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MVR4046A
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 ..................................................................................... HOW TO ORDER PARTS ........................................................................................................... CONTENTS ................................................................................................................................. GENERAL SPECIFICATIONS .................................................................................................... DISASSEMBLY INSTRUCTIONS 1. REMOVAL OF MECHANICAL PARTS AND P. C. BOARDS ............................................ 2. REMOVAL OF DECK PARTS ............................................................................................ KEY TO ABBREVIATIONS ......................................................................................................... SERVICE MODE LIST ................................................................................................................. PREVENTIVE CHECKS AND SERVICE INTERVALS .............................................................. NOTE FOR THE REPLACING OF MEMORY IC ....................................................................... SERVICING FIXTURES AND TOOLS ........................................................................................ PREPARATION FOR SERVICING ............................................................................................. MECHANICAL ADJUSTMENTS ................................................................................................. ELECTRICAL ADJUSTMENTS .................................................................................................. BLOCK DIAGRAMS Y/C/AUDIO/CCD/HEAD AMP .................................................................................................. SYSTEM CONTROL/SERVO/DECK ....................................................................................... TUNER ..................................................................................................................................... HI-FI ......................................................................................................................................... OPERATION/POWER ............................................................................................................. PRINTED CIRCUIT BOARDS SYSCON/OPERATION/DECK ................................................................................................. SYSCON/OPERATION ............................................................................................................ SCHEMATIC DIAGRAMS Y/C/AUDIO/CCD/HEAD AMP .................................................................................................. SYSTEM CONTROL/SERVO .................................................................................................. TUNER ..................................................................................................................................... POWER ................................................................................................................................... OPERATION ........................................................................................................................... HI-FI ......................................................................................................................................... DECK ....................................................................................................................................... INTERCONNECTION DIAGRAM ................................................................................................ WAVEFORMS ............................................................................................................................. MECHANICAL EXPLODED VIEW ............................................................................................. CHASSIS EXPLODED VIEWS ................................................................................................... MECHANICAL REPLACEMENT PARTS LIST .......................................................................... CHASSIS REPLACEMENT PARTS LIST .................................................................................. ELECTRICAL REPLACEMENT PARTS LIST ...........................................................................
A1-1 A1-1 A2-1 A3-1~A3-6 B1-1 B2-1~B2-5 C1-1, C1-2 C2-1 C3-1, C3-2 C4-1 C5-1 C5-1 D1-1~D1-4 D2-1, D2-2 E-1, E-2 E-3, E-4 E-5, E-6 E-7, E-8 E-9, E-10 F-1, F-2 F-3, F-4 G-1, G-2 G-3, G-4 G-5, G-6 G-7, G-8 G-9, G-10 G-11, G-12 G-13, G-14 G-15, G-16 H-1, H-2 I-1 I-2, I-3 J1-1 J2-1 J3-1, J3-2
A2-1
GENERAL SPECIFICATIONS
G-1.Outline of the Product 3 G-2.VCR Format VHS Standard -Speed 1/2" Video Cassette Recorder
NTSC PAL SECAM PAL-M PAL-N VHS Hi-Fi Audio System G-3.Video Recording System : Rotary,slant azimuth two head helical scan system Luminance Component : FM recording Chrominance Component: Low frequency converted direct recording G-4.Broadcasting System US System M G-5.Color System NTSC PAL SECAM or Monochrome G-6.NTSC Playback(PAL60Hz) G-7.MESECAM G-8.Cassette Tape VHS type video cassette tape VHS-C type video cassette tape G-9.Tape Speed NTSC or PAL-M SP 33.35 mm/sec LP 16.67 mm/sec SLP 11.12 mm/sec Yes Yes No No
Width 12.65mm (1/2 Inch) Width 12.65mm (1/2 Inch) PAL or SECAM SP 23.39 mm/sec LP 11.69 mm/sec
G-10.Recording/Playback Time NTSC or PAL-M at SP Mode Max. 210 min. (with T-210 cassette) at LP Mode Max. 420 min. (with T-210 cassette) at SLP Mode Max. 630 min. (with T-210 cassette) PAL or SECAM at SP Mode Max. 300 min. (with E-300 cassette) at LP Mode Max. 600 min. (with E-300 cassette) G-11.Deck OVD-5 OVD-6 OVD-6S OVD-6S(Vertical) G-12.Rewind/Fast Forward Time(Approx.) FF:1' 48" / Rew:1' 48" (with T-120 cassette) (with E-180 cassette) G-13.Search Speed SP LP SLP G-14.Slow Speed SP LP SLP G-15.Frame Advance SP LP SLP 3 7 9 and 5 and 9 and 15 Times Times Times Times Times Times Times Times Times
1/5 ~ 1/30 1/5 ~ 1/30 1/5 ~ 1/30 1/10 1/10 1/10
G-16.Antenna Input Impedance VHF/UHF 75 ohm unbalanced
A3- 1
GENERAL SPECIFICATIONS
G-17.Tuner and Receiving Channel Tuner: Contactless Electric Tuner Oscar(W/O HYPER) Oscar(W/ HYPER) France CATV Others Channel coverage 2 ~ 69 , 4A , A-5 ~ A-1 , A ~ I , J ~ W , W+1 ~ W+84 Tuning System Frequency syn. Voltage syn. Others G-18.Preset Channel No -channels Allocation ch ~ ch ch ~ ch ch ~ ch G-19.Intermediate Frequency Picture(FP) 45.75 MHz MHz MHz Sound (FS) 41.25 MHz MHz MHz FP-FS 4.50 MHz MHz MHz G-20.RF Converter Output Channel Level/Impedance Sound Selector G-21.Stereo/Dual TV Sound Yes( NICAM 3 or 4 ch. 66 dBµ / Yes( G GERMAN ~ 75 I USA
ohm K) JAPAN)
No No
G-22.Video Signal Input Level 1 Vp-p / 75 ohm Output Level 1 Vp-p / 75 ohm S/N Ratio 50 dB (Weighted) Horizontal Resolution at SP Mode 230 G-23.Audio Signal Input Level Microphone Line RCA Output Level Line RCA S/N Ratio at SP Mode Harmonic Distortion : Frequency Response : at SP at LP at SLP
Lines
-dB / -Kohm -dB / -Kohm -8 dB / 50 Kohm -dB / -Kohm -8 dB / 1 Kohm(0dB=0.775 42 dB (Weighted) 1.5 % (1KHz) Mode 100 Hz ~ 10 Mode 100 Hz ~ 6 Mode 100 Hz ~ 4
Vrms)
KHz KHz KHz
Hi-Fi Audio Signal NONE Depth Multiplex Recording Rotary, Slant Azimuth Two Head System Helical Scan System Dynamic Range : More than 90 dB Wow And Flutter : Less than 0.01 % Wrms Channel Separation : More than 60 dB Harmonic Distortion : Less than 1 % G-24.Heads Video 4 FM Audio 2 Audio / Control 1 Erase 1 G-25.Motor: 3 Motors Tape/Cassette Loading Cylinder (Direct Drive) Capstan (Direct Drive) Rotary Heads Rotary Heads Stationary Head ( Full Track Erase Mono Stereo(L,R) )
A3- 2
