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MVR4052
SERVICE MANUAL
VIDEO CASSETTE RECORDER
ORIGINAL MFR'S VERSION B
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 You can find it in the back of your unit. 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 HI-FI/DEMODULATOR ............................................................................................................... E-7, E-8 OPERATION/POWER ................................................................................................................ E-9, E-10 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 HI-FI/DEMODULATOR .............................................................................................................. G-11, G-12 INTERCONNECTION DIAGRAM .................................................................................................. G-13, G-14 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 Yes No DECK Loading System Motor OVD-7 Front 3 4Head 2Head 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-I,A-1,J~ W W+1-W+84 45.75MHz 41.25MHz 4.50MHz No Yes 3 or 4 ch 66dBu /75ohm No Yes 120V,60Hz 9W at 120V 60Hz 1.8W at 120V 60Hz - kWh/Year Yes No 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 90dB 20Hz ~20kHz 0.01 %Wrms 60 dB 0.01 Yes Yes No No No Yes Yes Yes Yes No No No 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
Signal
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 Video Signal Input Level Output Level S/N Ratio (Weighted) Horizontal Resolution at SP Mode Audio Signal Input Level (0dB=0.775Vrms) Output Level S/N Ratio at SP (Weighted) Harmonic Distortion (1KHz) Frequency Response
at SP at LP at SLP
Hi-Fi Audio Signal
G-5
Interface
Switch
Front
Rear
Dynamic Range : More than Frequency Response Wow And Flutter : Less than Channel Separation : More than Harmonic Distortion : Less than 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 RF Output SW
A3-1
GENERAL SPECIFICATIONS
Indicator Power Stand by Rec/OTR Repeat TV/VCR Rec T-Rec Tape In Video Input Audio Input Other Terminal Video Input Audio Input Video Output Audio Output Euro Scart DC Jack 12V(Center +) VHF/UHF Antenna Input AC Inlet Approx. Net (Approx.) Gross (Approx.) Safety Radiation Operation Storage Yes No No No Yes Yes Yes No RCA x 1 RCA x 2 (Stereo) No No No RCA x 1 RCA x 2 (Stereo) No No F Type No W x D x H (mm) 360 x 229 x 95 3.2kg(7.1lbs) 3.8kg(8.4lbs) UL/CSA FCC/DOC 5oC - 40oC -20oC - 60oC Less then 80% RH Yes Character No Yes Yes Yes Yes Yes Yes Yes No No Yes (Calendar 12H) Yes Yes No No Yes Yes Yes Yes Yes No Yes No No Yes No Yes No No No Spanish No 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 -
Terminals
Front
Rear
G-6 G-7 G-8 G-9 G-10 G-11
Set Size Weight Regulation Temperature Operating Humidity On Screen Menu Display
Menu Type ATS Timer Rec Set Auto Repeat On/Off SAP On Off CH Set-Up TV/CATV Auto CH Memory Add/Delete 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 OSD Language Setting
G-12 G-13
OSD Language Display Indicator Indicator Type
English French English
A3-2
GENERAL SPECIFICATIONS
SP LP SLP AM PM F1,F2 RF Output CH G-14 Clock,Timer and Timer Back-up Calendar Timer Events One Touch Recording Max Time OTPB Valid Time 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 CH Up CH 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/VCR Sleep Timer Muting Clock/Counter Zero Return CM Skip Audio Select 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 1990/1/1 ~ 2081/12/31 8 prog/1 month 5 Hours No 5 sec. RC-EA No 3V UM-4 x 2 pcs 33 Keys Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No Yes Yes Yes No No No Yes Yes Yes Yes Yes Yes Yes Yes Yes No No No No No Yes Yes Yes No Yes Yes Yes Yes No No No No No No No No No No No
G-15
Remote Control
G-16
Features
A3-3
GENERAL SPECIFICATIONS
Remort Control Code 1/2 SQPB CATV Energy Star MTS(SAP) CM Skip(30sec x 6 Times) Owner's Manual 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 AV Cord (2Pin-1Pin) Registration Card PTB Sheet Tape Rewinder(Buyer Supply) 300 ohm to 75 ohm Antenna Adapter Carton 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 Material Cabinet Front No No Yes Yes Yes No Language w/Guarantee Card English/French Yes Yes No No No No No No No Yes(Single shield) No
G-17
Accessories
No No No No No No No No No No No No No No No No No No No Yes Single/White 420x291x160 As Per BUYER 's Yes 1Corner / 3Edges / 6Surfaces 80 3136Sets PS 94V2 DECABROM
G-18
G-19
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 4 screws 3 and remove the Operation PCB.
1
Top Cabinet
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
Deck Chassis
1 1
(A)
1
Front Cabinet (B)
2 2 2 2 2 2
3 3 3 3
Operation PCB
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.
2
1-2: FLAP (Refer to Fig. 1-2) 1. Open Flap to 90° and flex in direction of arrow (A), at the same time slide in direction of arrow (B). 2. Then lift in direction of arrow (C).
