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Sony SVT-N72P Service Manual

Time lapse videocassette recorder
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TIME LAPSE VIDEOCASSETTE RECORDER
SVT-N72P
SERVICE MANUAL
1st Edition

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Summary of Contents for Sony SVT-N72P

  • Page 1 TIME LAPSE VIDEOCASSETTE RECORDER SVT-N72P SERVICE MANUAL 1st Edition...
  • Page 2 électrique, d’incendie ou de blessure n’effectuer que les réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres. Pour toute réparation faire appel à une personne compétente uniquement. SVT-N72P (E)
  • Page 3 Gebrauchsdauer der Batterien batterij zal dan op correcte wijze “nicht mehr einwandfrei funktioniert”. Um verwerkt worden. sicherzugehen, kleben Sie die Batteriepole z.B. mit einem Klebestreifen ab oder geben Sie die Batterien einzeln in einen Plastikbeutel. 1 (P) SVT-N72P (E)

  • Page 5: Table Of Contents

    Disassembling the Main Parts of the Mechanism ......... 2-10 3-1. How to Make the Mechanism Move ..........2-10 3-1-1. Operating the Loading Motor by the Manual Method ..... 2-10 3-1-2. Making the Mechanism Move Using the Manual Method ..2-11 3-2. Mechanism Unit ................2-11 SVT-N72P (E)
  • Page 6 T Load Lever Assembly ..............2-30 3-18. Tape Sensors, Reel Sensor and EP SW Lever ........2-31 3-18-1. Tape Top Sensor and Tape End Sensor ........2-31 3-18-2. Reel Sensor ................2-31 3-18-3. EP Switch Lever ............... 2-32 SVT-N72P (E)
  • Page 7 Exploded Views ..................4-2 4-3. Electrical Parts List ..................4-8 5. Semiconductor Pin Assignments 6. Block Diagrams Overall Wiring .................... 6-1 Mechanism Connection ................6-2 Audio Circuit ....................6-3 Video Circuit ....................6-4 System Control & Servo Circuit ..............6-5 SVT-N72P (E)
  • Page 8 Servo Circuit Waveforms ..................7-6 Display (FLD) Grid/Anode Assignment Drawing & Table ........7-6 TM-1, TM-2 Board ....................7-7 PW-1 Board ......................7-8 8. Board Layouts CP-1 Board ......................8-1 TM-1 Board ......................8-2 TM-2 Board ......................8-2 PW-1 Board ......................8-2 SVT-N72P (E)

  • Page 9: Manual Structure

    Related manuals In addition to this Service Manual, the following manuals are provided..Operating Instructions SVT-N72P (Supplied with equipment) Part number: 3-206-992-XX Contents This service manual is organized by following sections. Section 1...

  • Page 11: Service Overview

    Hours of the power supply being. ALARM DATA: Number of ALARM REC. Total counts of ALARM. The data for the maintenance tables are memoried in E PROM, and the memory can be kept if the timer micro- computer is reset. SVT-N72P (E)
  • Page 12 Mechanism Mode Display Contents Mode. No. Mechanism mode Mode. No. Mechanism mode Mode. No. Mechanism mode CASSETTE OUT INTERMITTENT REC STAND-BY REVERSE STILL STOP REVIEW STILL FAST FORWARD REC-PAUSE REWIND FRAME ADVANCE REVERSE PLAY PLAY REVERSE FRAME ADVANCE SVT-N72P (E)

  • Page 13: Removal Of Cabinet, Mechanism Unit, And Main Board

    . Electrical adjustments for the this model can be performed with only the cabinet removed. . When replacing the bottom cover, do not tighten the screws (2) too much. Excess tightness may damage the screws taps on the chassis. Cabinet Clamps (A) Main Unit Front Panel Bottom Cover Fig. 1-1-1 SVT-N72P (E)

  • Page 14: Removing The Mechanism Main Unit And The Cp-1 Pwb Assembly

    TM - 2 PWB chassis. Lid Opener Lever Fig. 1-1-2 CP-1 PWB Assembly Mechanism Main Unit TM - 1 PWB PW - 1 PWB TM - 2 PWB Clamp ( D ) Chassis Fig. 1-1-3 SVT-N72P (E)