GENERAL SPECIFICATIONS
G-26.Power Source 120 V AC 50Hz 11 1.5 -AC 60Hz W at AC 120 W at AC 120 kWh / Year V V 60 60 Hz Hz G-27.Power Consumption: Stand by: Per Year: G-28.Dimensions(Approx.) 360 mm(W) G-29.Weight(Approx.) G-30.Cabinet Material Cabinet Front: 240 Net Gross mm(D) : : 3.2 3.8 95 mm(H) 7.1 lbs) 8.4 lbs) DECABROM NON-DECA
Kg ( Kg ( 94HB 94V2 94V0
PS ABS
G-31.Cassette Loading System: Front Cassette Loading System G-32.Tape Counter: Linear Time Tape Counter G-33.Protector: Power Fuse Dew Sensor
G-34.Regulation Safety UL NEMKO SEMKO NOM Radiation FCC SABA CNS G-35.Temperature Operation Storage
CSA FEMKO NZ AS3159 DOC SI CISPR13 5 -20 ºC ºC ~ ~ 80
SAA DEMKO HOMOLO DENTORI PTT NZ DENTORI 40 60 %RH ºC ºC
SI IEC65 SABS UNE CE HOMOLO AS/NZS
CE CNS GOST NONE SEV UNE NONE
SEV SISIR
G-36.Operating Humidity : Less than
G-37.Clock and Timer Built-in 1 Month 8 Events Programmable Timer One Touch Recording : Max Time 5 Hours G-38.Timer back up Time More than 1/12 Minutes (at Power Off Mode) G-39.Terminals VHF/UHF Antenna Input/Output Front Video Input Front Audio Input x2 Rear Video Input Rear Audio Input Rear Video Output Rear Audio Output x2 21 Pin G-40.Indicator Power ( Red ) TV/VCR ( Red ) Play ( REC ( Red ) ) ( ATR ) T-REC ( Red ) ( Repeat ) ( Tape In ) NONE Din Type F-Type France Type
A3- 3
GENERAL SPECIFICATIONS
G-41.Display Fluorescent Indicator Yes No Clock/Counter,Channel,Timer Rec,OTR,Play,Rec,FF(Cue),Rew(Rev), Pause,ATR,Eject WKL,Y.M.D,Start,End AFT Repeat VCR Memory Index VPS PDC SP LP SLP AM PM On Screen Display Menu Clock Set( Calendar 12H 24H) Timer Rec Set Auto Repeat On/Off CH Set TV/CATV Auto CH Memory ADD/Delete Sap On/Off No Noise Back Ground Language G-CODE(or SHOWVIEW or PLUSCODE)No. Entry NICAM M1/2,NICAM Off,Audio Output Stereo,Audio Output,Bilingual Stereo,Audio Output,SAP Stereo,Audio Output Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause CH/AV Clock Memory Tape Counter Index Hotel Lock Tracking Hi-Fi Tape In Dirty Head G-42.OSD Language Eng Ger OSD Language Setting Eng Ger Not Applicable Fre Fre Spa Spa Ita Ita Por Por
Pin Code Tape Speed Repeat
Jan Jan
G-43.Carton Master Carton: Need No Need Content: ---Set Material: ---/ ---Corrugated Carton Dimensions: ---- mm(W) ---- mm(D) ---- mm(H) Description of Origin Yes No Gift Box Need No Need Material Single/Brown Corrugated Carton ( with Photo Label) Single/White Corrugated Carton ( with Photo Label) Single Full Color Carton W/Photo Dimensions: 430 mm(W) 310 mm(D) 165 mm(H) Design: As Per BUYER 's Description of Origin: Yes No Drop Test Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces Height 25cm 31cm 46cm 62cm 80cm 100cm Container Stuffing: 2,828 Sets / 40' container
A3- 4
GENERAL SPECIFICATIONS
G-44.Accessories Owner's Manual ( W/Guarantee Card) [English/French] Remote Control Unit Dew Caution Sheet Video Cassette Tape Battery (UM- 4 x 2 ) Safety Tip Toll Free Insert Sheet Guarantee Card Audio-Video Cord (RCA) Warning Sheet Quick Set-Up Sheet Information Sheet U/V Mixer 75 ohm Coaxial Cable ( Single Shield Double Shield) 300 ohm to 75 ohm VHF Antenna Adaptor 21pin Cable Car Cord G-45.Other Features Auto Head Cleaning Index Search Auto Tracking Auto Search CH Auto Set-Up/Auto Clock ATS VIDEO PLUS+, SHOWVIEW, G-CODE PDC HQ (VHS Standard High Quality) VPS Auto Power On, Auto Play, Auto Rewind, Auto Eject,Auto Power Off Premiere/ Canal+ Full OSD Forward / Reverse Picture Search SQPB One Touch Playback SAP CATV Channel Lock Auto CH Memory Anti Theft Just Clock Function Hotel Lock Kurupika Guide CM Skip(30s x 6 Times) Rental Game Position Self Seeking Dirty Head Warning Energy Star G-46.Switch Front Power Play Pause/Still System Select One Touch Playback Rear RF-Converter Output Channel Selector( TV/CATV Selector SIF Selector 1 or 2CH 3 or 4CH) Channel Up F.FWD/Cue Eject/Stop Input Select Channel Down Rew/Rev Rec/OTR Output Select
A3- 5
GENERAL SPECIFICATIONS
G-47.Remote Control Unit: RC-DC Glow in Dark Remocon Yes Power Source: D.C 3 V Battery UM - 4 x 2 Control Key :Total 40 Key 0 Ch Up 1 Ch Down 2 Input Select 3 Audio Select 4 TV/VCR 5 Pause/Still 6 Slow 7 Slow Speed Up 8 Slow Speed Down 9 Skip Search Menu Speed Set Up TV Monitor Set Down Index Enter Program Cancel Video Plus Call Program/Video Plus No
Power Eject Play Stop F.FWD Rew Timer Rec REC/OTR Auto Tracking Tracking Up Tracking Down Counter Reset Clock/Counter Zero Return One Touch Playback
A3- 6
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. Remove the screw 2. 3. Disconnect the following connectors: (CP1001, CP1002, CP1003, CP4001, CP4002 and CP4003). 4. Remove the Deck Chassis in the direction of arrow.
1 1 2 1
Deck Chassis
1
1
(A)
1
Front Cabinet (B)
2 2 2 2 2 2
Operation PCB
2
33 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 Syscon PCB in the direction of arrow (A). 3. Unlock the 2 supports 2. 4. Remove the Jack Plate in the direction of arrow (B).
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
2
1
(C)
(A)
(B)
Jack Plate
(B)
Flap
Bottom Plate
Fig. 1-2
Fig. 1-4
B1-1
DISASSEMBLY INSTRUCTIONS
2. REMOVAL OF DECK PARTS
2-1: TOP BRACKET (Refer to Fig. 2-1) 1. Remove the 2 screws 1. 2. Slide the 2 supports 2 and remove the Top Bracket. NOTE
Tape Guide L
NOTE When you install the Tape Guide L, install as shown in the circle of Fig. 2-3-B. (Refer to Fig. 2-3-B)
When you install the Top Bracket, install the screw (1) first, then install the screw (2).
REC Lever (2)
1
Top Bracket
(1)
1
Top Bracket · The REC Lever is not installed on the Video Cassette Player.
Fig. 2-3-B
2-4: CASSETTE HOLDER ASS'Y (Refer to Fig. 2-4)
2
Main Chassis Main Chassis · Screw Torque: 5 ± 0.5kgf·cm
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. Fig. 2-1
Cassette Side R Main Chassis Locker R
2-2: FLAP LEVER/TAPE GUIDE R (Refer to Fig. 2-2) 1. Move the Cassette Holder Ass'y to the back side. 2. Remove the Polyslider Washer 1. 3. Remove the Flap Lever. 4. Unlock the 3 supports 2 and remove the Tape Guide R.
Tape Guide R Flap Lever Cassette Side L Main Chassis
Fig. 2-4
2
2-5: CASSETTE SIDE L/R (Refer to Fig. 2-5)
2 2 1
Main Chassis
1. Unlock the 4 supports 1 and then remove the Cassette Side L/R. Fig. 2-2 NOTE When you install the Cassette Side R, be sure to move the Locker R after installing.
1 1
2-3: TAPE GUIDE L (Refer to Fig. 2-3-A) 1. Move the Cassette Holder Ass'y to the back side. 2. Unlock the 2 supports 1 and remove the Tape Guide L. 3. Remove the REC Lever. (Recorder only)
REC Lever Locker R Tape Guide L Cassette Side R Cassette Side L
1
1
1
Fig. 2-5
1
Main Chassis · The REC Lever is not installed on the Video Cassette Player.
Fig. 2-3-A
B2-1
DISASSEMBLY INSTRUCTIONS
2-6: LINK ASS'Y (Refer to Fig. 2-6) 1. Set the Link Ass'y to the Eject position. 2. Remove the (A) side of the Link Ass'y first, then remove the (B) side. 2-9: TENSION ASS'Y (Refer to Fig. 2-9-A) 1. Move the Inclined S Ass'y to the back side. 2. Remove the Tension Spring. 3. Unlock the support 1 and remove the Tension Arm Ass'y. 4. Remove the Tension Adjust. 5. Unlock the 2 supports 2 and remove the Tension Band Ass'y. 6. Unlock the support 3 and remove the Tension Holder. 7. Remove the SS Brake Spring. 8. Remove the SS Arm Brake.
Tension Adjust (B) (A) Link Ass'y
Link Ass'y
2 2
Main Chassis
Tension Band Ass'y
Main Chassis
Fig. 2-6
Tension Spring Tension Arm Ass'y
2-7: LOADING MOTOR ASS'Y (Refer to Fig. 2-7) 1. Remove the Link Lever. 2. Remove the Dumper Spring. 3. Remove the 2 screws 1. 4. Unlock the support 2 and remove the Loading Motor Ass'y. 5. Unlock the 2 supports 3 and remove the Deck PCB (BOT).
1
Loading Motor Ass'y SS Brake Spring SS Arm Brake
1 3
Tension Holder
Inclined S Ass'y
Fig. 2-9-A NOTE When you install the Tension Adjust, install as shown in Fig. 2-9-B. (Refer to Fig. 2-9-B)
3
Main Chassis Adjust the direction of the Marker to inside.
