Teac A-4070G Скачать руководство пользователя | Manualshive

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Содержание A-4070G

Страница 1: ...34351531 TEAC CORPORATION OF AMERICA 7733 TELEGRAPH ROAD MONTEBELLO CALIFORNIA 90640 PHONE 213 7269303 TEAC TONBAND ANLAGEN VERTRIEBS GmbH 6200 WIESBADEN ERBENHEIM EGERSTRASSE 2 WEST GERMANY PHONE 061...

Страница 2: ...placement information and the prop er procedures for obtaining necessary repair parts If adjustments or repair procedures are not clear or seem difficult to accomplish or should you desire more detail...

Страница 3: ...2ips 0 09 at 3 3 4ips Wow and flutter measured according to weighted NAB standard using TEAC test tape Approx 120 seconds or less for 1200 feet Horizontal or vertical 100 117 200 220 240V AC 50 60Hz...

Страница 4: ...RICAL MEASUREMENT TEST TAPE EMPTY REEL TEST SET BAND PASS FILTER AC DC VIVM RESISTOR OSCILLOSCOPE Fig 3 2 TEAC M 826A TEAC YTT 1003 for 7 1 2ips TEAC YTT 1002 for 3 3 4ips SCOTCH 203 and 150 for test...

Страница 5: ...ld only be removed to perform major maintenance 1 Lay tape deck face down on a soft mat 2 Remove the two 2 screws at the top of the case remove the four 4 screws on rear of case Carefully lift case fr...

Страница 6: ...the chassis you can easily swing out the amplifier for maintenance Most of the replacement components are completely accessible If amplifier assy maintenance is necessary follow these steps 1 2 AMPLIF...

Страница 7: ...n motor Carefully note the wire locations and color codes NOTE After motor replacement check position of capstan pulley on shaft for proper alignment with belt guide REEL MOTOR REMOVAL 1 Disconnect oi...

Страница 8: ...he L R lower head protectors Remove pinch roller Remove lower screw and nylon inserts from slide base assembly located below the pinch roller shaft housing Disconnect slide base assembly coil spring R...

Страница 9: ...CH 4 NOTE K3 REV RELAY R802 BACK TENSION K2 REV RELAY R803 TAPE 0 5 MIL THIN Kl PLAY RELAY R801 TAKE UP K7 REPEAT SENSING RELAY K1l F FWD RELAY K6 REV SENSING RELAY K10 SPEED RELAY K5 FAST RELAY K12 M...

Страница 10: ...head should be heavy pencil line PLAYBACK HEAD The playback head pole should be even with the top of a threaded tape e e HEIGHT ADJ SCREW e m e AZIMUTH ADJ SCREW Fig 5 1 Head Alignment and Adjustment...

Страница 11: ...D ee Q 2 as 2 i Fs f f 1 i t WY oO ina ro y 9 2 2 62 t t t t L CH R CH L CH R CH L CH R CH RECORD PLAY BACK PLAY BACK FORWARD REVERSE 5 NOTE C__iCombination Head M 0292 The position of the wires on th...

Страница 12: ...the spring scale as illustrated slowly draw it away from the pinch roller 4 Do not allow the string so rub against the pinch roller 5 Note the reading on the spring scale at the instant the pinch rol...

Страница 13: ...R 801 should read 54 1V AC B R 802 BACK TENSION Voltage from point A to lower tap of I 802 should read 45 1V AC Tape switch in REGULAR position C R 803 TAPE TENSION 0 5 mil THIN position Voltage from...

Страница 14: ...w the scale toward the hub The spring scale should indicate 300 20 g cm 4 2 4 6 oz inch Adjust R 801 as required BACK TENSION MECHANICAL CHECK el 0 0 Place the reel and spring scale on the left reel t...

Страница 15: ...o the reel anchor Wind several turns of string counterclockwise around the hub and attach a suitable spring scale to the free end of the string Pull the spring scale away from the reel making sure tha...

Страница 16: ...er brake band to drum clearance should be 1 2mm Adjust to proper clearance by repositioning the brake band mount Refer to Fig 6 4 REEL HEIGHT ADJUSTMENT _ _ cm uo Reel height adjustment may be require...

