1 and 2, but the reflection signal at station 2 also returns via station 1 (echo).
As the distance between station 1 and station 2 is far, the echo returns to FAX 1 at a max of 600 msec after transmission. There
is a possibility that this signal is detected erroneously as the signal from FAX2. For a normal call, there is also a possibility that
the echo of their own voice will make the call difficult to understand. For this reason, each station (station 1 and station 2)
attaches echo cancelers (S1 and S2) for international lines or long distance lines. For the echo canceler, the level of the trans-
mission signal from FAX 1 is compared with the level of the reception signal from FAX2. When the transmission signal is larger,
S1 is closed while S2 is opened when it is smaller. In other words, for transmission from FAX1, S1 is closed and S2 is open, so
that the echo does not return to FAX1.
Содержание KX-FC255CX-S
Страница 18: ...18 KX FC255CX S 6 4 2 Block Diagram ...
Страница 20: ...20 KX FC255CX S ...
Страница 34: ...34 KX FC255CX S b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format ...
Страница 56: ...56 KX FC255CX S 9 2 Cordless Handset Programming 9 2 1 Cordless Handset Features ...
Страница 57: ...57 KX FC255CX S Note Refer to Program Mode Table P 98 ...
Страница 65: ...65 KX FC255CX S 11 2 Handset ...
Страница 68: ...68 KX FC255CX S 11 3 2 Service Mode Settings Note The above values are the default values ...
Страница 76: ...76 KX FC255CX S Countermeasure ...
Страница 77: ...77 KX FC255CX S REFERENCE Test Mode P 58 ...
Страница 78: ...78 KX FC255CX S REFERENCE Test Mode P 58 ...
Страница 79: ...79 KX FC255CX S REFERENCE Test Mode P 58 ...
Страница 80: ...80 KX FC255CX S REFERENCE Test Mode P 58 ...
Страница 81: ...81 KX FC255CX S ...
Страница 82: ...82 KX FC255CX S REFERENCE Test Mode P 58 ...
Страница 83: ...83 KX FC255CX S REFERENCE Test Mode P 58 ...
Страница 87: ...87 KX FC255CX S ...
Страница 112: ...112 KX FC255CX S ...
Страница 119: ...119 KX FC255CX S I O and Pin No Diagram ...
Страница 121: ...121 KX FC255CX S Other NG example while the power is ON and the LCD displays the following ...
Страница 122: ...122 KX FC255CX S 12 5 5 2 NG Example ...
Страница 126: ...126 KX FC255CX S 12 5 7 2 Troubleshooting Flow Chart ...
Страница 132: ...132 KX FC255CX S 12 5 11 Thermal Head Section Note Refer to Thermal Head P 19 ...
Страница 140: ...140 KX FC255CX S 13 Service Fixture Tools ...
Страница 145: ...145 KX FC255CX S 14 3 Disassembly Procedure 14 3 1 How to Remove the Image Sensor CIS ...
Страница 146: ...146 KX FC255CX S 14 3 2 How to Remove the Thermal Head ...
Страница 147: ...147 KX FC255CX S ...
Страница 148: ...148 KX FC255CX S 14 3 3 How to Remove the Bottom Frame ...
Страница 149: ...149 KX FC255CX S 14 3 4 How to Remove the P C Boards and Speaker ...
Страница 150: ...150 KX FC255CX S 14 3 5 How to Remove the Power Supply Board and AC Cord ...
Страница 151: ...151 KX FC255CX S 14 3 6 How to Remove the Gear Block and Separation Roller ...
Страница 152: ...152 KX FC255CX S 14 3 7 How to Remove the Gears Motors and Arms of the Gear Block ...
Страница 153: ...153 KX FC255CX S ...
Страница 154: ...154 KX FC255CX S 14 3 8 How to Remove the Cradle and Hook Switch Board ...
Страница 155: ...155 KX FC255CX S 14 3 9 How to Remove the Back Cover ...
Страница 156: ...156 KX FC255CX S 14 3 10 How to Remove the Platen Roller and Lock Lever ...
Страница 157: ...157 KX FC255CX S ...
Страница 158: ...158 KX FC255CX S 14 3 11 How to Remove the Pickup Roller and Antenna ...
Страница 159: ...159 KX FC255CX S 14 3 12 How to Remove the Operation Panel ...
Страница 160: ...160 KX FC255CX S 14 3 13 How to Remove the Operation Board MIC Board and LCD ...
Страница 161: ...161 KX FC255CX S 14 3 14 How to Remove the Separation Holder and Exit Roller ...
Страница 162: ...162 KX FC255CX S 14 3 15 Installation Position of the Lead Wires 14 3 15 1 Lower Section ...
Страница 163: ...163 KX FC255CX S ...
Страница 164: ...164 KX FC255CX S ...
Страница 165: ...165 KX FC255CX S ...
Страница 166: ...166 KX FC255CX S 14 3 15 2 Operation Panel Section ...
Страница 167: ...167 KX FC255CX S 14 3 15 3 Back Cover Section ...
Страница 168: ...168 KX FC255CX S 14 3 16 How to Remove the Cordless Handset Board ...
Страница 169: ...169 KX FC255CX S 14 3 16 1 Fix the LCD to the Cordless Handset Board ...
Страница 170: ...170 KX FC255CX S 14 3 17 How to Remove the Charger Board ...
Страница 192: ...192 KX FC255CX S 16 2 3 4 Copying Note See Sensor Locations in Sensor and Switches P 24 REFERENCE Sensor Section P 129 ...
Страница 198: ...198 KX FC255CX S 17 1 3 Operation Board Microphone Board 17 1 4 Power Supply Board 17 1 5 Interface Board ...
Страница 199: ...199 KX FC255CX S 17 1 6 Cordless Handset Board ...
Страница 202: ...202 KX FC255CX S 17 3 Test Chart 17 3 1 ITU T No 1 Test Chart ...
Страница 203: ...203 KX FC255CX S 17 3 2 ITU T No 2 Test Chart ...
Страница 204: ...204 KX FC255CX S 17 3 3 Test Chart ...
Страница 205: ...205 KX FC255CX S MEMO ...
Страница 218: ...218 KX FC255CX S 18 11 Charger Board PCB200 TP3 G J1 2 1 TP4 TP2 TP1 10 R1 10 R3 12 R2 12 R4 KX FC255CX S Charger Board ...
Страница 236: ...236 KX FC255CX S 21 1 2 Operation Panel Section ...
Страница 237: ...237 KX FC255CX S 21 1 3 Upper Cabinet Section ...
Страница 238: ...238 KX FC255CX S 21 1 4 Back Cover Section ...
Страница 239: ...239 KX FC255CX S ...
Страница 240: ...240 KX FC255CX S 21 1 5 Lower Cabinet Section ...
Страница 241: ...241 KX FC255CX S 21 1 6 Gear Block Section ...
Страница 242: ...242 KX FC255CX S ...
Страница 244: ...244 KX FC255CX S 21 1 8 Charger Section ...
Страница 245: ...245 KX FC255CX S 21 1 9 Screws ...