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Hitachi DV-RF7U Service Manual

Dvd video recorder with video cassette recorder
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TK
No. 0417E
DV-RF7U
SERVICE MANUAL
DO NOT RESELL OR DIVERT IMPROPERLY.
SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT
DVD VIDEO RECORDER with VIDEO CASSETTE RECORDER
July
2004
Digital Media Division,Tokai

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  Summary of Contents for Hitachi DV-RF7U

  • Page 1 No. 0417E DV-RF7U SERVICE MANUAL DO NOT RESELL OR DIVERT IMPROPERLY. SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT DVD VIDEO RECORDER with VIDEO CASSETTE RECORDER July 2004 Digital Media Division,Tokai...
  • Page 2: Table Of Contents

    Table of contents 4-4 VCR Deck Mechanism Disassembly ..4-8 1 Safety Precaution for Repair ... 1-1 (1) Holder FL Cassette Ass'y Removal ..4-8 1-1 Cautions ..........1-1 (2) Lever FL Arm Ass'y Removal ....4-8 1-2 Use of Solder for Repairs ....... 1-1 (3) Lever FL Door Removal ......
  • Page 3 5-3-2 Tape Transport System Adjustment ..5-5 5-3-3 Reel Torque ........5-10 6 Exploded View and Parts List ..6-1 6-1 Exploded Views ........6-1 6-1-1 Cabinet Section ........6-1 6-1-2 Deck Mechanism Section-Top view ..6-2 6-1-3 Deck Mechanism Section-Bottom view 6-3 6-2 Parts List ..........
  • Page 4: Safety Precaution For Repair

    The use of a substitute replacement component which does not have the same safety characteristics as the HITACHI recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product safety is continuously under review and new instructions are issued from time to time.
  • Page 5: Electrostatic Protection Measures

    Safety Precaution for Repair > Electrostatic Protection Measures / Cautions When Handling DVD Drive 1-3 Electrostatic Protection Measures Semiconductor components can be damaged by static electricity charged on clothes, human body, etc. Take great care when handling components to avoid electrostatic damage, and perform servicing in an environment where grounding is complete.
  • Page 6: Notes When Using Service Manual

    Safety Precaution for Repair > Notes When Using Service Manual 1-5 Notes When Using Service Manual (1) Value units used in parts list Certain symbols are indicated as shown below for value units of resistors, capacitors and coils in parts list. When you read them, note the following regular indications: Parts Indication in list Regular indication...
  • Page 7: General Description

    Model DV-RF7U is a multi-drive DVD recorder with VCR: It can record on DVD-RAM, DVD-RW and DVD-R discs and play them back. The DV-RF7U can handle DVD-RW discs for recording and playback in Video format and VR (Video Recording) format, and DVD-RAM discs of both cartridge type (12 cm) and non-cartridge type.
  • Page 8: Disc Information

    General Description > Overview 2-1-2 Disc information DVD-Video DVD-R Disc Playback and Recording · A digital versatile disc (DVD) can contain up to 135 · Once a DVD-R/RW recorded in Video Mode is finalized, minutes of images, 8-language audio and 32 subtitle it becomes DVD-Video.
  • Page 9 U.S. patents and other intellectual property rights owned by Macrovision Corporation and other We recommend using Hitachi Maxell discs as they rights owners. Use of this copyright protection have been confirmed to be compatible with this unit.
  • Page 10: Features

    General Description > Features 2-2 Features DV-RF7U allows you to record and play back high quality digital images on a DVD-RAM/DVD-RW/DVD-R disc. You can also edit digital images on DVD-RAM/DVD-RW discs. (1) High quality digital audio and video recording and playback Record up to about 12-hour images with a double sided 9.4 GB DVD-RAM disc, and up to about 6-...
  • Page 11: Specifications

    General Description > Specifications 2-3 Specifications Power requirements 120 V AC, 60 Hz Power consumption/Standby power (W) 45 Watts/5.1 Watts General Weight Approx. 5.3 kg (11.6 lb) Dimensions Approx. 430 mm (W) x 333 mm (D) x 84 mm (H) [Approx.
  • Page 12: Major Differences From Previous Model

    General Description > Major Differences from Previous Model 2-4 Major Differences from Previous Model : Same as on left Item DV-RF7U DV-RX5000U Appearance OPEN/CLOSE DVD VIDEO RECORDER DV-RX5000U POWER STANDBY REC MODE CHANNEL ERASE D VD - R A M / D VD -R R EC O R D IN G...
  • Page 13: Function Differences From Previous Model