2
(A)
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 (JG001P) INSTRUCTIONS 1. Connect CH-1 on the oscilloscope to TP1002 and CH-2 to TP4201. 2. Playback the alignment tape. (JG001P) 3. Press and hold the Tracking-Auto button on the remote control more than 2 seconds to set tracking to center. 4. 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 J4204 J4203
T501
VR1001
TU6001 TP4001 TP1002
TP4201 J4201
SYSCON PCB
D2-2
Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM
X4001 100CT3R508
Q4012 Y/C/AUDIO/CCD/HEAD AMP IC IC4001 LA71201M-N-MPB 50 VX01 TIMMING 67 L H.SW H 66 CP4001 1 EP/LP-CH2 (L) 2 3 4 CYL 5 6 7 8 9 EP/LP_COM EP/LP-CH1 (R) SP-CH2 (L) SP_COM SP-CH1 (R) HF2 (L) HF_COM HF1 (R) 74 HI-FI/DEMODU LATOR HF1 HF_COM HF2 CP4003 FE HEAD 1 FE HEAD (HOT) 2 FE HEAD (GND) 8 AUTO BIAS 6 PB.EE 11 CP4002 6 HEAD AUDIO CONTROL 5 4 3 2 AUDIO PB AUDIO REC CTL+ CTLAE HEAD(-) 4 Q4001, Q4002 AUDIO PB SW 1 Q4003 SW 6 3 Q4006 BIAS OSC P. CON + 5V COIL, BIAS OSC T4001 Q4005 5 2 BIAS CTL 5 4 3 2 10 80 78 76 EQ AMP P R ALC DET L H H.SW 73 65 72 H H.AMP SW L P R GCA R FM AGC DELAY PB FM-EQ PB PHASE-EQ 9 7 REC AMP DOUBLE LIM FM DEM LINE AMP LPF SUB LPF P ACC AMP R KIL B.D. P 3.58M BPF1 PB AMP AGC AMP 49 BUFFER
Q4010 BUFFER 39 OUT CCD FM MOD WC DC CLAMP NL EMPHA V/I CONV Y-LPF R B-UP AMP Main CONV 3.58M BPF2 R YNR/ COMB N.L. DEEM NC1 Y/C MIX P FBC V-AGC R ENV DET 59 P ALC 6dB SYNC SEP 32 30 FSC FRONT_V_IN TUNER_V TO_NORMAL_A FROM_NORMAL_A HI-FI/DEMODULATOR TUNER R Chara INS. CONP 60 OUT 24 26 ENV. DET COMP DUMMY_V. SYNC OSD_V H.AMP SW/ AUDIO 58 MUTE 1/2 C ROT 57 RF SW IN VCA CLAMP 36 34 DETAL ENH SERIAL DECODER 37 55 54 53 Y/C_CS IIC_DATA IIC_CLK SYSCON/SERVO
41 PULL DRIVER REC FM-EQ KIL C-LPF
CLAMP P P
22 21
H. AMP_SW C. ROTARY H. SW AUDIO_MUTE-H SYSCON/SERVO
MUTE
1 AE HEAD(+)
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
18 19 20
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 IIC_CLK IIC_DATA V.REC ST-H HI-FI/DEMODULATOR
Y/C/AUDIO/CCD/ HEAD AMP
6 MS SEN-B
DUMMY V.SYNC 27 V.REC ST-H
56 28 59 43 32 31 29 30 14 24
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 54
POWER_FAIL POWER_ON-L POWER
89 POWER FAIL-H 81 POWER ON L
P.CON+5V AT+12.6V
Hi Fi H.SW HIFI ENV 23 4
AUDIO_MUTE-H HIFI_H.SW HIFI_ENV.DET ST_SELECT IIC_CLK IIC_DATA
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
40 CFG 39 DPG 60 CAP FWD 66 CAP LIMIT
ST SEL 10
AFT S. CURVE 11 AUDIO OUT MUTE-L VCR-H(TV/VCR) CV OUT TUNER-L
AFT-S.CURVE A_OUT_MUTE-L TV/VCR VIDEO_OUT
TUNER-L TUNER
21 CAP FULL 25 CAP PWM
CYL SPEED UP 38 DFG 65 LDM_CTL 63
93 84 45 58
TAB SW 80 GND 74
REM_IN KEY-B KEY-A OPERATION 1G/TV/VCR_LED 2G/T-REC_LED 3G/REC_LED
SW1001
X1001 1002T01003
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
IC1003 R3111N311A/C-TR
1
SYSTEM RESET IC
2
AT+5V(M-CON)
E-3
E-4
TUNER BLOCK DIAGRAM
