Daewoo Electronics VCR MECHANISM UNIT User's Manual
Contents
1. NO NAME NO NAME 8 SLANT POLE 2 TENSION POLE 9 GUIDE ROLLER 2 5 GUIDE POS 10 ACE HEAD 4 FE HEAD 11 GUIDE POSI S GUIDE 12 PINCH ROLLER 6 5 SLANT POLE 15 CAPSTAN SHAFT DRUM 14 TREE FIg 5 1 A schematic diagram of the tape transporting section If any components shown in Fig 5 1 tape transporting section will be changed To readjust the change of tape transporting sec tion keep in mind and follow the following check points 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 Refer to the following FLOW CHART in order to adjust the TAPE TRANSPORTING SYSTEM S T GUIDE ROLLER HEIGHT DRUM TOTAL ASS Y ADJUSTMENT E POST FLANGE A C HEAD ASS Y APOS i PINCHLEVER TOTAL i ASSY A C HEAD AS ADJUSTMENT TILT ADJUSTMENT U AUDIO AZIMUTH ADJUSTMENT j A C HEAD ADJUSTMENT X POSITION ADJUSTMENT2. FIg 5 8 Fine adjustment of the ENVELOPE at the DRUM ENTRANCE EXIT I REVIEW PLAY Fig 5 9 Test Point S WPULSETESTPIN PATH ADJ FIXTURE est Poini ENVELOPE TESTPIN PATH ADJ HXTURE Measurement Equipment OSILLOSCOPE VR CONTROL PATH ADJ FIXTURE Adjustment S T GHIDE ROLLER TAPETRANSMISSON SECTION a Connect the PTO1 on the MAIN CIRCUIT BOARD with a PATH ADJ FIXTURE b Play back an ALIGNMENT TAPE DN2 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 23 BOARD with a CHANNEL 2 SCOPE PROBE 1V div Make the VR CONTROL on the PATH ADJ FIXTURE to the center to maximize the ENVELOPE signal Play back the REVIEW MODE about 15 secong and alter the mode to PLAY MODE Check whether the EN VELOPE waveform restore to its original form within 3 second when the REVIEW mode is changed to PLAY mode If the requirement of is not satisfied Check the run ning status of tape on the lower part of T GUIDE POST and adjust the S T GUIDE ROLLER precisely ENVELOPE WAVEFOR SCREEN OUI REVIEW PLAY REVIEW PLAY
3. FIg 5 9 Waveform change when the mode altered REVIEW PLAY J Checking for the J AUDIO output waveform Adjustment of AC HEAD TILT amp Height Test Point AUDIO OUTPUT AUDIO OUTPUT JACK Measurement Equipment AUDIO LEVEL METER Connect the AUDIO output jack with an AUDIO LEVEL METER Playback an Alignment Tape DN 1 Color Bar 1KHz Signal Check if the AUDIO output signal level is over 9 3dBm If the requirement of is not satisfied readjust the AC HEAD TILT and the HEIGHT until the AUDIO output is maximized Fig 5 2 5 3 ADJUSTMENT OF THE TPAE TRANSPORTING SECTION CONTINUED K Adjustment of the AUDIO AZIMUTH Test Point AUDIO OUTPUT AUDIO OUTPUT JACK 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 Check if the AUDIO output signal level is over 9 3dBm d If the requirement of is not satisfied readjust the AZIMUTH SCREW of the AC HEAD until the AUDIO output is maxized Fig 5 4 e Repeat the Process of Adjustment of the wave form of DRUM Entrance Exit 24 L X POSITION Test Point S WPU
4. PLAYBACK PHASE ADJUSTMENT LINEARITY ADJUSTMENT S POLE BASE ASS Y T POLE BASE ASS Y i E ce DRUM ENTRANCE EXIT ENVELOPE FINE TUNING U REVIEW PLAY CHANGING OPERATION CHECK AUDIO OUTPUT CHECK A C HEAD TILT amp HEIGHT ADJUSTMENT AUDIO AZIMUTH ADJUSTMENT X POSITION ADJUSTMENT j TRACKING Table 1 ADJUSTMENT FLOW DIAGRAM OF THE TAPE TRANSPORTING SYSTEM 20 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 B Adjustment of the AC HEAD ASS Y TILT a Play back a T 120 TAPE and check the running status of lower side of GUIDE POST b If there is any problem Turn the AC HEAD TILT SCREW until the running status improved Fig 5 2 TAPE TURN AC HEAD TILT SCREW CCW X Ww TURN AC HEAD TILT SCREW X EZ WA FIg 5 2 Adjustment of the AC HEAD ASS Y C Adjustment of the AC HEAD Height Fig 5 3 a Play back T 120 TAPE b Make sure that the gap between the lower end of AC head is 0 25m c If the measurement of the gap is different from the refer ence value 0 25m turn the screw until
