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CLASS 1 LASER PRODUCT
MVDT2402
SERVICE MANUAL
COLOR TELEVISION/VIDEO CASSETTE RECORDER/ DVD VIDEO PLAYER
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.
A1-1
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.
6. AVOID AN X-RAY
Safety is secured against an X-ray by considering about the cathode-ray tube and the high voltage peripheral circuit, etc. Therefore, when repairing the high voltage peripheral circuit, use the designated parts and make sure not modify the circuit. Repairing except indicates causes rising of high voltage, and it emits an X-ray from the cathoderay tube.
2. AVOID AN ELECTRIC SHOCK
There is a high voltage part inside. Avoid an electric shock while the electric current is flowing.
3. 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.
7. 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.
(INSULATION CHECK PROCEDURE)
4. 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.
5. TAKE CARE TO DEAL WITH THE CATHODE-RAY TUBE
In the condition that an explosion-proof cathode-ray tube is set in this equipment, safety is secured against implosion. However, when removing it or serving from backward, it is dangerous to give a shock. Take enough care to deal with it.
1. Unplug the plug from the AC outlet. 2. Remove the antenna terminal on TV and turn on the TV. 3. Insulation resistance between the cord plug terminals and the eternal exposure metal [Note 2] should be more than 1M ohm by using the 500V insulation resistance meter [Note 1]. 4. If the insulation resistance is less than 1M ohm, the inspection repair should be required.
[Note 1]
If you have not the 500V insulation resistance meter, use a Tester.
[Note 2]
External exposure metal: Antenna terminal Earphone jack
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.
A1-2
WHEN REPLACING DVD DECK
[ When the removal of the DVD Deck ] Before removing Pick Up PCB and DVD PCB connector, make the short circuit on the position as shown Fig. 1 using a soldering. If you remove the DVD Deck with no soldering, the Laser may be damaged. [ When the installation of the DVD Deck ] Remove all the soldering on the short circuit position after the connection of Pick Up PCB and DVD PCB connector.
Pick Up PCB
Make the sort circuit using a soldering.
Fig. 1
TAPE REMOVAL METHOD AT NO POWER SUPPLY
1. Remove the TV/DVD/VCR block from the main unit 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
Main Cam Clutch Ass'y
Fig. 1
Main Chassis (Front Side)
Fig. 2
A1-3
DISC REMOVAL METHOD AT NO POWER SUPPLY
1. Remove the Back Cabinet and AV PCB/DVD Block. (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.) 2. Rotate the Main Gear in the direction of the arrow by hand. (Refer to Fig. 1) 3. Draw the Tray.
Main Gear Deck CD
Fig. 1
PARENTAL CONTROL - RATING LEVEL
4 DIGIT PASSWORD CANCELLATION
If the stored 4 digit password in the Rating Level menu needs to be cancelled, please follow the steps below. 1. 2. 3. 4. 5. 6. Turn Unit ON. Press and hold the 'STOP' key on the front panel. Simultaneously press and hold the '7' key on the remote control unit. Hold both keys for more than 3 seconds. The On Screen Display message 'PASSWORD CLEAR' will appear. The 4 digit password has now been cleared.
NB: The above procedure will reset ALL of the player's settings to the default factory state.
A1-4
TABLE OF CONTENTS
IMPORTANT WARNING ......................................................................................................... SERVICING NOTICES ON CHECKING .................................................................................. HOW TO ORDER PARTS ....................................................................................................... WHEN REPLACING DVD DECK........................................................................................... 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 OF DVD DECK PARTS ................................................................................ 4. REMOVAL OF ANODE CAP ........................................................................................... 5. 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/HEAD AMP..................................................................................................... MICON.................................................................................. ............................................. IN/OUT .................................................................................................................................. CHROMA/IF .......................................................................................................................... SOUND AMP/SURROUND .................................................................................................. Hi-Fi/DEMODULATRO ......................................................................................................... DIGITAL COMB FILTER................................................................................................... DVD IN/OUT...................................................................................................................... REGULATOR...................................................................................................................... TV....................................................................................................................................... A1-1 A1-2 A1-2 A1-3 A1-3 A1-4 A1-4 A2-1 A3-1~A3-6 B1-1~B1-2 B2-1~B2-6 B3-1~B3-3 B4-1 B5-1, B5-2 C1-1, C1-2 C2-1 C3-1, C3-2 C4-1 D1-1 D1-1 D2-1~D2-4 D3-1~D3-6 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 E-19,E-20 E-21,E-22
PRINTED CIRCUIT BOARDS DVD ....................................................................................................................................... F-1, F-2 VCR ....................................................................................................................................... F-3~F-6 DEFLECTION/CRT/OPERATION...................................................................................... F-7, F-8 SCHEMATIC DIAGRAMS MPEG/MICON/DSP .............................................................................................................. MEMORY .............................................................................................................................. RF AMP/DSP ........................................................................................................................ AUDIO/VIDEO ...................................................................................................................... Y/C/AUDIO/HEAD AMP ....................................................................................................... MICON .................................................................................................................................. IN/OUT .................................................................................................................................. CHROMA/IF ......................................................................................................................... SOUND AMP/SURROUND .................................................................................................. Hi-Fi/DEMODULATOR ......................................................................................................... DIGITAL COMB FILTER ...................................................................................................... DVD IN/OUT ......................................................................................................................... REGULATOR1 ...................................................................................................................... TV POWER ........................................................................................................................... DEFLECTION.................................................................................................................... CRT/OPERATION............................................................................................................... INTERCONNECTION DIAGRAM ........................................................................................ WAVEFORMS .......................................................................................................................... MECHANICAL EXPLODED VIEWS .................................................................................... CHASSIS EXPLODED VIEWS ................................................................................................ DVD DECK EXPLODED VIEWS ............................................................................................. MECHANICAL REPLACEMENT PARTS LIST ...................................................................... CHASSIS REPLACEMENT PARTS LIST ............................................................................... DVD DECK REPLACEMENT PARTS LIST ............................................................................ ELECTRICAL REPLACEMENT PARTS LIST ........................................................................
