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MVR4040A

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 ...................................................................................................................... TUNER ........................................................................................................................................................ HIFI ............................................................................................................................................................. OPERATION/POWER ................................................................................................................................. PRINTED CIRCUIT BOARDS SYSCON/OPERATION/DECK .................................................................................................................... SYSCON/OPERATION ............................................................................................................................... SCHEMATIC DIAGRAMS Y/C/AUDIO/CCD/HEAD AMP ...................................................................................................................... SYSTEM CONTROL/SERVO ...................................................................................................................... TUNER ........................................................................................................................................................ POWER ....................................................................................................................................................... OPERATION ................................................................................................................................................ HIFI ............................................................................................................................................................. 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 VHS Hi-Fi Audio System PAL-M PAL-N

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 G-5. Color System G-6. NTSC Playback(PAL60Hz) G-7. MESECAM M NTSC Yes Yes PAL No No SECAM or Monochrome

G-8. Cassette Tape VHS type video cassette tape Width 12.65mm (1/2 Inch) VHS-C type video cassette tape Width 12.65mm (1/2 Inch) G-9. Tape Speed NTSC or PAL-M SP 33.35 mm/sec LP 16.67 mm/sec SLP 11.12 mm/sec 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.Rewind/Fast Forward Time(Approx.) FF:1' 48" / Rew:1' 48" G-12.Search Speed SP LP SLP G-13.Slow Speed SP LP SLP G-14.Frame Advance SP LP SLP (with T-120 cassette) (with E-180 cassette) Times Times Times Times Times Times Times Times Times

3 and 5 7 and 9 9 and 15 1/5 ~ 1/30 1/5 ~ 1/30 1/5 ~ 1/30 1/10 1/10 1/10

G-15.Antenna Input Impedance VHF/UHF 75 ohm unbalanced

A 3 -1

GENERAL SPECIFICATIONS
G-16.Tuner and Receiving Channel Tuner: Contactless Electric Tuner Oscar(W/O HYPER) Oscar(W/ HYPER) France CATV Others Receiving Channel VHF (LOW) 2 ch ~ 6 ch (HIGH) 7 ch ~ 13 ch (CATV) A5 ch ~ B ch C ch~ W+11 ch W+12 ch~ W+58 ch UHF 14 ch ~ 69 ch Tuning System Frequency syn. Voltage syn. Others G-17.Preset Channel No Allocation -channels ch ~ ch ~ ch ~ MHz MHz MHz ~ 75 I USA No ohm ohm 230 --50 -1 Lines Kohm Kohm Kohm Kohm Kohm(0dB=0.775 Vrms)

ch ch ch MHz MHz MHz MHz MHz MHz

G-18.Intermediate Frequency Picture(FP) Sound (FS) FP-FS G-19.RF Converter Output Channel Level/Impedance Sound Selector G-20.Stereo/Dual TV Sound Yes( NICAM G-21.Tuner Sound Muting

45.75 41.25 4.50

3 or 4 ch. 66 dB / Yes( G GERMAN Yes

ohm K) JAPAN)

No No

G-22.Video Signal Input Level 1 Vp-p / 75 Output Level 1 Vp-p / 75 S/N Ratio 50 dB (Weighted) Horizontal Resolution at SP Mode G-23.Audio Signal Input Level Microphone Line RCA Line RCA ---8 --8 42 1.5 at SP at LP at SLP 4 2 1 1 dB / dB / dB / dB / dB /

Output Level

S/N Ratio at SP Mode Harmonic Distortion : Frequency Response :

dB (Weighted) % (1KHz) 120 120 120 Hz ~ Hz ~ Hz ~ 10 6 4 KHz KHz KHz

Mode Mode Mode

G-24.Heads Video FM Audio Audio / Control Erase G-25.Motor: Rotary Heads Rotary Heads Stationary Head ( Full Track Erase Mono Stereo(L,R) )

3 Motors Tape/Cassette Loading Cylinder (Direct Drive) Capstan (Direct Drive)

A 3 -2

GENERAL SPECIFICATIONS
G-26.Power Source 120 V AC 50Hz 12 2.5 -AC 60Hz W at AC 120 W at AC 120 kWh / Year V V 60 60 Hz(Approx.) Hz(Approx.) 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) : : 3.3 4.6 95 mm(H) Kg ( 8.8 Kg ( 10.2 94HB 94V2 94V0 lbs) lbs) DECABROM NON-DECA

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 C C ~ ~ 80

SAA DEMKO HOMOLO DENTORI PTT NZ DENTORI 40 60 %RH C C

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 Video Input(Front) Video Input(Rear) Video Output(Rear) Audio Input(Front) Audio Input(Rear) Audio Output(Rear) 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 Phono Jack (RCA 8.3) Phono Jack (RCA 8.3) Phono Jack (RCA 8.3) Phono Jack (RCA 8.3)x2 Phono Jack (RCA 8.3)x2 Phono Jack (RCA 8.3)x2 France Type BNC BNC BNC

A 3 -3

GENERAL SPECIFICATIONS
G-41.Display Fluorescent Indicator Yes No Clock/Counter,Channel,Timer Rec,OTR,Play,Rec,FF(Cue),Rew(Rev), Still,Pause,ATR,Eject,Stop WKL,Y.M.D,Start,End AFT Repeat VCR Memory Index VPS SP LP SLP AM On Screen Display Menu Clock Set( Calendar 12H 24H) Timer Rec Set Auto Repeat On Off Sap On Off CH Set TV/CATV Auto CH Memory Add/Delete Language No Noise Back Ground 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/Pause/T-Rec (Symbol) CH/AV Clock Memory Tape Counter Index Tracking Hi-Fi G-42.OSD Language Eng

