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Samsung DX7-A Mechanical Manual

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MECHANICAL
3 File with the SERVICE MANUAL.
VHS DECK
© Samsung Electronics Co., Ltd. NOV. 1997
DX7-A/DX7-AC
DX8-A/DX8-AC
Manual
1. Disassembly and Reassembly
2. Alignment and Adjustment
CONTENTS
AC68-20392A

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Summary of Contents for Samsung DX7-A

  • Page 1 DX7-A/DX7-AC DX8-A/DX8-AC MECHANICAL Manual 3 File with the SERVICE MANUAL. VHS DECK CONTENTS 1. Disassembly and Reassembly 2. Alignment and Adjustment © Samsung Electronics Co., Ltd. NOV. 1997 AC68-20392A...

  • Page 2: Disassembly And Reassembly

    1. Disassembly and Reassembly 1-1 Deck Parts Locations 1-1-1 Deck (Top View) 9 10 Fig. 1-1 Deck Top Parts Location (DX7-A/DX8-A DECK ONLY) 9. FULL ACE HEAD AAS’Y 1. ARM TENSION FULL ASS’Y 17. REEL DISK “L” ASS’Y 10. UNIT PINCH ROLLER ASS’Y 2.
  • Page 3 12. LEVER REVIEW 5. HEAD CLEANER ASS’Y (DX8-A/AC ONLY) 13. BRAKE SUB “R” ASS’Y (DX7-AC/DX8-AC ONLY) 20. LEVER REC SWITCH 14. REEL DISK “R” ASS’Y 6. GUIDE ROLLER ASS’Y “S” 15. GEAR RELAY “T” ASS’Y 7. CYLINDER ASS’Y Samsung Electronics...
  • Page 4 9. LEVER REC SWITCH 3. MOTOR D.D CAPSTAN 10. LEVER IDLER CHANGE 4. BRAKE CAPSTAN ASS’Y 11. CLUTCH ASS’Y 5. GEAR LOADING “R” ASS’Y 12. UNIT LOADING 6. MOTOR CYLINDER 13. GEAR MASTER 7. GEAR LOADING “L” ASS’Y Samsung Electronics...
  • Page 5 Disassembly and Reassembly 1-1-4 Housing Fig. 1-4 Housing Parts Location 1. CHASSIS SIDE “L” ASS’Y 2. UPPER CHASSIS 3. CHASSIS SIDE “R” ASS’Y 4. SHAFT ARM ASS’Y 5. HOLDER CASSETTE ASS’Y 6. LEVER DOOR Samsung Electronics...

  • Page 6: Housing Assembly

    2. Lift the Housing AssÕy in the direction of arrow ÒBÓ, while pushing the tab @ in the direction of arrow ÒAÓ. (Refer to detail drawing) 3 SCREWS MAIN BASE "A" Fig. 1-5 Housing Ass’y Removal from Main Base Samsung Electronics...
  • Page 7 Disassembly and Reassembly 1-2-2 Diassembly 2 SCREWS UPPER CHASSIS HOLDER CASSETTE ASS'Y CHASSIS SIDE "L" CHASSIS SIDE "R" SHAFT ARM ASS'Y Fig. 1-6 Housing Ass’y Removal Samsung Electronics...
  • Page 8 Disassembly and Reassembly 1-2-3 Upper Chassis Removal 1. Remove 2 Screws !. 2. Lift the Upper Chassis @ in the direction of arrow ÒAÓ. 2 SCREWS UPPER CHASSIS "A" Fig. 1-7 Upper Chassis Removal Samsung Electronics...
  • Page 9 SIDE "R" & SHAFT ARM "R") (SIDE VIEW) CHASSIS SIDE "L" <DETAIL> 4 SHAFT ARM ASS'Y "D" SHAFT ARM "R" 3 CHASSIS SIDE "R" "C" <Fig. B> SLIDE DAMPER Fig. 1-8 Holder Cassette Ass’y and Chassis Side L/R Samsung Electronics...
  • Page 10 Slide are not returned to their original positions. If this happens by accident, push the Damper Slide of Side Chassis ÒRÓ in the direction of arrow ÒDÓ, and return the Damper Slide in the reverse direction of arrow ÒDÓ when the Arm Shaft AssÕy is in eject mode. Samsung Electronics...
  • Page 11 2. Push the Stopper # of the Side Chassis ÒRÓ $. Move the Damper Slide @ in the direction of arrow. 3. Align the Damper Slide @ with the chassis side tab (as shown detail drawing). SPRING- SLIDE DAMPER SLIDE DAMPER STOPPER CHASSIS SIDE "R" CHASSIS SIDE "R" TAB SLIDE DAMPER Fig. 1-10 Slide Damper Removal 1-10 Samsung Electronics...

