Daewoo VCR MECHANISM UNIT Service Manual
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Daewoo VCR MECHANISM UNIT Service Manual

Daewoo VCR MECHANISM UNIT Service Manual

Vcr mechanism unit (t-mecha deck)
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S/M No. : TMECHA
Service Manual
VCR MECHANISM UNIT
(T-MECHA DECK)
DAEWOO ELECTRONICS CO., LTD.
http : //svc.dwe.co.kr
Feb. 2000

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Summary of Contents for Daewoo VCR MECHANISM UNIT

  • Page 1 S/M No. : TMECHA Service Manual VCR MECHANISM UNIT (T-MECHA DECK) DAEWOO ELECTRONICS CO., LTD. http : //svc.dwe.co.kr Feb. 2000...

  • Page 2: Table Of Contents

    CONTENTS 1. ASSEMBLY DIAGRAM AND A/S ...2 2. WIRE DIAGRAM...5 3. PERIODIC MAINTENANCE AND SERVICE SCHEDULE ...6 4. SERVICE SCHEDULE FOR THE MAJOR PARTS ...7 5. JIGS AND TOOLS...8 6. DEASSEMBLY AND REPLACEMENT ...10 7. MECHANICAL ADJUSTMENT...16 8.ADJUSTMENT OF THE TAPE TRANSPORTING SECTION ...19 9.

  • Page 3: Assembly Diagram And A/S

    ASSEMBLY DIAGRAM AND A/S 1. Assembly diagram 1-1. DECK Assembly diagram A. Upper View 1 MAINBASE ASS’Y 2 DRUM ASS’Y 3 FE HEAD 4 S SLANT POLE ASS’Y 5 TENSION BAND ASS’Y 6 S BRAKE ASS’Y 7 S REEL TABLE 8 REEL BRKT TOTAL ASS’Y fig1-1 9 IDLER PLATE TOTAL ASS’Y...
  • Page 4 ASSEMBLY DIAGRAM AND A/S (CONTINUED) B. Lower View fig1-2 20 L LOADING ASS’Y 21 R LOADING ASS’Y 22 CONNECT PLATE 23 REEL BELT 24 LOADING RACK...
  • Page 5 ASSEMBLY DIAGRAM AND A/S (CONTINUED) 1-2. FRONT LOADING Assembly diagram 1 FL BRKT L 2 TOP PLATE 3 SAFETY LEVER 4 LOADING LEVER AS4 fig2 5 CST HOLDER AS 6 DOOR OPENER 7 SAFETY LEVER R 8 FL BRKT R...

  • Page 6: Wire Diagram

    WIRE DIAGRAM 1. Wire Diagram 2. Connector Pin Arrangement...

  • Page 7: Periodic Maintenance And Service Schedule

    PERIODIC MAINTENANCE AND SERVICE SCHEDULE 1. PERIODIC MAINTENANCE AND SERVICE SCHEDULE A. In order to effectively maintain the excellent performance and fully utilize the features of this apparatus, and to lengthen the life of the mechanism and tapes, we strongly urge you to perform periodic maintenance and inspection, as described below.

  • Page 8: Service Schedule For The Major Parts

    SERVICE SCHEDULE FOR THE MAJOR PARTS SERVICE SCHEDULE FOR THE MAJOR PARTS The following parts should receive periodic service, according to the recommended intervals. NAME DRUM TOTAL ASS'Y CAPSTAN MOTOR L/C BRKT TOTAL ASS'Y REEL BELT IDLER PLATE TOTAL ASS'Y REEL TABLE TENSION BAND ASS'Y S, T BRAKE ASS'Y...

  • Page 9: Jigs And Tools

    JIGS AND TOOLS 1. List of Jigs and Tools ITEMS ALIGNMENT TAPE CLEANING TAPE (DAEWOO) CASSETTE TAPE (KOKUSAI) VHS SPINDLE HEIGHT GAUGE TENTELO METER (TENTELO) FAN TYPE TENSION METER DENTAL MIRROR DRIVER ADJUSTMENT DR IVER MODEL NTSC: SP MONOSCOPE 7KHz...
  • Page 10 JIGS AND TOOLS(CONTINUED) 2. Sketch of Jigs and Tools & VHS SPINDLE HEIGHT GAUGE...

