OFF, the transmission side will try the training signal three times at each speed (9600BPS,
4800BPS and 2400BPS). If NG, it will drop the speed by one rank (fall-back). When the
international mode is switched ON, each speed will be tried only twice. In other words, the slower
speed with fewer errors can be accessed more easily. This is done because the line conditions
may deteriorate and the picture may be disturbed more easily during communication for
international lines or long distance communication, even when the training is OK. The default
value is ON as preference is given to clearer pictures rather than speed.
(Cause B)
The echo canceler operation stops with a 2100Hz signal. (i.e. S1 and S2 become ON).
Accordingly, when FAX1 has executed automatic reception, a CED signal is output. If this signal
is 2100Hz, S1 and S2 will become ON. Then the echo of the DIS signal output afterwards may be
received and FAX1 may execute an erroneous operation, preventing communication from
starting.
(Countermeasure B)
In the service mode, the CED signal frequency is set to 1100 Hz (code No.520), or the time setting
between the CED signal and the DIS signal is set from 75 msec to 500 msec in the service mode
(code No.593). This is because the echo canceler operation stop mode is canceled by an interval
of 250 msec or more. / Reduce receiving sensitivity to reduce the effect of RCV echo signal.
(Service mode: code No. 598)
(Cause C)
This model is FAX1 and the other party is FAX2.
For transmission from this model to FAX2, FAX2 executes automatic reception and transmits a
CED signal (2100 Hz) followed by a DIS signal. As the echo cancelers stops as described in cause
B, the echo of the DIS signal returns to FAX2. On the other hand, this model detects the DIS
signal and transmits a DCS signal. In other words, it is possible that the echo of the DIS signal
and the DCS signal transmitted from this model reach FAX2 one after the other. FAX2 detects an
error and communication does not start.
(Countermeasure C)
When the international DIS detection setting is set in the service mode (code No.594), this model
does not respond to the first DIS signal and returns a DCS signal only for the second DIS signal.
In other words, there is an interval of 250 msec between transmission of the first and second DIS
signal so that the echo cancelers operation recovers. An echo is not generated for the second
DIS signal.
Note:
When the other FAX does not respond with a DCS signal after DIS signal transmission, the DIS
signal is transmitted three times for trial.
Summary:
Symptom/Countermeasure Table (Long distance and international communication operations)
67
Содержание KX-FP80C
Страница 9: ...1 10 OPTIONAL ACCESSORIES 1 11 TEST CHART 1 11 1 ITU T No 1 TEST CHART 9 ...
Страница 10: ...1 11 2 ITU T No 2 TEST CHART 10 ...
Страница 11: ...1 12 LOCATION OF CONTROLS 1 12 1 OVERVIEW 11 ...
Страница 24: ...2 Push the back cover open button and open the back cover 24 ...
Страница 30: ...1 15 2 1 MAINTENANCE LIST 30 ...
Страница 38: ...Note Do not pull out the jammed paper forcibly before opening the front cover 38 ...
Страница 40: ...2 Push the back cover open button and open the back cover 40 ...
Страница 45: ...CROSS REFERENCE 2 5 TEST FUNCTIONS 2 3 4 ADF Auto Document Feed SECTION 2 3 4 1 NO DOCUMENT FEED 45 ...
Страница 49: ... Fig B 2 3 4 3 DOCUMENT JAM CROSS REFERENCE 2 3 10 SENSOR SECTION 4 DISASSEMBLY INSTRUCTIONS 2 3 4 4 SKEW 49 ...
Страница 56: ...Fig C 2 3 4 12 ABLANK PAGE IS RECEIVED 56 ...
Страница 71: ...71 ...
Страница 72: ...CROSS REFERENCE 2 5 TEST FUNCTIONS 72 ...
Страница 73: ...CROSS REFERENCE 2 5 TEST FUNCTIONS 73 ...
Страница 74: ...CROSS REFERENCE 2 5 TEST FUNCTIONS 74 ...
Страница 75: ...CROSS REFERENCE 2 5 TEST FUNCTIONS 75 ...
Страница 76: ...76 ...
Страница 77: ...77 ...
Страница 78: ...78 ...
Страница 90: ...2 3 6 3 CHECK THE STATUS OF THE DIGITAL BOARD 90 ...
Страница 93: ...3 No ring tone or No bell CROSS REFERENCE 2 3 7 1 CHECK SHEET 93 ...
Страница 96: ...2 3 8 2 TOROUBLESHOOTING FLOW CHART 96 ...