  • Page 15: Temporarily Setting Up And Connecting Cp-1 Pwb Assembly

    CP-1 PWB Assembly (Foil side) PW-1 PWB Jutted part of Screws Cassette Holder Terminal Board Mechanism Main Unit Door Opener Lever TM-2 PWB Front Panel Cassette Compartment Cassette Door TM-1 PWB (Position A) Cassette Door (Position B) Fig. 1-1-4 Fig. 1-1-5 SVT-N72P (E)

  • Page 16: Circuit Board Locations

    Setting Up and Connecting CP-1 PWB Assem- bly) 3. Unsolder the leads of the battery from the soldering side of the CP-1 board and remove the battery. Solder the backup battery in the reverse procedure of removal. Battery SVT-N72P (E)

  • Page 17: Mechanical Adjustments

    . A “drop” of oil is the amount of oil remaining on the tip of a rod with a diameter of 1. 5 mm after it is dipped in oil to a depth of 1 cm and then taken out. SVT-N72P (E)

  • Page 18: Regular Checks

    As life may be shortened if foreign particles and dusts remain accumulated on the tape guides and rotating and contacting portions, clean if dirty. Dusts and other foreign particles on the tape guides may also shorten the tape life and lower picture quality, therefore clean thoroughly. SVT-N72P (E)

  • Page 19: Service Tools And Cleaning

    Hexagonal wrench (VHJ-0113 ) —————— Spare hexagonal wrench for upper drum fitting tool kit No.1, 2, 3 No. 4 No. 5 No. 6 No. 7 No. 8 No. 9 No. 10 No. 14 No. 15 No. 11 No. 12 No. 13 SVT-N72P (E)

  • Page 20: Cleaning

    FE head, the ACE head, the reel table, the pulley and the reel belt with a soft cloth, or chamois, moistened with methyl alcohol. If the dirt on the tape guide cannot be cleaned off, replace the tape guide. Cylinder (Drum) Tape path surface Video head Fig. 1-2-2 SVT-N72P (E)

  • Page 21: An Overview Of The Mechanism

    2-1. Names of the Main Parts 2-1-1. Cassette Mechanism Assembly Special washer Washer Stand L Release lever Lid opener spring Tray lock spring Pinion gear Under frame Lock gear Door opener lever Gear holder Drive gear Fig. 2-1-1 SVT-N72P (E)

  • Page 22: Topview

    Supply reel assembly T soft brake assembly S soft lever EP switch Take up reel asswembly S brake T brake act slide T reel gear EP sw lever assembly Clutch mounting assembly S reel gear Fig. 2-1-2 SVT-N72P (E)

  • Page 23: Underside

    BT spring lever assembly Clutch change lever MC-1 PWB assembly Crescent slide S brake act slide Brake act lever Reel pulley Friction gear assembly Wheel gear 2 Wheel gear 1 assembly Worm gear assembly Loading motor assembly Fig. 2-1-3 SVT-N72P (E)

  • Page 24: An Overview Of The Mechanism Modes

    Relationship Between Mode Positions HEX DATA SW DATA 2 SW DATA 1 SW DATA 0 FF/REW EJECT BRAKE CASSETTE IN PLAY/STOP IN REW STILL/SLOW INITIAL H: 5 V IDLER L: 0V Low activ REVIEW C Z Y X SVT-N72P (E)

  • Page 25: Movement Check List For The Main Parts Of The Mechanism

    Some models are equipped with the SELF-DIAGNOSIS DISPLAYS function. Use it as a means of finding out the symptoms and cause of the error before performing repairs. For details, refer to the separate service manual for the respective models. SVT-N72P (E)

  • Page 26: Disassembling The Main Parts Of The Mechanism

    There are two methods of operatin the loading motor, and these are explained in sections 3 1-1. The above movements can also be performed with-ou operating the loading motor, by following the metho explained in Section 3-1-2. Loading motor Fig. 3-1-1 2-10 SVT-N72P (E)

