DV MECHANICAL ADJUSTMENT MANUAL V

Transcription

1 DV MECHANICAL ADJUSTMENT MANUAL V Ver R MECHANISM Plese use this mnul with the service mnul. For detils on printed circuit bords digrm, schemtic digrm, nd electric prts list regrding this mechnism deck, refer to the service mnul for the unit mounting the R mechnism. MECHANISM DECK

2 . PARTS REPLACEMENT AND PREPARATION FOR ADJUSTMENT -. ASSEMBLY/DISASSEMBLY OF CASSETTE COMPARTMENT 4 -. HOW TO LOAD/UNLOAD 4-3. Service Jigs nd Tools 5-4. About Mode Selector II OUTLINE 6. Mnul test 6. Step test 6 3. Auto test MECHANISM CONDITION (POSITION)SHIFTING ORDER LIST MODE SELECTOR II CONNECTION 6. PERIODIC CHECK -. CLEANING OF ROTARY DRUM ASSEMBLY 7 -. CLEANING OF TAPE PATH SYSTEM 7-3. PERIODIC CHECKS 7 3. PARTS REPLACEMENT 3-. TAPE GUIDE /8 AND GUIDE GUARD TAPE GUIDE / CAPSTAN COVER REEL MOTOR FL MOTOR ASSEMBLY, GEAR A, GEAR B AND GEAR CD ASSEMBLY GL ARM S ASSEMBLY, GL ARM T ASSEMBLY, COASTER S ASSEMBLY AND COASTER T ASSEMBLY MIC BASE GUIDE, MIC BASE ASSEMBLY AND MIC BASE SPRING 3-8. DRUM CAP, DRUM ASSEMBLY AND TAPE SUPPORT 3-9. PINCH ARM ASSEMBLY 3-0. CAPSTAN MOTOR 3-. PENDULUM RETAINER AND PENDULUM ARM ASSEMBLY 3-. BRAKE ARM S, RATCHET BRAKE T, TENSION COIL SPRING (BRAKE), SBR SLIDER AND FP-48 FLEXIBLE BOARD (CONDENSATION SENSOR) REEL TABLE ASSEMBLY, IDLER GEAR A ASSEMBLY AND IDLER GEAR B REEL BASE RETAINER, REEL BASE T ASSEMBLY AND REEL BASE S ASSEMBLY (REEL LOCK RELEASE BLOCK AND REEL LOCK RELEASE SPRING) CAM MOTOR, MOTOR HOLDER TG/7 ARM BLOCK, TG/7 BAND BLOCK AND TENSION COIL SPRING (TG)/(TG7) SUB-SLIDER ARM, SUB-SLIDER, ENCODER GEAR, MAIN CAM GEAR, COUPLING GEAR, SUB-CAM GEAR, PINCH SLIDER AND LOADING ARM ASSY MAIN SLIDER, MAIN SLIDER ARM AND PENDULUM STOPPER ASSEMBLY MD-76 BOARD AND ENCODER RETAINER COMPONENTS OF GL ARM S/T ASSEMBLY (GL ARM ASSEMBLY, GL HELICAL TORSION SPRING, GL GEAR) COMPONENTS OF MIC BASE ASSEMBLY (FP-04 FLEXIBLE BOARD, MIC BASE) COMPONENTS OF DRUM ASSEMBLY (MOTOR FPC ASSEMBLY, ELASTIC CONNECTOR) 3-3. COMPONENTS OF PINCH ARM ASSEMBLY (TAPE RETAINER, COMPRESSION COIL SPRING) 3-4. COMPONENTS OF TG/7 ARM ASSEMBLY (ET MAGNET, MAGNET HOLDER) TABLE OF CONTENTS 4. CHECK AND ADJUSTMENT 4-. REEL TABLE HEIGHT CHECK AND ADJUSTMENT 3. Preprtion before check 3. Check nd djustment TG/8 HEIGHT CHECK AND ADJUSTMENT 3. Preprtion before check 3. Check nd djustment TG/7 HEIGHT CHECK AND ADJUSTMENT 4. Preprtion before check 4. Check nd djustment FWD/RVS POSITION CHECK AND ADJUSTMENT 4. Preprtion before check 4. Check nd djustment ELECTRIC TENSION REGULATOR CHECK AND ADJUSTMENT OF TG/7 ARM 5. Preprtion before check 5. Check nd djustment FWD/RVS BACK TENSION CHECK AND ADJUSTMENT 6. Preprtion before check 6. Check nd djustment PREPARATION FOR ADJUSTMENT AND TAPE PATH CHECK TRACK ADJUSTMENT AND CHECK (Checking the RF Wveform) TRACK CHECK CUE/REV CHECK CURL CHECK AND ADJUSTMENT RISING CHECK 9 5. REPAIR PARTS LIST 5-. EXPLODED VIEWS DRUM SECTION GEAR, ARM SECTION MOTOR, MD-76 BOARD SECTION CASSETTE COMPARTMENT BLOCK ASSEMBLY ELECTRICAL PARTS LIST PRINTED WIRING BOARD AND SCHEMATIC DIAGRAM MD-76 (MODE SENSOR) PRINTED WIRING BOARD 35 MD-76 (MODE SENSOR) SCHEMATIC DIAGRAM 37

3 INFORMATION START Cssette comprtment (Drwing numbers: 7, 85) Pge 4 Pge 8 Guide gurd (Drwing numbers: 75) Pge 9 Cpstn cover (Drwing numbers: 89) Reel motor (Drwing numbers: M904) Pge 9 Pge 9 FL motor block (Drwing numbers: M905, 853 to 856) Find the replcement prts in Section 5, Repir prts list (exploded views) nd ttch or remove the prts in the following order. When replcing nd re-ttching the prts, djustments re sometimes required. Follow the instructions of ech item. GL rm S/T block (Drwing numbers: 80 to 87) MIC bse guide (Drwing numbers: 70) Pge 0 Pge Pge 0 Coster S/T Block (Drwing numbers: 80 to 80) Pge 0 MIC bse ssembly (Drwing numbers: 70, 703, 73, 74, CN004, S004) Note: Drwing numbers in ech box of the chrt refer to the numbers ssigned to ech prt in the exploded views of Section 5, Repir prts list. Drum cp (Drwing numbers: 7) Pge Drum ssembly (Drwing numbers: M90) Pge Pge Tpe support (Drwing numbers: 77) Pinch rm ssembly (Drwing numbers: 78 to 70) Pge Cpstn cover (Drwing numbers: 89) Pge 9 Pge Cpstn motor (Drwing numbers: M903) Pendulum retiner (Drwing numbers: 705) Pge Pge Pendulum rm ssembly (Drwing numbers: 706) Pge 3 Pge 3 Pge 3 Brke rm S/Rtchet brke T (Drwing numbers: 707, 708, 709) SBR slider (Drwing numbers: 757) FP-48 flexible bord (condenstion sensor) (Drwing numbers: 8) Idler ger A/B (Drwing numbers: 75, 75) Pge 3 Pge 3 Reel tble S/T (Drwing numbers: 753) Reel bse retiner (Drwing numbers: 89) Pge 4 Pge 4 Reel bse S/T block (Drwing numbers: 8, 83, 87, 88) Pge 4 Cm motor (Drwing numbers: M90) Pge 4 Motor holder block (Drwing numbers: 763, 764, M90) Pge Pendulum retiner (Drwing numbers: 705) TG rm/tg bnd block (Drwing numbers: 766, 768, 77 to 775) TG7 rm/tg7 bnd block (Drwing numbers: 767, 769, 770, 775) Pge 5 Pge 6 Pge 5 Sub-slider rm (Drwing numbers: 76) Sub-slider (Drwing numbers: 758) Min cm ger (Drwing numbers: 755) Pge 6 Pge 6 Encoder ger (Drwing numbers: 754) Pge 6 Pge 6 Coupling ger (Drwing numbers: 76) Pge 8 Tpe guide (Drwing numbers: 70 to 74) Pge 6 Sub-cm ger (Drwing numbers: 756) Pge 6 Pinch slider (Drwing numbers: 760) Pge 8 Tpe guide 8 (Drwing numbers: 70 to 74) Pge 8 Tpe guide (Drwing numbers: 776 to 780) Pge 3 Brke rm S (Drwing numbers: 708) Pge 6 Loding drive lever (Drwing numbers: 759) Pge 8 Tpe guide 7 (Drwing numbers: 776 to 78) Min slider (Drwing numbers: 80) Pge 8 Pge 8 Pge 9 Pge 9 Min slider rm (Drwing numbers: 803) Encoder cover (Drwing numbers: 88) MD-76 bord (Drwing numbers: 84, etc.) Pge 8 Pendulum stopper ssembly (Drwing numbers: 805) Note: When removing the MD-76 bord, ll the prts in the shded boxes ( ) of the chrt need to be removed. 3