Dumper Spring
2
1
Deck PCB (BOT) Link Lever
Fig. 2-9-B 2-10: T BRAKE ASS'Y (Refer to Fig. 2-10) 1. Remove the T Brake Spring. 2. Remove the T Brake Ass'y. Fig. 2-7
T Brake Ass'y
· Screw Torque: 5 ± 0.5kgf·cm
2-8: SENSOR COVER L2 (Refer to Fig. 2-8) 1. Unlock the support 1 and remove the Sensor Cover L2.
Main Chassis T Brake Spring Sensor Cover L2
1
Fig. 2-8
Fig. 2-10
B2-2
DISASSEMBLY INSTRUCTIONS
2-11: S REEL/T REEL (Refer to Fig. 2-11) 1. Remove the S Reel and T Reel. 2. Remove the 2 Polyslider Washers 1. 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. 2-11) Do not adhere the stains on it. 5. When you install the reel, clean the shaft and oil it (FL OIL #6115). (If you do not oil, noise may be heard in FF/ REW mode.) 6. After installing the reel, adjust the height of the reel. (Refer to MECHANICAL ADJUSTMENT)
S Reel
NOTE 1. Do not touch the Pinch Roller. (Use gloves.) 2. When you install the Pinch Roller Block, install as shown in the circle of Fig. 2-12-B. (Refer to Fig. 2-12-B)
Fig. 2-12-B 2-13: A/C HEAD (Refer to Fig. 2-13-A) 1. Remove the screw 1. 2. Remove the A/C Head Base. 3. Remove the 3 screws 2. 4. Remove the A/C Head and A/C Head Spring. NOTE
(A)
1
T Reel
(A)
1
1. Do not touch the A/C Head. (Use gloves.) 2. When you install the A/C Head Spring, install as shown in Fig. 2-13-B. (Refer to Fig. 2-13-B) 3. When you install the A/C Head, tighten the screw (1) first, then tighten the screw (2), finally tighten the screw (3).
(1) (3)
2
2
Fig. 2-11 2-12: PINCH ROLLER BLOCK/P5-3 ARM ASS'Y (Refer to Fig. 2-12-A) 1. Remove the P5 Spring. 2. Remove the screw 1. 3. Unlock the 2 supports 2 and remove the Cassette Opener. 4. Remove the Pinch Roller Block, Pinch Roller Arm Spring, Pinch Roller Lever Ass'y and P5-3 Arm Ass'y.
1
P5 Spring
2
(2) A/C Head
A/C Head Spring
1
A/C Head Base · Screw Torque: 4 ± 0.5kgf·cm (Screw 1)
Fig. 2-13-A
2
Cassette Opener
2
P5-3 Arm Ass'y Pinch Roller Block Pinch Roller Arm Spring Pinch Roller Lever Ass'y Spring Position
Fig. 2-13-B
2-14: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-14) 1. Remove the screw 1. 2. Remove the FE Head.
1
FE Head
Main Chassis
· Screw Torque: 5 ± 0.5kgf·cm
Fig. 2-12-A
· The FE Head is not installed on the Video Cassette Player. · Screw Torque: 4 ± 0.5kgf·cm
Fig. 2-14
B2-3
DISASSEMBLY INSTRUCTIONS
2-15: AHC ASS'Y/CYLINDER UNIT ASS'Y (Refer to Fig. 2-15) 1. Unlock the support 1 and remove the AHC Ass'y. 2. Remove the 3 screws 2. 3. Remove the Cylinder Unit Ass'y. NOTE 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.
Pinch Roller Cam E-Ring Main Cam
1
Middle Gear
2
Joint Gear P5 Cam
AHC Ass'y
Fig. 2-17-A
Cylinder Unit Ass'y
1
NOTE When you install the Pinch Roller Cam, P5 Cam and Main Cam, align each marker. (Refer to Fig. 2-17-B)
Pinch Roller Cam
Check the hole of Main Chassis can be seen.
P5 Cam
2 (1)
(2) 2 · Screw Torque: 3 ± 0.5kgf·cm
2
(3)
Fig. 2-15
Marker
Main Cam
2-16: CAPSTAN DD UNIT (Refer to Fig. 2-16) 1. Remove the Capstan Belt. 2. Remove the 3 screws 1. 3. Remove the Capstan DD Unit. Fig. 2-17-B
Capstan Belt Capstan DD Unit
2-18: CLUTCH ASS'Y (Refer to Fig. 2-18) 1. Remove the Polyslider Washer 1. 2. Remove the Clutch Ass'y, Ring Spring and Coupling Gear. 3. Unlock the 2 supports 2 and remove the Clutch Lever.
1
1
· Screw Torque: 5 ± 0.5kgf·cm
1 1
Clutch Ass'y
Fig. 2-16
Ring Spring
2-17: MIDDLE GEAR/MAIN CAM (Refer to Fig. 2-17-A) 1. Remove the Polyslider Washer 1, then remove the Middle Gear. 2. Remove the E-Ring, then remove the Main Cam, P5 Cam and Pinch Roller Cam. 3. Remove the Polyslider Washer 2, then remove the Joint Gear.
Coupling Gear
2
Clutch Lever
2
Fig. 2-18
B2-4
DISASSEMBLY INSTRUCTIONS
2-19: LOADING GEAR S/T ASS'Y (Refer to Fig. 2-19-A) 1. Remove the E-Ring 1 and remove the Main Loading Gear. 2. Remove the Capstan Brake Spring. 3. Slide the Main Rod and remove the Capstan Brake Ass'y. 4. Remove the Main Rod, Tension Lever, Clutch Actuator, Idler Arm Ass'y. 5. Remove the screw 2. 6. Remove the LED Reflecter. 7. Remove the Loading Arm S Ass'y and Loading Arm T Ass'y. 8. Remove the Loading Gear S and Loading Gear T. 9. Remove the Loading Gear Spring.
Capstan Brake Spring Capstan Brake Ass'y
2. When you install the Clutch Actuator, install as shown in the circle of Fig. 2-19-C. (Refer to Fig. 2-19-C)
Clutch Actuator
Fig. 2-19-C 2-20: INCLINED S/T ASS'Y (Refer to Fig. 2-20) 1. Unlock the support 1 and remove the P4 Cover. 2. Remove the screw 2. 3. Unlock the support 3 and remove the Loading Gear Holder. 4. Remove the Inclined S. 5. Remove the Inclined T. 6. Remove the 2 screws 4, then remove the Guide Roller. NOTE Do not touch the roller of Guide Roller.
2
Loading Gear Holder
1
Main Loading Gear Main Rod
Tension Lever Loading Gear T Idler Arm Ass'y
LED Reflecter
2
Loading Gear Spring Loading Arm T Ass'y Loading Gear S
Clutch Actuator
Loading Gear Spring
Guide Roller
3
Loading Arm S Ass'y Inclined S
4
Guide Roller
4
· Screw Torque: 5 ± 0.5kgf·cm
Fig. 2-19-A
1
Inclined T P4 Cover
NOTES 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. 2-19-B)
Marker
Main Loading Gear
· Screw Torque: 5 ± 0.2kgf·cm (Screw 2) · Screw Torque: 0.7 ± 0.2kgf·cm (Screw 4)
Fig. 2-20
Marker
Loading Arm T Ass'y
Loading Arm S Ass'y
Fig. 2-19-B
B2-5
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 both PLAY button and CH UP button on the set for more than 2 seconds. Operations Initialization of the factory. NOTE: Do not use this for the normal servicing. PLAY/REC total hours are displayed on the TV Monitor. Refer to the "PREVENTIVE CHECKS AND SERVICE INTERVALS" (CONFIRMATION OF USING HOURS). Can be checked of the INITIAL DATA of MEMORY IC. Refer to the "NOTE FOR THE REPLACING OF MEMORY IC". 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"
While pressing the CH UP key on the set, press the FF key on the set for more than 2 seconds.
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.
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
CONFIRMATION OF USING HOURS
PLAY/REC total hours can be checked on the TV Monitor. Total hours are displayed in 16 system of notation. 1. Connect the set to TV Monitor. 2. Turn on the POWER. 3. While pressing the CH UP button on the set, press the FF button on the set for more than 2 seconds. 4. Adjust the ADDRESS to "7D" by SET +/- button and read the DATA. (This DATA becomes the thousands digit and hundreds digit value of the following formula.) 5. Adjust the ADDRESS to "7E" by SET +/- button and read the DATA. (This DATA becomes the tens digit and ones digit value of the following formula.) 6. After the confirmation of using hours, turn off the power.
INIT 01 EB
ADDRESS DATA
(16 x 16 x 16 x thousands digit value) + (16 x 16 x hundreds digit value) + (16 x tens digit value) + (ones digit value)
C3-1
PREVENTIVE CHECKS AND SERVICE INTERVALS
CLEANING
NOTE After cleaning the heads with isopropyl alcohol, do not run a tape until the heads dry completely. If the heads are not completely dry and alcohol gets on the tape, damage may occur. 1. AUDIO CONTROL HEAD Wrap a piece of chamois around your finger. Dip it in isopropyl alcohol and clean the audio control head by wiping it horizontally. 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
C3-2
NOTE FOR THE REPLACING OF MEMORY IC
If a service repair is undertaken where it has been required to change the MEMORY IC, the following steps should be taken to ensure correct data settings while making reference to TABLE 1.
