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Содержание Code-a-phone 700

Страница 1: ...l 1ftlp a FORD V 7 STR ES V 5001 S E JOHNSON CREEK BLVD PORTLAND OREGON 97206 503 774 1104 TCI Library www telephonecollectors info ...

Страница 2: ...matic Answer and Record 5 Message Playback 6 Message Erase 7 Rewind and Fast Forward Circuit Analysis 1 Power Supply 2 Automatic Volume Control 3 Amplifier 4 Voice Control 5 0 scillator 6 Filter Trap VI PARTS Ordering Information Case Parts A Deck Parts B Deck Parts Amplifier Parts Voice Control Parts Delay Board Parts Chassis Parts VII ACCESSORIES Tape Cartridge Earphone and Footswitch Backspace ...

Страница 3: ...ntral Office provides a calling party control disconnect signal If desired incoming calls may be monitored through the internal speaker Announcements are recorded onto the Model 700 through the attached telephone type handset Recorded messages may be played back through the handset internal speaker or optional Earphone An accessory Footswitch and Back space Unit provide for convenient transcriptio...

Страница 4: ...E 4 IMPEDANCE 33 000 0 ft 20 cps 600 r 300 3000 cps RING UP REQUIREMENTS Minimum 50 volts RMS 20 cps only CALLING PARTY CONTROL D C REQUIREMENT Minimum 20 milliamperes D C through telephone line at all times during the automatic answering cycle ANNOUNCEMENT LEVEL 3 DBM Q 55 volts average INCOMING MESSAGE LEVEL 45 DBM to 10 DBM Q 0045 volts to 2 5 volts Auto matic Volume Control compresses 55 DB of...

Страница 5: ...dy to answer the telephone 2 The Model 700 will answer incoming calls play the r ecorded announcement and discon nect Model 700 AUTOMATIC ANSWER AND RECORD l Rotate Selector Switch to ANS REC Auto Ans Lamp will light 2 The Model 700 will answer incoming calls play the recorded announcement and tran sm it a beep tone The calling party may then dictate his message onto the Tape Cartridge The Model 7...

Страница 6: ... TCI Library www telephonecollectors info ...

Страница 7: ...lic ringing service for two party grounded ringing service or to a private exchange line b Connect as shown in Fig 3 B to answer a PBX or PABX trunk c Connect as shown in Fig 3 C to answer one particular line of 1Al or l A2 key telephone system Model 700 Issue 2 d The connection shown in Fig 3 D allows a subscriber with a key telephone set to select the line to be answered The Model 700 will be co...

Страница 8: ...J R T G AlkAl I RED rn MOO c roo GREEN YELLOW BLACK WHITE KEY TELEPHONE UNIT 30 01 320 CABLE TO TELEPHONE SET 0 CONNECTION IQ WESTERN ELECTRIC 564 565HK OR ITT K500 TELEPHONE SET CONNECTING BLOCK R ________ ___ R_E_D__ INSIDE OF WESTERN ELECTRIC 564 565HK OR ITT K500 TELEPHONE SET T W l TO MODEL 700 A BLACK I Al WHITE JIJ 1 f 1 Z fl 1 1 q i H I CONNECT KEY TELEPHONE SET 30 01 320 CABLE f J hoQ J T...

Страница 9: ...connect Model 700 from A C power b Remove machine Cover and Amplifier page 12 c Momentarily lift Timer Arm fig 8 away from the A Deck An internal spring will cause the Timer Cap to rotate to the zero time position d Hold Timer Cap and carefully lift Adjust ing Tab Rotate Adjusting Tab until the desired maximum announcement length in seconds shows in the small Window fig 8 Adjustment forthe maximum...

Страница 10: ... record a te st announce me nt Ve rify that the Pilot Lamp and In Use Lamp work prope rly fig 1 2 CH ECK the announce me nt through the Hand set and through the Spe ake r 3 Rotate the Selector Switch to ANS ONLY Ve rify that the Auto Ans Lamp is working 4 Call the Model 700 from anothe r te lephone Liste n to the test announce me nt 5 Rotate the Selector Switch to ANS REC 6 Call the Model 700 from...

Страница 11: ...A C Power Cable and Tape Cartridge may all be easily substituted with known good components If this method fails study the CIRCUIT DE SCRIPTION starting on page 24 Compare the actions of the malfunctioning machine with the correct operating sequences This pro cedure should soon reveal the faulty component or adjustment Troubles in the electronic circuits can be located by employing normal trouble ...

