Internatonal Taretronics 826-0018-000 Technical Manual Download

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Summary of Contents for 826-0018-000

Page 1: ...teamPoweredRadio Com TECHNICAL MANUAL PD II S ERliES CARTRIDGE RECORDER AND REPRODUCER 1nTe RnAr1onAL TAPETROn1 ICS CORPORATIOn 2425 South Main Street Bloomi ngton Illinois 61701 Telephone 309 828 1 1...

Page 2: ...MANUAL 890 0013 000 PD I I S E RI ES CARTRIDGE RECORDERAND REPRODUCER REPRODUCER RECORDER REPRODUCER 826 0018 000 829 0008 000 lnTeRnATIOnAL TAPETRon1cs CORPORATIOn 2425 South Main Street Bloomington...

Page 3: ...TMENTS PD II SERIES Page 1 1 1 1 1 1 1 2 2 1 2 1 2 1 2 2 2 3 2 3 2 4 3 1 3 1 3 1 3 2 4 1 A GENERAL MECHANICAL INFORMATION 4 1 B CAPSTAN SHAFT MOTOR POSITION 4 1 C PRESSURE ROLLER COARSE SOLENOID ADJUS...

Page 4: ...TION PRIMARY 1 kHz CUE SENSITIVITY RECORDER PROGRAM LEVEL RECORD EQUALIZATION RECORD METER CALIBRATION RECORDED CUE TONE FREQUENCY AND LEVEL PROGRAM AND CUE BIAS SECTION VIII I E fTRICAL DRAWINGS AND...

Page 5: ...ucer Top View 19 Recorder Top View 20 Recorder Rear View 21 Deck Bottom View 22 Deck Assembly Exploded View 23 Top View Reproducer Electronics 24 Recorder Front View Electronics 25 Recorder Top View E...

Page 6: ...e used The cue tone detector utilizes reliable R C networks The program amplifier has NAB equalization a nd a transformer coupled output Several other features improve the ease and reliability of oper...

Page 7: ...dB from 50 to 12 000 Hz Equalization NAB adjustable to compensate for head wear and other factors Cue Signal NAB primary cue 1 kHz standard Playback Time 2 seconds to 10 5 minutes NAB size A cartridg...

Page 8: ...nels Better than 50 dB at 1 kHz Frequency Response 2 dB from 50 to 12 000 Hz Equal ization NAB Cue Signals 1 kHz primary cue standard automatically recorded at s t art of recording Bias Oscillator Fre...

Page 9: ...www SteamPoweredRadio Com...

Page 10: ...unti l installation has been compl eted in case concealed damage is discovered If shipping damage is found contact ITC for assistance in the filing of claims B INSTALLATION PD II Reproducers and Recor...

Page 11: ...ontrol of the recorder Barrier strip location is provided in Figure 2 1 Ground switching is employed for all remote control functions Normally open momentary action switches are utilized for both the...

Page 12: ...e Start Switch shows that the machine is in a Run condition The Stop Switch can be pressed to stop the tape drive system Remember that unless a cartridge stops automatically it will not be properly cu...

Page 13: ...e ready lamp stop switch is illuminated indicating that the cartridge has been properly inserted and that the Reproducer is ready for operation START SWITCH STOP SWITCH 3 Press the start switch moment...

Page 14: ...ng action does not occur at an even rate and the tape tends to jerk as it pul ls from t he center of the hub Al so the tape is coated with a l ub r i c ant which reduces drive friction One means of im...

Page 15: ...d torque is usually gained by complicated and unreliabl e mechanical linkage assembly In the PD II the required torque is achieved by using a very simple but reliable chain and sprocket The special sh...

Page 16: ...ormally be required only if the motor has been removed a check for proper positioning of the capstan should be part of the regular maintenance schedule 1 Remove the rubber pressure roller and place th...

Page 17: ...s on the top just under the retainer clip C PRESSURE ROLLER COARSE SOLENOID ADJUSTMENT This adjustment is made at the factory and should not normally have to be readjusted unless the motor assembly or...

Page 18: ...nt but for best r esul ts a check of the pressure roller capstan pressure should be on a monthly routine maintenance schedule 1 Using the pressure roller compression qauqe available from ITC check the...

Page 19: ...rtional to the speed at which air is allowed to move through the small hole on the underside of the solenoid seat The noise of the solenoid operation shares the same relationship See Figure 4 5 for pa...

Page 20: ...and the lower t rack is the cue channel 1 Installation The ITC P D II units utilize the no mount type heads to provide quick and easy installat on a Loosen the two screws in the head mounting strap b...

Page 21: ...until the face of the head is perpendicular with the surface of the deck Rest one edqe of a metal rule or any gauge known to be square on the deck surface and move it against the face of the head Whe...