PDC PM

Pin Code Tape Speed

Ger

Fre Fre

Spa Spa

Ita Ita

Por Por

Jan Jan

OSD Language Setting Eng Ger Not Applicable G-43.Carton Master Carton: Need Content: ---Material: ---Dimensions: Description of Origin Gift Box Material Need

No Need Set / ---Corrugated Carton ---- mm(W) ---- mm(D) Yes No

----

mm(H)

No Need Single/Brown Corrugated Carton ( with Photo Label) Single/White Corrugated Carton ( with Photo Label) Single Full Color Carton W/Photo Dimensions: 450 mm(W) 345 mm(D) 195 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: 1,870 Sets / 40' container

A 3 -4

GENERAL SPECIFICATIONS
G-44.Accessories Owner's Manual ( W/Guarantee Card) [English/Spanish] 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 Registration Card Car Cord Tape Rewinder(Buyer Supply) G-45.Other Features Auto Head Cleaning Index Search Auto Tracking 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(30 sec. x 6 times ) Rental Game Position Self Seeking 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

A 3 -5

GENERAL SPECIFICATIONS
G-47.Remote Control Unit :RC-CA Glow in Dark Remocon Yes Power Source: D.C 3 V Battery UM Control Key :Total 43 Key 0 1 2 3 4 5 6 7 8 9 10 11 12 ./.. Auto Tracking Jog/Shuttle Dial JOG Ring Shuttle One Touch Playback Input Select Slow

No 4x2

Ch Up Ch Down Cancel/Ch Skip Cancel Enter Speed Index Program Program/Video Plus Video Plus Set Up Set Down Set Right Set Left Call Menu TV/VCR Timer Rec Audio Dubbing Skip Search Tracking Up Tracking Down

Power Eject Play Play/Up Play/Slow/Up F.FWD F.FWD/Right Rew Rew/Left Pause/Still Pause Stop Stop/Down REC/OTR Clock/Counter Zero Return Counter Reset Audio Select TV Monitor Slow Speed Up Slow Speed Down

G-48.Hi-Fi Audio Recording Depth Multiplex Recording Rotary, Slant Azimuth Two Head System Helical Scan System G-49.Hi-Fi Audio Signal Output Level Line - 6 dB 1 Kohm(0dB=0.775Vrms) Dynamic Range : More than 90 dB Frequency Response : 20 Hz ~ 20 KHz(+-6dB) Wow And Flutter : Less than 0.01 % Wrms Channel Separation : More than 60 dB Harmonic Distortion : Less than 1 %

A 3 -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

3 2

3

3 3

Bottom Plate

Fig. 1-3 1-4: SYSCON PCB AND JACK PLATE (Refer to Fig. 1-4) Fig. 1-1 1. Remove the screw 1. 2. Remove the 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).

2

Operation PCB

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)

(B)

Jack Plate

(B)

(A)

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 0.5kgfcm

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 2-5: CASSETTE SIDE L/R (Refer to Fig. 2-5) 1. Remove the Locker Spring. 2. Unlock the 4 supports 1 and then remove the Cassette Side L/R. NOTE When you install the Cassette Side L/R, be sure to move the Locker L/R after installing.
1 1
Locker Spring

2

2 2 1
Main Chassis

Fig. 2-2

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

1

1

Tape Guide L Cassette Side R Locker L Cassette Side L

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 0.5kgfcm

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)

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
(2)

2

A/C Head

A/C Head Spring

1
A/C Head Base

Fig. 2-13-A

2
Cassette Opener

2
P5-3 Arm Ass'y Pinch Roller Block Spring Position Pinch Roller Arm Spring Pinch Roller Lever Ass'y

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 0.5kgfcm

Fig. 2-12-A

The FE Head is not installed on the Video Cassette Player.

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.
2
(3) AHC Ass'y Pinch Roller Cam E-Ring Main Cam

1
Middle Gear

2
Joint Gear P5 Cam

Fig. 2-17-A
Cylinder Unit Ass'y

2
(1)

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

2
(2)

Check the hole of Main Chassis can be seen.

P5 Cam

Screw Torque: 5 0.5kgfcm

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 0.5kgfcm

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 and washer 3. 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. Unlock the support 2 and remove the Loading Gear Holder. 3. Remove the Inclined S. 4. Remove the Inclined T. 5. Remove the 2 screws 3, then remove the Guide Roller and O-Ring. NOTE Do not touch the roller of Guide Roller.
Guide Roller Loading Gear Holder O-Ring

1
Main Loading Gear Main Rod

Tension Lever Loading Gear T Idler Arm Ass'y

LED Reflecter

2 3

Loading Gear Spring Loading Arm T Ass'y Loading Gear S

Clutch Actuator

Loading Gear Spring

3
Inclined S

2
Guide Roller O-Ring

Loading Arm S Ass'y

3
Inclined T

1

P4 Cover

Fig. 2-19-A 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 Screw Torque: 0.7 0.2kgfcm

Fig. 2-20

Main Loading Gear

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 FIP. 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".

While pressing the CH UP key on the set, press the FF key on the set for more than 2 seconds.

While pressing the CH UP button on the set, press the STOP button on the set for more than 2 seconds during PLAY. 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.

Adjust the PG SHIFTER automatically. Refer to the "ELECTRICAL ADJUSTMENT" (PG SHIFTER).

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

CONFIRMATION OF USING HOURS
PLAY/REC total hours can be checked on the FIP. Total hours are displayed in 16 system of notation. 1. Turn on the POWER. 2. While pressing the CH UP button on the set, press the FF button on the set for more than 2 seconds. 3. 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.) 4. 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.) 5. After the confirmation of using hours, turn off the power.