Страница 12: ...ase hold down clip and unplug de sired relay 3 AMPLIFIER fig 10 AND VOICE CONTROL 12 a Remove Cove r above b Loosen screws and rotate 2 Circuit Board Retainers 1 4 turn fig 12 c Unplug Amplifie r or Voice Control 4 A DECK fig 10 a Disconnect Model 700 from A C power b Re move Cover above c Remove 3 A Deck Screws marked L2 from bottom of machine fig 2 d Carefully unplug and lift out A Deck 5 B DECK...

Страница 13: ...R TRANSISTOR Ql fig 12 a Remove A Deck page 12 b Remove B Deck page 12 c Remove Amplifier and Voice Control page 12 d Remove one small 4 40 x 1 4 screw and carefully swing Relay Plate out of the way as s hown in fi g 12 e Re move 2 scre ws and unplug Audio Power Transistor Q 1 f When replacing make sure that mica insulator is between transistor and chassis Model 700 CIRCUIT BOA RO RETAINER AMPLIF ...

Страница 14: ...n one screw and remove Terminal Cover Plate fig 11 d Remove 5 screws and Rear Casting fig 11 The Model 700 s hould appear as shown in fig 13 e Remove 2 screws and unplug Powe r Sup ply Transistor Q2 f When replacing make s ur e that mica in s ulator is between transistor and chassis 8 IN USE AND AUTO ANS LAMPS fig 11 a Remove Cove r page 12 b Pull out clip on desired socket and r e move lamp 9 P I...

Страница 15: ... rminal Cove r Plate fig 11 f Unsolder two speaker le ads at Speaker fig 11 Model 700 Issue 2 g Re move one screw and Rewind Forward Switch knob fig l h Loosen set screws and remove Sele ctor Switch knob and Spe aker Control knob fig l i Re move 4 screws and Front Casting fig 11 j Release Tran sform e r Cable Clamp fig 15 by pre ssing hard from the bottom k Remove 5 scre ws from bottom that secure...

Страница 16: ...e clock spring inside spool 7 Re move Mylar washer 8 Remove Supply Spool with recording tape b Replacement 1 Wind 35 feet or 64 turns of 3M Brand No 591 recording tape onto Supply Spool Connect e nd of tape to spool in the manner shown in fig 17 but wind the tape counterclockwise with the oxide dull side facing outwards A Recording Tape Assembly consist ing of a Supply Spool wound with the proper ...

Страница 17: ...severe case will introduce slippage in the drive train causing an objectionable wow in the recorded messages Clean the drive s urfaces as follows 1 Re move A Deck page 12 2 Re move 3 screws and A Deck Cove r 3 Re move 4 nuts and Motor fig 18 Model 700 4 Remove both drive belts 5 With cloth moistened in alcohol clean flywheel motor pulley both drive belts and Rewind Pulley fig 18 6 Replace both dri...

Страница 18: ...ase will introduce slippage in the drive train causing sluggish rewind and fast forward action or wow in the recorded mes sages Clean the drive surfaces as follows 1 Remove the B Deck page 12 2 With cloth moistened in alcohol clean the Drive Belts Flywheel Motor Pul ley Rewind Roller Fast Forward Rol ler Supply Drum and Take Up Drum figs 19 and 21 2 ADJUSTMENTS 18 a Record Head azimuth and Pressur...

Страница 19: ...HEAQ DRIVE ROLLER RECORD HEAD CAPSTAN TAKE UP SPOOL FIGURE 19 B DECK TOP VIEW TRIM PLATES REMOVED FOR WARD DIAL ASSEMBLY Model 700 3 MINUTE SWITCH REWIND SOLENOID BRAKE SOLENOID FIGURE 20 B DECK BOTTOM VIEW Section IV Maintenance MOTOR PULLEY 19 TCI Library www telephonecollectors info ...

Страница 20: ...ews and both Trim P late s fig 10 d Slip Tape Positione r fig 19 off its s haft Re move 4 Phillips head scre ws and Lower Trim Plate Replace Tape Positione r e Remove Phillips head screw and Cartridge Drive Hub fig 19 f Re move Phillips head screw and Take Up Spool Hold Rewind Limit Switch Actuator fig 19 out while removing spool g Re move the 6 largest 6 32 x 1 4 screws and one hexagonal post fro...

Страница 21: ...cting the measurements 6 Connect Model 700 to 117 volt A C outlet Model 700 Issue 3 2 AMPLIFIER GAIN a Temporarily remove the Amplifier Con nect Signal Generator output across the front two terminals on the Handset Termi nal Board fig 11 Be sure that Signal Generator ground connects to the front terminal marked C common on the outside of Bottom Pan Replace Amplifier b Connect AC VTVM to Signal Gen...