5. EXPLODED VIEW AND PARTS LIST CONTINUED 5 Parts List of Deck Total Ass y continud LOC PART S N PARTNAME PART DISCRIPTION NTSC 97PCO273D DECK TOTAL AS DRN 8329 CAROHD SP EP HI FLDLC MIOOO 97PC0195D DECK TOTAL AS DRN 82302HD SP EP MONO DLC MIOOO 97PC0194D DECK TOTAL AS DRN 84304HD MONO DLC 97PC0128D DECK TOTAL AS DRN 86304HD HI FI DLC MIOOO 97PC0301D DECK TOTAL AS DRN 82002HD SP EP MONO NON MIOOO 97PC0328D DECK TOTAL AS DRN 82012HD SP EP MONO NON HEAD CLNER MIOOO 97PC0352D DECK TOTAL AS DRN 82202HD SP EP MONO DLC MIOOO 97PC0300D DECK TOTAL AS DRN 84004HD MONO NON MIOOO 97PC0329D DECK TOTAL AS DRN 8401 4HD MONO NON HEAD CLNER MIOOO 97PC0353D DECK TOTAL AS DRN 84204HD MONO DLC MIOOO 97PC0361D DECK TOTAL AS DRN 8421 4HD MONO DLC HEAD CLNER MIOOO 97PC0299D DECK TOTAL AS DRN 86004HD HLFLNON MIOOO 97PC0330D DECK TOTAL AS DRN 86014HD HI F NON HEAD MIOOO 97PC0354D DECK TOTAL AS DRN 8620 4HD HI FI DLC MIOOO 97PC0360D DECK TOTAL AS DRN 8621 4HD HI FI DLC HEAD MIOOO 97PC0365D DECKTOTALAS DRN 8230 HOHD SP EP MONO DLC MIOOO 97PC0364D DECKTOTALAS DRN 8430 H 4HD MONO DLC MIOOO 97PC0359D DECK TOTAL AS DRN 8630 H 4HD HI FLDLC PAL MIOOO 97PC0363D DECK TOTAL AS DRP8421 4HD MONO DLC HEAD CLNER 97PC
6. 3 10 Deassembly of the LC BRACKET ASS Y from the PINCH LEVER TOTAL ASS Y 13 DEASSEMBLY AND REPLACEMENT CONTINUED 8 Deassembly of the S T BRAKE ASS Y Fig 3 13 11 Deassembly of the FE HEAD Fig 3 14 a Unhook the S BRAKE SPRING 3 from the MAIN a Unscrew the screw 6 and separate the FE HEAD 7 BASE HOOK O from the MAINBASE b Remove the 5 BRAKE Ass y 2 from the mainbase c Remove the T BRAKE SPRING from the MAIN BASE HOOK 2 d Remove the T BRAKE Ass y 5 3 14 Deassembly of the TENSION BAND ASS Y CAPSTAN MOTOR and the FE HEAD 3 13 Deassembly of the S T BRAKE ASS Y 9 Deassembly of the TENSION BAND ASS Y Fig 3 14 a Unhook the TENSION SPRING 2 from the MAIN BASE HOOK O b Unhook the MAINBASE HOOK and remove the TENSION BAND Ass y 3 from the mainbase CAUTION After the assembly of TENSION BAND Ass y on the mainbase adjust the TENSION POLE location as shown in Fig 3 15 Avoid getting Grease Oil or Foreign substance on the FELT of the BAND BRAKE Take care not to deform the MAINBASE HOOK A when separating the TENSION BAND Ass y 10 Deassembly of the Capstan Motor Fig 3 14 a Separate the CAPSTAN MOTOR 5 after the removal of 3 screw holding the capstan motor FIg 3 15 Adjustment of the TENSION POLE POSITION 14 DEASSEMBLY A
7. c Separate the FL LIFT SPRING by twisting and dragging from FL BRKT R Fig 3 3 F L BRKT L SN lt 2 LIFT SPRING Fig 3 3 Deassembly of the FL BRKT Ass y 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 Fig 3 4 Fig 3 4 Deassembly of the CASSETTE HOLDER Ass y CAUTION Assemble the FRONT LOADING Ass y in the reverse step of deassembly Confirm that 2 bosses on the left side of the CASSETTE HOLDER Ass y are inserted in the groove on the left side of the top plate Insert 2 bosses on the right side of the CASSETTE HOLDER Ass y into the groove of the F L BRACKET R Fig 3 5 FL BRKT L INSERT e x r J VO Q Fig 3 5 Assembly of the FL Ass y dl Lema Es 11 3 Deassembly of DRUM Ass y Fig 3 6 a Turn over the DECK MECHANISM and holding the DRUM TOTAL Ass y 2 with hands remove the 3 screw holding the drum total assembly with mainbase b Separate the DRUM TOTAL Ass y from the deck paying attention there is no damage on the surface of VIDEO HEAD and DRUM c Assembly step is the rev