  • Page 12: Cylinder Ass'y

    1-3-1 Exploded View of Cylinder Ass’y 2 SCREWS ASS'Y - MOTOR STATOR 2 SCREWS ASS'Y MOTOR - ROTOR SPRING CARBON TIP ASS'Y - SUB CYLINDER ASS'Y - BASE CYLINDER 3 SCREWS Fig. 1-11 Expleded View of Cylinder Ass’y Samsung Electronics 1-11...
  • Page 13 Disassembly and Reassembly 1-3-2 Stopper Tape Removal (Only for Deck : DX7-A/DX8-A) 1. Release 1 tab ! in the direction of arrow ÒAÓ. (Refer to detail drawing) 2. Lift the Tape Stopper @ in the direction of arrow ÒBÓ. Note: Stopper tape has deleted from JAN.1998 "A"...
  • Page 14 1. Remove 3 Screws ! holding the Main Base and the Cylinder AssÕy. 2. Lift the Cylinder AssÕy @ in the direction of arrow. Note : Do not touch the video heads during removal or installation. 3 SCREWS CYLINDER ASS'Y Fig. 1-14 Cylinder Ass’y Removal from Main Base Samsung Electronics 1-13...
  • Page 15 Take care not to disconnect the FPC cable from the FPC Holder (The FPC cable is very short). HOLDER FPC CYLINDER BASE CYLINDER BASE HOLDER FPC <DETAIL : BOTTOM VIEW> Fig. 1-15 Head Brush and Holder FPC Removal 1-14 Samsung Electronics...
  • Page 16 1. Remove 3 Screws ! from the Cylinder Base @. 2. Lift the Cylinder AssÕy # from the Cylinder Base @ in the direction of arrow. CYLINDER SUB ASS'Y CYLINDER BASE 3 SCREWS Fig. 1-16 Cylinder Ass’y Removal from Cylinder Base Samsung Electronics 1-15...
  • Page 17 2. Remove the Motor Stator @ from the Cylinder Sub AssÕy %. 2SCREWS MOTOR - STATOR SPRING CARBON TIP CYLINDER SUB ASS'Y Fig. 1-17 Motor Stator Removal Note : When disassembling the Motor-Stator, take extreme care not to loose the carbon-tip and spring. 1-16 Samsung Electronics...
  • Page 18 Disassembly and Reassembly 1-3-8 Motor Rotor Removal 1. Remove 2 Screws !. 2. Lift The Motor Rotor@. 2 SCREWS MOTOR - ROTOR DRUM SUB ASS'Y Fig. 1-18 Motor Rotor Removal Samsung Electronics 1-17...
  • Page 19 1. Make sure that phase matching holes of the Motor Rotor and the Cylinder Sub AssÕy are aligned correctly as shown in Fig. 1-19 (Refer to phase matching hole). 2. Secure with 2 Screws. 2 SCREWS MOTOR - ROTOR PHASE MATCHING HOLE DRUM SUB ASS'Y Fig. 1-19 Assembly of Motor Rotor and Cylinder Sub Ass’y 1-18 Samsung Electronics...
  • Page 20 1. Reinstall the Motor Stator ! toward the FPC cable of Cylinder Sub AssÕy @. 2. Secure 2 Screws. (Refer to Fig. 1-17) MOTOR - STATOR CYLINDER SUB ASS'Y Fig. 1-20 Assembly of Motor Stator and Cylinder Sub Ass’y Samsung Electronics 1-19...
  • Page 21 Disassembly and Reassembly 1-4 Main Deck Removal and Reassembly 1-4-1 Slide Rack Housing Removal 1. Lift the Slide Rack Housing. SLIDE RACK HOUSING Fig. 1-21 Slide Rack Housing Removal 1-20 Samsung Electronics...