Страница 22: ...omentarily short together Telephone Line Terminals l and 2 to start the Model 700 automatic answer cycle Remove the short as soon as the machine starts e When the talk down tone comes on 4 sec onds after the B Deck starts adjust the FILTER ADJUST COIL and FILTER ADJUST POTENTIOMETER together for a minimum reading on the AC VTVM See fig 22 Be sure to use a non ferrous tuning stick to adjust the FIL...

Страница 23: ...r any repair work is done on a Model 700 1 Connect Model 700 to a telephone line page 6 and to a 117 volt A C power source 2 Rotate Selector Switch fig 1 to PLAY The Pilot Lamp should light 3 Push Rewind Forward Switch to the left to rewind the tape to the beginning 4 Look at the Tape Dial fig 1 If the O is not centered behind the red line remove the Tape Cartridge and rotate the Cartridge Drive H...

Страница 24: ...set is adjusted by the AVC amplified by transis tors Q401 Q402 Q403 and QI and is recorded onto the tape by record head H202 See page 30 for circuit analysis of AVC and Amplifier The previous message is erased progressively as the tape passes over erase head H201 Handset switch released a Removes de voltage from erase head H201 b Releases timer solenoid L201 to lock timer cap to timer gear Thus th...

Страница 25: ...scription Relay AD released a Extinguishes in use lamp E2 b Removes de power from Amplifier c Releases relay DLY which disconnects record head H202 from Amplifier input d Releases forward solenoid L202 stop ping the tape e Operates rewind solenoid L203 which rewinds the tape When the tape has been completely rewound a lobe on the timer gear operates rewind limit switch S202 fig 18 Switch S202 oper...

Страница 26: ...ead H202 from Amplifier input b Dis connects Amplifier output from transformer T 1 and telephone line c Releases relay LS Relay LS released a Disconnects transformer T 1 and relay CPC from terminals T and R to release the telephone line b Removes short from terminals A and Al c Connects relay RU to telephone line to prepare for the next answering cycle d Lights auto ans lamp E3 The tape continues ...

Страница 27: ...di rected through the Filter Trap and AVC amplified by transistors Q401 Q402 Q403 and Ql and recorded onto the B Deck tape by record head H302 Sec page 30 for circuit analysis of AVC and Amplifier Previous messages are erased progressively as the tape passes over erase head H301 While the message is being recorded a portion of the speech signal is sent to the input of the Voice Control J5 L The Vo...

Страница 28: ...TI The message playback function is initiated by depressing and holding the handset switch or by pulling out on the Speaker Control which operates speaker switch S3 Switch S3 or handset switch operated a Operates brake solenoid L304 to re lease brake permitting take up and suply drums to rotate fig 20 b Operates drive solenoid L301 to pull pressure roller into contact with tape and capstan fig 19 ...

Страница 29: ...ape if message playback was in process b Operates brake solenoid L304 to re lease the brake allowing the take up and supply drums to rotate fig 20 c Operates fast forward solenoid L302 which jams the fast forward roller be tween the flywheel and take up drum fig 21 causing the tape to travel fast forward The tape continues to travel forward until fast forward switch S4 is released Switch S4 releas...

Страница 30: ...e stability Resistor R419 is the collector load for this preamplifier stage which is directly coupled to 2nd preamplifier Q402 Resistor R4I 9 and transistor Q40I bias the base of this transistor Emitter resistor R42I aids in temperature stability and bypass capacitor C4IS limits the low frequency re sponse to approximately 300 cps The col lector load is provided by resistor R425 Re sistor R4I8 pro...

Страница 31: ...02 and associated circuitry Model 700 Issue 2 Section V Circuit Description The Oscillator generates the low level talk down tone upon command by the Voice Control It also generates the high level transfer and disconnect beep tones OSCILLATOR FREQUENCY coil L401 pro vides a positive feedback path from the emit ter follower output to the base of transistor Q404 through resistor R403 causing the tra...

Страница 32: ...Item Description No Part No Qty 6 32 x 1 4 Screw 23 F31 115 8 6 Lock Washer Cover Handset Hanger 24 F07 514 4 Cover Door Includes Item 6 25 P00 138 1 Instruction Sheet 26 M00 583 1 6 20 x 3 8 Thread 27 P00 122 1 Cutting Screw Rear Casting 28 F 15 126 1 Retaining Ring 29 F02 025 1 6 32 x 16 Cap tive Screw 30 H03 006 1 Terminal Cover Plate 31 H03 005 1 6 32 x 1 4 Flat 32 P00 209 1 Head Screw 33 P00 ...