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. ADDRESS DATA INI 00 0A INI 01 00 INI 02 00 INI 03 64 INI 04 64 INI 05 4A INI 06 0A INI 07 0B INI 08 26 INI 09 8A INI 0A 45 INI 0B 0C INI 0C 08 INI 0D 0C INI 0E 0E INI 0F 8C INI 10 68 INI 11 5C INI 12 53

Table 1 1. Turn on the POWER. 2. While pressing the CH UP key on the set, press the FF key on the set for more than 2 seconds. 3. ADDRESS and DATA should appear as FIG 1.

ADDRESS

DATA

Fig. 1 4. 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. 5. Press ENTER to select DATA. When DATA is selected, it will "blink". 6. Again, step through the DATA using SET + or - until required DATA value has been selected. 7. Pressing ENTER will take you back to ADDRESS for further selection if necessary. 8. Repeat steps 4 to 7 until all data has been checked. 9. 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 (10~90gfcm) JG002F (60~600gfcm)

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 60~110gfcm during playback in SP mode. 3. Confirm that the left meter of the torque tape indicates 25~40gfcm 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 120~180gfcm. 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 60~100gfcm. (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 45~70gfcm.
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

0.250.05mm

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 TP4002 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. While pressing the CH UP button on the set, press the STOP button on the set for more than 2 seconds. If the indicator ATR disappear's, the adjustment is finished. (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
J4203 TP1001

T501

TU6001

TP4001 TP1002

TP4201 J4201

SYSCON PCB

D2-2

Y/C/AUDIO/CCD/HEAD AMP BLOCK DIAGRAM

X4001 3.579545MHz

Q4008 BUFFER Q4009 BUFFER

Y/C/A/CCD/H.AMP IC4001 LA71077AM-MPB

62
VX01

61

51
PULL TIMMING

53

49
OUT

47 4FSC
59 CLAMP 55
DETAL ENH

SP/LP/EP-H INPUT_SEL TRICK_PB-H/EE-H DOC_XO_CTL
SYSCON/ SERVO

DRIVER

CCD
FM MOD

85

L H

H.SW

REC FM-EQ

WC DC

NL EMPHA V/I CONV

30 19 CLAMP P P 28 R R
YNR/ COMB N.L. DEEM NC1 Y/C MIX VCA CLAMP

84 CP4001 1 EP/LP-CH2 (L) 2 EP/LP COM 3 EP/LP-CH1 (R) 4 SP-CH2 (L)
CYL

83
H H.AMP SW L

AGC AMP

KIL C-LPF

25

Y-LPF

82
88

P

R

GCA
R

B-UP AMP ACC AMP
R

Main CONV
P

3.58M BPF2

46 44

5 SP COM 6 SP-CH1 (R) 7 HF2 (L) 8 9 HF COM
HF1 (R)

89 90
H

FM AGC DELAY
H.SW L

P

3.58M BPF1 KIL B.D. PB AMP

T/C R/P AUDIO R/P HA SW IN 1/2 C ROT

16 17 15

REC/EE/PB

H.AMP_SW C.ROTARY H.SW AUDIO_MUTE-H V.REC_ST-H ENV.DET Q4004 BUFFER COMP DUMMY_V.SYNC OSD_V C.SYNC
SYSCON/ SERVO

91
HIFI HF1 HF_COM HF2

PB FM-EQ PB PHASE-EQ
DOUBLE LIM FM DEM SUB LPF
V-AGC

14 13 12 11 93

P

7 5

REC AMP

R

RF SW IN AUDIO FBC MUTE H.A R/P ENV DET
Chara INS.

CP4003
FE HEAD 1 FE HEAD (HOT) 2 FE HEAD (GND)

6

P

R

AUTO BIAS
4 PB.EE 99 EQ AMP

LINE AMP MUTE

CONP 94 OUT

ALC
6dB
SYNC SEP

31 35 34

3

2

1

100

96

98 97

78 76

42 40

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
T4001

Q4005 2
BIAS CTL

FRONT_V_IN TUNER_V

TUNER

5

TO_NORMAL_A P.CON+5V
FROM_NORMAL_A

HIFI

Q4001, Q4002
AUDIO PB SW

Q4003 SW

CTL+ CTL-

SYSCON/ SERVO

E-1

E-2

SYSTEM CONTROL/SERVO BLOCK DIAGRAM
TIMER SYSCON SERVO CONTROLLER IC1001 OEC0080A C.SYNC 54
POWER POWER_ON-L 81 POWER ON L 89 POWER FAIL-H
X1001 10MHz

C.SYNC
4FSC

4 FSC IN 53 4 FSC OUT SP/LP/EP-H REC/EE/PB
DUMMY V.SYNC

POWER_FAIL(AC)

52 83 1 27 SP/LP/EP-H REC/EE/PB
DUMMY_V.SYNC

73 OSC 2 72 OSC 1

H.SW 24
KEY-B OPERATION KEY-A REM_IN 8 9 KEY-B KEY-A

H.SW C.ROTARY TRICK_PB-H/EE-H AUDIO_MUTE-H
H.AMP_SW Y/C/AUDIO/ CCD/HEAD AMP

C.ROTARY
TRICK PB-H

28 85 59 29 56 14 43
31 32

82 REM IN

A.MUTE H.AMP SW

DECK BLK

CP1003 1 VCC 2 BOT

V.REC ST-H
P.CON+5V 3 BOT-H 12 EOT-H ENV DET

V.REC_ST-H
ENV.DET

BOT SENSOR Q101 EOT SENSOR Q1006 2
REEL SENS Q1001

CV IN CTL-H(+) CTL-H(-)
DOC_XO_CTL REEL SENS Q1002 4 3 4 3 87 REEL-T 88 REEL-S 39 DPG 38 DFG 26 DRUM PWM 65 CYL SPEED UP 21 CAP FULL 25 CAP PWM 66 CAP LIMIT 40 CFG 60 CAP FWD 67 SENS LED Q1003 SW. 2 MS_SEN B Q1004 3 4 3 4 7 MS SEN-A MS SEN-B INPUT SEL COMP

