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MVR2031
SERVICE MANUAL
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
As for the places which need special attentions, they are indicated with the labels or seals on the cabinet, chassis and parts. Make sure to keep the indications and notices in the operation manual.
3. PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING
There are parts which use the insulation material such as a tube or tape for safety, or which are assembled in the condition that these do not contact with the printed board. The inside wiring is designed not to get closer to the pyrogenic parts and high voltage parts. Therefore, put these parts in the original positions.
2. USE THE DESIGNATED PARTS
The parts in this equipment have the specific characters of incombustibility and withstand voltage for safety. Therefore, the part which is replaced should be used the part which has the same character. Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a ! mark, the designated parts must be used.
4. PERFORM A SAFETY CHECK AFTER SERVICING
Confirm that the screws, parts and wiring which were removed in order to service are put in the original positions, or whether there are the portions which are deteriorated around the serviced places serviced or not. Check the insulation between the antenna terminal or external metal and the AC cord plug blades. And be sure the safety of that.
HOW TO ORDER PARTS
Please include the following informations when you order parts. (Particularly the VERSION LETTER.) 1. MODEL NUMBER and VERSION LETTER The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be found at the end of the SERIAL NUMBER. 2. PART NO. and DESCRIPTION You can find it in your SERVICE MANUAL.
A1-1
CONTENTS
SERVICING NOTICES ON CHECKING ..................................................................................... A1-1 HOW TO ORDER PARTS ............................................................................................................. A1-1 CONTENTS ................................................................................................................................ A2-1 GENERAL SPECIFICATIONS ....................................................................................................... A3-1~A3-4 DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS AND P. C. BOARDS .............................................. . B1-1 2. REMOVAL OF DECK PARTS ............................................................................................... B2-1~B2-6 3. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC .................................................. B3-1, B3-2 KEY TO ABBREVIATIONS ........................................................................................................... C1-1, C1-2 SERVICE MODE LIST ................................................................................................................... C2-1 PREVENTIVE CHECKS AND SERVICE INTERVALS ................................................................. C3-1 SERVICING FIXTURES AND TOOLS .......................................................................................... C4-1 PREPARATION FOR SERVICING ................................................................................................ C4-1 MECHANICAL ADJUSTMENTS ................................................................................................... D1-1~D1-4 ELECTRICAL ADJUSTMENTS ..................................................................................................... D2-1, D2-2 BLOCK DIAGRAMS Y/C/AUDIO/CCD/HEAD AMP .................................................................................................... E-1, E-2 SYSTEM CONTROL/SERVO ..................................................................................................... E-3, E-4 TUNER ........................................................................................................................................ E-5, E-6 OPERATION/POWER ................................................................................................................ E-7, E-8 PRINTED CIRCUIT BOARDS SYSCON/OPERATION .............................................................................................................. F-1 ~ F-4 SCHEMATIC DIAGRAMS Y/C/AUDIO/CCD/HEAD AMP .................................................................................................... G-1, G-2 SYSTEM CONTROL/SERVO ..................................................................................................... G-3, G-4 POWER ...................................................................................................................................... G-5, G-6 OPERATION ............................................................................................................................... G-7, G-8 TUNER ........................................................................................................................................ G-9, G-10 INTERCONNECTION DIAGRAM .................................................................................................. G-11, G-12 WAVEFORMS ................................................................................................................................ H-1 MECHANICAL EXPLODED VIEW ................................................................................................ I-1 CHASSIS EXPLODED VIEWS ...................................................................................................... I-2, I-3 MECHANICAL REPLACEMENT PARTS LIST ............................................................................ J1-1 CHASSIS REPLACEMENT PARTS LIST ..................................................................................... J2-1 ELECTRICAL REPLACEMENT PARTS LIST............................................................................ J3-1
A2-1
GENERAL SPECIFICATIONS
G-1 VCR System System Video System Hi-Fi STEREO NTSC PB(PAL60Hz) Deck VHS Player / Recorder NTSC No No DECK Loading System Motor OVD-7 Front 3 4Head No Mono / Yes Yes SP/SLP SP/LP/SLP FF:4'50"/REW:2'30" T-120 SP/LP/SLP=3x,5x/7x,9x/9x,15x 1/10 1/10 US System M 1Tuner USA(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 4.50MHz No Yes 3 or 4 ch 66dBu /75ohm No No 120V,60Hz 8W at 120V 60Hz 1.8W at 120V 60Hz - kWh/Year Yes No UL FCC 5oC - 40oC -20oC - 60oC Less then 80% RH 1 V p-p/75 ohm 1 V p-p/75 ohm 50 230Line -8dB/50Kohm -8dB/1Kohm 42dB 1.5% 100Hz - 10kHz 100Hz - 6kHz 100Hz - 4kHz Yes Character No Yes Yes No Yes Yes Yes Yes
Heads
Video Head FM Audio Head
Normal Audio /Control Erase(Full Track Erase) Tape Rec PAL Speed NTSC Play PAL NTSC Fast Forward / Rewind Time (Approx.) with Cassette Forward/Reverse Picture Search Frame Advance Slow Speed Broadcasting System Tuner and Receive CH NTSC or PAL-M PAL or SECAM Slow Variable Slow System Destination Tuning System Input Impedance CH Coverage Picture(FP) Sound(FS) FP-FS
G-2
Tuning System
Intermediate Frequency
G-3
Power
G-4 G-5 G-6 G-7
Regulation Temperature
Preset CH RF Converter Output Channel Level/Impedance Sound Selector Stereo/Dual TV Sound Power Source AC DC Power Consumption Power On(at AC) Stand by (at AC) Per Year Protector Power Fuse Dew Sensor Safety Radiation Operation Storage 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 (1KHz) Frequency Response 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
Operating Humidity Signal Video Signal
Audio Signal (0dB=0.775Vrms)
Hi-Fi Audio Signal
G-8
On Screen Display
Menu Menu Type ATS Timer Rec Set Auto Repeat On/Off SAP On Off CH Set-Up TV/CATV Auto CH Memory Add/Delete
A3-1
GENERAL SPECIFICATIONS
Pin Code Registration System Set-Up Clock Set Language No Noise Back Ground G-CODE(or SHOWVIEW or PLUSCODE)No. Entry NICAM 1/2,NICAM Off,Audio Output Stereo,Audio Output,SAP Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause/Eject/Tape In (Symbol Mark) CH/AV Clock Repeat Pin Code Tape Counter Index Hotel Lock Tape Speed Manual Tracking (Bar Setting) Hi-Fi S-Repeat/SR-R/SR-Play VPS PDC G-9 G-10 OSD Language OSD Language Setting Clock,Timer and Timer Back-up Calendar Timer Events One Touch Recording Max Time OTPB Valid Time Timer Back-up (at Power Off Mode) Indicator Indicator Type Clock/Counter,CH,Timer Rec,OTR, Play Rec,FF(Cue),Rew(Rev),Stop,ATR Pause("Rec"Flash) Still("Play"Flush) Eject(Tape Mark Flash) Slow WKL,Y.M.D,Start,End AFT Repeat A-DUB VCR Memory Index VPS PDC SP LP SLP AM PM F1,F2 RF Output CH G-12 Remote Control Unit Glow in Dark Remocon Power Source Total Keys Keys No No Yes (Calendar 12H) Yes Yes No No No Yes Yes Yes Yes No Yes No No Yes No No No No No Spanish
English French English 1990/1/1 ~ 2081/12/31 8 prog/1 month 5 Hours 5 sec.