4 . PARTS REPLACEMENT AND PREPARATION FOR ADJUSTMENT -. ASSEMBLY/DISASSEMBLY OF CASSETTE COMPARTMENT For detils on disssembling the mechnism deck (R mechnism), refer to the Service Mnul of the min unit in which the R mechnism is mounted. Before ttching or removing the cssette comprtment, check the position of L cssette. Cssette comprtment Screw (Remove in the direction of rrow A.) Tightening torque of cssette comprtment ± 0.096N m (3.5 ± 0. kg cm) Screw Positioning pin SL shifter SL shifter Bent portion C Bent portion C of the reel selector slider should be securely hooked on the bent portion of the SL shifter. Positioning pin A B Bent portion C When selecting cssette position, be creful not to touch the slider drive shft becuse it cn be esily bent or broken. Do not touch the slider drive shft. Reel select slider When ttching the cssette comprtment, move the reel selector slider in the direction of rrow Bto check the position of L cssette. Select the desired cssette position by pressing the clw position. -. HOW TO LOAD/UNLOAD [Using the regulted power supply] Note: Mke sure to remove the connector of the cm motor from the bord of the min unit nd pply +5V current. [Mnul: No cm motor] Note: Remove the cm motor from the motor holder while referring to Informtion on pge 3. Cm motor White Rotte the coupling ger by hnd to lod or unlod. [Rer side of chssis] Gry Apply current from the inlets of the connector. Coupling ger Unloding Loding Loding : Apply positive polrity (+) of power supply to the gry wire nd negtive polrity () of power supply to the white wire. Unloding : Apply negtive polrity () of power supply to the gry wire nd positive polrity (+) of power supply to the white wire. 4

5 -3. Service Jigs nd Tools J-: Clening fluid ( ) J-: Wiping cloth ( ) J-3: Super fine pplictor (mde by NIPPON APPLICATOR (P75D)) (J A) J-4: Mirror (Smll ovl type) (J A) J-5: Screwdriver for tpe pth (J A) J-6: Trcking tpe (XH-) (NTSC/PAL) ( ) J-7: Mini DV torque cssette (J A) J-8: Adjustment remote commnder (RM-95 upgrded)(note) (J B) J-9: Mode Selector (J B) J-0:FLOIL Grese (SG-94) ( ) J- Cssette refernce plte (J A) J-:Reel reference plte (J A) J-3:TG/7 preset plte (J B) J-4:Rely bord for tension regultor djustment (J A) J-5:Mode selector conversion bord (R) (J A) J-6:Mode Selector (Note) (J E) ROM J-7:Bord for tension regurtor djustment (J A) Note: If the micro processor IC in the djustment remote commnder is not the new micro processor (UPD7503G-C56-), the pges cnnot be switched. In this cse, replce with the new micro processor ( ). Note : ROM for version upgrding to llow use of the mode selector II with the R mechnism. 5

6 -4. About Mode Selector II About Mode Selector II 4-. OUTLINE This unit is mechnism drive tool which supplements the mintennce of ech mechnism deck. Its functions re described below.. Mnul test A mode which drives the motor only while the switch is ON. It enbles the opertor to control the motor s desired.. Step test A mode which drives the motor until the current condition detected by the sensor chnges to nother condition. It enbles the movements mde by the motor in ech opertion to be controlled while being detected. 3. Auto test A mode tht checks if the mechnism opertes normlly ccording to the condition shift tble recorded in the unit for ech mechnism deck. All the conditions of the decks re checked through series of opertions. An error messge is displyed nd opertions re stopped if incorrect shifts nd conditions re detected. 4-. MECHANISM CONDITION (POSITION) SHIFTING ORDER LIST After selecting the mechnism deck, select one of the two test modes other thn the uto test, nd press the RVS or FF button to specify the mechnism stte (position). Code A B MD nme C 0 0 D R mechnism ULE DEW LE REW FF STOP FWD / RVS 4-3. MODE SELECTOR II CONNECTION R mechnism Connector from the cm motor Alligtor clip CN Mode selector II Connector (white) 6P Rely bords Mode selector conversion bord (R) Bttery of NP-55, 77, etc. (power supply) Connector (blck) 6P 6

7 . PERIODIC CHECK Crry out the following mintennce nd periodic checks not only to fully disply the functions nd performnce of the set, but lso for the equipment nd tpe. After replcing, service the set s follows, regrdless of the length of use. -. CLEANING OF ROTARY DRUM ASSEMBLY. Press wiping cloth (J-) moistened with clening fluid (J-) ginst the rotry drum ssembly gently, nd clen it while rotting the rotry drum ssembly slowly with your finger in the counterclockwise direction. Note: Do not rotte the motor on power or rotte the rotry drum ssembly in the clockwise direction with your finger. The hed tip will lso be dmged if the wiping cloth is moved perpendiculrly ginst it. Therefore, be sure to follow the bove instructions when clening the rotry drum ssembly. -. CLEANING OF TAPE PATH SYSTEM. Clen the tpe pth systems (TG to TG8 nd cpstn) nd the lower drum using super fine pplictor (J-3) moistened with clening fluid. Note: Mke sure tht no oil or grese of the link mechnisms sticks to the super file pplictor (J-3). Note: Do not use pplictor moistened with lcohol to the other guide clening. But clen the pinch roller using lcohol. TG 3 TG 4 TG 5 TG 6 Pinch roller Cpstn Clening cloth Rotry drum ssembly TG TG TG 8 TG 7-3. PERIODIC CHECKS Loction of Mintennce nd Check Hours of Use (H) Remrks Clening of tpe pth surfce Be creful of the oil. Clening nd degussing of rotry drum ssembly Be creful of the oil. Driving System Cpstn (Bering) Ger Cm motor (worm block) Mke sure tht no oil gets on the tpe pth surfce. X (M90) Abnorml noise Performnce Bck tension mesurement Confirmtion Brke system FWD/RVS torque mesurement : Clening : Appling grese : Confirmtion Note: When overhuling, refer to the checks bove nd replce prts. Note: Gresing Alwys use the specified grese. If the viscosity differs, vrious problems my occur. (Use SG-94 for ll prts of the R mechnism.) Check the quntity of grese when instlling the prts which is needed to pply the grese. When replcing these prts, mke sure to pply the specified mount of grese. FOIL (SG-94): Prt No