Page 22: ...should be adjusted by equal amounts in the same direction 3 Recheck the zenith perpendicularity of the head as instructed in Step C above 4 Remove the transparent tape Reproduce Head Azimuth Adjustmen...

Page 23: ...red loosen the two mounting screws 3 Keeping the tape height gauge flat on the deck posi tion the tape guide as shown in Figure 4 11 a Keep the tape guides as close to the head as possibl e without co...

Page 24: ...www SteamPoweredRadio Com PDII 080674 KM TAPE HEIGHT GAUGE 830 0003 001 FIGURE 4 11 OECK PAGE 4 9...

Page 25: ...www SteamPoweredRadio Com SECTION V MECHANICAL DRAWINGS PD II SERIE S REPRODUCER FIGURE 5 1 PDII 080674 KM PAGE 5 1 START SWITCH STOP SWITCH...

Page 26: ...www SteamPoweredRadio Com PDII 080674 KM RECORDER REPRODUCER FIGURE 5 2 PAGE 5 2 START SWITCH METER M l...

Page 27: ...oweredRadio Com REPRODUCER ELECTRONICS PROGRAM REPRODUCE E Q R446 PDII 080674 KM L3 RECORDER TOP VIEW FIGURE 5 4 REPRODUCER TOP VIEW FIGURE 5 3 REPRODUCER ELECTRONICS PROGRAM REPRODUCE E 0 R4 4 6 PAGE...

Page 28: ...www SteamPoweredRadio Com T8201 TB4O1 12 DECK BOTTOM VIEW FIGURE 5 6 E DII 080674 KM RECORDER REAR VIEW FIGURE 5 5 AIR o DAMPING ADJUST L3 o 0 o o o 0 Bl 0 0 VOLTAGE REGULATOR UI FRONT PAGE 5 4...

Page 29: ...www SteamPoweredRadio Com REPRODUCER ELECTRONICS PROGRAM REPRODUCE E Q R446 PDII 080674 KM L3 RECORDER TOP VIEW FIGURE 5 4 REPRODUCER TOP VIEW FIGURE 5 3 REPRODUCER ELECTRONICS PAGE 5 3 Tl L3...

Page 30: ...www SteamPoweredRadio Com TB201 TB401 12 DECK BOTTOM VIEW FIGURE 5 6 PDII 080674 KM RECORDER REAR VIEW FIGURE 5 5 AIR o DAMPING ADJUST LJ 0 o 0 o 0 0 Q Bl Q 0 VOLTAGE REGULATOR UI FRONT PAGE 5 4...

Page 31: ...www SteamPoweredRadio Com 0 7n vt 38 at u 33 II II l lil 14 n 1 l PDII 080674 KM 29 30 FIGURE 5 7 DECK ASSEMBLY PAGE 5 5...

Page 32: ...Spring1 cartridge hold down Guide tape L H Screw 4 40 x 3 16 Phillips panhead Screw 3 48 x 5 8 Phillips fillister Strap head mounting Head record monophonic Head reproduce monophonic Screw 6 32 x 1 4...

Page 33: ...C and supplies power for the cue detector circuit the reproducer logic and the recorder logic on recorder models Decoupling net work Rl02 and Cl02 provides low voltage DC to the pro gram reproduce amp...

Page 34: ...Pressing the start switch causes the collector voltage of 0408 to reduce and in so doing alows base emitter current flow of transistor Q409 through R432 The collector of transi tor Q409 now provides c...

Page 35: ...d this transistor supplies voltage to the bias oscillator circuit Transistor Q205 is also turned on at this time through capacitor C202 and resistor R2ll and causes the 1 kHz cue oscillator to turn on...

Page 36: ...e tone is present G PROGRAM REPRODUCE AMPLIFIER The program reproduce circuit is located on the same PC card as the cue detector and reproducer logic See Figure 8 3 The circuit consists of an equalize...

Page 37: ...rom the full wave bridge rectifier The bias oscillator circuit consists of a single transistor oscillator and two variable outputs one qoing to the program recording head and the other to the cue reco...

Page 38: ...Q303 The frequency and level of this cue tone are variable The frequency is determined by paralleled net work L302 and capacitor C309 The inductance of L302 is variable over a range of 475 to 525 rnH...

Page 39: ...fully using the tape and by keeping the tape heads and guides clean you can minimize this loss The ideal method to maintain test cartridges is to record your own test cart ridges and compare them with...

Page 40: ...www SteamPoweredRadio Com L3 FIGURE 7 2 PDII 080674 KM FIGURE 7 1 START SWITCH STOP SWITCH METER MI R EPR0OLJC R Cl ECTAONICS PROGRAM REPRODUCE E Q R446 L3 FIGURE 7 3 PAGE 7 2...

Page 41: ...E RECORDER PROGRAM LEVEL The input recording level is adjusted with Rl which is a front panel contr ol and can be adj u sted to accept an input level between 20 and O dBm See Figure 7 2 F RECORD EQUAL...