No No RC-EA No 3V UM-4 x 2 pcs 32 Keys Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes
G-11
Display
Voltage(D.C) UM size x pcs Power 1 2 3 4 5 6 7 8 9 0 CH Up CH Down Input Select Play F.Fwd Rew Pause/Still Stop
A3-2
GENERAL SPECIFICATIONS
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/VCR Sleep Timer Muting Clock/Counter Zero Return CM Skip Audio Select G-13 Features Auto Head Cleaning Auto Tracking Index Search HQ (VHS Standard High Quality) Auto Power On, Auto Play, Auto Rewind, Auto Eject Auto Power Off Forward/Reverse Picture Search VIDEO PLUS+(SHOWVIEW,G-CODE) ATS PDC VPS One Touch Playback Picture Control Auto Preset Channel Lock Hotel Lock Anti Theft Audio Dubbing Remort Control Code 1/2 SQPB CATV Energy Star MTS(SAP) CM Skip(30sec x 6 Times) Owner's Manual Language w/Guarantee Card Remote Control Unit Dew Cation Sheet Video Cassette Tape Battery UM size x pcs Safety Tip Toll Free Insert Sheet Quick Set-Up Sheet Information Sheet (Buyer Supply) 75 Ohm Coaxial Cable Rod Antenna Poles Terminal Loop Antenna Terminal U/V Mixer DC Car Cord (Center+) Guarantee Card Warning Sheet Circuit Diagram Antenna Change Plug Service Facility List Important Safeguard Dew/AHC Caution Sheet AC Plug Adapter Quick Set-up Sheet AC Cord No No Yes No No No No No No No No No No Yes No Yes Yes Yes No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No No Yes Yes No Yes Yes Yes Yes No No No No No No No No No No No No No Yes Yes No No English/Spanish No Yes No No No No No No No Yes(Single shield) No
G-14
Accessories
A3-3
GENERAL SPECIFICATIONS
AV Cord (2Pin-1Pin) Registration Card PTB Sheet Tape Rewinder(Buyer Supply) 300 ohm to 75 ohm Antenna Adapter Switch Front 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 Rear RF Output SW Indicator Power Stand by Rec/OTR Repeat TV/VCR Rec T-Rec Tape In Terminals Front Video Input Audio Input Other Terminal Rear Video Input Audio Input Video Output Audio Output Euro Scart DC Jack 12V(Center +) VHF/UHF Antenna Input AC Inlet Approx. W x D x H (mm) Net (Approx.) Gross (Approx.) Master Carton Content Material Dimensions W x D x H(mm) Description of Origin Gift Box Material Dimensions W x D x H(mm) Design Description of Origin Drop Test Natural Dropping At Height (cm) Container Stuffing(40' container) Cabinet Front No No No No No Yes Yes No No No Yes Yes Yes Yes No No No Yes Yes Yes Yes No No No Yes Yes Yes No RCA x 1 RCA x 1 No No No RCA x 1 RCA x 1 No No F Type No 360 x 229 x 95 3.2kg(7.1lbs) 3.8kg(8.4lbs) No Yes Single/White 420x291x160 As Per BUYER 's Yes 1Corner / 3Edges / 6Surfaces 80 3136Sets PS 94V2 DECABROM
G-15
Interface
G-16 G-17 G-18
Set Size Weight Carton
G-19
Cabinet Material
A3-4
DISASSEMBLY INSTRUCTIONS
1. REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS
1-1: TOP CABINET, FRONT CABINET AND OPERATION PCB (Refer to Fig. 1-1) 1. Remove the 4 screws 1. 2. Remove the Top Cabinet in the direction of arrow (A). 3. Disconnect the following connector: (CP651). 4. Unlock the 7 supports 2. 5. Remove the Front Cabinet in the direction of arrow (B). 6. Remove the 3 screws 3 and remove the Operation PCB.
Deck Chassis
1-3: DECK CHASSIS (Refer to Fig. 1-3) 1. Remove the 3 screws 1. 2. Disconnect the following connectors: (CP1001, CP4001, CP4002 and CP4003). 3. Remove the Deck Chassis in the direction of arrow.
1 1 1
1
Top Cabinet
1
1
(A)
1
Front Cabinet (B)
2 2 2 2 2 2
Operation PCB
3
3 3
Bottom Plate
Fig. 1-3
1-4: SYSCON PCB AND JACK PLATE (Refer to Fig. 1-4) Fig. 1-1 1. Remove the screw 1. 2. Remove the screw 2. 3. Remove the Syscon PCB in the direction of arrow.
1-2: FLAP (Refer to Fig. 1-2) 1. Open Flap to 90° and flex in direction of arrow (A), at the same time slide in direction of arrow (B). 2. Then lift in direction of arrow (C).
2
(A)
Syscon PCB
1 (C)
(B)
Flap
Bottom Plate
Fig. 1-4 Fig. 1-2
B1-1
DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1) 1. Extend the 2 supports 1. 2. Slide the 2 supports 2 and remove the Top Bracket. NOTE 1. After the installation of the Top Bracket, bend the support 1 so that the Top Bracket is fixed.
Locker R Top Bracket Cassette Side R Check if these positions are locked.
NOTE 1. In case of the Locker R installation, check if the two positions of Fig.2-3-B are correctly locked. 2. When you install the Cassette Side R, be sure to move the Locker R after installing.
1
1
Top Bracket
2
Fig. 2-3-B
2
Main Chassis
2-4: LINK UNIT (Refer to Fig. 2-4)
Main Chassis
Fig. 2-1 2-2: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-2) 1. Move the Cassette Holder Ass'y to the front side. 2. Push the Locker R to remove the Cassette Side R. 3. Remove the Cassette Side L.
Cassette Side R Main Chassis Locker R
1. Set the Link Unit to the Eject position. 2. Unlock the support 1. 3. Remove the (A) side of the Link Unit first, then remove the (B) side.
Main Chassis
Link Unit
(A)
(B) Link Unit
1
Main Chassis
Fig. 2-4
Link Ass'y Cassette Side L Main Chassis
2-5: LINK LEVER/FLAP LEVER (Refer to Fig. 2-5) 1. Remove the Link Lever. 2. 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.
Locker Spring
Flap Lever
1 1 2
Cassette Holder
Link Lever
Fig. 2-5
Locker R
1 1
Cassette Side R
Cassette Side L
Fig. 2-3-A B2-1
DISASSEMBLY INSTRUCTIONS
2-6: LOADING MOTOR/WORM (Refer to Fig. 2-6-A) 1. Remove the screw 1. 2. Remove the Loading Motor. 3. Remove the Worm.
Tension Connect
1 1 3
Tension Band
Tension Spring Tension Arm Ass'y Loading Motor Tension Holder
2 4
Worm Main Chassis
Fig. 2-7-B
· Screw Torque: 3 ± 0.5kgf·cm
1
Fig. 2-6-A
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.
NOTE 1. In case of the Worm installation, check if the value of the Fig. 2-6-B is correct.
19.2 ± 0.1mm
Tension Band Tension Connect
Fig. 2-7-C
Safety surface for pressing of the insert.
Fig. 2-6-B [OK]
Tension Connect Tension Band Tension Connect Tension Band
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
[NG]
Fig. 2-7-D
Tension Connect
Main Chassis
Fig. 2-7-E
Fig. 2-7-A
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
(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.
[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 (MG-33). (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.
Cassette Opener (1) (3)
2 2
(2)
2
A/C Head
1
A/C Head Spring
Pinch Roller Block
1
A/C Head Base P5 Arm Ass'y · Screw Torque: 5 ± 0.5kgf·cm (Screw 1) · Screw Torque: 4 ± 0.5kgf·cm (Screw 2) Main Chassis
Fig. 2-11-A
Fig. 2-10-A NOTE
Spring Position
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.
Fig. 2-11-B
2-12: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-12) 1. Remove the screw 1. 2. Remove the FE Head.
Pinch Roller Block
Can be seen the hole of the Pinch Roller Cam. FE Head
1
P5 Arm Ass'y
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.
· Screw Torque: 4 ± 0.5kgf·cm · The FE Head is not installed on the Video Cassette Player.
Fig. 2-12
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).
B2-4
DISASSEMBLY INSTRUCTIONS
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.
2
Pinch Roller Cam
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
Joint Gear
Cylinder Unit Ass'y
AHC Ass'y
1
Fig. 2-15-A NOTE 1. In case of the Pinch Roller Cam and Main Cam installation, install them as the circled section of Fig. 215-B so that the each markers are met. (Refer to Fig. 2-15-B) Fig. 2-13
Pinch Roller Cam
(3) (2) (1)
2 2
2
· Screw Torque: 3 ± 0.5kgf·cm
2-14: CAPSTAN DD UNIT (Refer to Fig. 2-14)
Marker
1. Remove the Capstan Belt. 2. Remove the 3 screws 1. 3. Remove the Capstan DD Unit.
Main Cam
Capstan Belt Capstan DD Unit
Fig. 2-15-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.
1
1
· Screw Torque: 4 ± 0.5kgf·cm
1 1
Main Rod
Main Loading Gear
Fig. 2-14
Loading Arm T Ass'y Tension Lever
Loading Arm S Ass'y
Fig. 2-18-A B2-5
DISASSEMBLY INSTRUCTIONS
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)
Marker
2-18: CASSETTE GUIDE POST/INCLINED BASE S/T UNIT/P4 CAP (Refer to Fig. 2-18-A) 1. Remove the P4 Cap. 2. Unlock the support 1 and remove the Cassette Guide Post. 3. Remove the Inclined Base S Unit and Inclined Base T Unit.