INI 00 08 INI 0D 0C INI 01 00 INI 0E 0C INI 02 00 INI 0F 8C INI 03 64 INI 10 68 INI 04 64 INI 11 5C INI 05 4A INI 12 53 INI 06 0A INI 13 00 INI 07 0B INI 14 00 INI 08 26 INI 15 00 INI 09 8A INI 16 00 INI 0A 45 INI 17 00 INI 0B 0C INI 18 00 INI 0C 08 INI 19 00
ADDRESS DATA ADDRESS DATA
Table 1 1. 2. 3. 4. Connect the set to TV Monitor. Turn on the POWER. While pressing the CH UP key on the set, press the FF key on the set for more than 2 seconds. ADDRESS and DATA will appear on TV Monitor as FIG 1.
INIT 01 EB
ADDRESS DATA
Fig. 1 5. ADDRESS is now selected and should "blink". Using the SET + or - keys on the remote, step through the ADDRESS until required ADDRESS to be changed is reached. 6. Press ENTER to select DATA. When DATA is selected, it will "blink". 7. Again, step through the DATA using SET + or - keys until required DATA value has been selected. 8. Pressing ENTER will take you back to ADDRESS for further selection if necessary. 9. Repeat steps 5 to 8 until all data has been checked. 10. When satisfied correct DATA has been entered, turn POWER off (return to STANDBY MODE) to finish DATA input. The unit will now have the correct DATA for the new MEMORY IC.
C4-1
SERVICING FIXTURES AND TOOLS
(For 2 heads model) VHS Alignment Tape JG001 (VN 2 S-LI6 3 ) JG001A (VN 2 S-CO13 ) JG001Q (VN 2 S-LI6 3 H) JG001T (VN 2 S-X6 3 ) (For 4 heads model) VHS Alignment Tape JG001B (VN 1 S-LI6 3 ) JG001I (VN 1 S-CO13 ) JG001P (VN 1 S-LI6 3 H) JG001S (VN 1 S-X6 3 )
JG002B Adapter JG002E Dial Torque Gauge (10~90gf·cm) JG002F (60~600gf·cm)
JG005 Post Adjustment Screwdriver Part No. SV-TG0-030-000 (small)
JG153 X Value Adjustment Screwdriver
JG022 Master Plane
JG024A Reel Disk Height Adjustment Jig
JG100A Torque Tape (VHT-063)
JG154 Cable
Tentelometer
Part No. JG001 JG001A JG001Q JG001T JG001B JG001I JG001P JG001S JG002B JG002E JG002F JG005 JG153 JG022/JG024A JG100A JG154 Monoscope, 6KHz (For 2 heads model) Color Bar, 1KHz (For 2 heads model) Hi-Fi Audio (For 2 heads Hi-Fi model) X Value Adjustment (For 2 heads model) Monoscope, 6KHz (For 4 heads model) Color Bar, 1KHz (For 4 heads model) Hi-Fi Audio (For 4 heads Hi-Fi model) X Value Adjustment (For 4 heads model)
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 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.
C5-1
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. Confirm that "A" of the reel disk is lower than "B" of the reel disk height adjustment jig (JG024A) , and is higher than "C". If it is not enough height, adjust to 10(+0.2, -0) mm with the height adjustment washer. 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 Tension Adjust until the edge of the Tension Arm is positioning within 0.5mm range from the standard line center of Main Chassis. After this adjustment, confirm that the cut position is located in "A" area as shown in Fig. 1-2-B. If it is located in "B" area, adjust again. 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) Standard line center of Main Chassis Tension Adjust
Fig. 1-2-A
Reel Disk Height Adjustment Jig (JG024A)
(A) Cut Position
(B) Tension Adjust
Fig. 1-2-B 1-3: CONFIRMATION OF PLAYBACK TORQUE AND BACK TENSION TORQUE DURING PLAYBACK Fig. 1-1-A
Reel Disk Height Adjustment Jig (JG024A) (B)
Reel Disk
1. Load a video tape (T-120) recorded in standard speed mode. Set the unit to the PLAY mode. 2. Install the tentelometer as shown in Fig. 1-3. Confirm that the meter indicates 20 ± 2gf in the beginning of playback. · USING A CASSETTE TYPE TORQUE TAPE (JG100A) 1. After confirmation and adjustment of Tension Post position (Refer to item 1-2), load the cassette type torque tape (JG100A) and set to the PLAY mode. 2. Confirm that the right meter of the torque tape indicates 60~110gf·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
Master Plane (JG022)
10(+0.2, -0)mm (C)
(A) Height Adjustment Washer 2.6x4.7xT0.13 2.6X4.7xT0.25
Video Tape
Fig. 1-1-B
P1 Post
Guide Roller
Fig. 1-3 D1-1
MECHANICAL ADJUSTMENTS
1-4: CONFIRMATION OF VSR TORQUE 1. Operate within 4~5 seconds after the reel disk begins to turn. 2. Install the Torque Gauge (JG002F) and Adapter (JG002B) on the S Reel. Set to the Rewind mode. (Refer to Fig.1-4) 3. 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) 1. Set to the STOP mode. 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) 1. Set to the STOP mode. 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 45~70gf·cm.
Torque Gauge/Adapter (JG002F/JG002B)
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 After adjustment, confirm and adjust A/C head. (Refer to item 2-2)
CH-1 Envelope (TP4001)
Torque Gauge/Adapter (JG002E/JG002B)
CH-1 Track CH-2 SW Pulse (TP1002)
CH-2 Track
S Reel
Envelope
T Reel
(1)
Fig. 1-4 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
CH-3 Audio (2)
Fig. 2-1-A
Entrance
Exit
Max
T Brake Spring/Tension Spring
A
B
Max
A:B=3:2
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
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. 2-1-A. 2-4: CONFIRM HI-FI AUDIO (Hi-Fi model only) 1. Connect CH-1 of the oscilloscope to TP4001, CH-2 to TP1002 and CH-3 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 the Tracking Down button and count number of steps which the audio output is changed from Hi-Fi (10KHz) to MONO (6KHz). 6. Confirm that the difference between these counted steps number in the above items are within 2 steps. If the difference are more than 3 steps, do Tape Running Adjustment again. (Refer to item 2-3)
Stamp Mark
Fig. 2-2-A
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
5
6
4
3 7 2 1 8
10
9
1. Tension Adjust 2. Tension Arm 3. Guide Roller 4. P1 Post 5. Audio/Control Head
6. X value adjustment driver hole 7. P4 Post 8. T Brake Spring 9. T Reel 10. S Reel
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