  • Page 11: Deassembly And Replacement

    DEASSEMBLY AND REPLACEMENT 1. Removal of the FRONT LOADING Ass’y (Fig. 3.1) NOTE: Remove the FRONT LOADING Ass’y in eject mode. a. Unscrew the 2 screw holding the F/L. b. Separate the F/L Ass’y from the MAINBASE settling down point by lifting the rear part of F/L (Screw Hole). Fig.
  • Page 12 DEASSEMBLY AND REPLACEMENT (CONTINUED) d. Separate the LOADING LEVER Ass’y by pressing the connection point from the CASSETTE HOLDER Ass’y. (Fig. 3.4) e. Remove the SAFETY SPRING connecting the SAFETY LEVER and CASSTTE HOLDER PLATE. (Fig. 3.4) f. Remove the RELEASE SPRING connecting the RELEASE LEVER and SAFETY LEVER.
  • Page 13 DEASSEMBLY AND REPLACEMENT (CONTINUED) 4. Deassembly of LOADING RACK, LOADING ASS’Y, S/T SLANT POLE ASS’Y (Fig. 3.7, 3.8) a. Turn out the DECK MECHANISM and remove the LOADING RACK@ after unscrewing the SCREW !. b. Disintegrate the R LOADING AS # and L LOADING AS $.
  • Page 14 DEASSEMBLY AND REPLACEMENT (CONTINUED) 6. Deassembly of the LC BRKT ASS’Y, PINCH LEVER TOTAL ASS’Y (Fig. 3.10) a. Separate the LC BRKT Ass’y @ after removing the 3 screw !. b. Separate the LC BRKT Ass’y @ from the DECK MECHANISM.
  • Page 15 DEASSEMBLY AND REPLACEMENT (CONTINUED) 8. Deassembly of the S/T BRAKE ASS’Y (Fig. 3.13) a. Unhook the S BRAKE SPRING # from the MAIN- BASE HOOK !. b. Remove the S BRAKE Ass’y @ from the mainbase. c. Remove the T BRAKE SPRING ^ from the MAIN- BASE HOOK $.
  • Page 16 DEASSEMBLY AND REPLACEMENT (CONTINUED) 12. Deassembly of the REEL TABLE, IDLER PLATE TOTAL ASS’Y (Fig. 3.16) a. Remove the POLY WASHER ! and separate the IDLER PLATE TOTAL Ass’y @ from the mainbase. b. Remove the REEL TABLE $ from the REEL TABLE POST # of the MAINBASE.

  • Page 17: Mechanical Adjustment

    MECHANICAL ADJUSTMENT 1. Mechanical Adjustment (Fig. 4.1~4.4) In case of deassembly and reassembly for fixing the mechan- ical problem, check the following check point. a. Make sure that the DATUM HOLE of the CAM GEAR is aligned with the DATUM HOLE in the MAINBASE in the EJECT mode as shown in Fig.
  • Page 18 MECHANICAL ADJUSTMENT (CONTINUED) d. Make sure that the triangular mark “A” of the L LOAD- ING Ass’y is aligned with the mark “b” of the R LOAD- ING Ass’y. (Fig. 4.4) e. Reference hole “C” of the LOADING RACK should be aligned with the reference hole of the R LOADING Ass’y to make the teeth of the LOADING RACK is aligned as shown in Fig.
  • Page 19 MECHANICAL ADJUSTMENT (CONTINUED) 3. Mechanical Mode (Operate without a cassette tape) a. Remove the FRONT LOADING Mechanism from the DECK Mechanism. b. Cap the IR LED and pull the FL RACK. This has the same effect with cassette loading to the deck. c.

  • Page 20: Adjustment Of The Tape Transporting Section

    ADJUSTMENT OF THE TPAE TRANSPORTING SECTION. Generally, tape transporting section has been precisely adjusted in the factory and does not require the ordinary readjustment. But there is the case that tape noise or impact on the deck mechanise, tape transporting section readjustment is required, in adjustment of the tape tranmission section consut the following flow chart.
  • Page 21 ADJUSTMENT OF THE TPAE TRANSPORTING SYSTEM Generally the TAPE TRANSPORTING SYSTEM has been precisely adjusted in the factory and does not ordinarily require readjustment. But when noise and tape damage take place and part assemblies that compose the TAPE TRANSPORTING SYSTEM are replaced, check and read- just the TAPE TRANSPORTING SYSTEM.