Страница 17: ...kHz tone Connect a digital frequency counter to either line OUTPUT jack The indicated frequency should be 3 kHz 0 5 for all speeds TEST UNIT FLUTTER FREE TAPE FREQ COUNTER METER Fig 6 6 Test Equipmen...

Страница 18: ...annels at 3 3 4ips and both directions All controls mentioned in this book will be printed in bold letters and will be exactly as they appear on the unit Double designated symbol numbers refer to left...

Страница 19: ...signal and adjust the azimuth screw until the oscillo scope shows that the signals are less than 45 in phase Repeat above step for reverse head Secure the screw with a drop of LOCTITE HEIGHT Viewed fr...

Страница 20: ...lockwise 3 Apply a 400 Hz signal at operating reference level 1 of the THD level 4 Adjust FORWARD VR 101 VR 201 REVERSE VR 102 VR 202 to obtaina specified output level of 2 dB at OUTPUT jacks 5 Retard...

Страница 21: ...quency response should be identical RESPONSE iN dB eT 2 i a 27 50 100 500 1K 5K 10K 50K FREQUENCY 1N Hz M 0288 Fig 7 3 Frequency Response playback HEADPHONE OUTPUT CHECK 1 Place OUTPUT controls at spe...

Страница 22: ...n a specified output level of 8 dB at OUTPUT jack PwWNr MIC Input 5 After adjusting LINE controls apply a 400 Hz signal at 60 dB to the MIC IN jacks 6 Rotate the Mic controls fully clockwise 7 The out...

Страница 23: ...REC LEVEL 10 NORMAL lot VR108 208 tol 1 L23 REC METER LEVEL SET 9 305 VRIOT 207 i MONITOR TAPE VRI06 206 NOTE Simplified diagram shown in the RIGIT cha Fig 7 5 Simplified Diagram Record BIAS TRAP ADJ...

Страница 24: ...E IN jack Adjust capacitor FORWARD VC 101 VC 201 REVERSE VC 103 VC 203 for a peak on the level meter Turn the capacitors clockwise until a decrease of 0 5 dB is obtained NORMAL position 7 8 9 Adjust c...

Страница 25: ...dB Make certain that the LINE control is at the specified input level position then set the AF oscillator to 10 kHz Thread a record test tape on the unit and place the mode L R switches up Place the M...

Страница 26: ...osition Do not adjust in re verse mode forward only FREQUENCY RESPONSE HIGH position 1 Thread a blank SCOTCH 203 tape on unit place RECORD MODE EQ and BIAS switches at HIGH tape SPEED at 7 1 2 19cm o...

Страница 27: ...output o 2 4a 8 level 8 dB for 1 THD SBap re oo se ee SSEarEF ERAS Sidon sean p REFERENCE For a 3 THD signal to noise ratio 6 dB is added giving 54 dB 3Z THD is 6 dB above 1 THD level UV3NIT OlLWY ASI...

Страница 28: ...he recording to the beginning and remove the AF oscil lator from the LINE IN jacks Place the unit in record mode and record over this portion of tape again Rewind the tape to the starting point and co...

Страница 29: ...l 4 CLI on rear panel a Cc REC LEVEL SET HIGH Qeo7 Qz2o8 FORWARD REVERSE BIAS TRAP oe sae 020 G22 VR103 203 VRio4 204 Gais Gaia CHECK PONIT Liosve0e RECORD HEAD ae 8 2V 103 203 S PB METER LEVEL SET La...

Страница 30: ...ould be done with proper cleaning materials Refer to Operating Instructions DEMAGNETIZATION Metal parts in contact with the tape will become magnetized after long periods of use except erase head Magn...

Страница 31: ...ted should be cleaned and old oil and dirt removed before relubricating Observe instructions as to type of oil points to be lubricating Motors should be lubricated immediately after use while still wa...

Страница 32: ...5a resistor R 801 Reverse relay K 2c fast relay K 5b resistors R 802 R 803 Reverse relay K 2c fast relay K 5a Resistor R 802 R 803 Reverse relay K 2d fast relay K 5b resistor R 801 Fast relay K 5 K ll...

