7.5.5.1.5. UNIT CAN COPY, BUT CANNOT TRANSMIT/RECEIVE LONG DISTANCE OR
INTERNATIONAL COMMUNICATIONS
The following 2 causes can be considered for this.
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 the CED or DIS.) (According to the ITU-
T standard, the communication procedure is stopped 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. Long distance connection and linking of several
stations means the line connection time cannot be reduced. Accordingly, the following countermeasures should be attempted.
(A) The TEL/FAX DELAYED RING count should be 1. (User parameter: code No. 78)
(B) As the 35 sec. count starts 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
will be delayed for 2 pauses (about 10 sec.).
Cause 2:
Erroneous detection due to an echo or echo canceler.
(Echo/Echo Canceler)
The signal from FAX1 reaches FAX2 via the 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 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
a possibility that the echo of their own voice will make the call difficult to understand. For this reason, each station (station 1,
station 2) attaches echo cancellers (S1, S2) for international lines or long distance lines. For the echo canceller, the level of the
transmission signal from FAX 1 is compared with the level of the reception signal from FAX2. When the S1 is closed and S2
is open, so that the echo does not return to FAX1.
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KX-FT907BX-B / KX-FT907BX-W
Summary of Contents for KX-FT907BX-B
Page 25: ...6 DISASSEMBLY INSTRUCTIONS 6 1 HOW TO REMOVE PAPER STACKER 25 KX FT907BX B KX FT907BX W ...
Page 26: ...6 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 26 KX FT907BX B KX FT907BX W ...
Page 27: ...6 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 27 KX FT907BX B KX FT907BX W ...
Page 28: ...6 4 HOW TO REMOVE THE IMAGE SENSOR 28 KX FT907BX B KX FT907BX W ...
Page 29: ...6 5 HOW TO REMOVE THE THERMAL HEAD AND CUTTER UNIT 29 KX FT907BX B KX FT907BX W ...
Page 30: ...6 6 HOW TO REMOVE THE DOCUMENT TRAY 30 KX FT907BX B KX FT907BX W ...
Page 31: ...6 7 HOW TO REMOVE THE BOTTOM FRAME 31 KX FT907BX B KX FT907BX W ...
Page 32: ...6 8 HOW TO REMOVE THE HANDSET CRADLE CABINET AND SPEAKER 32 KX FT907BX B KX FT907BX W ...
Page 34: ...6 10 HOW TO REMOVE THE ROLLERS 34 KX FT907BX B KX FT907BX W ...
Page 35: ...6 11 HOW TO REMOVE THE MOTOR BLOCK 35 KX FT907BX B KX FT907BX W ...
Page 37: ...37 KX FT907BX B KX FT907BX W ...
Page 38: ...6 12 INSTALLATION POSITION OF THE LEAD WIRES 38 KX FT907BX B KX FT907BX W ...
Page 39: ...6 13 INSTALLATION OF THERMAL HEAD 39 KX FT907BX B KX FT907BX W ...
Page 51: ...7 4 6 SERVICE MODE SETTINGS Example of a printed out list 51 KX FT907BX B KX FT907BX W ...
Page 57: ...7 5 4 4 SKEW CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 25 57 KX FT907BX B KX FT907BX W ...
Page 63: ...7 5 5 1 2 SOMETIMES THERE IS A TRANSMIT PROBLEM 63 KX FT907BX B KX FT907BX W ...
Page 65: ...7 5 5 1 4 THE UNIT CAN COPY BUT CANNOT TRANSMIT RECEIVE 65 KX FT907BX B KX FT907BX W ...
Page 72: ...Countermeasure 72 KX FT907BX B KX FT907BX W ...
Page 73: ...73 KX FT907BX B KX FT907BX W ...
Page 74: ...74 KX FT907BX B KX FT907BX W ...
Page 75: ...75 KX FT907BX B KX FT907BX W ...
Page 76: ...76 KX FT907BX B KX FT907BX W ...
Page 77: ...77 KX FT907BX B KX FT907BX W ...
Page 78: ...78 KX FT907BX B KX FT907BX W ...
Page 79: ...79 KX FT907BX B KX FT907BX W ...
Page 84: ...84 KX FT907BX B KX FT907BX W ...
Page 87: ...87 KX FT907BX B KX FT907BX W ...
Page 90: ...7 5 8 3 NG EXAMPLE 90 KX FT907BX B KX FT907BX W ...
Page 92: ...92 KX FT907BX B KX FT907BX W ...
Page 94: ...Note Inside the digital board Inside the operation board 94 KX FT907BX B KX FT907BX W ...
Page 95: ...7 5 9 2 DEFECTIVE ITS INTEGRATED TELEPHONE SYSTEM SECTION 95 KX FT907BX B KX FT907BX W ...
Page 97: ...2 Troubleshooting Flow Chart 97 KX FT907BX B KX FT907BX W ...
Page 101: ...CROSS REFERENCE TEST FUNCTIONS P 45 101 KX FT907BX B KX FT907BX W ...
Page 103: ...8 CIRCUIT OPERATIONS 8 1 CONNECTION DIAGRAM 103 KX FT907BX B KX FT907BX W ...
Page 105: ...8 2 1 GENERAL BLOCK DIAGRAM 105 KX FT907BX B KX FT907BX W ...
Page 114: ...8 4 2 BLOCK DIAGRAM 114 KX FT907BX B KX FT907BX W ...
Page 116: ...116 KX FT907BX B KX FT907BX W ...
Page 122: ...8 4 6 3 4 COPYING CROSS REFERENCE SENSOR SECTION P 100 122 KX FT907BX B KX FT907BX W ...
Page 138: ...8 10 2 CIRCUIT DIAGRAM 138 KX FT907BX B KX FT907BX W ...
Page 148: ...Refer to ANALOG BOARD SECTION P 93 148 KX FT907BX B KX FT907BX W ...
Page 149: ...9 3 TEST CHART 9 3 1 ITU T No 1 TEST CHART 149 KX FT907BX B KX FT907BX W ...
Page 150: ...9 3 2 ITU T No 2 TEST CHART 150 KX FT907BX B KX FT907BX W ...
Page 151: ...10 FIXTURES AND TOOLS 151 KX FT907BX B KX FT907BX W ...
Page 152: ...11 CABINET MECHANICAL 11 1 OPERATION PANEL SECTION 152 KX FT907BX B KX FT907BX W ...
Page 153: ...11 2 UPPER CABINET SECTION 153 KX FT907BX B KX FT907BX W ...
Page 154: ...11 3 LOWER CABINET CROSS REFERENCE MOTOR SECTION P 155 154 KX FT907BX B KX FT907BX W ...
Page 155: ...11 4 MOTOR SECTION 155 KX FT907BX B KX FT907BX W ...
Page 156: ...11 5 ACTUAL SIZE OF SCREWS 156 KX FT907BX B KX FT907BX W ...
Page 157: ...12 ACCESSORIES AND PACKING MATERIALS 157 KX FT907BX B KX FT907BX W ...
Page 173: ...16 MEMO 173 KX FT907BX B KX FT907BX W ...
Page 180: ...180 KX FT907BX B KX FT907BX W Y M KXFT907BXB KXFT907BXW ...