Cassette Guide Post
Main Loading Gear Marker
1
Inclined Base S Unit
Inclined Base T Unit
Loading Arm T Ass'y
Loading Arm S Ass'y
P4 Cap
Fig. 2-16-B 2-17: CLUTCH ASS'Y/RING SPRING/CLUTCH LEVER/ CLUTCH GEAR (Refer to Fig. 2-17-A) 1. 2. 3. 4. Remove the Polyslider Washer 1. Remove the Clutch Ass'y and Ring Spring. Remove the Clutch Lever. Remove the Coupling Gear, Coupling Spring and Clutch Gear.
1
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"
Clutch Ass'y
Ring Spring Coupling Gear Coupling Spring Clutch Gear
Clutch Lever
P4 Cap
Cassette Opener
Fig. 2-17-A NOTE 1. In case of the Clutch Ass'y installation, install it with inserting the spring of the Clutch Ass'y into the dent of the Coupling Gear. (Refer to Fig. 2-17-B) [OK]
Cassette Guide Post
Fig. 2-18-B
Clutch Ass'y
[NG]
Cassette Guide Post
Coupling Gear
Fig. 2-17-B B2-6
Fig. 2-18-C
DISASSEMBLY INSTRUCTIONS
3. REMOVAL AND INSTALLATION OF FLAT PACKAGE IC
REMOVAL 1. Put the Masking Tape (cotton tape) around the Flat Package IC to protect other parts from any damage. (Refer to Fig. 3-1.) NOTE Masking is carried out on all the parts located within 10 mm distance from IC leads.
Blower type IC desoldering machine
3. When IC starts moving back and forth easily after desoldering completely, pickup the corner of the IC using a tweezers and remove the IC by moving with the IC desoldering machine. (Refer to Fig. 3-3.) NOTE Some ICs on the PCB are affixed with glue, so be careful not to break or damage the foil of each IC leads or solder lands under the IC when removing it.
Masking Tape (Cotton Tape)
IC
Tweezers
Fig. 3-1
IC
2. Heat the IC leads using a blower type IC desoldering machine. (Refer to Fig. 3-2.) NOTE Do not add the rotating and the back and forth directions force on the IC, until IC can move back and forth easily after desoldering the IC leads completely. 4. Peel off the Masking Tape.
Fig. 3-3
5. Absorb the solder left on the pattern using the Braided Shield Wire. (Refer to Fig. 3-4.) NOTE Do not move the Braided Shield Wire in the vertical direction towards the IC pattern.
Blower type IC desoldering machine
Braided Shield Wire
Soldering Iron
IC
Fig. 3-2
IC pattern
Fig. 3-4
B3-1
DISASSEMBLY INSTRUCTIONS
INSTALLATION 1. Take care of the polarity of new IC and then install the new IC fitting on the printed circuit pattern. Then solder each lead on the diagonal positions of IC temporarily. (Refer to Fig. 3-5.) 4. When bridge-soldering between terminals and/or the soldering amount are not enough, resolder using a Thintip Soldering Iron. (Refer to Fig. 3-8.)
Thin-tip Soldering Iron
IC
Soldering Iron
Fig. 3-8 5. Finally, confirm the soldering status on four sides of the IC using a magnifying glass. Confirm that no abnormality is found on the soldering position and installation position of the parts around the IC. If some abnormality is found, correct by resoldering. NOTE When the IC leads are bent during soldering and/or repairing, do not repair the bending of leads. If the bending of leads are repaired, the pattern may be damaged. So, be always sure to replace the IC in this case.
Solder temporarily
Solder temporarily
Fig. 3-5 2. Supply the solder from the upper position of IC leads sliding to the lower position of the IC leads. (Refer to Fig. 3-6.)
Solder
Soldering Iron
IC
Supply soldering from upper position to lower position
Fig. 3-6 3. Absorb the solder left on the lead using the Braided Shield Wire. (Refer to Fig. 3-7.) NOTE Do not absorb the solder to excess.
Soldering Iron IC
Braided Shield Wire
Fig. 3-7
B3-2
KEY TO ABBREVIATIONS
A A/C ACC AE AFC AFT AFT DET AGC AMP ANT A.PB APC 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. 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 EOT/BOT/Reel sensor do not work at this moment. Refer to the "PREPARATION FOR SERVICING"
C2-1
PREVENTIVE CHECKS AND SERVICE INTERVALS
The following standard table depends on environmental conditions and usage. Unless maintenance is properly carried out, the following service intervals may be quite shortened as harmful effects may be had on other parts. Also, long term storage or misuse may cause transformation and aging of rubber parts. Time Parts Name Audio Control Head Full Erase Head (Recorder only) Capstan Belt Pinch Roller Capstan DD Unit Loading Motor Tension Band Capstan Shaft Tape Running Guide Post Cylinder Unit : Clean : Replace Replace when rolling becomes abnormal. Clean the Head Clean those parts in contact with the tape.
Clean the rubber, and parts which the rubber touches.
500 hours
1,000 hours
1,500 hours
2,000 hours
3,000 hours
Notes
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.
Audio Control Head Cylinder Head
C3-1
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
Tentelometer
Ref. No. JG001 JG001A JG001Q JG001T JG001B JG001I JG001P JG001S JG002B JG002E JG002F JG005 JG153 JG022 JG024A JG100A JG154
Part No. APJG001000 APJG001A00 APJG001Q00 APJG001T00 APJG001B00 APJG001I00 APJG001P00 APJG001S00 APJG002B00 APJG002E00 APJG002F00 APJG005000 APJG153000 APJG022000 APJG024A00 APJG100A00 APJG154000
Parts Name VHS Alignment Tape (For 2 heads model) VHS Alignment Tape (For 2 heads model) VHS Alignment Tape (For 2 heads model) VHS Alignment Tape (For 2 heads model) VHS Alignment Tape (For 4 heads model) VHS Alignment Tape (For 4 heads model) VHS Alignment Tape (For 4 heads model) VHS Alignment Tape (For 4 heads model) Adapter Dial Torque Gauge (10~90gf·cm) Dial Torque Gauge (60~600gf·cm) Post Adjustment Screwdriver X Value Adjustment Screwdriver Master Plane Reel Disk Height Adjustment Jig Torque Tape (VHT-063) Cable Monoscope, 6KHz Color Bar, 1KHz Hi-Fi Audio X Value Adjustment Monoscope, 6KHz Color Bar, 1KHz Hi-Fi Audio X Value Adjustment
Remarks
VSR Torque, Brake Torque (S Reel/T Reel Ass'y) Brake Torque (T Reel Ass'y) VSR Torque, Brake Torque (S Reel) Guide Roller Adjustment X Value Adjustment Reel Disk Height Adjustment Reel Disk Height Adjustment Playback Torque, Back Tension Torque During Playback Used to connect the test point of SERVICE and GROUND
PREPARATION FOR SERVICING
1. Short circuit between TP1001 and Ground with the cable JG154. (Refer to MAJOR COMPONENTS LOCATION GUIDE) The EOT, BOT and Reel Sensor do not work at this moment. At that time, the STOP/EJECT button is available to insert and eject the Cassette Tape.
C4-1
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.) · When you activate the deck without the Cassette Holder, short circuit between TP1001 and GND. (Refer to ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE) In this condition the BOT/EOT/Reel Sensor will not function. 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.
Master Plane (JG022)
1-2: CONFIRMATION AND ADJUSTMENT OF TENSION POST POSITION 1. Set to the PLAY mode. 2. Adjust the adjusting parts for the Tension Arm position so that the Tension Arm top is within the standard line of Main Chassis. 3. While turning the S Reel clockwise, confirm that the edge of the Tension Arm is located in the position described above.
Standard line of Main Chassis
Tension Arm
0.5mm (Adjusting range)
Fig. 1-2-A
Adjusting parts for the Tension Arm position
Tension Band
Reel Disk Height Adjustment Jig (JG024A)
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
1-3: CONFIRMATION OF PLAYBACK TORQUE AND BACK TENSION TORQUE DURING PLAYBACK 1. Load a video tape (T-120) recorded in standard speed mode. Set the unit to the PLAY mode. 2. Install the tentelometer as shown in Fig. 1-3. Confirm that the meter indicates 20 ± 2gf in the beginning of playback. Fig. 1-1-A
Reel Disk Height Adjustment Jig (JG024A)
· USING A CASSETTE TYPE TORQUE TAPE (JG100A) 1. After confirmation and adjustment of Tension Post position (Refer to item 1-2), load the cassette type torque tape (JG100A) and set to the PLAY mode. 2. Confirm that the right meter of the torque tape indicates 50~90gf·cm during playback in SP mode. 3. Confirm that the left meter of the torque tape indicates 25~40gf·cm during playback in SP mode.
