1. Precautions 1-1 Safety Precautions 1. Be sure that all of the built-in protective devices are 5. With the unit completely reassembled, plug the AC replaced. Restore any missing protective shields. line cord directly the power outlet. With the unit’s AC switch first in the ON position and then OFF, 2.
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Precautions 11. Always connect a test instrument’s ground lead to the instrument chassis ground before connecting the positive lead; always remove the instrument’s ground lead last. 12. Observe the original lead dress, especially near the following areas : Antenna wiring, sharp edges, and especially the AC and high voltage power supplies.
Precautions 1-2 Handling the optical pick-up The laser diode in the optical pick up may suffer elec- WRIST-STRAP trostatic breakdown because of potential static elec- FOR GROUNDING tricity from clothing and your body. The following method is recommended. THE UNIT (1) Place a conductive sheet on the work bench (The black sheet used for wrapping repair parts.) CONDUCTIVE SHEET...
Precautions 1-3 Pick-up disassembly and reassembly 1-3-2 Assembly 1-3-1 Disassembly 1) Replace the Pick-up. 1) Remove the power cord. 2) Remove the soldering 2 points (2LD ; 4 points) on 2) Disassemble the Deck-Assy. Pick-up. 3) Make solder land 2 points short (2LD ; 4 points) on 3) Reassemble the Deck-Assy.
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PICK-UP ASS'Y SOLDER LAND 4 POINTS SHORT SOLDER LAND 2 POINTS SHORT <APPLICATION MODEL ; DVR4000> <APPLICATION MODEL ; DVR4500>...
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PICK-UP ASS'Y SOLDER LAND 4 POINTS SHORT SOLDER LAND 2 POINTS SHORT <APPLICATION MODEL ; DVR4000> <APPLICATION MODEL ; DVR4500>...
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PICK-UP ASS'Y SOLDER LAND 4 POINTS SHORT SOLDER LAND 2 POINTS SHORT <APPLICATION MODEL ; DVR4000> <APPLICATION MODEL ; DVR4500>...
Disassembly and Reassembly 3-1-5 Chassis Removal ´ REMOVE 3 SCREWS ˇ REMOVE 3 SCREWS Œ REMOVE 2 CONNECTORS Fig. 3-5 Chassis Removal 3-1-6 VCR Main PCB Removal Œ REMOVE 3 SCREWS When installing the ass'y full deck on the Main PCB, be sure to align the assembly point of mode switch.
Disassembly and Reassembly 3-3 VCR Deck Parts Locations 3-3-1 Top View Œ ´ ˇ ¨ ˆ Ø Fig. 3-8 Top parts Location-1 Œ GEAR FL CAM ´ MOTOR LOADING ASS’Y ˇ LEVER FL ARM ASS’Y ¨ HOLDER FL CASSETTE ASS’Y ˆ...
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Disassembly and Reassembly Œ ´ ˇ ¨ ˆ Ø Ò ∏ ” ’ ” Ô ˝ Fig. 3-9 Top Parts Location-2 ” DISK S REEL Œ FE HEAD ’ LEVER S BRAKE ASS’Y ´ CYLINDER ASS’Y ˝ GEAR IDLE ˇ...
Disassembly and Reassembly 3-4 VCR Deck 3-4-1 Lever FL Door Removal 3-4-2 Holder FL Cassette Ass’y Removal 1) Push the Holder FL Cassette Ass'y Œ about 20mm 1) Pull the Holder FL Cassette Ass'y Œ to the eject in the direction of arrow “A”. position.
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Disassembly and Reassembly 3-4-3 Slider FL Drive, Gear FL Cam Removal 3-4-4 Lever FL Arm Ass’y Removal 1) Push the hole “A” in the direction of arrow “B” 1) Pull the Slider FL Drive Œ to the front direction. use the pin.(about Dia. 2.5) 2) Remove the Slider FL Drive Œ...
Disassembly and Reassembly 3-4-9 Gear Loading Drive, Slider Cam, 3-4-10 Lever Pinch Drive, Lever Load S, T Ass’y Assembly Lever Tension Drive Removal 1) When reinstalling, be sure to align dot of Lever 1) Remove the Lever Pinch Drive Œ, Lever Tension Load T Ass'y Œ...
Disassembly and Reassembly 3-4-11 Lever Tension Ass’y, 3-4-12 Lever Brake S, T Ass’y Removal Band Brake Ass’y Removal 1) Release the Hook [A] and the Hook [B], [C] in the direction of arrow as shown in Fig 3-24. 1) Remove the Lever Brake S Ass'y (Refer to Fig 3- 2) Lift the Lever S, T Brake Ass'y Œ, ´...
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Disassembly and Reassembly 3-4-13 Gear Idle Ass’y Removal 3-4-14 Disk S, T Reel Removal 1) Push the Lever Idle Œ in the direction of arrow 1) Lift the Disk S, T Reel Œ, ´. “A”, “B”. 2) Lift the Lever Idle Œ. Œ...