8. closely to the right side until the maximum ENVE is obtained e The adjustment of the X POSITION finished check if the AUDIO LEVEL is degraded then readjustment of the AUDIO AZIMUTH is required Test Point S W PULSE TEST PIN PATH ADJ FIXTURE est Poin ENVELOPE TEST PIN PATH ADJ FIXTURE Measurement Equipment OSILLOSCOPE VR CONTROL PATH ADJ FIXTURE Adjustment AC HEAD ADJUST HOLE ADJUSTMENT BAR ADJUSTMENT OF THE TPAE TRANSPORTING SECTION CONTINUED TRACKING CCW RACKING CENTER TRACKING CW FIg 5 5 Adjustment of the X POSITION F PLAYBACK PHASE ADJUSTMENT Fig 5 6 Test Point S W PULSE TEST PIN MAIN CIRCUTE BOARD ENVELOPE TEST PIN MAIN CIRCUTE BOARD Measurement Equipment OSILLOSCOPE Adjustment 595 PG SHIFTER MAIN CIRCUTE BOARD 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 pic
9. picture and may lead to damage of the tape After cleaning with alcohol allow the parts to dry thoroughly before using a cassette tape b Cleaning of Driving section REEL TABLE CAPSTAN FLYWHEEL PULLEY REEL PULLEY B LUBRICATION S REEL POST e T REEL TABLE POST REEL GEAR POST After cleaning these parts with alcohol lubricate these with one or two drops of oil SERVICE SCHEDULE FOR THE MAJOR PARTS SERVICE SCHEDULE FOR THE MAJOR PARTS The following parts should receive periodic service according to the recommended intervals PERIODIC SERVICE TIME NAME 1000 2000 3000 4000 5000 DRUM TOTAL ASSY d 9 9 CAPSTAN MOTOR 9 9 L C BRKT TOTAL ASS Y 9 9 REEL BELT 9 9 IDLER PLATE TOTAL ASS Y 9 9 REEL TABLE 9 TENSION BAND ASS Y 9 9 9 S T BRAKE ASSY 9 9 PINCH ROLLER ASS Y 7 AC HEAD ASSY 9 FE HEAD REEL GEAR TOTAL ASS Y Check and Replace if necessary Replace Note Even though the unit is not used frequently cleaning lubrication and replacement of the belt should be under taken every 2 years JIGS AND TOOLS 1 List of Jigs and Tools NO ITEMS MODEL e REMARKS NTSC SP MONOSCOPE 7KHz CHECKING OF THE 1 ALIGNMENT TAPE SP COLORBAR IKHz O TAPE TRANSPORTING EP MONOSCOPE SYSTEM PAL SCAM SP MONOSCOPE 6KHz SP COLORBAR IKHz LP MONOSCOPE CLEANING TAPE CHECKING OF THE TAPE 2
10. the desired gap is obtained C APE m FIg 5 3 Adjustment of X POSITION 21 D Adjustment of the AUDIO AZIMUTH Fig 5 4 a Play back the ALIGNMENT TAPE DN2 SP NTSC 7KHz b Check the AUDIO output with a AUDIO LEVEL METER c Turn the AC HEAD AZIMUTH SCREW 2 until the maximum AUDIO output 9dBm 3dBm is obtained X POSITION ADJUSTMENT ECT 5 4 HEIGHT REFERENCE SCREW AZIMUTH SCREW TILT SCREW X POSITION ADJUST MAINBASE ADJUST REFERENCE HOLE ADJUST FIX SCREW 6 QOL ROWNO FIg 5 4 Adjustment of AUDIO AZIMUTH X POSITION E Adjustment of the X POSITION Fig 5 4 5 5 a Connect the PATH ADJ FIXTURE to the PTO1 on the MAIN CIRCUIT BOARD b Play back theALIGNMENT TAPE DN2 SP MONOSCOPE c Connect the S W pin and ENVE pin of the PATH ADJ FIXTURE with the SCOPE PROBE d Insert the adjustment bar in the AC HEAD ADJUST hole and adjust the X POSITION of the AC HEAD ASS Y until the ENVE is maximum when the VR is on the CEN TER Three is the possibility that an another TRACKING CEN can be occur when the AC HEAD ASS Y turned completely in the counterclockwise direction Hence adjust the X position with AC HEAD ASS Y adhering
