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KT1 & KT4

Series

Telephones

LD and MF Versions

Servicing

Handbook

KT1 Series

TMC

Limited

KT4 Series

Содержание KT1 Series

Страница 1: ...KT1 KT4 Series Telephones LD and MF Versions Servicing Handbook KT1 Series TMC Limited KT4 Series...

Страница 2: ...y of the company is one of continuous development and improvement and the management reserves the right to alter designs and specifications without notice Copyright 1984 TMC Limited Malmesbury Wiltshi...

Страница 3: ...re Parts Circuit Identification KT1 Series Telephones Parts Lists KT4 Series Telephones Parts Lists TABLES FIGURES KT1 KT4 Series Telephones Principle of Operation Basic LD Version Circuit Diagram 150...

Страница 4: ...0V to 65V d c 60V nominal a Suitable for use on lines of loop resistance in the range 0 to 1 25kohms one leg at battery voltage the other at OV with exchange voltages of 48V and 60V nominal b With exc...

Страница 5: ...etween frequencies in the region of 1 1 kHz and 1 25 kHz At the loudest volume control setting the output is at least 80 dBA at one metre The caller is muted during dialling and a caller mute wire is...

Страница 6: ...signed to meet the requirements of a new generation of telephone sets in line with the latest developments in telecommunications technology MECHANICAL CONSTRUCTION 4 The TMC KT1 Series telephone compr...

Страница 7: ...peedy smooth action The rubber mat conductive contacts directly operate the touch responsive switches on the PCB The setting of these switches is monitored by the main control IC TABLE 1 IC1 IC2 TMC 1...

Страница 8: ...option additional components D19 S13 PLE PLF SKE and SKF are fitted This circuit prevents outgoing calls being made 23 In the circuits associated with IC1 R8 C12 C14 to C17 02 and D16 are not require...

Страница 9: ...d 35 The A and B wires nominally 24V 48V or 60V d c lines are routed via the polarity bridge 09 D10 D12 and D13 The polarity bridge including surge suppressor 011 a 130 V Zener diode also provides tra...

Страница 10: ...mber During impulses the base of TR1 is pulled down thus switching off TR1 and TR2 since the latter s base current is also removed For the duration of the impulse the circuit relies on the charge stor...

Страница 11: ...tched off during timed break recall if this option is installed Capacitor C2 maintains the positive supply rail for IC1 under such circumstances If TR2 is fitted R9 is required to 3513 300 05070 9 pro...

Страница 12: ...KBX100 system fit SKC to pins 2 and 3 of PLC 10 79 In the circuits associated with IC1 D3 and D5 are not required for initial units but the positions are provided for possible future developments 80 M...

Страница 13: ...entred on TR7 or its functional equivalent formed by TR2 TR4 and R10 The supply is limited to 22V by Zener diode D14 As the supply is established C15 begins to charge via R24 until the voltage across...

Страница 14: ...sient spikes and is used as an anti tinkle device to prevent other telephones ringing during dialling operations 111 The tone caller capsule XL3 may be fitted to the base of the instrument and connect...

Страница 15: ...splacement gain which is controlled by the AGC system This circuit takes a voltage from the d c control block which is similar to that found on the base of TR1 and compares it with a voltage refer enc...

Страница 16: ...eg to pin 5 3 For parallel operation of telephones fitted with Western Electric type plugs para graph 130 3 above applies 132 After installing the telephone sets carefully remove the transparent cover...

Страница 17: ...es as illustrated in Figures 13 and 14 139 Parts may be ordered directly from TMC Limited Marketing Dept Swindon Road Malmesbury Wiltshire England SN16 9NA Telephone Malmesbury 06662 2861 Telex 44208...

Страница 18: ...Plate Black Base Plate Black KT1 SERIES TELEPHONES PARTS LISTS No 8 Woodscrew 3 required Base Screw from Base instrument Wall Plug 3 required Upper Moulded Plastic Case 11 hole Upper Moulded Plastic...

Страница 19: ...60 5 3513 401 31290 6 3513 401 15570 7 3513 304 01950 8 3513 401 35730 9 3513 401 35400 3513 300 05070 KT4 SERIES TELEPHONES PARTS LISTS Description of Part Upper Moulded Plastic Case 11 hole Upper Mo...

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Страница 21: ...cuit Out of Circuit Other Links Link A Link B Link C Link L Link M 3513 300 05070 Fit SKB to PLB pins 1 2 Fit SKB to PLB pins 3 4 Fit Link D omit Links E F Fit Link E omit Links D F Fit Link F omit Li...

Страница 22: ...16 Lm L 8 L 9 l IOl l 1 F 2 3 4 n t b 1__ 2 10 ___ t R10 1 ji 16 1 11231 33k 016 T C14 I 1231 Tm c1s 311 tkE f l iL LkO iiLkF 17 01S 9 1V PLE PLF SKE 0 S 13 SKF 1221 PL02 B L inecord Connec to 2 rx 30...

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Страница 24: ...ion Other Links Link A Link B Links K and L Link M 3513 300 05070 Fit SKB to PLB pins 1 2 Fit SKB to PLB pins 2 3 Fit Link C omit Links D E Fit Link D omit Links C E Fit Link E omit Links C D Fit Link...

Страница 25: ...N TMC 1302 REF OR osc TMC 1604 43 MIC RATIO 6 EAR A B 0 eJ3 01 VDOVSS 1 2 3 4 15 16 M2 10 11 12 13 c14 T T 43 LkC LkO s v hs1i LkF LkH 1 0 S11 LkG LkJ Numbers in brae kJts l refer to explanatory parag...