    General Description > Function Differences from Previous Model 2-5 Function Differences from Previous Model : Same as on left Item DV-RF7U DV-RX5000U Recording Digital Recording (DV to DVD) Dubbing (VCR to DVD) Time Slip One Touch Recording (OTR) AUTO recording mode...
  • Page 14: Names Of Parts

    General Description > Names of Parts 2-6 Names of Parts Front Panel DVD DECK CHANNEL BUTTON DVD OPEN/CLOSE BUTTON FRONT PANEL DISPLAY VCR DECK DVD/VCR SELECT BUTTON VCR EJECT BUTTON RECORD BUTTON POWER BUTTON STOP BUTTON PROGRESSIVE BUTTON SKIP/FR BUTTON S-VIDEO INPUT JACK PLAY BUTTON VIDEO INPUT JACK...
  • Page 15: Remote Control

    General Description > Names of Parts Rear Panel S-VIDEO OUT JACK VIDEO OUT JACK AUDIO OUT L/R JACK VIDEO IN JACK DIGITAL AUDIO OUT JACK (OPTICAL) AUDIO IN R/L JACK DIGITAL AUDIO OUT JACK (COAXIAL) RF OUT TO TV JACK COMPONENT VIDEO OUT JACK RF ANTENNA INPUT JACK AUDIO OUT R/L JACK...
  • Page 16 General Description > Names of Parts PLAY Button ENTER Button REVERSE Button RETURN Button MANUAL SKIP Button Returns to a previous menu. Pressing this button during playback will skip to a TV CHANNEL Buttons scene 30 seconds forward. Use this to select a TV channel. TOP MENU/DISC NAVIGATION Button TV VOLUME Buttons Use this to enter the View Recoding list/disk...
  • Page 17: List Of Abbreviations And Terms For Dvd Recorder

    General Description > List of Abbreviations and Terms for DVD Recorder 2-7 List of Abbreviations and Terms for DVD Recorder Index Abbreviation/Term Explanation See Dolby AC3. Black Level Function to correct the gradations on dark portions to make dark scenes easier- to-see.
  • Page 18 General Description > List of Abbreviations and Terms for DVD Recorder Index Abbreviation/Term Explanation JPEG Joint Photographic Expert Group: International standard format for compressing still images. MPEG Moving Picture Experts Group: Standard related to compression of digital video and audio. MPEG2 is a higher standard of MPEG and is applied to video (movie) requiring higher quality.
  • Page 19: Details Of Servicing And Troubleshooting

    Details of Servicing and Troubleshooting 3-1 Details of Servicing 3-1-1 Removing Disc from Faulty Recorder If disc cannot be removed due to fault, disassemble the recorder and remove the disc by the following procedure: 1) Remove the top cover. [See 4-2 (1) for removal procedure.] 2) Remove the front panel.
  • Page 20: Firmware

