5A3 A9C COVER MVT2137 Mvt2137sm
User Manual: MVT2137
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MVT2137 SERVICE MANUAL COLOR TELEVISION/VIDEO CASSETTE RECORDER ORIGINAL MFR’S VERSION A Design and specifications are subject to change without notice. SERVICING NOTICES ON CHECKING 1. KEEP THE NOTICES 6. AVOID AN X-RAY 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. 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. 4. PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING 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. 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) 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 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] In the condition that an explosion-proof cathoderay 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. 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. A1-1 TAPE REMOVAL METHOD AT NO POWER SUPPLY 1. Remove the VCR block from the main unit. (Refer to item 1 of the DISASSEMBLY INSTRUCTIONS.) 2. Remove the screw 1 of the Deck Chassis and remove the Loading Motor. 3. Rotate the Pinch Roller Cam in the direction of the arrow by hand to slacken the Video Tape. 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 1 Capstan DD Unit Pinch Roller Cam Main Cam Clutch Ass'y Main Chassis (Front Side) A1-2 CONTENTS SERVICING NOTICES ON CHECKING .................................................................................. HOW TO ORDER PARTS ....................................................................................................... TAPE REMOVAL METHOD AT NO POWER SUPPLY ............................................................ CONTENTS ................................................................................................................................. GENERAL SPECIFICATIONS .................................................................................................... DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS AND P. C. BOARDS ............................................ 2. REMOVAL OF DECK PARTS ............................................................................................ 3. REMOVAL OF ANODE CAP .............................................................................................. 4. 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 TV ............................................................................................................................................ Y/C/AUDIO/CCD/HEAD AMP ................................................................................................. MICON/IN/OUT/OPERATION ................................................................................................ PRINTED CIRCUIT BOARDS OPERATION ............................................................................................................................ MAIN/CRT ................................................................................................................................ SYSCON ................................................................................................................................. SCHEMATIC DIAGRAMS Y/C/AUDIO/CCD/HEAD AMP ................................................................................................. MICON ..................................................................................................................................... POWER ................................................................................................................................... IN/OUT ..................................................................................................................................... CHROMA/IF ............................................................................................................................ SOUND AMP ........................................................................................................................... HI-FI ......................................................................................................................................... IF .............................................................................................................................................. TV POWER .............................................................................................................................. DEFLECTION .......................................................................................................................... CRT ......................................................................................................................................... OPERATION ........................................................................................................................... INTERCONNECTION DIAGRAM ............................................................................................ WAVEFORMS ............................................................................................................................. MECHANICAL EXPLODED VIEWS ........................................................................................... CHASSIS EXPLODED VIEWS ................................................................................................... MECHANICAL REPLACEMENT PARTS LIST ......................................................................... CHASSIS REPLACEMENT PARTS LIST .................................................................................. ELECTRICAL REPLACEMENT PARTS LIST ........................................................................ A2-1 A1-1 A1-1 A1-2 A2-1 A3-1~A3-4 B1-1, B1-2 B2-1~B2-6 B3-1 B4-1, B4-2 C1-1, C1-2 C2-1 C3-1, C3-2 C4-1 D1-1 D1-2 D2-1~D2-4 D3-1~D3-6 E-1, E-2 E-3, E-4 E-5, E-6 F-1, F-2 F-3, F-4 F-5~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 H-1, H-2 I1-1, I1-2 I2-1, I2-2 J1-1 J2-1 J3-1, J3-3 GENERAL SPECIFICATIONS G-1 TV System CRT CRT Size / Visual Size CRT Type Deflection Magnetic Field BV/BH 13 inch / 335.4mmV Normal 90 degree +0.45G / 0.18G NTSC 1Speaker Front 1.5 x 2.5 Inch 8 ohm 1.5 W 1.0 W VHS Player / Recorder NTSC No OVD-7 Front 3 2 Head Color System Speaker Position Size Impedance MAX 10%(Typical) Sound Output G-2 VCR System System Video System Hi-Fi STEREO NTSC PB Deck Heads DECK Loading System Motor Video Head FM Audio Head No Audio /Control Erase(Full Track Erase) Tape Rec PAL Speed NTSC Play PAL NTSC Fast Forward / Rewind Time (Approx.) at 25oC with Cassette G-3 Tuning System Forward/Reverse Picture Search Frame Advance Slow Speed Broadcasting System Tuner and Receive CH NTSC or PAL-M Slow Variable Slow System Destination Tuning System Input Impedance CH Coverage Intermediate Frequency G-4 Signal Picture(FP) Sound(FS) FP-FS Preset CH Stereo/Dual TV Sound Tuner Sound Muting Video Signal Audio Signal Hi-Fi Audio Signal G-5 Power Power Source Power Consumption Protector G-6 Regulation G-7 Temperature G-8 G-9 Operating Humidity On Screen Menu Display Menu Input Level Output Level S/N Ratio (Weighted) Horizontal Resolution at SP Mode Input Level Output Level S/N Ratio at SP (Weighted) Harmonic Distortion at SP (1KHz) Typical Frequency Response at SP at LP at SLP Dynamic Range : More