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CLASS 1 LASER PRODUCT
MVD4540
SERVICE MANUAL
DVD VIDEO PLAYER & VHS VIDEO CASSETTE RECORDER
ORIGINAL MFR'S VERSION A
Design and specifications are subject to change without notice.
IMPORTANT WARNING
CAUTION: DVD PLAYER IS A CLASS 1 LASER PRODUCT. HOWEVER THIS PLAYER USES A VISIBLE LASER BEAM WHICH COULD CAUSE HAZARDOUS RADIATION EXPOSURE IF DIRECTED. BE SURE TO OPERATE THE PLAYER CORRECTLY AS INSTRUCTED. THE FOLLOWING CAUTION LABEL IS LOCATED ON THE REAR PANEL OF THE PLAYER.
CLASS 1 LASER PRODUCT
(Printed on the Rear Panel)
WHEN THIS PLAYER IS PLUGGED TO THE WALL OUTLET, DO NOT PLACE YOUR EYES CLOSE TO THE OPENING OF THE DISC TRAY AND OTHER OPENINGS TO LOOK INTO THE INSIDE OF THIS PLAYER. USE OF CONTROLS OR ADJUSTMENTS OR PERFORMANCE OF PROCEDURES OTHER THAN THOSE SPECIFIED HEREIN MAY RESULT IN HAZARDOUS RADIATION EXPOSURE. DO NOT OPEN COVERS AND DO NOT REPAIR YOURSELF. REFER SERVICING TO QUALIFIED PERSONNEL.
SERVICING NOTICES ON CHECKING
1. KEEP THE NOTICES
As for the places which need special attentions, they are indicated with the labels or seals on the cabinet, chassis and parts. Make sure to keep the indications and notices in the operation manual.
3. PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING
There are parts which use the insulation material such as a tube or tape for safety, or which are assembled in the condition that these do not contact with the printed board. The inside wiring is designed not to get closer to the pyrogenic parts and high voltage parts. Therefore, put these parts in the original positions.
2. USE THE DESIGNATED PARTS
The parts in this equipment have the specific characters of incombustibility and withstand voltage for safety. Therefore, the part which is replaced should be used the part which has the same character. Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark, the designated parts must be used.
4. PERFORM A SAFETY CHECK AFTER SERVICING
Confirm that the screws, parts and wiring which were removed in order to service are put in the original positions, or whether there are the portions which are deteriorated around the serviced places serviced or not. Check the insulation between the antenna terminal or external metal and the AC cord plug blades. And be sure the safety of that.
HOW TO ORDER PARTS
Please include the following informations when you order parts. (Particularly the VERSION LETTER.) 1. MODEL NUMBER and VERSION LETTER The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be found at the end of the SERIAL NUMBER. 2. PART NO. and DESCRIPTION You can find it in your SERVICE MANUAL. A1-1
TAPE REMOVAL METHOD AT NO POWER SUPPLY
1. Remove the Top Cabinet, Front Cabinet and DVD Block and the Fig. 1 below can be seen. (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.) 2. Remove one screw of the Loading Motor from the insert hole for screw driver and remove the Loading Motor. 3. Rotate the Pinch Roller Cam in the direction of the arrow by hand to slacken the Video Tape. (Refer to Fig. 2) 4. Rotate the Clutch Ass'y either of the directions to wind the Video Tape in the Cassette Case. 5. Repeat the above step 3~4. Then take out the Video Cassette from the Deck Chassis. Be careful not to scratch on the tape.
Loading Motor Screw
Capstan DD Unit Pinch Roller Cam
Insert hole for screw driver
Main Cam Clutch Ass'y
Fig. 1
Main Chassis (Front Side)
Fig. 2
DISC REMOVAL METHOD AT NO POWER SUPPLY
1. Remove the Top Cabinet and Front Cabinet. (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.) 2. Rotate the gear of Deck CD section in the direction of the arrow by hand, remove the disc from Deck CD. (Refer to Fig. 3)
Gear
Deck CD
Fig. 3
PARENTAL CONTROL - RATING LEVEL
4-DIGIT SECURITY CODE CANCELLATION
If the stored 4-digit security code in the Rating Level menu needs to be cancelled, please follow the steps below. 1. Connect the set to TV Monitor. 2. Turn on the power, and set to the DVD stop mode. 3. Press the SET UP button to display the DVD menu. 4. Press the SET +/- button to select the "Operation" menu. 5. Press the CH UP/DOWN button to select the Parental Lock, then press the ENTER button. 6. Press the CH UP/DOWN button to select the ON or OFF, then press the ENTER button. 7. Press the STOP button four times on the remote control, then press the ENTER button. The 4-digit security code is cleared. 8. Press the SET UP button to disappear the DVD menu.
A1-2
TABLE OF CONTENTS
IMPORTANT WARNING ............................................................................................................ SERVICING NOTICES ON CHECKING .................................................................................... HOW TO ORDER PARTS .......................................................................................................... TAPE REMOVAL METHOD AT NO POWER SUPPLY ............................................................ DISC REMOVAL METHOD AT NO POWER SUPPLY ............................................................. PARENTAL CONTROL-RATING LEVEL .................................................................................. TABLE OF CONTENTS .............................................................................................................. GENERAL SPECIFICATIONS ................................................................................................... DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS AND P. C. BOARDS ............................................ 2. REMOVAL OF VCR DECK PARTS ................................................................................... 3. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC ............................................... KEY TO ABBREVIATIONS ........................................................................................................ SERVICE MODE LIST ................................................................................................................ PREVENTIVE CHECKS AND SERVICE INTERVALS .............................................................. WHEN REPLACING EEPROM (MEMORY) IC .......................................................................... SERVICING FIXTURES AND TOOLS ....................................................................................... PREPARATION FOR SERVICING ............................................................................................. MECHANICAL ADJUSTMENTS ................................................................................................ ELECTRICAL ADJUSTMENTS .................................................................................................. BLOCK DIAGRAMS DVD .......................................................................................................................................... Y/C/AUDIO/CCD/HEAD AMP ................................................................................................. SYSTEM CONTROL .............................................................................................................. REGULATOR .......................................................................................................................... DISPLAY/OPERATION .......................................................................................................... HI-FI/DEMODULATOR ........................................................................................................... TUNER/JACK ......................................................................................................................... DVD/HDD IN/OUT .................................................................................................................. POWER .................................................................................................................................. PRINTED CIRCUIT BOARDS DVD MT ................................................................................................................................... VCR MT .................................................................................................................................. POWER/OPERATION ............................................................................................................ SCHEMATIC DIAGRAMS READ CHANNEL .................................................................................................................... DSP ......................................................................................................................................... MPEG ...................................................................................................................................... MEMORY ................................................................................................................................ AUDIO/VIDEO ........................................................................................................................ SYSCON1 ............................................................................................................................... Y/C/AUDIO/CCD/HEAD AMP ................................................................................................. VCR SYSCON ......................................................................................................................... TUNER/JACK .......................................................................................................................... REGULATOR ........................................................................................................................... DISPLAY .................................................................................................................................. HI-FI/DEMODULATOR ............................................................................................................ DVD/HDD IN/OUT ................................................................................................................... POWER ................................................................................................................................... OPERATION ............................................................................................................................ INTERCONNECTION DIAGRAM ............................................................................................... WAVEFORMS ............................................................................................................................. MECHANICAL EXPLODED VIEW ............................................................................................. CHASSIS EXPLODED VIEWS ................................................................................................... MECHANICAL REPLACEMENT PARTS LIST ......................................................................... CHASSIS REPLACEMENT PARTS LIST .................................................................................. ELECTRICAL REPLACEMENT PARTS LIST ........................................................................... A1-1 A1-1 A1-1 A1-2 A1-2 A1-2 A2-1 A3-1~A3-5 B1-1, B1-2 B2-1~B2-6 B3-1, B3-2 C1-1, C1-2 C2-1 C3-1, C3-2 C4-1 D1-1 D1-1 D2-1~D2-4 D3-1, D3-2 E-1, E-2 E-3, E-4 E-5, E-6 E-7, E-8 E-9, E-10 E-11, E-12 E-13, E-14 E-15, E-16 E-17, E-18 F-1, F-2 F-3~F-6 F-7, F-8 G-1, G-2 G-3, G-4 G-5, G-6 G-7, G-8 G-9, G-10 G-11, G-12 G-13, G-14 G-15, G-16 G-17, G-18 G-19, G-20 G-21, G-22 G-23, G-24 G-25, G-26 G-27, G-28 G-29, G-30 G-31, G-32 H-1~H-3 I1-1 I2-1, I2-2 J1-1 J2-1 J3-1~J3-3