OSD_V CTL+ CTLDOC_XO_CTL
INPUT_SEL COMP AFT-S.CURVE VIDEO_OUT

P.CON+5V 1 2 1

95 20 30
11 45 57

MICRO MOTOR

CP1001 3 CYL PG 5 CYL FG 7 CYL DRIVE

P.CON+5V

AFT S.CURVE
CV OUT (TV/VCR)VCR-H

TV/VCR IIC_CLK
IIC_DATA 6 CL 5 DA TUNER

FS/IIC CLK
IIC DATA

98 99

CAPSTAN DD UNIT

CP1002 3 I LIMIT 4 CTL 6 FG 7 CAP.M F/R

EEPROM IC1099 M24C01-BN6
AUDUIO OUT MUTE L

AUDUIO OUT 62 MUTE L RESET 16

SYSTEM RESET
3

IC1003 RE5VS31A
2

D1006
1

AT+6V
BACK UP AT 5V BA6955AN LOADING MOTOR 3 4

IC1002 TAB SW 92 LDM FWD-H LDM REV-H HIFI ENV
V.REC ST-H PG 56 TAB SW

LOADING MOTOR DRIVER
2 4 1 8 7 5 CP1003 LDMLDM+ AT+12.6V AT+5V

1

2

1 MS_SEN A Q1005

6

10 ST SELECT 98 FS/IIC_CLK
IIC_ DATA 99

64 63 4 5
PG VR1001

M

AT+5V

HIFI A.MUTE-H H.SW 59 23

HIFI_ENV.DET

V.REC ST-H

HIFI H.SW
AUDIO.MUTE-H IIC_DATA

HIFI

IIC_CLK ST_SELECT

E-3

E-4

TUNER BLOCK DIAGRAM

REAR OUT JACK J4201

HIFI FRONT JACK J4203

SYSCON/ SERVO

Q4201 VIDEO_OUT BUFFER

2

3

4

2

4

6

7

TUNER_V P.CON+12V P.CON+5V TU_P.CON+5V +32V TU6001 2 3 4 5 6 11 12 13 14 16 22 23 24
AUDIO OUT MUTE_L TV/VCR IIC_CLK IIC_DATA

FRONT_V_IN RF-SW SW6001 2

Y/C/AUDIO/ CCD/HEAD AMP

FRONT_A_IN_R FRONT_A_IN_L

AUDIO_OUT_R AUDIO_OUT_L
Q4203 MUTE SW Q4204 MUTE SW Q4202 MUTE SW
RF_CONV_A.OUT TUNER_A

HIFI

SYSCON/SERVO

AFT-S.CURVE

E-5

E-6

HIFI BLOCK DIAGRAM

HIFI AUDIO/H.AMP/DEM IC5501 AN3662FBP

HF1

22

AMP

AGC INPUT SW

10 9 15 14

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

AUDIO_OUT_R AUDIO_OUT_L RF_CONV_A.OUT

TUNER

57
59

PNR FSC FROM_NORMAL_A TO_NORMAL_A
45 62 61

BPF

48

TUNER_A

VCO-FO ADJ LOGIC

FM LIM

30 29

V. REC_ST-H

DEM BLOCK P.CON+5V
18

28
27 36

HIFI_ENV. DET HIFI_H.SW
SYSCON/SERVO

25
51

AUDIO_MUTE-H IIC_CLK IIC_DATA ST_SELECT

P.CON+12V

58

42 LOGIC
43 56

E-7

E-8

OPERATION BLOCK DIAGRAM

CP601
KEY A

CP651 1 2 CH-UP CH-DOWN
SYSCON/ SERVO KEY-A KEY-B

POWER

KEY B

STOP/EJECT REC/OTR FF/CUE PLAY REW/REV 3 AT+5V OS651 1
REM_IN

POWER BLOCK DIAGRAM
T501 10 5 2 4 +32V

8 7 9 6 IC501 KIA431

Q512
P.CON 12V SW P.CON+12V

Q509 P.CON 5V SW

P.CON+5V

D505, D508 D523, D528 Q503 SW. Q502 CONTROL Q511 PHOTO COUPLER

VOLTAGE CTL. 1 2

Q513
P.ON SW

Q514 TU.P.CON 5V SW

TU_P.CON+5V

Q510 PHOTO COUPLER

AT+12.6V

POWER_ON-L
L501

POWER_FAIL(AC)