  • Page 22 2. Align the Slot #1 of Master Gear ! with the Tooth #1 of Rack Housing Slide @. (Refer to timing point) TIMING POINT SLOT #1 TOOTH #1 DETAIL GEAR MASTER SLIDER RACK HOUSING (SLIDE VIEW) ( TOP VIEW ) ARM " R" ( SIDE VIEW ) Fig. 1-22 Assembly of Slide Rack Housing and Gear Master Samsung Electronics 1-21...
  • Page 23 2. Release the tab @ in the direction of arrow. (Refer to detail drawing) 3. Lift the Sub ÒLÓ Brake #. SPRING-BRAKE SUB "L" BRAKE SUB "L" BRAKE SUB "L" <DETAIL> Fig. 1-23 Brake Sub “L” Removal 1-22 Samsung Electronics...
  • Page 24 2. Release the tab @ in the direction of arrow. (Refer to detail drawing) 3. Lift the Full Tension Arm AssÕy #. SPRING TENSION ARM TENSION FULL ASS'Y ARM TENSION FULL ASS'Y <DETAIL> Fig. 1-24 Arm Tension Full Ass’y Removal Samsung Electronics 1-23...
  • Page 25 1-4-5 Lever JOG Ass’y Removal (Only for deck : DX8-A/DX8-AC) 1. Remove the 1 Screw !. 2. Lift the JOG Lever AssÕy @. 1 SCREW LEVER JOG ASS'Y TIMING LEVER JOG ASS'Y <TOP VIEW> Fig. 1-25 Lever JOG Ass’y Removal 1-24 Samsung Electronics...
  • Page 26 Note : When reinstalling, be sure to install the Reel Disk ÒLÓ @ after installing the Plain Washer #. REEL-DISK "L" WASHER-PLAIN WASHER-SLIT GEAR-RELAY "S" ASS'Y REEL-DISK "L" <DETAIL> Fig. 1-26 Reel Disk “L” and Gear Relay “S” Ass’y Removal Samsung Electronics 1-25...
  • Page 27 2. Release the tab @ in the direction of arrow. (Refer to detail drawing) 3. Lift the Brake Sub ÒRÓ AssÕy #. SPRING-BRAKE SUB "R" BRAKE-SUB "R" ASS'Y BRAKE-SUB "R" ASS'Y <DETAIL> Fig. 1-27 Brake Sub “R” Ass’y Removal 1-26 Samsung Electronics...
  • Page 28 Note : When reinstalling, be sure to install the Reel Disk ÒRÓ AssÕy @ after installing the Plain Washer #. REEL-DISK "R" ASS'Y WASHER-SLIT GEAR-RELAY "T" WASHER-PLAIN REEL-DISK "R" ASS'Y <DETAIL> Fig. 1-28 Reel Disk “R” Ass’y and Gear Relay “T” Removal Samsung Electronics 1-27...
  • Page 29 4. Release the tab $ in the direction of arrow ÒBÓ. (Refer to detail drawing B) 5. Lift the Main ÒRÓ Brake %. BRAKE-MAIN "L" ASS'Y SPRING-BRAKE MAIN BRAKE-MAIN "R" ASS'Y "B" BRAKE-MAIN "L" ASS'Y BRAKE-MAIN "R" ASS'Y "A" <DETAIL A> <DETAIL B> Fig. 1-29 Brake Main “L”, “R” Ass’y Removal 1-28 Samsung Electronics...
  • Page 30 Disassembly and Reassembly 1-4-10 Idler Ass’y Removal 1. Remove the Slit Washer !. 2. Lift the Idler AssÕy @. WASHER-SLIT IDLER-ASS'Y Fig. 1-30 Idler Ass’y Removal Samsung Electronics 1-29...