than 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 Dew Sensor Safety Radiation X-Radiation Operation Storage Type A3-1 Mono/Yes Yes SP/SLP SP/LP/SLP FF:4'50"/REW:2'30" at T-120 SP/LP/SLP=3x,5x/7x,9x/9x,15x US Sysytem 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 45.75MHz 41.25MHz 4.5MHz No No Yes 1 V p-p/75 ohm 1 V p-p/75 ohm 50 dB 220Lines -8dBm/50Kohm -8dBm/1Kohm 38dB 1.5 % 100Hz ~10kHz 100Hz ~4kHz 120V 60Hz 12V 65 W at 120V 60Hz 54W at 12V 4 W at 120V 60 Hz Yes Yes UL FCC DHHS +5oC ~ +40oC -20oC ~ +60oC Less then 80% RH Yes Character GENERAL SPECIFICATIONS Timer Rec Set Channel Setup Yes Yes Yes Yes Yes TV/CATV Auto ch Memory Add/Delete Guide ch Set No TV Setup V-chip Set On/Off Timer Set Picture Audio Sap On/Off Auto Repeat On/Off System Setup Clock Set Language Auto Clock On/Off Standard Time Daylight Saving Time Commercial Advance Marking On/Off Blueback On/Off Playback Auto/Manual Unmarked Tape Movie Advance Go To Movie Go To Preview G-CODE(or SHOWVIEW or PLUSCODE)No. Entry Clock CH/AV Tape Counter(Linear Counter) Tape Speed Sleep Time Stereo/Audio Output Bilingal SAP Control Volume Level Bright / 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 Index Muting Hi-Fi Repeat Zero Return DEW G-10 G-11 OSD Language Clock,Timer and Timer Back-up G-12 Remote Control Calendar Timer Events One Touch Recording Max Time OTPB Valid Time Sleep Timer Max Time Step On/Off Timer Program(On Tim / Off Tim) Auto Shut Off No Signal No Operation Timer Back-up (at Power Off Mode) Unit Glow in Dark Remocon Power Source Voltage(D.C) UM size x pcs Total Keys Keys Power 1 2 3 4 5 6 7 8 9 0 A3-2 Yes Yes Yes Yes No No Yes Yes Yes Yes Yes Yes Yes No No No No No No No No No Yes Yes Yes Yes Yes No No No Yes Yes Yes No (Symbol Mark) Yes Yes Yes Yes No Yes No Yes No Yes English French Spanish 1990/1/1 ~ 2081/12/31 8 prog./ 1 month 5 hours 120 min. 10 min. 1 prog. 15 min. 5 sec. RC-CG Yes 3V UM-4 x 2 pcs 41 Keys Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes GENERAL SPECIFICATIONS CH Up CH Down Volume Up Volume Down Input Select Play F.Fwd Rew Pause/Still Stop Rec/OTR Eject Counter Reset Speed Timer Rec TV Monitor Quick View Program Slow Auto Tracking Set/Tracking+ Set/Tracking Menu Enter Cancel Call TV/Caption/Text Sleep Timer Muting Zero Return CM Skip Audio Select G-13 G-14 Features Accessories Auto Head Cleaning Auto Tracking Auto Search 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 Reverse Slow One Touch Playback Auto CH Memory Closed Caption TV Auto Shut off Function End Call Index Search SQPB CATV CM Skip(30sec x 6 Times) Comb Filter TV Monitor Program Extend Choke Coil Energy Star Protect of FBT Leak Curcuit Dirty Head V-chip USA V-chip CANADA V-chip Power On Memory Zero Return CM Advance Movie Advance Owner's Manual Language w/Guarantee Card Remote Control Unit Battery UM size x pcs OEM Brand Rod Antenna Poles Terminal w/300 ohm to 75 ohm Antenna Adapter Loop Antenna Terminal U/V Mixer 300 ohm to 75 ohm Antenna Adapter A3-3 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 No Yes Yes No Yes Yes No Yes Yes No No Yes Yes Yes No No No Yes Yes No Yes No No Yes No No Yes No No Yes No No English / Spanish No Yes No Yes 2pole F type Yes No No No GENERAL SPECIFICATIONS G-15 Interface 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 Switch Indicator Key Light up Terminals Front Rear G-16 G-17 Set Size Weight G-18 Carton No Yes No No No Yes No No No No No No No No Power Play Pause/Still System Select One Touch Playback Channel Up Channel Down F.FWD/Cue Eject/Stop Main Power SW Volume Up Volume Down Rew/Rev Rec/OTR Input Select Power Rec/OTR T-Rec On Timer CS Rec/OTR One Touch Playback Play Video Input Audio Input Other Terminal Video Input Audio Input Video Output Audio Output Euro Scart Diversity Ext Speaker DC Jack 12V(Center +) VHF/UHF Antenna Input AC Inlet Approx. Net (Approx.) Gross (Approx.) Yes Yes No No No Yes Yes Yes Yes No Yes Yes Yes Yes No Red Red Red No No No No No W x D x H (mm) Master Carton Content Material Dimensions W x D x H(mm) Description of Origin Gift Box G-19 Cabinet Material Material Dimensions W x D x H(mm) Design Description of Origin Drop Test Natural Dropping At Height (cm) Container Stuffing(40' container) Cabinet Front Cabinet Rear Jack Panel A3-4 RCAx1 RCAx1 Head Phone(Stereo & Mono, 3.5mm) RCAx1 RCAx1 RCAx1 RCAx1 No No No Yes F Type No 362 x 370.5 x 382 12.5 kg (27.6 lbs) 14.5 kg (32.2 lbs) No Yes Double / Full Color Carton W/Photo 423 x 447 x 443 As per Buyer's Yes 1 Corner / 3 Edges / 6 Surfaces 62 700 Sets PS 94V0 DECABROM PS 94V0 DECABROM PS 94V0 DISASSEMBLY INSTRUCTIONS 1-3: TV/VCR BLOCK (Refer to Fig. 1-3) 1. REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS 1. Remove the 2 screws (1). 2. Disconnect the following connectors: (CP2201, CP4202, CP401 and CP403). 3. Unlock the support 2. 4. Remove the TV/VCR Block in the direction of arrow. 1-1: BACK CABINET (Refer to Fig. 1-1) 1. Remove the 4 screws (1). 2. Remove the screw (2). 3. Remove the 2 screws (3) which are used for holding the Back Cabinet. 4. Remove the AC cord from the AC cord hook (4). 5. Remove the Back Cabinet in the direction of arrow. (1) (1) Front Cabinet Front Cabinet (2) (1) UP TO RELEASE (1) TV/VCR Block Fig. 1-3 (2) 1-4: MAIN PCB (Refer to Fig. 1-4) (3) (1) 1. Remove the screw (1). 2. Remove the Main PCB Holder. 3. Remove the 2 screws (2). 4. Remove the 3 screws (3). 5. Remove the screw (4). 6. Remove the TV-PCB Holder. 7. Disconnect the following connectors:(CP502 and CP820). 8. Remove the Main PCB in the direction of arrow. (4) (3) Back Cabinet (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. (2) Main PCB (2) (3) (3) (3) 1. Remove the Anode Cap. (Refer to REMOVAL OF ANODE CAP) 2. Disconnect the following connectors: (CP801 and CP850). 3. Remove the CRT PCB in the direction of arrow. Main PCB Holder (1) (4) Front Cabinet CRT PCB TV- PCB Holder VCR Block Fig. 1-4 Fig. 1-2 B1-1 DISASSEMBLY INSTRUCTIONS 1-5: JDECK SHIELD PLATE AND BOTTOM SHIELD (Refer to Fig. 1-5) 1. Remove the 2 screws (1). 2. Remove the screw (2). 3. Remove the screw (3). 4. Remove the Deck Shield Plate in the direction of arrow (A). 5. Remove the screw (4). 6. Remove the Bottom Shield in the direction of arrow (B). 1-7: JACK PLATE AND SYSCON PCB (Refer to Fig. 1-7) 1. Remove the screw (1). 2. Remove the Syscon PCB in the direction of arrow (A). 3. Unlock the 2 supports (2). 4. Remove the Jack Plate in the direction of arrow (B). Jack Plate Syscon PCB Deck Shield Plate (2) (B) (2) (1) (2) (1) (1) (3) (A) (A) VCR Block (B) Deck Holder Fig. 1-7 Fig. 1-5 (4) Bottom Shield 1-6: DECK CHASSIS (Refer to Fig. 1-6) 1. Remove the screw (1). 2. Remove the Plate Cover Light. 3. Remove the 3 screws (2). 4. Disconnect the following connectors: (CP605, CP1001, CP4001, CP4002 and CP4003). 5. Remove the Deck Chassis and Shield Cover Deck in the direction of arrow. (1) (2) Shield Cover Deck Plate Cover Light (2) (2) Deck Chassis Syscon PCB Fig. 1-6 B1-2 DISASSEMBLY INSTRUCTIONS 2. REMOVAL OF DECK PARTS NOTE 2-1: TOP BRACKET (Refer to Fig. 2-1) 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. 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 Check if these positions are locked. Cassette Side R (1) (1) Top Bracket (2) Fig. 2-3-B (2) Main Chassis 2-4: LINK UNIT (Refer to Fig. 2-4) Main Chassis 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. 