A2-1
GENERAL SPECIFICATIONS
G-1 G-2 Outline of the product DVD System Color System Disc Disc Diameter Deck Pick up Playback time (Max) DVD VIDEO PLAYER & VHS Player / Recorder NTSC DVD, CD-DA, CD-R/RW 120 mm , 80 mm Front Disc Loding 3 Motors 1-Lens 2-Beams System 135min (4.7GB) 245min (8.5GB) 74min --min Fwd 2-100 times / 4 step (DVD) 4-8 times / 2 step (CD) 2-70 times (DVD) 4-12times (CD) Rev 2-100 times / 4 step (DVD) 4-8 times / 2 step (CD) 2-70 times (DVD) 4-16times (CD) Fwd 1/8-1/2 times 1/7-1/2 times (DVD) Rev --VHS Player / Recorder NTSC Yes No OVD-7 Front 3 4Head 2Head Mono/Yes Yes SP/SLP SP/LP/SLP FF:1'48"/REW:1'48" T-120 SP/LP/SLP = 3x,5x / 7x,9x / 9x,15x 1/10 1/10 US System M 1Tuner US(w/CATV) F-Synth VHF/UHF 75 OHM 2-69,4A,A-5~ A-1,A~I, J~ W, W+1-W+84 45.75 MHz 41.25 MHz 4.50 MHz Yes 3 or 4 ch 66 dBu / 75 Ohm No US-ST Yes 120V 60Hz 20 W at 120V 60Hz 3 W at 120V 60Hz -- W Yes UL FCC DHHS 5oC - 40oC -20oC - 60oC Less then 80% RH 1 V p-p/75 ohm (DVD,VCR) 65 dB(DVD) 500 Lines (DVD) -8 dBm/ 50k ohm(VCR) -8 dBm/ 1k ohm(DVD,VCR) 0.5 V p-p / 75 ohm(DVD) 90dB(DVD), 42dB(VCR at SP)
Disc Loading System Motor DVD 1-Layer CD VIDEO CD
Search speed Actual
Actual Slow speed Actual Actual G-3 VCR System System Video System Hi-Fi STEREO NTSC PB(PAL60Hz) Deck
Heads
DECK Loading System Motor Video Head FM Audio Head
Audio /Control Erase(Full Track Erase) Tape Rec PAL Speed NTSC Play PAL NTSC Fast Forward / Rewind Time (Approx.) at 25oC with Cassette Forward/Reverse Picture Search Frame Advance Slow Speed Broadcasting System Tuner and Receive CH NTSC or PAL-M PAL or SECAM
G-4
Tuning System
System Destination Tuning System Input Impedance CH Coverage Picture(FP) Sound(FS) FP-FS
Intermediate Frequency
G-5
Power
G-6
Regulation
G-7 G-8 G-9
Temperature
Preset CH RF Converter Output Channel Level/Impedance Sound Selector Stereo/Dual TV Sound Tuner Sound Muting Power Source AC DC Power Consumption Stand by Per Year Protector Power Fuse Safety Radiation Laser Operation Storage Output Level S/N Ratio (Weighted) Horizontal Resolution RGB Signal Output Level Audio Signal Input Level Microphone Input Level Line (0dB=0.775Vrms) Output Level Line Digital Output Level S/N Ratio at (Weighted)
Operating Humidity Signal Video Signal
50 dB(VCR) 230 Lines(VCR Mode)
A3-1
GENERAL SPECIFICATIONS
Harmonic Distortion (1KHz) Typical Frequency Response : DVD Mode at DVD DVD Mode at VIDEO CD DVD Mode at CD VCR Mode at SP VCR Mode at LP VCR Mode at SLP Dynamic Range : More than Frequency Response Wow And Flutter : Less than Channel Separation : More than Harmonic Distortion : Less than Menu Type Picture TV Shape Output Sound Audio Out Select Dynamic Range Control Karaoke Vocal Language On-Screen Language Disc Menu Language Audio Language Subtitle Language Display On-Screen Displays Background Screen Saver Operational Pause/Still Parental Lock Title Stop PBC Initial Setup On-Screen Language TV Shape Audio Out Select Open Close No disc Reading Play Still/Pause Stop Prohibit Mark Step Skip+ SkipRandom Repeat A-B Repeat Slow+ SlowSearch+ SearchResume Title No. Chapter No. Track No. Time Sub Title No. Angle No. Audio No. Zoom Enter Exit Bit Rate Memory On Screen Display(VCR) Menu Menu Type Timer Rec Set Auto Repeat On/Off SAP On/Off Surround On/Off CH Set-Up TV/CATV Auto CH Memory Add/Delete Guide CH System Set Up Clock Set Language 0.008% (1KHz) (DVD) , 1.5% (1KHz) (VCR) 4 Hz - 22 KHz 4 Hz - 20 KHz 100Hz - 10 KHz 100Hz - 4 KHz 90dB 20Hz ~20kHz 0.01 %Wrms 60 dB 0.01 Yes Icon Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Character Yes Yes Yes No Yes Yes Yes Yes No Yes Yes (Calendar 12H) Yes
Hi-Fi Audio Signal
G-10
On Screen Display
(DVD)
Menu
A3-2
GENERAL SPECIFICATIONS
No Noise Back Ground Auto Clock Standard Time Daylight Saving Time G-CODE(or SHOWVIEW or PLUSCODE)No. Entry Stereo,Audio Output,SAP Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause/Eject/Tape In/Repeat (Symbol Mark) CH/AV Clock Repeat Pin Code Tape Counter Index Hotel Lock Tape Speed ATR / Manual Tracking Hi-Fi DVD OSD VCR OSD Calendar Timer Events One Touch Recording Max Time OTPB Valid Time Timer Back-up (at Power Off Mode) DISPLAY DISPLAY type Clock/Counter,CH,Timer Rec,OTR, Play Rec,FF(Cue),Rew(Rev),Stop,ATR,Eject VCR DVD CD Clock AM PM Counter VCR DVD CD Counter Remain Play Stop Rec FF / Cue REW /Review Pause/Still OTR T-Rec Chapter TITLE TRACK Repeat Hi-Fi SP LP SLP CH RF Output CH Eject Tape In Unit Glow in Dark Remocon Power Source Voltage(D.C) UM size x pcs Total Keys Keys Power DISPLAY/CALL 1 2 3 4 5 6 7 8 9 0 Input Select UP/CH+DOWN/CHLEFT/ SET- / TRACKINGRIGHT/ SET+ / TRACKING+ VCR/DVD TV/VCR DVD MENU Yes Yes Yes Yes No Yes Yes Yes Yes Yes No Yes Yes No Yes Yes Yes Eng Fre Spa Eng Fre Spa 1990/1/1 ~ 2081/12/31 8 Program/ 1 Month 5 Hours(30,60,90,120,180,240,300) No 5sec Yes LED Module (Green, "Rec" &Timer symbol = Red) No Yes Yes Yes Yes (12h) No Yes Yes (hour:min) Yes (hour:min) Yes (min:sec) No Yes No Yes No No Yes No Yes No No Yes No No No No No Yes No Yes Yes RC-ET No 3V UM-4 x 2 pcs 45 Key Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
G-11 G-12
OSD Language Clock,Timer and Timer Back-up
G-13
Display
G-14
Remote Control
A3-3
GENERAL SPECIFICATIONS
TITLE SET UP MENU/VCR MENU SELECT/ENTER CLEAR/CANCEL RETURN PLAY STOP PAUSE/STILL FF(Cue)/SEARCH+ REW(Review)/SEARCHREC/OTR SKIP+ / INDEX+ SKIP- / INDEXAUDIO / AUDIO SELECT ANGLE/COUNTER RESET SUB TITLE/ATR PLAY MODE/SPEED T-REC CLOCK / COUNTER MEMORY/ZERO RETURN ZOOM REPEAT A-B SLOW(Forward) MARKER OPEN/CLOSE EJECT G-15 Features (DVD) Auto Power Off Parental Lock Video CD Playback MP3 Playback Digital Out Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes No Yes No Dolby Digital PCM DTS MPEG1,MPEG2 (Dolby Digital, MPEG1,MPEG2) Yes Yes Yes Yes Yes Yes No No Yes Yes Yes Yes Yes No Yes No No Yes No Yes Yes No Yes No Yes No No No English /Spanish No Yes Yes No No No No No No No -No Yes (1.2m) Yes (0.9m) No No No No No Yes Yes Yes Yes Yes Yes Yes
Features (VCR)
G-16
Accessories
G-17
Interface
Down Mix Out Self Diagnostic Spatializer (N-2-2) Screen Saver Auto Head Cleaning Auto Tracking HQ (VHS Standard High Quality) Auto Power On, Auto Play, Auto Rewind, Auto Eject Auto Power Off Forward/Reverse Picture Search VIDEO PLUS+(SHOWVIEW,G-CODE) One Touch Playback Auto CH Memory AREA CODE Auto Clock Set Index Search SQPB CATV Energy Star MTS(SAP) CM Skip(30sec x 6 Times) Power On Memory Surround Owner's Manual Language w/Guarantee Card Remote Control Unit Guarantee Card Registration Card Warning Sheet Service Station List Important Tag AC Plug Adapter Quick Set-up Sheet Battery UM size x pcs AC Cord AV Cord 75 Ohm Coaxial Cable S-Video Cable 21pin cable 800 No Sticker Toll Free Insert Sheet Safety Tip Switch Front Power Play Eject (VCR) Stop Rec/OTR Open/Close (DVD) CH +
A3-4
GENERAL SPECIFICATIONS
CH FF/ Search(>>) Rew/Search(<<) Still/Pause Shuttle(Search/REV/FWD) DVD/VCR Main Power SW Attenuator Video/RGB Selector RF Out(Slide SW) Main Power SW Phones Volume Mic Volume Echo Volume Rec/OTR Video In Audio In Video Output Yes Yes Yes No No Yes No No No Yes (3ch/4ch) No No No No No RCA x1(Yellow) RCA x 2(Stereo, White/Red) RCA x1(Yellow) S-Video x 1(DVD Signal Only) Component x1 (RCA 3pin,DVD Signal Only) RCA x 4(Stereo, White/Red) Coaxial x 1 (Digital Audio,DVD Signal Only) Yes (Digital Audio,DVD Signal Only) No No Yes No No No No No No Yes (RED) Yes (RED) No No 430 x 314.5 x 99 4.5 kg( 9.9lbs) 5.5 kg( 12.1lbs) No --- Sets --- / ------Yes Dbule / White No 500 x 430 x 180 As Per BUYER 's Yes Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces 80 cm 1,595 Sets/40' container PS 94V2 or More / DECABROM
Rear
Volume
Terminals
Front Rear
Audio Output Optical Out (Option) Video Input (Option) Audio Input (Option) RF Input / Output Euro Scart AC Inlet LED Power Rec T-Rec TV/VCR DVD VCR Surround Level Meter Approx. W x D x H (mm) Net (Approx.) Gross (Approx.) Master Carton Content Material Dimensions W x D x H(mm) Description of Origin Gift Box Material W/Color Phote Label Dimensions W x D x H(mm) Design Description of Origin Drop Test Height (cm) Container Stuffing Cabinet Front
Indicator
G-18 G-19 G-20
Set Size Weight Carton
G-21
Cabinet Material
A3-5
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS
1-1: TOP CABINET AND FRONT CABINET (Refer to Fig. 1-1) 1. 2. 3. 4. 5. 6. 7. Remove the 5 screws (1). Remove the Top Cabinet in the direction of arrow (A). Disconnect the following connector: (CP651). Unlock the 8 supports (2). Remove the Front Cabinet in the direction of arrow (B). Remove the 3 screws (3). Remove the Operation PCB in the direction of arrow (C).