Tentelometer
Reel Disk
Master Plane (JG022)
(B)
10(+0.2, -0)mm (C)
Video Tape (A) Height Adjustment Washer 2.6x4.7xT0.13 2.6X4.7xT0.25
Fig. 1-1-B
P1 Post
Guide Roller
Fig. 1-3
D1-1
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 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) NOTE
The position at STOP mode. Capstan DD Unit
Cassette Opener
Cassette Holder Ass'y
Fig. 1-4-A
Torque Gauge/Adapter (JG002F/JG002B)
After adjustment, confirm and adjust A/C head. (Refer to item 2-2)
CH-1 Envelope (TP4001)
Torque Gauge/Adapter (JG002E/JG002B) CH-2 SW Pulse (TP1002)
CH-1 Track
CH-2 Track
Fig. 2-1-A
Entrance S Reel Max Max Exit
A
B
T Reel
Fig. 1-4-B
A:B3:2
Fig. 2-1-B
D1-2
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 Post (1) CH-3 Audio (2) Envelope
2-3: TAPE RUNNING ADJUSTMENT (X VALUE ADJUSTMENT) 1. Confirm and adjust the height of the Reel Disk. (Refer to item 1-1) 2. Confirm and adjust the position of the Tension Post. (Refer to item 1-2) 3. Adjust the Guide Roller. (Refer to item 2-1) 4. Confirm and adjust the Audio/Control Head. (Refer to item 2-2) 5. Connect CH-1 of the oscilloscope to TP4001, CH-2 to TP1002 and CH-3 to HOT side of Audio Out Jack. 6. Playback the VHS Alignment Tape (JG001S or JG001T). (Refer to SERVICING FIXTURE AND TOOLS) 7. Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center. 8. Set the X Value adjustment driver (JG153) to the 4 of Fig. 2-2-B. Adjust X value so that the envelope waveform output becomes maximum. Check if the relation between Audio and Envelope waveform becomes (1) or (2) of Fig. 2-3.
Fig. 2-3
Stamp Mark
Fig. 2-2-A
2-4: CONFIRM HI-FI AUDIO (Hi-Fi model only) 1. Connect CH-1 of the oscilloscope to 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
D1-3
MECHANICAL ADJUSTMENTS
3. MECHANISM ADJUSTMENT PARTS LOCATION GUIDE
4 5
6 3
2
7
1
10
9
8
1. Tension Connect 2. Tension Arm 3. Guide Roller 4. Audio/Control Head 5. X value adjustment driver hole
6. 7. 8. 9. 10.
P4 Post T Brake Spring T Reel S Reel Adjusting parts for the Tension Arm position
D1-4
ELECTRICAL ADJUSTMENTS
Read and perform this adjustment when repairing the circuits or replacing electrical parts or PCB assemblies.
1. BASIC ADJUSTMENT
CAUTION When replacing IC's or transistors, use only specified silicon grease (YG6260M). (To prevent the damage to IC's and transistors.) 1-1: PG SHIFTER CONDITIONS MODE-PLAYBACK Input Signal-Alignment Tape (JG001B) INSTRUCTIONS 1. Connect CH-1 on the oscilloscope to TP1002 and CH-2 to TP4201. 2. Playback the alignment tape. (JG001B) 3. Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center. 4. Adjust the VR1001 until the waveform of the oscilloscope measures 6.5 ± 0.5(H) at both leading and trailing edges. (Refer to Fig. 1-1-A, B)
CH-2
6.5H
CH-1
Fig. 1-1-A
CH-2
CH-1 6.5H
Fig. 1-1-B
D2-1
ELECTRICAL ADJUSTMENTS
2. ELECTRICAL ADJUSTMENT PARTS LOCATION GUIDE
TP1001 J4205 J4203
T501
VR1001
TU6001 TP4001 TP1002
TP4201 J4201
SYSCON PCB
D2-2
Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM
X4001 100CT3R508
Q4012 BUFFER Q4010 BUFFER
Y/C/AUDIO/CCD/HEAD AMP IC IC4001 LA71201M-N-MPB
50 VX01 TIMMING 67 L H 66 AGC AMP H.SW 49 41 PULL DRIVER REC FM-EQ KIL C-LPF CP4001 FM MOD 39 OUT 37
SERIAL CCD WC DC CLAMP DECODER NL EMPHA V/I CONV Y-LPF R 65 72 H H.AMP SW L P R GCA R FM AGC 73 H 74 H.SW L DELAY PB FM-EQ PB PHASE-EQ 9 7 CP4003 FE HEAD 1 FE HEAD (HOT) 2 FE HEAD (GND) 8 AUTO BIAS 6 PB.EE 11 CP4002 6 AUDIO PB 5 HEAD AUDIO CONTROL 4 3 2 1 AUDIO REC CTL+ CTLAE HEAD(-) AE HEAD(+) 4 1 6 3 Q4006 BIAS OSC P. CON + 5V COIL, BIAS OSC T4001 5 2 5 4 3 2 10 78 76 32 30 EQ AMP P R ALC DET MUTE ALC 6dB SYNC SEP REC AMP DOUBLE LIM FM DEM LINE AMP LPF P R SUB LPF V-AGC P ACC AMP R KIL B.D. P 3.58M BPF1 PB AMP N.L. DEEM NC1 Y/C MIX P FBC R ENV DET Chara INS. B-UP AMP Main CONV 3.58M BPF2 R YNR/ COMB VCA CLAMP DETAL ENH CLAMP P P
55 54 53
Y/C_CS IIC_DATA IIC_CLK SYSCON/SERVO
22 21
1 2
3 CYL 4 5
EP/LP_CH2 (L) EP/LP_COM EP/LP_CH1(R)
36 34
SP_CH2(L) SP_COM
6 SP-CH1(R) 7 8 9
H.AMP SW/ AUDIO MUTE 58 1/2 C ROT RF SW IN 57
H. AMP_SW C. ROTARY H. SW AUDIO_MUTE-H SYSCON/SERVO
59
ENV. DET COMP DUMMY_V. SYNC OSD_V
CONP 60 OUT 24 26
FSC Q4005 BIAS CTL FRONT_V_IN TUNER_V TUNER_A FRONT_A_IN_L FROM_NORMAL_A TUNER
Q4001, Q4002 AUDIO PB SW
Q4003 SW V.REC_ST-H CTL+ CTLSYSCON/SERVO
E-1
E-2
SYSTEM CONTROL/SERVO BLOCK DIAGRAM
SYSCON/TIMER/SERVO IC IC1001 OEC0104B
61 CENT LED Q1007 MODE_VCC CENT SW
2 MS_SEN B Q1004 3 4 3 4 1 2 1 MS_SEN A Q1005
P.OFF-L 55 7
MS SEN-A FS/IIC CLK IIC DATA Y/C_CS DUMMY V.SYNC V.REC ST-H
18 19 20 27 56 28 59 43 32 31 29 30 14 24 54
4FSC IIC_CLK IIC_DATA Y/C_CS DUMMY_V.SYNC V.REC_ST-H C.ROTARY AUDIO.MUTE-H OSD_V CTLCTL+ H.AMP_SW COMP ENV.DET H.SW C.SYNC
Y/C/AUDIO/CCD/ HEAD AMP
6 MS SEN-B
AT+5.2V
BOT SENSOR EOT SENSOR Q1006 Q1008
REEL SENSOR Q1002
C.ROTARY A.MUTE 87 REEL-T
CV IN CTL-H(-) CTL-H(+) H.AMP SW
P.CON+5V
2 1
3 4
12 EOT-H 3 BOT-H
COMP ENV DET H.SW C.SYNC
POWER_FAIL
89 POWER FAIL-H 64 POWER ON_H
IIC_CLK IIC_DATA
AFT S. CURVE 11
POWER_ON-H
POWER
P.CON+5V AT+12.6V
AFT-S.CURVE A_OUT_MUTE-L TV/VCR VIDEO_OUT
TUNER-L TUNER
DECK
CP1001 1 CAP_FG 2 CAP_VCO 3 VCC 4 CAP/M/F/R 5 I_LIMIT 8 LD/CY_VCO 9 CAP_CTL 10 LDM_CTL 11 CYL_FG/PG 12 CYL_CTL
