Daewoo VCR MECHANISM UNIT manual

S/M No . : TMECHA Feb. 2000 D AE W OO ELECT R ONICS C O . , L T D . http : //svc.dwe .co .kr Service Manual VCR MECHANISM UNIT (T-MECHA DECK)[...]

1 CONTENTS 1. ASSEMBL Y DIAGRAM AND A/S ............................................................................................ 2 2. WIRE DIAGRAM ........................................................................................................................ 5 3. PERIODIC MAINTENANCE AND SERVICE SCHEDULE ...............................[...]

2 2 1. Assembly diagram 1-1. DECK Assembly diagram A. Upper V iew ASSEMBL Y DIAGRAM AND A/S 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 9 IDLER PLATE TOTAL ASS’Y 10 T BRAKE ASS’Y 11 FL RACK 12 RELAY LEVER 13 CAPSTAN MOTOR 14 LC BRKT ASS’Y [...]

3 ASSEMBL Y DIAGRAM AND A/S (CONTINUED) B. Lower V iew 20 L LOADING ASS’Y 21 R LOADING ASS’Y 22 CONNECT PLATE 23 REEL BELT 24 LOADING RACK fig1-2[...]

4 ASSEMBL Y 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 5 CST HOLDER AS 6 DOOR OPENER 7 SAFETY LEVER R 8 FL BRKT R fig2[...]

5 2. Connector Pin Arrangement 1. Wir e Diagram WIRE DIAGRAM[...]

6 1. PERIODIC MAINTENANCE AND SER VICE 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. * After repairing, do the maintenance described [...]

7 SER VICE SCHEDULE FOR THE MAJOR P AR TS SER VICE SCHEDULE FOR THE MAJOR P AR TS The following parts should receive periodic service, according to the recommended intervals. : Check and Replace if necessary. : Replace PERIODIC SER VICE (TIME) NAME 1000 2000 3000 4000 5000 DRUM TOT AL ASS'Y CAPST AN MOT OR L/C BRKT TOT AL ASS'Y REEL BEL T[...]

8 JIGS AND T OOLS 1. List of Jigs and T ools FIG. NO ITEMS MODEL N O REMARKS NTSC: SP MONOSCOPE 7KHz CHECKING OF THE 1 ALIGNMENT T APE SP COLORBAR 1KHz ! T APE TRANSPOR TING (EP MONOSCOPE) SYSTEM P AL/SCAM: SP MONOSCOPE 6KHz SP COLORBAR 1KHz (LP MONOSCOPE) 2 CLEANING T APE DHC-602V @ CHECKING OF THE T APE (DAEWOO) TRANSPOR TING SYSTEM 3 CASSETTE T [...]

9 JIGS AND T OOLS(CONTINUED) 2. Sketch of Jigs and T ools ALIGNMENT TAPE ! # % & CLEANING TAPE @ 30 20 10 0 10 20 30 30 20 10 0 10 20 30 VHS SPINDLE HEIGHT GAUGE $ ^ *[...]

10 1. Removal of the FRONT LOADING Ass’y (Fig. 3.1) 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). 2. Deassembly of FRONT LOADING Ass’y (FIg. 3.2~3.5) a. Remove the 1 washer for holding the door opener and separate F/L Assembly by moving the[...]

11 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. (Fig. 3.4) 3. Deassembly of DRUM Ass’y (Fig. 3.6) a. Turn ov[...]

12 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 $ . c. Disintegrate the S SLANT POLE AS % and T SLANT POLE AS ^ by moving those part in arrow direction. 5. Deassem[...]

13 6. Deassembly of the LC BRKT ASS’Y , PINCH LEVER TOT AL 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. c. Disintegrate the PINCH LEVER TOTAL Ass’y # . 7. Deassembly of the CAM GEAR, RELA Y LEVER, FL RACK (Fig. 3.10) a. Separate the CAM GEAR % fro[...]

14 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 $ . d. Remove the T BRAKE Ass’y % . 9. Deassembly of the TENSION BAND ASS’Y (Fig. 3.14) a. Unhook the TENSION SPRING @ from t[...]

15 12. Deassembly of the REEL T ABLE, IDLER PLA TE TOT AL 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. 13. Deassembly of the REEL BRKT TOT AL ASS’Y , CONNECT PLA TE (Fig. 3.17) a. Turn over the DECK MECHANISM a[...]

16 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. 4.1. b. Make sure that the ending part “A” of the RELAY LEVER ass[...]

17 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. 4.4. 2. Adjustment and [...]

18 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. If the S/T POLE BASE is loaded, Play mode starts auto- matically. If you want other function, press the corre- sponding button. [...]