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 G-33, G-34 H-1~H-3 I1-1, I1-2 I2-1, I2-2 I3-1 J1-1 J2-1 J3-1 J4-1~J4-3
A2-1
GENERAL SPECIFICATIONS
G-1 TV System CRT CRT Size / Visual Size CRT Type Deflection Magnetic Field BV/BH 24 inch / 600mmV Flat 101 degree + 0.45 G / 0.18 G NTSC 2 Speaker Front 1.8 x 3.9 Inch 8 ohm 1.5W + 1.5W 1.5W + 1.5W VHS Player / Recorder NTSC Yes OVD-7 Front 3 4 Heads 2 Heads Mono /Yes Yes SP/SLP(EP) SP/SLP(EP) FF:1'48"/REW:1'48" T-120 SP/SLP(EP)=3x,5x / 9x,15x Yes 1/10 NTSC DVD, CD-DA, CD-R/RW DVD-R/RW (Video Format Only) 120 mm , 80 mm Front Loading 3 Motors 1-Lens 2-Beams System 135min (4.7GB) 245min (8.5GB) 74min 4 step 2-45 times (DVD) 4-40 times (CD) 4 step 2-45 times (DVD) 4-40 times (CD) Fwd 1/7 - 1/2 times -Rev --US System M 1 Tuner US(w/CATV) F-Synth VHF/UHF 75 ohm 2~69, 4A,A-5~A-1, A~I, J~W,W+1~W+84 45.75MHz 41.25MHz 4.5MHz No US-Stereo Yes 1 V p-p/75 ohm 1 V p-p/75 ohm 65dB 50dB 400 Lines 220 Lines -8.0dBm/50k ohm -8.0dBm/1k ohm
Color System Speaker Position Size Impedance MAX 10%(Typical)
Sound Output G-2 VCR System System Video System Hi-Fi STEREO NTSC PB Deck
DECK Loading System Motor Video Head FM Audio Head
Heads
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 Color System Disc Disc Diameter Deck Pick up Playback time(Max) NTSC or PAL-M
G-3
DVD System
Disc Loading System Motor DVD 1-LDVD 1-Layer DVD 2-Layer CD Video CD Fwd Actual Rev Actual
Search speed
Slow speed Actual Actual G-4 T u n in g System Broadcasting System Tuner and Receive CH System Destination Tuning System Input Impedance CH Coverage Intermediate Frequency Preset CH Stereo/Dual TV Sound Tuner Sound Muting Video Signal Picture(FP) Sound(FS) FP-FS
G-5
Sig n al
RGB Signal Audio Signal VCR
Input Level Output Level S/N Ratio (Weighted) at DVD Mode S/N Ratio (Weighted) at VCR Mode Horizontal Resolution at DVD Mode Horizontal Resolution at VCR(SP)Mode Output Level Input Level Output Level(0dB=0.775Vrms)
A3-1
GENERAL SPECIFICATIONS
DVD Output Level(-20dBFs 0dBFs=2.0Vrms) Digital Output Level S/N Ratio at DVD (Weighted) S/N Ratio at VCR (SP)(CCIR Filter:ON) Harmonic Distortion at DVD Mode Harmonic Distortion at VCR(SP) Mode Frequency Response : DVD Mode at DVD at Video CD at SVCD at CD VCR Mode at SP at LP at SLP Dynamic Range : More than Frequency Response : Wow And Flutter : Less than Channel Separation : More than Harmonic Distortion : Less than AC DC at AC at DC Stand by (at AC) Per Year Power Fuse Safety Circuit IC Protector(Micro Fuse) Dew Sensor Safety Radiation X-Radiation Laser Operation Storage -12.0dBm/1k ohm 0.5 V p-p/75 ohm(DVD) 90 dB 38 dB 0.06% (1kHz) 1.5% (1kHz) Typical 4Hz - 22kHz 4Hz - 20kHz 100Hz - 10kHz 100Hz - 4kHz 90 dB 20Hz - 20kHz 0.01 %Wrms 60 dB 1.0 % 120V,60Hz 135 W at 120 V 60 Hz 4 W at 120 V 60 Hz Yes Yes No No UL FCC DHHS DHHS +5oC ~ +40oC -20oC ~ +60oC Less than 80% RH 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 No Yes Yes Yes Yes Yes Yes Yes Yes Yes
Hi-Fi Audio Signal
G-6
Power
Power Source Power Consumption
Protector
G-7
Regulation
G-8 G-9 G-10
Temperature Operating Humidity On Screen Display (TV/VCR)
Menu Menu System Setup
Type Clock Set On/Off Timer Set Auto Clock On/Off Standard Time Daylight Saving Time
TV Setup Language Picture Audio Picture Preference Channel Setup TV/CATV Auto CH Memory Add/ Delete V-chip Setup Tape Setup Timer Rec Set Auto Repeat On/Off G-CODE(or SHOWVIEW or PLUSCODE)No. Entry Clock / Date TV/VCR DVD CH/AV(LINE) Tape Counter(Linear Counter) Tape Speed Sleep Time Stereo/Audio Output Bilingual SAP Control Volume Level Brightness/Contrast/Sharpness/Color Tint Bass/Treble/Balance Manual Tracking Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause/Eject/Tape In Auto Tracking/Manual Tracking Caption / Text (Symbol Mark)
A3-2
GENERAL SPECIFICATIONS