11. 0362D DECK TOTAL AS DRP8621 4HD HI FI DLC HEAD SECOM 29 EXPLODED VIEW AND PARTS LIST CONTINUED Parts List of Deck Total 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 975 324400 DRUM M T AS E20XL 25 D0030 975 327100 DRUM M T AS DMVDMTO4M D0040 7001260711 SCREW MACHINE PAN 2 6X7 MFZN D0050 975 320400 EARTH GROUND AS T DRUM D0060 9752303600 HOLDER MAIN POM KEPITAL F20 D0070 9752303700 HOLDER CAP A POMQCH D0070 9752303800 HOLDER CAP B D0070 9752303900 HOLDER CAP C POM 6CH AD002 7051300611 SCREW MACHINE PAN 3X6 SW MFZN DECK AS 001 DECK AS REFERRING TOLISTOFDECK TOTALASS Y A0100 97SA318100 MAIN BASE AS T MECHA A0200 97SA316500 S SLANT POLE AS T MECHA A0300 97SA316600 SLANT POLE AS T MECHA A0400 9758101600 DMVCMCO7DR A0400 9758101600 NEW SANVIC 0500 9783102000 SCREW TAPPTITE TT2 BIN P 2 6X7 MFZN A0600 975 320500 AC HEAD AS 1000 A0600 975 326800 AC HEAD AS HVMXAI101A A0700 7051300611 SCREW MACHINE PAN 3X6 SW MFZN 0800 975 316800 L LOADING 5 T MECHA A0900 97SA316900 R LOADING AS T MECHA A1000 9752709500 RACK LOADING SECC T1 2 A1100 7008301911 SCREW MACHINE WAS M3 19 MFZN A1200 9750904300 PLATE CO
12. DAEWOO TRANSPORTING SYSTEM CASSETTE TAPE KT 300NV MEASUREMENT OF KOKUSAD KT 300RV REEL TORQUE VHS SPINDLE MEASUREMENT OF A HEIGHT GAUGE TEA REEL HEIGHT TENTELO METER MEASUREMENT OF TENTELO RUR THE BACK TENSION FAN TYPE MEASUREMENT OF THE 6 TENSION METER BELOW 3KG PRESSING FORCE FOR THE PINCH ROLLER CHECKING OF THE TAPE DENT MIRROR TRANSPORTING SYSTEM 8 DRIVER 1 ASSEMBLY DISASSEMBLY ADJUSTMENT DR IVER 2 AND ADJUSTMENT JIGS AND TOOLS CONTINUED 2 Sketch of Jigs and Tools 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 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 I washer for holding the door opener and separate F L Assembly by moving the DOOR OPENER in the direction of arrow Remove the 2 screw holding the TOP PLATE and sepa rate the CASSETTE HOLDER Ass y by moving the FL BRKT L and FL BRKT R in the direction of arrow Fig 3 2 Fig 3 1 Removal of the FRONT LOADING Ass y 10 TOP PLATE DOOR OPENER WASHER F LBRK R Fig 3 2 Deassembly of the FRONT LOADING Ass y
13. Fig 4 4 LOADING RACK Confirm the Alignment before the assembly of RACK LOADING ELOADING R LOADING ASS Y 4 4 Assembly reference between the LOADING RACK and the LOADING LEVER ASS Y 17 2 Adjustment and measurement of the BACK TENSION Fig 4 5 4 6 a Check that the location of the TENSION POLE is in the right position If not adjust that by refering to the 4 Adjustment of the position of the TENSION POLE b Playback the T 120 Tape in S MAX for 20 seconds Generally tape transporting section is settled down in 20 seconds c Measure the BACK TENSION by using the TENTELO METER Refer to Fig 4 5 The result should be within the range of 20g 30g d Ifthe BACK TENSION is out of the range change the position of the TENSION SPRING of repeat the process of 4 Adjustment of the position of the TENSION POLE Fig 4 6 CAUTION If the measurement result greater than the upper limit change the hook point of the spring to the A Confirm that all of the three probes of TENSION meter are in contact with the tape During measuring don t touch any other parts of the MECHANISM i e MAINBASE It is recommended that this measurement be repeated at least three times for an accurate reading FIg 4 5 Measurement of the BACK TENSION tape Remove the FRONT LOADING Mechanism from the DECK Mechanism Cap the IR LED and pull the FL RACK
14. HD SP LP NON ADOO1 97PA266071 DRUM PRICE AS CYP KT412 4HD MONO DLC ADOO1 97PA270101 DRUM PRICE AS CYP KT410 4HD MONO NON ADOO1 97PA272771 DRUM PRICE AS CYP KT612 4HD HI FI DLC ADOO1 97PA272601 DRUM PRICE AS CYP KT610 4HD HI FI NON SECAM ADOO1 97PA266171 DRUM PRICE AS CYS KT412 4HD MONO DLC ADOO1 97PA270201 DRUM PRICE AS CYS KT410 4HD MONO NON ADOO1 97PA272971 DRUM PRICE AS CYS KT612 4HD HI FI DLC ADOO1 97PA272801 DRUM PRICE AS CYS KT610 4HD HI FI NON DAEWOO DAEWOO ELECTRONICS CO LTD 686 AHYEON DONG MAPO GU SEOUL KOREA C P 0 BOX 8003 SEOUL KOREA TELEX DWELEC K28177 8 CABLE DAEWOOELEC E mail G7F 00E web dwe co kr TEL 82 2 360 7802 FAX 822 360 7877