VR1001 T501
TU6001 TP4001 TP1002
J4201
TP4201
SYSCON PCB
D2-2
Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM
X4001 3.579545MHz Q4008 Q4007 BUFFER Q4009 BUFFER
Y/C/AUDIO/CCD/HEAD AMP IC IC4001 LA71077BM-MPB
61 VX01 85 L H 84 CP4001 1 EP/LP-CH2 (L) 2 EP/LP_COM 3 EP/LP-CH1 (R) 4 SP-CH2 (L) CYL 5 SP_COM 6 SP-CH1 (R) 7 8 9 HF2 (L) HF_COM HF1 (R) 91 HI-FI HF1 HF_COM HF2 CP4003 FE HEAD 1 FE HEAD (HOT) 2 FE HEAD (GND) 6 AUTO BIAS 4 PB.EE 99 CP4002 6 5 HEAD AUDIO CONTROL 4 3 2 1 AUDIO PB AUDIO REC CTL+ CTLAE HEAD(-) AE HEAD(+) 4 1 6 3 Q4006 BIAS OSC COIL, BIAS OSC T4001 5 2 3 L 89 90 H H.SW FM AGC DELAY PB FM-EQ 82 88 83 H H.AMP SW L 62
BUFFER
51 PULL TIMMING
53
49 OUT
47 4FSC SYSCON/SERVO/ DECK
DRIVER REC FM-EQ FM MOD
CCD WC DC
CLAMP NL EMPHA V/I CONV Y-LPF R R YNR/ COMB N.L. DEEM NC1 Y/C MIX VCA CLAMP DETAL ENH CLAMP P P
55 30 19 25 28
INPUT_SEL TRICK_PB-H/EE-H DOC_XO_CTL
H.SW
AGC AMP
KIL C-LPF
P
R GCA R P ACC AMP R B-UP AMP
Main CONV P
3.58M BPF2
46 44
3.58M BPF1 KIL B.D. PB AMP
T/C R/P 16 AUDIO R/P 17 HA SW IN 15 1/2 FBC C ROT 14 RF SW IN 13 AUDIO 12 MUTE H.A R/P 11 ENV DET 93 Chara INS. Q4004 CONP 94 OUT 31 35 34 BUFFER
REC/EE/PB
H. AMP_SW C. ROTARY H. SW AUDIO_MUTE-H V. REC_ST-H ENV. DET COMP DUMMY_V. SYNC OSD_V C. SYNC SYSCON/SERVO/ DECK
PB PHASE-EQ 7 5 REC AMP
DOUBLE LIM
FM DEM
SUB LPF V-AGC
P
R
P EQ AMP LINE AMP MUTE ALC
R
6dB SYNC SEP 98 97 78 76 42 40
2
1
100
96
Q4005 BIAS CTL
FRONT_V_IN TUNER_V
TUNER
TO_NORMAL_A P. CON + 5V FROM_NORMAL_A
HI-FI
Q4001, Q4002 AUDIO PB SW
Q4003 SW CTL+ CTLSYSCON/SERVO/ DECK
E-1
E-2
SYSTEM CONTROL/SERVO/DECK BLOCK DIAGRAM
TIMER SYSCON SERVO CONTROLLER IC IC1001 OEC0088A
C. SYNC POWER POWER_ON-L 81 POWER ON L Q1007 CENT SW X1001 10MHz TV/VCR_LED T-REC_LED REC_LED OPERATION KEY-B KEY-A DECK PCB REM_IN CP1003 1 VCC 2 BOT EOT SENSOR Q1006 P. CON + 5V 1 REEL SENSOR Q1001 CP1001 3 CYL PG 5 CYL FG 7 CYL DRIVE P. CON + 5V 4 3 4 3 87 REEL-T 88 REEL-S 39 DPG 38 DFG CP1002 3 I LIMIT 4 CTL 6 FG 7 CAP/M/F/R 26 DRUM PWM 65 CYL SPEED UP 21 CAP FULL 25 CAP PWM 66 CAP LIMIT 40 CFG 60 CAP FWD AFT S. CURVE CV OUT VCR-H (TV/VCR) FS/IIC CLK IIC DATA 11 45 84 98 99 6 CL AUDIO OUT 93 MUTE L 5 DA 2 1 2 REEL SENSOR Q1002 8 KEY-B 9 KEY-A 82 REM IN P. CON + 5V 3 BOT-H 12 EOT-H 89 POWER FAIL-H 18 CENT LED 73 OSC 2 72 OSC 1 77 TV/VCR LED 78 T-REC_LED 79 REC_LED 54 C. SYNC 4FSC
4 FSC IN 53 4 FSC OUT REC/EE/PB 52 1
POWER_FAIL P. CON + 5V
REC/EE/PB DUMMY_V. SYNC H. SW C. ROTARY TRICK_PB-H/EE-H AUDIO_MUTE-H H. AMP_SW V. REC_ST-H ENV. DET OSD_V CTL+ CTLDOC_XO_CTL INPUT_SEL COMP AUDIO_MUTE-H V. REC_ST-H Y/C/AUDIO/CCD/ HEAD AMP
DUMMY V. SYNC 27 H. SW C. ROTARY TRICK PB-H A. MUTE 24 28 85 59
H. AMP SW 29 V. REC ST-H ENV DET CV IN CTL-H(+) CTL-H(-) 56 14 43 31 32
BOT SENSOR Q101
DOC_XO_CTL 100 INPUT SEL COMP 20 30
ST SEL 10 HIFI H. SW 23
ST_SELECT HIFI_H. SW
IIC_CLK IIC_DATA AFT-S. CURVE VIDEO_OUT TV/VCR IIC_CLK IIC_DATA
EEP ROM IC IC1099 S-24C01BDP
HI-FI
MICRO MOTOR
CAPSTAN DD UNIT
TUNER
AUDUIO_OUT_MUTE_L TUNER_L 96 RESET 16 SYSTEM RESET IC IC1003 1 3 RE5VS31A IC1002 SW1001 TAB SW 92 LDM FWD-H 64 63 4 5 AT + 5V PG ADJ VR1001 AT+12.6V HIFI_ENV. DET HI-FI TAB SW 2 LDM REV-H HIFI ENV PG 4 1 8 7 5 CP1003 LDMLDM+ 3 4 BA6955AN LOADING MOTOR LOADING MOTOR DRIVER IC TUNER_L
76 SENS LED
Q1003
SW
2 MS_SEN B Q1004 3 4 3 4 1 2 1 MS_SEN A Q1005
7 MS SEN-A 6 MS SEN-B
AT + 5V (M-CON)
AT + 5V
M
E-3
E-4
TUNER BLOCK DIAGRAM
REAR OUT JACK J4201 2 Q4201 SYSCON/SERVO/ DECK VIDEO_OUT BUFFER 3 4
HI-FI FRONT JACK J4203 2 4 6 7
TUNER_V P. CON + 12V RF-SW SW6001 FRONT_A_IN_R RF UNIT TU6001 2 3 4 5 6 11 12 13 14 16 22 23 24 AUDIO_OUT_MUTE_L Q6001 SW TUNER_L AFT-S. CURVE TV/VCR IIC_CLK IIC_DATA Q4204 MUTE SW Q4203 MUTE SW Q4202 MUTE SW RF_CONV_A. OUT TUNER_A 2 FRONT_A_IN_L AUDIO_OUT_R AUDIO_OUT_L FRONT_V_IN
Y/C/AUDIO/CCD/ HEAD AMP
HI-FI
SYSCON/SERVO/ DECK
E-5
E-6
HI-FI BLOCK DIAGRAM
HI-FI AUDIO/HEAD AMP/DEM IC IC5501 AN3662FBP
HF1
22
AMP
AGC INPUT SW
10 9 NC 15 14 NC
FRONT_A_IN-R
FRONT_A_IN-L
HF2
24
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 P. CON + 12V 58 42 LOGIC 43 56 HIFI_ENV. DET HIFI_H. SW AUDIO_MUTE-H IIC_CLK IIC_DATA ST_SELECT SYSCON/SERVO/ DECK
E-7
E-8
OPERATION BLOCK DIAGRAM
CP601 CH UP POWER KEY-A KEY-B 4 3
CD651
CP651 4 3
KEY-A KEY-B
OS651 CH DOWN 1 STOP/EJECT 3 REC/OTR D666 FF/CUE PLAY REW/REV D664 REC_LED AT + 5V D665 T-REC_LED REM_IN SYSCON/SERVO/ DECK
TV/VCR_LED AT + 5V POWER
D663
P. CON + 5V
POWER BLOCK DIAGRAM
TRANSFORMER SWITCHING T501 13 5 2 4 9 10 12 11 IC501 KIA431 D505, D508, D523, D528 Q503 SW. Q502 CONTROL Q511 PHOTO COUPLER VOLTAGE CTL IC 1 2 Q513 P . ON SW +32V Q512 P. CON +12V SW Q509 P. CON +5V SW
P. CON + 12V
TUNER
P. CON + 5V
Q510 PHOTO COUPLER COIL, LINE FILTER L501
AT + 12.6V POWER_ON-L POWER_FAIL SYSCON/SERVO/ DECK
F501
AC IN
E-9
E-10
S105 S106
SOLDER SIDE
DECK
Q101
CP101
S104
S103
S101
S102
F501 FH501 CP651 R534 B502 R512 R527 FH502 D523
C509
R504
C512
D512 R511 D511 C514 D510 C519 R505 D508 C504 L501 D507 CP501 D506
Q503
C508
D528 D505
1.6A250V
C5
T501_1 Q502 B501 W008 IC501 CP1003 Q510 D515
R513
C518
D514 W010 W003 W011 W017 W020 W019 W027 W028 D1003 D1002 R1007 D1004 W026 CP1001 W827 W007
L504 W161 Q1004
C522
W005
L505
D504
Q511
C502 R514
05
R502
W023
5 00
C503
Q1
W024
C
0 P1
02
D524
C517
W001 C1035 R1054 W006 W013 W014 W015 R1041 R1046 W022 R1003 R1015 W029 W162 Q512 W059 W064 D1008 W053 W054 W050 W036 C4035 W045 W051 W052 W060 C1022 D1006 W048 W056 W821 W043 W044 W041 R4062 W046 W089 W105 W169 C4058 C4062 C4061 C4060 Q4009 C4059 C4017 Q4008 Q4004 D1001 C4057 C4038 W103 W107 R4078 W061 R4063 X1001 L1001 W057 W058 R1053 W037 W049 W047 W042 L4007 Q4005 C4010 C4043 R4027 C4022 Q4002 C4034 C4024 Q4006 C4071 W065 T4001 C4002 R503 W021 W025 W063 W018 R1021 C1001
R501 W004 Q1003 R520 W835
PRINTED CIRCUIT BOARDS