    Details of Servicing and Troubleshooting > Firmware 3-1-3 Firmware The firmware is occasionally updated to improve performance. Check whether a customer complaint can be solved by updating of firmware: If the complaint can be solved, update the firmware. Information: If any corrections in firmware are made at the factory, information on how to obtain the firmware data and create a disc containing upgraded firmware will be reported in technical bulletin, etc.
  • Page 21 No Power Detected Key Operation or (standby LED OFF) Remote Control Error VCR Main PCB VCR Main PCB Is the measurement of Check power circuit and power within normal value? connector Change fuse F1S01 is normal? XT601 14.318MHz Check the circuit around oscillation is normal? the clock D1S05~07, ZD1S01~2...
  • Page 22 PLAY MODE MECHANISM DOESN'T (VCR Section) VCR Main PCB (VCR Section) VCR Main PCB INOPERATIVE OPERATE IN PLAY MODE TURN POWER ON EE-VIDEO VIDEO MISSING IN EE MODE LOAD A TAPE AND PRESS PLAY BUTTON INSERT THE CASSETTE TAPE RECORDED BY ANOTHER VCR AND PRESS PLAY BUTTON (LOAD)
  • Page 23 RECORD MODE (VCR Section) VCR Main PCB DOESN'T OPERATE PLAY PLAY MODE OPERATION INOPERATIVE CAPSTAN CAPSTAN DOES NOT ROTATION ROTATE LOAD VCR WITH A BLANK TAPE AND PRESS RECORD BUTTON CHANGE TAKE-UP REEL SENSOR (S.T REEL) SUPPLY REEL SENSOR IC601-1.2 (PT601, PT602) EJECT PULSE...
  • Page 24 FAST FORWARD FWD SEARCH DOESN'T (VCR Section) (VCR Section) VCR Main PCB VCR Main PCB DOESN'T OPERATE OPERATE LOAD TAPE AND PRESS F.FWD BUTTON PLAY OPERATION PLAY MODE INOPERATIVE F.FWD PRESS FF INDICATOR IN CHANGE IC601, XT601 KEY ON REMOTE THE DISPLAY CONTROL PRESS F.FWD FOR...
  • Page 25 CASSETTE LOADING VIDEO MISSING IN MECHANISM (VCR Section) VCR Main PCB (VCR Section) VCR Main PCB, Jack PCB EE MODE DOES NOT OPERATE (3xx, 6xx) (8xx) TURN PLACE VCR IN STOP MODE POWER ON AND INSERT A TAPE LINE 2 VIDEO INPUT CHECK CST IN MODE TAPE DETECTED...
  • Page 26 VIDEO MISSING IN VIDEO MISSING IN (VCR Section) VCR Main PCB, Jack PCB (VCR Section) VCR Main PCB RECORD MODE PLAY MODE (3xx, 6xx) (8xx) IC301-21 E-E mode and IC301-26 VIDEO EE MODE VIDEO signal out? VIDEO MISSING IN EE MODE CHECK VIDEO signal out OPERATION PLACE THE VCR IN...
  • Page 27 COLOR MISSING IN COLOR MISSING IN VCR Main PCB (VCR Section) (VCR Section) VCR Main PCB RECORD MODE PLAY MODE (VIDEO IN) FM-ENV VIDEO MISSING IN RECORD RECORD MODE IC301-14 VIDEO MISSING IN PLAY MODE MODE NOTE: XT301 - Always (3.579545MHz) COLOR signal COLOR-MONITOR COLOR-KILLER...
  • Page 28 OSD PICTURE BLUE MISSING IN (VCR Section) (VCR Section) VCR Main PCB VCR Main PCB MISSING STOP MODE SELECT LINE MODE WITHOUT INPUT SIGNAL CHECK IC601-37, 38 CHECK C618,C619 14.318MHz signal out CHECK IC601-37, 38 CHECK C618, C619 14.318MHz out CHECK IC601-52, 53 CHECK C626, R639 AFC signal out...
  • Page 29 AUDIO MISSING IN AUDIO MISSING IN (VCR Section) VCR Main PCB, Jack PCB (VCR Section) VCR Main PCB EE MODE RECORD MODE (VCR Section) (5xx, 6xx) (4xx, 8xx) CHECK VCR STOP MODE AUDIO MISSING IN EE MODE IC801-44, 46, CHECK L1/L2 INPUT CHOICE 56, 58 Audio...
  • Page 30 AUDIO MISSING (VCR Section) VCR Main PCB IN PLAY MODE MONO CHECK AUDIO CHECK AUDIO MISSING MISSING IN EE MODE IN PLAY MODE PLACE THE VCR IN IC501-6 PB MODE IC301-76 CHECK AUDIO SIGNAL AUDIO SIGNAL C336, R322, R348 CHANGE IC501 MONO AUDIO SELECT IC301-10...
  • Page 31 CAPSTAN DOES (VCR Section) VCR Main PCB NO SERVO LOCK (VCR Section) VCR Main PCB NOT ROTATE PLAY CHECK CN604-2 AL15V LINE IN THE POWER BLOCK CHECK IC601-67 CN604-1 C-FG CHECK CN604-3 PC5V LINE PC 5V IN THE POWER BLOCK IC601-76 CTL PULSE PLACE THE VCR...
  • Page 32 DRUM DOES (VCR Section) VCR Main PCB NOT ROTATE CHECK CN604-8 PC12V LINE IN THE POWER BLOCK CN604-3 CHECK 5V LINE CN604-12 CHANGE IC601 CN601-34 PWM OUT 2.5V CHECK CHECK CYLINDER MOTOR R631, R617, R618, C609, C610...
  • Page 33 Tray repeats open/close operation No Analog Audio Output Voltage of AR17 Is (Front PCB) mounted Check mute block Check the soldering of Front PCB and AR31 is lower than 0.6V correctly? (Jack PCB) Is the connection Proper vcc of Check the connection between FJACK2 (Front PCB) and AIC4 (Jack PCB) Check A12VCC line...
  • Page 34 No audio in line input mode or No digital audio out recorded disc playback Checking Check select signal at Check the digital audio Refer to user manual Check pin63, 64 (input select) of IC801 pins 44, 46, 56, 58 of IC801 setting (Jack PCB) Skip setting check (hardware problem)
  • Page 35 S-Video output error VIDEO output error After DVDR is in stop state, Is there Is there After DVDR is in stop state, push the progressive scan key no 'P480' Mark on FLT? no 'P480' Mark on FLT? on the Front panel. push the progressive scan key on the Front panel.
  • Page 36 Component output error Progressive output error CN3-2, 4, 6 on Is there Jack PCB have Check Main PCB After DVDR is in stop state, 'P480' Mark on FLT? normal level? push the progressive scan key on the Front panel. Check the RCA cable Analog signals are Check the connection between input normally...
  • Page 37 Line2 Video Input Error IC801-6 Check the connection between has nomal level? IC801-6 and L2 pin-jack (Jack PCB) IC801-21 IC801-62, 55 of input power has nomal level? Change Main PCB Line2 S-Video Video Input Error CN3-15, 17 Check the connection between have nomal level? CN3-15, 17 and L2 S- video jack (Jack PCB)
  • Page 38: Disassembly And Reassembly