Top Cabinet
1-3: VCR DECK (Refer to Fig. 1-3) 1. Unlock the 2 supports (1) and remove the Top Holder. 2. Remove the 3 screws (2). 3. Disconnect the following connectors: (CP101, CP102, CP103 and CP3001). 4. Remove the AC Head Cover and VCR Deck in the direction of arrow.
(2) (2) (2)
AC Head Cover VCR Deck
(1) (1)
Top Holder
(1) (1) (1)
(1)
(A)
(1)
Front Cabinet (B)
(2) (2) (2) (2) (2) (2) (2)
(3)
(3) (3)
Fig. 1-3
Operation PCB
(C)
1-4: VCR PCB (Refer to Fig. 1-4) Fig. 1-1 1. Remove the screw (1). 2. Remove the 7 screws (2). 3. Disconnect the following connectors: (CP1701, CP8001 and CP8002). 4. Remove the VCR PCB in the direction of arrow.
(2)
1-2: FLAP (Refer to Fig. 1-2) 1. Open Flap to 90° and flex in direction of arrow (A), at the same time slide in direction of arrow (B). 2. Then lift in direction of arrow (C).
(2)
(A)
Upper side
(C)
VCR PCB
(1) (B)
(2) (2) (2) (2) (2) (2)
Flap
Bottom side
Fig. 1-2 Fig. 1-4
B1-1
DISASSEMBLY INSTRUCTIONS
1-5: DECK CD AND DVD PCB (Refer to Fig. 1-5) 1. Make the short circuit on the position as shown Fig. 1-5 using a soldering. If you remove the Deck CD with no soldering, the Laser may be damaged. 2. Disconnect the following connector: (CP503). 3. Remove the 4 screws (1). 4. Remove the Deck Angle in the direction of arrow (A). 5. Remove the 2 screws (2). 6. Remove the Front-DVD Shield in the direction of arrow (B). 7. Remove the 4 screws (3). 8. Disconnect the following connectors: (CP2601, CP2602 and CP2603). 9. Remove the Deck CD in the direction of arrow (C). 10. Remove the 4 screws (4). 11. Remove the DVD PCB in the direction of arrow (D).
Pick Up PCB
1-6: POWER PCB (Refer to Fig. 1-6) 1. Remove the 3 screws (1). 2. Remove the Power PCB in the direction of arrow.
(1) (1)
(1)
Power PCB
Bottom Plate
Fig. 1-6
(3) (3)
Deck CD
(3) (3) (1) (1)
(C) Deck Angle Make the sort circuit using a soldering.
Front-DVD Shield
(1)
(B) (D)
(1)
(2) (2) (4) (4) (4) (4)
DVD PCB
(A)
Fig. 1-5 NOTE When the installation of the Deck CD, remove all the soldering on the short circuit position after the connection of Pick Up PCB and DVD PCB connector.
B1-2
DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF VCR DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1) 1. Extend the 2 supports (1). 2. Slide the 2 supports (2) and remove the Top Bracket. NOTE 1. After the installation of the Top Bracket, bend the support (1) so that the Top Bracket is fixed.
Locker R Top Bracket Cassette Side R Check if these positions are locked.
NOTE 1. In case of the Locker R installation, check if the two positions of Fig.2-3-B are correctly locked. 2. When you install the Cassette Side R, be sure to move the Locker R after installing.
(1)
(1)
Top Bracket
(2)
Fig. 2-3-B
(2)
Main Chassis
2-4: LINK UNIT (Refer to Fig. 2-4)
Main Chassis
Fig. 2-1 2-2: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-2) 1. Move the Cassette Holder Ass'y to the front side. 2. Push the Locker R to remove the Cassette Side R. 3. Remove the Cassette Side L.
Cassette Side R Main Chassis Locker R
1. Set the Link Unit to the Eject position. 2. Unlock the support (1). 3. Remove the (A) side of the Link Unit first, then remove the (B) side.
Main Chassis
Link Unit
(A)
(B) Link Unit
(1)
Main Chassis
Fig. 2-4
Link Unit Cassette Side L Main Chassis
2-5: LINK LEVER/FLAP LEVER (Refer to Fig. 2-5) 1. Extend the support (1). 2. Remove the Link Lever. 3. Remove the Flap Lever.
Fig. 2-2 2-3: CASSETTE SIDE L/R (Refer to Fig. 2-3-A) 1. Remove the Locker Spring. 2. Unlock the 4 supports (1) and then remove the Cassette Side L/R. 3. Unlock the support (2) and then remove the Locker R.
Flap Lever Locker Spring
(1)
(1) (1) (2)
Cassette Holder Link Lever
Locker R
Fig. 2-5
(1) (1)
Cassette Side R
Cassette Side L
Fig. 2-3-A B2-1
DISASSEMBLY INSTRUCTIONS
2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A) 1. Remove the screw (1). 2. Remove the Loading Motor. 3. Remove the Worm.
Tension Arm Ass'y
Loading Motor
Fig. 2-7-A
(1)
Worm Main Chassis
Tension Connect
(1) (3)
Tension Band
Tension Spring Tension Arm Ass'y · Screw Torque: 3 ± 0.5kgf·cm
(1)
Tension Holder
Fig. 2-6-A
NOTE 1. In case of the Worm installation, check if the value of the Fig. 2-6-B is correct. 2. In case of the Loading Motor installation, hook the wire on the Cassette Opener as shown Fig. 2-6-C.
(2) (4)
Fig. 2-7-B
19.2 ± 0.1mm
NOTE 1. In case of the Tension Band installation, note the direction of the installation. (Refer to Fig. 2-7-C) 2. In case of the Tension Band installation, install correctly as Fig. 2-7-D. 3. In case of the Tension Connect installation, install as the circled section of Fig. 2-7-E.
Safety surface for pressing of the insert.
Fig. 2-6-B
Tension Band Tension Connect
Loading Motor
Fig. 2-7-C
Cassette Opener
[OK]
Tension Connect Tension Band
Fig. 2-6-C [NG] 2-7: TENSION ASS'Y (Refer to Fig. 2-7-B) 1. Turn the Pinch Roller Cam clockwise so that the Tension Holder hook is set to the position of Fig. 2-7-A to move the Tension Arm Ass'y. 2. Remove the Tension Spring. 3. Unlock the 2 supports (1) and remove the Tension Band. 4. Unlock the support (2) and remove the Tension Arm Ass'y. 5. Unlock the support (3) and remove the Tension Connect. 6. Float the hook (4) and turn it clockwise then remove the Tension Holder. B2-2 Fig. 2-7-D
Tension Connect Tension Band
Tension Connect
Main Chassis
Fig. 2-7-E
DISASSEMBLY INSTRUCTIONS
2-8: T BRAKE ARM/T BRAKE BAND (Refer to Fig. 2-8-A) 1. Remove the T Brake Spring. 2. Turn the T Brake Arm clockwise and bend the hook section to remove it. 3. Unlock the 2 supports (1) and remove the T Brake Band.
T Brake Band Idler Gear Idler Arm Ass'y S Reel (B)
(A)
T Reel
Hook section
(1)
T Brake Arm T Brake Spring (A)
(1) (1)
(1)
Fig. 2-8-A NOTE 1. In case of the T Brake Band installation, install correctly as Fig. 2-8-B. [OK]
T Brake Band T Brake Arm
Fig. 2-9-A NOTE 1. In case of the S Reel and T Reel installation, check if the correct parts are installed. (Refer to Fig. 2-9-B) 2. In case of the Idler Arm Ass'y installation, install correctly as Fig. 2-9-C. And also set it so that the section "B" of Fig. 2-9-A is placed under the Main Chassis tab.
[NG]
T Brake Band
T Brake Arm
Fig. 2-8-B 2-9: S REEL/T REEL/IDLER ARM ASS'Y/IDLER GEAR (Refer to Fig. 2-9-A) 1. Remove the S Reel and T Reel. 2. Remove the 2 Polyslider Washers (1). 3. Remove the Idler Arm Ass'y and Idler Gear. NOTE 1. Take care not to damage the gears of the S Reel and T Reel. 2. The Polyslider Washer may be remained on the back of the reel. 3. Take care not to damage the shaft. 4. Do not touch the section "A" of S Reel and T Reel. (Use gloves.) (Refer to Fig. 2-9-A) Do not adhere the stains on it. 5. When you install the reel, clean the shaft and grease it (FG-84M). (If you do not grease, noise may be heard in FF/REW mode.) 6. After installing the reel, adjust the height of the reel. (Refer to MECHANICAL ADJUSTMENT) [NG]
Idler Arm Ass'y Clutch Gear Big Hole (S Reel) Small Hole (T Reel)
Fig. 2-9-B
[OK]
Clutch Gear Idler Arm Ass'y
Fig. 2-9-C
B2-3
DISASSEMBLY INSTRUCTIONS
2-10: CASSETTE OPENER/PINCH ROLLER BLOCK/ P5 ARM ASS'Y (Refer to Fig. 2-10-A) 1. Unlock the support (1) and remove the Cassette Opener. 2. Remove the Pinch Roller Block and P5 Arm Ass'y.
(1)
Cassette Opener Spring Position
Fig. 2-11-B
Pinch Roller Block
2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12) 1. Remove the screw (1). 2. Remove the FE Head.