SYSCON/ SERVO

AC IN

E-9

E-10

PRINTED CIRCUIT BOARDS

SYSCON/OPERATION (INSERTED PARTS)
SOLDER SIDE

DECK
SOLDER SIDE
CP101 C657 OS651 SW659 W004 S101 S105 S106

V651 W032 W031

TP1001

SW660 D524 L504 R501 R520

CP651_1

TU6001 C6003 W136 W148

C4212 W146 W133

W127

J4203

C660

S104 S102 S103

R662

D517 C520 Q514 R519

Q101

D501 SW604_4 W125 R604

W124

D4205 W126 W134 R6003 L6002 C6010 L6001 W143 R6004 C6008 R4206 R4202 R6006 TP4201

SW1001 SW608

R1004

C656

D651

C514 L505 R508 C523 W003 C519 C518 W831 C502

C506

W150 W103 W102

Q1003 C503 C517 W002 W001 C522

R663

R529

Q509 D1005 D1006 R1009 W062 X1001 W069

W066 W070 W063

D502 D512

R523 D513 R1021 Q512 R1018 D519 W036 W030

W820

R1005 R1027 R1026

R1013

W064

W105 CP601_1 SW603_4 SW606_4 W104 SW607 Q1006 W135 W113 W114

SW605

W068 W065

W067

D514

R1008 R1010 W079

D503

W013

C1013 R1014 D1007 Q1001 C1012

W037

R1030

D515 W012 R503 Q1004 W011 W009 W008 W007 D510 R534 W010 T501

IC1099 W078 W077 IC1003 W072 C1026 R1028 W089 C1020 W093 W092 W034

W828

Q1

00

5

Q1

L1001

D1008

00 2

W076 W074

W075

C1027

W035 W073

W006 W005 R1003 R1015

C1018

R513

W071

C1022

C510

C1029 W033

D507 R511

Q503 R512 B502

R1053

W052

D511 W049

W054

W053

W088

W086

W083

W084 W081

D1001

R504

W087

C509 C512 R514

W016 W017

W015

W085

W091 W090

W051

W050

W047

W048

W043

W082 W040 W038 W039

W045 W046 W044

Q502 Q511

W110

C4045

C508 R505 W014 W023

W112

W042

L4002 W095

R4207

W138 Q4203 R4201 SW6001 C4203

W810

W137 W132 W144 W147 TP4001 TP1002 TP5501 L5502 W141 W804 W817 Q4204 C5510 W145 W119 L5501

W111

W080

W108 C5505

W109

Q4009

L4008 C4050

C4033

W107

C4039

C4037

R4016

R4033

W120

C4058

R4062 R4063 W058 W041

R1041 R1046 W021 C1035 R1054 R1052 W057

W022

D528 D505

D508

L4005

R4065

C4070

Q4008 C4060 C4062

IC501 Q510 D1002 W020 R1022

C5

05
D506

C4030

D5501 W118 Q4007 W116

X4001

D523

C4059

R527

C4031

C4061

W815

C5521

L5504 R5519

C4044 W805

R4078

L501

C4057

W056

W018 W055 W019

W115 C5516 C5509 C5501 C5502 C5555 C5511 C5531 W123 C5534 C5538 C5523 C4026 C4023

C
W149 C4034 C4035 C4071 Q4006 W061 W026 W060 T4001 C4004 IC1002

0 P1

02

R1002

CP4 003

W821

W094 C4001

L4007

C5552 C5512

C4021 W101 C4019 L4001

W802

C1001

FH502

C4038

C4043

W028 W029

C4201

C4209 J4201

C504

D1004

F501

W027

R4212 Q4201

Q4005 C4011 C5536 C5517 W100 W098 C5549 W826 CP4001

D1003

C4024

1.6A250V

R502

C5513 C5529

C4204

FH501

C4022

C4010

C4017

C4016

L4003

C5525 C5539

W097 W099 W096

W025

R4027

W059 Q4001 C4002 B503 CP501 CP1001

C5526 C5533 C5537 C5532

C5548

Q4004

C5547

Q4002

CP4002

CP1003

RISK OF FIRE-REPLACE AS MARKED.

F-1

F-2

IC 65 1
12 1

SOLDER SIDE

C4068 R4021 R4009

R4059 R4053

C4048 C4055 R4050

C1008

C658

C654 C4036

R1019 R1017 C1024

PRINTED CIRCUIT BOARDS SYSCON/OPERATION (CHIP MOUNTED PARTS)

C5506 C5507 C5514 C5508 C5504

C5515

C5518

R605

R5514 R5502 R5507 R5508 C5503 R5503 R4205 R607 R603 R1006 C1004 R602

R4204

R4210 R4211 R6007 R6009 C6009 R6008 R6001 R6002 C6005 C6004 C6013 Q6001 R4209 Q6002

C6007 C6001

01 55 IC

Q4202

R1037

01 10 IC

F-3
C501 C507 C511 C1003 R506 R518 R510 C515 R516 C525 C1002 R1007 R1023 R1024 Q513 R1051 C1030 R1055 C1017 R1050 R657 C1006 C1036 C1019 C1014 C1016 R1040 R1043 C1031 R4060 51 R1048 C4052 C4053 C1015 R1042 R1045 31 81 R4057 R4051 R1049 C1023 C1025 R1044 C1033 R1011 R1039 C1007 R1025 C1021 R1047 R4067 R4068 R4069 R4015 R4047 C4047 R4049 R4010 C4005 C4006 R4001 R4055 R4048 C4049 C4041 R4011 C4074 R4002 Q4003 R4003 R4020 31 C4018 R4004 C4025 C4027 C4020 R4032 R4025 R4034 R4023 C663 C662 23 1 34 C1009 R601 R4022 51 C4073 1 R1012 R1035 R1033 R1036 R1038 C1011 C1010 R4072