8 3. PARTS REPLACEMENT Precution For detils on disssembling the cbinets, bords nd other prts, refer to Disssembly of the Service Mnul of ech model. For detils on replcing prts (disssembly, ssembly) of the mechnism deck, refer to Informtion on pge TAPE GUIDE /8 AND GUIDE GUARD Disssembly/Assembly When the tpe guide /8 is replced or ttched, perform ech djustment from Adjustment Strt - of the flowchrt on pge. To ttch or remove the tpe guide, use the screwdriver for the tpe pth (J-5). When ttching the TG rollers, check the upwrd nd downwrd directions nd ttch them to the chssis shft. TG roller Fce the side of the deepest hole downwrd nd insert the roller into the shft. The guide gurd is fixed t ech slit of the cssette positioning shft. To ttch the guide gurd, only insert it into the right nd left holes. To remove it, use pir of tweezers s shown in the figure below. Insert pir of tweezers into the clernce of the chssis to relese the lock of the slit. Guide gurd Cssette positioning shfts [TG side] (The components re the sme s on the TG8 side.) Be creful not to touch the tpe guide ( prt). [TG8 side] TG upper flnge TG roller TG sleeve TG ring Compression coil spring (TG) Lock of slit 3-. TAPE GUIDE /7 Disssembly/Assembly When the tpe guide /7 is replced or ttched, perform ech djustment from Adjustment Strt -3 of the flowchrt on pge. TG7 roller To ttch or remove the tpe guide, use the screwdriver for the tpe pth (J-5). When ttching the TG rollers, check the upwrd nd downwrd directions nd tht the TG roller to be ttched to the TG7 side is exclusively for the TG7 side. Then ttch the TG rollers to the chssis shft. Fce the side of the deepest hole downwrd nd insert the roller into the shft. The lower flnge of the TG7 roller is thicker thn those of the TG,, nd 8 rollers. [TG side] TG upper flnge [TG7 side] TG roller TG upper flnge TG7 roller (Note tht the shpe is TG sleeve different from tht of the other rollers.) TG ring Compression coil spring (TG) TG rm block TG sleeve TG ring Compression coil spring (TG) Be creful not to touch the tpe guide ( prt). TG7 rm block 8

9 3-3. CAPSTAN COVER Disssembly/Assembly 3-4. REEL MOTOR Disssembly/Assembly Screw Cpstn cover Tightening torque of cpstn cover ± N m (3.5 ± 0. kg cm) Clw Tightening torque of reel motor ± N m (0.7 ± 0. kg cm) Screw Screw Fsten the screws in order of,, 3. Screw 3 Do not fsten this screw. Reel motor Pss the two flexible bords of the drum ssembly through the hole. After inserting the flexible bord of the reel motor into CN3, ttch the reel motor nd lock CN3. CN 3 Insert the clw into the long hole of the chssis nd fix the cover with the screw FL MOTOR ASSEMBLY, GEAR A, GEAR B AND GEAR CD ASSEMBLY Disssembly/Assembly Positioning bosses FL motor ssembly Ger CD ssembly Remove the clws of the FL motor ssembly from hole A nd hole B nd remove the FL motor ssembly. Then, remove ech ger, etc. To ttch them, fter ttching the gers, etc. to the FL motor ssembly nd hook the positioning bosses of the FL motor block on holes C nd D then fit the two clws in ech hole A nd B. Ger A Ger B Hole D Hole C The worm gers re ttched inside the FL motor ssembly. When ttching the FL motor ssembly, pply grese there. Hole A Apply grese (hlf size of one grin of rice). Hole B 9

10 3-6. GL ARM S ASSEMBLY, GL ARM T ASSEMBLY, COASTER S ASSEMBLY AND COASTER T ASSEMBLY Disssembly: Remove the prts in order of,,3,4,5,6,7,8,9,0 For the disssembling nd ssembling procedures of the GL ger, GL helicl torsion spring, etc., refer to pge 0. Coter stop wsher GL rm T ssembly 5 Coster stopper 9 Stop wsher 4 6 Coter stop wsher Stop wsher 3 GL rm S ssembly Move the TG/7 rms to the loding position with the regulted power supply or by hnd while referring to pge 4. Ech coster ssembly must be in the unloding position. TG rm TG7 rm Unloding position 7 Coster stopper With considertion for future ssembly, check from the rer of the chssis tht the phse of the loding rm ssy is ligned. Coster T ssembly 0 8 Do not touch the tpe guide ( prt). The phse must be ligned with the hole of the chssis. Loding rm ssy Coster S ssembly Assembly Attch the coster S/T ssembly to the chssis with new coster stopper while being creful not to touch the tpe guide. Do the work while holding the drum side of ech coster. 3 Attch the GL rm S ssembly while checking the phse of ech prt. Fix the stop wshers t the correct position, using new stop wshers. Hole B Loding rm ssy Coster stoppers Hole A Hole C Coster T ssembly Coster S ssembly Hole D Attch the GL rm T ssembly. Fix the stop wshers in the correct position, using new stop wshers. Stop wsher (The stop hole is smller.) Coster stop wsher (The stop hole is lrger.) Stop wsher (The stop hole is smller.) GL rm T ssembly Check ech phse djustment while referring to the bove figure. Hole A of the GL ger T nd hole B of the GL ger S must fce ech other. Hole D of the loding rm ssy must be ligned with the hole of the chssis, nd the endmost ger tooth of the loding rm ssy must fce towrd hole C of the GL ger S. Coster stop wsher (The stop hole is lrger.) 0