Страница 33: ...sing relay K 7 sensing ampl Playback head dirty ampli fier to deck connection J 301 monitor switch playback ampl Delay relay K 4c play relay K 1d muting relay K 12 muting diagram Faulty connections he...

Страница 34: ...10 PACKING FOR SHIPMENT...

Страница 35: ...vailable through your nearest TEAC dealer or directly from the TEAC office Changes are constantly being made to make TEAC products better and more reliable Therefore when ordering parts always include...

Страница 36: ...EXPLODED VIEW 1 A 40T70G TRIM PARTS M2 4x10 QD...

Страница 37: ...ad Head Head Head Housing Housing Housing Housing Housing Housing Panel Trim TRIM PARTS Assy Plate DM EX Plate TCA only Screw 3x20 Assy Escutcheon Pinch Roller Panel Control Assy Trim Sash Side Trim S...

Страница 38: ...EXPLODED VIEW 2 A 4070G ABOVE MAIN CHASSIS...

Страница 39: ...50241020 50190780 50241040 50221000 ABOVE MAIN CHASSIS DESCRIPTION Index Counter Belt Counter Bracket Index Counter Solenoid Brake Bracket Brake Solenoid Bracket Brake Spring L Bracket Brake Spring R...

Страница 40: ...EXPLODED VIEW 3 A 4070G BELOW MAIN CHASSIS...

Страница 41: ...20W Resistor Wire Wound 1kQ 20W Mount Foot Chassis Transport Transformer Power Belt Changer Side Frame Right PC Board Assy Relay A PC Board Assy Relay B Shaft Belt Change Knob Belt Change Bracket SW A...

Страница 42: ...EXPLODED VIEW 4 A 4070G ee 3 C o Out s y F OP O W Y 0 a on fe at s o l e s vAN 06 40 fat nk Ry 0 hn K wy 2 DDL 6 6 Your a ay 9 o fn v2 e he s N ym G i eg 4 a ck i t i p N A T Oh ne Z f 26 3 D 0433...

Страница 43: ...ing A Head Spring Head B Bracket PB Head A Head E R Reverse Bracket E R Head A Bracket Head PC Board L PC Board Head Spring Lifter Bracket Lifter Spring Bracket Head PC Board R Tape Guide Post Tape Re...

Страница 44: ...5 2 50221610 Spring Slip 5 3 50163090 Reel Lock 5 4 50163331 Shaft Reel Lock B 5 5 50163340 Reel Sheet 5 6 50163291 Reel Table 5 7 50221650 Spring Height Adjust 5 8 50163311 Brake Drum 5 9 50221630 T...

Страница 45: ...M4x20 00 con D 0436 TEAC PARTS NO DESCRIPTION 50120420 6 1 50125232 Pulley Motor 6 2 50173140 Rubber Cushion Ring 6 3 50173160 Shoulder Washer 6 4 71021010 Motor Capstan 6 5 6 6 6 7 Cap Motor Assy 50...

Страница 46: ...EXPLODE VIEW 7 PREAMPLIFIER CHASSIS fo y AY 4 man ee 0 Ltd LUE G o OY oxi 9 gs e Zi Q BARVOUTHAY OS ae 9 44 D 0435 1...

Страница 47: ...r Jack Phone Single Microphone Jack Phone 3 cond Headphone Insulator Washer B Fiber Washer Socket Lamp Lamp 8V Meter Cushion Meter Holder Four Push SW Assy Chassis Preamplifier Bracket Push SW Assy SW...

Страница 48: ...ailable through your nearest TEAC dealer or directly from the TEAC office Changes are constantly being made to make TEAC products better and more reliable Therefore when ordering parts always include...

Страница 49: ...A 3aNIT BA SIN GuvOa dd S Ia a YELIBLU YEL BLU REO WHT PNK WHT C240 10 28 oe R2eo82K Rzea56K 3 S fs 5 GRY RED HSalIsIi ndnvsatd REDIWHT M o298 O3a NYO 03u G34 LHM G34 Nua HA na p PLANUS TBA 2NgS LHA N...