IC 40 01
Q1007 R4046 R4054

R4008 R4013 R4012

C4014 C4015 R4044 C4032 C4029 C4028 R4018 R4040 R4043 R4041 R4045 C4003 C4012 C4013

C4009

R4029 C4067 R4017

R5520 R5510

81 C5540 R5517 C5530 33

C5541 C5542 C5545 C5543 C5544

C5546 R1034 C4064

49

17

1 C5524 C5527 R5516 R6005

F-4

A

B

C

D

E

F

G

H

Y/C/AUDIO/CCD/HEAD AMP SCHEMATIC DIAGRAM
8
TO_NORMAL_A P.CON+5V

(SYSCON PCB)
SP/LP/EP-H INPUT_SEL

8

L4002 R4017 10K 100uH 0305 6.3V 47 KA

FROM POWER

7
P.CON+5V 470P CH GND

C4070

L4008 100uH0305

7
KA

C4045

C4023 6.3V 22 KA 6.3V 33 KA

R4018

C4067

6.8K

GND

R4016 15

R4046 C4037

8.2K 50V 1 KA R4045

50V 1 KA C4044 0.1 F

2.4

1.5K 50V 1 KA

R4029 2.2M

BUFER Q4007 2SC1815Y 3.0

6.3V 47

R4043

C4036

1.8K

W826

0.022 B

C4021

R4054 1K R4053 1.8K BUFFER Q4008 5.2 2SC1815Y 3.7 3.0 R4065 2.2K R4059 1K

C4064 0.001 B

FSC

6.3V 22 KA

C4031 50V 1 KA 16V 10 KA

FROM/TO HIFI/DEMODUTATOR 50V 1 KA FSC TO_NORMAL_A FROM_NORMAL_A C4019

5.2 C4032 0.022 B C4033

R4040

1K

1.8K

C4026

C4030

FROM/TO TUNER

C4039

6

HF1 HF_COM W802 W805 HF2 GND

TP4001

NC 3 C4028 1K

R4044

4FSC

FRONT_V_IN

2 3.579545MHz C4048 0.01 B R4050 680K C4050 0.01 F 0.022 F C4073 C4055 100P CH TUNER_V

6

0.047 F

0.1 B

C4029

Y/C/A/CCD/H.AMP IC4001 2.4 2.4 2.4 LA71077AM-MPB 80 81 C4012 0 1.8 1.8 22P CH C4013 1.8 1.8 0 P.CON+5V L4001 6.3V 47 KA C4003 100uH 0305 C4001 33P CH C4014 5.1 1.8 0.1 F 1.8 1.8 1.8 C4015 ENV.DET 33P CH 5.1 BUFFER Q4004 2SC1815Y COMP 4 FROM_NORMAL_A R4072 18K 0.001 B C4068 R4008 12K 0 0 R4021 47K R4004 2.7K R4009 2.7K R4012 18K C4016 C4009 0.1 F C4011 50V1 KA 0 1.0 0 0 2.8 22P CH 79 78

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

NC

68

H.A GND
CH4

82

FROM/TO CYL CP4001 TOC-C09X-A1

84

47

REC EP OUT

H L

Vref 2.3V ALC
H.AMP H SW

85

46

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)

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 48 49 50

0 1.9 0 2.7 2.5 1.9

2.6 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+ DOC_XO_CTL INPUT_SEL 1 R4078 100 C.SYNC OSD_V H.AMP_SW COMP ENV.DET H.SW 220K R4062 220K

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

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

REC AGC FILT ENV DET COMP OUT A.GND MUTE
ALC-LEVEL

92

93

94

4

R LINE AMP

P

DELAY PB FM-EQ PB PHASE-EQ REC AMP CTL AMP 6 7 8 9 10

95

96

97

98

P VHS

TEST

100 99

10K P.CON+5V 5.2 V.REC_ST-H R4001 CTL+ CTL560 0 5.3 SW Q4003 DTA124EKA 6.3V 100 KA 470P CH FROM/TO HEAD AUDIO CONTROL CP4002 52044-0645 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 0 0.7 R4002 10K 6 5 4 T4001 1626007 R4010 C4005 3.3K 1 2 3 C4071

C4010 6.3V 47 KA

1 50V1 KA C4074 R4011 22K BIAS CTL 5.2 Q4005 2SA1318 5.2 0 L4003

2

3

4

5

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

2.4 2.4 2.4 2.4 C4017

0 2.4 2.4 1.5 0.0022 B

390P CH C4043

C4034

50V 1 KA

C4025

3

R4051

27K

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 NC R4047 5.6K

0 2.1 1.0 4.8

31

2.4

H.A R/P AUDIO MUTE RF SW IN C ROT

HA SW IN Y/C R/P AUDIO R/P

R4013

EQ AMP

32

5.1

PB/EE

REC: EP/LP PB:EP

33

0

Vref PB /EE

SQPB

R

34

25V4.7 KA 0.3

AUTO BIAS

CLAMP

Chara INS.

6DB

35

DOUBLE LIM

NL EMPHA

FBC

R VIDEO OUT

36

S-EQ FM-EQ

1/2

37

REC FM-EQ

NOMAL FM

MOD

FM DEM

DETAIL ENH

R

P R P

R-EQ WC TEST DC

SYNC SEP

AGC TC2 V-AGC

38

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 W815 0 4.6 R4055 10K

4

DUMMY_V.SYNC

3

R4034

10K C4027 820P CH R4022 6.8K R4068 47K

C4041

R4020

820

L4007 C4047 6.3V 100 KA 100uH 18P CH R4049 R4048 1.5K C4049 4.7K

100uH

27K

0.1 F

47K

R4067

R4025 C4024 330K 25V 4.7 KA

R4069

47K

6.3V 47 KA C4006

V.REC_ST-H

H.AMP_SW

C.ROTARY

R4015

2.2

1

FE HEAD(HOT)

REC/EE/PB

P.CON+5V

R4027

2

FE HEAD(GND)

TRICK_PB-H/EE-H

100V 0.022 TF

0.015 B

AUDIO_MUTE-H

C4002

C4004

DOC_XO_CTL

BIAS OSC Q4006 2SD734

180

H.SW

47uH 0305

CP4003 TMC-T02X-E1

L4005

0

C4022

0

16V 10 KA

2

TO FE HEAD

0

10K

0

C4018

5

0.0012 B

0.01 B

0.7 R4003

C4020 0.01 B

W821

200P CH

R4023

8.2K

R4032

C4035

C4038

2

1

NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE

NOTE: THE DC VOLTAGE AT EACH PART WAS
MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK

CAUTION: DIGITAL TRANSISTOR

RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL AUDIO SIGNAL(REC) AUDIO SIGNAL(PB) PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL TUNER VIDEO SIGNAL
F G H