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. Main Chassis Link Unit Cassette Side R Locker R Main Chassis (B) (A) Link Unit (1) Main Chassis Fig. 2-4 Link Ass'y 2-5: LINK LEVER/FLAP LEVER/BOT COVER (Refer to Fig. 2-5) Main Chassis Cassette Side L Fig. 2-2 1. 2. 3. 4. 5. 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. Unlock the support (1). Remove the BOT Cover. Extend the support (2). Remove the Link Lever. Remove the Flap Lever. Locker Spring (1) (1) (1) BOT Cover Cassette Holder (2) (2) Locker R Link Lever (1) Flap Lever (1) Fig. 2-5 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) Tension Arm Ass'y 1. Remove the screw (1). 2. Remove the Loading Motor. 3. Remove the Worm. Fig. 2-7-A Loading Motor (1) Worm Tension Connect Tension Band (1) (3) Main Chassis Tension Spring € Screw Torque: 3 ± 0.5kgf€cm Tension Arm Ass'y Tension Holder (1) Fig. 2-6-A (2) (4) 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. Fig. 2-7-B NOTE 19.2 ± 0.1mm 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 [OK] Cassette Opener Tension Connect Tension Band Fig. 2-6-C [NG] Tension Connect Tension Band 2-7: TENSION ASS'Y (Refer to Fig. 2-7-B) Fig. 2-7-D 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 Connect Main Chassis B2-2 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. Idler Gear Idler Arm Ass'y (B) S Reel T Brake Band (A) (1) Hook section (1) T Reel (A) T Brake Arm (1) T Brake Spring (1) Fig. 2-8-A Fig. 2-9-A NOTE 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. 1. In case of the T Brake Band installation, install correctly as Fig. 2-8-B. [OK] T Brake Arm T Brake Band T Brake Arm [NG] T Brake Band Fig. 2-8-B Big Hole (S Reel) 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. Small Hole (T Reel) Fig. 2-9-B [OK] Clutch Gear Idler Arm Ass'y 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 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. Cassette Opener (1) Spring Position Fig. 2-11-B 2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12) Pinch Roller Block 1. Remove the screw (1). 2. Remove the FE Head. P5 Arm Ass'y (1) 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 € Screw Torque: 5 ± 0.5kgf€cm € The FE Head is not installed on the Video Cassette Player. Can be seen the hole of the Pinch Roller Cam. 2-13: AHC ASS'Y/CYLINDER UNIT ASS'Y (Refer to Fig. 2-13) P5 Arm Ass'y Can be seen the hole of the Main Cam. 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. Fig. 2-10-B 2-11: A/C HEAD (Refer to Fig. 2-11-A) 1. 2. 3. 4. Fig. 2-12 NOTE 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. 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) (2) Cylinder Unit Ass'y AHC Ass'y (3) (1) (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 (Screw (1)) Fig. 2-11-A B2-4 Fig. 2-13 DISASSEMBLY INSTRUCTIONS 2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14-A) 2-15: MAIN CAM/PINCH ROLLER CAM/JOINT GEAR (Refer to Fig. 2-15-A) 1. Remove the Capstan Belt. 2. Remove the 3 screws (1). 3. Remove the Capstan DD Unit. 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 Capstan Belt Capstan DD Unit (2) Pinch Roller Cam Joint Gear Fig. 2-15-A (1) €Screw Torque: 4 ± 0.5kgf€cm (1) (1) NOTE Fig. 2-14-A 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) Pinch Roller Cam Applied position of silicon bond 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 ASS'Y (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 Ass'y and Loading Arm T Ass'y. Silicon Bond Main Chassis (1) Main Rod Main Loading Gear Capstan DD Unit Fig. 2-14-C Loading Arm T Ass'y Tension Lever Loading Arm S Ass'y Fig. 2-16-A B2-5 DISASSEMBLY INSTRUCTIONS 2-18: CASSETTE GUIDE POST/INCLINED BASE S/T UNIT/P4 CAP (Refer to Fig. 2-18-A) NOTE 1. When you install the Loading Arm S Ass'y, Loading Arm T Ass'y and Main Loading Gear, align each marker. (Refer to Fig. 2-16-B) 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. Marker Main Loading Gear Cassette Guide Post Marker (1) Inclined Base S Unit Loading Arm T Unit Inclined Base T Unit P4 Cap Loading Arm S Unit 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. 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. (1) Clutch Ass'y Ring Spring "A" Coupling Gear "B" Clutch Lever Coupling Spring Clutch Gear P4 Cap Cassette Opener Fig. 2-18-B Fig. 2-17-A NOTE [OK] 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) Cassette Guide Post Clutch Ass'y [NG] Cassette Guide Post Coupling Gear Fig. 2-18-C Fig. 2-17-B B2-6 DISASSEMBLY INSTRUCTIONS 3. After one side is removed, pull in the opposite direction to remove the other. 3. REMOVAL OF ANODE CAP Read the following NOTED items before starting work. NOTE * 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. 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. 3-3.) REMOVAL 1. Follow the steps as follows to discharge the Anode Cap. (Refer to Fig. 3-1.) 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. 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. 3-3 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. 3-4.) CRT Screwdriver Support Alligator Clip GND on the CRT Fig. 3-4 Fig. 3-1 4. Insert one end of the Anode Support into the anode button, then the other as shown in Fig. 3-5. 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. 3-2.) Rubber Cap CRT CRT Support Fig. 3-2 Support Fig. 3-5 5. Confirm that the Support is securely connected. 6. Put on the Rubber Cap without moving any parts. B3-1 DISASSEMBLY INSTRUCTIONS 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. 4-3.) 4. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC REMOVAL NOTE 1. Put the Masking Tape (cotton tape) around the Flat Package IC to protect other parts from any damage. (Refer to Fig. 4-1.) 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. NOTE Masking is carried out on all the parts located within 10 mm distance from IC leads. Masking Tape (Cotton Tape) Blower type IC desoldering machine IC Tweezers Fig. 4-1 IC Fig. 4-3 2. Heat the IC leads using a blower type IC desoldering machine. (Refer to Fig. 4-2.) 4. Peel off the Masking Tape. 5. Absorb the solder left on the pattern using the Braided Shield Wire. (Refer to Fig. 4-4.) 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. 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. 4-2 B4-1 Fig. 4-4 DISASSEMBLY INSTRUCTIONS INSTALLATION 4. When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 4-8.) 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. 4-5.) Thin-tip Soldering Iron IC Soldering Iron Fig. 4-8 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. Solder temporarily Solder temporarily Fig. 4-5 2. Supply the solder from the upper position of IC leads sliding to the lower position of the IC leads. (Refer to Fig. 4-6.) Solder IC 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. Soldering Iron Supply soldering from upper position to lower position Fig. 4-6 3. Absorb the solder left on the lead using the Braided Shield Wire. (Refer to Fig. 4-7.) NOTE Do not absorb the solder to excess. Soldering Iron IC Braided Shield Wire Fig. 4-7 B4-2 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 K L M N O P R S C1-1 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 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 Remocon Key VOL. (-) MIN 0 VOL. (-) MIN 1 VOL. (-) MIN 2 Horizontal position adjustment of OSD. NOTE: Also can be adjusted by using the Adjustment MENU. Refer to the "ELECTRICAL ADJUSTMENT" (OSD HORIZONTAL). VOL. (-) MIN 3 Adjust the PG SHIFTER automatically. Refer to the "ELECTRICAL ADJUSTMENT" (PG SHIFTER). VOL. (-) MIN 4 Adjust the PG SHIFTER manually. Refer to the "ELECTRICAL ADJUSTMENT" (PG SHIFTER). VOL. (-) MIN 5 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. VOL. (-) MIN 6 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. 