AUDIO OUT MUTE-L
40 CFG 39 DPG 60 CAP FWD 66 CAP LIMIT
93 84 45 58
VCR-H(TV/VCR) CV OUT TUNER-L
21 CAP FULL 25 CAP PWM
CYL SPEED UP 38 DFG 65 LDM_CTL 63
TAB SW 80 OSD 1 72
REM_IN KEY-B KEY-A OPERATION 1G/TV/VCR_LED 2G/T-REC_LED 3G/REC_LED
SW1001 X1001 CSTS1000MG96004-T2
IC1003 R3111N311A/C-TR
82 REM_IN 8 KEY-B 9 KEY-A 79 1G/TV/VCR LED 78 2G/T-REC LED
77 3G/REC LED
OSC 2 73
RESET 16
1
SYSTEM RESET IC
E-3
E-4
TUNER BLOCK DIAGRAM
FRONT AV JACK REAR OUT JACK VIDEO MONO AUDIO J4205 J4203 J4201 2 Q4201 SYSCON/SERVO VIDEO_OUT BUFFER 3 2 2
TUNER_V
P. CON + 12V
FRONT_V_IN
RF-SW SW6001 2
FSC Y/C/AUDIO/CCD HEAD AMP FRONT_A_IN-L
FROM_NORMAL_A TUNER_A
TU6001 3 6 2
15
5 11 12
21
TV/VCR IIC_CLK IIC_DATA
SYSCON/SERVO
23 24
AFT-S. CURVE
E-5
E-6
OPERATION BLOCK DIAGRAM
CH UP
CP601
CH DOWN STOP/EJECT REC/OTR FF/CUE PLAY REW/REV POWER KEY-A KEY-B 3 2
CP651 3 2 OS651 1 3 T_REC LED D665 2G/T-REC_LED TV/VCR LED D664 REM_IN 1G/TV/VCR_LED SYSCON/SERVO KEY-A KEY-B
REC LED D666
3G/REC_LED
POWER BLOCK DIAGRAM
T501 10 +32V
5 2 4
7
P. CON +12V
8 6 IC501 KIA431
Q506 P. CON +5V SW
P. CON + 5V
D505, D508, D523, D528 Q503 SW Q502 CONTROL
VOLTAGE CTL IC
Q508
P. ON SW
IC511 PHOTO COUPLER
3
1
Q515 M-CON B+ SW AT +5V[M-CON]
AT +12.6V
IC505 PHOTO COUPLER
POWER_ON-H L501
SYSCON/SERVO
POWER_FAIL
F501
AC IN
E-7
E-8
PRINTED CIRCUIT BOARDS SYSCON/OPERATION (INSERTED PARTS)
SOLDER SIDE
D664 W115 J4203 R658 TP1001 W161
D665
D666 R660
D663 W840
SW660
SW659
SW604_1
SW605
SW608
W029 W033 R1006
D520 D501 D521 C518
W150 SW603_1 W143 SW606_1
W851 W091 W121
W034
D525
CP
W090 W119 W089 W088 W087 W085 R1031 W109 W082 R1073_1 R1074_1 C1038 C1021 C1020 W835
00 Q1
2
Q
R1002 W845
0 10
5
W010 T501
60
1_
L1001 W086 C1022 W084 W043 W042 W045 C1006
1
W122 W116
R
54
9
C4211 VR1001 C6003_1 W154 W159 W153 TU6001 W813 C6010 W157 R6004 C4201
J4205_1 W863
W113 R1043
L505_1 R509
C520
C514 L504_1
W864
R659
R657
SW1001 W114
W824
OS651 Q506 W036
W081 W077 W071
W079
Q515
D514
CP651_1 C519
R530
W038
W857
W078
W075
C522
W037
X1001_1
W006
W005
W852
B501
Q508 R521 R531 W002 W001 W003
R604
C502
W837
D512
W074
W820
Q1004
C1023
W833
W838 W829
D502 Q503_2
D1002
R511
C1029
R537
SW607
W818 W044 W828 W027 W026 W008 D507 W826 W841 W024 Q502 B502 D511 R534 W041
W103 W083
D1001
R1016 W058 W022 W021 W020 W019 W018 W017 W015 W013 W016 W023
W040 W012 W050 W059 W060 W061
W025
R51 4
C509 C512_1
Q1006 W095 W054 W100 W049 W053 W101 W051 R1076 W136
Q1008
W052
W055
W057
W056
R1075 W131
W093 C4049 W047
W048
R512
W092
W094
W032 C4052 W031 C4051
R548 IC511 C1001 W011 R1003 R1022
C508
W127
C4058
W125
W107
W844
R6010
SW6001
L6002 Q4201 R4201 W816
TP4201
W158
R4047
W815
C4065
W030 W801 W067 W068 W066 W065 L4004 C4045 W064 Q4005 W062 C4025 L4003 R1010 W808 R1038 C4050
D508 IC501 W097 D528
C5 05 _1
W141
L6003 C4209 W160 W803 R4213_1 W811 J4201_3
C4062 L4005 C4067
CP4 003
R4033 C4048 C4053
D523
TP4001 TP1002
R4045
L4006 X4001 W039 C4059 C4063
W028
D505 R547 IC505
CP 10
W139
01
C4046
W096
C4070
D1005 D1004 D1003
W809
D506
C4035 C4010
L501
L4001 C4009 CP4001
W111 W110 C4012
C4013 R4020 C4027 C4030 R4053 C4031 C4014
Q4002
C4034 W069
C4004 T4001 Q4006
R4004
L1002_1
1.6A125VOR250V
FH502 FH501
Q4001
W070 F501 C4002 R502 C504 S501 CD501
A_V_
S502
.
CP4
002
RISK OF FIRE -REPLACE AS MARKED.
F-1
F-2
F-3
C506 C534 C529 R524 C507 R527 R1004 R510 R516 R518 C515 R506 R1087 R1050 R1083 R1013 R544 R1009 R519 R1061 Q1007 R1070 C1019 C1032 C1013 R1014 R1017 R1015 C1040 R1039 R4007 R1041 R4046 C1034 C1016 R1072 R1065 R1030 R1053 R1026 R1025 C1055 R1040 51 31 IC1001 81 1 R1062 R605 R601 R1007 R603 R1058 R602 R1042 R1033 R1052 C4006 R4010 C4005 R4001 R4044 C4038 R4025 C4057 R1048 C1041 C1017 R1049 R1051 R1066 C4069 C1015 R1055 R1054 R1037 C1054 R1034 C1053 R4035 R4034 C1036 R4037 Q4011 R4043 R4023 R4011 C4037 R4024 Q4003 R4002 R4003 R4021 C4036 C4054 41 C4044 R4022 C4032 21 1 C4028 C4033 R4019 R4018 C4029 R4017 C4074 R4014 C4021 R4006 C4061 C4060 Q4010
SOLDER SIDE
R4016 C4020
IC1003 R1046 R1047 R607
R4036
IC4001
R4038 C4066 R4042 Q4012 R4041 R4039
61
PRINTED CIRCUIT BOARDS SYSCON/OPERATION (CHIP MOUNTED PARTS)
R1045 R1044
R4012
C4015
C4019 C4016_1 C4064
C6014 R4210 C6009_1 R4209 C6002
C4204 R4205
R4202 R6006
R6005
F-4
A
B
C
D
E
F
G
H
Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM
8
H.AMP_SW 22K AUDIO_MUTE-H C.ROTARY P.CON+5V ENV.DET IIC_DATA COMP H.SW Y/C_CS IIC_CLK
(SYSCON PCB)
P.CON+5V
8
R4044
R4046
L4005 12K 1/4W L4006 47uH R4041 1.8K 16V 47 YK 3.9 3.3 R4043 4.9 BUFFER Q4012 2SC2412K
12K 1/4W
R4045
R4047
47uH
22K
FROM POWER C4070 C4063 P.CON+5V GND 0.1 F
FSC 0.01 B C4060
3.3K
7
7
FROM/TO TUNER FSC FRONT_V_IN
KA
KA
C4062
C4065
C4067
KA
C4058 50V 1 6.3V 47 KA C4059 R4037 R4036 1.8K 1K 0.1 F R4038 680K C4061 0.01 B 3.8 3.2
1
8.2K 50V C4064
50V
1
C4069
0.1 F
R4039
FRONT_A_IN-L TUNER_V TUNER_A FROM_NORMAL_A
B
0.022
C4066
2 R4042 100CT3R508
0.022
B
4.9
6
4.8 4.8 60 59 C4016_1 0.068 B 62 0 C4019 C4015 FROM/TO CYL CP4001 TOC-C09X-A1 9 8 7 6 5 4 3 2 1 SP-CH1 (R) SP_COM SP-CH2 (L) EP/LP-CH1 (R) EP/LP COM EP/LP-CH2 (L) NC NC NC P.CON+5V KA 22uH 0305 C4009 L4001 68 5.0 1.8 1K 1.6 0 1.8 1.8
HA VCC
X4001
BUFFER Q4011 2SC2412K 4FSC