11 3-7. MIC BASE GUIDE, MIC BASE ASSEMBLY AND MIC BASE SPRING Disssembly/Assembly Remove the six solders on the FP-04 flexible bord from For the disssembling nd ssembling procedures of the components the rer of the chssis. Pss the flexible bord through hole of the MIC bse ssembly, refer to pge 0. A nd pull it out of the front side of the chssis while being creful not to dmge it. To ttch the flexible bord, perform MIC bse guide the steps of disssembly in reverse order. MD-76 bord Clw FP-04 flexible bord (Remove the six solders.) Clw Stop wsher (Do not reuse.) MIC bse ssembly Six solders Temperture of tip of soldering iron : 350 ± 0 C Hold time : one second or shorter Hole A Move the reel selector slider in the direction of rrow B nd ttch the MIC bse ssembly t the position of S cssette. For the ssembly of the MIC bse spring, refer to the figure. B Hole A MIC bse spring Positioning pins Reel selector slider When selecting cssette position, be creful not to touch the slider drive shft becuse it cn be esily bent or broken. Do not touch the slider drive shft. Reel select slider Note: Do not hold the shft when selecting the reels. Insert the side of the shorter spring into the hole of the holder nd hook the side of the longer spring. When ttching the MIC bse guide, lock the positioning pins, clw C, nd clw D in this order. Route the flexible bord into the clernce of the MIC bse guide. Clernce MIC bse ssembly FP-04 flexible bord MIC bse guide Select the desired cssette position by pressing the clw position DRUM CAP, DRUM ASSEMBLY AND TAPE SUPPORT Disssembly: Remove them in order of,,3 For the disssembly nd ssembly procedures of the components of the drum ssembly, refer to pge. Drum ssembly 3 Flexible bord (0P) Drum cp Flexible bord (7P) Positioning pins Tpe support Clw D Pins Clw C Assembly: Attch the prts while referring to the disssembly procedure nd the figure below. (After ssembling, djust the tpe pth while referring to pge nd therefter.) Assembly nd disssembly of the drum ssembly When pulling the prt in the direction of the rrow, the clw is removed from the center shft, then the right pin nd the drum cp re removed s shown in the figure on the right. To ttch the drum ssembly, perform the disssembly steps in reverse order. Pins Pin Center shft Drum reference pins 4 Assembly nd disssembly of the drum ssembly Be creful tht the 7P flexible bord does not interfere with the prt. Be creful not to remove this together with the drum cp. Insertion hole of flexible bord (7P) Insertion hole of flexible bord (0P) Assembly nd disssembly of the tpe support 3 Drum fixing screw ssembly (Fsten the screws in order,, 3.) Tightening torque of drum ssembly ± N m (0.3 ± 0.05 kg cm) The clw is hooked on the sub-chssis. The clws re hooked under the sub-chssis. Positioning pin

12 3-9. PINCH ARM ASSEMBLY Disssembly/Assembly For the disssembling nd ssembling procedures of the tpe retiner nd compression coil spring (tpe retiner), refer to pge CAPSTAN MOTOR Disssembly/Assembly (After ssembling, djust the tpe pth from pge.) Roller B Roller A Cpstn motor Pinch rm ssembly Be creful not to touch the motor shft ( prt). Clw Push roller A into the groove s shown in the figure. Insert roller B into the clw. To remove the pinch rm ssembly, pull out the pinch rm upwrd while pushing the clw. Clw Roller B Roller A Screw Tightening torque of cpstn motor 0.96 ± N m (.0 ± 0. kg cm) 3-. PENDULUM RETAINER AND PENDULUM ARM ASSEMBLY Disssembly: Remove them in order of,,3 (To ttch them, perform the disssembly steps in reverse order.) Screw Tightening torque of pendulum retiner ± N m (3.5 ± 0. kg cm) Pendulum retiner (Remove in the direction of the rrow.) Notes during ssembly When ssembling or disssembling the pendulum rm ssembly, be creful of the following. [Rer side of pendulum retiner] Hole E Shft C D F Shft C 3 Pendulum rm ssembly Shft A Shft Insert tip D of the pendulum rm into hole E of the pendulum retiner nd insert the pendulum into shft C. Slide the pendulum rm in the direction of rrow F nd ttch it to the chssis. Attch the pendulum retiner to shft B. Be creful of the positions of the pendulum stopper t the rer of the chssis nd shft A of the pendulum rm. Shfts B Pendulum stopper Shft B Shft B Cn be removed. Shfts B Positioning boss Cnnot be removed. Shft A of the pendulum must be in this position.

13 3-. BRAKE ARM S, RATCHET BRAKE T, TENSION COIL SPRING (BRAKE), SBR SLIDER AND FP-48 FLEXIBLE BOARD (CONDENSATION SENSOR) Remove the SBR slider Disssembly: Remove them in order of,,3,4 while being creful not Portion C of the SBR slider (To ttch them, perform the disssembly steps in reverse order.) to touch the djuster. nd brke rm S must run close to ech other. FP-48 flexible bord (Condenstion sensor) SBR slider 3 4 Brke rm S Cnnot be removed. Cn be removed. The idler ger A ssembly must be engged with the ger teeth. C Tension coil spring (brke) Clen here with lcohol. Hole A Hole B Shft A Rtchet brke T Shft B Tension coil spring (brke) Insert shft Ainto hole A. Hook the hook of the spring on the brke side from underneth. Insert shft Binto hole B. When ttching the FP-48 flexible bord, scrpe the contct surfce with swb to stick the flexible bord to the chssis. Do not touch the sensor block (blck re). Two solders Temperture of tip of soldering iron: 350 ± 0 C Hold time: one second or shorter 3-3. REEL TABLE ASSEMBLY, IDLER GEAR A ASSEMBLY AND IDLER GEAR B Disssembly/Assembly (Do not touch the TG bnd block.) When the reel tble ssembly is replced or ttched, perform ech djustment from Adjustment Strt - of the flowchrt on pge. Checks before work The TG bnd winds round the slit of the reel tble ssembly. Before removing the reel tble ssembly, cler off the TG bnd while referring to the left figure. When ttching the TG bnd, be sure to use new stop wshers. IReel tble ssembly Idler gers B Reel tble ssembly Good Shft D or E Not good Idler ger A ssemblies When ttching the TG bnd, the prt lso must be inserted into shft D or E. Shft A Shft E When ttching ech ger, pply grese to ech fixing shft. Apply grese of hlf the size of one rice grin to the top side of shft C. When ttching the idler ger A ssembly, be creful not to pply grese to the reflection pnel. Shft C Shft C Shft D Shft B Shft A Shft B Shft A Apply grese to prt. (hlf size of one grin of rice) Cler off the stop wshers of the djuster side of the TG bnd in dvnce s shown in the figure. Shft B When ttching the idler ger A ssembly, be creful not to pply grese to the reflection pnel. 3