PCB010 VM9170

1

A

B

C

D

E

G-1

G-2

A

B

C

D

E

F

G

H

8

MEASURED WITH THE DIGITAL TESTER DURING PLAYBACK AFT-S.CURVE FROM/TO TUNER IIC_DATA

AUDIO_OUT_MUTE_L

VIDEO_OUT

ATTENTION: LES PIECES REPAREES PAR UN ETANT DANGEREUSES AN POINT DE VUE SECURITE N'UTILISER QUE CELLS DECRITES DANS LA NOMENCLATURE DES PIECES

CAUTION: SINCE THESE PARTS MARKED BY CRITICAL FOR SAFETY,USE ONES DESCRIBED IN PARTS LIST ONLY

ARE

NOTE: THE DC VOLTAGE AT EACH PART WAS

SYSTEM CONTROL/SERVO SCHEMATIC DIAGRAM
(SYSCON PCB)
TUNER_L TV/VCR

8

IIC_CLK

FROM/TO POWER R1008 POWER_FAIL MODEVCC POWER_ON-L AT+5V[M-CON] R1010 33K 10K POWER_FAIL-AC

CAUTION: DIGITAL TRANSISTOR

7

P.CON+5V AT+5V AUDIO_MUTE-H SENS_LED GND GND GND F/R (S/S) (CAP) (LDM) 4FSC AT+12.6_V CYL_DRIVE LDM.F CAP_LIMIT LDM.R V.REC_ST-H C.SYNC

RECORD COLOR SIGNAL RECORD LUMINANCE SIGNAL PLAYBACK COLOR SIGNAL PLAYBACK LUMINANCE SIGNAL CYLINDER APC SIGNAL CYLINDER AFC SIGNAL CAPSTAN AFC SIGNAL
7

R1051

RB721Q

D1008

10K

82P CH

W828

C1019

LOADING MOTOR DRIVER IC1002 BA6955AN CONTROL LOGIC STD 0.022 B POWER SAVE 11.9 1 0 2.7 1W 2 LDM.F 0 3 0 4 LDM.R 0 5 0 6 0 7 11.9 LM+ 8 11

FROM/TO HIFI V.REC_ST-H HIFI_ENV.DET HIFI_H.SW AUDIO_MUTE-H IIC_CLK IIC_DATA

C1033

C1006

R1030

C1036

1M

6

15P CH C1007

15P CH

0.1 B

6

10 C1014 33P SL R1039 C1016 27P SL 1M

ST_SELECT

LM-

X1001 10MHz R1025 R1011 22K

R1002

R1015

1N4005E R1004 81 FROM/TO DECK 47K C1002 C1003 0.001 B POWER_ON-L REM_IN SP/LP/EP-H TV/VCR BOT LMLM+ SID1050CM 1N4005E D1004 R1007 AUDIO_OUT_MUTE_L REEL-T 82K REEL-S POWER_FAIL-AC SERVICE TP1001 NC 14 TRICK_PB-H/EE-H 0 5.0 0 5.0 5.0 5.0 5.0 5.0 4.2 0 NC 4.9 5.0 0 CENT SW 0.1 Q1007 DTC124EKA CENT_LED 4.9 0 FL_CS FL_S_CLK TUNER_L R1003 Q1002 REEL SENS GP1S566 120 Q1001 REEL SENS GP1S566 1.2 1 1.2 1 0 2 2 12 47K R1009 IIC_DATA DOC_XO_CTL 13 R1017 R1019 3.3K 3.3K REEL-S 47K R1005 4 0 4.9 3 REEL-T FL_SD_OUT IIC_CLK NC 0.3 3.0 5.0 0.7 0.1 5.0 0

NC NC NC NC 0 3.8 3.8 3.8 0 80 79 78 77 76 SUB-RESET(TV/VCR LED) T-REC LED SENS LED REC LED

1M NC NC NC NC R1040 NC NC NC 0 0 0 5.0 0 5.0 5.0 5.0 5.0 5.0 0 0 2.4 2.3 0 5.0 5.0 5.0 0 5.0 3.2 4.3 3.2 2.4 3.4 820 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

L1001 15uH C1017 3.3 0.1 F 0 2.8 2.7 3.3 3.5 1.3 3.5 5.2 5.2 5.0 4.5 4.5 2.6 2.6 2.6 2.6 0 2.6 2.6 R1045 47K R1041 560 R1046 560 C1021 0.001 R1047 6.8K CTL+ CTLB R1042 220 C1020 6.3V 47 KA R1048 270K C1015 220P CH 9 C1026 6.3V 22 KA C1022 6.3V 22 KA R1050 C1018 470K C1030 6.3V 100 KA C1029 C1025 120P CH R1043 R1044 2.7K 4.7K R1049 820 C1027 25V4.7 KA C1023 0.1 B

15K

D1002

18 1/4W R1053

FROM/TO Y/C/A/CCD/H.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 CTL7 R1055 CTL+ CAP_FG CYL_PG CYL_FG 8 DOC_XO_CTL INPUT_SEL H.AMP_SW COMP ENV.DET H.SW VIDEO H.SW TP1002 NC 6 FROM/TO OPERATION REM_IN FL_CS FL_SD_OUT FL_S_CLK KEY-B KEY-A 0.022

82

83

5

48

CP1003(CP101) 52045-0445 1 2 3 4 VCC BOT LDMLDM+

0.1

F

49

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 IC1001 OEC0082A 99 IIC DATA 32 CTL-H(-) 31 CTL-H(+) VCC(SV) CFG DPG 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