Index Mute Hi-Fi Repeat Zero Return DEW Menu (DVD) Menu Type Language Menu Subtitle Audio Picture TV Screen Size(4:3) OSD Display On/Off JPEG Interval Select Files Sound DRC (Dynamic Range Control) dts Decode Output(5.1ch/ 2ch) Surround On/Off Center On/Off Sub Woofer On/Off Parental Password Lock/ Un Lock Rating Level Other OSD Language(Set up Language) Output(RGB/Composite) Open Close No disc Reading Play Still/Pause Stop Prohibit Mark Step Skip(>>|) Skip(|<<) Random Repeat Slow+ ## Slow- ## Search+ ## Search- ## Jump Resume Title No. Chapter No. Track No. Time Sub Title No. Angle No. Vocal On/Off Audio No. Audio Stereo L/R Zoom Marker No. Program Play Back Surround On/Off Screen Saver MP3, WMA, JPEG Yes Yes Yes Yes Yes No Yes Character Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No Yes Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes (CD, MP3, WMA, JPEG ) Yes Yes No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes No Yes (CD, MP3, WMA, JPEG ) No No Yes Yes Yes Yes (MP3, WMA Only) Yes English French Spanish English French Spanish 1990/1/1 ~ 2081/12/31 8 Program/ 1 Month 6 Hours 120 Min 10 Min 1 Program
G-11
On Screen Display (DVD)
Folder Name File Name File No Time Track No
G-12 G-13
OSD Language Clock,Timer and Timer Back-up
TV/VCR DVD Calendar Timer Events One Touch Recording Max Time OTPB Valid Time Sleep Timer Max Time Step On/Off Timer Program(On Timer / Off Timer)
A3-3
GENERAL SPECIFICATIONS
No Signal No Operation Timer Back-up (at Power Off Mode) Unit Glow in Dark Remocon Format Custom Code Power Source Voltage(D.C) UM size x pcs Total Keys Keys TV/VCR
DVD Power 1 2 3 4 5 6 7 8 9 0 ChannelChannel+ VolumeVolume+ Display (Call) Sleep Audio Select Mute Index- / SkipIndex+ / Skip+ T-REC Rec/OTR Slow+ Play Stop Rew / SearchF. Fwd / Search+ Pause / Still CM Skip Speed / Return Counter Reset / Angle Zero Return / Subtitle Input Select / Zoom Menu /Set Up Program / Repeat A-B ATR / Top Menu Tracking+ / DVD Menu Tracking- / Play Mode Cancel 3D Surround Cursor Up Cursor Down Cursor Left Cursor Right Enter
Auto Shut Off
G-14
Remote Control Unit
15 5 RC-HH NEC 71-8E 3V UM-4 x 2 pcs 52 Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
Min Min Sec No
No Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No Yes Yes Yes Yes No Yes Yes Yes Yes Yes Yes
Eject Open/Close TV Monitor Closed Caption Quick View / Jump CATV Position Wide G-15 Features Auto Head Cleaning Auto Tracking HQ (VHS Standard High Quality) Auto Power On, Auto Play, Auto Rewind, Auto Eject VIDEO PLUS+(SHOWVIEW,G-CODE) Auto Clock Forward / Reverse Picture Search Auto CH Memory Surround Stable Sound Closed Caption
A3-4
GENERAL SPECIFICATIONS
TV Auto Shut off Function End Call Index Search SQPB CATV CM Skip(30sec x 6 Times) Comb Filter (2Lines) VM Circuit TV Monitor Program Extend Choke Coil Energy Star Protect of FBT Leak Circuit Zero Return Power On Memory Dirty Head V-chip USA V-chip CANADA V-chip Parental Lock (DVD Only) Auto Stop (Pause, and Resume Stop after 5min.) Video CD Playback SVCD Playback Overlay Graphics And Text Command List Entry Point Jump MP3 Playback WMA Playback JPEG Playback Digital Out (Dolby Digital) (MPEG) (PCM) (DTS) Down Mix Out (Dolby Digital) (DTS) TruSurround Screen Saver Picture Preference Auto Setup Audio DAC Copy (Disc to Tape) Owner's Manual Remote Control Unit Battery UM size x pcs OEM Brand Rod Antenna Poles Terminal Loop Antenna Terminal U/V Mixer 300 ohm to 75 ohm Antenna Adapter Antenna Change Plug DC Car Cord (Center+) AC Plug Adapter AC Cord AV Cord (2Pin-1Pin) Guarantee Card Registration Card ESP Card Warning Sheet Dew/AHC Caution Sheet Quick Set-up Sheet Circuit Diagram Service Facility List Important Safeguard Warranty Sheet Switch Front Power (Tact) Channel Up Channel Down Volume Up Volume Down Play (VCR) Stop / Eject (VCR) F.FWD/Cue (VCR) Rew/Rev (VCR) No No No No No No No No No No No No No No No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes No Yes No Yes Yes Yes No Yes No No Yes Yes Yes No No Yes No Yes Yes No No No No No Yes Yes Yes Yes Yes Yes Yes Yes No No No Yes No 192kHz / 24bit No Language w/Guarantee Card English / French Yes Yes No No