14 3-4. REEL BASE RETAINER, REEL BASE T ASSEMBLY AND REEL BASE S ASSEMBLY (REEL LOCK RELEASE BLOCK AND REEL LOCK RELEASE SPRING) Disssembly: Remove them in order of,,3 Assembly: Attch them in order of,,3 (Refer to Assembly, too.) Reel lock relese spring Stop wsher Reek lock relese block Reel bse S ssembly Reel bse retiner (Remove in reverse order of ssembly.) Reel bse T ssembly 3 Move the reel selector slider in the direction of rrow A to check tht the reel selector lever is L cssette. At this position, ttch the reel bse T ssembly. The ger teeth must be engged s shown in the figure. Reel bse T ssembly Good Not good Reel selector slider Move the reel selector slider in the direction of rrow B nd switch the reel selector lever to S cssette. At this position, ttch the reel bse S ssembly. The ger teeth (circled by ) must be engged s shown in the figure. A Reel selector lever Reel bse S ssembly B The ger teeth circled by re engged. This shft hinders removing or ttching the reel bse S ssembly. Do the work while being creful not to touch it. 3 Attch the reel bse retiner. Fixing stte Attch in order of,. (Attch to the slits.) 3-5. CAM MOTOR, MOTOR HOLDER Disssembly/Assembly Cm motor Apply grese to the three prts nd tip. (hlf size of one grin of rice for ech prt) 0 0 Note: Do not hold the shft when selecting the reels. Checks before disssembly nd ssembly The cm motor is fixed on the motor holder by the four clws. Relesing the four clws enbles the cm motor to be removed without removing the motor holder from the chssis. When ttching the cm motor, be creful of the ssembling direction (the lbel must fce towrd the front). If the phse of the ger, etc. moves when removing the motor holder, refer to pge 0. Lbel Clws A Motor holder (Relese clw B t the rer.) Clws C 0 Screw Clws A Clws A Clw C [Front side of motor holder] While spreding clws A in the direction of the rrow, pull out the cm motor upwrd. To ttch it, push the cm motor into the motor holder nd route the two wires of the cm motor into clw C. Screw Pins D Tightening torque of motor holder 0.96 ± N m (.0 ± 0. kg cm) Clw E Positioning holes of pin D Pins D Clws A [Rer side of motor holder] The motor holder is fixed by the two screws nd clw B t the rer. To remove it, push clw B in the direction of the rrow from the rer of the chssis. Note tht positioning pins D re esy to brek when ttching the motor holder. Apply grese (hlf size of one grin of rice) to the two prts shown in the right figure. When ttching the TG control rm, clw E must be inserted into the hole of the TG control rm. Pins D Clw B Pins D 4

15 3-6. TG/7 ARM BLOCK, TG/7 BAND BLOCK AND TENSION COIL SPRING (TG)/(TG7) Disssembly: Remove them in order of,,3,4 For the disssembling nd ssembling procedures of the ssembly components of the TG/TG7 rm, refer to pge. Stop wsher Compression coil spring (TG) Stop wsher Tension coil spring (TG) Shft A 3 Be creful not to touch the tpe guide ( prt) nd TG bnd block. Stop wsher TG rm ssembly Stop wsher Compression coil spring (TG) TG7 rm block Tension coil spring (TG7) Notes during work Be creful when hndling the TG rm nd the peripherl prts. Twisting nd bending of the bnd block nd tension coil spring Dirt nd scrtches of the tpe guide Loss of the compression coil spring (TG) Do not reuse removed stop wshers. Disssembly of the bnd TG/TG7 ssembly When pulling portion E of the TG or TG7 bnd in the direction of the rrow, click sound is herd s the bnd is removed. To ttch the bnds, pull out the opposite side to portion E to lock. Bnd TG/TG7 ssembly E Fig. Shft Shft C Fig. Shft D Shft B Assembly: Attch them while referring to figure bove or below nd the descriptions. When these prts re replced or ttched, perform ech djustment from Adjustment Strt -3 of the flowchrt on pge. Apply grese to the top side of the fixing shft (A or B) of the TG rm. (Fig. ) Hlf size of one grin of rice Hook ech spring on the second hook from bove Attch the TG bnd ssembly to the TG rm ssembly. (Fig. ) Be sure tht the felt sides of the TG bnd fce towrd the reel tbles so tht they surround the respective reel tbles. F G Sub-slider 3 Attch the tension coil spring to the TG rm ssembly. (Fig. 3, 4) Hook the spring of the tension coil spring (TG) from the inside nd put it under the TG bnd. (Fig. 3-F, 4) Hook the spring of the tension coil spring (TG7) from the outside nd put it under the TG7 bnd. (Fig. 3-G, 4) H C D 4 Attch the TG rm block to the shft (A or B) nd ttch the tension coil spring to the second hook. When ttching the TG rm, the prt must be t the left of portion H of the slider. (Fig. 3) Fig. 3 5 Attch the djuster of the TG bnd to shfts C nd D. [TG side] [TG7 side] Fixing shft C or D Good Not good Hook the spring from the inside nd put it under the TG bnd. Fig. 4 Hook the spring from the outside nd put it under the rm. This prt lso must be inserted into the shft. 6 Fix the TG bnd nd TG rm with new stop wshers. When ttching the TG rm, do not forget to ttch the compression coil spring (TG). (Fig. ) 5

16 3-7. SUB-SLIDER ARM, SUB-SLIDER, ENCODER GEAR, MAIN CAM GEAR, COUPLING GEAR, SUB-CAM GEAR, PINCH SLIDER AND LOADING ARM ASSY Disssembly: Remove them in order of,,3,4,5,6,7,8 Disssembly of the pinch slider Sub-slider rm Pinch slider 5 Move the pinch slider to the leftmost end, nd slide it upwrd nd remove it when two shfts A re superimposed on the holes of the pinch slider. 7 Encoder ger (A clw is hooked.) 8 Coupling ger Min cm ger Phse pin E 3 4 Sub-cm ger Phse pin D 6 Loding rm ssy Phse pin F Sub-slider Disssembly of the sub-slider Move the sub-slider to the rightmost nd remove it from two shfts B. This cn be removed. Fig. Fig. 3 This cnnot be removed. Disssembly of the encoder ger Shfts B Fig. Shfts A Fig. 4 Encoder ger Pull out the encoder ger upwrd while pushing into the clw. Assembly: Attch them while referring to the figure bove or below nd the descriptions. Check before work When ttching the prts described in this section, vrious phse djustments re required. Before work, refer to pge 8 nd check the reference phses. Phse djustment hole H Loding rm ssy Positioning hole G GL T ger Sub-cm ger [Rer side of chssis] Phse pin D Min slider rm Phse pin M Attch the loding rm ssy. (Refer to the figure bove.) The phses of the GLS ger nd GLT ger must mtch nd the positioning hole G of the loding rm ssy must be superimposed on the hole of the chssis. (Fig. 5) Attch the pinch slider. (Fig., ) 3 Apply grese to the groove t the rer of the sub-cm ger. (Fig. 6) After pplying, djust the phse of the sub-cm ger to tht of the pinch slider. (Fig. 7) Phse pin D of the loding rm ssy must be inserted into the groove t the rer of the sub-cm ger. (Fig. 5, 7) Sub-cm ger (rer side) Apply grese to the seven prts. (hlf size of one grin of rice for ech prt) GL S ger Min cm ger Fig. 6 Pinch slider Fig. 5 Sub-cm ger (front side) Fig. 7 Phse djustment hole H mtches the hole of the chssis. Check phse pin D through this hole 6