86

AUDIO OUT MUTE L REEL-T REEL-S POWER FAIL-H

87

88

D1001

89

TMPG06-12A

90

1 4 SPVF130100

D1003

SW1001

91

SERVICE TAB SW

92

4

39

47K

40

R1013

3

41

42

43

44

45

46

47

R1054 R1052 1K 1K

1K

2

R1012 270

4

93

94

FL_CS FL_S_CLK TUNER_L FL_SD_OUT

100 DOC_XO_CTL

95

96

97

98

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

2.4

GND

H.SW

1 0 REC/EE/PB

R1022 10K

56K

HIFI_ENV.DET

AFT-S.CURVE

R1028

10K

INPUT_SEL

ST_SELECT

ENV.DET

HIFI_H.SW

H.AMP_SW

C.ROTARY

0

4.9

KEY-B

KEY-A

56K

4

3

DUMMY_V.SYNC

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 2.6 5.0 5.0 0 5.0 5.0 5.0 4.8 0 0 0 0.1 4.3 5.0 4.7 5.0 5.0 0 0 0 NC COMP

31

32

33

34

35

36

37

38

3

R1033

0.001 B

5.2

IIC_DATA

CENT_LED

C1004

2.2K

CYL_DRIVE R1038 10K CONTROL_IN

EOT MODEVCC CYL_DRIVE CYL_FG CYL_PG

R1026 10K

R1027 10K

CP1001 52045-0745 7 6 5 4 3 2 1 CYL DRIVE CYL GND CYL FG CYL +B CYL PG GND CYL VCC 5V FROM/TO CAPSTAN DD UNIT CP1002 TMC-J08P-B1 GND 1 2 3 MOTOR GND I LIMIT CTL VCO(12V) FG CAP.M F/R VCC(5V) CAP_FG F/R CAP_LIMIT CONTROL_IN 0.6 R1018 1K 1.2 SW Q1003 2SC1815Y

BOT

FROM/TO CYL

0

5.6K

0.01 B

C1008

2

0.1

0.022 B

C1009

C1011 0.18 B

C1010

F

IIC_CLK

R1006

EOT SENSOR Q1006 PNA2604M010R

H.SW

R1035

EOT

R1036

2

SENS_LED C1001 16V 10 KA C1035 0.0039 X

5.6 1.4 1.4 2 3 5.0

MS_SEN A Q1005 GP1S94L 0.6 2 3 5.0

SYSTEM RESET IC1003 RE5VS31A

R1034 4.7K 1SS133 R1037 5.6K 5.0 5 DA D1007 6.3V 100 YK C1013 5.0 6 CL 0

C1024 0.1 F 5.0 8 VCC

NOTE: THIS SCHEMATIC DIAGRAM IS THE LATEST AT THE TIME OF PRINTING AND SUBJECT TO CHANGE WITHOUT NOTICE

EEPROM IC1099 M24C01-BN6

7 TEST

PCB010 VM9170

1

A2

A1

5 6 7 8

100 R1023

R1021

R1024

MS_SEN B Q1004 GP1S94L

6.3V 33 KA

R1014

180K

5.0 56K 56K

0

5.0 C1012

4 0 0

3 0

2 0

A

B

C

D

E

F

A0

1

VSS

4

1.6

4

1 0.4

4 1.3

IN 1

GND 2

OUT 3

1

1

G

H

G-3

G-4

A

B

C

D

E

F

G

H

TUNER SCHEMATIC DIAGRAM
8

(SYSCON PCB)

8

RF-SW SW6001 SSAB110100 CH4
4 5

CH3 3 2 1 NC REAR OUT JACK J4201 JPJ4311-011432 HIFI FRONT JACK J4203 LPR1251-0500

TU6001 TMDH2-020A 6.3V 47 KA

7
22K C6008
25 26

7
E MTZJ6.8B 1 3 4 C4203 470P B 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

FROM/TO Y/C/A/CCD/H.AMP R4209 W810 68 75 C4212 FRONT_V_IN 16V 10 KA

P.CON+5V TV/VCR

CONTROL 5 R6004 V.IN 6 1K 22P CH RF AGC 8 NC NC C6007 CE 10 27P CH CLOCK 11 R6008 DATA 12 1K BM 13 47uH 0305 0.01 B C6009 C6010 L6002 1K R6009 C6001

6.3V 470 YK

NC 9

C4201

6

TUNER_V

6

FROM/TO HIFI IIC_CLK FRONT_A_IN-R IIC_DATA C4209 TU_P.CON+5V 16V 10 KA P.CON+12V R4201 6801/4W +32V 10K R4204 10K R6003 820 R4206 390 470P B MUTE SW Q4204 2SC1815Y MUTE SW Q4203 2SC1815Y 0 0 0 0 0 0 R4211 2.7K VIDEO_OUT R4207 2.7K 0 MUTE SW Q4202 DTA124EKA 5.0 AT+5V RF_CONV_A.OUT TUNER_A 5.0 AUDIO_OUT_MUTE_L R4212 AUDIO_OUT-R 390 W804 AUDIO_OUT-L FRONT_A_IN-L

5

6.3V 220 YK

PB 5V 14 NC 15 TU 32V 16 NC

5

R6001

IF OUT

18

3.0 B 1.6 1.0 0.0068 R6002 10K R6007

C6005

AMP Q6002 2SC2412K C6013 330 0.1 F

BUFFER Q4201 2SA1015Y 3.3 2.6

R4210 100

0

4
A.OUT 21 SIF OUT 22 AFT 23 NC

R4205

C4204

22K

IF TP

17

4

TUNER_A

AFT-S.CURVE C6003 TUNER_V

V.OUT 24 C6004
27 28

16V 10 KA

0

0.1 0

F

3

SW Q6001 DTC124EKA 0

TUNER_L

3

FROM/TO SYSCON/SERVO

AT+5V (TUNER) GND

TU_P.CON+5V

FROM POWER

AFT-S.CURVE

VIDEO_OUT

P.CON+12V

P.CON+5V

IIC_DATA

TUNER_L

+32V

IIC_CLK

TV/VCR

2

AUDIO_OUT_MUTE_L

2

CAUTION: DIGITAL TRANSISTOR

PC