2.3.5.1.5. 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.
40
KX-FT72BR-G
Содержание KX-FT72BR-G
Страница 3: ...1 1 LCD MESSAGE 1 INTRODUCTION 3 KX FT72BR G ...
Страница 8: ...1 11 TEST CHART 1 11 1 ITU T NO 1 TEST CHART 8 KX FT72BR G ...
Страница 9: ...1 11 2 CCITT NO 2 TEST CHART 9 KX FT72BR G ...
Страница 10: ...1 12 LOCATION OF CONTROLS 1 12 1 OVERVIEW 10 KX FT72BR G ...
Страница 28: ...2 3 4 2 DOCUMENT JAM CROSS REFERENCE SENSOR SECTION P 72 DISASSEMBLY INSTRUCTIONS P 84 28 KX FT72BR G ...
Страница 29: ...2 3 4 3 MULTIPLE FEED CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 84 29 KX FT72BR G ...
Страница 30: ...2 3 4 4 SKEW CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 84 30 KX FT72BR G ...
Страница 34: ...CROSS REFERENCE DISASSEMBLY INSTRUCTIONS P 84 34 KX FT72BR G ...
Страница 37: ...2 3 5 1 2 SOMETIMES THERE IS A TRANSMIT PROBLEM CROSS REFERENCE LCD MESSAGE P 3 37 KX FT72BR G ...
Страница 39: ...2 3 5 1 4 THE UNIT CAN COPY BUT CANNOT TRANSMIT RECEIVE 39 KX FT72BR G ...
Страница 45: ...45 KX FT72BR G ...
Страница 46: ...CROSS REFERENCE TEST FUNCTIONS P 82 46 KX FT72BR G ...
Страница 47: ...CROSS REFERENCE TEST FUNCTIONS P 82 47 KX FT72BR G ...
Страница 48: ...48 KX FT72BR G ...
Страница 49: ...CROSS REFERENCE TEST FUNCTIONS P 82 CROSS REFERENCE TEST FUNCTIONS P 82 49 KX FT72BR G ...
Страница 50: ...50 KX FT72BR G ...
Страница 51: ...51 KX FT72BR G ...
Страница 52: ...CROSS REFERENCE TEST FUNCTIONS P 82 52 KX FT72BR G ...
Страница 58: ...58 KX FT72BR G ...
Страница 59: ...Normal Wave Patterns 59 KX FT72BR G ...
Страница 61: ...CROSS REFERENCE NG EXAMPLE P 63 CHECK THE STATUS OF THE DIGITAL BOARD P 64 61 KX FT72BR G ...
Страница 62: ...CROSS REFERENCE CHECK THE STATUS OF THE DIGITAL BOARD P 64 62 KX FT72BR G ...
Страница 63: ...2 3 6 2 NG EXAMPLE 63 KX FT72BR G ...
Страница 66: ...2 3 7 2 DEFECTIVE ITS INTEGRATED TELEPHONE SYSTEM SECTION 66 KX FT72BR G ...
Страница 68: ...2 Troubleshooting Flow Chart 68 KX FT72BR G ...
Страница 69: ...69 KX FT72BR G ...
Страница 73: ...2 3 11 READ SECTION Refer to SCANNING BLOCK P 112 73 KX FT72BR G ...
Страница 79: ...2 4 5 SERVICE MODE SETTINGS Example of a printed out list 79 KX FT72BR G ...
Страница 84: ...3 DISASSEMBLY INSTRUCTIONS 3 1 HOW TO REMOVE THE HANDSET CRADLE CABINET HOOK BUTTON AND SPEAKER 84 KX FT72BR G ...
Страница 85: ...3 2 HOW TO REMOVE THE OPERATION BLOCK 85 KX FT72BR G ...
Страница 86: ...3 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 86 KX FT72BR G ...
Страница 87: ...3 4 HOW TO REMOVE THE BOTTOM FRAME AND ANALOG BOARD 87 KX FT72BR G ...
Страница 88: ...3 5 HOW TO REMOVE THE DIGITAL POWER SUPPLY BOARD AND AC INLET 88 KX FT72BR G ...
Страница 89: ...3 6 HOW TO REMOVE THE MOTOR BLOCK AND SEPARATION ROLLER 89 KX FT72BR G ...
Страница 90: ...3 7 HOW TO REMOVE THE MOTOR AND GEARS OF MOTOR BLOCK 90 KX FT72BR G ...
Страница 91: ...3 8 HOW TO REMOVE THE IMAGE SENSOR CIS 91 KX FT72BR G ...
Страница 92: ...3 9 HOW TO REMOVE THE DOCUMENT FEED ROLLER 92 KX FT72BR G ...
Страница 93: ...3 10 HOW TO REMOVE THE THERMAL HEAD 93 KX FT72BR G ...
Страница 94: ...3 11 INSTALLATION POSITION OF THE LEAD WIRES 94 KX FT72BR G ...
Страница 96: ...4 3 FLAT PACKAGE IC INSTALLATION PROCEDURE 4 4 BRIDGE MODIFICATION PROCEDURE 96 KX FT72BR G ...
Страница 97: ...5 CIRCUIT OPERATIONS 5 1 CONNECTION DIAGRAM 97 KX FT72BR G ...
Страница 99: ...5 2 1 General Block Diagram 99 KX FT72BR G ...
Страница 109: ...5 4 2 BLOCK DIAGRAM 109 KX FT72BR G ...
Страница 111: ...111 KX FT72BR G ...
Страница 117: ...5 4 6 3 4 COPYING CROSS REFERENCE SENSOR SECTION P 72 117 KX FT72BR G ...
Страница 126: ...b Redundancy Compression Process Coding Mode This unit uses one dimensional MH format 126 KX FT72BR G ...
Страница 132: ...5 10 1 CIRCUIT DIAGRAM 132 KX FT72BR G ...
Страница 135: ...5 12 POWER SUPPLY BOARD SECTION 135 KX FT72BR G ...
Страница 137: ...6 TERMINAL GUIDE OF THE ICs TRANSISTORS AND DIODES 137 KX FT72BR G ...
Страница 138: ...7 FIXTURES AND TOOLS 138 KX FT72BR G ...
Страница 139: ...8 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 8 1 OPERATION PANEL SECTION 139 KX FT72BR G ...
Страница 140: ...8 2 UPPER CABINET SECTION 140 KX FT72BR G ...
Страница 141: ...8 3 LOWER CABINET P C B SECTION CROSS REFFERENCE MOTOR SECTION P 142 141 KX FT72BR G ...
Страница 142: ...8 4 MOTOR SECTION 142 KX FT72BR G ...
Страница 143: ...8 5 ACTUAL SIZE OF SCREWS 143 KX FT72BR G ...
Страница 144: ...9 ACCESSORIES AND PACKING MATERIALS 144 KX FT72BR G ...
Страница 163: ...163 KX FT72BR G Y M KXFT72BRG ...