(1)
P5 Arm Ass'y
Main Chassis FE Head
Fig. 2-10-A NOTE 1. Do not touch the Pinch Roller. (Use gloves.) 2. In case of the Pinch Roller Block and the Pinch Roller Cam installation, install correctly as Fig. 2-10-B.
Pinch Roller Block
Can be seen the hole of the Pinch Roller Cam.
· Screw Torque: 5 ± 0.5kgf·cm · The FE Head is not installed on the Video Cassette Player.
Fig. 2-12
P5 Arm Ass'y
2-13: AHC ASS'Y/CYLINDER UNIT ASS'Y (Refer to Fig. 2-13) 1. 2. 3. 4. Unlock the support (1) and remove the AHC Ass'y. Disconnect the following connector: (CD2001) Remove the 3 screws (2). Remove the Cylinder Unit Ass'y.
Can be seen the hole of the Main Cam.
Fig. 2-10-B
NOTE 2-11: A/C HEAD (Refer to Fig. 2-11-A) 1. 2. 3. 4. Remove Remove Remove Remove the screw (1). the A/C Head Base. the 3 screws (2). the A/C Head and A/C Head Spring. 1. When you install the Cylinder Unit Ass'y, tighten the screws from (1) to (3) in order while pulling the Ass'y toward the left front direction.
NOTE 1. Do not touch the A/C Head. (Use gloves.) 2. When you install the A/C Head Spring, install as shown in Fig. 2-11-B. 3. When you install the A/C Head, tighten the screw (1) first, then tighten the screw (2), finally tighten the screw (3).
(1) (3) Cylinder Unit Ass'y
AHC Ass'y
(1)
(2) (2)
(2)
(2)
A/C Head (2) (1)
(3)
(2) (2)
(2)
A/C Head Spring · Screw Torque: 3 ± 0.5kgf·cm
Fig. 2-13
(1)
A/C Head Base · Screw Torque: 5 ± 0.5kgf·cm (Screw (1))
Fig. 2-11-A B2-4
DISASSEMBLY INSTRUCTIONS
2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14-A) 1. Remove the Capstan Belt. 2. Remove the 3 screws (1). 3. Remove the Capstan DD Unit. 2-15: MAIN CAM/PINCH ROLLER CAM/JOINT GEAR (Refer to Fig. 2-15-A) 1. Remove the E-Ring (1), then remove the Main Cam. 2. Remove the E-Ring (2), then remove the Pinch Roller Cam and Joint Gear.
(1)
Capstan Belt Capstan DD Unit Main Cam
(2)
Pinch Roller Cam
Joint Gear
(1)
· Screw Torque: 4 ± 0.5kgf·cm
Fig. 2-15-A
(1) (1)
Fig. 2-14-A
NOTE 1. In case of the Pinch Roller Cam and Main Cam installation, install them as the circled section of Fig. 215-B so that the each markers are met. (Refer to Fig. 2-15-B)
NOTE 1. In case of the Capstan DD Unit installation, apply the silicon bond (TSE3843-W) on the position Fig. 2-14-B correctly. (If no silicon bond applied, abnormal noise will be heard on the deck operation.) (Refer to Fig. 2-14-B, C)
Applied position of silicon bond
Pinch Roller Cam
Marker
Be careful not to apply the silicon bond to the Pinch Roller.
Main Cam
Fig. 2-15-B Fig. 2-14-B 2-16: LOADING GEAR S/T UNIT (Refer to Fig. 2-16-A) 1. Remove the E-Ring (1) and remove the Main Loading Gear. 2. Remove the Main Rod, Tension Lever, Loading Arm S Unit and Loading Arm T Unit.
(1)
Main Rod Capstan DD Unit Main Loading Gear
Silicon Bond Main Chassis
Fig. 2-14-C
Loading Arm T Unit Tension Lever
Loading Arm S Unit
Fig. 2-16-A B2-5
DISASSEMBLY INSTRUCTIONS
NOTE 1. When you install the Loading Arm S Unit, Loading Arm T Unit and Main Loading Gear, align each marker. (Refer to Fig. 2-16-B)
Marker
2-18: CASSETTE GUIDE POST/INCLINED BASE S/T UNIT/P4 CAP (Refer to Fig. 2-18-A) 1. Remove the P4 Cap. 2. Unlock the support (1) and remove the Cassette Guide Post. 3. Remove the Inclined Base S Unit and Inclined Base T Unit.
Cassette Guide Post
Main Loading Gear Marker
(1)
Inclined Base S Unit
Inclined Base T Unit
Loading Arm T Unit
Loading Arm S Unit
P4 Cap
Fig. 2-16-B 2-17: CLUTCH ASS'Y/RING SPRING/CLUTCH LEVER/ CLUTCH GEAR (Refer to Fig. 2-17-A) 1. 2. 3. 4. Remove the Polyslider Washer (1). Remove the Clutch Ass'y and Ring Spring. Remove the Clutch Lever. Remove the Coupling Gear, Coupling Spring and Clutch Gear.
(1)
Clutch Ass'y
Fig. 2-18-A NOTE 1. Do not touch the roller of Guide Roller. 2. In case of the P4 Cap installation, install it with parallel for "A" and "B" of Fig. 2-18-B. 3. In case of the Cassette Guide Post installation, install correctly as the circled section of Fig. 2-18-C.
"A" "B"
Ring Spring Coupling Gear Coupling Spring Clutch Gear
Clutch Lever
P4 Cap
Cassette Opener
Fig. 2-17-A NOTE 1. In case of the Clutch Ass'y installation, install it with inserting the spring of the Clutch Ass'y into the dent of the Coupling Gear. (Refer to Fig. 2-17-B) [OK]
Cassette Guide Post
Fig. 2-18-B
Clutch Ass'y
[NG]
Cassette Guide Post
Coupling Gear
Fig. 2-17-B B2-6
Fig. 2-18-C
DISASSEMBLY INSTRUCTIONS
3. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC
REMOVAL 1. Put the Masking Tape (cotton tape) around the Flat Package IC to protect other parts from any damage. (Refer to Fig. 3-1.) NOTE Masking is carried out on all the parts located within 10 mm distance from IC leads.
Blower type IC desoldering machine
3. When IC starts moving back and forth easily after desoldering completely, pickup the corner of the IC using a tweezers and remove the IC by moving with the IC desoldering machine. (Refer to Fig. 3-3.) NOTE Some ICs on the PCB are affixed with glue, so be careful not to break or damage the foil of each IC leads or solder lands under the IC when removing it.
Masking Tape (Cotton Tape)
IC
Tweezers
Fig. 3-1
IC
2. Heat the IC leads using a blower type IC desoldering machine. (Refer to Fig. 3-2.) NOTE Do not add the rotating and the back and forth directions force on the IC, until IC can move back and forth easily after desoldering the IC leads completely.
Fig. 3-3 4. Peel off the Masking Tape. 5. Absorb the solder left on the pattern using the Braided Shield Wire. (Refer to Fig. 3-4.) NOTE Do not move the Braided Shield Wire in the vertical direction towards the IC pattern.
Blower type IC desoldering machine
Braided Shield Wire
Soldering Iron
IC pattern IC
Fig. 3-4
Fig. 3-2
B3-1
DISASSEMBLY INSTRUCTIONS
INSTALLATION 1. Take care of the polarity of new IC and then install the new IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily. (Refer to Fig. 3-5.) 4. When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 3-8.)
Thin-tip Soldering Iron
IC
Soldering Iron
Fig. 3-8 5. Finally, confirm the soldering status on four sides of the IC using a magnifying glass. Confirm that no abnormality is found on the soldering position and installation position of the parts around the IC. If some abnormality is found, correct by resoldering. NOTE When the IC leads are bent during soldering and/or repairing, do not repair the bending of leads. If the bending of leads are repaired, the pattern may be damaged. So, be always sure to replace the IC in this case.
Solder temporarily
Solder temporarily
Fig. 3-5 2. Supply the solder from the upper position of IC leads sliding to the lower position of the IC leads. (Refer to Fig. 3-6.)
Solder
Soldering Iron
IC
Supply soldering from upper position to lower position
Fig. 3-6 3. Absorb the solder left on the lead using the Braided Shield Wire. (Refer to Fig. 3-7.) NOTE Do not absorb the solder to excess.