Страница 33: ...9 15 73 G c ll m t VI m m x r 0 0 m 0 m E Model 700 Issue 5 I I Section VI Parts 33 TCI Library www telephonecollectors info ...

Страница 34: ...Guide 4 40 x 1 4 Screw Cable Clamp Lever Tension Spring 6 32 x 1 4 Screw Deck Plate 4 40 x 5 16 Screw Retaining Ring 74 75 76 77 78 79 80 82 83 84 85 86 87 88 C201 CR201 CR202 CR203 H201 H202 L201 L202 L203 M201 P201 R201 S201 S202 Part No S00 039 Fl6 386 F03 375 30 00 244 30 00 379 30 00 043 F03 031 M00 019 A00 103 30 00 044 30 00 240 H00 020 F 15 210 S00 008 H05 022 F05 615 30 00 054 J00 018 J00...

Страница 35: ...Model 700 Issue 2 Section VI Parts FIGURE 25 A DECK EXPLODED VIEW 35 TCI Library www telephonecollectors info ...

Страница 36: ...nger Return Spring Pressure Pad Retaining Ring Tape Positione r Spring Drive Lever 4 40 x 3 16 Screw 5 32 x 5 16 x 010 Mylar Washer 4 Split Lock Washer Rewind Limit Switch Actuator 54 55 56 57 58 59 60 61 Part No Qty F 15 390 15 F03 361 34 F07 701 4 Fl5 384 8 F06 105 2 F04 016 3 P00 097 1 P00 098 1 F07 501 2 H02 038 4 F03 331 7 A00 111 1 P00 128 2 F04 013 3 F30 145 3 P00 035 1 J00 021 4 F30 210 6 ...

Страница 37: ...9 15 73 FIGURE 26 B DECK e 31 700 E X P L O Di EE D VIEW U p p ER PLA TE Section VI Parts 37 TCI Library www telephonecollectors info ...

Страница 38: ...Spring Dial Shaft 1 8 x 5 16 x 080 Fibre Washer 1 4 x 1 2 x 080 Fibre Washer Gear Plate Item No 92 93 94 95 96 97 98 C301 CR301 CR302 CR304 H301 H302 L301 L302 L303 L304 M301 P301 R301 S301 S302 S303 S304 Z301 Part No P00 023 30 00 036 F30 050 F31 057 F04 004 F 15 190 P00 099 C05 012 T02 002 T02 002 T02 002 30 00 009 30 00 292 30 00 292 30 00 294 30 00 292 LOl 026 HOl 017 Rll 023 30 00 039 H00 055...

Страница 39: ...9 15 73 67 FIGURE 27 B DECK Model 700 Issue 3 5301 5302 EX PLOD ED I I I VIEW LOWER Section VI Parts I 0 2 I I I I I I I I I I I I I I I 74 49 PLATE 39 TCI Library www telephonecollectors info ...

Страница 40: ... 2 Watt Resistor Instruments serial numbers 2858 and below Circuit No Part No R404 R405 R406 R407 R408 R409 R410 R411 R412 R413 R414 R415 R416 R417 R418 R419 R420 R421 R422 R423 R424 R425 R426 R427 R428 R429 R430 R431 R432 T401 Rl 2 027 Rll 020 Rl0 034 Rl 2 028 Rl 1 026 Rll 020 Rl0 035 Rl 1 037 Rl2 029 Rl2 026 Rl2 029 Rl0 026 R12 034 Rl2 042 Rl 2 036 Rl 1 027 Rll 021 R12 034 Rl 2 035 Rl 1 035 Rll ...

Страница 41: ...Model 700 Issue 2 P401 FIGURE 28 0402 0403 CR405 C401 Section VI Parts 0404 41 TCI Library www telephonecollectors info ...

Страница 42: ...Circuit No Q505 R501 R502 R503 R504 R505 R506 R507 R508 R509 R510 R511 R512 R513 R514 R515 R516 tR517 R518 ttR519 Part No TOl 014 P00 070 Rl0 027 R00 014 RI 2 030 RI2 026 RII 027 RI2 030 R00 051 Rl0 019 R12 028 Rll 029 Rl0 025 RI2 026 RI 2 028 RI I 029 R00 012 R00 012 Rl2 046 RI 2 028 Rl0 019 Description S 3489 Silicon NPN Transistor 9 15 73 Transistor Pad 5 Required 470 fl 5 1 2 Watt Resistor 1 K...