    Disassembly and Reassembly 4-1 Order of Disassembly Refer to the Disassembly Flowchart in Fig. 4-1-1 for the order of removing components. When reassembling components, use the reverse order to removal unless otherwise specified. Reading Disassembly Flowchart: After locating the target component in the flowchart, remove all components of the target in sequence, following the arrows (routes) from the top of flowchart.
  • Page 39: Front Panel

    Disassembly and Reassembly > Disassembly (2) Front Panel 1) Release 3 tabs (A) and 3 tabs (B) in this order. (The tab (A) and the tab (B) should be release at the same time, respectively.) 2) Slowly move the front panel forward to remove it. Caution when reassembling front panel: Reattach the front panel while pushing the cassette door so that the cassette door open/close lever is positioned outside the door.
  • Page 40: Dvd Multi Drive

    Disassembly and Reassembly > Disassembly (4) DVD Multi Drive 1) Disconnect the FFC. *FFC: Flexible flat cable When reconnecting the FFC, insert it into the connector, following the instructions in illustration, and check the connection status. 2) Disconnect the connector. 3) Remove 4 screws [D].
  • Page 41: Front P.c.b

    Disassembly and Reassembly > Disassembly (6) Front P.C.B 1) Remove the FFC [portion a) in the figure]. When reconnecting the FFC, insert it into the connector, following the instructions in illustration, and check the connection status. 2) Remove 2 screws [F] [portion b) in the figure], and then remove the Front P.C.B. 3) Rear Panel 1) Screw [D] 5) Screw [F]...
  • Page 42: Key P.c.b And Vcr Main P.c.b

    Disassembly and Reassembly > Disassembly Cautions when reassembling deck mechanism Check the following when reassembling the deck mechanism: · Set the boss of the mode switch (SW603) on VCR Main P.C.B to the position shown in the figure below. · Make sure that joint 1 gear on the back of deck mechanism is in the position shown in the figure below.
  • Page 43: Vcr Deck Parts Locations

    Disassembly and Reassembly > VCR Deck Parts Locations 4-3 VCR Deck Parts Locations 4-3-1 Top View GEAR FL CAM MOTOR LOADING ASS’Y LEVER FL ARM ASS’Y HOLDER FL CASSETTE ASS’Y LEVER FL DOOR SLIDER FL DRIVE Fig. 4-3-1 Top View of parts Locations-1 FE HEAD CYLINDER ASS'Y ACE HEAD ASS'Y...
  • Page 44: Bottom View

    Disassembly and Reassembly > VCR Deck Parts Locations 4-3-2 Bottom View GEAR JOINT 1 GEAR JOINT 2 BRACKET GEAR MOTOR CAPSTAN ASS'Y LEVER T LOAD ASS'Y GEAR LOADING DRIVE LEVER S LOAD ASS'Y HOLDER CLUTCH ASS'Y BELT PULLEY 10 SLIDER CAM Fig.
  • Page 45: Vcr Deck Mechanism Disassembly