  • Page 27: Making The Mechanism Move Using The Manual Method

    1 Flat cable 5 Screw Wheel gear 2 Screw Dew sensor connector 5 Screw FE head connector ACE head connector 3 Flat cable Fig. 3-1-2 Fig. 3-2-1 7 Tray lock lever 8 Lid opener lever 6 Tray Fig. 3-2-2 2-11 SVT-N72P (E)

  • Page 28: Cassette Drive Mechanism

    (grease the outer rim Dowel chassis of the teeth) 4 Hole 3 Gear holder Fig. 3-3-3 3 Hook 4 Hole Fig. 3-3-1 Ensure correct interlocking Pinion gear Ensure correct interlocking Drive gear Lock gear Start rack gear Fig. 3-3-2 2-12 SVT-N72P (E)

  • Page 29: Door Opener, Under Frame And Stand L

    8 Positioning mark lever 5 Tray != Drive shaft 6 Clamp 0 Positioning mark 5 Front rack gear Clamps Stand R 9 Main cam 7 Door opener !; Hole lever 2 Under frame 1 Clamp Fig. 3-3-4 Fig. 3-3-6 2-13 SVT-N72P (E)

  • Page 30: Cleaner Roller Assembly

    6 on the audio R/P head assembly. 4 Cleaner roller assembly 3 Clamp 2 Cleaner lever 1 Clamp B Plastic spring A Plastic spring 5 Shaft 6 Mounting Fig. 3-4-1 2-14 SVT-N72P (E)

  • Page 31: Cylinder (Drum)

    7 Rotor 5. After attaching, refer to “4-3. Tape path adjustment” b Hole and the section on electrical adjustments in the service manuals for the respective models, and adjust the switching position of the servo circuit. Fig. 3-5-3 2-15 SVT-N72P (E)

  • Page 32: Cylinder Mounting

    4. After assembly, clean the tape path surface of the cylinder (drum). 5. After replacing the cylinder mounting or the cylinder assembly, do the tape path adjustment as instructed in Section 4-3, and do the switching position adjustment of the servo circuit. 2-16 SVT-N72P (E)

  • Page 33: Fe Head And Ace Head

    4. After assembly, refer to Section 4-3, and adjust the head height, the azimuth and the tracking (X) posi- tion. 1 Screws 2 Audio R/P head assembly (ACE head) 4 Hole Fig. 3-6-2 3 Washer 5 Pin 6 Clamp Fig. 3-6-1 2-17 SVT-N72P (E)

  • Page 34: Capstan Motor

    2 Screws 4 Screws 5 Capstan motor 4 Heat transfer spacer 3 Capstan motor 6 Connector 5 Connector 2 Capstan mounting 1 Screw 3 Reel belt Fig. 3-7-2 1 Reel belt Fig. 3-7-1 2-18 SVT-N72P (E)

  • Page 35: Capstan Brake Assembly

    Fig. 3-7-3 5 Worm gear assembly 4 Damper 1 Loading motor assembly Apply grease 2 Lead wires (VHJ-0100) Clamps Gray: negative Orange: Apply positive grease 3 Clamp (VHJ-0114) Fig. 3-8-1 2-19 SVT-N72P (E)

  • Page 36: Pinch Roller Pressur Mechanism

    Assembly Note: 1. Be careful to keep the surface of the pinch roller free of dust and dirt. 4 Pinch roller lever 3 Spring assembly 5 Indentation 2 Pinch lift mounting 6 Clamp 1 Clamp Fig. 3-9-1 2-20 SVT-N72P (E)

  • Page 37: Pinch Lift Cam And Pinch Cam Gear

    OPT pinch relay gear 2, the main cam, and the OPT pinch relay gear. !] Indentation 5 Pinch lift cam !- Arrow ![ Round hole != Square mark 9 OPT pinch 6 Pinch cam gear relay gear Fig. 3-9-3 2-21 SVT-N72P (E)

  • Page 38: L Guide Act Lever Assembly, Load Lever Assembly And Stopper Lever Assembly