  • Page 31 1-4-11 Unit Pinch Roller Ass’y Removal 1. Remove the Slit Washer !. 2. Lift the Pinch Roller Unit @. 3. Lift the Arm Pinch Spring #. WASHER-SLIT UNIT-PINCH ROLLER SPRING-ARM PINCH Fig. 1-31 Unit Pinch Roller Ass’y Removal 1-30 Samsung Electronics...
  • Page 32 1. Install the Pinch Roller Unit as shown in Fig. 1-32. (Refer to A, B) SLIDER - PUSH "A" SLIDER - PINCH MOTOR - D.D CAPSTAN "B" UNIT - PINCH ROLLER (TOP VIEW) Fig. 1-32 Assembly of Unit Pinch Roller Samsung Electronics 1-31...
  • Page 33 Lever Pinch Cam, Arm Review Ass’y and Lever Review Ass’y LEVER-PINCH COMP ASS'Y ARM-REVIEW ASS'Y LEVER-PINCH CAM LEVER-REVIEW Fig. 1-33 Exploded View of Lever Pinch Comp Ass’y, Lever Pinch Cam, Arm Review Ass’y and Lever Review Ass’y 1-32 Samsung Electronics...
  • Page 34 2. Lift the Pinch Comp Lever AssÕy @. Note : DonÕt touch the Pinch Comp Lever AssÕy ! to Audio Head Base during removal. LEVER-PINCH COMP ASS'Y LEVER-PINCH COMP ASS'Y <DETAIL> Fig. 1-34 Lever Pinch Comp Ass’y Removal Samsung Electronics 1-33...
  • Page 35 1-4-15 Lever Pinch Cam Removal 1. Release the tab ! in the direction of arrow. (Refer to detail drawing) 2. Lift the Pinch Cam Lever @. LEVER-PINCH CAM LEVER-PINCH CAM <DETAIL> Fig. 1-35 Lever Pinch Cam Removal 1-34 Samsung Electronics...
  • Page 36 Note : Take extreme care not to damage when removing the Review Arm AssÕy @. (B part of detail drawing A) ARM-REVIEW ASS'Y <DETAIL B> STOPPER TAB ARM-REVIEW ASS'Y ARM REVIEW ASS'Y <DETAIL A> Fig. 1-36 Arm Review Ass’y Removal Samsung Electronics 1-35...
  • Page 37 Disassembly and Reassembly 1-4-17 Lever Review Removal 1. Release the tab ! in the direction of arrow. (Refer to detail drawing) 2. Lift the Review Lever @. LEVER-REVIEW <DETAIL> Fig. 1-37 Lever Review Removal 1-36 Samsung Electronics...
  • Page 38 Disassembly and Reassembly 1-4-18 Belt Capstan Removal 1. Remove the Capstan Belt !. Note : Take extreme care not to touch the grease when removing or reinstalling. BELT-CAPSTAN Fig. 1-38 Belt Capstan Removal Samsung Electronics 1-37...
  • Page 39 2. Release the tab @ in the direction of arrow. (Refer to detail drawing) 3. Lift the Capstan Brake AssÕy #. SPRING BRAKE CAPSTAN BRAKE CAPSTAN ASS'Y ASS'Y BRAKE CAPSTAN ASS'Y <DETAIL> Fig. 1-39 Brake Capstan Ass’y Removal 1-38 Samsung Electronics...
  • Page 40 1-4-20 Motor D.D Capstan Removal 1. Remove 3 Screws !. (Top view) 2. Lift the Capstan D.D Motor @ in the direction of arrow. (Bottom view) MOTOR D.D CAPSTAN <BOTTOM VIEW> <TOP VIEW> 3 SCREWS Fig. 1-40 Motor D.D Capstan Removal Samsung Electronics 1-39...