G-16
Accessories
G-17
Interface
A3-5
GENERAL SPECIFICATIONS
REC/OTR (VCR) Play (DVD) Stop (DVD) Skip+ /Search+ (DVD) Skip- /Search- (DVD) Open/Close (DVD) Input Select Main Power SW Power REC/OTR T-REC TV/VCR DVD Video Input Audio Input Other Terminal Video Input Audio Input Video Output Audio Output Digital Audio Output VHF/UHF Antenna Input AC Inlet Approx. W x D x H (mm) Net (Approx.) Gross (Approx.) Content Material Dimensions W x D x H(mm) Description of Origin Gift Box Material W/Color Photo Label Dimensions W x D x H(mm) Design Description of Origin Drop Test Natural Dropping At Height (cm) Container Stuffing(40' container) Cabinet Front Rear Jack Panel PCB Non-Halogen Eyelet Pb Free Lead-free Solder Other Cd Free Yes Yes Yes Yes Yes Yes No No Yes(Red) Yes(Red) Yes(Red) No No RCA x 1 RCA x 2(Stereo) HeadPhone (Stereo & Mono, 3.5mm) RCA x 1 RCA x 2(Stereo) RCA x1 RCA x 2(Stereo) Coaxial (DVD Only) F Type No 655 x 477 x 580 36.0kg (79.4lbs) 40.0kg (88.2lbs) No Yes Double/Brown No 766 x 579.5 x 711 As per Buyer's Yes 1 Corner / 3 Edges / 6 Surfaces 31 180 Sets PS 94V0 DECABROM PS 94V0 DECABROM No Yes No No No
Indicator
Terminals
Front
Rear
G-18 G-19 G-20
Set Size Weight Carton Master Carton
G-21
Material
G-22
Environment
A3-6
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS
1-1: BACK CABINET (Refer to Fig. 1-1) 1. Remove the 6 screws (1). 2. Remove the 2 screws (2). 3. Remove the Back Cabinet in the direction of arrow.
Front Cabinet
1-3: TV/DVD/VCR BLOCK (Refer to Fig. 1-3) 1. Remove the 2 screws (1). 2. Disconnect the following connectors: (CP303, CP404 and CP1704). 3. Remove the TV/DVD/VCR Block in the direction of arrow.
Front Cabinet
(1) (1)
(1)
(1) (1)
TV/DVD/VCR Block
(1)
Fig. 1-3
(1) (2) (2)
Back Cabinet
1-4: VCR DECK (Refer to Fig. 1-4) NOTE Do not remove the cable at the FE Head section. The FE Head may be damaged if you remove the cable by force. 1. 2. 3. 4. 5. 6. 7. 8. 9. Remove the 2 screws (1). Remove the VCR Top. Move the Cassette Holder Ass'y to the back side. Remove the 3 screws (2). Remove the 2 screws (3). Remove the Deck Shield Cover. Remove the screw (4). Remove the FE Head. Disconnect the following connectors: (CP101, CP4501, CP4502 and CP4503). 10. Remove the VCR Deck in the direction of arrow.
(1)
Fig. 1-1
1-2: CRT PCB (Refer to Fig. 1-2) CAUTION: BEFORE REMOVING THE ANODE CAP, DISCHARGE ELECTRICITY BECAUSE IT CONTAINS HIGH VOLTAGE. BEFORE ATTEMPTING TO REMOVE OR REPAIR ANY PCB, UNPLUG THE POWER CORD FROM THE AC SOURCE. 1. Remove the Anode Cap. (Refer to REMOVAL OF ANODE CAP) 2. Disconnect the following connectors: (CP603B, CP803 and CP805). 3. Remove the CRT PCB in the direction of arrow.
CRT PCB Front Cabinet
(2) (3)
Deck Shield Cover
(2) (3) (2)
(4)
FE Head
VCR Deck
(1) (1)
VCR Top Bottom Plate
Fig. 1-2
Fig. 1-4
B1-1
DISASSEMBLY INSTRUCTIONS
1-5: VCR PCB (Refer to Fig. 1-5) 1. Remove the 6 screws (1). 2. Remove the screw (2). 3. Remove the AV Jack Shield. 4. Disconnect the following connectors: (CP001, CP602B, CP604, CP2201, CP8001 and CP8002). 5. Remove the VCR PCB in the direction of arrow.
(1) (1) (1)
1-7: DVD PCB/DVD DECK (Refer to Fig. 1-7) 1. Make the short circuit on the position as shown Fig. 1-7 using a soldering. If you remove the DVD Deck with no soldering, the Laser may be damaged. 2. Remove the 4 screws (1). 3. Remove the DVD Top in the direction of arrow (A). 4. Remove the 2 screws (2). 5. Remove the DVD PCB in the direction of arrow (B). 6. Disconnect the following connectors: (CP2601, CP2602 and CP2603). 7. Remove the 4 screws (3). 8. Remove the DVD Deck in the direction of arrow (C). NOTE When the installation of the DVD Deck, remove all the soldering on the short circuit position after the connection of Pick Up PCB and DVD PCB connector.