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Страница 27: ...d F Link G and J Link L Link P Link R 3513 300 05070 Fit SKB to PLB pins 1 2 Fit SKB to PLB pins 2 3 Omit Link E Fit Link E Fit TR2 R9 and Link H omit Links K M and N Fit Links K M and N omit TR2 R9 a...

Страница 28: ...1 o rin 1 1J I Vss A B C 0 F G Vdd 100 R 10 J 10 1 2 3 4 15 16 12 33k 2 62 016 6 S1 S2 S3 S4 SS S6 S7 SB S9 S SO S t I LkE LkF l r11 l r21 l 3 Ir1 11rs1 I r6J 1rn 1ra1 l r91 I l 101 l Lk D 681 LkH i 1...

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Страница 30: ...2 Fit SKC to PLC pins 2 3 Omit Link F Fit Link F IC1 must be TMC 1617 TR2 fitted Fit Link H omit Links C E and J IC1 must be TMC 1317 TR 2 not fitted Fit Links C E and J omit Link H IC1 must be TMC 16...

Страница 31: ...I I L OJ I R9 1M 13 SU IC 1 a 1 TMC 1317 OR TMC 1617 77 A B c D 1 12 3 14 tt LEVEL 6 SELECT F G VDD fj 16 n2 tkG CJ __ LkF 86 Linecord t1S14 a 2 Connecto 08 PLG2 _ B 2 Y 10 lc9 Im SKE l iJ1 8 r22n Q...

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Страница 33: ...05070 Fit SKB to PLB pins 1 2 Fit SKB to PLB pins 2 3 Omit Link E Fit Link E Fit SKG to PLG pins 2 3 Fit SKJ to PLJ pins 1 2 Fit SKK to PLK pins 2 3 Omit Links J K R24 value 82K R24 value 330K Fit Li...

Страница 34: ...PU I 2ITK IR12 S1K SKJ 96 R1S l 22K g a R16 l 7 47K k ____ See Fig 8l 9S y R24 Linec ord _ _ R23 C16 Comeeto 2 2K Ll J 33n 6 N C 014 22V SKCi C9 TR6 M 30n 100K il U 01s TIR17 TR7 C1 S PLG 96 9 130V V...

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Страница 36: ...1 2 Fit SKD to PLO pins 2 3 Fit SKE to PLE pins 1 2 IC1 TMC1317 or TMC1617 See Table below Other Links Link A Link B Link E Link G Link N Link P Link Q Link R Link S STRAP No TMC1317 Not fitted Fitte...

Страница 37: ...10n 20k r_A_ __ 1 1 1 11rn TRS R17 22k R19 10k p LkS Ll1 lkH kj __ TR6 R21 2 2k C15 680n R22 See Fig BJ JC 1a 1 TMC 1317 or TM C 1617 1 13 Lkl I SKE G J 2 is 1 4 PL J Line cord Connector 1114 l 1 CL...

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Страница 39: ...00 400 I v v v 300 280 1 200 I125 100 70 I V I I I I I I 1 I I I I I I I I I I I I I 82K 1OOK 150K 200K 300K 330K 400K Figure 6 R24 Value 500K 600K 700K Figure 7 R22 Value FIGURE 8 Timed Break Period...

Страница 40: ...2 3 s SECONDARY LINE JACK UNIT FIGURE 9a Typical British Telecom Plug 431 A Installation Telephone Line Cord Green Securi ng hole Blue Red I While FIGURE 9b Block Terminal 52A Connections Securing hol...

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Страница 42: ...E 2 BOTTOM CASE 3 PCB ASS Y 4 KEYPAD MAT 5 BUT TON GUIDE 6 BUTTONS 0 9 7 LINE CORD 8 WINDOW EXCH C A RD HOLDER 9 SCREW 10 FOOT 4 OFF 11 TONE CALLER FIGURE 11 KT1 Series Base Instrument Parts Details 3...

Страница 43: ...5070 6 8 2 1 BODY UPPER 2 BO DY LOWER 3 RECEIVER 4 TRANSMITTER 5 RECEIVER CLIP 6 TRANSMI TTER CLIP 7 SPA CER 8 LOCATING RING 9 HANDSET CORD 10 SCREW 11 SELF ADHESIVE FOA M FIGURE 12 KT1 Series Handset...

Страница 44: ...CASE 2 BOTTOM CASE 3 P CB ASSY 4 KEYPAD MAT 5 BUTTON GUIDE 6 BUTTONS 0 9 7 LINE C ORD 8 WINDOW EXCH CARD HOLD ER 9 SC REW 10 FOOT 4 OFF 11 TONE CALLER FIGURE 13 KT4 Series Base Instrument Parts Detail...

Страница 45: ...2 3513 300 05070 JJi_ 1 BODY UPPER 2 BODY LOWER 3 RECEIVER 4 TRANSMITIER 5 RECEIVER COVER 6 FRAME 7 HANDSET CORD 8 WEIGHT 9 PACKING FOAM FIGURE 14 KT4 Series Handset Parts Details 37...

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Страница 48: ...sbury Wiltshire England SN 1 6 9NA Telephone Malmesbury 06662 2861 Telex 44208 TMCMAL G Due to a continuing programme of development TMC Limited reserves the right to modify equipments described and i...

Страница 49: ...Q O 0 x Name Subscription for updating TO TMC LIMITED DOCUMENTATION DEPARTMENT MARKETING SWINDON ROAD MALMESBURY WILTSHIRE ENGLAND SN16 9NA Please register me for future updating of my KT1 KT4 SERVIC...

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