  • Page 41 Disassembly and Reassembly 1-4-21 Clutch Ass’y Removal 1. Remove the Slit Washer !. 2. Lift the Clutch AssÕy @. 3. Remove the Plain Washer #. WASHER-SLIT CLUTCH ASS'Y WASHER-PLAIN Fig. 1-41 Clutch Ass’y Removal 1-40 Samsung Electronics...
  • Page 42 Disassembly and Reassembly 1-4-22 Gear Master Removal 1. Remove the Slit Washer !. 2. Lift the Master Gear @. WASHER-SLIT GEAR MASTER Fig. 1-42 Gear Master Removal Samsung Electronics 1-41...
  • Page 43 1. When reinstalling, be sure to align the arrow of the Master Gear ! with home Gear of the Worm-Wheel Gear @. (Refer to timing point) GEAR - MASTER GEAR - WORM WHEE TIMING UNIT - LOADING Fig. 1-43 Assembly of Gear Master 1-42 Samsung Electronics...
  • Page 44 Disassembly and Reassembly 1-4-24 Unit Loading Removal 1. Remove 2 Screws !. 2. Lift the Loading Unit @ in the direction of arrow. 2 SCREWS UNIT LOADING Fig. 1-44 Unit Loading Removal Samsung Electronics 1-43...
  • Page 45 Disassembly and Reassembly 1-4-25 Lever Slide Pinch Removal 1. Remove the Slit Washer !. 2. Lift the Slide Lever Pinch @. WASHER-SLIT LEVER SLIDER PINCH Fig. 1-45 Lever Slide Pinch Removal 1-44 Samsung Electronics...
  • Page 46 2. Insert the Pinch Slide ! into the hole of Slide Lever Pinch @. (Refer to detail ÒAÓ) SLIDER - PINCH LEVER - SLIDER PINCH SLIDER - MAIN SLIDER - PINCH BOSS Fig. 1-46 Assembly of Lever Slide Pinch Samsung Electronics 1-45...
  • Page 47 Disassembly and Reassembly 1-4-27 Slide Main Removal 1. Remove the Slit Washer !. 2. Release 3 tabs @, #, $ in the direction of arrow. 3. Lift the Main Slide %. SLIDER MAIN WASHER-SLIT Fig. 1-47 Slide Main Removal 1-46 Samsung Electronics...
  • Page 48 Note : Be sure to assemble the Main Slide when the Loading L/R Gear AssÕy is in unloading position. GEAR LOADING "R"ASS'Y WASHER - SLIT GEAR LOADING "L "ASS'Y "a" "A" "d" "b" "B" SLIDE MAIN LEVER IDLER CHANGE LEVER TENSION CONTROL "C" Fig. 1-48 Assembly of Slide Main Samsung Electronics 1-47...
  • Page 49 2. Release the tab @ in the direction of arrow. 3. Lift the Shift Lever #. SPRING LEVER SHIFT LEVER SHIFT LEVER SHIFT CLAW SPRING LEVER SHIFT SPRING LEVER SHIFT <DETAIL A> <DETAIL B> Fig. 1-49 Lever Shift Ass’y Removal 1-48 Samsung Electronics...
  • Page 50 1. Release the tab ! in the direction of arrow. (Refer to detail drawing) 2. Lift the lever Change Idler @. LEVER IDLER CHANGE LEVER IDLER CHANGE <BOTTOM VIEW> MAIN BASE <TOP SIDE> <DETAIL> Fig. 1-50 Lever Idler Change Removal Samsung Electronics 1-49...
  • Page 51 SLIDE GEAR LOADING ASS'Y "T" SLIDE GEAR LOADING ASS'Y "S" GEAR LOADING "R" ASS'Y GEAR LOADING "L" ASS'Y SPRING LOADING "L" ASS'Y SPRING LOADING "R" ASS'Y <DETAIL A > <DETAIL B> Fig. 1-51 Gear Loading “L”, “R” Ass’y Removal 1-50 Samsung Electronics...