17 [Front side of chssis] 4 Apply grese to the fixing block (shft J nd U-shped groove K) of the coupling ger nd portion L of the sub-cm ger (hlf size of one grin of rice for ech prt). (Fig. 8) Shft J L Sub-cm ger 5 Attch the coupling ger. After ttching, pply grese while rotting the coupling ger by 0 ech time. (Fig. 9, 0) U-shped groove K Shft J Groove K Min cm ger mrks should fce ech other. Fig. 9 Attch the coupling ger to shft J nd U-shped groove K in order. Apply grese to the three prts (hlf size of one grin of rice for ech prt). mrks should fce ech other. Encoder ger Fig. 0 Not Fig. 8 Sub-cm ger goodmin cm ger Fig. Not good 6 Attch the min cm ger while being creful of the directions of the front nd rer sides. Also, tke cre of the phse djustment to the sub-cm ger. (Fig. 8,, ) Phse pin M of the min slider rm should be fitted in the groove of the min cm ger (rer side). (Fig. 5) Min cm ger (rer side) Min cm ger (front side) ( does not exist.) ( exists.) Fig. [Front side of chssis] 7 Attch the encoder ger. (Fig. 3) Adjust the phses (mrked) to those of the min cm ger. (Fig. 4/Fig. 8) Phse pin C should be fitted in the groove of the min cm ger (front side). 8 After moving the reel selector slider in the direction of rrow N to set the position of the reel bse to L cssette, ttch the sub-slider in reverse order while referring to Fig. 3. (Fig. 3) 9 Attch the sub-slider rm. (Fig. /Fig. 3) Sub-slider rm Sub-slider Do not hold the shft when selecting the reels. Reel bse S Reel bse T Phse pin F should be fitted in the long hole of the sub-slider rm. Fig. 3 (Position when L cssette is set) Reel selector slider (After ttching the sub-slider rm, return the reel bse to the originl position (L cssette).) 7

18 3-8. MAIN SLIDER, MAIN SLIDER ARM AND PENDULUM STOPPER ASSEMBLY Disssembly: Remove them in order of,,3 Min slider Disssembly of ech prt The min slider controls severl prts. Before removing the min slider, remove Brke rm S t the front of the chssis while referring to Informtion on pge 3. Otherwise, the min slider cnnot be removed. Pendulum stopper ssembly 3 Min slider rm Fixing shft of min slider rm Brke rm S Min slider The min slider is fixed by the two shfts nd the two bent portions t the rer of the chssis. The min slider cn be removed when it is moved to the rightmost end ( positions). Shfts Bent portions Fixing hole of min slider rm Bent portions Assembly: Attch them while referring to the figure bove or below nd the descriptions. Assembly of ech prt Attch ech prt while referring to the figure bove or below. When ttching the prts, djust the positions crefully while referring to the instructions in the figure below. Becuse these positioning will be used s reference when ssembling in future, mke sure to djust the positions nd phses correctly. [Rer side of chssis] Insert the min slider rm into the fixing hole nd ttch it to the fixing shft t the front of the chssis while referring to the figure bove. (To fcilitte ssembly, stick dhesive tpe so tht the min slider rm does not drop.) Perform ssembly so tht the min slider cn pss under the bent portion of the chssis. If Rtchet brke T remins, move down the Rtchet brke T s shown in the left figure nd ttch the min slider. 3 Crefully ttch the pendulum stopper ssembly so tht the two shfts fit in the two long holes of the min slider. Pendulum stopper ssembly 3 4 Min slider rm Min slider The shft of the rtchet brke T should be t the position where it cn be viewed fromthe outside s shown in the figure. 5 Min slider Move the min slider so tht the positioning holes re superimposed. 8 Pendulum stopper ssembly shfts 4 Attch the shft of the min slider rm to the long hole of the min slider. 5 Move the min slider to the leftmost end so tht the smll positioning hole of the min slider is superimposed on the smll positioning hole of the chssis, nd fix the min slider. The position where the min slider is fixed will be used s reference during ssembling nd phse djustment in future. (To void ffecting the min unit, fix the reel motor nd min slider with dhesive tpe, etc.)

19 3-9. MD-76 BOARD AND ENCODER RETAINER Disssembly: Remove them in order of,,3,4,5,6,7,8,9 Screw MD-76 bord 7 FP-04 flexible bord (Six prts re soldered.) 9 Screw Screw Screw 3 Screw 4 Encoder cover (A positioning clw is hooked.) tpe A Encoder disk (Positioning is required.) Encoder disk (Positioning is required.) Disssembly of MD-76 bord Peel off the FP-48 flexible bord t the front of the chssis (refer to pge 3). Remove the six solders on the FP-04 flexible bord from the rer of the chssis. Remove the screws in order of 3 to 8 shown in the figure. When removing the MD-76 bord from the chssis, be creful not to let the sensors touch the chssis. Note: When the tpe A is removed, use the new tpe A for replcement. (See the illustrtion below.) FP-48 flexible bord Positioning pin Peel off the flexible bord while being creful not to get the sensor block dirty or dmge the sensor block. Sensor block Positioning pin Assembly: Attch them in order of 9,8,3,4,5,6,7,, (Refer to the figure bove or below.) Assembly of MD-76 bord While being creful not to let the sensors touch the chssis, position the two positioning pins nd fsten the screws in Encoder cover order of to 5. Then, solder the six prts on the removed FP-04 flexible bord nd position the encoder disk. Finlly, stick the FP-48 flexible bord on the front of the chssis. (Refer to pge 3.) Screw 4 Fit this clw in the hole of nd fsten the screws. Screw (This screw fixes the encoder cover.) Positioning pin MD-76 bord Screw 3 Positioning the encoder disk Align the mrk of the disk with the v mrk printed on the bord s shown in the figure. (Be creful of the position of.) Positioning pin Screw 5 Solder the FP-04 flexible bord Screw (six prts). Temperture of tip of soldering iron: 350 ± 0 C Hold time: one second or shorter Tpe A (Adhere hlf of the tpe in the peripherl of the switches S nd S3 on the MD-76 bord nd dhere the remining hlf on the mechnism chssis.) Tightening torque of MD-76 bord ± N m (3.5 ± 0. kg cm) 9

20 3-0. COMPONENTS OF GL ARM S/T ASSEMBLY (GL ARM ASSEMBLY, GL HELICAL TORSION SPRING, GL GEAR) Disssembly nd distinguishing the S side from the T side GL ger T One phse djustment hole Assembly Attch ech GL helicl torsion spring to the GL ger. To distinguish the S side from the T side when the opening of the spring tip is fcing towrd the front, note tht the coil tip of the S side is locted on the left nd tht of the T side is locted on the right. Tip of coil Indented GL helicl torsion spring T [T side] [S side] Two phse djustment holes GL rm ssembly T GL ger S GL helicl torsion spring S GL rm ssembly S Fit the tip of the spring into the smll cut-out of the GL ger. Hook the tip of the spring on the bent portion of the GL rm ssembly nd push the bent portion of the GL rm into the lrge cut-out of the GL ger while rotting the GL ger in the direction of the rrow. Bent portions Push here. 3-. COMPONENTS OF MIC BASE ASSEMBLY (FP-04 FLEXIBLE BOARD, MIC BASE) Disssembly Remove the push switch from clw A of the MIC bse. Remove the screw nd connector (4P). Then, remove the flexible bord while being creful not to touch hook B. Assembly When the bent portion of the GL rm comes inside this rnge, push the bent portion into the ger. Insert pin D into the hole of the MIC bse. Insert the pin of the MIC bse into hole C. Connector (4P) Screw FP-04 flexible bord (Four prts re soldered.) Pin D Push switch (one key) Hole C Clw A Hook the flexible bord on hook B Attch the push switch (one key) to clw A. Hook B MIC bse Tightening torque of connector (4P) ± N m (0.4 ± 0. kg cm) 0