C520 R529 R1018 C1018 D519 OS651 Q509 R523
D513
SYSCON/OPERATION (INSERTED PARTS)
W035 C1029 W034 D1005 W039 W040 C1027
Q1
00
2
W012
W002
IC1002
W033
C4004 L4003 W062
D663
SOLDER SIDE
W068 D666 W072 W069 R660 W075 W077 W074 W100 W078 W099 W081 W067 W098 C1026 C1020 C1012 W090 W094 W091 W092 W093 L4008 W096 W097 C4045
W055
D665
W076
C4050
C4016 C4044 CP4001 C4001 C4037 C4033 X4001 W101 W109 W805 C4023 C4031 C4021 W108 W802 W106 W104
D664
W084
W083
L4002 W088 W102 C4070
W095
IC1099
W073 Q1001 W111 TP1001 W833 W118 W117 C1013
W085
R1013 R1010
W166
W079 D1009
IC1003
W167
W086
C4011
C4039 W135 R4016 L4005
Q4007
C4026
C4030
C5531
C4019
L4001
W137
C5534
W113
C5549 R4033 W136 W132 L5504 W124 W121 SW602_3 W126 W127 W128 W122 W123 C5523 W130 C5536 C5517 C5538 C5548 C5547
D5
50
W114 W115
1
C5502 R5519 W129
C5539 C5521 C5501 C5533
C5509 SW601_3 C5525 W125 W168 W134 C6003 SW607_3 SW603_3 W116 W133 W120 C5505 C5511 C5516
SW606_3
C5555 W145 C5512
C5552
CP4
003
C5529 C5513 TP5501 L5502 TP4001 Q1006 W156 SW604_3 CP601 TP1002 W155 C5510 W804 W817 C4204 W141 SW608_3 C4209 W158 W152 W143 W142 W149 W150 W159 L6003 R4207 R4201_1 Q4204 W810 Q4201 C5537
C5526
SW1001
L5501
J4201
W140
J4203
Q4203
SW605_3
C4203 TP4201 VR1001 R6010 L6002 C6010 W829 W834 W139 TU6001 W138 D4205 W144 R6004 SW6001 L6001 W164 C6008 W160 C4201
C4212
C5532
Q4001
W030
CP4002
F-1
F-2
F-3
C510 C501 C507 C511 R518 C515 R516 R506 R510 R1052 R1024 R1023 R657 Q513 C1030 R1051 R1050 R1055 R1009 C1017 R1030_1 C1006 C1036 R1039 C1007 R1025 C1033 R1048 51 C1015 R1045 R1042 R4057 C1011 31 IC1001 R1033 81 C1010 R659 R1008 R1037 R658 R1049 C1023 C1019 C1025 R1044 C1014 C1016 R1040 R1043 C1031 R1019 R1017 C1024 R1005 R1011 1 R1026 R4046 R4043 R4045 R4041 R1027 C1009 R1034 R1014 C1008 R1035 R4065 R1038 R1012 Q1007 C4036 R4060 R1036 C4056 R4055 C4054 C4052 C4053 R4051 31 IC4001 51 R4044 C4032 R4059 R4053 C4048 C4055 R4050 R4040 C4029 C4028 R4018 C5553 R1004 C6014 C5514 R605 R601 C5504 C5518 R607 R604 R603 R602 Q4202 C6004 C6013 Q6001 R4209 R1006 R4204 R4210 R4211 R4202 R6009 R6008 C6009 C6007 C6001 R4206 R6006 R6005 C5506 R5511 1 C5507 C5524 C5515 C5508 C5527 C1021 R1047 R4067 R4068 R4015 R4069
PRINTED CIRCUIT BOARDS SYSCON/OPERATION (CHIP MOUNTED PARTS)
R4070 R4047 C4047 R4049 R4048 C4049 C4041 1 R4029 C4067 R4017 R5520 R5510 R5503 81 R5517 C5530 49
R4010 C4005 C4006
R4001
C4074 R4011 R4002 Q4003 C4025 C4027 C4020 R4032 R4025 R4034 R4023 R4020 R4004 R4003 C4018
R4072
R4022 R4008 R4013 R4012 C4009
SOLDER SIDE
C4068 R4021 R4009
C4003 C4012 C4013
C5541 C5542 C5540 C5545 C5543 C5544
R5502 C5503
R5516 R5514 R5507 R5508 R4205 R4212_1
33 17 IC5501
C5546
F-4
A
B
C
D
E
F
G
H
Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM
8
(SYSCON PCB)
TO_NORMAL_A P.CON+5V SP/LP/EP-H INPUT_SEL
8
L4002 R4017 10K 100uH 0305 6.3V 47 KA
FROM POWER L4008 P.CON+5V 100uH 0305 6.3V 33 KA R4018 GND 470P CH R4043 C4067 R4041 2.2M R4016 15 1/4W BUFER Q4007 2SC1815Y 3.0 8.2K 50V 1 KA R4045 C4021 C4036 6.8K 3.3K 1K
C4070
7
7
R4046 C4037
2.4
1.5K 50V 1 KA
6.3V 47 KA
0.022 B
C4045
R4065 F R4059 BUFFER Q4008 5.2 2SC1815Y 3.7 3.0 4FSC FRONT_V_IN C4044 R4053 1.8K 2.2K 1K FROM/TO TUNER
R4029
FROM/TO HI-FI FSC
6.3V 22 KA
16V 10 KA
C4026
R4040
C4030
C4032 0.022 B
C4023 6.3V 22 KA
C4033
0.1
5.2
1K
1.8K
50V 1 KA
C4039
C4031 50V 1 KA
HF1 HF_COM W802 HF2 GND
TP4001
NC 3 C4028 1K 1/4W
R4044
FROM_NORMAL_A
2 3.579545MHz
50V 1
6
TO_NORMAL_A
C4019
KA
FSC
6
C4048 0.01 B
R4050 680K
0.047 F
C4050 0.01 F
W805
TUNER_V 0.022 F 2.6 1.9 BUFFER Q4009 0 2SA1015Y R4060 C4058 C4059 25V 4.7 KA KA C4061 50V1 KA R4063 3.3M TUNER_V C4052 0.1 F C4053 0.01 B R4057 C4062 1.8K 50V 1 KA FRONT_V_IN CTLCTL+ R4078 1 100 OSD_V DOC_XO_CTL INPUT_SEL H.AMP_SW COMP C4054 0.01 B C.SYNC ENV.DET H.SW 220K R4062 220K1/4W C4055 0 1.9 0 2.7 2.5
0.1 B
C4029
Y/C/AUDIO/CCD/HEAD AMP IC IC4001 LA71077BM-MPB 2.4 2.4 2.4 80 81 C4012 0 1.8 1.8 15P CH C4013 1.8 1.8 0 P.CON+5V L4001 6.3V 47 KA C4003 100uH 0305 C4001 5.1 1.8 0.1 F 1.8 1.8 1.8 C4011 0 1.0 0 0 R4009 2.2K R4012 R4072 18K 18K R4008 12K C4016 2.8 15P CH 79 78
NC NC NC 0 2.4 5.0 2.3 2.3 2.8 2.3 1.5 2.0 77 76 75 74 A-Vcc 73 72 71 70 69 KIL DET
R4033
0 68
H.A GND
CH4
82
FROM/TO CYL
5
84
CP4001 TOC-C09X-A1 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)
REC EP OUT
H L
Vref 2.3V ALC
H.AMP H SW
CH3
86
H.A GND H.A VCC
CH2
P
45
PB AMP
NC 0 1.4 4.0 2.3 2.2 3.0 4.1 3.4 4.9 3.4 5.0 5.0 2.5 5.0 3.7 2.3 0.1 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 ALWAYS C-VCC VDD 4Fsc CLOCK C-GND REG PULL SLD 5V VX01 320FH VCO TIMMING OUT OUT AUTO-BIAS DRIVER KIL P R BEFORE REC BGA CLAMP APC CCD KIL P IN PB REC AFTER APC AFC BGA R KIL B.D. P R VCA C.SYNC
R
X4001
VSS VSS 47 48 49 50
FROM/TO SYSCON/SERVO 4FSC DUMMY_V.SYNC C.SYNC SP/LP/EP-H TRICK_PB-H/EE-H V.REC_ST-H C.ROTARY AUDIO_MUTE-H REC/EE/PB OSD_V
83
5
85
46
3.0 6.3V 22 KA 3.2 2.8 2.8 4.9 2.8 3.5 C4060 50V 1
87
88
90
H NOMAL HA TEST CH1 L H.AMP SW
R
Y-LPF
P R
NC1
PB-Y
91
93
95
96
4 FROM_NORMAL_A 0.001 B C4068
2.7K
97
98
100 99
H.A R/P AUDIO MUTE RF SW IN C ROT
HA SW IN Y/C R/P AUDIO R/P
R4013 10K C4010 6.3V 47 KA
P.CON+5V 6.3V 100 KA C4071
1 5.2 470P CH 50V1 KA C4074 0 5.3 SW Q4003 DTA124EKA R4011 22K BIAS CTL 5.2 Q4005 2SA1318 5.2 0 L4003
2
3
4
5
6
7
8
9
10
11 0
12
13
14
15
16 0
17 0 4.9
18
19
Y-Vcc 20 21 22
23
24
25
Y-GND 26 27 28 50V1 KA
29
30
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 AUDIO PB SW Q4001 2SC3331 0 AUDIO PB SW Q4002 2SC3331 TO FULL ERASE HEAD CP4003 TMC-T02X-E1 0 CTL+ CTL560 V.REC_ST-H R4001
2.4 2.4 2.4 2.4 C4017
0 2.4 2.4 1.5 0.0022 B
390P CH C4043
C4034
R4051
33K
5.0 5.0 NC
0 0.8 0.8 0.8
0 1.6 5.0 1.0 0.2 2.0 3.4 2.8
0 2.1 1.0 4.8
31
2.4
EQ AMP
CTL AMP
32
5.1
PB/EE
REC: EP/LP PB:EP
REC AMP
P VHS
TEST
33
0
Vref PB /EE
PB PHASE-EQ
SQPB
R
34
25V4.7 KA 0.3
AUTO BIAS
CLAMP
Chara INS.