FRONT AV JACK REAR OUT JACK VIDEO AUDIO L AUDIO R J4205 J4203 J4204 J4201 2 Q4201 SYSCON/SERVO VIDEO_OUT BUFFER 3 5 2 2 2 3
TUNER_V
P. CON + 12V
FRONT_V_IN
RF-SW SW6001 2
Y/C/AUDIO/CCD HEAD AMP
FSC FRONT_A_IN-R FRONT_A_IN-L
AUDIO_OUT_R AUDIO_OUT_L
HI-FI/DEMODULATOR
TU6001 3 Q4204 6 2 MUTE SW
Q4203 MUTE SW Q4202 MUTE SW RF_CONV_A. OUT TUNER_A
15
5 11 12 22 Q6001 TUNER MUTE SW
TV/VCR IIC_CLK IIC_DATA
SYSCON/SERVO
TUNER_L AUDIO OUT MUTE_L
23 24
AFT-S. CURVE
E-5
E-6
HI-FI/DEMODULATOR BLOCK DIAGRAM
HI-FI AUDIO/HEAD AMP/DEM IC IC5501 AN3663FBP
AGC INPUT SW HF2 24 AMP 10 9 NC 15 14 NC FRONT_A_IN-L FRONT_A_IN-R
HF1
22
AMP
Y/C/AUDIO/CCD /HEAD AMP
HF_COM
21
OUTPUT SW
AMP AMP RFC
53 57 59
AUDIO_OUT_R AUDIO_OUT_L RF_CONV_A. OUT
TUNER
PNR FROM_NORMAL_A TO_NORMAL_A
62 61
BPF
48
TUNER_A
FM LIM
30 29 V. REC_ST-H
DEM BLOCK 28 27 36 42 LOGIC 43 56 HIFI_ENV. DET HIFI_H. SW AUDIO_MUTE-H IIC_CLK IIC_DATA ST_SELECT
SYSCON/SERVO
E-7
E-8
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 KEY-A KEY-B
OS651
1 TV/VCR LED D664 3 T_REC LED D665
REM_IN SYSCON/TSERVO 1G/TV/VCR_LED
2G/T_REC_LED
REC LED D666
3G/REC_LED
POWER BLOCK DIAGRAM
T501 10 Q512 P. CON +12V SW Q509 P. CON +5V SW IC501 KIA431 D505, D508, D523, D528 Q503 SW Q502 CONTROL VOLTAGE CTL IC Q513
P. ON SW
+32V
5 2 4
7
P. CON +12V
8 6
P. CON + 5V
IC511 PHOTO COUPLER
3
1
Q515 M-CON B+ SW AT +5V[M-CON]
AT +12.6V
IC505 PHOTO COUPLER
POWER_ON-L L501
SYSCON/SERVO
POWER_FAIL
F501
AC IN
E-9
E-10
PRINTED CIRCUIT BOARDS SYSCON/OPERATION (INSERTED PARTS)
SOLDER SIDE
D664 W115 SW1001 R658
D665
D666
D663 W840
W161
Q1006 W136 R1076
W019 W018 W017 W015 W013 W016
TU6001 R1075
W834 L6002 W130 W131 W151
W032 W031 W030 W068 W011 R1003 R1022 W066 W065 W808 Q4005 W064 W062 R1010 D1003 W028
R548 IC511 C1001
C4065 C4062 C4067
W844
W801 C4050
L6003 C4209 W160 C6008 W157
R4033
IC501 W097
C5 05 _1
R4045 L4006 W106 C4063 L4005
W067
R6010
TP4001 TP1002 L5502 TP5501 C5512
C4059 C4046 X4001
R1038
R5519 W138 C5501 C5523 C5502 C5552 C5521
IC505 W809 D506
W096 W139 W137
D1005 D1004
C4070
W155 W804
Q4201
W817
C5555
R4020 W814 W807 C4030
R4004 L1002 Q4006
R4201 R6004 R4207 R4211 W810 C4201 TP4201
C5513 C5529
W111 C5538 C5517 C5534 C4009 W110 CP4001
C5518 C5526
C5525 C5532
Q4001 Q4002
W070 C4002
J4201_2
C504 S501
SW6001
C4014
R502
_A_V
S502 CD501
CP4
002
F-1
Q1008
C4211 J4203 J4204 SW605_3 W143 VR1001 W148 W149 W146 W154 C6003_1 W159 W153 C6010 W158
OS651 R657 R659 W824 R660 W036
J4205 W863 SW608_3 R604 SW606_3 W150 SW603_3 SW604_3 SW607_3 W117 W116 W113
R1043
C520 L505 R509
C514
CP651
TP1001 W081
L504
Q512 C517 Q515 Q509 W857 X1001_1 W037 R523
W072
W038 W079
D514 C519 B501 W852
W114 W077 W071 W074
W078
W075
D513 W006 C502 R549 D520 R520
C522 D524 Q1004 W004
W005
D512
W002 W001 R521
R531
R525
W029 W035 R1006 W033
W820
W112 W123 C1023 W091 W090 W119 W121 W122
D521
W851
W046 W838
D501 D525
C518
W034
00 Q1
L1001
2
R1002 W845
0 Q1
05
W010 T501 R511