21 3-. COMPONENTS OF DRUM ASSEMBLY (MOTOR FPC ASSEMBLY, ELASTIC CONNECTOR) Disssembly/Assembly Connect the elstic connector to the drum ssembly nd ttch the motor FPC ssembly while ligning pin B with hole C of the drum ssembly. Fix the supporter plte with the screws while being creful of pin A of the motor FPC ssembly. Screws Tightening torque of motor FPC ssembly ± N m (0.3 ± 0.05 kg cm) Positioning pin A Supporter plte (This component is not supplied s n independent repir prt.) Positioning pin B Motor FPC ssembly Elstic connectors Hole C Drum ssembly Note: Be creful not to get these prts dirty when hndling them.also, do not touch the running side of the tpe COMPONENTS OF PINCH ARM ASSEMBLY (TAPE RETAINER, COMPRESSION COIL SPRING) Disssembly/Assembly 3-4. COMPONENTS OF TG/7 ARM ASSEMBLY (ET MAGNET, MAGNET HOLDER) Disssembly/Assembly TG7 rm ssembly Pinch rm ssembly Mgnet holder TG rm ssembly Compression coil spring (tpe retiner) Lock pin ET mgnet Clw A Clw B Pin C Tpe retiner Lock pin ET mgnet Mgnet holder Do not touch the tpe guide ( prt). Push pin C into this position. Remove the TG rm ssembly nd the TG7 rm ssembly in the direction of the rrow while pushing the lock pin of the mgnet holder from the rer of ech TG rm. To ttch them, insert the TG or TG7 rm ssembly in the direction opposite to the rrow while holding the ET mgnet with the mgnet holder, then hook the lock pin. Mgnet holder D TG rm Clw A nd clw B should fix the pinch rm. ET mgnet When ttching the mgnet holder, the lock pin should be fixed t position deeper thn line D

22 4. CHECK AND ADJUSTMENT When the prts of the tpe pth (tpe guide, reel tble, etc.) hve been removed or prts hve been replced, djust the following prts ccording to the flowchrt below. ADJUSTMENT POSITION TG3 (Trcking entrnce, curl) TG6 (Trcking exit, curl) TG (TG height/fwd height, curl) TG7 (TG7 height/rvs position, curl) TG (TG height, curl) Spring hook slider (RVS bck tension) Spring hook slider (FWE bck tension) S bnd djuster (FWD position) TG8 (TG8 height, curl) T bnd djuster (RVS position) RV to 4 (MD-76 bord) (TG/7 electric tension regultor) RV3 RV RV4 RV Reel tble (height) ADJUSTMENT ORDER (FLOWCHART) ADJUSTMENT START - When only the TG/8 guide is replced, perform tpe pth djustment fter height djustment. 4-. REEL TABLE HEIGHT CHECK AND ADJUSTMENT 4-. TG/8 HEIGHT CHECK AND ADJUSTMENT 4-3. TG/7 HEIGHT CHECK AND ADJUSTMENT 4-4. FWD/RVS POSITION CHECK AND ADJUSTMENT 4-5. TG/7 ELECTRIC TENSION REGULATOR CHECK AND ADJUSTMENT 4-6. FWD/RVS BACK TENSION CHECK AND ADJUSTMENT ADJUSTMENT START - If the TG/8 guide is not replced nd removed, proceed to TG/7 height djustment. ADJUSTMENT START -3 ADJUSTMENT START PREPARATION FOR ADJUSTMENT AND TAPE PATH CHECK 4-8. TRACK ADJUSTMENT AND CHECK 4-9. TRACK CHECK 4-0. CUE/REV CHECK 4-. CURL CHECK AND CURL ADJUSTMENT 4-. RISING CHECK Tpe Pth Adjustment ADJUSTMENT END

23 4-. REEL TABLE HEIGHT CHECK AND ADJUSTMENT. Preprtion before check Check tht the cssette comprtment hs lredy been removed. (Refer to pge 4.) Fit the cssette reference plte (J-) in the cssette positioning shfts. Cssette reference plte (J-) Reel reference plte (J-) Respectively ttch it to the S nd T sides nd perform the checks. Cssette positioning shfts. Check nd djustment Put the reel reference plte (J-) on ech reel tble. Rotte the screw block of the reel tble so tht the height of the cssette reference plte is the sme s tht of the reel reference plte. S/T reel tble Sme height (norml position) S/T reel tble The reel tble is too high. (Adjust the height while referring to the figure below.) Attch the cssette reference plte (J-) when the reel tble is t the position of "S cssette". When selecting cssette position, be creful not to touch the slider drive shft becuse it cn be esily bent or broken. Do not touch the slider drive shft. Reel select slider Put the reel nd cssette reference plte nd djust the height. The reel tble is lowered. Cross-heded screwdriver The reel tble is rised. Attch the boss while ligning it in the hole of the cssette reference plte (J-). Boss Select the desired cssette position by pressing the clw position. 4-. TG/8 HEIGHT CHECK AND ADJUSTMENT. Preprtion before check ) Check tht the cssette comprtment block hs lredy been removed. (Refer to pge 4.) ) Set the mechnism deck to the loding end position (TG to 7 lredy moved to the loding end position nd the pinch roller is in the unloding position). Alterntively, set the mechnism deck to the LE position using the mode selector II. (Refer to pge 4.) 3) Plce the TG/7 preset plte (J-3). Fce the mirror (J-4) in the direction of the rrow nd perform visul check.. Check nd djustment Rotte the TG upper flnge until the heights of the TG/7 preset plte (J-3) nd TG or TG8 roller block re the sme. Alterntively, rotte the TG upper flnge by 0 in the direction of lowering the guide from the reference height where the preset plte nd roller hve the sme height. Not good TG or TG8 S/T reel tble Not good TG or TG8 TG/7 preset plte (J-3) The guide is too low. The guide is too high. Screwdriver for tpe pth (J-5) Good TG or TG8 The guide is rised. The guide is lowered. 0 0 Cssette reference plte (J-) 3 The norml height is the position where the TC upper flnge is rotted by 0 in the direction of lowering the guide from the djusted height while referring to the figure below.