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Disassembly and Reassembly 3-4-15 Holder Clutch Ass’y Removal 3-4-16 Lever Up Down Ass’y, Gear Center Ass’y Removal 1) Remove the Washer Slit Œ. 1) Remove the 2 hooks in the direction of arrow as 2) Lift the Holder Clutch Ass’y ´. shown Fig.
Disassembly and Reassembly 3-4-17 Guide Cassette Door Removal 3-4-18 Lever Unit Pinch Ass’y, Plate Joint, Spring Pinch Drive Removal 1) Lift the Hook [A]. 2) Rotate the Guide Cassette Door Œ in the direction 1) Lift the Unit Pinch Ass’y Œ. of arrow.
Disassembly and Reassembly 3-4-19 Lever #9 Guide Ass’y Removal 3-4-20 FE Head Removal 1) Remove the Spring #9 Guide Œ. 1) Remove the screw Œ. 2) Lift the Spring #9 Guide Ass’y ´ in the direction 2) Lift the FE Head ´. of arrow “A”.
Disassembly and Reassembly 3-4-21 ACE Head Removal 3-4-22 Slider S, T Ass’y Removal 1) Pull out the FPC from connector of ACE Head 1) Move the Slider S, T Ass’y Œ, ´ to slot, and then Ass’y ´. lift it to remove. (Refer to arrow) 2) Remove the screw Œ.
Disassembly and Reassembly 3-4-23 Plate Ground Deck, Cylinder Ass’y Removal 3-4-24 Belt Pulley Removal 1) Remove the 3 Screws Œ. 1) Remove the Belt Pulley Œ. 2) Lift the Plate Ground Deck ´. Note : Take extreme care not to get grease on Belt 3) Lift the Cylinder Ass’y ˇ.
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Disassembly and Reassembly 3-4-26 Damper Capstan, Motor Capstan Ass’y 3-4-27 How to Eject the Cassette Tape Removal (If the unit does not operate on condition that is inserted into housing ass’y) 1) Remove the Damper Capstan Œ in the direction of arrow.
Disassembly and Reassembly 3-5 The table of cleaning, Lubrication and replacement time about principal parts 1) The replacement time of parts is not life of parts. 2) The table 3-1 is that the VCR Set is in normal condition (normal temperature, normal humidity). The checking period may be changed owing to the condition of use, runtime and environmental conditions.
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Disassembly and Reassembly 3-6 DVD Deck 3-6-1 Tray Disc Removal 1) Insert a Screw Driver Œ into Emergency Hole ´ and push the Slider Housing ˇ in the direction arrow “A”. 2) When the Tray Disc ¨ comes out a little, pull it in the direction arrow “B” by hand. 3) Pull the Tray Disc ¨...
Disassembly and Reassembly 3-6-2 Assy P/U Deck Removal 1) Disconnect DCN2 Œ, DCN3 ´. 2) Lift down the Assy P/U Deck ˇ while simultaneously pushing 2 Hooks ¨, ˆ in the direction of arrow “A”, “B”. ¨ HOOK "A" ˆ HOOK "B"...
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Disassembly and Reassembly 3-6-3 Housing Ass’y Removal 1) Remove Belt Œ. 2) Push the Hook ´ in the direction arrow “A” and lift up Pulley Gear ˇ. 3) Push the Slider Housing ˆ in the direction arrow “B” and lift up the Gear Tray ¨. 4) Lift up the Slider Housing ˆ.
Disassembly and Reassembly 3-6-4 Sub Chassis Removal 1) Remove the Soldering of Motor Feed (+, - wire) Œ. 2) Remove the 4 Screws ´. 3) Lift up the Ass’y Brkt Deck ˇ. ´ 4 SCREWS ˇ ASSY-BRAK DECK Œ SOLDERING OF MOTOR FEED (+, - WIRE) Fig.
4. VCR Alignment and Adjustments 4-1 Reference 1) X-Point (Tracking center) adjustment, “Head switching adjustment” and “NVRAM option setting” can be adjusted with remote control. 2) When replacing the VCR Main PCB Micom (IC601) and NVRAM (IC605 ; EEPROM) be sure to adjust the “Head switching adjustment” and “NVRAM option setting”.
Alignment and Adjustments 4-2 Mechanical Adjustment 4-2-1 Tape Transport System and Adjustment Locations The tape transport system has been adjusted precisely in the factory. Alignment is not necessary except for the following : 1) Noise observed on the screen. 2) Tape damage. 3) Parts replacement in the tape transport system.
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Alignment and Adjustments 4-2-2 Tape Transport System Adjustment When parts are replaced, perform the required adjustments by referring to procedures for the tape transport system. If there are any changes to the tape path, first run a T-120 tape and make sure excessive tape wrinkle does not occur at the tape guides.
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Alignment and Adjustments b. ACE HEAD TILT ADJUSTMENT a. ACE HEAD HEIGHT ADJUSTMENT 1) Playback a blank tape and observe the position of 1) Run the alignment tape (Color bar) in the playback the tape at the lower flange of tape guide. mode.