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly 4-4 VCR Deck Mechanism Disassembly (1) Holder FL Cassette Ass'y Removal 1) Pull the Holder FL Cassette Ass'y to the eject position. 2) Pull the Holder FL Cassette Ass'y by holding the Holder FL Cassette Ass'y and Lever FL Cassette-R at the same time to release hooking from Main Base until Boss [A] of Holder FL Cassette Ass'y is removed from Rail [B].
  • Page 46: Lever Fl Door Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (3) Lever FL Door Removal 1) Remove the Slider FL Drive in the direction of arrow. 2) Release the Hook and Remove the Lever FL Door in the direction of arrow “B”. "A"...
  • Page 47: Gear Worm Wheel Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (5) Gear Worm Wheel Removal 1) Remove the Gear Worm Wheel. 1) GEAR WORM WHEEL Fig. 4-4-6 Gear Worm Wheel Removal (6) Cable Flat Removal 1) Remove the Drum connecting part of Cable Flat from the Connector Wafer. 2) Remove the Loading Motor connecting part of Cable Flat from the Connector Wafer.
  • Page 48: Motor Loading Ass'y Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (7) Motor Loading Ass'y Removal 1) Remove the screw. 2) Remove the Motor Loading Ass'y. 2) MOTOR LOADING ASS`Y 1) SCREW Fig.4-4-8 Motor Loading Ass'y Removal (8) Bracket Gear, Gear Joints 2, 1 Removal 1) Remove the screw.
  • Page 49: Gear Loading Drive, Slider Cam, Lever Load S, T Ass'y Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (9) Gear Loading Drive, Slider Cam, Lever Load S, T Ass'y Removal 1) Remove the Belt Pulley. (Refer to Fig. 4-4-28) 2) Remove the Gear Loading Drive after releasing Hook [A] in the direction of arrow HOOK(A) 2) GEAR LOADING DRIVE as shown in the detailed drawing.
  • Page 50: Lever Pinch Drive, Lever Tension Drive Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (10) Lever Pinch Drive, Lever Tension Drive Removal 1) Remove the Lever Pinch Drive and Lever Tension Drive. LEVER PINCH DRIVE LEVER TENSION DRIVE Fig. 4-4-13 Lever Pinch Drive, Lever Tension Drive Removal (11) Lever Tension Ass'y, Band Brake Ass'y Removal 1) Remove the Lever Brake S Ass'y (Refer to Fig...
  • Page 51: Lever Brake S, T Ass'y Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (12) Lever Brake S, T Ass'y Removal 1) Release Hook [A] and Hooks [B], [C] in the directions of arrow. 2) Lift the Lever S, T Brake Ass'y with the spring brake. Note : Take extreme care not to fold or transform Spring Brake 1) HOOK(A)
  • Page 52: Disk S, T Reel Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (14) Disk S, T Reel Removal 1) Lift the Disk S, T Reel. DISK S REEL DISK T REEL Fig. 4-4-17 Disk S, T Reel Removal (15) Holder Clutch Ass'y Removal 1) WASHER SLIT 1) Remove the Washer Slit.
  • Page 53: Lever Up Down Ass'y, Gear Center Ass'y Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (16) Lever Up/Down Ass'y, Gear Center Ass'y Removal 1) Release the 2 hooks in the direction of the arrows as shown Fig. 4-4-19 and lift the Lever Up/ Down Ass'y. 2) Lift the Gear Center Ass'y. Assembly : 1) Insert the Lever Up/Down Ass'y into the rectangular hole in Main Base as shown in Fig 4-4-20.
  • Page 54: Guide Cassette Door Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (17) Guide Cassette Door Removal 1) Lift the Guide Cassette Door slighly Hook [A]. 2) Turn the Guide Cassette Door in the direction of 2) GUIDE CASSETTE DOOR arrow to release Hook [A]. 1) HOOK [A] Note: After reinstalling, turn the Guide Cassette Door,...
  • Page 55: Lever #9 Guide Ass'y Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (19) Lever #9 Guide Ass'y Removal 1) Remove the Spring #9 Guide. 2) Lift the Lever #9 Guide Ass'y in the direction of "A" arrow “A” and “B”. 1) SPRING #9 GUIDE Note : 1) Take extreme care so that no grease adheres to the 2) LEVER #9 GUIDE...
  • Page 56: Ace Head Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (21) ACE Head Removal 1) Pull out the FPC from the connector of ACE Head Ass'y. 2) SCREW 2) Remove the screw. 1) CONNECTOR 3) Lift the ACE Head Ass'y. 3) HEAD ACE ASS`Y Fig.
  • Page 57: Plate Ground Deck, Cylinder Ass'y Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (23) Plate Ground Deck, Cylinder Ass'y Removal 1) Remove the 3 screws. 2) Lift the Plate Ground Deck. 1) 3 SCREWS 3) Lift the Cylinder Ass'y. 2) PLATE GROUND DECK Assembly : 1) Align the 3 holes in the bottom of Cylinder Ass'y with the 3 holes in Main Base, taking care not to drop or knock the Cylinder Ass'y.
  • Page 58: Motor Capstan Ass'y Removal