W089 W088 W087 C1021 C1020 W085 R1031 W109 W082 W858 W859 C1038
W086 W084 W045 W829 C1006 C1022
D1002
R537
Q503_2
W043 W042
C1029
W147 CP601 SW602_3 SW601_3 W127 W128 D5501 W094 W107 W125 W126 W842 W815 R4047 W140 L5504 W141
W818 W027 W008 R1016 W022 W021 W020 W026 D507 W024
D502 W826 B502 W841 Q502 D511 R534
W828
W044
W041
W103 W083 W099
D1001 W095
W040 W060 W050 W012 W059
W058
W023
W025
R51 4
C509 C512_1
W101 W098 W092 C4058
W054
W053
W100
W102 C4048
W052
W051
W057
W056
W055 W061
C4049 W093 C4052 C4051
W048
W047 W049
R512
C508
D508 D528 D523
CP4 003
C5510 C5537 C5527 C5533
L5501 C5509 C5516 C5511 C5539
C4053 L4004
D505 R547
CP 10
C4045
01
W039
C4035
L4003
C4025
L501
C5536
C4040
C4010
C4013
L4001
C4004
C4034
C5531 C5548
T4001
1.6A125VOR250V
FH502 F501 FH501
C4031
C4012
C4027
C5549
R4005
C5547
W812
W069
F-2
R4021
SOLDER SIDE
PRINTED CIRCUIT BOARDS SYSCON/OPERATION (CHIP MOUNTED PARTS)
R5513 C5514
C5505_1
C5508
C5507 C5504
C5515 C5524 R605 R601 R1007 C5551 R5502 R5508 C5528 R5516 R5514 C5503 R5503 C6014 R607 R5507 R4205
R603
R4212 R602
Q4204
C6004
Q6001
Q4203
R4210 Q4202 R4202
C6009_1 R4209
01 55 IC
01 10 IC
F-3
C506 C534 C529 R524 C507 R527 R1004 R503 R516 Q513 R518 C515 R506 R1087 R1050 R544 R1083 R1013 R1061 Q1007 R1070 C1019 C1032 C1013 R1014 R1017 R1015 C1040 R1039 R1041 R4046 C1034 C1016 R1072 R1065 R1030 R1053 R1026 R1025 C1055 R1040 51 81 R1062 R1058 1 R1042 R1033 31 R1052 R4044 R1048 C1041 C1017 R1049 R1051 R1066 R1046 R1047 C1015 R1055 R1054 R1037 C1054 R1034 C1053 R4035 R4034 C1036 R4037 Q4011 C4054 Q4010 IC1003 C4061 C4060 R4036 R4043 R1045 R1044 Q4012 R4038 C4066 R4042 R4041 R4039 C4015 C4019 C4016_1 C4064 C4069 R510 R1009 C4006 R4010 C4005 R4001 C4038 R4025 C4057 R4023 R4011 C4037 R4024 Q4003 R4002 R4003 C4036 C4044 C4033 R4019 R4018 C4029 R4017 R4013 R4022 C4032 21 1 C4028 C4023 C4022 IC4001 41 C5553 49 61 R4012 C5540 R5510 C5530 33 17 C5546 C5544 C5543 C5541 C5542 C5545 C5506 1 R4206 R4204 R6005 R6006
F-4
A
B
C
D
E
F
G
H
Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM
8
H.AMP_SW AUDIO_MUTE-H C.ROTARY ENV.DET COMP H.SW
(SYSCON PCB)
P.CON+5V R4046 22K L4005 P.CON+5V IIC_DATA Y/C_CS IIC_CLK 47uH
8
12K 1/4W
L4006
47uH
R4044
R4047
R4041 1.8K 16V 47 YK 3.9
4.9 BUFFER Q4012 2SC2412K 0.01 B C4060 3.3K
22K
12K 1/4W
3.3 R4043
FROM POWER
R4045
FSC
C4070
7
P.CON+5V GND
0.1 F
C4063
7
FROM/TO TUNER FSC FRONT_V_IN
50V 1 KA C4064
50V 1 KA
C4062
C4065
C4058 6.3V 47 KA C4059 R4036 1.8K 1K 0.1 F R4038 50V 1 KA 680K C4061 0.01 B 3.8 3.2 R4037
0.022
B
R4039
0.1 F
8.2K
TUNER_V
C4069
C4066 2 R4042 100CT3R508 1.5K
FROM/TO HI-FI/DEMODUTATOR FSC FROM_NORMAL_A
C4067
0.022
B
4.9
X4001
TO_NORMAL_A
BUFFER Q4011 2SC2412K 4FSC
6
HF1 HF_COM HF2 GND 0.068 B 62 0 C4019 C4015 FROM/TO CYL CP4001 TOC-C09X-A1 0.047 F 65 1.8 1.9 1.8 L4001 68 P.CON+5V 22uH 0305 C4009 6.3V 47 KA C4013 0.1 B 5.0 1.8 R4012 1K 1.6 0 1.8 1.8