Страница 43: ...9 15 73 Q505 CR504 CR506 CR502 Model 700 Issue 4 CR505 Q504 CR501 Q503 Q501 CR507 CR508 Q502 FIGURE 29 VOICE CONTROL COMPONENT SIDE Section VI Parts TCI Library www telephonecollectors info ...

Страница 44: ...l Rl0 025 1 µf 200 V Mylar Capacitor 400 µf 40 v Electrolytic Rl3 Rl0 027 Capacitor 100 µf 40 v Capacitor Electrolytic Rl4 Rl0 025 Rl7 Rl0 025 TI 58 Silicon Diode IN 4004 Silicon Diode TI 58 Silicon Diode NOS 022 IN 4004 Silicon Diode Instruments serial numbers 3218 and below C9 is COJ 044 400 µf 40 V Electrolytic Capacitor 9 15 73 Description TI 58 Silicon Diode TI 58 Silicon Diode 2 2K 0 5 1 2 W...

Страница 45: ...LACK ORANGE WHITE YELLOW BLACK WHITE ORANGE YELLOW WHITE ORANGE BLUE WHITE ORANGE ORANGE WHITE RED BROWN WHITE GREEN BLACK WHITE BROWN SLATE BLACK WHITE SLATE BLACK 2 WHITE SLATE BLUE WHITE SLATE YELLOW WHITE BLACK SLATE WHITE SLATE SLATE FIGURE 30 DELAY BOARD COMPONENT SIDE Section VI Parts 45 TCI Library www telephonecollectors info ...

Страница 46: ...fl Relay 4 P D T 700 fl Relay 4 P D T 700 fl Relay 4 Pole Relay Socket 6 Required 4 Pole Relay Hold Down Clip 6 Required R2 R6 R7 R8 RIO RIS Rl6 Rl8 R22 R20 010 R20 009 Rl 1 027 Rl0 034 Rl0 019 SI H00 201 S2 S4 HOO OS9 S3 30 00 097 SS 30 00 096 P00 12S T 1 L00 027 T2 L00 028 T3 L00 029 TBl H04 026 TB2 H04 028 N05 157 Zl EOl 002 Z2 EOl 002 Z3 EOl 004 9 15 73 Description 2 Pole Relay Hold Down Clip ...

Страница 47: ...the Forward Limit Switch fig 20 cannot stop the B Deck before the recording tape is torn out of the Tape Cartridge 1 TO SPLICE A BREAK IN RECORDING TAPE a Lay the broken ends of the RecordingTape on a flat surface as shown in fig 31 A Lay the oxide dull side down b Cut through both pieces of Recording Tape with razor blade or scissors See fig 31 B c Place a short length of 1 4 wide Splicing Tape o...

Страница 48: ...TSWITCH 1 OPERATING INSTRUCTIONS a Plug Earphone and Footswitch into jacks on side of Model 700 b Push Speaker Control in See fig 1 c Rotate Selector Switch to PLAY d Depress Footswitch until heavy spring tension is felt first click The B Deck Tape Cartridge will play through the Earphone Rotate Speaker Control to de sired volume e Depress Footswitch all the way down second click The B Deck will r...

Страница 49: ...evie wed each time the Foot switch is depressed f Rotate the Backspace Control fig 33 to adjust the amount of backspace Model 700 Issue 2 g Depress Footswitch all the way down to second click The B Deck will re wind until the Footswitch is rele ased 2 CIRCUIT DESCRIPTION See fig 34 Depressing the Foot switch to the point of heavy spring resistance causes the fwd cont acts to close Fwd contact s cl...

Страница 50: ...nd Depressing the Footswitch all the way down causes the Rew contacts to close The fwd contacts remain closed Rew contacts closed a Operates relay FD which releases drive solenoid L301 and brake solenoid L304 stopping the tape b Operates B Deck rewind solenoid L303 and brake solenoid L304 causing the tape to rewind back into the Tape Cartridge 3 PARTS Circuit No Part No Description X00 101 Backspa...

Страница 51: ...RELAY FUNCTIONAL DESIGNATIONS AD A DECK ADR A DECK REWIND BD e DECK CPC CALLING PARTY CONTROL DLY DELAY ENA ENABLE FD FORWARD DELAY LS LINE SIEZURE RU RING UP vc VOICE CONTROL J iclO SWITCH SCHEMATIC SYMBOL SWITCH SH YNN IN POSITION _i _ 1 o 1 ALL SI BR REAR OF 8IH BR SELECTOR SWITCH ANN CHECK jD ANS ONLY ANN REC g ___G ANS REC ERASE OFF Model 700 Issue5 c PLAY SELECTOR SWITCH SI POSITIONS WAFER J...

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