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 8 Writing of EEPROM initial data. NOTE: Do not use this for the normal servicing. VOL. (-) MIN 9 Display of the Adjustment MENU on the screen. Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment). 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 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 500 hours 1,000 hours 1,500 hours 2,000 hours 2,500 hours Notes Audio Control Head Clean those parts in contact with the tape. Full Erase Head (Recorder only) Capstan Belt Pinch Roller Clean the rubber, and parts which the rubber touches. Capstan DD Unit Loading Motor Tension Band T Brake Band Clutch Ass'y Idler Arm Ass'y Capstan Shaft Tape Running Guide Post Replace when rolling becomes abnormal. Clean the Head Cylinder Unit : Clean : Check it and if necessary, replace it. 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. While holding down VOLUME button on front cabinet, press key 6 on remote control simultaneously. 3. After the confirmation of using hours, turn off the power. INIT 00 83 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 2. TAPE RUNNING SYSTEM NOTE When cleaning the tape transport system, use the gauze moistened with isopropyl alcohol. 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. 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.) 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.) 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. Audio Control Head Cylinder 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 or alternatively, discharge backup capacitor. INI +0 +1 +2 +3 +4 +5 +6 +7 +8 +9 +A +B +C +D +E +F 00 88 0A 62 63 43 14 34 09 51 38 30 66 00 40 00 10 10 B2 9A 92 93 00 00 30 05 08 00 A9 0F 94 3E 06 04 20 06 29 01 17 10 60 32 3A DA D7 10 15 20 25 26 27 30 28 29 2A 2C 2E 30 32 34 36 38 3A 3C 3E 40 41 42 40 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F 50 51 52 50 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F 60 61 62 60 63 64 66 69 6D 74 79 7C 7E 7F Table 1 1. Enter DATA SET mode by setting VOLUME to minimum. 2. While holding down VOLUME button on front cabinet, press key 6 on remote control for more than 2 seconds. ADDRESS and DATA should appear as FIG 1. ADDRESS DATA INIT 00 03 POWER ON 0010 PLAY/REC 0003 Fig. 1 3. ADDRESS is now selected and should "blink". Using the FF or REW 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 FF or REW 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. 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 (VN 2 S-LI6 3 ) JG001A (VN 2 S-CO13 ) JG001Q (VN 2 S-LI6 3 H) JG001T (VN 2 S-X6 3 ) (For 4 heads model) VHS Alignment Tape JG001B (VN 1 S-LI6 3 ) JG001I (VN 1 S-CO13 ) JG001P (VN 1 S-LI6 3 H) JG001S (VN 1 S-X6 3 ) 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 JG162E Cable (13 Pins) JG162D Cable (11 Pins) JG162Y Cable (5 Pins) Tentelometer Ref. No. Part No. Parts Name JG001 APJG001000 VHS Alignment Tape (For 2 heads model) Monoscope, 6KHz Remarks JG001A APJG001A00 VHS Alignment Tape (For 2 heads model) Color Bar, 1KHz JG001Q APJG001Q00 VHS Alignment Tape (For 2 heads model) Hi-Fi Audio JG001T APJG001T00 VHS Alignment Tape (For 2 heads model) X Value Adjustment JG001B APJG001B00 VHS Alignment Tape (For 4 heads model) Monoscope, 6KHz JG001I APJG001I00 VHS Alignment Tape (For 4 heads model) Color Bar, 1KHz JG001P APJG001P00 VHS Alignment Tape (For 4 heads model) Hi-Fi Audio JG001S APJG001S00 VHS Alignment Tape (For 4 heads model) X Value Adjustment JG002B APJG002B00 Adapter VSR Torque, Brake Torque (S Reel/T Reel Ass'y) JG002E APJG002E00 Dial Torque Gauge (10~90gf•cm) Brake Torque (T Reel Ass'y) JG002F APJG002F00 Dial Torque Gauge (60~600gf•cm) VSR Torque, Brake Torque (S Reel) JG005 APJG005000 Post Adjustment Screwdriver Guide Roller Adjustment JG153 APJG153000 X Value Adjustment Screwdriver X Value Adjustment JG022 APJG022000 Master Plane Reel Disk Height Adjustment JG024A APJG024A00 Reel Disk Height Adjustment Jig Reel Disk Height Adjustment JG100A APJG100A00 Torque Tape (VHT-063) Playback Torque, Back Tension Torque During Playback JG154 APJG154000 Cable Used to connect the test point of SERVICE and GROUND JG162E APJG162E00 Cable (13 Pins) Used to connect the Syscon PCB and Main PCB JG162D APJG162D00 Cable (11 Pins) Used to connect the Syscon PCB and Main PCB JG162Y APJG162Y00 Cable (5 Pins) Used to connect the Syscon PCB and CRT PCB D1-1 PREPARATION FOR SERVICING How to use the Servicing Fixture 1. Unplug the connector CP2201, CP4202, CP502, CP820 and CP850, then remove the VCR Block from the set. 2. Connect as shown in the below figure using the Service Fixture. • Connect the Syscon PCB to the Main PCB with the cable JG162D and JG162E. • Connect the Syscon PCB to the CRT PCB with the cable JG162Y. 3. Remove the Operation PCB from the set, then connect it with the Syscon PCB. If necessary, connect CD351. (Front A/V Jack Input Terminal) 4. Short circuit between TP1001 and Ground with the cable JG154. (The BOT, EOT and the Reel Sensor do not work and the deck can be operated without a cassette tape.) 5. 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. Front Cabinet CRT PCB CP850 CP502 JG162E JG162Y CP820B CP820 Main PCB CP805B JG162D Syscon PCB CP810B TP1001 JG154 CP2201 To Ground CD757 Operation PCB CD351 D1-2 MECHANICAL ADJUSTMENTS 1-2: CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION 1. CONFIRMATION AND ADJUSTMENT Read the following NOTES before starting work. 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. • 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 "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. Standard line of Main Chassis Tension Arm 0.5mm (Adjusting range) Fig. 1-2-A Adjusting section for the Tension Arm position Master Plane (JG022) Tension Band Reel Disk Height Adjustment Jig (JG024A) The Tension Arm top will move to the inside direction of the Main Chassis. The Tension Arm top will move to the outside direction of the Main Chassis. Bend 1-3: CONFIRMATION OF PLAYBACK TORQUE AND BACK TENSION TORQUE DURING PLAYBACK Fig. 1-1-A Master Plane (JG022) 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. Reel Disk Height Adjustment Jig (JG024A) Reel Disk • USING A CASSETTE TYPE TORQUE TAPE (JG100A) (B) 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. 10(+0.2, -0)mm (C) (A) Height Adjustment Washer 2.6x4.7xT0.13 2.6X4.7xT0.25 Fig. 1-2-B Tentelometer Fig. 1-1-B Video Tape P1 Post D2-1 Guide Roller Fig. 1-3 MECHANICAL ADJUSTMENTS 1-4: CONFIRMATION OF VSR TORQUE NOTE 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. If the torque is out of the range, replace the following parts. NOTE Check item Replacement Part 1-4 Idler Ass'y/Clutch Ass'y 1-5 Install the Torque Gauge on the reel disk firmly. Press the REW button to turn the reel disk. 