(1)
AV Jack Shield VCR PCB
(1)
(1) (1) (2)
DVD Top
(1)
Bottom Plate
(1) (1) (2)
(A)
Fig. 1-5 1-6: VCR DECK (Refer to Fig. 1-6) 1. Remove the 4 screws (1). 2. Remove the DVD Block in the direction of arrow (A). 3. Remove the 2 screws (2). 4. Remove the Operation PCB in the direction of arrow (B).
(1) (1)
Angle Deck
(2)
Pick Up PCB (B)
(3) (3)
(3)
DVD Deck
(3)
(C) Make the short circuit using a soldering.
(1)
DVD Block
(1)
(A)
Fig. 1-7 1-8: DEFLECTION PCB (Refer to Fig. 1-8) 1. Remove the 2 screws (1). 2. Remove the 3 screws (2). 3. Remove the Deflection PCB in the direction of arrow.
(2) (2)
(B) Bottom Plate
(2) (2)
(1)
(1) (2)
Operation PCB
Fig. 1-6
Deflection PCB
Bottom Plate
Fig. 1-8
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 this position is locked.
NOTE 1. In case of the Locker R installation, check if the one position 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. 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.
Tension Arm Ass'y
Loading Motor
Worm Main Chassis
· Screw Torque: 3 ± 0.5kgf·cm
1
Fig. 2-6-A
Fig. 2-7-A
1
Tension Connect
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, slacken the wire as shown Fig. 2-6-C. 3. When installing the wires between Capstan DD Unit and Loading Motor, connect them correctly as shown Fig. 2-6-D.
1 3
Tension Band
Tension Spring Tension Arm Ass'y Tension Holder
2 4
19.2 ± 0.1mm
Fig. 2-7-B 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
Slacken the wire.
Tension Band Tension Connect Loading Motor
Fig. 2-7-C Fig. 2-6-C [OK] [NG]
Tension Connect Tension Band Pink Loading Motor Capstan DD Unit L2 Tension Connect Tension Band
Fig. 2-7-D
+ L1 Tension Connect
White
Fig. 2-6-D
Main Chassis
Fig. 2-7-E
B2-2
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. Unlock the support 1 and remove the AHC Ass'y. 2. Disconnect the following connector: (CD2001) 3. Remove the 3 screws 2. 4. Remove the Cylinder Unit Ass'y. NOTE 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.
Can be seen the hole of the Main Cam.
Fig. 2-10-B
2-11: A/C HEAD (Refer to Fig. 2-11-A) 1. 2. 3. 4. Remove the screw 1. Remove the A/C Head Base. Remove the 3 screws 2. Remove the A/C Head and A/C Head Spring.
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 (3) (2) (1) A/C Head Spring
2 2
2
· Screw Torque: 3 ± 0.5kgf·cm
1
A/C Head Base · Screw Torque: 5 ± 0.5kgf·cm
Fig. 2-13
Fig. 2-11-A B2-4
DISASSEMBLY INSTRUCTIONS
2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14) 1. 2. 3. 4. 5. Remove the Capstan Belt. Remove the screw 1. Remove the Capstan Holder. Remove the 3 screws 2. Remove the Capstan DD Unit. 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)
Pinch Roller Cam
Capstan Belt
Marker
1
Capstan Holder Capstan DD Unit
Main Cam
Fig. 2-15-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. Fig. 2-14
Main Rod
2
· Screw Torque: 4 ± 0.5kgf·cm
22
1
Main Loading Gear
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
Main Cam Tension Lever
Loading Arm T Unit
Loading Arm S Unit
2
Fig. 2-16-A
Pinch Roller Cam
Joint Gear
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
Fig. 2-15-A
Main Loading Gear Marker
Loading Arm T Unit
Loading Arm S Unit
Fig. 2-16-B B2-5
DISASSEMBLY INSTRUCTIONS
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
Inclined Base S Unit Cassette Guide Post
1
Inclined Base T Unit
P4 Cap
Clutch Ass'y
Ring Spring Coupling Gear Coupling Spring Clutch Gear · Screw Torque: 5 ± 0.5kgf·cm
Clutch Lever LED Reflector
2
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"
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)
Clutch Ass'y
P4 Cap
Cassette Opener
Fig. 2-18-B
Coupling Gear
Fig. 2-17-B 2-18: CASSETTE GUIDE POST/INCLINED BASE S/T UNIT/P4 CAP/LED REFLECTOR (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/T Unit. 4. Remove the screw 2. 5. Remove the LED Reflector.
[OK]
Cassette Guide Post
[NG]
Cassette Guide Post
Fig. 2-18-C
B2-6
DISASSEMBLY INSTRUCTIONS
3. REMOVAL OF DVD DECK PARTS
NOTE 1. Do not disassemble the DVD DECK PARTS except listed parts here. Minute adjustments are needed if the disassemble is done. If the repair is needed except listed parts, replace the DVD MECHA ASS'Y. 3-1: TRAY (Refer to Fig. 3-1-A) 1. Set the Tray opened. (Refer to the DISC REMOVAL METHOD AT NO POWER SUPPLY) 2. Unlock the 2 supports 1 and remove the Tray.