Soldering Iron IC
Braided Shield Wire
Fig. 3-7
B3-2
KEY TO ABBREVIATIONS
A A/C ACC AE AFC AFT AFT DET AGC AMP ANT A.PB APC ASSíY AT AUTO A/V B BGP BOT BPF BRAKE SOL BUFF B/W C C CASE CAP CARR CH CLK CLOCK (SY-SE) COMB CONV CPM CTL CYL CYL-M CYL SENS D DATA (SY-CE) dB DC DD Unit DEMOD DET DEV E E EF EMPH ENC ENV EOT EQ EXT F F FBC FE FF FG FL SW FM FSC FWD G GEN GND H H.P.F : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Audio/Control Automatic Color Control Audio Erase Automatic Frequency Control Automatic Fine Tuning Automatic Fine Tuning Detect Automatic Gain Control Amplifier Antenna Audio Playback Automatic Phase Control Assembly All Time Automatic Audio/Video Burst Gate Pulse Beginning of Tape Bandpass Filter Brake Solenoid Buffer Black and White Capacitance, Collector Cassette Capstan Carrier Channel Clock Clock (Syscon to Servo) Combination, Comb Filter Converter Capstan Motor Control Cylinder Cylinder-Motor Cylinder-Sensor Data (Syscon to Servo) Decibel Direct Current Direct Drive Motor Unit Demodulator Detector Deviation Emitter Emitter Follower Emphasis Encoder Envelope End of Tape Equalizer External Fuse Feed Back Clamp Full Erase Fast Forward, Flipflop Frequency Generator Front Loading Switch Frequency Modulation Frequency Sub Carrier Forward Generator Ground High Pass Filter I H.SW Hz IC IF IND INV KIL L LED LIMIT AMP LM, LDM LP L.P.F LUMI. M MAX MINI MIX MM MOD MPX MS SW NC NR OSC OPE PB PB CTL PB-C PB-Y PCB P. CON PD PG P-P R REC REC-C REC-Y REEL BRK REEL S REF REG REW REV, RVS RF RMC RY S. CLK S. COM S. DATA SEG SEL SENS SER SI SIF SO SOL SP STB SW : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : Head Switch Hertz Integrated Circuit Intermediate Frequency Indicator Inverter Killer Left Light Emitting Diode Limiter Amplifier Loading Motor Long Play Low Pass Filter Luminance Motor Maximum Minimum Mixer, mixing Monostable Multivibrator Modulator, Modulation Multiplexer, Multiplex Mecha State Switch Non Connection Noise Reduction Oscillator Operation Playback Playback Control Playback-Chrominance Playback-Luminance Printed Circuit Board Power Control Phase Detector Pulse Generator Peak-to Peak Right Recording Recording-Chrominance Recording-Luminance Reel Brake Reel Sensor Reference Regulated, Regulator Rewind Reverse Radio Frequency Remote Control Relay Serial Clock Sensor Common Serial Data Segment Select, Selector Sensor Search Mode Serial Input Sound Intermediate Frequency Serial Output Solenoid Standard Play Serial Strobe Switch
K L
M
N O P
R
S
C1-1
KEY TO ABBREVIATIONS
S SYNC SYNC SEP T TR TRAC TRICK PB TP U UNREG V V VCO VIF VP V.PB VR V.REC VSF VSR VSS V-SYNC VT X XíTAL Y Y/C : : : : : : : : : : : : : : : : : : : : : Synchronization Sync Separator, Separation Transistor Tracking Trick Playback Test Point Unregulated Volt Voltage Controlled Oscillator Video Intermediate Frequency Vertical Pulse, Voltage Display Video Playback Variable Resistor Video Recording Visual Search Fast Forward Visual Search Rewind Voltage Super Source Vertical-Synchronization Voltage Tuning Crystal Luminance/Chrominance
C1-2
SERVICE MODE LIST
This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter to the SERVICE MODE function, press and hold both buttons simultaneously on the main unit or on the main unit and on the remote control for more than a standard time (second). Set Key Set Key Standard Time (seconds) Operations PLAY/REC total hours are displayed on the screen. Refer to the "PREVENTIVE CHECKS AND SERVICE INTERVALS" (CONFIRMATION OF HOURS USED). Can be checked of the INITIAL DATA of MEMORY IC. Refer to the "WHEN REPLACING EEPROM (MEMORY) IC". Adjust the PG SHIFTER automatically. Refer to the "ELECTRICAL ADJUSTMENT" (PG SHIFTER). Initialization of the factory on VCR. NOTE: Do not use this for the normal servicing. If you set a factory initialization, the memories are reset such as the clock setting, the channel setting, and PLAY/REC total hours. VCR operation mode at no connection of DVD. Refer to the "PREPARATION FOR SERVICING" NOTE: Although the DVD is connected, the DVD mode cannot be selected.
CH UP
FF
2
CH UP
STOP
2
CH UP
PLAY
2
CH DOWN
POWER
2
Set Key
Remocon Key
Standard Time (seconds)
Operations Initialization of the factory on DVD. NOTE: Do not use this for the normal servicing. The function will only work without the setting of DVD disc at DVD mode. While pressing the Remocon Key for more than the Standard Time, press the Set Key simultaneously.
REC
8
2
Method Press the ATR button on the remote control for more than 2 seconds during PLAY. Make the short circuit between the test point of SERVICE and the GND.
Operations Adjusting of the Tracking to the center position. Refer to the "MECHANICAL ADJUSTMENT" (GUIDE ROLLER) and "ELECTRICAL ADJUSTMENT" (PG SHIFTER). The BOT, EOT, and the Reel Sensor do not work and the VCR deck can be operated without a cassette tape. Refer to the "PREPARATION FOR SERVICING"
C2-1
PREVENTIVE CHECKS AND SERVICE INTERVALS
The following standard table depends on environmental conditions and usage. Parts replacing time does not mean the life span for individual parts. Also, long term storage or misuse may cause transformation and aging of rubber parts. The following list means standard hours, so the checking hours depends on the conditions. Time Parts Name Audio Control Head Full Erase Head (Recorder only) Capstan Belt Pinch Roller Capstan DD Unit Loading Motor Tension Band T Brake Band Clutch Ass'y Idler Arm Ass'y Capstan Shaft Tape Running Guide Post Cylinder Unit : Clean : Check it and if necessary, replace it. Replace when rolling becomes abnormal. Clean the Head 500 hours 1,000 hours 1,500 hours 2,000 hours 2,500 hours Notes Clean those parts in contact with the tape.
Clean the rubber, and parts which the rubber touches.
CONFIRMATION OF HOURS USED
PLAY/REC total hours can be checked on the screen. Total hours are displayed in 16 system of notation. NOTE: If you set a factory initialization, the total hours is reset to "0". 1. 2. 3. 4. Connect the set to TV Monitor. Turn on the POWER. Press both CH UP button on the set and the FF button on the set for more than 2 seconds. After the confirmation of using hours, turn off the power.
INIT 00 0E PLAY/REC 0000
Initial setting content of MEMORY IC. PLAY/REC total hours. = (16 x 16 x 16 x thousands digit value) + (16 x 16 x hundreds digit value) + (16 x tens digit value) + (ones digit value)
C3-1
PREVENTIVE CHECKS AND SERVICE INTERVALS
CLEANING
NOTE After cleaning the heads with isopropyl alcohol, do not run a tape until the heads dry completely. If the heads are not completely dry and alcohol gets on the tape, damage may occur. 1. AUDIO CONTROL HEAD Clean the Audio Control Head with the cotton stick soaked by alcohol. Clean the full erase head in the same manner. (Refer to the figure below.) 2. TAPE RUNNING SYSTEM When cleaning the tape transport system, use the gauze moistened with isopropyl alcohol. 3. CYLINDER Wrap a piece of chamois around your finger. Dip it in isopropyl alcohol. Hold it to the cylinder head softly. Turn the cylinder head counterclockwise to clean it (in the direction of the arrow). (Refer to the figure below.) NOTE Do not exert force against the cylinder head. Do not move the chamois upward or downward on the head. Use the chamois one by one.
Cylinder Head Audio Control Head
C3-2
WHEN REPLACING EEPROM (MEMORY) IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1. NOTE: No need setting for after INI 2E. INI 00 10 20 +0 0E AF 29 +1 00 97 01 +2 D8 95 15 +3 10 8A 77 +4 64 B0 61 +5 64 55 31 +6 4A 31 29 +7 E6 04 04 Table 1 1. Connect the set to TV Monitor. 2. Turn on the POWER. 3. Press both CH UP button on the set and the FF button on the set for more than 2 seconds. ADDRESS and DATA will appear on TV Monitor as Fig 1.
ADDRESS DATA
+8 0B 88 00
+9 2F A5 00
+A 86 9F 00
+B 2F 3A 00
+C 0A 00 A2
+D 08 10 B0
+E 0A BF 02
+F 0F 00 ---
INIT 00 0E PLAY/REC 0000
Fig. 1 4. ADDRESS is now selected and should "blink". Using the SET + or - button on the remote, step through the ADDRESS until required ADDRESS to be changed is reached. 5. Press ENTER to select DATA. When DATA is selected, it will "blink". 6. Again, step through the DATA using SET + or - button until required DATA value has been selected. 7. Pressing ENTER will take you back to ADDRESS for further selection if necessary. 8. Repeat steps 4 to 7 until all data has been checked. 9. When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input. The unit will now have the correct DATA for the new MEMORY IC.