  • Page 52 1. When reinstalling, be sure to align 2 arrow as shown in Fig. 1-52. (Refer to timing point) TIMING POINT ALIGN TWO ARROWS GEAR - LOADING GEAR - LOADING " R" ASSEMBLY " L" ASSEMBLY Fig. 1-52 Assembly of Gear Loading “L”, “R” Ass’y Samsung Electronics 1-51...
  • Page 53 1. Push the tab ! in the direction of arrow ÒAÓ. (Refer to detail drawing) 2. Lift the Slide Pinch @ in the direction of arrow ÒBÓ. SLIDER PINCH MAIN BASE "A" <DETAIL> "B" "A" Fig. 1-53 Slide Pinch Removal 1-52 Samsung Electronics...
  • Page 54 3. Lift the Push Slider @ by pushing the tab # in the direction of arrow ÒBÓ. (Refer to ditail drawing) SPRING SLIDER PUSH SLIDER PUSH "A" SLIDER PUSH "B" <DETAIL-TOP VIEW> Fig. 1-54 Slide Push Removal Samsung Electronics 1-53...
  • Page 55 Disassembly and Reassembly 1-4-35 Prism LED Removal 1. Release the tab ! in the direction of arrow. (Refer to detail drawing) 2. Lift the LED Prism @. PRISM LED PRISM LED <DETAIL-TOP VIEW> Fig. 1-55 Prism LED Removal 1-54 Samsung Electronics...
  • Page 56 2. Release the tab @ in the direction of arrow. (Refer to detail drawing) 3. Lift the Record Switch Lever #. SPRING REC S/W LEVER REC S/W MAIN BASE LEVER REC S/W 2 TAB <DETAIL> Fig. 1-56 Lever Record Switch Removal Samsung Electronics 1-55...
  • Page 57 Disassembly and Reassembly 1-4-37 Full Erase Head Removal 1. Remove 1 Screw !. 2. Lift the F/E Magnet Head @. 1 SCREW MAGNET F/E HEAD Fig. 1-57 Full Erase Head Removal 1-56 Samsung Electronics...
  • Page 58 Note : When adjusting the X-Position adjustment gear using (+) driver, do not adjust by force. 1 SCREW MAGNET ACE HEAD ASS'Y X-POSITION ADJUST ACE HEAD BAS <DETAIL B> TIMING POINT HOLDER ACE <DETAIL A> Fig. 1-58 ACE Head Ass’y Removal and Reassembly Samsung Electronics 1-57...
  • Page 59 3. Move the Roller ÒSÓ, ÒTÓ Guide AssÕy to slot and then lift it to remove. (Refer to arrow) SLIDE GEAR LOADING SLIDE GEAR LOADING ASS'Y "S" ASS'Y "T" Fig. 1-59 Slide Guide Roller “S”, “T” Ass’y Removal 1-58 Samsung Electronics...
  • Page 60 4. Install the Guide Roller S, T Slide ^, & into the Rail slot and then move it to the position of Loading Gear L, R AssÕy $, %. (Refer to Fig. 61) 5. Turn the Master Gear @ toward arrow ÒAÓ. (Eject mode) LEVER LOCK "A" GEAR MASTER "B" HOLDER CASSETTE ASS'Y Fig.1-60 How to operate the Housing Ass’y Samsung Electronics 1-59...
  • Page 61 SLIDER - G / R SLIDER - G / R ASSEMBLY (T) ASSEMBLY (S) GEAR - LOADING GEAR - LOADING " L" ASSEMBLY " R " ASSEMBLY Fig. 1-61 Assembly of Slide Guide Roller “S”, “T” Ass’y 1-60 Samsung Electronics...