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 1-5: CONFIRMATION OF REEL BRAKE TORQUE (S Reel Brake) (Refer to Fig. 1-4-B) 2. CONFIRMATION AND ADJUSTMENT OF TAPE RUNNING MECHANISM 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. 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. (T Reel Brake) (Refer to Fig. 1-4-B) 2-1: GUIDE ROLLER 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. 1. Playback the VHS Alignment Tape (JG001 or JG001B). (Refer to SERVICING FIXTURE AND TOOLS) 2. Connect CH-1 of the oscilloscope to TP4001 (Envelope) and CH-2 to TP1002 (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) The position at FF mode. Pinch Roller Block Stop at this position. Cassette Opener The position at STOP mode. Capstan DD Unit NOTE Cassette Holder Ass'y After adjustment, confirm and adjust A/C head. (Refer to item 2-2) Fig. 1-4-A Torque Gauge/Adapter (JG002F/JG002B) CH-1 Envelope (TP4001) CH-1 Track Torque Gauge/Adapter (JG002E/JG002B) CH-2 Track CH-2 SW Pulse (TP1002) Fig. 2-1-A Entrance Exit S Reel Max T Reel A B Max Fig. 1-4-B A : B >3 : 2 D2-2 Fig. 2-1-B MECHANICAL ADJUSTMENTS 2-2: CONFIRMATION AND ADJUSTMENT OF AUDIO/ CONTROL HEAD 2-3: TAPE RUNNING ADJUSTMENT (X VALUE ADJUSTMENT) When the Tape Running Mechanism does not work well, adjust the following items. 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 TP1002, CH-2 to TP4001 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. 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 Envelope P4 Post (1) CH-3 Audio (2) Fig. 2-3 Stamp Mark 2-4: CONFIRM HI-FI AUDIO (Hi-Fi model only) Fig. 2-2-A 1. Connect CH-1 of the oscilloscope to TP1002 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 1. Tension Connect 2. Tension Arm 3. Guide Roller 4. Audio/Control Head 5. X value adjustment driver hole 8 6. 7. 8. 9. 10. D2-4 P4 Post T Brake Spring T Reel S Reel Adjusting section for the Tension Arm position ELECTRICAL ADJUSTMENTS 1. BEFORE MAKING ELECTRICAL ADJUSTMENTS 2. BASIC ADJUSTMENTS Read and perform these adjustments when repairing the circuits or replacing electrical parts or PCB assemblies. 2-1: PG SHIFTER (VCR SECTION) 1. Connect CH-1 on the oscilloscope to TP1002 and CH-2 to J4202. 2. Playback the alignment tape. (JG001A) 3. Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center. 4. Press the VOL. DOWN button on the set and the channel button (3) on the remote control simultaneously until the indicator REC disappears. If the indicator REC disappears, adjustment is completed. CAUTION • Use an isolation transformer when performing any service on this chassis. • Before removing the anode cap, discharge electricity because it contains high voltage. • When removing a PCB or related component, after unfastening or changing a wire, be sure to put the wire back in its original position. • When you exchange IC and Transistor for a heat sink, apply the silicon grease (YG6260M) on the contract 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.) (If the above adjustments doesn't work well:) 5. Press the VOL. DOWN button on the set and the channel button (3) on the remote control simultaneously until the indicator REC disappears. 6. When the REC indicator is blinking, press both VOL. DOWN button on the set and the channel button (4) on the remote control simultaneously and adjust the Tracking +/- button until the arising to the down of Head Switching Pulse becomes 6.5 ± 0.5H. (Refer to Fig. 2-1-A, B) 7. Press the Tracking Auto button. On-Screen Display Adjustment 1. Unplug the AC plug for more than 5 seconds to set the clock to the non-setting state.Then, set the volume level to minimum. 2. Press the VOL. DOWN button on the set and the Channel button (9) on the remote control simultaneously to appear the adjustment mode on the screen as shown in Fig. 1-1. CH-2 TV 6.5H CH-1 Fig. 2-1-A 00 OSD 15 Fig. 1-1 CH-2 3. Use the Channel UP/DOWN button or Channel button (0-9) on the remote control to select the options shown in Fig. 1-2. 4. Press the MENU button on the remote control to end the adjustments. NO. 00 01 02 03 04 05 06 07 08 09 10 11 12 FUNCTION OSD H CUT OFF RF DELAY VIF VCO H VCO H PHASE V SIZE V SHIFT R DRIVE B DRIVE R BIAS G BIAS B BIAS NO. 13 14 15 16 17 18 19 20 21 22 23 24 CH-1 6.5H Fig. 2-1-B FUNCTION BRIGHTNESS CONTRAST COLOR TINT SHARPNESS FM LEVEL LEVEL SEPARATION 1 SEPARATION 2 TEST MONO TEST STEREO X-RAY TEST 2-2: VCO FREERUN 1. Place the set with Aging Test for more than 10 minutes. 2. Connect the digital voltmeter between the pin 7 of CP602 and the pin 1 (GND) of CP602. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (03) on the remote control to select "VIF VCO". 4. Press the VOL. UP/DOWN button on the remote control until the digital voltmeter is 2.5V. Fig. 1-2 D3-1 ELECTRICAL ADJUSTMENTS 2-3: RF AGC 2-8: SUB BRIGHTNESS 1. Receive a 63dB monoscope pattern. 2. Connect the digital voltmeter between the pin 5 of CP602 and the pin 1 (GND) of CP602. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (02) on the remote control to select "RF DELAY". 4. Press the VOL. UP/DOWN button on the remote control until the digital voltmeter is 2.65 ± 0.05V. 1. Receive the monoscope pattern. (RF Input) 2. Using the remote control, set the brightness and contrast to normal position. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (13) on the remote control to select "BRIGHTNESS". 4. Press the VOL. UP/DOWN button on the remote control until the white 10% starting to be visible. 5. Receive the monoscope pattern. (Audio Video Input) 6. Press the INPUT SELECT button on the remote control to set to the AV mode. Then perform the above adjustments 2~4. (TV SECTION) 2-4: CONSTANT VOLTAGE 1. Input DC12V to DC Jack and turn the Power ON. 2. Connect the digital voltmeter between the FH503 or FH504 and the GND. 3. Set condition is AV MODE without signal. 4. Adjust the VR501 until the DC voltage is 134 ± 0.5V. 5. Input AC120V to AC cord and remove the DC Jack cord. Check if the Power is ON before doing the above procedure. 6. Adjust the VR502 until the DC voltage is 135 ± 0.5V. 1. Receive the monoscope pattern. 2. Activate the adjustment mode display of Fig. 1-1 and press the channel button (05) on the remote control to select "H PHASE". 3. Press the VOL. UP/DOWN button on the remote control until the SHIFT quantity of the OVER SCAN on right and left becomes minimum. 2-5: CUT OFF 2-10: VERTICAL SHIFT 1. Adjust the unit to the following settings. R.DRIVE=64, B.DRIVE=64, R.BIAS=128, G.BIAS=128, B.BIAS=128, SUB BRIGHT=128, SUB CONTRAST=100. 2. Place the set with Aging Test for more than 15 minutes. 3. Set condition is AV MODE without signal. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (01) on the remote control to select "CUT OFF". 5. Adjust the Screen Volume until a dim raster is obtained. 1. Receive the center cross signal from the Pattern Generator. 2. Using the remote control, set the brightness and contrast to normal position. 3. Activate the adjustment mode display of Fig. 1-1 and press the channel button (07) on the remote control to select "V SHIFT". 4. Check if the step No. V SHIFT is "0". 