C4-1
SERVICING FIXTURES AND TOOLS
(For 2 heads model) VHS Alignment Tape JG001 (VN2S-LI63) JG001A (VN2S-CO13) JG001Q (VN2S-LI63H) JG001T (VN2S-X63) (For 4 heads model) VHS Alignment Tape JG001B (VN1S-LI63) JG001I (VN1S-CO13) JG001P (VN1S-LI63H) JG001S (VN1S-X63)
JG002B Adapter JG002E Dial Torque Gauge (10~90gf·cm) JG002F (60~600gf·cm)
JG005 Post Adjustment Screwdriver Part No. SV-TG0-030-000 (small)
JG153 X Value Adjustment Screwdriver
JG022 Master Plane
JG024A Reel Disk Height Adjustment Jig
JG100A Torque Tape (VHT-063)
JG154 Cable
Tentelometer
Ref. No. JG001 JG001A JG001Q JG001T JG001B JG001I JG001P JG001S JG002B JG002E JG002F JG005 JG153 JG022 JG024A JG100A JG154
Part No. APJG001000 APJG001A00 APJG001Q00 APJG001T00 APJG001B00 APJG001I00 APJG001P00 APJG001S00 APJG002B00 APJG002E00 APJG002F00 APJG005000 APJG153000 APJG022000 APJG024A00 APJG100A00 APJG154000
Parts Name VHS Alignment Tape VHS Alignment Tape VHS Alignment Tape VHS Alignment Tape VHS Alignment Tape VHS Alignment Tape VHS Alignment Tape VHS Alignment Tape Adapter Dial Torque Gauge (10~90gf·cm) Dial Torque Gauge (60~600gf·cm) Post Adjustment Screwdriver X Value Adjustment Screwdriver Master Plane Reel Disk Height Adjustment Jig Torque Tape (VHT-063) Cable
Remarks Monoscope, 6KHz (For 2 heads model) Color Bar, 1KHz (For 2 heads model) Hi-Fi Audio (For 2 heads model) X Value Adjustment (For 2 heads model) Monoscope, 6KHz (For 4 heads model) Color Bar, 1KHz (For 4 heads model) Hi-Fi Audio (For 4 heads model) X Value Adjustment (For 4 heads model) VSR Torque, Brake Torque (S Reel/T Reel Ass'y) Brake Torque (T Reel Ass'y) VSR Torque, Brake Torque (S Reel) Guide Roller Adjustment X Value Adjustment Reel Disk Height Adjustment Reel Disk Height Adjustment Playback Torque, Back Tension Torque During Playback Used to connect the test point of SERVICE and GROUND
PREPARATION FOR SERVICING
How to use the Servicing Fixture 1. While pressing the POWER button on the set for more than 2 seconds, press the CH DOWN button on the set simultaneously at the Power OFF. Although the DVD is connected, the DVD mode cannot be selected. 2. Short circuit between TP3001 and Ground with the cable JG154. (The BOT, EOT, and the Reel Sensor do not work and the VCR deck can be operated without a cassette tape.) 3. In case of using a cassette tape, press the STOP/EJECT button to insert or eject a cassette tape. Turn on the power and re-check the cable before checking the trouble points. When you servicing with connection of DVD, perform the operations above step 2 to step 3. D1-1
MECHANICAL ADJUSTMENTS
1. CONFIRMATION AND ADJUSTMENT
Read the following NOTES before starting work. Place an object which weighs between 450g~500g on the Cassette Tape to keep it steady when you want to make the tape run without the Cassette Holder. (Do not place an object which weighs over 500g.) 1-1: CONFIRMATION AND ADJUSTMENT OF REEL DISK HEIGHT 1. Turn on the power and set to the STOP mode. 2. Set the master plane (JG022) and reel disk height adjustment jig (JG024A) on the mechanism framework, taking care not to scratch the drum, as shown in Fig. 11-A. 3. While turning the reel and confirm the following points. Check if the surface "A" of reel disk is lower than the surface ìBî of reel disk height adjustment jig (JG024A) and is higher than the surface "C". If it is not passed, place the height adjustment washers and adjust to 10(+2, -0)mm. 4. Adjust the other reel in the same way.
Master Plane (JG022)
1-2: CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION 1. Set to the PLAY mode. 2. Adjust the adjusting section for the Tension Arm position so that the Tension Arm top is within the standard line of Main Chassis. 3. While turning the S Reel clockwise, confirm that the edge of the Tension Arm is located in the position described above.
Standard line of Main Chassis
Tension Arm
0.5mm (Adjusting range)
Fig. 1-2-A
Adjusting section for the Tension Arm position
Reel Disk Height Adjustment Jig (JG024A)
Tension Band
The Tension Arm top will move to the inside direction of the Main Chassis. Bend
The Tension Arm top will move to the outside direction of the Main Chassis.
Fig. 1-2-B
Fig. 1-1-A
Reel Disk Height Adjustment Jig (JG024A) (B)
1-3: CONFIRMATION OF PLAYBACK TORQUE AND BACK TENSION TORQUE DURING PLAYBACK 1. Load a video tape (T-120) recorded in standard speed mode. Set the unit to the PLAY mode. 2. Install the tentelometer as shown in Fig. 1-3. Confirm that the meter indicates 20 ± 2gf in the beginning of playback. USING A CASSETTE TYPE TORQUE TAPE (JG100A) 1. After confirmation and adjustment of Tension Post position (Refer to item 1-2), load the cassette type torque tape (JG100A) and set to the PLAY mode. 2. Confirm that the right meter of the torque tape indicates 50~90gf·cm during playback in SP mode. 3. Confirm that the left meter of the torque tape indicates 25~40gf·cm during playback in SP mode.
Tentelometer
Reel Disk
Master Plane (JG022)
10(+0.2, -0)mm
(C)
(A) Height Adjustment Washer 2.6x4.7xT0.13 2.6X4.7xT0.25
Fig. 1-1-B
Video Tape
P1 Post
Guide Roller
Fig. 1-3
D2-1
MECHANICAL ADJUSTMENTS
1-4: CONFIRMATION OF VSR TORQUE 1. Install the Torque Gauge (JG002F) and Adapter (JG002B) on the S Reel. Set to the Picture Search (Rewind) mode. (Refer to Fig.1-4-B) 2. Then, confirm that it indicates 120~180gf·cm. NOTE Install the Torque Gauge on the reel disk firmly. Press the REW button to turn the reel disk. 1-5: CONFIRMATION OF REEL BRAKE TORQUE (S Reel Brake) (Refer to Fig. 1-4-B) 1. Once set to the Fast Forward mode then set to the Stop mode. While, unplug the AC cord when the Pinch Roller Block is on the position of Fig. 1-4-A. 2. Move the Idler Assíy from the S Reel. 3. Install the Torque Gauge (JG002F) and Adapter (JG002B) on the S Reel. Turn the Torque Gauge (JG002F) clockwise. 4. Then, confirm that it indicates 60~100gf·cm. (T Reel Brake) (Refer to Fig. 1-4-B) 1. Once set to the Fast Forward mode then set to the Stop mode. While, unplug the AC cord when the Pinch Roller Block is on the position of Fig. 1-4-A. 2. Move the Idler Assíy from the T Reel. 3. Install the Torque Gauge (JG002E) and Adapter (JG002B) on the T reel. Turn the Torque Gauge (JG002E) counterclockwise. 4. Then, confirm that it indicates 30~50gf·cm.
The position at FF mode. Pinch Roller Block Stop at this position.
NOTE If the torque is out of the range, replace the following parts. Check item 1-4 1-5 Replacement Part Idler Assíy/Clutch Assíy S Reel side: S Reel/Tension Band/Tension Connect/Tension Arm Assíy T Reel side: T Reel/T Brake Band//T Brake Spring/T Brake Arm
2. CONFIRMATION AND ADJUSTMENT OF TAPE RUNNING MECHANISM
Tape Running Mechanism is adjusted precisely at the factory. Adjustment is not necessary as usual. When you replace the parts of the tape running mechanism because of long term usage or failure, the confirmation and adjustment are necessary. 2-1: GUIDE ROLLER 1. Playback the VHS Alignment Tape (JG001 or JG001B). (Refer to SERVICING FIXTURE AND TOOLS) 2. Connect CH-1 of the oscilloscope to TP101 (Envelope) and CH-2 to TP3002 (SW Pulse). 3. Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center. 4. Trigger with SW Pulse and observe the envelope. (Refer to Fig. 2-1-A) 5. When observing the envelope, adjust the Adjusting Driver (JG005) slightly until the envelope will be flat. Even if you press the Tracking Button, adjust so that flatness is not moved so much. 6. Adjust so that the A : B ratio is better than 3 : 2 as shown in Fig. 2-1-B, even if you press the Tracking Button to move the envelope (The envelope waveform will begin to decrease when you press the Tracking Button). 7. Adjust the PG shifter during playback. (Refer to the ELECTRICAL ADJUSTMENTS) NOTE After adjustment, confirm and adjust A/C head. (Refer to item 2-2)
CH-1 Envelope (TP101) CH-1 Track CH-2 Track
Cassette Opener The position at STOP mode. Capstan DD Unit
Cassette Holder Assíy
Fig. 1-4-A
Torque Gauge/Adapter (JG002F/JG002B)
Torque Gauge/Adapter (JG002E/JG002B)
CH-2 SW Pulse (TP3002)
Fig. 2-1-A
Entrance S Reel Max A B Max Exit
T Reel
Fig. 1-4-B
A : B >3 : 2
Fig. 2-1-B
D2-2
MECHANICAL ADJUSTMENTS
2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/ CONTROL HEAD When the Tape Running Mechanism does not work well, adjust the following items. 1. Playback the VHS Alignment Tape (JG001 or JG001B). (Refer to SERVICING FIXTURE AND TOOLS) 2. Confirm that the reflected picture of stamp mark is appeared on the tape prior to P4 Post as shown in Fig. 2-2-A. a) When the reflected picture is distorted, turn the screw (1) clockwise until the distortion is disappeared. b) When the reflected picture is not distorted, turn the screw (1) counterclockwise until little distortion is appeared, then adjust the a). 3. Turn the screw (2) to set the audio level to maximum. 4. Confirm that the bottom of the Audio/ Control Head and the bottom of the tape is shown in Fig. 2-2-C. c) When the height is not correct, turn the screw (3) to adjust the height. Then, adjust the 1~3 again.
Audio/Control Head Reflected picture of Stamp Mark P4 Cap (1) CH-3 Audio (2) Envelope
2-3: TAPE RUNNING ADJUSTMENT (X VALUE ADJUSTMENT) 1. Confirm and adjust the height of the Reel Disk. (Refer to item 1-1) 2. Confirm and adjust the position of the Tension Post. (Refer to item 1-2) 3. Adjust the Guide Roller. (Refer to item 2-1) 4. Confirm and adjust the Audio/Control Head. (Refer to item 2-2) 5. Connect CH-1 of the oscilloscope to TP3002, CH-2 to TP101 and CH-3 to HOT side of Audio Out Jack. 6. Playback the VHS Alignment Tape (JG001S or JG001T). (Refer to SERVICING FIXTURE AND TOOLS) 7. Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center. 8. Set the X Value adjustment driver (JG153) to the (4) of Fig. 2-2-B. Adjust X value so that the envelope waveform output becomes maximum. Check if the relation between Audio and Envelope waveform becomes (1) or (2) of Fig. 2-3.