    1 Stopper spring Sub BT != Pin spring 8 Stopper lever assembly S incline 9 BT spring mounting lever assembl 9 Shaf t assembly 7 Stopper ![ Cam groove 3 Clamp !- Stopper Fig. 3-11-1 0 Shaft Fig. 3-10-1 2-22 SVT-N72P (E)

  • Page 39: Reel Drive Mechanism

    3 Hole Clutch mounting 3 Washer assembly 2 Reel pulley 6 Clutch change spring 8 Clutch change lever 4 Shaft 4 Washer 7 Clamp 5 Friction gear 5 Shaft assembly Fig. 3-12-2 9 Shaft 0 Shaft Fig. 3-12-1 2-23 SVT-N72P (E)

  • Page 40: T Reel Gear

    2 Clamp 3 T soft brake 4 T brake assembly assembly 6 S reel gear 1 S soft 1 T soft spring spring 2 Clamp 5 Washer Shaft 7 Shaft Shaft 8 Shaft Fig. 3-12-4 Fig. 3-12-3 2-24 SVT-N72P (E)

  • Page 41: Brakes

    Clamp assembly 1 Hole Brake return spring 1 Clamp !- Shaft 8 Clamp 8 Shaft 9 Shaft Wheel ![ Cam groove 4 Clamps gear 1 5 Clamp !- Shaft Fig. 3-13-1 !/ Shaft !\ Hole Fig. 3-13-2 2-25 SVT-N72P (E)

  • Page 42: S Brake Act Slide And Bt Spring Lever Assembly

    9 Clamp !- on the S brake act slide 1 with the arrow != on the mechanism chassis. Fig. 3-13-3 Apply grease Apply grease S brake act slide 3 BT spring lever Apply grease assembly Fig. 3-13-4 2-26 SVT-N72P (E)

  • Page 43: Guides

    2 Guide roller assembly 2 S load lever T incline Fig. 3-14-1 assembly mo u n t i n g assembly Apply grease to the top, underside and 4 T load lever sides of the rail. assembly Fig. 3-14-2 2-27 SVT-N72P (E)

  • Page 44: Wheel Gear 2, Main Cam And Opt Pinch Relay Gear

    G respectively in Fig. 3-15-2. Align the hole in the Front rack main cam 4 with the gear shaft of the OPT pinch relay gear 6. 2 Wheel gear 2 Main cam Crescent slide ![ Wheel gear 1 Fig. 3-15-2 2-28 SVT-N72P (E)

  • Page 45: Crescent Slide

    0 is aligned with the pin !- on the S brake act slide, before pressing the crescent slide 4 into place. Check that the clamps 3 and 5 are engaged. 4. After assembly, check that each lever and each brake is working properly. 2-29 SVT-N72P (E)

  • Page 46: S Load Gear, T Load Gear, S Load Lever Assembly And T Load Lever Assembly

    3 S load spring 5 T load gear 1 Clamp 2 S load Fig. B: When tape unloading is complete gear T load gear S load gear 8 Shaft 9 Shaft Parts A (apply grease here) Fig. 3-17-3 Fig. 3-17-1 2-30 SVT-N72P (E)

  • Page 47: Tape Sensors, Reel Sensor And Ep Sw Lever

    2. Do the soldering quickly. Turn the photoreceptors to face the LED 3 2 Photo 2 Photo diode diode (Tape end (Tape top sensor) sensor) Protrusion 3 LED Align the cuts Holders 4 Holder Fig. 3-18-2 Holders Front Fig. 3-18-1 2-31 SVT-N72P (E)

  • Page 48: Ep Switch Lever

    EJECT mode, the EP switch lever 3 does not touch the EP switch 5. 1 EP switch spring 3 EP switch lever 4 Protrusion on back 2 Clamp (apply grease here) 5 EP switch Fig. 3-18-3 2-32 SVT-N72P (E)

  • Page 49: Mechanism Checks And Adjustments

    3. After switching to FF mode, wait for at least 10 seconds and then measure the torque value of the reel table on the take up side. It should be at least 600g.cm (lock torque). Stick black vinyl tape over the tape sensor holes. Fig. 4-1-2 2-33 SVT-N72P (E)