Страница 50: ...50423510 2SC733 Y Q106 206 50423510 2SC733 Y Q107 207 50424340 2SC1000 BL Q108 208 50424340 2SC1000 BL Q109 209 50424340 2SC1000 BL Q110 210 50424340 2SC1000 BL Ql11 211 50423510 2SC733 Y Q112 212 504...

Страница 51: ...ARTS NO 50515490 50515300 50515580 50515580 50518240 50515340 50515650 50515520 50515700 50515280 50515330 50515460 50515300 50515540 50515490 50515500 50515660 50515260 50515410 50515340 50515520 505...

Страница 52: ...OTED c101 201 C102 202 C103 203 C104 204 105 205 C106 206 C107 207 C108 208 C109 209 C110 210 C111 211 C112 C113 213 C114 214 C115 215 C116 216 C118 218 119 219 C120 220 C121 221 C122 222 C123 223 505...

Страница 53: ...548320 50554330 50549140 50548510 50554040 50554810 50554570 50554810 50554040 50546030 50543720 50548290 50548470 50548130 50548240 COILS 50566410 50566300 50566370 PREAMPLIFIER conrrnuzp DESCRIPTION...

Страница 54: ...5220 50515380 50554180 50548210 50548530 50544040 50548040 BIAS OSCILLATOR DESCRIPTION PC Board Assy Bias Osc Transformer Osc Transistor 2SC971 Transistor 2SC971 Metal Oxide Film 1502 1W Carbon 332 1...

Страница 55: ...RIGHT Calz 01 400V cf RED BRN t e Qb E4 Zo Dz o o 8 Guvos BLU RED AMP PC BOARD REC L CH RED WHT AMP P c BOARD REC R CH BLK RED OSC P C BOARD WHT RED YEL 20P CONNECTOR GRN REC SW WHT BLK YEL REPEAT S...

Страница 56: ...50548390 50548390 VC101 104 50547070 VC201 204 50547070 BIAS ADJUST ASSY DESCRIPTION PC Board Assy Bias Adjust Spring Hook Socket 9P Plug 9P with Cable Relay 6P DC24V MH6P Relay Socket with Clamp Sil...

Страница 57: ...0548060 50548060 50548060 PARTS NO nb Ss Oe ee z o C J is 3 ass 8 5 x a 5 2 g g Oo o Fa Lio O38 o a 3 8 5 4 5 3 2 382 g pis 22 38 G2 z 8 8 fj nak 68 85 8 3 she 3 8 8S o g 9 BF Be geee 5 2 s8Ue 2 2 ne...

Страница 58: ...NO R806 K4 5 8 K6 7 9 D1 8 D6 7 9 C809 c810 C822 823 C830 C8411844 C846 847 C852 853 C857860 TEAC PARTS NO 50490580 50520070 50610730 50610800 50422380 50422360 50554000 50554620 50529050 50529050 505...

Страница 59: ...To cap moTor BS TO TRANS FORMER TO TRANS FORMER To TRANS YE FORMER MS 0334S yag ti 2 g a 2 3rd DESCRIPTION PC Board Assy Power Supply Transistor 2SC1000 BL Silicon Stack B Diode SIBO1 02 Diode FR2 06...

Страница 60: ...0BL 2SC732BL Q108 208 2SC1000BL 2SC732BL NOTES guo2 202 2sa4gay 109 209 2sc1000BL 28C732BL Q103 203 2SC733 Q110 210 2SC1OOOBL 2SC732BL All resistors values in ohms 1 4watt K 10000hm STEREO TAPE DECK A...

Страница 61: ...AT SENSING 7 OTE CONTROL Jso2 DUMMY PLUG 20 19 18 17 6 IS 14 13 oo 9 8 7 6 5 4 3 O oe oe o o _ 3 a NOTES All relays shown not energiged stop mode TAPE SPEED switch shown in the 7 1 2 position Frequenc...

Страница 62: ...233061 AND AFTER A 4070 11161 AND AFTER A 4070G 19191 AND AFTER A 6010GSL 71691 AND AFTER A 7010GSL 27991 AND AFTER A 7030GSL 25711 AND AFTER TEAC 7030GSL 26341 AND AFTER For reference see the appropr...

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