Fig. 2-3
Stamp Mark
Fig. 2-2-A
2-4: CONFIRM HI-FI AUDIO (Hi-Fi model only) 1. Connect CH-1 of the oscilloscope to TP3002 and CH-2 to the Hi-Fi Audio Out Jack. 2. Playback the VHS Alignment Tape (JG001P or JG001Q). (Refer to SERVICING FIXTURE AND TOOLS) 3. Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center. 4. Press the Tracking Up button and count number of steps which the audio output is changed from Hi-Fi (10KHz) to MONO (6KHz). 5. Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center. 6. Press the Tracking Down button and count number of steps which the audio output is changed from Hi-Fi (10KHz) to MONO (6KHz). 7. If the difference are more than 3 steps, set the X Value adjustment driver (JG153) to (4) of Fig. 2-2-B. Change the X Value and adjust it so that the value becomes within 2 steps.
Audio/Control Head
(3)
(1)
(2) (4)
Fig. 2-2-B
Audio/Control Head Tape
0.25±0.05mm
Fig. 2-2-C
D2-3
MECHANICAL ADJUSTMENTS
3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE
4 5
6 3
2
7
1
10
9
8
1. Tension Connect 2. Tension Arm 3. Guide Roller 4. Audio/Control Head 5. X value adjustment driver hole
6. P4 Post 7. T Brake Spring 8. T Reel 9. S Reel 10. Adjusting section for the Tension Arm position
D2-4
ELECTRICAL ADJUSTMENTS
Read and perform this adjustment when repairing the circuits or replacing electrical parts or PCB assemblies.
1. BASIC ADJUSTMENT
CAUTION When you exchange IC and Transistor for a heat sink, apply the silicon grease (YG6260M) on the contact section of the heat sink. Before applying new silicon grease, remove all the old silicon grease. (Old grease may cause damages to the IC and Transistor.) 1-1: PG SHIFTER CONDITIONS MODE-PLAYBACK Input Signal-Alignment Tape (JG001P) INSTRUCTIONS 1. Connect CH-1 on the oscilloscope to TP3002 and CH-2 to TP8001. 2. Playback the alignment tape. (JG001P) 3. Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center. 4. Press both CH UP button on the set and the STOP button on the set for more than 2 seconds.
CH-2
6.5H
CH-1
Fig. 1-1-A
CH-2
CH-1 6.5H
Fig. 1-1-B
D3-1
ELECTRICAL ADJUSTMENTS
2. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION)
AC IN
POWER PCB
CP502
CP503 OS8001
CD502
J8001 TP8001
J8008
J8006
CP102 TP3001 TU301
CD 102
J8009
A/C HEAD
J8007
CP1701 CP8001 CP8502 CP8002 CD8002 CP651 CD8501 CD8502
TP101 TP3002
CP2602
J8003
J8004
J8005
CD651
V651
CP2601 CP2603
VCR MT PCB
DVD MT PCB
CP681
OPERATION PCB
CD2601 CD2603
DECK CD
D3-2
DVD BLOCK DIAGRAM
B B A DECK DK4001 TT-4000 (TU2020R) LDMP,LDMN FMN,FMP,DWN,DMP RF,FO,EO,AO DO,CO,BO
X8501 27MHz
VCR BLOCK
RF_AMP IC2603 OEC6067A
D-RAM IC2002 MSM5416258B-30
DACSOX,DACDATA,DACCLK C
AUDIO DAC/PLL CLOCK GENERATOR IC8503 AD1959YRSRL
E AUDIO OUT L AUDIO OUT R ZERO
/BWL,/BWU,/BCAS /BRAS,/BDE
LMT,TOPN,TCLS
DPD 0~15 DPA 0~8
MMPEG+1.8V
F+,T-,T+,F-
RF OUT
2.5V REG IC4002 SS-816A25AMC
A+3V
PUDET2,LSRDVD
ABCLK,ALRCLK,ASDATA 0 SCLK 2 GCLK GCLK 1
MOTOR DRIVER IC2602 BA5813FM
B, F
A, C
DSP IC2001 OEC6068A
DVD DFAT 0~7 DVDSTB,VALID,SOS,ERR
D DVD OUT Y C DVD Y DVD U DVD V SPDIF-134
MPEG IC4001 ZR36732 HD 0~15
DAC,A,B,C,D
C
VIDEO DRIVER IC8504 MM1540AFBE
LDMN,LDMP
DISKWDI FCSEAR SVCEX MCSO#,MRAS#,MCAS#,MWE#,MDQM
MWR MRD
RESET
HA 8
C
E
V_SYNC CONTROL IC1006 TC7W241FU
HA 1~4 V-SYNC
MICON IC1001 OEC6069A
MPEG#,MPGIRQ,I45RSTX
MD 0~15
MA 0~11
SD-RAM IC4004 MSM56V16160F-8
DVD RESET TX,RX
A A HA 1~19 SD-RAM IC4003 MSM56V16160F-8
FLASHCS
FLASH IC4006 MBM29F800BA-55
LCAS,UCAS OE,WE,RAS
HA 1~8
E
EEPROM IC1002 S-24C01BFJ-TB
MWR,MRD MPCLK
C
SCL,SDA
D-RAM IC4005 MSM5416258B-30
HD 0~15 A
E-1
A---P.CON+D5V B---P.CON+5V A C---P.CON+3.3V D---P.CON+9V E---P.CON+5V D F---P.CON+9V A
E-2
Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM
X101 3.579545MHz
Q109 Y/C/AUDIO/CCD/HEAD AMP IC IC101 LA71205M-MPB 50 VX01 TIMMING 67 L H.SW H 66 CP101 1 EP/LP-CH2 (L) 2 3 4 CYL 5 6 7 8 9 EP/LP_COM EP/LP-CH1 (R) SP-CH2 (L) SP_COM SP-CH1 (R) HF2 (L) HF_COM HF1 (R) 74 HI-FI/ DEMODULATOR HF1 HF_COM HF2 CP103 FE HEAD 1 FE HEAD (HOT) 2 FE HEAD (GND) 8 AUTO BIAS 6 PB.EE 11 CP102 6 5 HEAD AUDIO CONTROL 4 3 2 AUDIO PB AUDIO REC CTL+ CTLAE HEAD(-) 4 1 6 3 Q104 BIAS OSC COIL, BIAS OSC L101 Q105 5 2 BIAS CTL 5 4 3 2 10 80 78 76 EQ AMP P R ALC DET MUTE ALC L H H.SW 73 65 72 H H.AMP SW L P R GCA R FM AGC DELAY PB FM-EQ PB PHASE-EQ 9 7 REC AMP DOUBLE LIM FM DEM LINE AMP LPF SUB LPF P ACC AMP R KIL B.D. P 3.58M BPF1 PB AMP B-UP AMP Main CONV AGC AMP 49 BUFFER
Q107 BUFFER 39 OUT CCD FM MOD WC DC CLAMP NL EMPHA V/I CONV Y-LPF R 3.58M BPF2 R YNR/ COMB N.L. DEEM NC1 Y/C MIX 1/2 P FBC V-AGC R ENV DET 59 P R Chara INS. CONP 60 OUT 24 25 SYNC SEP 32 30 28 6dB 26 Q106 BUFFER Y/C_VIDEO_OUT FSC FRONT_V_IN TU/REAR_V_IN TO_NORMAL_A FROM_NORMAL_A FSC DVD V OUT TUNER/JACK ENV. DET COMP DUMMY_V. SYNC C.SYNC AUDIO MUTE 58 HA SW C ROT 57 RF SW IN VCA CLAMP 36 34 DETAL ENH CLAMP P P 21 SERIAL DECODER 37 55 54 53 Y/C_CS Y/C_DATA Y/C_CLK SYSCON
41 PULL DRIVER REC FM-EQ KIL C-LPF
22
H. AMP_SW C. ROTARY H. SW AUDIO_MUTE-H SYSCON
HI-FI/ DEMODULATOR DVD/HDD/ IN/OUT
REGULATOR
1 AE HEAD(+)
Q101, Q102 AUDIO PB SW
Q103 SW
P. CON + 5V V.REC_ST-H CTL+ CTL-
SYSCON
E-3
E-4
SYSTEM CONTROL BLOCK DIAGRAM
SYSCON/TIMER/SERVO IC3001 OEC0119B VCR_POWER_ON-H REGULATOR VCR_POWER_ON-L POWER_FAIL 42 POWER ON_H 41 POWER ON-L 37 POWER FAIL 88 SYS MUTE 65 RX X3001 10MHz SYS_MUTE RX TX DVD RESET 1G/VCR/T-REC_LED 3G/TV/VCR_LED SEG_5 SEG_1 80 OSC 2 78 OSC 1 64 TX X3002 32.768KHz 75 X2 76 X1 44 DVD RESET 48 1G/VCR/T-REC LED 50 3G TV/VCR LED 63 SEG5 55 SEG1 47 VCR LED 46 DVD LED 49 2G/DUB/REC LED 29 KEY-B 30 KEY-A 43 REM IN AT 5.2V 25 BOT-H HIFI ENV 32 V.REC_ST-H AUDIO_MUTE-H