  • Page 50: Adjusting The Bt Lever Assembly Position And Checking The Back Tension Torque In Play Mode

    Fig. 4-3-1 Point A Fig. 4-2-1 4-2-2. Checking the Back Tension Torque Play Mode 1. Mount the cassette torque meter (VHJ-063S) and switch to PLAY mode. 2. Check that the back tension torque is between 30 and 50g.cm. 2-34 SVT-N72P (E)

  • Page 51: Adjustment Procedure

    4. When checking the tape path by eye, use a dental the height adjustment tool (VHJ-0111) when seen from mirror. directly overhead. 1 Load lever assembly Height adjustment tool (VHJ-0111) 2 Protrusion Adjustment nut Fig. 4-3-2 2-35 SVT-N72P (E)

  • Page 52: Guide Roller Height Adjustment

    50 % 50 % gradually until the back half of the envelope waveform becomes flat. Fig. 4-3-4 2 Check that the output for the back half of the envelope waveform is at its maximum at the tracking centre. 2-36 SVT-N72P (E)
  • Page 53 8. Play the alignment tape (VHJ-0009), rotate screw C, velope waveform to maximum. Slotted and maximize the audio output waveform (actual screwdriver azimuth adjustment) Marking Audio R/P head assembly (ACE head) Screw Screw Audio R/ Phead assembly Fig. 4-3-5 Fig. 4-3-6 2-37 SVT-N72P (E)

  • Page 54: Checking After Adjustment

    S tape guide Audio R/P head assembly (ACE head) Cylinder S guide (drum) No.0 tape Loading guide T guide roller roller T tape guide guide post Pinch roller Full erase BT post head Capstan shaft Fig. 4-3-7 2-38 SVT-N72P (E)

  • Page 55: Electrical Adjustments

    TP182 TP183 CP-1 PWB (Foil side) Fig. 2-1-1 . Set the REC/PLAY SPEED button to indicator panel to the 3H (3 hours) mode. . Self-recoding means “Record any broadcasting or video signal and play back the just-recorded portion”. SVT-N72P (E)

  • Page 56: Switching Position Adj

    T = 6.5 H ±0.5 H 0.5 H REC button Start of play back display more Fall Front edge of vertical sync signal then adjusting withi withi period 10 sec. 2 sec. sec. 10 sec. RF.SW.PULSE Fig. 2-1-2 Fig. 2-1-3 SVT-N72P (E)

  • Page 57: Spare Parts

    Therefore, specified parts should be used in the case of replacement. 2. Standardization of Parts Some repair parts supplied by Sony differ from those used for the unit. These are because of parts common- ality and improvement. Parts list has the present standardized repair parts.