15. HER POLY D3 6XD8XT0 5 A3700 97SA415400 CST HOLDER SUB AS T MECHA A3800 9753008900 SPRING SAFETY 5175304 WPB DO 5 A3900 97526210600 LEVER SAFETY L SECC T1 0 A4000 9782621700 LEVER SAFETY R SECC T1 0 A4100 9753009000 SPRING RELEASE LVR 505304 WPB D0 25 4200 9782621800 LEVER RELEASE POM F20 03 NATURAL A4300 97SA317800 F L LEVER AS T MECHA AN002 2291131304 GREASE DELUXE 5221G NAM YOUNG HEAD CLEANER 5 A4400 975 326900 HEAD CLEANER 5 T MECHA 3l EXPLODED VIEW AND PARTS LIST CONTINUED 6 Parts List of Drum Price Ass y LOC PART S N PART NAME PART DISCRIPTION NTSC ADOO1 97PA268901 DRUM PRICE AS CYN T210 2HD SP EP NON ADOO1 97PA277471 DRUM PRICE AS CYN T212 2HD SP EP DLC ADOO1 97PA264841 DRUM PRICE AS CYN T213 2HD SP EP BLK ADOO1 97PA269001 DRUM PRICE AS CYN T410 4HD MONO NON ADOO1 97PA277571 DRUM PRICE AS CYN T412 4HD MONO DLC ADOO1 97PA264941 DRUM PRICE AS CYN T413 4HD MONO BLK ADOO1 97PA269101 DRUM PRICE AS CYN T610 4HD HI FI NON ADOO1 97PA277671 DRUM PRICE AS CYN T612 4HD HI FI DLC ADOO1 97PA265041 DRUM PRICE AS CYN T613 4HD HI FI BLK ADOO1 97PA272071 DRUM PRICE AS CYN T312 4HD HI FI NON PAL ADOO1 97PA265871 DRUM PRICE AS CYP KT112 2HD SP ONLY DLC ADOO1 97PA269901 DRUM PRICE AS CYP KT110 2HD SP ONLY NON ADOO1 97PA265971 DRUM PRICE AS CYP KT212 2HD SP LP DLC ADOO1 97PA270001 DRUM PRICE AS CYP KT210 2
16. LSETESTPIN PATH ADJ FIXTURE est Poini ENVELOPE TEST PIN PATH ADJ FIXTURE Measurement Equipment OSILLOSCOPE VR CONTROL PATH ADJ FIXTURE Adjustment S T GHIDE ROLLER TAPETRANSMISSON SECTION Connect the 01 on the MAIN CIRCUIT BOARD with a PATH ADJ FIXTURE Play back an ALIGNMENT TAPE DN 2 MONO SCOPE Signal Connect theS W PULSE TEST PIN on the PATH ADJ FIXTURE with a CHANNEL 1 SCOPE PROBE Connect the VIDEO OUT on the MAIN CIRCUIT BOARD with a CHANNEL 2 SCOPE PROBE 1 V div Check if the ENVELOPE is maximum when the VR CONTROL on the PATH ADJ FIXTURE is in CEN TER If the requirement is not satisfied readjust the X POSITION by referring to subitem E Adjustment of the X POSITION Repeat the process of subite F PLAYBACK PHASE ADJUSTMENT EXPLODED VIEW AND PARTS LIST 1 Exploded view of DECK Ass y Top View A2100 A4400 A2000 KZ lt 4 A0200 A0300 fig6 1 25 EXPLODED VIEW AND PARTS LIST CONTINUED 2 Exploded view of DECK Ass y Bottom View A0100 fig6 2 26 EXPLODED VIEW AND PARTS LIST CONTINUED 3 Exploded view of FL Ass y EXPLODED VIEW AND PARTS LIST CONTINUED 4 Exploded view Drum Total Ass y D0040 79 D0020 D0050 i D0010 D0060 D0070
17. ND REPLACEMENT CONTINUED 12 Deassembly of the REEL TABLE IDLER PLATE TOTAL ASS Y Fig 3 16 a Remove the POLY WASHER Q and separate the IDLER PLATE TOTAL Ass y 2 from the mainbase b Remove the REEL TABLE 2 from the REEL TABLE POST of the MAINBASE CAUTION Take care not to deform the IDLER PLATE TOTAL Ass y 2 when assembling and deassembling FIg 3 16 Deassembly of the REEL TABLE and the IDLER PLATE TOTAL 557 15 13 Deassembly of the REEL BRKT TOTAL ASS Y CONNECT PLATE Fig 3 17 a Turn over the DECK MECHANISM and remove the 2 screw 1 b Remove the REEL BRKT TOTAL Ass y 2 from the MAINBASE Separate the CONNECT PLATE 9 from the MAIN BASE by pushing to the direction of the arrow e CAUTION n deassembly of the REEL BRKT TOTAL Ass y take care REEL BELT and REEL FELT not to be stained with Grease Oil or Foreign substance Deassembly of the IDLER Ass y should be precede the deassembly of the REEL BRKT TOTAL Ass y Check the operation of the REEL BRKT TOTAL Ass y before assembly e Check the operation of PLA Y CUE and REVIEW work well and existence of noise during the mode operation Fig 3 17 Deassembly of the REEL BRKT TOTAL 4557 and the CONNECT PLATE MECHANICAL ADJUSTMENT 1 Mechanical Adjustment Fig 4 1 4 4 In case of deassembly and reassembly for fixing the mechan ical problem check th