SCL SDA
HIFI_ENV.DET HIFI_H.SW ST_SELECT HIFI H.SW 106 ST SELECT 4 FSC OUT 4 FSC IN 31 21 22
HI-FI/ DEMODULATOR
X3003 14.31818MHz
C.SYNC DUMMY_V.SYNC H.SW C.ROTARY Y/C CS AUDIO_MUTE-H H.AMP_SW V.REC_ST-H ENV.DET CTL+ CTLY/C_DATA Y/C_CLK COMP AV_SW1 SW_V_ OUT TUNER_A_MUTE-H POWER_MUTE-L AFT-S.CURVE VIDEO_OUT TV/VCR SCL SDA Y/C/AUDIO/ CCD/HEAD AMP
C.SYNC 111 DUMMY V.SYNC 109 VIDEO H.SW 105 C.ROTARY Y/C CS AUDIO MUTE-H 99 93 95
DVD/HDD/ IN/OUT
H.AMP SW 100 V.REC ST-H V ENV CTL(+) CTL(-) Y/C DATA Y/C CLK 96 24 3 4 54 53
DISPLAY/ OPERATION
VCR_LED
DVD_LED 2G/DUB/REC_LED KEY-B KEY-A REM_IN
COMP 101 AV SW1 92 17 85 87 33 19 86 61 62 SW3001 TAB SW 35 TAB SW 6 SCL IC3003 PST3231NR RESET 77 1 SYSTEM RESET 2 3 5 SDA
D3001
CENT SW BOT SENSOR Q3008 Q3007 EOT SENSOR Q3006 2 REEL SENS Q3001 1 2 1 REEL SENS Q3002 4 3 4 3 P.CON+5V
26 EOT-H 94 CENT LED
CV IN1 TUNER L POWER MUTE L AFT S.CURVE CV OUT VCR-H IIC CLK IIC SDA
TUNER/JACK
AT+5.2V
11 12 10 CAPSTAN 5 DD UNIT 9 CAP CTL 1 CAP FG 4 CAP/M/F/R 2 CAP VCO 8 LD/CY_VCO 6 GND[M] MOTOR_GND AT+12.6V CAP_VCO DVD_POWER_ON H REGULATOR 2 MS_SEN B Q3004 3 4 1 CP3001 CYL FG/PG CYL_CTL LDM CTL I LIMIT
70 REEL-T 69 REEL-S 103 CYL SPEED UP 104 DFG/PG 107 DRUM PWM 97 LD M CTL 102 CAP FULL 108 CAP PWM 84 CAP LIMIT 9 CAP FG
EEP ROM IC3099 S-24C02BDP-1A REGULATOR
AT+5V
SEG 10 73 SEG 9 SEG 8 SEG 7 SEG 6 3G/TV/VCR LED 71 68 67 66 50 51 52 58 59 60
SEG 10 SEG 9 SEG 8 SEG 7 SEG 6 3G/TV/VCR_LED
98 CAP FWD-L 38 CFG IN 2 45 DVD POWER ON H 28 MS SEN-A 2 1 MS_SEN A Q3005 3 4 27 MS SEN-B
DISPLAY/ OPERATION
4G/TIME SHIFT LED 5G/CB/BS LED SEG 2 SEG 3 SEG 4
4G/T_SHT_LED
5G/CB/BS_LED SEG 2 SEG 3 SEG 4
E-5
P.CON +5V
E-6
REGULATOR BLOCK DIAGRAM
CAP_VCO AT+5V AT+12.6V SYSCON AT+5.2V Q1702 P.CON+5V SW. Q1703 P.CON+5V SW. Q1713 M-CON + 5V SW. Q1714 M-CON POWER SW. AT+5.2V P.CON+5V
AT+5.2V_VCC
P.CON+12V P.CON+5V
DISPLAY/ OPERATION
HI-FI/ DEMODULATOR
CP1701 1 2 3 4 5 6 POWER 7 8 9 10 11 12 13 14 MOTOR +12V MOTOR GND AT +13V AT 5.2V AT 5.2V UNREG 3.3V UNREG 3.3V POWER ON H GND GND P.FAIL TUNER 32V LED_AT+5.2V Q1708 3.3V CTL Q1707 3.3V CTL P.CON+5V DH 3.3V OUT Q1706 P.CON+3.3V P.CON+9V_DVD P.CON+5V +32V TUNER/JACK P.CON+12V P.CON+9V AT+13V DVD/HDD/ IN/OUT DVD_POWER_ON-H POWER FAIL SYSCON VCR POWER ON-H VCR POWER ON-L Q1704 P.ON SW Q1705 P.CON+12V SW. Q1701 P.CON+12V SW. P.CON+5V
AT+5.2V_VCC
Y/C/AUDIO/CCD/ HEAD AMP
E-7
E-8
DISPLAY/OPERATION BLOCK DIAGRAM
V651 ELF-4M6SDRVGWB
14 15 13 12 11 10 8
9
7
5
4
6
2
1
3 Q651 5G SW Q652 SEG10 SW Q653 SEG9 SW Q654 4G SW Q655 SEG8 SW Q656 SEG7 SW Q657 SEG6 SW Q658 Q659 3G SW Q660 SEG4 SW Q661 2G SW Q662 SEG3 SW Q663 SEG2 SW Q664 SEG1 SW Q665 1G SW 1G/VCR/T-REC_LED DVD_LED VCR EJECT VCR_LED POWER VCR/DVD CH UP CH DOWN VCR LED D651 SEG1 SEG2 2G/DUB/ REC_LED SEG3 SEG4 SEG5 SW SEG5 3G/TV/VCR_LED SYSCON SEG6 SEG7 SEG8 4G/T_SHT_LED SEG9 SEG10 5G/CS/BS_LED
CP681 KEY-A STOP REC/OTR FF/CUE PLAY REW/REV OPEN/CLOSE DVD LED D681 KEY-B DVD LED 2 1 5
CP651 4 5 1 OS651 1 REM_IN KEY-A KEY-B SYSCON
Q666 DVD LED SW AT+5.2V REGULATOR
E-9
E-10
HI-FI/DEMODULATOR BLOCK DIAGRAM
HI-FI AUDIO/HEAD AMP/DEM IC IC701 AN3663FBP DVD_A_OUT-R VCO 1 HF1 22 AMP 10 FRONT_A_IN-R FRONT_A_IN-L DVD_A_OUT-L
AGC
L/R MIX
REC LPF
DVD/HDD/ IN/OUT
INPUT SW
HF2 24 AMP
15 2 4 3
AMP HF_COM 21 OUTPUT SW AMP RFC Y/C/AUDIO/CCD /HEAD AMP PNR
53 57 59
HIFI_OUT_R HIFI_OUT_L RF_CONV_A.OUT TUNER/JACK
VCO-FO ADJ LOGIC FSC FROM_NORMAL_A TO_NORMAL_A 45 62 61
BPF
48 FM LIM 30
SIF OUT
DBX NOISE REDUCTION
DEM BLOCK
29
V. REC_ST-H
28 27 25 P.CON 5V 40 51 P.CON 12V 58 LOGIC 36 42 43 56
HIFI_ENV. DET HIFI_H.SW AUDIO_MUTE-H SCL SDA ST_SELECT SYSCON
REGULATOR
E-11
E-12
TUNER/JACK BLOCK DIAGRAM
COAXAL J8007
2 FRONT AV JACK AUDIO L AUDIO R DVD AUDIO OUT REAR OUT JACK VIDEO J8003 J8004 J8005 J8001 J8009 2 Q8004 VIDEO_OUT SYSCON SW V OUT P. CON+12V AT+13V REGULATOR P.CON+5V +32V FRONT_V_IN Y/C VIDEO OUT P.CON+9V RF-SW SW301 TU301 3 6 2 2 Q8005 FRONT_A_IN-L MUTE SW Q8006 MUTE SW Q8007 MUTE SW RF_CONV_A. OUT SIF OUT 16 5 11 12 22 Q303 TU A MUTE SW TU_A_MUTE-H POWER MUTE_L 23 24 SW Q8008 6 VCC 7 8 GND 1 2 3 AMP IC8003 NJM4580M 7 6 1 2 8 VCC 3 14 16 1 13 11 10 9 Bout Aout VDD BY AY C A B AV SW1 AFT-S. CURVE SYSCON TV/VCR SCL SDA Y/C/AUDIO/CCD HEAD AMP BUFFER Q8002 D.AUDIO DRIVER DVD_Y DVD_U DVD_V SPDIF-134 C_OUT Y_OUT 3 2 3 5 2 2 2 3 Y/C SEPA J8006 3 4
OPT TRANSFORMER OS8001
1 2 COMPONENT OUT J8008
Q8001 D.AUDIO DRIVER 2 3 5
DVD/HDD/ IN/OUT
TU_V_OUT
FRONT_A_IN-R
HIFI_A_OUT_R HIFI_A_OUT_L
HI-FI/ DEMODULATOR
VIDEO SW IC8005 NJM2533V
GND
AX
4
5
15 12 2
BX 8
AUDIO SW IC8001 CD4053BNSR
DVD_V_OUT DVD_MUTE_R DVD_MUTE_L
DVD/HDD/ IN/OUT
E-13
E-14
DVD/HDD IN/OUT BLOCK DIAGRAM
CP8001
1 2 3 4 5 FROM/TO DVD BLOCK 6 7 8 9 10 11 12 13 TX RX GND GND PCON+9VA PCON+9VA PCON+5V PCON+5V GND PCON+3.3V PCON+3.3V GND SPDIF-134 DVD_MUTE_L DVD_MUTE_R SPDIF-134 Y_OUT C_OUT CP8002 1 2 3 4 5 6 7 FROM/TO DVD BLOCK 8 9 10 11 12 13 14 15 16 17 18 Y GND C GND CVBS GND DVD U GND DVD V GND DVD Y GND AUDIO-L GND AUDIO-R ZERO DVD RESET Q8015 MUTE SW Q8013 MUTE SW 5 7 DVD_A_OUT-R 3 1 DVD_A_OUT-L HI-FI/ DEMODULATOR MIXER IC8004 NJM4580M DVD_V_OUT Y/C/AUDIO/CCD/ HEAD AMP DVD_V_OUT DVD_U DVD_V DVD_Y DVD_A_OUT-L DVD_A_OUT-R TUNER/JACK P.CON +5V DH P.CON+3.3V REGULATOR P.CON +9V_DVD TX RX DVD RESET SYSCON
Q8012 Q8014 MUTE SW MUTE SW
Q8011 MUTE SW SYS_MUTE
SYSCON
E-15
E-16
POWER BLOCK DIAGRAM
T501 18
CP502 LED_AT+5.2V TUNER 32V P.FAIL GND GND POWER ON H 12 14 15 UNREG 3.3V UNREG 3.3V AT 5.2V AT 5.2V AT +13V 14 13 12 11 10 9 8 7 6 5 4 3 2 1 13 REGULATOR
7
2 6 4
MOTOR