  • Page 58: Exploded Views

    A-8345-245-A s MOUNTED CIRCUIT BOARD, PW-1 3-965-446-01 s SCREW, SPECIAL A-8345-242-A s MOUNTED CIRCUIT BOARD, CP-A 3-968-578-01 s HOLDER A-8344-348-A s MOUNTED CIRCUIT BOARD, TM-2 4-942-568-01 s EMBLEM (N0.5),SONY A-8345-241-A s MOUNTED CIRCUIT BOARD, TM-1 1-251-828-11 s SOCKET, AC INLET SCREWS/WASHER 1-518-833-11 s INDICATOR TUBE 3-203-300-01 s COVER, BOTTOM Part No.
  • Page 59 3-960-915-01 s LEVER, DOOR OPENER 3-960-916-01 o HOLDER, GEAR 3-960-939-01 s SCREW (2.6X6), SPECIAL 3-960-952-01 o STAND (L) 3-960-954-01 s FRAME, LOWER 3-960-959-01 s GEAR, LOCK 3-960-960-01 s GEAR, PINION 3-961-301-01 s SPRING,LID OPENER 3-961-302-01 s LEVER,RELEASE 3-961-303-01 s SPRING,TRAY LOCK SVT-N72P (E)
  • Page 60 3-961-037-01 s MOUNT ASSY, S INC LINE 3-193-669-01 s HEAD, ERASE (FULL) 3-961-038-01 s SCREW (2X3), SPECIAL 3-735-630-01 s ROLLER ASSY,GUIDE 3-963-789-01 s BAND (ASSY), BRAKE 3-735-754-01 s WASHER, ADJ (PLA) 3-977-065-01 s REEL, SUPPLY (ASSY) 3-735-760-01 s WASHER,SPECIAL (3) (PLA) SVT-N72P (E)
  • Page 61 3-960-980-01 s SCREW (2.6X7), SPECIAL 3-207-042-01 s CYLINDER (UPR) 3-961-022-01 s LEVER, EP SWITCH 3-206-565-01 s MOUNT, MOTOR CYLINDER 3-961-023-01 s SPRING, EP SWITCH 3-206-679-01 s GROUND, CYLINDER CHIP 3-961-033-01 s SCREW (2.6X8), SPECIAL 3-206-680-01 s SPRING, CYLINDER GROUND SVT-N72P (E)
  • Page 62 3-204-110-01 s MOUNT (ASSY), LIFT (JG) 3-735-630-01 s ROLLER ASSY,GUIDE SCREW 3-735-760-01 s WASHER,SPECIAL (3)(PLA) 3-961-001-01 s SPRING, T SOFT Part No. SP Description 3-961-008-01 s SLIDE, T ACT BRAKE 3-961-021-01 s SCREW (2.6X6), SPECIAL 7-685-647-79 s SCREW +BVTP3X10(EP-FE/ZNBK/CM2 SVT-N72P (E)
  • Page 63 3-963-788-01 s BAR (ASSY), ACT BRAKE LEVER 3-960-996-01 s SPRING, S ROAD 3-963-793-01 s GEAR (2), WHEEL 3-960-997-01 s LEVER ASSY, S ROAD 3-963-796-01 s MOUNT, CRESCENT (HOLDER) 3-960-998-01 s GEAR, T ROAD 3-973-491-01 s WASHER (3.6X0.5), SPECIAL SVT-N72P (E)