Страница 97: ...97 ...
Страница 98: ...98 ...
Страница 102: ...CROSS REFERENCE 2 5 TEST FUNCTIONS 102 ...
Страница 103: ...2 3 12 THERMAL HEAD SECTION Refer to 6 4 3 THERMAL HEAD 103 ...
Страница 105: ...2 4 3 USER MODE The list below is an example of the SYSTEM SETUP LIST the unit prints out 105 ...
Страница 106: ...Note The above values are the default values 2 4 4 SERVICE FUNCTION TABLE 106 ...
Страница 117: ...117 ...
Страница 119: ...CROSS REFERENCE 2 5 1 DTMF SINGLE TONE TRANSMIT SELECTION 2 5 2 BUTTON CODE TABLE 2 5 3 PRINT TEST PATTERN 119 ...
Страница 122: ...2 Left margin Top margin Reference pattern 122 ...
Страница 123: ...3 Thermal head 1 dot Reference pattern 123 ...
Страница 124: ...4 Use this test pattern to confirm the torque limiter for Ink film and platen roller timing Reference pattern 124 ...
Страница 127: ...4 2 HOW TO REMOVE THE OPERATION PANEL BLOCK 127 ...
Страница 128: ...4 3 HOW TO REMOVE THE OPERATION BOARD AND LCD 128 ...
Страница 129: ...4 4 HOW TO REMOVE THE ANALOG DIGITAL AND POWER BOARDS AND AC INLET 129 ...
Страница 130: ...4 5 HOW TO REMOVE THE MOTOR BLOCK 130 ...
Страница 131: ...131 ...
Страница 132: ...4 6 HOW TO REMOVE THE SEPARATION ROLLER 132 ...
Страница 133: ...4 7 HOW TO REMOVE THE IMAGE SENSOR CIS 133 ...
Страница 134: ...4 8 HOW TO REMOVE THE TERMAL HEAD 134 ...
Страница 135: ...4 9 HOW TO REMOVE THE PLATEN ROLLER BACK COVER 135 ...
Страница 136: ...4 10 HOW TO REMOVE THE PICKUP ROLLER 136 ...
Страница 137: ...4 11 HOW TO REMOVE THE CASSETTE PLATE 137 ...
Страница 138: ...4 12 HOW TO REMOVE THE DOCUMENT TRAY 138 ...
Страница 139: ...4 13 INSTALLATION POSITION OF THE LEAD WIRES 139 ...
Страница 146: ...6 7 1 ANALOG UNIT BLOCK DIAGRAM 6 3 CONTROL SECTION 6 3 1 BLOCK DIAGRAM 6 3 2 MEMORY MAP 146 ...
Страница 147: ...6 3 3 ASIC IC501 This custom IC is used for the general FAX operations 147 ...
Страница 149: ...149 ...
Страница 152: ...58 TEST3 I 5V HIGH FIXED 152 ...
Страница 154: ...102 RBA4 O 5V ROM RAM BANK ADDRESS 4 154 ...
Страница 170: ...Note See Sensor Locations in 6 5 SENSORS AND SWITCHES 6 4 6 3 2 TRANSMITTING DOCUMENTS 170 ...
Страница 171: ...CROSS REFERENCE 2 3 10 SENSOR SECTION 6 4 6 3 3 RECEIVING FAX 171 ...
Страница 172: ...Note See Sensor Locations in 6 5 SENSORS AND SWITCHES 6 4 6 3 4 COPYING 172 ...
Страница 196: ...AND DIODES 8 FIXTURES AND TOOLS 196 ...
Страница 197: ...9 CABINET MECHANICAL AND ELECTRICAL PARTS LOCATION 9 1 OPERATION PANEL SECTION 197 ...
Страница 198: ...9 2 UPPER CABINET SECTION 198 ...
Страница 199: ...9 2 1 BACK COVER SECTION 9 2 1 1 BACK COVER 1 199 ...
Страница 200: ...9 2 1 2 BACK COVER 2 200 ...
Страница 201: ...9 3 LOWER P C B SECTION 201 ...
Страница 202: ...CROSS REFERENCE 9 1 OPERATION PANEL SECTION 9 4 MOTOR SECTION 202 ...
Страница 203: ...9 5 ACTUAL SIZE OF SCREWS AND WASHER 10 ACCESSORIES AND PACKING MATERIALS 203 ...
Страница 204: ...11 REPLACEMENT PARTS LIST 204 ...