18. NNECT SECC 70 8 A1300 97SA319400 REELBRKT TOTAL AS T MECHA 1400 7274300611 SCREW TAPPTITE TT3 RND 3X6 MFZN A1500 9755500400 BELT REEL CR68 1600 9752623200 LEVER RELAY SECC T1 2 30 EXPLODED VIEW AND PARTS LIST CONTINUED Parts List of Deck Total Ass y LOC PART S N PART NAME PART DISCRIPTION DECK AS A1700 9752709600 RACK FL PBT DY4410GF NATURAL A1800 9752708200 DERLIN 100 A1900 97SA317100 PINCH LEVER TOTAS A2000 97SA318010 LC BRKT AS T MECHA A2100 7274300611 SCREW TAPPTITE TT3 RND 3X6 MFZN A2200 975 317300 IDLER PLATE TOT AS T MECHA A2300 9753108200 POLYWASHER D2 6XD6 0XT0 5 A2400 9752909400 TABLE REEL POM F20 03 BLACK A2500 97SA317200 TENSIONLVR TOT AS T MECHA A2600 97SA317400 S BRAKE AS T MECHA A2700 97SA317500 T BRAKE AS T MECHA A2800 9758015000 HEAD FE HVFHU0030AK A2800 9758023100 HEAD FE MH 131DT A2900 7274300811 SCREW TAPPTITE TT3 RND 3X8 MFZN AS AF001 97SA261010 F LOADING AS T MECHA AF002 7274300611 SCREW TAPPTITE TT3 RND 3X6 MFZN A3000 9780903910 PLATE TOP SECC T1 0 A3100 9782401400 BRKTFLL SECC T1 0 A3200 9752401500 SECC T1 0 A3300 727430061 1 SCREW TAPPTITE TT3 RND 3X6 MFZN A3400 9753008800 SPRING FL LIFT SWPB DO 8 A3500 9752622700 LEVER DOOR OPENER POM F20 03 BLACK A3600 9783117300 WAS
19. S M No Service Manual VCR MECHANISM UNIT T MECHA DECK DAEWOO ELECTRONICS CO LTD http svc dwe co kr Feb 2000 CONTENTS 1 ASSEMBLY DIAGRAM AND A S una a a naa a 2 2 WIRE DIAGRAN EE 5 3 PERIODIC MAINTENANCE AND SERVICE SCHEDULE 22 rines nir ide 6 4 SERVICE SCHEDULE FOR THE MAJ OR PARTS 2022042200 s pan anna ayaqa nn 7 SJIGSAND TOO f 8 6 DEASSEMBLY AND REPLACEMENT N Rau S a 10 T MECHANICAL Al USTHENE u asahan daria 16 8 AD USTMENT OF THE TAPE TRANSPORTING SECTION 19 9 EXPLODED VIEW AND PARTLIST a a sania h Naa ecd ntt 25 ASSEMBLY DIAGRAM AND A S 1 Assembly diagram 1 1 DECK Assembly diagram Upper View fig1 1 nun R w N MAINBASE 55 DRUM 557 FEHEAD S SLANT POLE 557 TENSION BAND ASS Y S BRAKE 557 S REEL TABLE REEL BRKT TOTAL ASS Y 9 IDLER PLATE TOTAL ASS Y 10 T BRAKE ASS Y 11 FLRACK 12 RELAY LEVER 13 CAPSTAN MOTOR 14 LC BRKT 557 15 PINCH LEVER TOTAL 557 16 CAM GEAR 17 AC HEAD ASS Y 18 T SLANT POLE ASS Y 19 HEAD CLEANER ASSEMBLY DIAGRAM AND A S CONTINUED B Lower View figl 2 20 L LOADING ASS Y 21 R LOADING ASS Y 22 CONNECT PLATE 23 REEL BELT 24 LOADING RACK ASSEMBLY DIAGRAM AND A S CONTINUED 1 2 FRONT LOADING Assembly diagra
20. This has the same effect with cassette loading to the deck If the S T POLE BASE is loaded Play mode starts auto matically If you want other function press the corre sponding button Turn off the poser when the Mechanism is in the desired position Adjustment of the position of the TENSION POLE Fig 4 6 Place the Mechanical mode in the play mode Refer to the above section 3 Mechanical mode Confirm that the TENSION LEVER is aligned with the datum hole of the MAINBASE If the requirement b is not satisfied turn the BAND BRAKE ADJUST CAP clockwise or counterclockwise until the two datum holes alignes with each other MECHANICAL ADJUSTMENT CONTINUED 3 Mechanical Mode Operate without a cassette 18 4 6 Adjustment of the TENSION POLE CY gt gt LI 22 00 ZH ZE gt i o per l UO Lo LJ ES Ll RZE Rd DD d Oc Cc w ea ESI O z o lt m 4 8 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