  • Page 64: Electrical Parts List

    1-164-156-11 s CAPACITOR,CERAMIC 0.1MF/25V F C3069 1-164-156-11 s CAPACITOR,CERAMIC 0.1MF/25V F C3070 1-137-643-11 s CAPACITOR,ELECT 10MF 16V C3073 1-164-156-11 s CAPACITOR,CERAMIC 0.1MF/25V F C3075 1-164-156-11 s CAPACITOR,CERAMIC 0.1MF/25V F C3076 1-164-156-11 s CAPACITOR,CERAMIC 0.1MF/25V F C3078 1-165-931-11 s CAPACITOR,CERAMIC 0.01MF 50V SVT-N72P (E)
  • Page 65 1-216-833-11 s RESISTOR,CHIP 10K 1/10W (1608) L3005 1-414-540-11 s INDUCTOR 1.1UH R3038 1-216-821-11 s RESISTOR,CHIP 1.0K 1/10W(1608) L3006 1-414-540-11 s INDUCTOR 1.1UH L3007 1-414-540-11 s INDUCTOR 1.1UH R3039 1-216-821-11 s RESISTOR,CHIP 1.0K 1/10W(1608) R3040 1-216-821-11 s RESISTOR,CHIP 1.0K 1/10W(1608) SVT-N72P (E)
  • Page 66 1-216-833-11 s RESISTOR,CHIP 10K 1/10W (1608) R3118 1-216-833-11 s RESISTOR,CHIP 10K 1/10W (1608) R3119 1-216-833-11 s RESISTOR,CHIP 10K 1/10W (1608) R3120 1-216-829-11 s RESISTOR,CHIP 4.7K 1/10W(1608) R3121 1-216-833-11 s RESISTOR,CHIP 10K 1/10W (1608) R3122 1-216-833-11 s RESISTOR,CHIP 10K 1/10W (1608) 4-10 SVT-N72P (E)
  • Page 67 1-165-931-11 s CAPACITOR,CERAMIC 0.01MF 50V C1211 1-137-643-11 s CAPACITOR,ELECT 10MF 16V C1875 1-165-931-11 s CAPACITOR,CERAMIC 0.01MF 50V C1213 1-165-931-11 s CAPACITOR,CERAMIC 0.01MF 50V C2001 1-124-638-11 s CAPACITOR,ELECT 22MF/10V C1221 1-162-916-11 s CAPACITOR,CERAMIC 12PF/50V CH C2002 1-137-643-11 s CAPACITOR,ELECT 10MF 16V 4-11 SVT-N72P (E)
  • Page 68 1-410-521-11 s MICRO INDUCTOR 100UH Q2047 8-729-920-31 s TRANSISTOR DTC343TK L1221 1-410-514-11 s MICRO INDUCTOR 27UH L1230 1-414-142-11 s MICRO INDUCTOR 1 UH Q2048 8-729-027-59 s TRANSISTOR DTC144EKA (T146) L1231 1-410-518-41 s MICRO INDUCTOR 56UH Q2050 8-729-027-59 s TRANSISTOR DTC144EKA (T146) 4-12 SVT-N72P (E)
  • Page 69 1-243-846-11 s RESISTOR,CHIP 1.2K R1618 1-216-823-11 s RESISTOR, CHIP 1.5K 1/10W R1203 1-249-414-11 s RESISTOR,CARBON 560 1/4W SMALL R1619 1-216-814-11 s RESISTOR,CHIP 270 1/16W 1608 R1204 1-216-829-11 s RESISTOR,CHIP 4.7K 1/10W(1608) R1621 1-216-815-11 s RESISTOR,CHIP 330 1/10W 1608 4-13 SVT-N72P (E)
  • Page 70 1-216-839-11 s RESISTOR,CHIP 33K 1/10W 1608 R2203 1-216-815-11 s RESISTOR,CHIP 330 1/10W 1608 R2204 1-245-318-11 s RESISTOR,CHIP 120K RY101 1-755-468-11 s RELAY T2001 1-431-150-11 s TRANSFORMER, OSC 70KHZ X1001 1-760-597-11 s OSCILLATOR,CRYSTAL(3.579545MHZ X1002 1-577-667-11 s CRYSTAL OSCILLATOR X1201 1-579-592-11 s OSCILLATOR,CRYSTAL(17.73447MHZ 4-14 SVT-N72P (E)
  • Page 71 7-682-161-09 s SCREW +P4X8 Y5094 7-688-004-01 s WASHER W4 SMALL L5204 1-414-540-11 s INDUCTOR 1.1UH L5205 1-414-540-11 s INDUCTOR 1.1UH Y5095 7-688-004-01 s WASHER W4 SMALL PR511 1-533-611-11 s PROTECTOR, IC 1.0A 50V PR512 1-533-611-11 s PROTECTOR, IC 1.0A 50V 4-15 SVT-N72P (E)
  • Page 72 1-249-439-11 s RESISTOR,CARBON 68K 1/4W SMALL or Q'ty Part No. SP Description R7130 1-249-408-11 s RES,CARBON 180 1/4W (SMALL) 1-534-827-14 s CORD,POWER (3P)(UL/CSA) R7131 1-249-407-11 s RES,CARBON 150 1/4W (SMALL) 3-206-992-01 s MANUAL, INSTRUCTION R7132 1-249-408-11 s RES,CARBON 180 1/4W (SMALL) 4-16 SVT-N72P (E)
  • Page 73 1SS133T-77 LN59L CATHODE 2SB734-34 2SC3668-Y 2SC4483-S-AN ANODE ANODE CATHODE 1SS244-T-77 1SS83 ERC91-2 GMA01U-BT DTC114EF DTC114EL-TL2 DTD113ZK CATHODE ANODE 2SK1460LS PN263L-NC 2SC1009A 2SC2814-F4-TB ANODE CATHODE 1.5KE 150A AG01-V2 143 EK AK04V2 2SA1318-S AK04-V2 2SD2396-H AP01C-V0 DTC114EKA-T146 DB155G-S RB441Q-40T-77 SF-24 SVT-N72P (E)
  • Page 74 IC, Other [|IC|] [|OTHER|] TC4S30F GPIS094HCZ TC4S81F PC123U2 SG-105F BR24C08 LA6458D TOP VIEW UPD4053BC TOP VIEW CXA1203M LA7116 TOP VIEW L5431-AA LA71582M-MPB LB1643L LC74781-9832 MN12510F MN1381-R PST9128NR UPD78F4928GF-P27-3BA SVT-N72P (E)