5. Adjust the VR402 until the horizontal line becomes fit to the notch of the shadown mask. 2-9: HORIZONTAL PHASE 2-6: WHITE BALANCE 2-11: VERTICAL SIZE NOTE: Adjust after performing CUT OFF adjustment. 1. Receive the center cross signal from the Pattern Generator. 2. Activate the adjustment mode display of Fig. 1-1 and press the channel button (06) on the remote control to select "V SIZE". 3. Press the VOL. UP/DOWN button on the remote control until the rectangle on the center of the screen becomes square. 4. Receive a broadcast and check if the pictrue is mormal. 1. Place the set with Aging Test for more than 15 minutes. 2. Receive the white 100% signal from the Pattern Generator. 3. Using the remote control, set the brightness and contrast to normal position. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (10) on the remote control to select "R.BIAS". 5. Using the VOL. UP/DOWN button on the remote control, adjust the R.BIAS. 6. Press the CH. UP/DOWN button on the remote control to select the "R.DRIVE", "B.DRIVE", "G.BIAS" or "B.BIAS". 7. Using the VOL. UP/DOWN button on the remote control, adjust the R.DRIVE, B.DRIVE, G.BIAS or B.BIAS. 8. Perform the above adjustments 6 and 7 until the white color is looked like a white. 2-12: SUB CONTRAST 1. Activate the adjustment mode display of Fig. 1-1 and press the channel button (14) on the remote control to select "CONTRAST". 2. Press the VOL. UP/DOWN button on the remote control until the contrast step No. becomes "100". 3. Receive the color bar pattern. (Audio Video Input) 4. Press the INPUT SELECT button on the remote control to set to the AV mode. Then perform the above adjustments 1, 2. 2-7: FOCUS 1. Receive the monoscope pattern. 2. Turn the Focus Volume fully counterclockwise once. 3. Adjust the Focus Volume until picture is distinct. D3-2 ELECTRICAL ADJUSTMENTS 2-13: SUB TINT 2-15: OSD HORIZONTAL 1. Receive the color bar pattern. (RF Input) 2. Connect the oscilloscope to TP803 (R810). 3. Using the remote control, set the brightness, contrast, color and tint to normal position. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (16) on the remote control to select "TINT". 5. Press the VOL. UP/DOWN button on the remote control until the section "A" becomes a straight line. (Refer to Fig. 2-2) 6. Receive the color bar pattern. (Audio Video Input) 7. Press the INPUT SELECT button on the remote control to set to the AV mode. Then perform the above adjustments 2~5. 1. Activate the adjustment mode display of Fig. 1-1. 2. Press the VOL. UP/DOWN button on the remote control until the difference of A and B becomes minimum. (Refer to Fig. 2-4) TV 00 OSD White 0% A 15 B Fig. 2-4 2-16: H VCO 1. Receive the monoscope pattern. (RF Input) 2. Activate the adjustment mode display of Fig. 1-1 and press the channel button (04) on the remote control to select "H VCO". 3. Check if the step No. of H VCO is "4". "A" Fig. 2-2 White 100% 2-14: SUB COLOR 1. Receive the color bar pattern. (RF Input) 2. Connect the oscilloscope to TP801 (R802). 3. Using the remote control, set the brightness, contrast, color and tint to normal position. 4. Activate the adjustment mode display of Fig. 1-1 and press the channel button (15) on the remote control to select "COLOR". 5. Adjust the VOLTS RANGE VARIABLE knob of the oscilloscope until the range between white 100% and 0% is set 5 scales on the screen of the oscilloscope. 6. Press the VOL. UP/DOWN button on the remote control until the red color level is adjusted to 110% ± 10% of the white level. (Refer to Fig. 2-3) 7. Receive the color bar pattern. (Audio Video Input) 8. Press the INPUT SELECT button on the remote control to set to the AV mode. Then perform the above adjustments 2~6. White 0% 2-17: SUB SHARPNESS 1. Receive the monoscope pattern. 2. Activate the adjustment mode display of Fig. 1-1 and press the channel button (17) on the remote control to select "SHARPNESS". 3. Check if the step No. of SHARPNESS is "40". 4. Press the INPUT SELECT button on the remote control to set to the AV mode. Then perform the above adjustments 1, 2. 2-18: VERTICAL LINEALITY 1. Receive the monoscope pattern. 2. Using the remote control, set the brightness and contrast, to normal position. 3. Adjust the VR401 of the OVER SCAN on upside and downside becomes minimum. 2-19: E-E LEVEL 1. Receive the color bar pattern. (Audio Video Input) 2. Connect the oscilloscope to TP4201. 3. Check if the VIDEO OUTPUT LEVEL is 1 ± 0.2Vp-p. (Refer to Fig. 2-5) 0% 100% 110 ± 10% White 100% Red Level 1.0Vp-p Fig. 2-3 Fig. 2-5 D3-3 ELECTRICAL ADJUSTMENTS 2-20: COLOR LEVEL 1. Receive the color bar pattern. (RF Input) 2. Connect the oscilloscope to TP4201. 3. When setting to the Y-LEVEL 100%, check if the MAGENTA is 45 ± 10%. (Refer to Fig. 2-6) 100% 45% Magenta Fig. 2-6 D3-4 ELECTRICAL ADJUSTMENTS 3-3: STATIC CONVERGENCE 3. PURITY AND CONVERGENCE ADJUSTMENTS NOTE Adjust after performing adjustments in section 3-2. NOTE 1. Receive the crosshatch pattern from the color bar generator. 2. Combine red and blue of the 3 color crosshatch pattern on the center of the screen by adjusting the pair of 4 pole magnets. 3. Combine red/blue (magenta) and green by adjusting the pair of 6 pole magnets. 1. Turn the unit on and let it warm up for at least 30 minutes before performing the following adjustments. 2. Place the CRT surface facing east or west to reduce the terrestrial magnetism. 3. Turn ON the unit and demagnetize with a Degauss Coil. 3-1: STATIC CONVERGENCE (ROUGH ADJUSTMENT) 1. Tighten the screw for the magnet. Refer to the adjusted CRT for the position. (Refer to Fig. 3-1) If the deflection yoke and magnet are in one body, untighten the screw for the body. 2. Receive the green raster pattern from the color bar generator. 3. Slide the deflection yoke until it touches the funnelside of the CRT. 4. Adjust center of screen to green, with red and blue on the sides, using the pair of purity magnets. 5. Switch the color bar generator from the green raster pattern to the crosshatch pattern. 6. Combine red and blue of the 3 color crosshatch pattern on the center of the screen by adjusting the pair of 4 pole magnets. 7. Combine red/blue (magenta) and green by adjusting the pair of 6 pole magnets. 8. Adjust the crosshatch pattern to change to white by repeating steps 6 and 7. 3-4: DYNAMIC CONVERGENCE NOTE Adjust after performing adjustments in section 3-3. 1. Adjust the differences around the screen by movingthe deflection yoke upward/downward and right/left. (Refer to Fig. 3-2-a) 2. Insert three wedges between the deflection yoke and CRT funnel to fix the deflection yoke. (Refer to Fig. 3-2-b) RGB R G B 3-2: PURITY RGB R G B UPWARD/DOWNWARD SLANT RIGHT/LEFT SLANT NOTE Fig. 3-2-a Adjust after performing adjustments in section 3-1. 1. Receive the green raster pattern from the color bar generator. 2. Adjust the pair of purity magnets to center the color on the screen. Adjust the pair of purity magnets so the color at the ends are equally wide. 3. Move the deflection yoke backward (to neck side) slowly, and stop it at the position when the whole screen is green. 4. Confirm red and blue colors. 