21. e 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 of the RELAY LEVER assembled on the CONNECT PLATE is aligned with the reference hole of the MAINBASE as shown in Fig 4 2 c The end point A of PINCH SPRINGPING of the LEVER TOTAL Ass y should be located within the tra jectory of the CAM GEAR Fig 4 3 MAINBASE CAMGEAR O o FIg 4 1 Assembly reference between the FL RACK and the CAM GEAR 16 O O C 2 O Ke 5 ow o LA iui ga S z PE 45 S 1 Fig 4 2 Assembly reference between the RELAY LEVER and the CAM GEAR 4 3 Assembly reference of the PINCH LEVER TOTAL ASS Ywith the CAM GEAR MECHANICAL ADJUSTMENT CONTINUED d Make sure that the triangular mark 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
22. erse way of deassembly CAUTION After the assembly of the DRUM TOTAL Ass y check out if DECK Mechanism operate smoothly and adjust ment of tape transmission section is OK Fig 3 6 Assembly of the DRUM TOTAL Ass y 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 after unscrewing the SCREW O b Disintegrate the R LOADING AS 9 and L LOADING AS c Disintegrate the S SLANT POLE AS 5 and T SLANT POLE AS by moving those part in arrow direction CAUTION Take care GUIDE ROLLER of S T SLANT POLE AS and SLANT POLE not to be stained with grease during assembly Refer to Fig 3 8 in assembly 3 7 Deassembly of the LOADING RACK LOADING ASS Y and the SLANT POLE ASS Y Confirm the Alignment before the assembly of RACK LOADING 3 8 Assembly of the L R LOADING AS and the LOADING RACK 5 Deassembly of the A C HEAD ASS Y Fig 3 9 a Remove the CONNECTOR 2 from the AC HEAD Ass y watch out that there is no damage in the HEAD connecting PIN b Separate the AC HEAD Ass y after unscrewing the screw 3 CAUTION After the assembly adjust the tape transmission section by refering to the chapter 5 After the adjustment of the tape transmission section paint the 3 adjustment sc
23. ig 5 7 Nd FIg 5 7 Adjustment of Linearity ADJUSTMENT OF THE TPAE TRANSPORTING SECTION CONTINUED H Adjustment of the wave form of DRUM Entrance Exit Fig 5 8 Test Point S WPULSE TESTPIN PATH ADJ FIXTURE est Poini ENVELOPE TEST PIN PATH ADJ FIXTURE Measurement Equipment OSILLOSCOPE VR CONTROL PATH ADJ FIXTURE Adjustment S T GHIDE ROLLER TAPETRANSMISSON SECTION a Connect the PTO1 on the MAIN CIRCUIT BOARD with a PATH ADJ FIXTURE b Play back an ALIGNMENT TAPE DN2 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 CHANNEL 2 SCOPE PROBE 1V div e Turn the VR CONTROL on the PATH ADJ FIXTURE clockwise or counterclockwise until the signal shape of ENVELOPE has the constant thickness Fig 5 8 f Adjust the S T GUIDE ROLLER if the thickness of the ENVELOPE signal is not uniform DRU
24. m fig2 1 FLBRKTL 5 CSTHOLDER AS 2 TOPPLATE 6 DOOR OPENER 3 SAFETY LEVER 7 SAFETY LEVERR 4 LOADINGLEVER AS4 8 FLBRKTR WIRE DIAGRAM 1 Wire Diagram DRUM AS C MOTO ACE HEAD MODE SWITCH FE HEAD R Ce er CN 2 END SENSOR CAPSTAN MOTOR START SENSOR MAIN PCB BOGU MAIN PCB LED MAIN PCB 452 REEL SENSOR REEL SENSOR MAIN PCB MAIN PCB Ed EF SWITCH DETECTOR MAIN PCB APPLIED TO ONLY RECORD MODEL 2 Connector Pin Arrangement CN A CN B CN C CN 1 CN 2 m 1 AFM L 1 FE HEAD 1 AE HEAD 1 GND 1 GND 2 2 GND 2 2 D PWM 2 GND 3 AFM R 3 CND 3 D Vcc 3 4 SP L 4 CTL 4 D FG 4 C PWM LS SP COMM 5 A HEAD PB 5 D PG 5 Vcc 6 SP R 6 LM 6 C FG 7 GND 7 AHEAD REC y C F R 8 EP R 8 MC 8 EVER 5V 4HEAD g EP COMM MONO 10 EP L 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 mai