HA VCC
4.8 4.8 60 59 C4016_1 61 2.1
OUT ENV COMP DET KILL DET HA GND CHROMA DET ACC DET
P
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
6
BUFFER Q4010 2SA1037AK 1.6 0 3.2 C4048 36 2.5 50V 1 KA 35 3.2 3.3 C4049 KA 50V 1 KA C4053 50V 1 KA C4052 0 2.2 R4034 82K R4035 100K 2.2K 1/4W
SLD
B
PLL OUT
VSS
R4033
AUDIO C-ROT C-GND MUTE RF-SW HA SW IN
ALWAYS VDD 5V
4Fsc
CLOCK
0 1.6
FROM/TO SYSCON/SERVO 4FSC IIC_CLK IIC_DATA Y/C_CS DUMMY_V.SYNC V.REC_ST-H C.ROTARY AUDIO_MUTE-H OSD_V CTLCTL+ TUNER_V H.AMP_SW COMP ENV.DET FRONT_V_IN H.SW C.SYNC
TIMMING DRIVER CCD
BGA BGA
OUT
63
AUTO-BIAS VSS CLAMP
0.047 F 64 1.6
R
P
BEFORE
IN
AFTER
BGA
R P
CNC PB AMP B.D
P
66
5
9 8 7 6 5 4 3 2 1
HF1 (R) HF_COM HF2 (L) SP-CH1 (R) SP_COM SP-CH2 (L) EP/LP-CH1 (R) EP/LP COM EP/LP-CH2 (L)
R H
P R
VCA VCA CLAMP VCP
37
38
2.9
REC APC
PB APC
REC AFC
39
67
L
34
P
3.58M BPF2 Main CONV B-UP AMP ACC AMP ACC DET
5
C-LPF
69
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 6.3V 22 KA 3.6 4.1 5.0 4.4 3.2 2.1 0.1 B C4045 100 KA C4046 50V 1 KA L4004 22uH W801 1 OSD_V C.SYNC DUMMY_V.SYNC P.CON+5V 50V 0.22 C4051 KA
NL EMPHA FM MOD
R-EQ TEST NORMAL
73
R
74
P
75
A-GND
1 2 3
76
77
A-VCC ALC DET PB,EE EQ AMP SP,LP PB,EE REC:LPP R
15 1/4W 78 2.3 C4012 R4005 10K 1/4W R4013 C4023 8.2K 6.3V 22 KA C4014 6.3V 22 KA 470P B C4022 0.1 F Y/C/AUDIO/CCD/HEAD AMP IC IC4001 LA71201M-N-MPB W814 0 2.3
P
R
P
R
Y-VCC
VHS
SOPB
79
80
Vref 2.3V
B
Y-GND
3
FROM/TO HEAD AUDIO CONTROL CP4002 IMSA-9604S-06Z13 6 5 4 3 2 1 AUDIO PB AUDIO REC CTL+ CTLAE HEAD(-) AE HEAD(+) 0 AUDIOPB SW Q4001 KTC3198 0 C4002 TO FULL ERASE HEAD CP4003 TMC-T02X-E1 2 1 FE HEAD(GND) FE HEAD(HOT) GND HOT AUDIOPB SW 0 Q4002 KTC3198 0 0.7 560 R4002 10K 5 100V 0.022 MKT C4004 CTL+ CTLR4001 6 5 4 1 2 3 5.3
C4044
1 2.3 2.3 C4028
2 2.3 0.1 F
3 2.3
4 2.3
5 2.3
6 C4032
7 0 2.3 B 0.0033
8 2.3 R4022
9
10 11 12 13 14 15 0.8 4.8 1.1 1.1 1.4 2.0 820 R4023
KA
390P B
R4025
R4018 R4017
8.2K
33
6.3V
8.2K
50V 1 KA
L4003
0.01 B R4010
220 YK
C4030
2
0 BIAS OSC 0 Q4006 KTC3203_Y
R4011 22K C4010 R4020 6.3V 47 KA C4040 F
16V 10 KA
C4005
3.3K
100uH 0 0305 5.2
330K C4029 0.01 B
5.2
C4038
6.3V 220 YK
180P CH
C4031
COIL,BIAS OSC T4001 1626009
BIAS CTL Q4005 KTA1266
R4019
0.0012
B
5.6K
C4025
R4024
0.1 F
C4037
10P CH
V.REC_ST-H
22K C4033
50V 1 KA
C4035
0
25V 4.7
SW Q4003 KRA103RTK
C4027
C4034
5.2
C4057 1.5K
C4036
R4021
KA
P.CON+5V
W807
33K
6.3V
17 18 19 20 16 0 2.6 2.6 0.2 2.8 NC
21
TO_NORMAL_A
FM AGC FIL
MAIN EMPHA S DET FIL
4.7K
22
23
FM AGC
PB FM EQ S-EQ
24
P.CON+5V
R4004
W812 4.9
ALC
R P
LPF
LINE AMP
REC FM-EQ
MAIN DE-EM
V.SYNC SEP
25
2.3
DOUBBLE LIM
FM DEM
SUB LPF
QV/QH SYNC SEP
6DB
26
0
27
4
1.8
AGC TC2
28
Y-LPF
Y/C MIX
4
3
4 FROM_NORMAL_A 3 V.ENV TP4001 NC
2
0 0.015 B C4006
6.3V
10K
0.1
0.7
R4003
220 1/4W
CAUTION: DIGITAL TRANSISTOR
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
RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL AUDIO SIGNAL(REC) AUDIO SIGNAL(PB) PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL TUNER VIDEO SIGNAL
F G
PCB010 VMA224
1
A
B
C
D
E
H
G-1
G-2
A
FROM/TO POWER POWER_FAIL LED_VCC
B
C
D
E
F
G
H
SYSTEM CONTROL/SERVO SCHEMATIC DIAGRAM
FROM/TO TUNER IIC_DATA_A VIDEO_OUT IIC_CLK_A TUNER_L TV/VCR
8
POWER_ON-L AT+5V[M-CON] P.CON+5V AT+5.2V
(SYSCON PCB)
A_OUT_MUTE-L
AFT-S.CURVE
8
1K 1/4W
47K 1/4W
R1075
R1043
R1070
GND GND GND
(S/S) (MOTOR) (LED)
22K
AT+12.6_V
IIC_DATA
IIC_CLK
R1076
1K 1/4W
FROM/TO HI-FI/DEMODULATOR V.REC_ST-H
AUDIO_MUTE-H
V.REC_ST-H
LDM_CTL
C.SYNC
4FSC
7
TAB_SW CYL_DRIVE CAP_LIMIT
TUNER_L
CENT_LED
CAP_F/R
HIFI_ENV.DET HIFI_H.SW D1002 1SS133 AUDIO_MUTE-H IIC_CLK IIC_DATA 22P CH C1019 ST_SELECT 10K
7
1G/TV/VCR_LED
2G/T-REC_LED
C1055
C1001 2 FROM/TO DECK CP1001 TMC-J12P-B2 1 2 3 4 5 6 7 8 9 10 11 12 CAP_FG CAP_VCO VCC CAP/M/F/R I_LIMIT MOTOR_GND GND LD/CY_VCO CAP_CTL LDM_CTL CYL_FG/PG CYL_CTL CYL_DRIVE R1009 D1003 1SS133 D1004 1SS133 10K CYL_PG D1005 1SS133 POWER_FAIL W851 14 REEL-T CONTROL_IN W809 LDM_CTL TV/VCR R1042 47K REM_IN CAP_FG 3.3K 1/4W W808 L1002 22uH TSL0808 R1003 CAP_FG 11 CAP_F/R CAP_LIMIT 80 TAB SW 81 POWER_ON-L 0 5.0 0 5.0 NC NC 5.0 5.0 NC 4.2 0 4.9 NC 5.0 NC 5.0 0.3 79 1G/TV/VCR LED 78 2G/T-REC LED 77 3G/REC LED 76 4G 75 5G NC NC 16V 220 YK 3 1
3G/REC_LED
B
SERVICE TP1001
R1013
NC
C1036
0.1 F
33P CH
27P CH
0.022
FROM/TO Y/C/AUDIO/CCD/HEAD AMP 4FSC IIC_CLK IIC_DATA 15K 1/4W R1016 Y/C_CS DUMMY_V.SYNC V.REC_ST-H C.ROTARY C1016
R1040
C1032
6
10 R1025
C1034
1M
6
R1052
22K
1M
X1001_1 1002T01003 R1033 1M 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 NC
L1001 15uH 820 W818
5.0 5.0 67 66 65 CYL SPEED UP SERVICE CAP LIMIT
NC
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
0 58 TUNER_L 57 4/2HD
5.0 3.2 4.3 3.2 2.4 3.4 56 55 54 53 52 51 C.SYNC D OSC OUT 4 FSC OUT V.REC ST-H P.OFF-L 4 FSC IN 50 3.3
R1026
AUDIO_MUTE-H OSD_V CTLCTL+
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 W858 W859 CTL+ R1017 560 C1013 0.001 B R1014 6.8K CTLIIC_DATA IIC_CLK R1054 220 C1020 6.3V 47 KA R1048 270K C1015 220P CH 0.0047 B C1040 9 C1038 6.3V 22 KA C1006 0.1 F W829 W828 8 R1053 R1072 10K R1065 R1030 2.7K 4.7K C1022 6.3V 22 KA R1061 470K 7 R1022 1K 1/4W CAP_FG CYL_PG CYL_FG C1029 25V 4.7 KA VIDEO_OUT 10K
82
83
CFG
48
49
84
VCR-H(TV/VCR) 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 VDD (60K=TEST) SEG 4 SLOW OFF SET AFT S.CURVE SEG 5 MS SEN-B MS SEN-A HIFI ENV ST SEL BOT-H KEY-B KEY-A SEG 8 A VSS FS/IIC CLK DUMMY V.SYNC 99 100 SEG 6 SEG 7 32 CTL-H(-) 31 CTL-H(+) TIMER SYSCON SERVO CONTROLLER IC IC1001 OEC0104B 81 POWER ON L 82 REM IN 50 D OSC IN 49 VSS(OS) 48 AFC OSC
AFC LPF CHR BIAS CV OUT V.REF CV IN Vcc(OSD) VCC(SV) CFG DPG DFG CTL AMP CTL BIAS CTL AMP(-) CTL GAIN SW VSS(SV) H.AMP SW C.ROTARY COMP
47
5
H.AMP_SW COMP ENV.DET H.SW
5
85
86
87
44
45
46