Main Frame Ass'y (3) Traverse Holder (3) Rack Loading (3)
NOTE 1. In case of the Main Chassis Ass'y, install it from (1) to (4) in order. (Refer to Fig. 3-2-B) 2. In case of the Main Chassis Ass'y installation, hook the wire on the Main Frame Ass'y as shown Fig. 3-2-C.
Main Frame Ass'y (Bottom Side)
(2)
(1) Main Chassis Ass'y
1
Tray
1
(4) (4)
Fig. 3-1-A NOTE 1. In case of the Tray installation, install them as the circled section of Fig. 3-1-B so that the each markers are met.
Main Frame Ass'y
Check Lock
Fig. 3-2-B
Main Frame Ass'y
Check Hook
Fig. 3-2-C
3-3: LOADING MOTOR PCB ASS'Y/ LOADING BELT (Refer to Fig. 3-3-A) 1. 2. 3. 4. 5. Remove the Loading Belt. Remove the screw 1. Remove the 2 screws 2. Remove the Loading Motor PCB Ass'y. Remove the Pulley Gear.
Loading Belt
Tray
Fig. 3-1-B 3-2: MAIN CHASSIS ASS'Y (Refer to Fig. 3-2-A) 1. 2. 3. 4. Remove the screw 1. Unlock the 2 supports 2. Remove the Insulator (R) from the Main Frame Ass'y. Remove the Main Chassis Ass'y.
1 2 2
Main Frame Ass'y
2
2
Main Frame Ass'y
Pulley Gear Loading Motor PCB Ass'y
1
· Screw Torque: 2.5 ± 0.3kgf·cm (Screw 1) · Screw Torque: 1.0 ± 0.3kgf·cm (Screw 2) Insulator (R) Main Chassis Ass'y
Fig. 3-3-A
· Screw Torque: 2.0 ± 0.5kgf·cm
Fig. 3-2-A B3-1
DISASSEMBLY INSTRUCTIONS
NOTE 1. In case of the Pulley Motor installation, check if the value of the Fig. 3-3-B is correct. 2. When installing the Loading Motor PCB Ass'y, install it correctly as Fig. 3-3-C. 3. In case of the Loading Motor PCB Ass'y installation, hook the wire on the Main Frame Ass'y as shown Fig. 3-3-C. 3-5: CLAMPER ASS'Y (Refer to Fig. 3-5-A) 1. Press the Clamper and rotate the Clamper Plate clockwise, then unlock the 3 supports 1. 2. Remove the Clamper Plate, Clamper Magnet and Clamper.
Clamper Plate Clamper Magnet
Pulley Motor
7.0 ± 0.1mm
Main Frame
Loading Motor
1
Safety surface for pressing of the insert.
1 1
Clamper
Fig. 3-5-A
Fig. 3-3-B NOTE 1. In case of the Clamper Ass'y installation, install correctly as Fig. 3-5-B.
The Lever should be position between A and B. Rack Loading A B
Clamper Plate
Clamper
No gap
Fig. 3-5-B
Check Hook Loading Motor PCB Ass'y
Fig. 3-3-C 3-6: TRAVERSE HOLDER/INSULATOR (F)/INSULATOR (R) (Refer to Fig. 3-6-A) 1. Remove the Traverse Holder. 2. Remove the 2 Insulator (F). 3. Remove the Insulator (R).
Insulator (R) Main Chassis Ass'y
3-4: RACK LOADING/MAIN GEAR/PULLEY GEAR (Refer to Fig. 3-4-A) 1. Press down the catcher 1 and slide the Rack Loading. 2. Unlock the support 2 and remove the Pulley Gear. 3. Remove the Main Gear.
Pulley Gear Main Gear
Rack Loading
Insulator (F) Traverse Holder
Main Frame Ass'y Insulator (F)
2
1
Fig. 3-4-A NOTE 1. In case of the Rack Loading installation, do not mesh it to the Main Gear as shown the Fig. 3-4-B.
Rack Loading Check Hook
Fig. 3-6-A NOTE 1. In case of the Insulator (F) installation, install correctly as Fig. 3-6-B. 2. In case of the Insulator (R) installation, install correctly as Fig. 3-6-C.
Insulator (F)
Traverse Holder
Main Gear
Fig. 3-4-B B3-2
Fig. 3-6-B
DISASSEMBLY INSTRUCTIONS
Insulator (R) Main Chassis Ass'y (Top Side)
~ FEED MOTOR ~ BLUE (4) ORANGE (3)
Switch PCB Ass'y
Fig. 3-6-C 3-7: RACK FEED ASS'Y/SWITCH PCB ASS'Y/FEED MOTOR (Refer to Fig. 3-7-A) 1. 2. 3. 4. 5. 6. 7. Remove the screw 1. Remove the Rack Feed Ass'y. Remove the screw 2. Remove the Switch PCB Ass'y. Remove the 2 screw 3. Remove the Feed Motor. Remove the Motor Gear.
1 2
Rack Feed Ass'y
~ SPINDLE MOTOR ~ BLACK (2) RED (1)
· Install wire from (1) to (4) in order.