Page 42: ...R317 Figure 7 3 I PROGRAM AND CUE BIAS Variable capacitor C305 is used to adjust the program bias and variable capacitor C306 is used to adjust the cue bias Select a properly erased 3 minute cartridg...

Page 43: ...he record set button and start the machine With the above mentioned clip lead in place a continuous 1 kHz tone will be recorded Adjust C306 for an exact peak of playback output level see Figure 7 3 fo...

Page 44: ...0 Capacitor 22 mfd 50 v electrolytic Cl02 687 0006 000 Capacitor 220 mfd 25 v electrolytic DIODES CRl0l 575 0007 000 Diode 1N4005 CR102 575 0007 000 Diode 1N4005 CR103 575 0007 000 Diode 1N4005 CONNEC...

Page 45: ...www SteamPoweredRadio Com FIGURE 8 1 MOTHER BOARD REPRODUCER FIGURE 8 2 MOTHER BOARD RECORDER REPRODUCER PDII 080674 KM AIO J2 0 JI II II 0 J3 0 0 JI J3 0 0 0 PAGE 8 2...

Page 46: ...000 Capacitor 4 7 mfd 35v tantalum C416 677 0003 000 Capacitor 300 pfd 300v silver mica C417 677 0003 000 Capacitor 300 pfd 300v silver mica C418 681 0048 000 Capacitor 015 mfd 200v paper C419 696 007...

Page 47: ...00 Resistor lk ohm watt R416 626 0287 000 Resistor 10k ohms watt R417 626 0279 000 Resistor 4 7k ohms watt R418 626 0239 000 Resistor 100 ohms watt R419 626 0279 000 Resistor 4 7k ohms watt R420 626 0...

Page 48: ...13 0001 000 FIGURE 8 3 PDII 080674 KM DESCRIPTION Resistor 220 ohms watt film Resistor 1 8k ohms watt Resistor 100k ohms watt Potentiometer 10k ohms watt Resistor 2 2k ohms watt Resistor 180 ohms watt...

Page 49: ...080674 KM DESCRIPTION CAPACITORS Capacitor 4 7 mfd 35v tantalum Capacitor 10 mfd 25v electrolytic Capacitor 4 7 mfd 35v tantalum Capacitor 100 pfd 300v silver mica Capacitor 1 mfd 35v tantalum Capaci...

Page 50: ...STORS Resistor 4 7k ohms wa t Resistor l Bk ohms watt Resistor 470 ohms watt Resistor 4 7k ohms watt Resistor 33k ohms watt Resistor 2 2k ohms watt Resistor l0k ohms watt Resistor 4 7k ohms watt Resis...

Page 51: ...www SteamPoweredRadio Com FIGURE 8 4 FIGURE 8 5 PDII 080674 KM RCHi _ _ 81AJ A tJ t r RECORDER FUNCTIONS PC BOARD I 6 I r sT 1 _j OSCILLATOR PC BOARD PAGE 8 8...

Page 52: ...1 mfd 200v paper Capacitor 7 65 pfd adjustable Capacitor 7 65 pfd adjustable Capacitor 10 mfd 25v electrolytic Capacitor 1 mfd 35v tantalum Capacitor 047 mfd 200v paper Capacitor 1 mfd 35v tantalum Ca...

Page 53: ...100k ohms watt Resistor 18k ohms watt Resistor 4 7k ohms watt Resistor 3 3k ohms watt Resistor 330 ohms watt Resistor 22k ohms watt Resistor 22k ohms att Potentiometer lk ohm watt Resistor 100 ohms w...

Page 54: ...00 02 oO0 S4 391 0007 000 TL 526 0002 000 DESCRIPTION POTENTIOMETER Potentiometer 500 ohms 2 watt SWITCHES Switch record red Switch start green Swi tch cartridge sensing Switch stop yellow TRANSFORME...

Page 55: ...I I Cj lQ 4 7 K 4 7 K I 4 7 K 330 J 1 525 MH I 7 20 I I CUE OSCILL ATOR L3 P RESSUR E ROLL ER SOL ENOID L 2 CUE REPRODUCE R4 4 I IOK R 4 0 9 4 7 K CUE DETECTOR r _ _ _ ____ R4 02 22K R403 4 7K R405 47...

Page 56: ...de from both the capstan and pressur e roller b Clean the heads with a soft cloth or cotton swab dipped in a head cleaning solution 2 Monthl y Maintenance a Capstan motor since the capstan motor is a...

Page 57: ...tes is requir ed to test a record play unit and 3 minutes on a play unit Using the procedures outl ined in Section VII check the playback cue sensitivity pr ogram play level and equaliza tion recorded...

Page 58: ...chaser s expense Items manufactured by persons other than Seller shall bear the warranty given by such other persons and no other warranty This warranty shall not be effective if the alleged defect is...

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