  • Page 62: Cleaning And Lubrication

    Depending on the frequency of use and environmen- tal conditions, periodic lubrication may be required. When lubricating, first remove the old lubricant, then sparingly apply new lubricant. Excessive lubricant is transferred to other assemblies, malfunction will result. Samsung Electronics 1-61...
  • Page 63 TOP VIEW BRAKE MAIN “R” ASS’Y TOP VIEW SPRING BRAKE MAIN TOP VIEW BRAKE SUB “L” ASS’Y TOP VIEW BRAKE SUB “R” ASS’Y TOP VIEW SPRING BRAKE SUB “L” TOP VIEW SPRING BRAKE SUB “R” TOP VIEW 1-62 Samsung Electronics...
  • Page 64 HOUSING ASS’Y 3 SCREWS TOP VIEW CYLINDER ASS’Y 3 SCREWS TOP VIEW MAGNET F/E HEAD 1 SCREW TOP VIEW STOPPER TAPE TOP VIEW DX7-A/DX8-A HEAD CLEANER ASS’Y TOP VIEW DX7-AC/DX8-AC Note: Stopper tape has deleted from JAN.1998 Samsung Electronics 1-63...
  • Page 65 Disassembly and Reassembly MEMO 1-64 Samsung Electronics...

  • Page 66: Alignment And Adjustment

    Fig. 2-1 Location of Tape Transport Adjustment CYLINDER ASS'Y PINCH ROLLER FE HEAD GUIDE ROLLER "T" GUIDE ROLLER "S" POLE TENSION #8 GUIDE SHAFT REVIEW POLE MAIN BASE ACE HEAD #1 GUIDE POLE #3 GUIDE SHAFT CAPSTAN SHAFT Fig. 2-2 Tape Travel Diagram Samsung Electronics...

  • Page 67: Tape Transport System Adjustment

    SCREW(B) X-POSITION AZIMUTH ADJUST ADJUST GEAR HOLE SCREW(D) SCREW(A) X-POINT LOCKING HEIGHT ADJUST Fig. 2-3 Location of A/C Head Adjustment Screw AUDIO HEAD VIDEO TAPE 0 ~ 0 .25 mm CONTROL HEAD Fig. 2-4 A/C Head Height Adjustment Samsung Electronics...
  • Page 68 2. Connect channel-1 scope probe to audio output test point. 3. Adjust screw (B) to achieve maximum audio level. (See Fig. 2-3) 2-2-1 (d) A/C HEAD POSITION (X-POINT) ADJUSTMENT 1. See page 5-2 of the Service Manual for A/C Head position (X-Point) adjustment. Samsung Electronics...
  • Page 69 4. If the section A in Fig. 2-7 does not meet the specification, adjust the S-guide roller up or down. 5. If the section B in Fig. 2-7 does not meet the specification, adjust T-guide roller up or down. H'D SWITCHING PULSE ENVELOPE Fig. 2-7 Adjustment Points Samsung Electronics...
  • Page 70 9. After the adjustment is completed, tighten the set screws. IDEAL ENVELOPE L HEIGHT L HEIGHT R HEIGHT R HEIGHT TOO HIGH TOO LOW TOO HIGH TOO LOW GUIDE ROLLER (L) GUIDE ROLLER (R) Fig. 2-8 S, T-Guide Roller Height Adjustment Samsung Electronics...
  • Page 71 2. Play back a self recorded tape (recording made on the unit using with T-120, E-120). The video envelope should meet the specification as shown in Fig. 2-10. In SP mode, (A) should equal (B). If the head gap is wide, upper cylinder should be checked. Fig. 2-10 Envelope Output and Output Level Samsung Electronics...
  • Page 72 2. If excessive tape wrinkle is observed, perform the following adjustments in Playback mode : 3 Tape wrinkle at the S, T-guide roller section : Linearity adjustment. 3 Tape wrinkle at tape guide flange : A/C head assembly coarse adjustment. Samsung Electronics...

  • Page 73: Reel Torque

    Counterclockwise : Torque UP Clockwise : Torque DOWN F/E HEAD 0.5mm ARM - TENSION FULL ASSEMBLY CAM TENSION ADJUST VCM-11 SPRING TENSION TENSION BAND Fig. 2-11 Tension Pole and Back Tension Adjustment Fig. 2-12 Back Tension Tape Torque Cassette Samsung Electronics...

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