25. ntenance and inspection as described below After repairing do the maintenance described below irrespec tive of the length of time in use B Cleaning of the Head Drum Assy Cleanthe Drum assembly with a cleaning cloth soaked in liquid cleaner alcohol by placing lightly against the Drum and slowly revolving the rotating HEAD DRUM Assy by hand Do not rotate the upper Drum by applying electric power to the motor when cleaning Donotmove the cleaning cloth in the vertical direction against the heat tip C Cleaning the tape transporting section Clean the tape transporting parts with a cleaning cloth soaked in alcohol D Cleaning of driving section Clean the driving section with a cloth soaked in alcohol E Routine inspection Perform maintenance and inspection as separately described depending on the period of time in use Referto the table of 2 2 3 2 CLEANING AND LUBRICATION A Cleaning of Tape Transporting section and Driving section a Cleaning of Tape Transporting section Thefollowing parts should be cleaned after every 500 hours of use TENSION POLE ACHEAD AE HEAD VIDEO HEAD DRUM FEHEAD CAPSTAN SHAFT TGUIDE ROLLER VERTICAL POST Asthe above parts contact with the video tape they tend to collect dust particles If they are stained with dust or foreign SSLANT POLE S GUIDE POST T GUIDE POST TSLANT POLE SGUIDE ROLLER PINCH ROLLER substance it has a bad effect on the
26. rew with locking paint 3 9 Deassembly of the AC HEAD ASS Y 12 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 2 after removing the 3 screw 1 b Separate the LC BRKT Ass y 2 from the DECK MECHANISM c Disintegrate the PINCH LEVER TOTAL Ass y 9 CAUTION After the assembly of the PINCH LEVER TOTAL adjust the tape transmission section by refering to the chapter 5 There should be no pollution on the surface of PINCH ROLLER 2 with grease or other foreign material Make sure if the end of the PINCH SPRING PINCH A is located at the end of trajectory of CAM GEAR B in assembly Refer to Fig 4 3 wey 1 M S 7 Deassembly of the CAM GEAR RELAY LEVER FL RACK Fig 3 10 Fig 3 11 Assembly of the CAM GEAR RELAY LEVER a Separate the CAM GEAR 5 from the MAINBASE b Separate the RELAY LEVER from the MAINBASE c Separate the FL RACK 7 from MAINBASE by moving to the arrow direction CAUTION When reassembling refer to Fig 3 11 Fig 3 12 and chapter 4 Align to the Mark O O O O OB Am mw Fig 3 12 Assembly of the CAM GEAR FL RACK
27. ture in special play back a Connect the on the MAIN CIRCUIT BOARD with a PATH ADJ FIXTURE b Play back an ALIGNMENT TAPE DN 2 MON 5 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 CHANNEL 2 SCOPE PROBE 1V div e Control thePG VOLUME until the time interval between the SWITCHING PULSE and the V SYNC SIGNAL is sithin the 6 5 0 5H as shown in fig 5 6 6 I 5 H 0 5H Fig 5 6 22 G Adjustment of the LINEARITY Fig 5 7 Test Point S W PULSETEST PIN PATH ADJ FIXTURE ENVELOPE TESTPIN PATH ADJ HXTURE Measurement Equipment OSILLOSCOPE VR CONTROL PATH ADJ FIXTURE Adjustment S T GHIDE ROLLER TAPETRANSMISSON SECTION a Connect the 01 on the MAIN CIRCUIT BOARD with a PATH ADJ FIXTURE b Play back an ALIGNMENT TAPE DN2 MONOSCOPE Signal c Connect the FIXTURE S W PULSE TEST PIN on the PATH ADJ CHANNEL 1 SCOPE PROBE d Connect the VIDEO OUT on the MAIN CIRCUIT BOARD with a CHANNEL 2 SCOPE PROBE 1V div e Adjust the VR CONTROL on the ADJ FIXTURE until the ENVELOPE signal is maximum while play back the ALIGNMENET TAPE f Adjust the S T GUIDE ROLLER until the envelope signal waveforms of the entrance and exit sides are as shown in F
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