    Disassembly and Reassembly > VCR Deck Mechanism Disassembly (25) Motor Capstan Ass'y Removal 1) Remove the Hook Capstan after releasing the Hook in the direction of arrow, as shown in 2) 3 SCREWS detailed drawing. (See Fig. 4-4-28) 2) Remove the 3 screws. 3) Remove the Motor Capstan Ass'y.
  • Page 59: The Table Of Cleaning, Lubrication And Replacement Time About Principal Parts

    Disassembly and Reassembly > The table of cleaning, Lubrication and replacement time about principal parts 4-5 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 4-5-1 is that the VCR Set is in normal condition (normal temperature, normal humidity).
  • Page 60: Adjustment

    Adjustment 5-1 Set-up for Adjustment (1) Test equipment/jigs necessary for adjustment 1) Dual-trace oscilloscope 2) Color bar generator 3) Monitor TV (with A/V jacks) 4) Alignment tapes 5) Guide roller screwdriver 6) Blank tape (VHS) (2) Connections of test equipment Connect the equipment as follows when otherwise not specified.
  • Page 61: Vcr Electrical Adjustment

    Adjustment > VCR Electrical Adjustment 5-2 VCR Electrical Adjustment 5-2-1 Reference 1) X-Value (Tracking center) adjustment and “Head switching adjustment” can be performed, using the remote control. (See Fig.5-2-1) 2) When replacing the VCR Main PCB Micom (IC601) and NVRAM (IC603 ; EEPROM), be sure to perform the “Head switching adjustment”...
  • Page 62: Head Switching Adjustment

    Adjustment > VCR Electrical Adjustment 5-2-2 Head Switching Adjustment 1) Play back the alignment tape. 2) Intermittently short-circuit the two Test Points on VCR Main P.C.B while in the adjustment mode. Check that “TEST” appears in the display. (See Fig.5-2-2) 3) While “TEST”...
  • Page 63: Vcr Mechanism Adjustment

    Adjustment > VCR Mechanism Adjustment 5-3 VCR Mechanism Adjustment 5-3-1 Tape Transport System and Adjustment Locations The tape transport system has been adjusted precisely at the factory. Alignment is not necessary except for the following : 1) Noise observed on the screen. 2) Tape damage.
  • Page 64: Tape Transport System Adjustment

    Adjustment > VCR Mechanism Adjustment 5-3-2 Tape Transport System Adjustment When parts are replaced, perform the required adjustments, referring to the procedures for adjusting the tape transport system. If there are any changes to the tape path, first run a T-120 (E- 120) tape and make sure that no excessive tape wrinkle occurs at the guide posts.
  • Page 65 Adjustment > VCR Mechanism Adjustment b. ACE Head Tilt Adjustment 1) Play back a blank tape and observe the position of the tape at the lower flange of #8 guide post. 2) Confirm that there is no curl or wrinkle at the lower flange of #8 guide post as shown in Fig. 5-3- 5 (B).
  • Page 66 Adjustment > VCR Mechanism Adjustment d. ACE Head Position (X-Value) Adjustment 1) Play back the alignment tape (Color bar section). 2) Intermittently short-circuit the two Test Points on VCR Main P.C.B while in the adjustment mode. Check that “TEST” appears in the display. (See Fig.5-2-2) 3) While “TEST”...
  • Page 67 Adjustment > VCR Mechanism Adjustment (2) FM Output Flatness Adjustment (Supply and Take-up Guide Roller Adjustment) 1) Play back the alignment tape. 2) Connect the oscilloscope CH-1 probe to TP3 (ENVELOPE) and CH-2 probe to TP4 (Head S/W- Trigger), and then trigger the oscilloscope from CH-2. (See Fig.
  • Page 68 Adjustment > VCR Mechanism Adjustment (3) Check Transitional Operation from RPS to Play Check transition from RPS mode to play mode: Using a pre-recorded SP tape, make sure the entry side of envelope comes to the appropriate steady state within 3 seconds (as shown in Fig. 5-3-9). If the envelope waveform does not reach specified peak-to-peak amplitude within 3 seconds, adjust as follows: 1) Make sure there is no gap between the roller lower flange of supply guide and the tape.
  • Page 69: Reel Torque