  • Page 75: Block Diagrams

    Overall Overall Section 6 Block Diagrams Overall Wiring SVT-N72P (E)

  • Page 76: Mechanism Connection

    Mechanism Connection Mechanism Connection Mechanism Connection MC-1 DEW SENSOR MC-5 SVT-N72P (E)

  • Page 77: Audio Circuit

    Audio Circuit Audio Circuit Audio Circuit IC101 SVT-N72P (E)

  • Page 78: Video Circuit

    Video Circuit Video Circuit Video Circuit IC161 IC101 IC121 SVT-N72P (E)

  • Page 79: System Control & Servo Circuit

    System Control & Servo Circuit System Control & Servo Circuit System Control & Servo Circuit IC301 (1/2) MPU SYSTEM CONTROL, TIMER, TUNING CONTROL IC306 IC305 IC302 IC301 IC303 IC309 IC711 IC304 IC308 SVT-N72P (E)

  • Page 80: Schematic Diagrams

    CP-1 (VA-A) CP-1 (VA-A) Section 7 Schematic Diagrams CP-1 Board (VA-A) Video & Audio SVT-N72P (E)
  • Page 81 CP-1 (VA-A) CP-1 (VA-A) SVT-N72P (E)

  • Page 82: Video Circuit Waveforms

    IC101 PIN90 . l a e mode and the condition. 1V/200ns/div 200mV/20us/div c t i n i t n i t IC101 PIN41,46 Alarm signal output. RQ4QEXSY_IC301 REC/PLAY " " . f f n i t 100mV/20us/div WF_V_SE4 SVT-N72P (E)

  • Page 83: Board (Sy-A)

    CP-1 (SY-A) CP-1 (SY-A) CP-1 Board (SY-A) System Control & Servo SVT-N72P (E)

  • Page 84: Servo Circuit Waveforms

    2V/div. 20us/div. 500ms/div. IC301 IC304 PIN 85 UP : PIN 23 LOW :PIN 18 2V/div. 5V/div. 10ms/div. ANODE CONNECTION 500us/div. IC301 IC301 PIN 93 PIN 89 2V/div. 1V/div. 200us/div. 10ms/div. IC301 PIN 96 100mV/div. 10ms/div. WF-S-EC4Q GR-05000 RE4QM/EXSY SVT-N72P (E)

  • Page 85: Board

    TM-1, TM-2 TM-1, TM-2 TM-1, TM-2 Board Display & Key Scan SVT-N72P (E)

  • Page 86: Board

    PW-1 PW-1 PW-1 Board Power Supply PW-1 SVT-N72P (E)
  • Page 87 J3214 C3135 C3038 Q3105 R3028 J3157 J3159 C3131 R3029 C3020 R3034 R3077 J3194 Q3103 C3039 J3226 D3005 J3158 J3250 J3219 J3227 C3021 J3255 BZ301 Q3106 D3103 Q3011 J3195 J3207 D3102 FFC CONTACT SIDE C3146 J3240 L3002 R3171 CN306 SVT-N72P (E)
  • Page 88 Q5142 C5111 J5111 D5105 R5011 D5013 C5108 L5001 R5103 R5114 J7202 Y5077 J7208 F5001 T2.5A H 250V R5101 IC511 J7207 CN512 CN511 Y5076 J5116 S7207 S7202 S7208 S7201 S7206 S7209 PLAY SEARCH PAUSE AD PLAY PWB,TM-2 1AC4B10F1400BA CMK-P2X SVT-N72P (E)
  • Page 90 Printed in Japan Sony Corporation SVT-N72P (CE) E 2002. 8 08 B&P Company 9-955-388-01 ©2002...

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