Composition:
Time Switch IC (IC3)
Circuit Operation:
TSW (Time division Switch) Circuit exchanges totally 256 call channels, which is organized into
the PCM highways of 8 lines, and one of the lines is composed of 32 channels. This circuit is
integrated into one chip of LSI (IC3), and is controlled by the CPU (IC1) to present the data on the
up highways of HWR0 through 7 to the down highways of HWS0 through 7.The uses of each
highways are shown below.
HW 0
Conference Circuit, Tone-DTMF Generator, External paging, Music
ON HOLD, Door-phone.
HW 1
CO #1~#8
HW 2
EXT #1~#8
HW 3
EXT #9~#16
HW 4
EXT #17~#24
HW 5
EXT #25~#32
HW 6
CO #9~ #12, DISA
Conference Circuit
Composition:
Gate Array (IC2)
3 persons×6 conferences controller
1M byte EPROM (Summation Table, Wave Data) (IC19)
Circuit Operation:
Conference Circuit is for enabling the three party conference. This circuit is connected with
HWS0 of the down highway and HWR0 of the up highway. After the voice data which are
transferred to HWS0 at TSW are processed with the summation in this circuit, and are presented
to HWR0 and transferred at TSW (IC13) again. This circuit consists of the Gate Array (IC2) and
ROM (IC19). Gate Array (IC2) picks up the voice data, multiplies, makes ROM address, and sends
to ROM. Conference operation is added by ROM table. The summation table of the PCM data is
stored in ROM. ROM output is sent to Gate Array. Gate Array sets the data on the highway. This
circuit covers 3-person×6-conference. This circuit function to reduce 6 dB of 2-persons' level out
of 3-person to realize the conference call of 2-CO-person and 1-EXT-person.
Tone Generator Circuit
Composition:
33
Содержание KX-TA1232
Страница 8: ...4 CONNECTION 8 ...
Страница 9: ...9 ...
Страница 16: ...16 ...
Страница 19: ... 2 SYSTEM DIAGRAM OF PCM CLOCK 19 ...
Страница 20: ... 3 SYSTEM DIAGRAM OF ANALOG LINE 20 ...
Страница 21: ... 4 SYSTEM DIAGRAM OF POWER SUPPLY 21 ...
Страница 49: ...49 ...
Страница 52: ...52 ...
Страница 53: ...9 2 NO DIAL TONE CHECK EXTENSION BOARD 53 ...
Страница 54: ...54 ...
Страница 55: ...9 3 CANNOT DIAL CHECK EXTENSION BOARD 55 ...
Страница 56: ...9 4 CANNOT ACCESS AN EXTENSION CHECK EXTENSION BOARD POWER SUPPLY UNIT AND CPU BOARD 56 ...
Страница 57: ...9 5 CANNOT SEND A HOLD TONE CHECK CPU BOARD 9 5 1 HOLD TONE TO COL 57 ...
Страница 58: ...9 5 2 BGM BACK GROUND MUSIC 9 6 TOO MUCH NOISE LEVEL WITH INTERCOM HUM CHECK POWER EXTENSION AND CO BOARD 58 ...
Страница 59: ...9 7 CO LINE S RELEASED DURING A CALL CHECK CO BOARD 9 8 CAN NOT RECEIVE COL DIAL TONE CHECK CO BOARD 59 ...
Страница 60: ...9 9 CAN NOT SEND DTMF TONES CHECK CO BOARD WHEN PULSE TONE CONVERSION SPEED DIAL ONE TOUCH DIAL REDIAL 60 ...
Страница 61: ...9 10 EXTENSION IS NOT RINGING WHILE BEING CALLED FROM A CO LINE CHECK CO BOARD 61 ...
Страница 62: ...10 DIAGNOSTIC METHOD 10 1 HOW TO GET INTO SELF DIAGNOSTIC MODE 62 ...
Страница 63: ...10 2 TEST ITEMS 63 ...
Страница 67: ...67 ...
Страница 68: ...68 ...
Страница 69: ...69 ...
Страница 70: ...70 ...
Страница 71: ...13 EXTENSION CABLE FOR SERVICING KX TA1232 71 ...
Страница 72: ...72 ...
Страница 73: ...14 CABINET AND ELECTRICAL PARTS LOCATION KX TA1232 73 ...
Страница 74: ...74 ...
Страница 75: ...75 ...
Страница 76: ...14 1 ACTUAL SIZE OF SCREWS AND WASHER 76 ...
Страница 77: ...77 ...
Страница 78: ...15 ACCESSORIES AND PACKING MATERIALS KX TA1232 78 ...
Страница 79: ...16 REPLACEMENT PARTS LIST KX TA1232 Note 79 ...
Страница 130: ...18 CABINET AND ELECTRICAL PARTS LOCATION KX TA123260 130 ...
Страница 131: ...19 ACCESSORIES AND PACKING MATERIALS KX TA123260 131 ...
Страница 138: ...21 2 HOW TO REMOVE THE LOWER CABINET Procedure 21 1 21 2 1 Remove the five Screws B 2 Remove the Lower Cabinet 138 ...
Страница 139: ...21 3 HOW TO REMOVE THE MAIN BOARD Procedure 21 1 21 2 21 3 1 Remove the Screws C 2 Remove the Main Board 139 ...
Страница 140: ...21 4 HOW TO REMOVE THE SUB BOARD Procedure 21 1 21 2 21 3 21 4 1 Remove the two Screws D 2 Remove the Sub Board 140 ...
Страница 141: ...22 CABINET AND ELECTRICAL PARTS LOCATION KX TA123270 141 ...
Страница 142: ...23 ACCESSORIES AND PACKING MATERIALS KX TA123270 142 ...
Страница 164: ...25 3 HOW TO REMOVE THE MAIN BOARD Procedure 25 1 25 2 25 3 1 Remove the Main Board 164 ...
Страница 165: ...26 CABINET AND ELECTRICAL PARTS LOCATION KX TA123280 165 ...
Страница 166: ...27 ACCESSORIES AND PACKING MATERIALS KX TA123280 166 ...
Страница 245: ...14 1 6 1 R703 R702 R701 R700 C700 C701 C702 C703 PQUP10135Z CN702 CN701 25 3 LED 1 2 PQUP10135Z ...