1.5K
6
0 5.2 58 57
0 5.2 5.2 5.2 4.9 2.1 56 55 54 53 52 51
SERAIL DECODER C-VCC
NC 4.1 3.2 3.3 3.2 4.9 4.9 1.2 2.2 0.8 50 49 48 47 46 45 44 43 42 41 40
VX01 320FH VCO
P R
61
SLD
B
PLL OUT
VSS
R4033
2.1
OUT ENV COMP DET KILL DET HA GND CHROMA DET ACC DET
P
AUDIO C-ROT C-GND MUTE RF-SW HA SW IN
ALWAYS VDD 5V
4Fsc
CLOCK
0 1.6 0 3.2 2.5 3.2 3.3 C4049 KA C4048 50V 1 KA
BUFFER Q4010 2SA1037AK 1.6 0 2.2
2.2K 1/4W
FROM/TO SYSCON/SERVO 4FSC IIC_CLK R4034 82K R4035 100K IIC_DATA Y/C_CS DUMMY_V.SYNC V.REC_ST-H C.ROTARY
TIMMING DRIVER CCD
BGA BGA
OUT
63
AUTO-BIAS VSS CLAMP
0.047 F
F 64 1.6 1.8 1.9 1.8
0.047
R
P
BEFORE
IN
65
BGA
R P
CNC PB AMP B.D
P
36
AFTER
37
38
2.9
REC APC
PB APC
REC AFC
39
66
R H
P R
VCA CLAMP VCP
35
5
VCA
C4052 50V 1 KA C4053 50V 1 KA
5
67
L
34
P
3.58M BPF2 Main CONV B-UP AMP ACC AMP ACC DET
AUDIO_MUTE-H OSD_V CTLCTL+ TUNER_V H.AMP_SW COMP ENV.DET FRONT_V_IN H.SW C.SYNC
C-LPF
69
R4012
6.3V 47 C4013
0.1 B
P
R
+
1 2 3
32
3.58M BPF1
PB-C
33
50V 1 2.6 2.6 4.1 2.3
C4054 0.1 F
4.21M BPF HA PRE GND
P H L R
YNR/COMB
P R R
VIDEO AGC
REG 4V
70
71
Sub CONV DETAIL ENH NL EMPHA
R
30
31
P
CLAMP
P
N.L. DEEM NC1
PB-C
1/2 FBC
R P R P
C4050
BAL TC1
72
29
2.3 2.1 NC 1.6 3.6 4.1 5.0 4.4 3.2 2.1 100 KA 0.1 B C4045 C4046 50V 1 KA L4004 22uH W801 6.3V 22 KA 1 OSD_V C.SYNC DUMMY_V.SYNC P.CON+5V 50V 0.22 C4051 KA
4
1.8 0 TUNER_A P.CON+5V FRONT_A_IN-L C4012 6.3V 22 KA R4004 15 1/4W R4007 47K R4006 47K C4014 6.3V 22 KA R4016 R4014 5.6K C4020 0.1 F 2.3 4.9 C4021 0.1 F 2.3 0 2.3 NC
NL EMPHA FM MOD
R-EQ TEST NORMAL
73
28
Y-LPF
R
Y/C MIX
4
P
AGC TC2 6DB
74
75
A-GND
1 2 3
DOUBBLE LIM
FM DEM
SUB LPF MAIN DE-EM
QV/QH SYNC SEP V.SYNC SEP
R
76
ALC
R P
LPF
LINE AMP
77
A-VCC ALC DET PB,EE EQ AMP SP,LP PB,EE REC:LPP R
78
P
R
P
Y-VCC
VHS
SOPB
79
4.7K
0.0027 B
C4032
R4022
C4028
C4034
R4018 R4017
C4027
V.REC_ST-H
0.1 F
C4037
R4024
6.3V
8.2K
390P B
C4036
3 2 1
CTLAE HEAD(-) AE HEAD(+)
R4001 560 AUDIO PB SW Q4001 KTC3198 AUDIO PB SW Q4002 KTC3198-AT (Y,GR} GND HOT 0 0.7 0 C4002 R4002 10K 5 100V 0.022 MKT
6 5 4
1 2 3 0.01 B R4010 C4005 3.3K 220 YK
L4003
6.3V 220 YK C4074 0.001 B 100uH 0 0305 5.2 0 0 BIAS OSC Q4006 KTC3203_Y 5.2 R4011 22K C4010 6.3V 47 KA
330K C4029 0.01 B
2
C4038
CTL-
R4019
C4031
C4025
180P CH
4
CTL+
50V 1 KA
CTL+
BIAS CTL Q4005 KTA1266
0.0012
B
5.6K
5
AUDIO REC
50V
5.3
COIL,BIAS OSC T4001 1626009
C4057
6
AUDIO PB
10P CH
18K C4033
C4035
0
SW Q4003 KRA103RTK
33 KA
1 KA
8.2K
CP4002 IMSA-9604S-06Z13
5.2
10K
1.5K
1/4W
R4025
R4021
25V 4.7 KA
P.CON+5V
R4053
33K
FROM/TO HEAD AUDIO CONTROL
R4023
Y/C/AUDIO/CCD/HEAD AMP IC IC4001 LA71201M-N-MPB
2.3
2.3
2.3 0.1 F
2.3
2.3
2.3
0
2.3
2.3
C4044
3
Vref 2.3V
FM AGC FIL
Y-GND
MAIN EMPHA S DET FIL
80
4.7K
B
21
22
23
FM AGC
PB FM EQ S-EQ
24
REC FM-EQ
25
26
27
1
2
3
4
5
6
7
8
9
10 11 12 13 14 15 0.8 4.8 1.1 1.1 1.4 2.0 820
17 18 19 20 16 0 2.6 NC 2.6 0.2 2.8
3
6.3V
2
180 1/4W 16V 10 KA 4 FROM_NORMAL_A 3 V.ENV TP4001 NC
C4004
0 0.015 B C4006
TO FE HEAD CP4003 TMC-T02X-E1 2 1 FE HEAD(GND) FE HEAD(HOT)
0 R4003 0.7 0 10K
6.3V
R4020
C4030
PCB010 VMA224
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
CAUTION: DIGITAL TRANSISTOR
AUDIO SIGNAL(PB) AUDIO SIGNAL(REC) TUNER VIDEO SIGNAL
RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL
G H
1
A
B
C
D
E
F
G-1
G-2
A
FROM/TO POWER POWER_FAIL
B
C
D
E
F
G
H
SYSTEM CONTROL/SERVO SCHEMATIC DIAGRAM
FROM/TO TUNER AFT-S.CURVE IIC_DATA_A
(SYSCON PCB)
POWER_ON-H AT+5V[M-CON] P.CON+5V AT+5.2V AT+12.6_V GND GND GND
1K 1/4W
R1043
R1070
(MOTOR) (LED)
IIC_DATA
R1075
(S/S)
47K 1/4W
22K
V.REC_ST-H
LDM_CTL
POWER_ON-H
CYL_DRIVE
CAP_LIMIT
CENT_LED
TAB_SW
CAP_F/R
C.SYNC
4FSC
7
AUDIO_MUTE-H
IIC_CLK
1K 1/4W
R1076
TV/VCR
8
VIDEO_OUT
IIC_CLK_A
LED_VCC
8
7
D1002 C1019
1G/TV/VCR_LED
2G/T-REC_LED
3G/REC_LED
SERVICE TP1001
C1001 B C1055 33P CH 0.022 R1040 C1032 C1034 0.1 16V 220 YK 27P CH 2 3 1 C1036 F
22P CH
1SS133
R1013
NC
10K
FROM/TO Y/C/AUDIO/CCD/HEAD AMP 4FSC IIC_CLK 15K 1/4W R1016 W818 IIC_DATA Y/C_CS DUMMY_V.SYNC V.REC_ST-H C.ROTARY C1016 50 3.3 0.1 F 0 2.8 2.7 3.3 3.5 1.3 3.5 5.2 5.2 5.0 4.5 4.5 2.6 2.6 2.6 2.6 0 2.6 2.6 R1055 47K R1015 560 R1017 560 C1013 0.001 B R1014 6.8K H.AMP_SW C.ROTARY CTL+ IIC_DATA IIC_CLK CTLR1074_1 COMP 1K 1/4W R1054 220 C1020 6.3V 47 KA R1048 270K C1015 220P CH C1040 9 C1038 6.3V 22 KA 0.0047 B C1022 6.3V 22 KA R1061 C1006 470K 0.1 F 7 W829 W828 8 R1022 1K 1/4W CAP_FG CYL_PG CYL_FG C1029 25V 4.7 KA FROM/TO OPERATION REM_IN KEY-B KEY-A 1G/TV/VCR_LED 2G/T-REC_LED 3G/REC_LED R1072 10K R1030 2.7K R1053 4.7K R1065 10K VIDEO_OUT AUDIO_MUTE-H OSD_V CTLCTL+ H.AMP_SW COMP ENV.DET H.SW C.SYNC
6
1 2 3 4 5 6 7 8 9
FROM/TO DECK CP1001 TMC-J12P-B2 CAP_FG CAP_VCO VCC CAP/M/F/R I_LIMIT GND[M] GND LD/CY_VCO CAP_CTL LDM_CTL CYL_FG/PG CYL_CTL W808
1M
L1002_1 22uH
10
R1052
X1001_1 1002T01003 CAP_FG 11 R1033 1M CAP_F/R CAP_LIMIT 80 TAB SW 0 NC 5.0 0 5.0 NC NC 5.0 5.0 NC 4.2 0 4.9 NC 5.0 NC 5.0 NC 0.3 81 79 1G/TV/VCR LED 78 2G/T-REC LED 77 3G/REC LED NC NC 76 4G 75 5G NC 0 2.4 2.3 0 5.0 0 0 74 73 72 71 70 69 68 GND VSS X1 OSC 2 OSC 1 TEST
6
R1025
22K
L1001 R1026 1M 15uH 820 D OSC OUT 48 49
R1003 3.3K 1/4W
5.0 5.0 67 66 65 CYL SPEED UP SERVICE CAP LIMIT
5.0 64 63 POWER_ON-H LDM_CTL
