93
KX-FP207FX-S/FP218FX-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 dialling, 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 dialling 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.
Summary of Contents for KX-FP207FX-S
Page 10: ...10 KX FP207FX S FP218FX S 6 Technical Descriptions 6 1 Connection Diagram ...
Page 12: ...12 KX FP207FX S FP218FX S 6 2 1 General Block Diagram ...
Page 14: ...14 KX FP207FX S FP218FX S 6 3 2 Memory Map ...
Page 23: ...23 KX FP207FX S FP218FX S 6 4 2 Block Diagram ...
Page 25: ...25 KX FP207FX S FP218FX S ...
Page 44: ...44 KX FP207FX S FP218FX S 2 Signal path Refer to Check Sheet for Signal Route P 123 ...
Page 68: ...68 KX FP207FX S FP218FX S 11 2 1 2 KX FP218FX S Note The above values are the default values ...
Page 76: ...76 KX FP207FX S FP218FX S Countermeasure ...
Page 77: ...77 KX FP207FX S FP218FX S REFERENCE Test Mode P 58 ...
Page 78: ...78 KX FP207FX S FP218FX S REFERENCE Test Mode P 58 ...
Page 79: ...79 KX FP207FX S FP218FX S REFERENCE Test Mode P 58 ...
Page 80: ...80 KX FP207FX S FP218FX S REFERENCE Test Mode P 58 ...
Page 81: ...81 KX FP207FX S FP218FX S ...
Page 82: ...82 KX FP207FX S FP218FX S ...
Page 83: ...83 KX FP207FX S FP218FX S REFERENCE Test Mode P 58 ...
Page 87: ...87 KX FP207FX S FP218FX S ...
Page 112: ...112 KX FP207FX S FP218FX S ...
Page 119: ...119 KX FP207FX S FP218FX S I O and Pin No Diagram ...
Page 122: ...122 KX FP207FX S FP218FX S 12 5 5 2 NG Example ...
Page 124: ...124 KX FP207FX S FP218FX S ...
Page 129: ...129 KX FP207FX S FP218FX S 12 5 8 2 Troubleshooting Flow Chart ...
Page 135: ...135 KX FP207FX S FP218FX S 12 5 12 Thermal Head Section Note Refer to Thermal Head P 24 ...
Page 136: ...136 KX FP207FX S FP218FX S 13 Service Fixture Tools ...
Page 141: ...141 KX FP207FX S FP218FX S 14 3 2 How to Remove the Thermal Head ...
Page 142: ...142 KX FP207FX S FP218FX S ...
Page 143: ...143 KX FP207FX S FP218FX S 14 3 3 How to Remove the Bottom Frame ...
Page 144: ...144 KX FP207FX S FP218FX S 14 3 4 How to Remove the P C Boards and Speaker ...
Page 145: ...145 KX FP207FX S FP218FX S 14 3 5 How to Remove the Power Supply Board and AC cord ...
Page 146: ...146 KX FP207FX S FP218FX S 14 3 6 How to Remove the Gear Block and Separation Roller ...
Page 147: ...147 KX FP207FX S FP218FX S 14 3 7 How to Remove the Gears Motors and Arms of the Gear Block ...
Page 148: ...148 KX FP207FX S FP218FX S ...
Page 149: ...149 KX FP207FX S FP218FX S 14 3 8 How to Remove the Handset Cradle and Hook Switch Board ...
Page 150: ...150 KX FP207FX S FP218FX S 14 3 9 How to Remove the Back Cover ...
Page 151: ...151 KX FP207FX S FP218FX S 14 3 10 How to Remove the Platen Roller and Lock Lever ...
Page 152: ...152 KX FP207FX S FP218FX S ...
Page 153: ...153 KX FP207FX S FP218FX S 14 3 11 How to Remove the Pickup Roller ...
Page 154: ...154 KX FP207FX S FP218FX S 14 3 12 How to Remove the Operation Panel ...
Page 156: ...156 KX FP207FX S FP218FX S 14 3 13 2 KX FP218FX ...
Page 157: ...157 KX FP207FX S FP218FX S 14 3 14 How to Remove the Separation Holder and Exit Roller ...
Page 159: ...159 KX FP207FX S FP218FX S ...
Page 160: ...160 KX FP207FX S FP218FX S ...
Page 161: ...161 KX FP207FX S FP218FX S 14 3 15 2 Operation Panel Section KX FP207 ...
Page 162: ...162 KX FP207FX S FP218FX S 14 3 15 3 Operation Panel and Mic Board Section KX FP218 ...
Page 177: ...177 KX FP207FX S FP218FX S 16 1 4 Power Supply Board 16 1 5 Interface Board ...
Page 180: ...180 KX FP207FX S FP218FX S 16 3 Test Chart 16 3 1 ITU T No 1 Test chart ...
Page 181: ...181 KX FP207FX S FP218FX S 16 3 2 ITU T No 2 Test Chart ...
Page 182: ...182 KX FP207FX S FP218FX S 16 3 3 Test Chart ...
Page 201: ...201 KX FP207FX S FP218FX S MEMO ...
Page 212: ...212 KX FP207FX S FP218FX S 20 1 2 Operation Panel Section ...
Page 213: ...213 KX FP207FX S FP218FX S 20 1 3 Upper Cabinet Section ...
Page 214: ...214 KX FP207FX S FP218FX S 20 1 4 Back Cover Section ...
Page 215: ...215 KX FP207FX S FP218FX S ...
Page 216: ...216 KX FP207FX S FP218FX S 20 1 5 Lower Cabinet Section ...
Page 217: ...217 KX FP207FX S FP218FX S 20 1 6 Gear Block Section ...
Page 218: ...218 KX FP207FX S FP218FX S ...
Page 219: ...219 KX FP207FX S FP218FX S 20 1 7 Screws ...
Page 220: ...220 KX FP207FX S FP218FX S 20 1 8 Accessories and Packing Materials ...
Page 232: ...232 KX FP207FX S FP218FX S Y F KXFP207FX S KXFP218FX S ...