Fig. 3-7-D
Main Chassis Ass'y (Bottom Side) Check Hook Check Hook Check Hook
3
3
Switch PCB Ass'y
Check Hook · Loosen the wire in the direction of the arrow. Motor Gear
Fig. 3-7-E
Main Chassis Ass'y Feed Motor · · · · Screw Screw Screw Screw Torque: Torque: Torque: Torque: 5.0 ± 3.0 ± 1.0 ± 3.5 ± 0.3kgf·cm 0.3kgf·cm 0.3kgf·cm 0.3kgf·cm (Screw (Screw (Screw (Screw 1) 2) 3) 4)
Fig. 3-7-A
NOTE 1. When pushing the Rack Feed in the direction of the arrow, it should be restored to the original position by the spring force. (Refer to Fig. 3-7-B) 2. In case of the Motor Gear installation, check if the value of the Fig. 3-7-C is correct. 3. When installing the wire of the Switch PCB Ass'y, install it correctly as Fig. 3-7-D. 4. After the assembly of the Main Chassis Ass'y, hook the wire on the Main Chassis Ass'y as shown Fig. 3-7-E.
Push Rack Feed Ass'y
Fig. 3-7-B
Motor Gear
6.0 ± 0.2mm
Feed Motor
Safety surface for pressing of the insert.
Fig. 3-7-C B3-3
DISASSEMBLY INSTRUCTIONS
4. REMOVAL OF ANODE CAP
Read the following NOTED items before starting work. * After turning the power off there might still be a potential voltage that is very dangerous. When removing the Anode Cap, make sure to discharge the Anode Cap's potential voltage. * Do not use pliers to loosen or tighten the Anode Cap terminal, this may cause the spring to be damaged. REMOVAL 1. Follow the steps as follows to discharge the Anode Cap. (Refer to Fig. 4-1.) Connect one end of an Alligator Clip to the metal part of a flat-blade screwdriver and the other end to ground. While holding the plastic part of the insulated Screwdriver, touch the support of the Anode with the tip of the Screwdriver. A cracking noise will be heard as the voltage is discharged. 3. After one side is removed, pull in the opposite direction to remove the other. NOTE Take care not to damage the Rubber Cap. INSTALLATION 1. Clean the spot where the cap was located with a small amount of alcohol. (Refer to Fig. 4-3.) NOTE Confirm that there is no dirt, dust, etc. at the spot where the cap was located.
Location of Anode Cap
GND on the CRT
Fig. 4-3 2. Arrange the wire of the Anode Cap and make sure the wire is not twisted. 3. Turn over the Rubber Cap. (Refer to Fig. 4-4.)
Screwdriver
Support Alligator Clip
CRT
GND on the CRT Fig. 4-1 2. Flip up the sides of the Rubber Cap in the direction of the arrow and remove one side of the support. (Refer to Fig. 4-2.) Rubber Cap Fig. 4-4 4. Insert one end of the Anode Support into the anode button, then the other as shown in Fig. 4-5.
CRT CRT Support Fig. 4-2
Support Fig. 4-5
5. Confirm that the Support is securely connected. 6. Put on the Rubber Cap without moving any parts.
B4-1
DISASSEMBLY INSTRUCTIONS
5. 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. 5-1.) 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. 5-3.) 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. 5-1
IC
2. Heat the IC leads using a blower type IC desoldering machine. (Refer to Fig. 5-2.) 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. 5-3 4. Peel off the Masking Tape. 5. Absorb the solder left on the pattern using the Braided Shield Wire. (Refer to Fig. 5-4.) 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. 5-4
Fig. 5-2
B5-1
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. 5-5.) 4. When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 5-8.)
Thin-tip Soldering Iron
IC
Soldering Iron
Fig. 5-8 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. 5-5 2. Supply the solder from the upper position of IC leads sliding to the lower position of the IC leads. (Refer to Fig. 5-6.)
Solder
Soldering Iron
IC
Supply soldering from upper position to lower position
Fig. 5-6 3. Absorb the solder left on the lead using the Braided Shield Wire. (Refer to Fig. 5-7.) NOTE Do not absorb the solder to excess.
Soldering Iron IC
Braided Shield Wire
Fig. 5-7
B5-2
KEY TO ABBREVIATIONS
A A/C ACC AE AFC AFT AFT DET AGC AMP ANT A.PB APC ASS'Y 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 X'TAL 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 SERVICE MODE, unplug AC cord till lost actual clock time. Then press and hold Vol (-) button of main unit and remocon key simultaneously. The both pressing of set key and remote control key will not be possible if clock has been set. To reset clock, either unplug AC cord and allow at least 5 seconds before Power On. Set Key VOL. (-) MIN Remocon Key 0 Standard Time (seconds) 2 Operations Releasing of V-CHIP PASSWORD. Initialization of the factory. 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, the POWER ON total hours, and PLAY/REC total hours. Horizontal position adjustment of OSD. NOTE: Also can be adjusted by using the Adjustment MENU. Refer to the "ELECTRICAL ADJUSTMENT" (OSD HORIZONTAL). Adjust the PG SHIFTER automatically. Refer to the "ELECTRICAL ADJUSTMENT" (PG SHIFTER). Adjust the PG SHIFTER manually. Refer to the "ELECTRICAL ADJUSTMENT" (PG SHIFTER). Adjusting of the Tracking to the center position. NOTE: Also can be adjusted by pressing the ATR button for more than 2 seconds during PLAY. POWER ON total hours and 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". VOL. (-) MIN 9 2 Display of the Adjustment MENU on the screen. Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment). 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. Releasing of PARENTAL LOCK. Refer to the "PARENTAL CONTROL - RATING LEVEL". NOTE: The function will only work without the setting of DVD disc at DVD mode.