89
42
CYL_FG R1010 10K 1/4W LED_VCC
88
43
C.SYNC FROM/TO OPERATION REM_IN KEY-B KEY-A 1G/TV/VCR_LED 2G/T-REC_LED 3G/REC_LED
91
90
4
5.14 0
93
38
A_OUT_MUTE-L BOT SENSOR Q1008 PNA2604M010R R1041 5.15 D1001 LNA2702L010R 0 270 R1058 EOT SENSOR Q1006 PNA2604M010R EOT BOT TAB_SW 2.2K R1062 2.2K
92
39
40
41
4
95
94
R1004 MXS01350MVP0
IIC DATA
ENV DET
SW1001
Y/C_CS
EOT-H
RESET
A VDD
GND
H.SW
5.15 R1007 0 8.2K CENT_LED (LED_GND) GND
PG
CENT SW Q1007 KRC103RTK
100 99
31
32
0.18
CAP FULL
DRUM PWM
Hi Fi H.SW
CAP PWM
5.0 NC 0.7 NC 0.1 NC 5.0 NC 0 NC
96
97
98
33
34
35
36
37
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
1 NC
2 0 5.1
3
4 HIFI_ENV.DET
5
6
7
8
9
AFT-S.CURVE
ST_SELECT
HIFI_H.SW
R1034 56K
R1037 56K
H.AMP_SW
C.ROTARY
3
DUMMY_V.SYNC
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 ENV.DET
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
8.2K
3
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
KEY-B
KEY-A
Y/C_CS
R1006 47K 1/4W REEL-T
0.01 B
1.2 REEL SENSOR Q1002 RPI-301 2 1 180 1/4W
2.4 W845
BOT
12
H.SW
EOT
VIDEO H.SW TP1002
6
R1039 5.6K 0.1 B R1038
CYL_DRIVE CONTROL_IN
COMP
R1002
3.3K
NC C1053 F B
CAUTION: SINCE THESE PARTS MARKED BY CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY
ARE
10K
10K
10K
3.3K R1045
R1031
5.2
3.3K 1/4W
3
R1044
4 0 PG ADJ VR1001 10K
R1066
C1017
10K 1/4W
C1041
2
R1049 NC 220 YK MS_SEN A Q1005 RPI-352Q02 1.4 MS_SEN B Q1004 RPI-352Q02 0.6 2 3 5.0 2 0.6 3 5.0 4.7K 5 NC C1023 NC 4 NC SYSTEM RESET IC IC1003 R3111N311A/C
ATTENTION: LES PIECES REPAREES PAR UN ETANT DANGEREUSES AN POINT DE VUE SECURITE N'UTILISER QUE CELLS DECRITES DANS LA NOMENCLATURE DES PIECES
R1047
R1046
0.022
C1054
0.1
2
CAUTION: DIGITAL TRANSISTOR
6.3V
OUT 1 5.0 1.3 5.0
IN 2
GND 3 0
PCB010 VMA224
1
1.6
4
1 0.4
4 R1051 100 R1087 R1083
1
R1050 33K 33K
16V 10 KA
18K
A
B
C
D
C1021
RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL
1
E
F
G
H
G-3
G-4
A
B
C
D
E
F
G
H
POWER SCHEMATIC DIAGRAM
8
(SYSCON PCB)
TO HI-FI/DEMODULATOR +5V +12V GND W842 TO TUNER (TUNER) GND +32V
8
R549 330 1/4W MTZJ24B
D501
7
MTZJ33B
11.8 P.CON+12V SW 12.4 Q512 KTC3203_Y
11.7 22K 1/4W R520 1SS133 D524
+12V
7
D521 1SS244 50V 10 KA AC120V_60Hz CD501 0R414901 BLADE WIDE L501 0R3A433F20 1 WHITE BLACK S502 C504 S501 275V 0.022 PHE840 200V 47 PK 1N4005-EIC FH501 EYF-52BC FH502 F501 EYF-52BC 51MS016L 1.6A125V C508 C509 3 2 4 C518
D520
AT+5.2V R525 220 50V 1 KA MTZJ13B C517 D513 1/4W P.ON SW Q513 12.7 KRC103RTK R503 0 0 22K P.CON+5V TO Y/C/AUDIO/CCD/HEAD AMP P.CON+5V GND FROM/TO SYSCON/SERVO POWER_ON-L
D505 33K 1/2W 1N4005-EIC D508 1N4005-EIC D523 500V 100P B RGP10J-EIC D511 500V 0.0047 B
R512
6
C512_1
6
C502 500V 0.0027 B TRANSFORMER SWITCHING T501 8122009
3.3M 1/2W
R502
D528 1N4005-EIC
W4BRH3.5X6X1
B502
B501 W4BRH3.5X6X1
D514 16V 470 YK SB290S C519
L505 W820 16V 220 YK R509 C522 22uH TSL0808 33K 1/4W AT+12.6_V
1.6A 125V 330K 1/2W