    Adjustment > VCR Mechanism Adjustment 5-3-3 Reel Torque 1) The rotation of the capstan motor causes the holder clutch ass’y to rotate through the belt pulley. 2) The spring wrap PLAY/REV of holder clutch ass’y drives the supply/take-up disk reel through gear idler by rotation of gear center ass’y.
  • Page 70: Exploded View And Parts List

    Exploded View and Parts List 6-1 Exploded Views Note: Components without any numbers in exploded views were assigned as service parts as of the date of issue of this manual. 6-1-1 Cabinet Section DVD Multi drive [Unit replacement] DVD Main PCB (Cylinder) [Circuit board assembly replacement]...
  • Page 71: Deck Mechanism Section-Top View

    6-1-2 Deck Mechanism Section - Top view GREASE:TS-100G [Goandong] OIL:EP-56 [Mitsubishi] T016 T030 T015 T031 T032 T007 T013 T009 W016 T008 T010 T014 T025 T023 T024 T003 T028 T019 W201 T021 T004 T027 T026 T033 T020 T022 T005 W015 T012 T002 T029 T011...
  • Page 72: Deck Mechanism Section-Bottom View

    6-1-3 Deck Mechanism Section - Bottom view GREASE:TS-100G [Goandong] OIL:EP-56 [Mitsubishi] T043 Rear side (Grease point) T035 Rear side (Grease point) T041 Rear side (Grease point) T046 T045 T034 T036 T037 T044 T043 T035 T042 T006 T041 T039 T038 T049 T047 T050 T048...
  • Page 73: Parts List

    6-2 Parts List 6-2-1 Mechanical Parts List SYMBOL SYMBOL P-NO DESCRIPTION P-NO DESCRIPTION MECHANISM SECTION TJ18294 SCREW(M3,L6) TJ18293 SCREW(M3,L12) TJ17971 DVD DRIVE ASSY TJ18292 SCREW(M3,L10) TJ17986 PWB ASSY DVD MAIN TJ18288 SCREW(M5,L14) TJ18386 PWB ASSY JACK W001 TJ18127 SCREW(M3,L10) TJ18385 PWB ASSY MAIN TJ18061...
  • Page 74: Electrical Parts List

    Note: Although some parts in the schematic diagrams have different names 6-2-2 Electrical Parts List from those in the parts list, there is no problem in replacing parts. SYMBOL SYMBOL P-NO DESCRIPTION P-NO DESCRIPTION TJ18141 DIODE DAN202K D704 TJ18344 DIODE 1N4148 TJ18141 DIODE DAN202K DOIC1...
  • Page 75 SYMBOL SYMBOL P-NO DESCRIPTION P-NO DESCRIPTION Q1P107 TJ18145 TRANSISTOR KSC945 Q1P108 TJ18355 TRANSISTOR KSC2328A Q1P109 TJ18355 TRANSISTOR KSC2328A Q1P110 TJ18355 TRANSISTOR KSC2328A Q1S01 TJ18216 TRANSISTOR SPA04N60C3 Q302 TJ18148 TRANSISTOR KSA812 Q303 TJ18181 TRANSISTOR KSC1623 Q304 TJ18148 TRANSISTOR KSA812 Q305 TJ18356 TRANSISTOR KTC3203 Q306 TJ18148...
  • Page 76: Sschematic,Wiring Diagrams

    SCHEMATIC,WIRING DIAGRAMS S-1 Wiring Diagram For schematic Diagram - Resistors are in ohms, 1/8W unless otherwise noted. DVD MAIN P.C.B Special note : Most semiconductor devices are electrostatically sensitive and therefore require the special handling techniques described under the "Electrostatic Protection Measures"...
  • Page 77: S.m.p.s Schematic Diagram

    S-2 S.M.P.S Schematic Diagram (VCR Main P.C.B) Parts with Heat Sink 0.01(630V) 220P(1KV) To POWER 0.01(P) 100nF S - 2...
  • Page 78: Power Schematic Diagram