5. Adjust the slant of the deflection yoke while watching the screen, then tighten the fixing screw. WEDGE WEDGE WEDGE DEFLECTION YOKE DEFLECTION YOKE SCREW MAGNET SCREW 6 POLE MAGNETS 4 POLE MAGNETS PURITY MAGNETS Fig. 3-1 D3-5 WEDGE POSITION Fig. 3-2-b ELECTRICAL ADJUSTMENTS 4. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE (WIRING CONNECTION) MAIN PCB CP820 CP502 T502_1 CP803A FB401_1 VR501 CD803 VR502 1_ CP850 CP803B C D 80 1 1 VR401 R T VR402 C CP402 CP403 S501 S502 L508 CRT CD601 CD502 AC IN 0B CP81 TU601 J4202 TP4201 CP602_1 CP80 5B CP820B CP601_1 CP4002 CP605 DEW SENSOR TP4001 CD4001 TP1002 TP1001 CP4202_1 A/C HEAD CP2201_2 CD351_1 CD757 SYSCON PCB CD352 OPERATION PCB D3-6 SPEAKER TP801 80 CRT R802_1 CP CP401 F502 CRT PCB J801 T501 FH504 TP803 R810_1 FH503 TV BLOCK DIAGRAM V. OUTPUT IC IC401 AN5522 THERMAL PROTECTION PUMP UP 8.7VREF AT+13V Q607 BUFFER 5.7VREF(P.C0N) VIF IN 60 AFT OUT 11 53 FM DIRECT OUT 64 4 13 POWER ON CONT 5 3 VIF IN 33 39 5V REG 1 1 55 7.8V REG OUT SAW FILTER CF601 4 57 VREG VCC 1 RF AGC OUT 52 VIF VIDEO OUT 62 TU601 4 2 3 DY FB401 SDA 10 SCL 3 5 HV 7 FAST BLK 27 J801 9 R OUT 14 6 F F 10 2 S 8 7 6 2 1 31 V OUT 17 V PULSE OUT 29 V RAMP FEEDBACK 21 ACL/ABCL 9 Q350 X'TAL H.PLUSE OUT FBP IN H OUT B IN 20 3 1 32 12 6 7 MUTE SW 2 Q501 DC POWER SW. G IN 28 3 Q804 RED AMP Q805 GREEN GREEN AMP 6 4 Q806 BLUE AMP R IN 30 Q509, Q512 REG DRIVE Q505 T502 SW. 3 4 D503, D504, D535, D536 1 2 RECTIFIER Q510 T501 F502 4 8 3 8 14 5 16 13 14 13 SWITCHING SCL SDA AFT_M OSD_BLK MICON/ /IN/OUT/ OPERATION OSD_G OSD_R Q503, 516, Q518 HD VCR_POWER-H PROTECTOR X-RAY_TEST RY503 L508 DEGAUSS COIL Q407, Q404 SW X-RAY-STOP RELAY Q511 DC POWER SW. Q514 PROTECTOR/ AC, DC SW. SWITCHING VR502 7 2 Q502 AC+B ADJ P. CON + 8V OSD_B F501 Q402 DEGAUSS DRIVER Q401 DEGAUSS SW. Q408 X-RAY-SW VD Q610, Q611 Y/C/AUDIO/CCD/ HEAD AMP P.CON+13V REG Q608 IC506 LTV-817M-VB REG FEED BACK VR501 DC+B ADJ REG P.CON+8V P.CON+5V Q605, Q606 5V REG IC E-1 MICON/ IN/OUT/ OPERATION Q604 sw X602 3.579545MHz 12 Q507 FEED BACK SW. PROTECT VD L501 AC IN Q609 sw 11.3V REG. OPE AMP IC IC504 NJM2368D 1 V801 CRT 9 7 TV_A_MUTE H. OUTPUT AUDIO OUT 50 VR402 2 Q406 H-DRIVE V. POSI ADJ 1 J503 DC JACK 7 G OUT 15 B OUT 16 SOUND AMP IC IC351 AN7523 SP351 SPEAKER MICON/ IN/OUT/ OPERATION 1 Q405 CHROMA/IF IC IC601 M61206FP J351 HEAD PHONE 5 BUFFER EXT AUDIO IN Y/C/AUDIO/CCD/ HEAD AMP Q601 TU_AUDIO TU_VIDEO MONITOR_A IC603 KIA78R05PI P.CON+5V E-2 Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM X4001 3.579545MHz Q4010 BUFFER Q4012 BUFFER Y/C/AUDIO/CCD/HEAD AMP IC IC4001 LA71205M-MPB 50 41 49 37 34 PLL VX01 NC 67 P NC 66 REC REC APC APC L H DRIVER R 3.58M BPF2 R CP4001 CYL 1 65 P 2 SP-CH2 (L) 72 P 73 CLAMP CLAMP AUTO-BIAS CCD H L R 74 P Main CONV 3 SP_COM 4 SP-CH1 (R) TIMMING B-UP AMP C-LPF SERAIL DECODER AGC P 53 Y/C_CLK 54 Y/C_DATA 55 Y/C_CS MICON/ IN/OUT/ OPERATION OUT VCA 36 3.58M BPF1 ACC DET VIDEO AGC Q4013 TV AMP VD 9 REC AMP VREF NYR/COMB 7 CP4003 FE HEAD 1 FE HEAD (HOT) 2 FE HEAD (GND) LINE AMP 8 EQ AMP AUTO BIAS 6 CP4002 6 AUDIO PB 5 AUDIO REC HEAD AUDIO CONTROL 3 4 5 2 10 5 2 6 3 60B 1 23 SYNC SEP 24 26 25 80 76 78 32 30 ENV. DET V.REC_ST-H Q4009 BUFFER DUMMY_V. SYNC Q4007 SYNC IN MICON/ IN/OUT/ OPERATION SD_VIDEO SD_SYNC VIDEO OUT 28 TU_VIDEO BIAS CTL TU_AUDIO 2 AE HEAD(-) 1 AE HEAD(+) 1 2 3 H. SW VCR_A_MUTE COIL, BIAS OSC T4001 Q4005 4 CTL+ 3 CTL- ALC MUTE PB.EE 11 LPF R P 39 SYNC C-ROT SEP RF-SW IN 57 AUDIO MUTE HA SW 58 QV-QH ENV DET 59 Q4006 MONITOR_A P. CON + 5V BIAS OSC 4 1 Q4001, Q4002 AUDIO PB SW. TV FRONT_A Q4003 SW FRONT_V REAR_A REAR_V CTL+ MICON/ IN/OUT/ OPERATION CTLMONITOR_A E-3 E-4 MICON/IN/OUT/OPERATION BLOCK DIAGRAM TIMER SYSCON MICON IC IC1001 OEC7071A SW1001 50 TAB SW RESET-L 34 POWER_FAIL_L 85 X-OUT(12MHz) 39 X-IN(12MHz) 38 XC-OUT(32KHz) 36 XC-IN(32MHz) 35 SYSTEM RESET IC IC1002 R3111N311A/C OUT 1 POWER FAIL(DC) P. CON+5V 1 4 2 3 1 4 2 3 1 2 TV 1 MSSEN-A MS_SEN A Q1009 2 MSSEN-B MS_SEN B Q1003 3 80 REEL-T REEL SENS. Q1005 4 X-RAY_TEST 41 X-RAY_TEST VCR_POWER_H 27 VCR-POWER CP1001 1 CAP_FG 4 CAP/M/F/R CAPSTAN 5 I LIMIT DD UNIT 9 CAP_CTL 10 LDM_CTL 11 CTL_FG/PG 12 CYL_CTL 12 CAP- LIMIT 76 CAP-PWM 87 CAP-FG 11 CAP-FWD 20 LDM CTL 90 DRUM FG/PG 77 DRUM-PWM J701 X1001 12MHz 2 FRONT_A_IN_L 4 FRONT_V_IN X1002 32.768KHz CTL+ 95 CTL+ CTL- 94 CTL- V REC START H 66 V. REC_ST_H CVIN 56 SD_VIDEO SD_SYNC VIDEO-H. SW 18 H. SW SDATA 68 Y/C_DATA SCLK 70 Y/C_CLK CS 69 Y/C_CS 6 ENV_DET VCR_A_MUTE 81 VCR_A_MUTE IIC-DATA1 72 5 SDA IIC-CLK1 71 6 SCL CTL AMP-OUT 97 VIDEO ENV EEP ROM IC IC1099 S-24C04BDP-LA Q1004 SDA FF/REW_SW 21 X_RAY_IN X_RAY_STOP TV 24 H CONTROL PROTECT Y/C/AUDIO/CCD/ HEAD AMP 13 DUMMY_V. SYNC DUMMY-V.SYNC Q1013 AT+5V(UCON) 3 EOT SENSOR EOT Q1006 CENT SW 61 CENTER LED Y/C/AUDIO/CCD/ HEAD AMP FF/REW-L 73 SCL R 64 OSD_R G 63 OSD_G B 62 OSD_B AFT(MONI) 7 AFT_M OSD OUT1 60 OSD_BLK V-SYNC 59 VD H-SYNC 58 HD TV_A_MUTE 82 TV_A_MUTE KEY 1 9 TV D1003 POWER ON/OFF REC/OTR STOP/EJECT PLAY FF/CUE REW/REV Q1002 BOT SENSOR 4 BOT KEY 2 10 OS753 1 2 3 CH DOWN CH UP VOL. UP VOL. DOWN J4201 REAR_A_IN_L 2 REAR_V_IN 3 Y/C/AUDIO/CCD/ HEAD AMP E-5 J4202 MONITOR_A 2 VIDEO OUT 3 REMOCON-IN 14 T-REC LED 29 TV POWER REC LED Q4206 T-REC LED SW 28 30 Q4205 REC LED SW AT+5V Q4204 TV POWER LED SW REC/OTR D793 T-REC D791 POWER/PLAY D792 E-6 PRINTED CIRCUIT BOARDS OPERATION SOLDER SIDE SW794 SW791 SW795 CD757 D791 D793 D792 C751 R754_1 W802 CD352 R793_1 OS753 W006 R766 R761_2 W002 C755_1 F-1 C752 R774_1 R771_1 W004 W005 W001 R778_1 W003 SW798 SW793 R773_1 R772_1 SW796 R350 SW792 J701_1 C781 R776_1 W812 W805 J351 CD351_1 R351_1 SW797 C779 R777_1 W811 SW799 R775_1 SW751 C382_1 F-2 PRINTED CIRCUIT BOARDS MAIN/CRT SOLDER SIDE CP820 C515 B503 HS502 W848 B501 Q505 B505 C534_1 W003 C525 D539 W002 D509 W009 W015 C527_1 T501 R535 C516 D533 02 R5 W004 R545 C517 R541 C513_2 C509 W012 C526_1 R522 Q510 D507 HS501_1 D534 W845 W005 R525 R530 R511 D536 R532 C555 C503 W037 D508 IC506 R533 R542 D503 C507_2 W803 C52 W039 0_1 L501_1 _A_V 5A125VOR250V Q806_1 FH502 R510 FH501 C502_1 W016 01 J8 D504 TP803 TP801 TP802 R802_1 D535 R810_1 R501 C801_1 R528 B502 C523_2 C536 D530 C504 R515 R507 C544 R554_1 CD502 Q502 Q507 R807 Q804_1 D540 C537 C512 R508 R536 D502 R553_1 D528 W824 S804X D511 Q518 C506 R509 R529 S801 W836 F501 C505 R814 Q805_1 C809 C810 R811 R816 CP801_1 R820 R500 C805 W054 S502 R812 R813 C811 S501 R815 C519_2 L801 W888 W886 R518 C532 W014 W013 R519 W043 R805_1 C414 Q402 CP403 W841 R514 R424 W884 CP402 R413 W807 W820 R411 C407 C421 C413 C410 R412 R432_1 C429_1 R431 C406 C405 R403 D402 R504 Q408 D542 C541 IC504 Q512 W038 W001 W823 B507 D551 R539 D519 R422 R419 W045 R808 R425 R516 Q509 D405 Q401 R421 D406 R420 W044 W810 IC401 W046 R401 W052 D407 C409_1 R418 R416 W048 W047 R407_1 W852 W853 R404 D409 W815 VR402 W030 D548 Q404 W053 R456 C402 W819 C508 W042 C511 D545 R534 R417 C418 W050 W813 C417 R HS402 W814 C426_1 Q407 Q405 D401 HS401 CP401_1 D411 VR401 W032 9 40 R442 W011 W830 W875 W872 W035 D404 Q406_1 HS503 W008 W034 R444 FH503 C518_1 F502 W021 D517 L401 R447 R460 2.5A125VOR250V D510 FH504 W022 W829 R555 C531 D506 D547 T502_1 D546 7 C422 D413 C430_1 W808 W832 C423 VR502 54 D520 W812 W010 W024 R503 D541 C533 W025 W023 R443_1 D531 W026 VR501 D537_1 W006 R505 R R454 R453 T401 C530 R548 C535 R549 C539 R520 W027 IC501 R490 W801 R513 C432_1 W029 Q503 R546 W028 FB401_1 C425_1 W018 W017 Q514 Q516 HS504 