6DB
35
COMP
R4004
A.GND
MUTE
ALC-LEVEL
LINE AMP
PB FM-EQ
DOUBLE LIM
NL EMPHA
FBC
R VIDEO OUT
36
BUFFER Q4004 2SC1815Y
ENV DET COMP OUT R P
94
0
47K
DELAY
S-EQ FM-EQ
1/2
R-EQ WC TEST DC
SYNC SEP
P
37
0
R4021
REC FM-EQ
NOMAL FM
MOD
FM DEM
DETAIL ENH
R
P R
AGC TC2 V-AGC
38
4
ENV.DET
5.1
C4009 0.1 F
50V1 KA
REC AGC FILT
92
FM AGC
P
R
AFC
1 2 3
39
Sub CONV
3.58M BPF2
SUB LPF
V/I CONV
Y/C PB-C MIX
40
BALANCER
41
REC SP OUT
AGC + AMP
P
R
89
4.21M BPF
Main CONV
B-UP AMP
ACC AMP
P
SYNC DET
42
YNR/COMB
N.L. DEEN
VCP
43
GCA
ACC BGA DET
3.58M BPF1
CLAMP
44
L
C-LPF
2.5 NC C4057 6.3V 22 KA 1.5 1.0 3.0 4.3 4.4 NC 0 4.6 R4055 100K
4
C4056 0.1 F DUMMY_V.SYNC
3
10K C4027 820P CH R4022 6.8K R4068 47K
100uH
R4032 27K
0.1 F
R4048
47K
R4067
4
3
R4025 C4024 330K 25V 4.7 KA
R4069
47K
1.5K
R4070
0.01 B
R4010
C4005
3.3K
C4022
6.3V 47 KA C4006
V.REC_ST-H
H.AMP_SW
C.ROTARY
R4015
1
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
2.2
1
FE HEAD(HOT)
REC/EE/PB
P.CON+5V
R4027
2
FE HEAD(GND)
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
CAUTION: DIGITAL TRANSISTOR
PCB010 VMX181
TRICK_PB-H/EE-H
100V 0.022 TF
0.015 B
AUDIO_MUTE-H
C4002
C4004
DOC_XO_CTL
BIAS OSC Q4006 2SD734
H.SW
L4005
0
47uH 0305
0
180 1/4W 16V 10 KA
0
10K
0
C4018
5
0.0012 B
2
0.7 R4003
W821
1K
C4049
4.7K
10K
C4035
5
2
200P CH
R4023
8.2K
0.7 R4002
6
1
6.3V 100 KA
COIL,BIAS OSC T4001 1626007
C4041
R4020
L4007 C4047 100uH 18P CH R4049
C4038
RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL AUDIO SIGNAL(REC) AUDIO SIGNAL(PB) PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL TUNER VIDEO SIGNAL
50V 1 KA
C4025
R4034
R4047
820
18K
C4020 0.01 B
2
1
A
B
C
D
E
F
G
H
G-1
G-2
A
B
C
D
E
F
G
H
FROM/TO TUNER
8
AUDIO_OUT_MUTE_L
SYSTEM CONTROL/SERVO SCHEMATIC DIAGRAM
AFT-S.CURVE IIC_DATA FROM/TO POWER R1008 POWER_FAIL MODEVCC POWER_ON-L AT+5V[M-CON] R1010 33K 1/4W 10K POWER_FAIL-AC
8
VIDEO_OUT TUNER_L TV/VCR
(SYSCON PCB)
IIC_CLK
RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL
7
P.CON+5V AUDIO_MUTE-H AT+5V SENS_LED CYL_DRIVE TV/VCR_LED LDM.F T-REC_LED CAP_LIMIT REC_LED GND GND GND F/R (S/S) (CAP) (LDM) LOADING MOTOR DRIVER IC IC1002 BA6955AN CONTROL LOGIC STD POWER SAVE 11.9 1 0 2 LDM.F 0 3 0 4 LDM.R 0 5 0 6 0 7 11.9 LM+ 8 11 B B LDM.R AT+12.6_V V.REC_ST-H C.SYNC
7
4FSC
D1008
R1051
1SS133
10K
FROM/TO HI-FI V.REC_ST-H HIFI_ENV.DET HIFI_H.SW AUDIO_MUTE-H IIC_CLK IIC_DATA
C1033
15P CH C1007
15P CH
C1006
R1030_1
1M
0.1
6
0.022
C1036
C1019
82P CH
6
10 R1039 C1014 33P CH C1016 27P CH 1M
ST_SELECT
LM-
X1001 R1011 10MHz 22K
W827
18 1/4W R1053
1N4005E R1004 47K FROM/TO DECK POWER_ON-L REM_IN SP/LP/EP-H TV/VCR BOT LMLM+ SID1050CM 1N4005E REEL-T R1007 82K 1/4W REEL-S POWER_FAIL-AC 14 D1004 TRICK_PB-H/EE-H 0 5.0 0 5.0 5.0 0 NC 5.0 5.0 4.2 0 NC 4.9 5.0 5.0 0.3 NC 3.0 NC 5.0 0.7 NC 0.1 5.0 0 R1019 3.3K 3.3K
NC 5.0 3.8 3.8 3.8 0 80 79 78 77 76 POWER ON H SUB-RESET(TV/VCR LED) 81 T-REC LED SENS LED REC LED
15uH C1017 0.1 0 F C1027 25V4.7 KA C1023 0.1 B
R1015
D1002
R1025 R1040 1M NC NC NC NC NC NC NC 820 0 0 2.4 2.3 0 5.0 5.0 5.0 0 5.0 3.2 4.3 3.2 2.4 3.4 0 0 0 5.0 0 5.0 5.0 5.0 5.0 5.0 75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 CTL_MONITER LDM FWD-H LDM REV-H CAP FWD A.MUTE VSS C.SYNC GND X1 CYL SPEED UP D OSC OUT OSC 2 OSC 1 EE-H 4 FSC OUT CAP LIMIT V.REC ST-H P.OFF-L TEST 4 FSC IN 50 3.3
L1001
15K1/4W
FROM/TO Y/C/AUDIO/CCD/HEAD AMP 4FSC DUMMY_V.SYNC C.SYNC SP/LP/EP-H TRICK_PB-H/EE-H V.REC_ST-H VIDEO_OUT C.ROTARY AUDIO_MUTE-H REC/EE/PB OSD_V 25V 4.7 KA 0.0047 B C1031 B C1030 0.022 CTL7 R1055 CTL+ CAP_FG CYL_PG CYL_FG DOC_XO_CTL INPUT_SEL H.AMP_SW COMP ENV.DET H.SW VIDEO H.SW TP1002 NC 6 REM_IN
82
49
5
CP1003 (CP101) IMSA-9604S-04Z14 1 2 3 4 VCC BOT LDMLDM+
83
48
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
C1025 120P CH R1043 2.7K R1044 4.7K
R1049 820
5
84
AFC LPF 81 POWER ON L 82 REM IN 83 SP/LP/EP-H 84 VCR-H(TV/VCR) 50 D OSC IN 49 VSS(OS) 48 AFC OSC CHR BIAS CV OUT V.REF CV IN Vcc(OSD) TIMER SYSCON SERVO CONTROLLER IC IC1001 OEC0088A VCC(SV) CFG DPG 99 IIC DATA 100 DOC_XO_CTL 32 CTL-H(-) 31 CTL-H(+) DFG CTL AMP CTL BIAS CTL AMP(-) VDD (60K=TEST) DUMMY V.SYNC CTL GAIN SW VSS(SV) H.AMP SW C.ROTARY COMP
85
TRICK PB-H JUST CLOCK REEL-T REEL-S POWER FAIL-H VIDEO MUTE-H SERVICE TAB SW
86
87
44
45
46
47
88
D1001
43
C1022 6.3V 22 KA R1050 C1018 470K 6.3V 100 KA
C1029
89
TMPG06-12A
SW1001 SPVF130100
D1003
91
4
92
39
47K 1/4W AUDIO_OUT_MUTE_L
40
R1013
3
4
90
41
42
R1054 C1015 220P CH 9 R1042 220 C1020 6.3V 47 KA R1048 R1045 47K R1041 560 1/4W R1046 560 1/4W C1021 0.001 R1047 6.8K CTL+ CTLB 270K C1026 6.3V 22 KA R1052 1K 1K 1/4W 8