  • Page 22: Main Circuit Board

    ADJUSTMENT OF THE TPAE TRANSPORTING SECTION. (CONTINUED) A. Adjustment of the S/T GUIDE ROLLER a. Check the Playing back with a T-120 TAPE. b. Make sure that excessive tape wrinkle does not occure at eatch S.T GUIDE ROLLER. c. If tape wrinkle is observed at the S/T GUIDE ROLLER, turn the guide roller screw until there is not tape wrinkle.
  • Page 23 ADJUSTMENT OF THE TPAE TRANSPORTING SECTION. (CONTINUED) FIg.5.5 Adjustment of the X-POSITION F. PLAYBACK PHASE ADJUSTMENT(Fig. 5.6) S/W PULSE TEST PIN Test Point ENVELOPE TEST PIN Measurement Equipment OSILLOSCOPE Adjustment VR 595(PG SHIFTER) PHASE GENERATOR(PG) SHIFTER determine the VIDEO HEAD SWITCHING POINT when the TAPE is played back.
  • Page 24 ADJUSTMENT OF THE TPAE TRANSPORTING SECTION. (CONTINUED) H.Adjustment of the wave form of DRUM Entrance / Exit (Fig. 5.8) S/W PULSE TEST PIN Test Point ENVELOPE TEST PIN Measurement Equipment OSILLOSCOPE VR CONTROL Adjustment S/T GHIDE ROLLER a. Connect the PT01 on the MAIN CIRCUIT BOARD with a PATH ADJ.FIXTURE.

  • Page 25: Level Meter

    ADJUSTMENT OF THE TPAE TRANSPORTING SECTION. (CONTINUED) K.Adjustment of the AUDIO AZIMUTH Test Point AUDIO OUTPUT Measurement Equipment AUDIO LEVEL METER a. Connect the AUDIO output JACK with an AUDIO LEVEL METER. b. Play back the ALIGNMENT TAPE(DN-2:MONO- SCOPE 7KHz Signal). c.

  • Page 26: Exploded View And Partlist

    EXPLODED VIEW AND PARTS LIST 1. Exploded view of DECK Ass’y ( Top View) fig1-2 fig6-1...
  • Page 27 EXPLODED VIEW AND PARTS LIST (CONTINUED) 2. Exploded view of DECK Ass’y ( Bottom View) fig6-1 fig6-2...
  • Page 28 EXPLODED VIEW AND PARTS LIST (CONTINUED) 3. Exploded view of FL Ass’y fig6-3...
  • Page 29 EXPLODED VIEW AND PARTS LIST (CONTINUED) 4. Exploded view Drum Total Ass’y D0040 D0050 D0010 D0060 D0070 D0020 D0040 fig6-4...
  • Page 30 EXPLODED VIEW AND PARTS LIST (CONTINUED) 5. Parts List of Deck Total Ass’y (continud) PART S/N PART NAME NTSC M1OOO 97PCO273D- DECK TOTAL AS M1OOO 97PC0195D- DECK TOTAL AS M1OOO 97PC0194D- DECK TOTAL AS M1OOO 97PC0128D- DECK TOTAL AS M1OOO 97PC0301D- DECK TOTAL AS M1OOO 97PC0328D- DECK TOTAL AS...
  • Page 31 EXPLODED VIEW AND PARTS LIST (CONTINUED) Parts List of Deck Total Ass’y (continud) PART S/N DRUM AS D0010 D0030 97SA324400 D0030 97SA327100 D0040 7001260711 D0050 97SA320400 D0060 97S2303600 D0070 97S2303700 D0070 97S2303800 D0070 97S2303900 AD002 7051300611 DECK AS AM001 A0100 97SA318100 A0200 97SA316500...
  • Page 32 EXPLODED VIEW AND PARTS LIST (CONTINUED) Parts List of Deck Total Ass’y PART S/N DECK AS A1700 97S2709600 A1800 97S2708200 A1900 97SA317100 A2000 97SA318010 A2100 7274300611 A2200 97SA317300 A2300 97S3108200 A2400 97S2909400 A2500 97SA317200 A2600 97SA317400 A2700 97SA317500 A2800 97S8015000 A2800 97S8023100 A2900...
  • Page 33 EXPLODED VIEW AND PARTS LIST (CONTINUED) 6. Parts List of Drum Price Ass’y PART S/N NTSC AD001 97PA268901 AD001 97PA277471 AD001 97PA264841 AD001 97PA269001 AD001 97PA277571 AD001 97PA264941 AD001 97PA269101 AD001 97PA277671 AD001 97PA265041 AD001 97PA272071 AD001 97PA265871 AD001 97PA269901 AD001 97PA265971 AD001...
  • Page 34 DAEWOO ELECTRONICS CO., LTD 686, AHYEON-DONG MAPO-GU SEOUL, KOREA C.P.O. BOX 8003 SEOUL, KOREA TELEX : DWELEC K28177-8 CABLE : "DAEWOOELEC" E-mail : G7F00E@web.dwe.co.kr TEL : 82-2-360-7802 FAX : 82-2-360-7877...

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