D518 C542 R524 C538_1 R527 R556 D516 D550 D505 ICP502 L503 D512 D403 W818 R450 D521 RY503 R523 D524 D523 W041 C424 Q511 R517 D522 D514 C540 C529 R506 C427_1 D412 W827 R423 Q501 W019 C514 W007 D515 W020 W842 W822 C433_1 D501 W826 S804Y C551 J503 W831 CP502 D513 W040 CP803A CP803B CP850 CD501_2 F-3 F-4 PRINTED CIRCUIT BOARDS SYSCON (INSERTED PARTS) SOLDER SIDE CD601 CP2201_2 R668 R667 W084 W880 Q608 C694 W007 R690 L604 W008 W010 R689 C685 R602 R603 W070 W062 W071 W073 W933 W058 W107 W108 W103 W069 C619 W812 C688_1 W406 W174 TP1001 D611 D610 R1039 CP605 W172 W405 W170 W171 W169 D1014 W173 W878 C1016 C1002 C4211 C4220 W001 L4205 W914 W399 W930 W394 C671_2 W253 R1016 D603 C4212 C4245 J4202 W200 W278 W277 W289 C655 C659 S109X C664 W189 W190 C641 W929 X602 R642 D4004 W034 W033 W031 CF604 C624 C620 D607 W993 CP602_1 C632 D601 D602 W926 W122 C4004 C665 W119 R675 W029 C4010 W206 C4047 C4050 C4051 C4046 C4035 C4034 C4030 C4045 C4042 W855 W030 W294 W295 W402 W025 W151 C4025 C4012 C4048 L4005 W048 W144 W145 L4007 W857 CP4001_1 W230 W228 W229 C4009 W139 R688 W135 W045 L4001 W317 C4065 X4001 W233 C4079_1 C4062 C4067 W232 W231 W234 C4063 C4058 R4036 C1026_1 C1011 W362 W367 R4033 C4049 C4057 C4052 C4053 C4023 W209 CP4002 C4027 C4031 W218 W220 W185 W301 W305 W275 W273 W221 W219 W182 W186 W184 W224 W223 T4001 L610_2 W124 W090 W128 W194 W195 W187 W299 W272 W274 W303 W874 W300 W302 W225 W183 W197 W192 W193 W281 W276 C649 J4201 W013 W018 C668 L615_1 D609 C645 W019 W096 C635 D620 W199 W288 W245 W868 W285 W244 W241 W242 W243 W287 W250 X1002 W890 W271 W377 W227 C325 W226 R357 C321_1 C357 W053 W052 C350 C323 W055 W161 W240 C4076 R4007 IC351 W828 W332 W331 W049 W951 D1004 W085 W086 W087 TP4001 TP1002 W176 W177 C1018 C1020 C1015 W251 W249 W252 9 00 Q1 W353 W959 W054 W856 C1021 R654 D4206 W357 W358 C1003_1 003 W051 W154 W238 CP4202_1 W823 W181 W178 W883 W248 W261 W255 R1062 R1052 R2211 W260 W259 W263 W264 W265 W266 W908 W349 Q1003 W356 W162 HS353 W991 CP4 S107X R4015 W042 S108Y C324 R359 W132 B301 W163 W164 W340 Q1013 R353 SW1001 W047 W320 W137 W379 W143 W322 W988 W383 W142 CP820B W851 W321 W146 W323 R1059 F-6 F-5 W324 S112X L4006 R1046 D605 W149 L4008 W863 W150 W152 W290 W326 L607 W121 W944 L614 W110 R4006 W327 IC1099 W291 R607 W028 W118 R4004 W117 W292 R4026 W869 Q4005 W862 S112Y L4003 W208 R1002 W368 W205 W365 W123 W213 W212 W372 W859 W125 L608 R674 D1003 L4009 W211 W210 W214 W840 R4048 W373 W037 C4002 L1001 C648 W129 W131 W130 W036 W126 W217 Q4001 R677 W889 W891 W088 C631 D606 W091 W039 Q4002 W304 CF603 W092 W012 W982 W938 X1001 W116 W112 W364 005 Q4006 D612 W093 W094 Q1 R4059 R1040 R4212 R685 R683 S813X W866 S815X R4238 C674 W284 W095 D621 W939 D608 W994 W198 R1009 W282 D1002 W099 R610 R1006 5B W020 W024 R601 R651 D618 R635 R1060 R1024 W097 D616 R1013 W286 S815Y 10 D619 W100 W098 CP80 W002 W003 TP4201 R4239 D617 W167 CF601_1 W101 W867 R636 01 W006 Q606 W168 S107Y W063 W060 W059 W824 W106 W104 CP W876 W215 W374 S813Y TU601 C610 C612 W076 W004 W068 W246 W860 D4201 W075 W072 C684 Q605 Q610 W081 W080 W078 R695 W009 W011 S108X W996 R669 S109Y CP601_1 W082 Q1002 0B CP81 IC603 HS603_1 W270 W133 W310 W822 W328 PRINTED CIRCUIT BOARDS SYSCON (CHIP MOUNTED PARTS) SOLDER SIDE R4201 C4218 C4221 R362 C358 C4204 C5555 C4069 C6309 R4063 R4043 R1004 C4041 R1018 C1048 C1047 C1046 C1040 R1051 C1009 01 10 IC R1055 C1027 R1003 R1083 W992 C1030 R1008 Q604 C1008 R1087 R1028 R1050 R684 R634 R658 R692 R655 C602 R4232 C613 Q4210 R626 IC1002_1 R1025 1 C1006 R630 C4202 31 Q1004 W920 W943 Q4212 51 R1011 R1036 C1063 R1043 81 C1022 C639 R624 C1029 R1017 R1053 R1012 C1001 C1013 C1019 R647 R660 C1037 R1045 R1044 R1042 R1038 R1020 C1028 C1071 C1023 R1035 C1010 R4060 C4071 R4058 R4010 C660 R4069 C4006 R1021 R1007 R1077 C1045 R1029 C1065 C1044 R631 R4002 Q4003 R4003 R4045 C1035 R1032 C1017 R1049 C1031 R4044 R1058 R4053 R1014 1 C4005 R1031 C4043 C1056 W871 C1034 C1050 C1049 C1014 C1062 R4056 C4021 C4084 R1034 C1038 R1019 Q1006 R1033 R4034 R4035 C4032 R4022 C4078 C4060 C4061 R4028 R4025 C4038 R4052 R4061 Q4009 R648 C647 R652 C653 C601 R649 R643 C644 R659 17 IC 60 1 49 C634 R609 R4231 W928 R656 R4207 Q4211 W892 R4213 W887 R614 C618_1 C626 R608 C622 C621 C627 R4224 C4216 C4210 R646 R633 33 Q4007 R4024 R4023 Q4010 Q4013 R4062 C661 C636 C628 R4020 R4065 R4032 R4029 R4001 R638 C658 W858 C625 C654 C650 R673 R618 C640 C4213 R672 R625 C4037 C4036 Q4012 C4054 21 R4019 C4029 C4033 R4021 R641 41 C4044 C4020 R4057 C4077 C4028 R4017 R4018 R661 C623 W924 R622 R616 C614 R623 Q607 C4075 R4014 R4005 C669 W935 R620 Q601 R4038 1 01 R4011 R666 R4041 40 C663 61 IC R678 R4039 C4066 C4064 R4042 C4059 R4012_1 C633 C657 C656 R670 C651 C4016 C4022 W393 C4019 C4055 C698 W985 C4015 C4074 C630 C615 W941 Q651 R657 C4014 R4051 R358 W057 Q350 Q609 Q4206 C4201 Q4205 R687 R4046 R1001 R4047 W401 R613 R4204 R686 C608 C1033 F-7 R1047 C1041 R2212 Q1008 R682 R605 R663 Q611 Q4204 C4205 F-8 A B C D E F G H Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM (SYSCON PCB) P.CON+5V 47uH 0305 2 1 FE HEAD(GND) FE HEAD(HOT) GND P 47uH 0305 0.01 B 1/4W R4033 2.2K 3.3M R4036 40 39 37 36 R P R 35 34 2.0 50V 1 KA B C4047 FRONT_V_IN 50V 1 2.3 C4050 2.3 50V 0.22 KA 1.6 C4051 FROM IF KA C4076 REAR_V_IN 50V 1 KA VIDEO_OUT 4 FROM/TO CHROMA/IF 33 KA TU1_VIDEO R4032 26 6.3V TU1_AUDIO 100 47K R4029 25 VD MONITOR_A DUMMY_V.SYNC W840 2.8 R4065 1.8 2.2M P.CON+5V 1 3 R4048 C4042 SD_SYNC B B TUNER VIDEO SIGNAL AUDIO SIGNAL(REC) AUDIO SIGNAL(PB) 0.001 0.33 C4041 B 6.3V 0.1 0.047 B 0.1 B 1.5K C4014 B R4005 6 220 KA SYNC IN Q4007 2SC2412K 0 C4044 3.4 0.7 100 KA C4043 39K 1/4W C4084 R4028 5.0 R4026 L4009 22uH 0305 BUFFER Q4009 2SA1037AK 6.3V 0.1 B 0 180 1/4W 5.0 390P B C4037 2.2K R4024 33K C4035 2.5 C4045 KA 4.7 0.1 C4036 NC R4023 NC 1.5 20 4 0 19 VIDEO_OUT SD_VIDEO 2 DEFLECTION SIGNAL 3 1.4 18 W856 47K 1.7 17 0 50V 1 KA 16 B C4046 15 14 MAIN EMPHA S DET FIL W855 22 1.0 Y-GND 1.5K 1.0 13 FM AGC FIL R4025 12 25V 4 5 C4057 C4054 24 Y-VCC C4038 5.0 560 R4014 V.SYNC SEP SOPB 3 820 HOT KA 2 3.3K 50V 3.3 KA 0.01 B R4060 6.3V 47 KA C4034 12K R4018 R4022 C4032 0.0022 B 0.1 B 2.4 11 R4021 330K C4029 1 1 0 AMP Q4013 2SC2412K 10 2.3 22K 50V 0.1 C4022 0 2.2 C4031 C4010 2.3 H.AMP_SW1 KA KA 4.9 PB FM EQ S-EQ FM AGC VHS 9 180 16V 10 KA BIAS OSC Q4006 KTC3203_Y 0 22K 0 8 0.001 B C4030 R4011 R4058 0 10M 5.1 5.0 2.3 6.8K R4020 CP4003 TMC-T02X-E1 C4004 6.3V 220 YK FROM/TO FULL ERASE HEAD AUDIO 0.7 R4002 PB SW Q4001 10K KTC3198 0 AUDIO PB SW 0 0.7 R4003 Q4002 KTC3198 10K 0 C4002 0 100uH 0305 2.2 R4017 7 R4019 4.7 L4003 0.2 2.2 6 50V 4.7 C4053 4.0 0 MAIN DE-EM AUTO PHASE PHASE EQ EQ BIAS fo-ADJ Q-ADJ 1K R4059 3 B 10M 1/4W 2 4 R4057 VD 5 0.01 C4071 560 6.3V 33 KA 270P CH 5 1 2.3 5 4 50V 1 C4049 3.6 MUTE REC:LP
Source Exif Data:File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.4 Linearized : Yes Encryption : Standard V1.2 (40-bit) User Access : Print, Fill forms, Extract, Assemble, Print high-res Modify Date : 2003:08:11 16:25:19+03:00 Create Date : 2002:04:25 10:53:41Z Page Count : 72 Mod Date : 2003:08:11 16:25:19+03:00 Author : P2 Producer : Acrobat Distiller 3.01 for Power Macintosh Creation Date : 2002:04:25 10:53:41Z Metadata Date : 2003:08:11 16:25:19+03:00 Title : 5A3-A9C COVER Creator : P2 Has XFA : No Page Layout : SinglePageEXIF Metadata provided by EXIF.tools