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Alignment and Adjustments (2) Linearity adjustment (Guide roller S, T adjustment) 1) Playback the Mono Scope alignment tape (SP mode). 2) Observe the video envelope signal on an oscillo- scope (triggered by the video switching pulse). 3) Make sure the video envelope waveform (at its minimum) meets the specification shown in Fig.
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Alignment and Adjustments (3) Check Transitional Operation from RPS to Play (5) Tape Wrinkle Check Check transition from RPS mode to play mode : 1) Run the T-160 (E-180) tape in the playback, FPS, Using a pre-recorded SP tape, make sure the entry RPS and Pause modes and observe tape wrinkle at side of envelope comes to an appropriate steady state each guide.
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Alignment and Adjustments 4) As rotating Disk S Reel Œ clockwise and the 4-2-3 Reel Torque region of adjusting in the Main Base (in shape of slit) clockwise or counterclockwise after inserting 1) The rotation of the capstan motor causes the screw driver in the slit on Main Base.
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Alignment and Adjustments 4-3 Head Switching Point Adjustment 1) Playback the alignment tape. 2) Press the “SW717 (TEST)” button on Function-Timer PCB to set the adjustment mode. (See Fig. 4-2) 3) Press the “SP/SLP” button of remote control then adjustment is operated automatically. (See Fig. 4-1) 4-4 NVRAM Option Setting 1) NVRAM Option is adjusted at production line basically.
7. Electrical Parts List Loc.No Part No Description ; Specification Remark Loc.No Part No Description ; Specification Remark AC92-00972A ASSY PCB-VCR MAIN;DVR-4000,A2/NICAM,A/DUB,SP D692 0402-000127 DIODE-RECTIFIER;1N4002,100V,1A,DO-41,TP IC601 AC09-00030A IC MCU;UPD78F4928,100PIN,QFP,-,16BIT,PLA SYSTEM CONTROL/SERVO PARTS IC604 AC14-12009W IC-RESET;PST572K,TO-92,R59-1766 2.5V C605 2202-000797 C-CERAMIC,MLC-AXIAL;10NF,30%,16V,Y5S,TP, IC605 1103-001149 IC-EEPROM;524C80D41,4KBit,DIP,8P,300MIL, C606...
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Electrical Parts List Loc.No Part No Description ; Specification Remark Loc.No Part No Description ; Specification Remark R685 2001-000812 R-CARBON;5.6KOHM,5%,1/8W,AA,TP,1.8X3.2M C3A04 2401-003107 C-AL;47uF,20%,16V,GP,TP,5x7,5 R688 2001-000563 R-CARBON;27KOHM,5%,1/8W,AA,TP,1.8X3.2MM C3A05 2401-002069 C-AL;33uF,20%,16V,GP,TP,6.3x5,5 R691 2001-000515 R-CARBON;220OHM,5%,1/8W,AA,TP,1.8X3.2MM C3A06 2203-000192 C-CERAMIC,CHIP;100nF,+80-20%,50V,Y5V,TP, R692 2001-000036 R-CARBON;330OHM,5%,1/4W,AA,TP,2.4X6.4MM C3A07 2203-001214 C-CERAMIC,CHIP;8.2nF,10%,50V,X7R,TP,2012 R696 2001-000071...
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Electrical Parts List Loc.No Part No Description ; Specification Remark Loc.No Part No Description ; Specification Remark R343 2007-001001 R-CHIP;510OHM,5%,1/10W,DA,TP,2012 AIC1 1002-001213 IC-D/A CONVERTER;AK4393VF,24BIT,SOP,28P, R344 2007-001001 R-CHIP;510OHM,5%,1/10W,DA,TP,2012 AIC3 AH14-10004R IC;M74HCU04,SOP,TAPE 14P R346 2001-000429 R-CARBON;1KOHM,5%,1/8W,AA,TP,1.8X3.2MM 2702-000106 INDUCTOR-RADIAL;100uH,10%,6.2x7.4mm R3A01 2007-000710 R-CHIP;3.9KOHM,5%,1/10W,DA,TP,2012 AL201 2901-001125 FILTER-EMI ON BOARD;50V,0.5A,-,220pF,7x2 R3A02...
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Electrical Parts List Loc.No Part No Description ; Specification Remark Loc.No Part No Description ; Specification Remark C4M14 2203-001724 C-CERAMIC,CHIP;4700NF,+80-20%,16V,Y5V,TP C6264 2203-001579 C-CERAMIC,CHIP;15nF,10%,50V,NP0,TP,2012 C4M15 2401-000407 C-AL;10uF,20%,16V,GP,TP,3.5x5,2.5 C6E01 2203-000260 C-CERAMIC,CHIP;10nF,10%,50V,X7R,TP,2012 C4M16 2203-000476 C-CERAMIC,CHIP;1000nF,+80-20%,16V,Y5V,TP D6202 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,DO-35, C4M17 2401-003107 C-AL;47uF,20%,16V,GP,TP,5x7,5 D6205 0401-000101 DIODE-SWITCHING;1N4148,100V,200mA,DO-35, C4M18 2203-000192...
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