NC 62 RF_CH_SW
5.0 5.0 61 60 59 CAP FWD A.MUTE CENT LED
NC 58 TUNER_L
0
5.0 3.2 4.3 3.2 2.4 3.4 57 56 55 54 53 52 51 C.SYNC 4/2HD V.REC ST-H 4 FSC OUT P.OFF-L 4 FSC IN
83
CONTROL_IN W809 LDM_CTL
CAP_FG TV/VCR
82
REM_IN
CFG
84
R1042
85
12
SEG 9/JUST_CLK SEG 10/ACTIVE_ON-L REEL-T REEL-S POWER FAIL-H AT SLOW SP-L EP-L AUDIO OUT MUTE L SEG 1/RV/CATV SEG 2/LAG_SEL SEG 3/INDEX_ON/OFF
81 POWER ON L 82 REM IN
50 D OSC IN 49 VSS(OS) 48 AFC OSC
CHR BIAS CV OUT V.REF CV IN Vcc(OSD)
86
87
D1003 1SS133 D1004 1SS133
CYL_PG D1005 1SS133 R1010 10K 1/4W LED_VCC POWER_FAIL W851 14
88
89
91
CFG DPG
92
93
4
94
96
R1041
270
EOT BOT TAB_SW
CTL AMP(-) VDD (60K=TEST) DUMMY V.SYNC CTL GAIN SW VSS(SV) H.AMP SW C.ROTARY COMP
97
SEG 4 SLOW OFF SET AFT S.CURVE SEG 5 MS SEN-B MS SEN-A HIFI ENV ST SEL BOT-H KEY-B SEG 8 KEY-A A VSS FS/IIC CLK
34
35
0
BOT SENSOR Q1008 PNA2604M010R
95
0
CTL BIAS
IIC DATA
ENV DET
100 99
MXS01350MVP0
SW1001
R1004 8.2K
CENT SW Q1007 KRC103RTK
Y/C_CS
EOT-H
RESET
A VDD
GND
H.SW
5.0 R1007 8.2K 0 CENT_LED (LED_GND) GND
PG
31
32
0
CAP FULL
DRUM PWM
Hi Fi H.SW
CAP PWM
5.0 NC 0.7 NC 0.1 NC 5.0 NC 0 NC
36
D1001 LNA2702L010R
EOT SENSOR Q1006 PNA2604M010R
100
SEG 7
31 CTL-H(+)
CTL AMP
R1062
2.2K
37
5.0
5.1
R1058
2.2K
99
SEG 6
32 CTL-H(-)
DFG
38
39
40
TIMER SYSCON SERVO CONTROLLER IC IC1001 OEC0104B
90
VCC(SV)
41
42
CYL_FG
43
44
10K
REEL-T
45
R1009
46
CYL_DRIVE
47K
11
VCR-H(TV/VCR)
AFC LPF
47
5
10
5
4
98
33
CAUTION: DIGITAL TRANSISTOR
R1073_1 1K 1/4W
1 NC
AFT-S.CURVE
3
NC ENV.DET Y/C_CS H.SW
DUMMY_V.SYNC
2 3 0 5.1
6 7 8 4 5 9 0 5.0 5.0 5.0 5.0 5.0
10 11 12 13 14 15 16 17 18 0 0.1 4.3 0 4.7 5.0 5.0 0 0
19
20 21 22 23 24 25 26 27 28 29 30 5.0 5.0 0 5.0 5.0 5.0 4.8 0 0 0 56K 56K
3
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
KEY-B
KEY-A
R1034 6
R1006 47K 1/4W
1.2 REEL SENSOR Q1002 RPI-301 2 1 180 1/4W
2.4 W845
BOT
12
R1037
EOT
VIDEO H.SW TP1002
R1039 5.6K R1038 10K 1/4W
W835
REEL-T 10K 10K
3.3K 1/4W
CYL_DRIVE CONTROL_IN
0.01 B
R1002
NC C1053 B C1054 0.1 B F
R1047
R1046
R1066
C1017
5.2
PG ADJ VR1001 10K
3.3K
3
4 0 W833
R1044
CAUTION: SINCE THESE PARTS MARKED BY CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY
R1045
3.3K
10K
ARE
R1031
C1041
0.022
0.1
2
R1049 220 YK MS_SEN A Q1005 SG-233S 1.4 MS_SEN B Q1004 SG-233S 0.6 2 3 5.0 2 0.6 3 5.0 4.7K NC 5 NC NC NC SYSTEM RESET IC IC1003 R3111N311A/C 4
ATTENTION: LES PIECES REPAREES PAR UN ETANT DANGEREUSES AN POINT DE VUE SECURITE N'UTILISER QUE CELLS DECRITES DANS LA NOMENCLATURE DES PIECES
2
C1023
6.3V
OUT 1 5.0 1.3 R1051 33K 18K 5.0
IN 2
GND 3 0
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
1
1.6
4
1 0.4
4
A
B
C
D
16V 10 KA
1
R1050 100 R1087 33K R1083
RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL
E F G
PCB010 VMA224
1
C1021
H
G-3
G-4
A
B
C
D
E
F
G
H
POWER SCHEMATIC DIAGRAM
8
1.6A 125V CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE HAZARD, REPLACE ONLY WITH THE SAME TYPE FUSE 1.6A 125V (F501) ATTENTION: POUR UNE PROTECTION CONTINUE LES RISQUES D'INCEIE N'UTILISER QUE DES FUSIBLE DE MEME TYPE 1.6A 125V (F501) 330 (TUNER) R549 +32V 1/4W MTZJ24B W837 +12V
(SYSCON PCB)
TO TUNER GND
8
D501
7
MTZJ33B
7
P.CON+5V
D521 1SS244 50V 10 KA L501 0R3A433F20 1 S502 3 2 4 C518
D520
TO Y/C/AUDIO/CCD/HEAD AMP
D505 33K 1/2W 1N4005-EIC D508 1N4005-EIC D523 500V 100P B 1N4005-EIC RGP10J-EIC 500V 0.0047 B
C512_1
BLADE WIDE
R512
AC120V_60Hz CD501 0R414901 WHITE BLACK
P.CON+5V GND
6
S501 C504 275V 0.022 PHE840
6
FROM/TO SYSCON/SERVO L505_1 22uH W820 16V 470 YK 16V 220 YK 33K 1/4W R509 C519 C522 AT+12.6_V
FH501 EYF-52BC
200V 47 PK
3.3M 1/2W
C508
1N4005-EIC R502
W4BRH3.5X6X1
FH502 F501 EYF-52BC 51MS016L 1.6A125V
D528
C509
D511
C502 TRANSFORMER SWITCHING T501 8122009 500V 0.0027 B B501 W4BRH3.5X6X1 1 2 NC 3 10 D512 6.3V 1000 YK 9 8 7 6 NC SB140-EIC C514 D514 SB290S
POWER_ON-H
1.6A 125V
330K 1/2W
B502
L504_1 22uH
C505_1
R534
250V 0.0022 NU W841
MTZJ6.8B
5
6.3V 470 YK
AT+5.2V
5
4 5 SWITCHING Q503_2 2SC4160-OEC-YAC1
D525
0.4 220K 1/2W R547
0.018 B
C506
0.1 CONTROL Q502 2SD734 0
0.1 0
W852
33K
150
R544
C520
LED_VCC POWER_FAIL
D507 1SS133 C507 0.0047 B
W826
1 1W
220 1/4W
R514
4
4
P.CON+5V SW Q506 KTA1273_Y 5.2 5.1
R511 120 1/2W C534 0.012 B D502 1.2K 1/4W R537 1SS133 R506 1.3K +-1% -0.4 0.4 4.0 3.0 680 R518 R510
R521
0 5.0 R519 1K R530 390 1/4W 0 0
R527 22K
C529 0.0082 B
R524 1.8K
4
1
3
PHOTO COUPLER IC511 LTV-817M-VB
C515 0.0082 B 1.2K +-1% VOLTAGE CTL IC IC501 KIA431
P.ON SW Q508 KRC101MAT P.CON+5V (S/S) (CAP) (LDM) GND GND GND
3
2
1K
3
R516
OUT 3 3.0
GND 2 0
IN 1 2.5
M-CON B+ SW Q515 KTC3198 5.15 5.12 5.9 AT+5V[M-CON]
2
D506 1SS133
2
2
3
74.0 74.0
2.4 5.7
R548 1K 1/4W TO OPERATION 150K 1/4W PHOTO COUPLER IC505 LTV-817M-VB AT+5.2V P.CON+5V GND PCB010 VMA224 R531
1
4
CAUTION: DIGITAL TRANSISTOR
1
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
ATTENTION: LES PIECES REPAREES PAR UN ETANT DANGEREUSES AN POINT DE VUE SECURITE N'UTILISER QUE CELLS DECRITES DANS LA NOMENCLATURE DES PIECES
CAUTION: SINCE THESE PARTS MARKED BY CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY
ARE
NOTE: THE RESISTOR MARKED F IS FUSE RESISTOR. THE ALUMI ELECTROLYTIC CAPACITOR MARKED NP IS NON POLAR ONE.
