1. Circuit Operation
The reception signal output from the line transformer T101 is input
to pin (2) of IC101 via C136, R111, C111 and R158 and then the
signal is amplified at pin (1) of IC101 and sent to the reception
system at 11.6dB.
The transmission signal goes through C571 and R579 and enters
IC511-pin (2), where the signal is amplified to about 7.4dB. Then, it
is output from pin (1) of IC101 and transmitted to T101 via C117
and R110. If the side tone circuit is not applied, the transmission
signal will return to the reception amplifier via C136, R111, C111
and R158. When the side tone circuit is active, the signal output
from IC101 pin (1) passes through C117, R113, C113, C112 and
R112 and goes into the amplifier IC101 pin (3). This circuit is used
to cancel the transmission return signal.
6.9. ITS (Integrated Telephone System) AND MONITOR SECTION
6.9.1. GENERAL
During the monitor operation, the speaker output passes through the power amplifier (IC102)
[Analog board]. / The DTMF signal is output from the modem (IC505: digital board). The alarm
tone, the key tone, bell tone, and beep are output from gate array IC501 (digital board). During a
pulse dial operation, the monitor tone is output from gate array IC501.
6.9.2. TELEPHONE MONITOR
1. Function
This is the function when you are not holding the handset and can
hear the caller’s voice from the line.
2. Signal path
Refer to
2.3.7.1. CHECK SHEET
().
6.9.3. HANDSET CIRCUIT
1. Function
189
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 ...