1 2 NC 3 4
10 D512 6.3V 1000 YK 9 8 7 6 NC SB140-EIC C514
L504 22uH TSL0808
C505_1
R534
MTZJ6.8B
250V 0.0022 NU
W841
15
0.4 220K 1/2W R547
0.018 B
C506
0.1 CONTROL Q502 2SD734 0
0.1
0
W852
33K
150
R544
SWITCHING Q503_2 2SC4160-OEC-YAC1
5
6.3V 470 YK
5
AT+5.2V
5
D525
C520
LED_VCC POWER_FAIL
D507 1SS133 C507 0.0047 B
W826
R514
1 1W
R511 120 1/2W C534 0.012 B D502 1.2K 1/4W R537 1SS133 R506 -0.4 0.4 4.0 3.0 1.3K +-1% 680 R518 R510
R527 22K
C529 0.0082 B
R524 1.8K
4
1
220 1/4W
4
4
R521
3
3
PHOTO COUPLER IC511 LTV-817M-VB
2
1K
P.CON+5V SW Q509 KTC3205_Y 5.2 5.1 (S/S) 5.9
C515 0.0082 B 1.2K +-1% VOLTAGE CTL IC IC501 KIA431
3
P.CON+5V GND GND GND
R523 390 1/4W
(CAP) (LDM)
OUT 3 3.0
GND 2 0
IN 1 2.5 5.15 5.12 5.9 AT+5V[M-CON]
2
2 D506 1SS133 3 74.0 74.0 2.4 5.7 PHOTO COUPLER IC505 LTV-817M-VB R548 1K 1/4W 1 4 M-CON B+ SW Q515 KTC3198
R516
2
TO OPERATION 150K 1/4W AT+5.2V P.CON+5V GND PCB010 VMA224 R531
CAUTION: DIGITAL TRANSISTOR
1.6A 125V
1
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)
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
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_3 SKQNAED010
7
R605
13K
PLAY SW606_3 SKQNAED010 6.8K 1/4W
6
R604
6
FF/CUE SW605_3 SKQNAED010
R603
3.9K
FROM/TO SYSCON/SERVO REC/OTR SW604_3 SKQNAED010 R602 2.7K 1G/TV/VCR_LED 2G/T-REC_LED 3G/REC_LED REM_IN KEY-B R658 STOP/EJECT SW603_3 SKQNAED010 POWER SW608_3 SKQNAED010 CP601 B2013H02-3P KEY-A KEY-B GND R607 3.3K 3 2 1 CD651 CU230701 CP651 A2001WV2-3P 3 2 1 KEY-A KEY-B GND R660 W838 W857 LTL-1CHEE-002A LTL-1CHEE-002A LTL-1CHEE-002A 560 1/4W TV/VCR LED D664 T-REC LED D665 LTL-1CHEE-002A REC LED D666 POWER ON LED D663 560 1/4W R659 560 1/4W 3G/REC_LED R657 P.CON+5V 560 1/4W FROM POWER 1G/TV/VCR_LED 2G/T-REC_LED KEY-A
5
5
R601
3.3K
4
CH DOWN SW602_3 SKQNAED010
CH UP SW601_3 SKQNAED010
OS651 PIC-37043LO Vout 1
REM_IN W840 W824
4
GND 2 B+ 3
AT+5.2V
(SYS_GND) PCB270 VEA958
GND
3
3
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
(SYSCON PCB)
8
RF-SW SW6001 SLD-12-592
5
8
CH4
4
CH3 REAR OUT JACK J4201_2 MSP-213V1-432 PB
TU6001 TCMN0682PA13D 6.3V 220 YK R6005 22K C6008
3
2
1 NC
25
26
E
1 2
E
4 5
7
R6006 10K
A.IN CH MB
2 3 4 W844
RF_CONV_A.OUT L VIDEO OUT TP4201 R4202 75 TV/VCR W810
3
H2 H1 H1
7
R
V
CONTROL 5 R6004 V.IN 6 1K 1/4W
RF AGC
8
NC R4212 AUDIO_OUT-R R4206 390 10K MUTE SW Q4204 2SC2412K 0 0 0 W804 AUDIO_OUT-L NC C4209 16V 10 KA IIC_CLK_A IIC_DATA_A L6002 6.3V 220 YK C6009_1 P.CON+5V +12V W815 R4205 10K MUTE SW Q4203 2SC2412K R4210 100 W863 FRONT AV JACK AUDIO R MSP-281V3-A 0 0 0 R4211 1K 1/4W R4201 470 1/2W R4204 390
6
6.3V 470 YK
C4201
NC 9 CE 10 CLOCK 11 DATA 12 BM 13 PB 5V 14 FSC 15
6
R4207 1K 1/4W
0 MUTE SW Q4202 KRA103RTK
5.0
AT+5.2V
5.0
A_OUT_MUTE-L
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
FSC
5
TU 32V 16 IF TP IF OUT 17
VIDEO_OUT
5
FRONT AV JACK VIDEO MSP-281V4-B
E
FRONT AV JACK AU