1
A
B
C
D
E
F
G
H
G-5
G-6
A
B
C
D
E
F
G
H
OPERATION SCHEMATIC DIAGRAM
8
(SYSCON PCB)
8
7
REW/REV SW607 SKQNAED010
7
R605
PLAY SW606_1 SKQNAED010
6
FF/CUE SW605 SKQNAED010 6.8K 1/4W R604
13K
6
FROM/TO SYSCON/SERVO R603 REC/OTR SW604_1 3.9K
1G/TV/VCR_LED 2G/T-REC_LED POWER SW608 SKQNAED010 CP601_1 B2013H02-3P KEY-A KEY-B GND R601 R607 3.3K 3.3K 3 2 1 CP651_1 A2001WV2-3P KEY-A 3 2 1 KEY-B GND W838 W857 LTL-1CHEE-002A LTL-1CHEE-002A LTL-1CHEE-002A POWER ON LED D663 TV/VCR LED D664 LTL-1CHEE-002A T-REC LED D665 R658 560 1/4W R660 560 1/4W REC LED D666 CD651 CU230701 R659 560 1/4W 3G/REC_LED R657 P.CON+5V 560 1/4W 3G/REC_LED REM_IN KEY-B R602 2.7K KEY-A
5
SKQNAED010
5
STOP/EJECT SW603_1 SKQNAED010
1G/TV/VCR_LED 2G/T-REC_LED
FROM POWER
4
OS651 PIC-37043LO Vout 1
4
REM_IN
GND 2 B+ 3
W840
W824
AT+5.2V
(SYS_GND) CH DOWN SW660 SKHVBED010
GND
3
SKHVBED010
3
PCB270 VEA958
W864
CH UP SW659
KEY-B KEY-A
2
2
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
PCB010 VMA224
1
1
A
B
C
D
E
F
G
H
G-7
G-8
A
B
C
D
E
F
G
H
TUNER SCHEMATIC DIAGRAM
8
(SYSCON PCB)
RF-SW SW6001 SLD-12-592
5
8
CH4
4
CH3
TU6001 TMDH2-A34A R6005
3
2
1 NC
E
22K
7
25
26
1 R6006 RF_CONV_A.OUT REAR OUT JACK J4201_3 MSP-382V-18 PBSN VIDEO OUT TP4201 75 TV/VCR R6004 R4202 2
7
3 V
A.IN CH MB
2 10K 3 4 W844
H1 H2
A
W811 390 1/4W R4213_1
CONTROL 5 V.IN 6
C4201
1K 1/4W
6.3V 470 YK
W803 W816
FROM_NORMAL_A RF_CONV_A.OUT
6
RF AGC
8
NC NC C4209 16V 10 KA IIC_CLK_A IIC_DATA_A L6002 C6009_1 P.CON+5V 6.3V 220 YK 0.01 F C6010 22uH 0305 R6010 270 1/4W L6003 15uH C6014 0.001 Y +32V 0 BUFFER Q4201 KTA1266 3.3 2.6 +12V W815 R4205 C4204 10K R4201 470 1/2W 0.01 B
6
NC 9 CE 10 CLOCK 11 DATA 12 BM 13 PB 5V 14
5
FSC
15
FSC
5
R4210 100 W863 VIDEO_OUT
TU 32V 16 IF TP IF OUT 17 18
FRONT AV JACK VIDEO J4203 MSP-281V4-B
E
FRONT AV JACK MONO AUDIO J4205_1 MSP-281V1-B
1 2
E
1 2 R4209
H
H
16V 10 KA
4
A.OUT 21 SIF OUT 22 AFT 23 V.OUT 24
27 28
75
C6003_1
TUNER_V
W813
TUNER_A
4
NC AFT-S.CURVE 16V 10 KA C4211 0.022 B C6002 FRONT_A_IN-L
(TUNER)
FROM POWER
2
FROM/TO Y/C/AUDIO/CCD/HEAD AMP
FROM/TO SYSCON/SERVO
FRONT_V_IN
3
3
2
FROM_NORMAL_A TUNER_V FRONT_V_IN FRONT_A_IN-L TUNER_A FSC
GND
AFT-S.CURVE
IIC_DATA_A
VIDEO_OUT
P.CON+5V
+32V
+12V
IIC_CLK_A
TV/VCR
PCB010 VMA224
NOTE: THE DC VOLTAGE AT EACH PART WAS
1
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
CAUTION: SINCE THESE PARTS MARKED BY CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY
ARE
ATTENTION: LES PIECES REPAREES PAR UN ETANT DANGEREUSES AN POINT DE VUE SECURITE N'UTILISER QUE CELLS DECRITES DANS LA NOMENCLATURE DES PIECES
TUNER VIDEO SIGNAL PLAYBACK LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL
RECORD LUMINANCE SIGNAL RECORD COLOR SIGNAL AUDIO SIGNAL(REC) AUDIO SIGNAL(PB)
G H
1
A
B
C
D
E
F
G-9
G-10
A
B
C
D
E
F
G
H
INTERCONNECTION DIAGRAM
8 8
FULL ERASE HEAD ASS'Y H5002 1 FE HEAD (GND) FE HEAD (HOT) CP601_1 2 LM LOADING MOTOR M101 3 2 1
HALL SENSOR
MAIN COIL
ROTOR MAGNET
MR FG SENSOR VCC O G
KEY-A
KEY-B
GND
CP601
7
OPERATION PCB PCB270 VEA958
HALL HALL VCC IN
OUT SWITCH LOGIC
7
2
1
CD651 FFC
CP1001 1 2 CP651_1 3 4 5 6 7 3 2 1 8 9 10 11 12 CAP _FG CAP _VCO VCC CAP/M/ F/R I_LIMIT GND(M) GND LD/CY_VCO CAP _CTL LDM _CTL CYL_FG/PG CYL _CTL 1 2 3 4 5 6 7 8 9 10 11 12 CAPSTAN DD UNIT DECK MECHA ASS'Y M2001
CP4003
2 FE HEAD (GND)
FE HEAD (HOT)
KEY-A
KEY-B
BLADE WIDE
WHITE BLACK
S502
6
GND
AC120V_60Hz CD501
1
S501
6
RF-SW SW6001 3 CH TUNER,DEMODULATOR AND RF CONVERTER TU6001 RF IN
25
1 2 3 4 5 6
26
5
4 CH
RF OUT
5
7 REAR OUT JACK J4201_3 VIDEO OUT AUDIO_OUT A.IN 2
CH 3 FFC MB 4 CONTROL 5 V.IN 6 U-OUT V-OUT W-OUT M-COM GND (RF AGC) 8 NC 9 NC NC CYLINDER UNIT ASS'Y UN4001 9 8 7 SP-CH1 (R) SP_COM SP-CH2 (L) EP/LP-CH1 (R) EP