    S-3 Power Schematic Diagram (VCR Main P.C.B) To Logic DECK MECHANISM 1N5408 To FAN MOTOR From S.M.P.S To MUX Connector (Jack P.C.B)MCON2 From Logic 10HL From/To Hi-Fi/MTS AL5V Hi-Fi/MTS PC9V Logic PC5V PC5V S - 3...
  • Page 79: Logic Schematic Diagram

    S-4 Logic Schematic Diagram (VCR Main P.C.B) 0.01 0.001 /MTS To Power CN02 0.01 0.01 0.01 0.01 0.01 0.0015 0.015 0.01 0.01 0.01 CONNECTOR (JACK) MCON1 0.01 0.01 0.022 0.047 330P CAPSTAN MOTOR 0.01 100P 11AL 0.01 12AL 13AL 14AL 15AL Key P.C.B S - 4...
  • Page 80: A/V Schematic Diagram

    S-5 A/V Schematic Diagram (VCR Main P.C.B) 0.01 0.01 0.01 0.047 0.01 0.047 0.047 0.047 0.01 POWER 0.01 0.01 0.01 CYLINDER 0.01 360P 180P 0.0082 0.0022 0.01 0.01 470P 0.015 0.0018 560P 0.0068 0.01 0.0082 S - 5...
  • Page 81: Hi/Fi/Mts Schematic Diagram

    S-6 Hi-Fi/MTS Schematic Diagram (VCR Main P.C.B) 0.01 0.0047 0.01 0.01 0.01 0.0047 0.01 0.01 POWER S - 6...
  • Page 82: Mux & Tm & A/V Input Schematic Diagram

    S-7 MUX & TM & A/V Input Schematic Diagram (Jack P.C.B) VIDEO OUT MUX CONNECTOR 0.01 To MUX CONNECTOR 330P CONNECTOR 330P VIDEO OUT AUDIO OUT 330P 330P LINE IN 1 FRONT/KEY CONNECTOR (FRONT P.C.B) FJACK2 CONNECTOR CONNECTOR VIDEO OUT LINE OUT S - 7...
  • Page 83: Mux Connector Schematic Diagram

    S-8 MUX Connector Schematic Diagram (Jack P.C.B) To POWER(VCR MAIN) CN01 To LOGIC(VCR MAIN) CN02 To MUX & TM & A/V INPUT To MUX & TM & A/V INPUT S - 8...
  • Page 84: Audio Out Schematic Diagram

    S-9 Audio Out Schematic Diagram (Jack P.C.B) To MUX & TM & A/V INPUT To MUX CONNECTOR 0.0012 0.0012 220P 220P S - 9...
  • Page 85: Video Out Schematic Diagram

    S-10 Video Out Schematic Diagram (Jack P.C.B) MUX CONNECTOR DV-RV7000 Japan only MUX & TM & A/V INPUT 220P (To DVD MAIN) MUX CONNECTOR MUX & TM & A/V INPUT 220P 220P 220P 220P S - 10...
  • Page 86: Front/Key Schematic Diagram

    S-11 Front/Key Schematic Diagram (Front P.C.B) DV JACK PROGRE SSIVE DISK OPEN/ CLOSE POWER AVIO S - 11...
  • Page 87: Ccircuit Board Diagrams

    CIRCUIT BOARD DIAGRAMS C-1 VCR Main P.C.B COMPONENT SIDE C - 1...
  • Page 88 CONDUCTOR SIDE C - 2...
  • Page 89: Jack P.c.b

    C-2 Jack P.C.B COMPONENT SIDE C - 3...
  • Page 90 CONDUCTOR SIDE C - 4...
  • Page 91: Front P.c.b

    C-3 Front P.C.B COMPONENT SIDE CONDUCTOR SIDE C-4 Key P.C.B COMPONENT SIDE CONDUCTOR SIDE C - 5...
  • Page 92: B Block Diagram

    Block Diagram VCR DECK (X-11) DVD MULTI Drive(4.7GB) 1MB SRAM 4MB FLASH 64MB DDR-SDRAM K6F8016U3A-TF55 AM29LV1DL K4H561638D (512Kx16bit) (2Mx16bit) (16M x 16bit x 2ea) RF Out DV-RV7000 TM401 VHF/UHF Japan only TM BLOCK D1/D2 ATAPI VIDEO L/R from Tuner CVBS from Tuner TIC1 MTS IC Video...
  • Page 93 DV-RF7U TK No. 0417E Digital Media Division,Tokai Copyright © Hitachi, Ltd. 2004. All rights reserved.