VOL. (-) MIN
1
2
VOL. (-) MIN
2
2
VOL. (-) MIN VOL. (-) MIN
3 4
2 2
VOL. (-) MIN
5
2
VOL. (-) MIN
6
2
REC/OTR
4
2
STOP (DVD)
7
3
Set Key
Set Key
Standard Time (seconds) 2
Operations 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" Operations
VOL. (-) MIN
FF
Method Press the ATR button on the remote control for more than 2 seconds during PLAY.
Adjusting of the Tracking to the center position. Refer to the "MECHANICAL ADJUSTMENT" (GUIDE ROLLER) and "ELECTRICAL ADJUSTMENT" (PG SHIFTER).
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
POWER ON total hours and 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". The confirmation of using hours will not be possible if clock has been set. To reset clock, either unplug AC cord and allow at least 5 seconds before Power On. 1. Set the VOLUME to minimum. 2. Press both VOL. DOWN button on the set and the Channel button (6) on the remote control for more than 2 seconds. 3. After the confirmation of using hours, turn off the power.
INIT 00 0F POWER ON 0010 PLAY/REC 0003
Initial setting content of MEMORY IC. POWER ON total hours. 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: Initial Data setting will not be possible if clock has been set. To reset clock, either unplug AC cord and allow at least 5 seconds before Power On. · No need setting for the position of the mark @ due to the adjustment value. · No need setting for after INI 44 due to the adjustment value. INI 00 10 20 30 40 +0 0F 32 9A 05 88 +1 00 64 97 31 89 +2 F3 E3 8C 19 88 +3 02 52 9F 40 00 +4 C4 03 B7 00 00 +5 AD 87 85 @ --+6 20 00 91 @ --+7 22 48 B6 0F --Table 1 1. Enter DATA SET mode by setting VOLUME to minimum. 2. Press both VOL. DOWN button on the set and the Channel button (6) on the remote control for more than 2 seconds. ADDRESS and DATA should appear as FIG 1.
ADDRESS DATA
+8 86 00 1A 00 ---
+9 C1 F4 0B 23 ---
+A F0 13 3C FF ---
+B 08 4B 14 FF ---
+C A6 17 36 FF ---
+D A1 54 16 80 ---
+E 8F 83 26 88 ---
+F 45 B2 30 83 ---
INIT
00
0F
POWER ON 0010 PLAY/REC 0003
Fig. 1 3. ADDRESS is now selected and should "blink". Using the UP or DOWN button on the remote, step through the ADDRESS until required ADDRESS to be changed is reached. 4. Press ENTER to select DATA. When DATA is selected, it will "blink". 5. Again, step through the DATA using UP or DOWN button until required DATA value has been selected. 6. Pressing ENTER will take you back to ADDRESS for further selection if necessary. 7. Repeat steps 3 to 6 until all data has been checked. 8. When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input. After the data input, set to the initializing of shipping. 9. Turn POWER on. 10. Press both VOL. DOWN button on the set and the Channel button (1) on the remote control for more than 2 seconds. 11. After the finishing of the initializing of shipping, the unit will turn off automatically. 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)
JG185 Tentelometer
Ref. No. JG001 JG001A JG001Q JG001T JG001B JG001I JG001P JG001S JG002B JG002E JG002F JG005 JG153 JG022 JG024A JG100A JG185
Part No. APJG001000 APJG001A00 APJG001Q00 APJG001T00 APJG001B00 APJG001I00 APJG001P00 APJG001S00 APJG002B00 APJG002E00 APJG002F00 APJG005000 APJG153000 APJG022000 APJG024A00 APJG100A00 APJG185000
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) Tentelometer
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 Confirmation of Tape Tension on Playback
PREPARATION FOR SERVICING
NOTE: The both pressing of set key and remote control key will not be possible if clock has been set. To reset clock, either unplug AC cord and allow at least 5 seconds before Power On. 1. Set the VOLUME to minimum. 2. Press both VOL. DOWN button on the set and the FF button on the set for more than 2 seconds. (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.
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.) 1-2: 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
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. 1-1-A. 3. While turning the reel and confirm the following points. Check if the surface "A" of reel disk is lower than the surface "B" 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)
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 (JG185) 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 (JG185)
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 Ass'y 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 Ass'y 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 Ass'y/Clutch Ass'y S Reel side: S Reel/Tension Band/Tension Connect/Tension Arm Ass'y 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 TP4501 (Envelope) and CH-2 to TP102 (SW Pulse). 3. Press and hold the ATR 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 (TP4501) CH-1 Track CH-2 Track
Cassette Opener The position at STOP mode. Capstan DD Unit
Cassette Holder Ass'y
Fig. 1-4-A
Torque Gauge/Adapter (JG002F/JG002B)
Torque Gauge/Adapter (JG002E/JG002B)
CH-2 SW Pulse (TP102)
Fig. 2-1-A
Entrance S Reel Max A B Max Exit
T Reel
Fig. 1-4-B
A:B3:2
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 adj