1K
2
1
R1012 270 CENT SW 0.1 Q1007 DTC124EKA CENT_LED 4.9 0
4
93
AUDIO OUT MUTE L FL_CS FL_S_CLK TUNER_L FL_SD_OUT
94
96
35
TUNER_L R1003 120 1/4W 12 REEL SENSOR Q1002 SG-260 2.4 1.2 1 R1009 1.2 REEL SENSOR Q1001 SG-260 2 1 0 2 47K IIC_DATA DOC_XO_CTL 13 R1017 REEL-S 47K R1005 4 4.9 3 REEL-T IIC_CLK
95
36
37
38
FROM/TO OPERATION
98
97
AFT S.CURVE
REC/EE/PB
3CH/4CH
DRUM PWM
FS/IIC CLK MS SEN-B MS SEN-A HIFI ENV ST SEL BOT-H KEY-B A VSS KEY-A
INPUT SEL
Hi Fi H.SW
CENT LED
ENV DET
CAP PWM
CAP FULL
100 99
EOT-H
RESET
A VDD
GND
H.SW
1 0 REC/EE/PB
DUMMY_V.SYNC
3
56K
AFT-S.CURVE
INPUT_SEL
H.AMP_SW
ST_SELECT
KEY-B
KEY-A
COMP
R1033
NC 5.2 FROM/TO MICRO MOTOR CP1001 IMSA-9604S-07Z14 7 6 5 4 3 2 1 CYL DRIVE CYL GND CYL FG CYL +B CYL PG GND CYL VCC 5V R1018 CYL_PG CYL_FG EOT SENSOR Q1006 PNA2604M010R
H.SW
R1035
EOT
SERVICE TP1001
ENV.DET
HIFI_H.SW
C.ROTARY
0
HIFI_ENV.DET
0
4.9
56K
4
3
2 3 0 5.1
6 7 8 4 5 9 0 5.0 5.0 5.0 5.0 5.0
PG
10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 0 0 0 0 0 2.6 5.0 5.0 0 5.0 5.0 5.0 4.8 0 0.1 4.3 0 4.7 5.0 5.0 0 NC
31
32
33
34
KEY-B KEY-A TV/VCR_LED T-REC_LED REC_LED
3
IIC_DATA
CENT_LED
2.2K
CYL_DRIVE R1038 10K CONTROL_IN
EOT MODEVCC CYL_DRIVE
BOT
0
5.6K
IIC_CLK
R1006
R1036
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
10K
10K
C1008
R1026
R1027
2
VR1001 10K
0.01
0.022
0.1
PG ADJ
C1009
C1011 0.18 B
C1010
B
F
B
NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE
2
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 CAUTION: DIGITAL TRANSISTOR
PCB010 VMX181
R1034
SYSTEM RESET IC IC1003 RE5VS31A SENS_LED C1001 16V 10 KA C1035 0.0039 X 5.6 1.4 1.4 2 3 5.0 2 MS_SEN A Q1005 RPI-352Q01R 0.6 3 IN CAP_LIMIT CONTROL_IN CAP_FG F/R 0.6 1 1.6 4 1 0.4 100 1/4W R1023 4 1.3 1 5.0 0 GND 2 5.0 OUT 3 5.0
4.7K
R1037
FROM/TO CAPSTAN DD UNIT CP1002 TMC-J08P-B1 1 2 3 GND MOTOR_GND I LIMIT CTL VCO(12V) FG CAP/M/F/R VCC(5V)
5.6K
C1024 6.3V 220 YK 0.1 F 5.0 8 VCC
C1013
R1014
A2
A1
6.3V 33 KA
5 6 7 8
R1021
R1024
C1012
33K
33K
MS_SEN B Q1004 RPI-352Q01R
4 0 0
3 0
2 0
A
B
C
D
E
F
A0
4
180K
1
EEP ROM IC S-24C01BDP IC1099
DA
CL
1.2 1K 1/4W SW Q1003 2SC1815Y
5.0 5
5.0 6
0 7 TEST
ARE
1SS133
D1009
VSS
1
1
G
H
G-3
G-4
A
B
C
D
E
F
G
H
TUNER SCHEMATIC DIAGRAM
8 8
(SYSCON PCB)
RF-SW SW6001 SSAB110100 CH4
4 5
CH3 3 2 1 NC REAR OUT JACK J4201 JPJ4311-011432 E HI-FI FRONT JACK J4203 LPR1251-0500
TU6001 TMDH2-A05A 6.3V 47 KA
7
22K C6008
25 26
7
MTZJ6.8B 1 3 4 470P B C4203 E D4205 7 NC 1 2 E 3 4 E 5 6
R6005
R6006 10K
A.IN CH MB
2 3 L6001 4 100uH 0305
RF_CONV_A.OUT
H R VIDEO OUT TP4201 NC R4202
2
H L
H V
H V
H L
H R
P.CON+5V TV/VCR
FROM/TO Y/C/AUDIO/CCD/HEAD AMP R4209 W810 75 75 C4212 FRONT_V_IN 16V 10 KA
CONTROL 5 R6004 V.IN 6 1K 1/4W 22P CH RF AGC 8 NC 9 CE 10 R6009 CLOCK 11 R6008 DATA 12 1K 6.3V 220 YK 0.01 B BM 13 C6009 L6002 C6010 22uH 0305 R6010 270 1/4W TU 32V 16 IF TP IF OUT 17 18 L6003 15uH C6014 0.001 B 1K NC NC C6007 27P CH C6001
6.3V 470 YK
C4201
6
TUNER_V
6
FSC FROM/TO HI-FI IIC_CLK IIC_DATA P.CON+5V C4209 16V 10 KA R4212_1 390 FSC +32V P.CON+12V R4201_1 470 1/4W R4204 10K R4206 390 MUTE SW Q4204 2SC1815Y 0 0 0 0 0 R4211 2.7K VIDEO_OUT R4207 2.7K 1/4W 0 MUTE SW Q4202 DTA124EKA 5.0 B AT+5V RF_CONV_A.OUT TUNER_A 5.0 AUDIO_OUT_MUTE_L W804 AUDIO_OUT-L AUDIO_OUT-R FRONT_A_IN-R FRONT_A_IN-L
5
PB 5V 14 FSC 15
5
C4204
BUFFER Q4201 2SA1015Y 3.3 TUNER_A W834 0 2.6 R4210 100
470P
R4205
10K
MUTE SW Q4203 2SC1815Y
0
4
A.OUT 21 SIF OUT 22 AFT 23 W829 V.OUT 24 C6004 B
27 28
4
NC
AFT-S.CURVE C6003 16V 10 KA TUNER_V
0.1 F
C6013
0 0 TUNER_L SW Q6001 DTC124EKA
3
0
0.01
3
AT+5V (TUNER) GND
AUDIO_OUT_MUTE_L
FROM POWER
P.CON+12V
P.CON+5V
+32V
AFT-S.CURVE
VIDEO_OUT
IIC_DATA
TUNER_L
IIC_CLK
TV/VCR
2
FROM/TO SYSCON/SERVO
2
CAUTION: DIGITAL TRANSISTOR
CAUTION: DIGITAL TRANSISTOR
NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK
1
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
PLAYBACK LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL RECORD LUMINANCE SIGNAL RECORD COLOR SIGNAL AUDIO SIGNAL(REC) AUDIO SIGNAL(PB) TUNER VIDEO SIGNAL
PCB010 VMX181
1
A
B
C
D
E
F
G
H
G-5
G-6
A
B
C
D
E
F
G
H
8
POWER SCHEMATIC DIAGRAM
(SYSCON PCB)
TO HI-FI P.CON+5V P.CON+12V GND
8
TO TUNER
7
R529 330 1/4W T501_1 8122006 33K 1/4W 13 MTZJ33B (TUNER) GND +32V
7
12.1 12.7
12.0 P.CON+12V SW Q512 2SD734 W835 P.ON SW Q513 12.7 DTC124EKA 0 0
P.CON+12V
D524
R520
1
12
P.CON+5V AT+5V TO Y/C/AUDIO/CCD/HEAD AMP R503 P.CON+5V 22K 1/4W GND
33K 1/2W
500V 0.01 E
R512
C512
2
11
D515 1SS24