24 4-3. TG/7 HEIGHT CHECK AND ADJUSTMENT. Preprtion before check ) Check tht the cssette comprtment block hs lredy been removed. (Refer to pge 4.) ) Set the mechnism deck to the loding end position (TG to 7 lredy moved to the loding end position nd the pinch roller is in the unloding position). Alterntively, set the mechnism deck to the LE position using the mode selector II. (Refer to pge 4.) 3) Plce the TG/7 preset plte (J-3). Attch the boss while ligning it with the hole of the cssette reference plte (J-). Boss Fce the mirror (J-4) in the direction of the rrow nd perform visul check.. Check nd djustment Rotte the TG upper flnge until the height of the TG/7 preset plte (J-3) nd TG or TG7 roller block is the sme. Alterntively, rotte the TG upper flnge of only TG by 60 in the direction of rising the guide from the djusted height while referring to the figure below. Not good TG or TG7 Not good TG or TG7 TG/7 preset plte (J-3) The guide is too low. The guide is too high. Screwdriver for tpe pth (J-5) Good TG or TG7 The guide is lowered. The guide is rised FWD/RVS POSITION CHECK AND ADJUSTMENT Cssette reference plte (J-). Preprtion before check ) Check tht the cssette comprtment block hs lredy been removed. (Refer to pge 4.) ) Set the mechnism deck to the loding end position (TG to 7 lredy moved to the loding end position nd the pinch roller is in the unloding position). Alterntively, set the mechnism deck to the LE position using the mode selector II. (Refer to pge 4.) 3) Plce the TG/7 preset plte (J-3). Align the center of TG with the verticlly extended line of the jig plte's tip s shown. The norml height of TG is the position where the TC upper flnge is rotted by 60 in the direction of rising the guide from the djusted height while referring to the figure below. The norml height of TG7 is the current one.. Check nd djustment Rotte ech djuster to djust the TG/7 position until or of the TG/7 preset plte (J-3), TG nd TG7 re in line. Align the center of TG7 with the verticlly extended line of the jig plte's tip s shown. TG rm TG7 rm Rotte the djuster with resin screwdriver, etc. Be creful not to bend the bnd. TG/7 preset plte (J-3) 4 Rotte the djuster with resin screwdriver, etc. Be creful not to bend the bnd.

25 4-5. ELECTRIC TENSION REGULATOR CHECK AND ADJUSTMENT OF TG/7 ARM. Preprtion before check ) Check tht the cssette comprtment block hs lredy been removed. (Refer to pge 4.) ) Set the mechnism deck to the loding end position (TG to 7 lredy moved to the loding end position nd the pinch roller is in the unloding position). Alterntively, set the mechnism deck to the LE position using the mode selector II (J-9). (Refer to pge 4.) Boss Attch the boss while ligning it with the hole of the cssette reference plte (J-). TG/7 preset plte (J-3) 3) Attch the cssette reference plte (J-) nd TG/7 preset plte (J-3). (Refer to pge 4.) 4) Connect the rely bord for tension regultor djustment (J- 4) nd other equipment s shown in the figure below. Regulted power supply Apply +6.5 to 8.5V. Digitl voltmeter Chnge the connection of the positive (+) probe to E.T out (TG7) nd E.T out (TG) for mesurement. 9 pin DC IN (+) DC IN () E. T out (TG 7) GND Cssette reference plte (J-) CN 6 pin E. T out (TG ) Bord for tension regultor djustment (J-7) Rely bord for tension regultor djustment (J-4). Check nd djustment Connect the positive (+) probe of digitl voltmeter to E.T out (TG: for mesurement of TG dt) or to E.T out (TG7: for mesurement of TG7 dt). First, press the guide to the TG/7 preset plte (J-3), then relese your hnd from the guide nd red the voltmeter vlue. Adjust RV4 (TG side) or RV (TG7 side) until the voltmeter mesurement is.5 ± 0. V (TG side) or. ± 0. V (TG7 side) when relesing your hnd. Then press the guide to the TG/7 preset plte (J-3). Adjust RV3 (TG side) or RV (TG7 side) until the voltmeter mesurement is.3 ± 0. V. [Adjustment order] Adjustment strt TG:.5V djustment (MD-76 bord: RV4) TG:.3V djustment (MD-76 bord: RV3) Good 3 TG:.5V check Not good [.5V djustment of TG] Relese your hnd from the guide nd rotte RV4. [.V djustment of TG7] Relese your hnd from the guide nd rotte RV. 4 TG:.5V djustment (MD-76 bord: RV4) Good 5 TG:.3V check Not good 6TG7:.V djustment (MD-76 bord: RV) MD-76 bord 7 TG7:.3V djustment (MD-76 bord: RV) RV3 RV Good 8 TG7:.V check Not good [.3V djustment of TG] Rotte RV3 while pushing the guide. RV4 RV [.3V djustment of TG7] Rotte RV while pushing the guide. 9 TG7:.V djustment (MD-76 bord: RV) Good 0 TG7:.3V check Not good Adjustment end 5

26 4-6. FWD/RVS BACK TENSION CHECK AND ADJUSTMENT. Preprtion before check Mount the mechnism deck in the min unit, connect ll the connectors, then insert the mini DV torque cssette (J-7) into the mechnism block. Mini DV torque cssette (J-8). Check nd djustment FWD (TG) side The torque vlue should stisfy 9.5 ± mn m while the mini DV torque cssette runs in the FWD mode. If it does not stisfy this, tke the following mesure. Re-ttch the spring to the upper hook if the mesurement vlue is beyond the specifictions or re-ttch the spring to the lower hook if the mesurement vlue is below the specifictions. Then, repet the mesurement. For more detils, refer to pge. [FWD side] 9.5 ± mn m Visully check the guge block of the cssette with the cbinet (L) ssembly removed. [RVS side] 9.5 ± mn m RVS (TG7) side The torque vlue should stisfy 9.5 ± mn m while the mini DV torque cssette runs in the RVS mode. If it does not stisfy this, tke the following mesure. Re-ttch the spring to the upper hook if the mesurement vlue is beyond the specifictions or re-ttch the spring to the lower hook if the mesurement vlue is below the specifictions. Then, repet the mesurement. Be creful tht these spring blocks my hinder the FL motor m 0 40 X0 mn X0 mn m For more detils, refer to pge PREPARATION FOR ADJUSTMENT AND TAPE PATH CHECK Preprtion before djustment (connection nd setting). Mount the mechnism deck in the min unit. (Connect ll the connectors.). Clen the tpe running side. (Refer to Section, Periodic check.) 3. Connect the djustment remote commnder (J-8) to the LANC jck. Adjustment remote commnder (RM-95) Tpe pth check (checking the RF wveform) Ply bck the trcking tpe (J-6) nd check the sttes t the entrnce nd exit of the RF wveform. If it is not flt t either side, perform the djustments from Adjustment Strt-4 in the flowchrt on pge. Norml entrnce nd exit sides 4. Turn the HOLD switch of the djustment remote commnder to the ON position. 5. Select pge: 3, ddress: 33 nd set dt: Select pge: 3, ddress: 6 nd set dt: 3. Fulty entrnce side Fulty exit side 7. Connect n oscilloscope to VI-56 bord CN007 vi the CPC- 3 jig (J A)(J-8). Chnnel 7: VI-56 bord, CN007 Pin (Note) Externl trigger: VI-56 bord, CN007 Pin 3 Note: Connect 75 Ω resistor between pins of CN007 nd (GND). 75 Ω resistor (Prts code: ) 6