19 ADJUSTMENT OF THE TP AE TRANSPOR TING 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 con[...]

20 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. Refer to the following FLOW CHART in order to adj[...]

21 ADJUSTMENT OF THE TP AE TRANSPOR TING 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. B. A[...]

22 F . PLA YBACK PHASE ADJUSTMENT(Fig. 5.6) PHASE GENERATOR(PG) SHIFTER determine the VIDEO HEAD SWITCHING POINT when the TAPE is played back. If an adjustment of the PHASE GENERATOR(PG) SHIFTER is not doneprecisely, There can be a HEAD SWITCHING NOISE or a VERTICAL JITTER problem, vibration of the picture on the screen, not good quality of picture[...]

23 H. Adjustment of the wave form of DRUM Entrance / Exit (Fig. 5.8) a. Connect the PT01 on the MAIN CIRCUIT BOARD with a PATH ADJ.FIXTURE. b. Play back an ALIGNMENT TAPE(DN-2 : MONO- SCOPE signal) c. Connect the S/W PULSE TEST PIN on the PATH ADJ. FIXTURE with a CHANNEL-1 SCOPE PROBE. d. Connect the VIDEO OUT on the MAIN CIRCUIT BOARD with a CHANN[...]

24 K. Adjustment of the AUDIO AZIMUTH a. Connect the AUDIO output JACK with an AUDIO LEVEL METER. b. Play back the ALIGNMENT TAPE(DN-2:MONO- SCOPE 7KHz Signal). c. Check if the AUDIO output signal level is over : -9 ~- 3dBm. d. If the requirement of “c” is not satisfied, readjust the AZIMUTH SCREW of the AC HEAD until the AUDIO output is maxize[...]

25 1. Exploded view of DECK Ass’y ( T op V iew) EXPLODED VIEW AND P AR TS LIST fig1-2 fig6-1[...]

26 2. Exploded view of DECK Ass’y ( Bottom V iew) EXPLODED VIEW AND P AR TS LIST (CONTINUED) fig6-1 fig6-2[...]

27 3. Exploded view of FL Ass’y EXPLODED VIEW AND P AR TS LIST (CONTINUED) fig6-3[...]

28 D0040 D0020 D0050 D0010 D0060 D0070 D0040 fig6-4 EXPLODED VIEW AND P AR TS LIST (CONTINUED) 4. Exploded view Drum T otal Ass’y[...]

29 LOC PART S/N PART NAME PART DISCRIPTION NTSC M1OOO 97PCO273D- DECK TOTAL AS DRN-8329-CAR(2HD SP/EP HI-FI,DLC) M1OOO 97PC0195D- DECK TOTAL AS DRN-8230(2HD SP/EP MONO,DLC) M1OOO 97PC0194D- DECK TOTAL AS DRN-8430(4HD MONO, DLC) M1OOO 97PC0128D- DECK TOTAL AS DRN-8630(4HD HI-FI, DLC) M1OOO 97PC0301D- DECK TOTAL AS DRN-8200(2HD SP/EP MONO,NON) M1OOO [...]

30 EXPLODED VIEW AND P AR TS LIST (CONTINUED) Parts List of Deck T otal Ass’y (continud) LOC PART S/N PART NAME PART DISCRIPTION DRUM AS D0010 DRUM AS REFERRING TO LIST OF DRUM PRICE ASS’Y D0030 97SA324400 DRUM M/T AS E20XL-25 D0030 97SA327100 DRUM M/T AS DMVDMTO4M D0040 7001260711 SCREW MACHINE PAN 2.6X7 MFZN D0050 97SA320400 EARTH GROUND AS T[...]

31 EXPLODED VIEW AND P AR TS LIST (CONTINUED) Parts List of Deck T otal Ass’y LOC PART S/N PART NAME PART DISCRIPTION DECK AS A1700 97S2709600 RACK FL PBT(DY4410GF) NATURAL A1800 97S2708200 GEAR CAM DERLIN 100 A1900 97SA317100 PINCH LEVER TOT AS T-MECHA A2000 97SA318010 LC BRKT AS T-MECHA A2100 7274300611 SCREW TAPPTITE TT3 RND 3X6 MFZN A2200 97S[...]

32 6. Parts List of Drum Price Ass’y LOC PART S/N PART NAME PART DISCRIPTION NTSC AD001 97PA268901 DRUM PRICE AS CYN-T210(2HD SP/EP NON) AD001 97PA277471 DRUM PRICE AS CYN-T212(2HD SP/EP DLC) AD001 97PA264841 DRUM PRICE AS CYN-T213(2HD SP/EP BLK) AD001 97PA269001 DRUM PRICE AS CYN-T410(4HD MONO NON) AD001 97PA277571 DRUM PRICE AS CYN-T412(4HD MON[...]

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[...]