Toshiba MV20FK3C Service Manual

MV20FK3C

Televisión y Videograbadora

Especificaciones generales Instrucciones de desensamble Clave para abreviaturas Lista de modos de servicio Revisiones preventivas e intervalos de servicio Nota para el reemplazo del IC de memoria Jigs de servicio y herramientas Preparación para el servicio Ajustes mecánicos Ajustes eléctricos Diagramas a bloques Placas de circuitos impresos Diagrama esquemático Formas de onda Vistas explotadas mecánicas Vistas explotadas del chasis Lista de partes de reemplazo mecánicas Lista de partes de reemplazo del chasis Lista de partes de reemplazo eléctricas

FILE NO. 140-200019

SERVICE MANUAL

COLOR TELEVISION/ VIDEO CASSETTE RECORDER

MV20FK3C

SERVICING NOTICES ON CHECKING

As for the places which need special attentions, they are indicated with the labels or seals on the cabinet, chassis and parts. Make sure to keep the indications and notices in the operation manual.

2. AVOID AN ELECTRIC SHOCK

There is a high voltage part inside. Avoid an electric shock while the electric current is flowing.

3. USE THE DESIGNATED PARTS

The parts in this equipment have the specific characters of incombustibility and withstand voltage for safety. Therefore, the part which is replaced should be used the part which has the same character. Especially as to the important parts for safety which is indicated in the circuit diagram or the table of parts as a mark, the designated parts must be used.

4. PUT PARTS AND WIRES IN THE ORIGINAL POSITION AFTER ASSEMBLING OR WIRING

There are parts which use the insulation material such as a tube or tape for safety, or which are assembled in the condition that these do not contact with the printed board. The inside wiring is designed not to get closer to the pyrogenic parts and high voltage parts. Therefore, put these parts in the original positions.

5. TAKE CARE TO DEAL WITH THE CATHODE-RAY TUBE

In the condition that an explosion-proof cathoderay tube is set in this equipment, safety is secured against implosion. However, when removing it or serving from backward, it is dangerous to give a shock. Take enough care to deal with it.

6. AVOID AN X-RAY1. KEEP THE NOTICES

Safety is secured against an X-ray by considering about the cathode-ray tube and the high voltage peripheral circuit, etc. Therefore, when repairing the high voltage peripheral circuit, use the designated parts and make sure not modify the circuit. Repairing except indicates causes rising of high voltage, and it emits an X-ray from the cathoderay tube.

PERFORM A SAFETY CHECK AFTER

7. SERVICING

Confirm that the screws, parts and wiring which were removed in order to service are put in the original positions, or whether there are the portions which are deteriorated around the serviced places serviced or not. Check the insulation between the antenna terminal or external metal and the AC cord plug blades. And be sure the safety of that.

(INSULATION CHECK PROCEDURE)

Unplug the plug from the AC outlet.

Remove the antenna terminal on TV and turn on the TV.

Insulation resistance between the cord plug terminals and the eternal exposure metal [Note 2] should be more than 1M ohm by using the 500V insulation resistance meter [Note 1].

If the insulation resistance is less than 1M ohm, the inspection repair should be required.

[Note 1]

If you have not the 500V insulation resistance meter, use a Tester.

[Note 2]

External exposure metal: Antenna terminal

Earphone jack

HOW TO ORDER PARTS

Please include the following informations when you order parts. (Particularly the VERSION LETTER.)

1. MODEL NUMBER and VERSION LETTER The MODEL NUMBER can be found on the back of each product and the VERSION LETTER can be

found at the end of the SERIAL NUMBER.

2. PART NO. and DESCRIPTION You can find it in your SERVICE MANUAL.

GENERAL SPECIFICATIONS

G-1.Ou tline of the Product

20 inch( 508.0 Color CRT 90 degree deflection 2 -Speed 1/2" Video Cassette Recorder

G-2.VCR Format

VHS Standar d

G-3.Video Recording System :Rotary,slant azimuth two head helical scan system

Luminance Compo nent :FM recordin g

Chrominance Component :Low frequency converted direct recording G-4.Broadcasting System US System M G-5.Color System NTSC PAL SECAM or Monochrome signal

mmV):Measured diagonally

VHS Recorder/Player VHS-C Player

NTSC PAL SECAM PAL-M PAL-N VHS Hi-F i Audio System

G-6.NTSC Playback(PA L 60Hz) G-7.MESECAM 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.Ta pe Speed

NTSC or P AL-M PAL or SECAM

SP 33.35 mm/sec SP 23.39 mm/sec LP 16.67 mm/sec LP 11.69 mm/sec SLP(EP) 11.12 mm/sec

G-10.Recording/Playback Time

NTSC or PAL-M

at SP Mode Max. 210 min. (wit h T-210 cassette) at LP Mode Max. 420 min. (with T-210 cassette) at SLP(EP) Mode Max. 630 min. (w ith T-210 cassette)

PAL or SECAM

at SP Mode Max. 300 min. (wit h E-300 cassette) at LP Mode Max. 600 min. (with E-300 cassette)

G-11.Deck

OVD-5 OVD-6 OVD-6S

G-12.Rewind/Fast Forward Time(Approx.)

FF:1'48" / Rew:1'48"

Yes No Not Appl icable Yes No Not Appl icable

(with T-120 cassette) (with E-180 cassette)

G-13.Search Spee d

SP 3 and 5 Times LP Times SLP(EP) 9 and 15 Times

G-14.S low Speed

SP 1/10 Times LP Times SLP(EP) 1/10 Times

G-15.Frame Advance

SP 1/10 Times LP Times SLP(EP) 1/10 Times

G-16.Antenna Input Impedance

VHF/UHF 75 ohm unbalance d

GENERAL SPECIFICATIONS

G-17.Tuner and Receiving channel

Tuner : Contactless Electric tuner

Oscar(W/O HYPER) Oscar(W/ HYPER) France CATV) Others

channel coverag e

2 ~ 69 , 4A

Tuning System

Frequency syn. Voltage syn. Others G-18.Preset Channel: -- channels G-19.I ntermediate Frequency

Picture(FP) 45.75 MHz Sound (FS) 41.25 MHz MHz MHz FP-FS 4.50 MHz MHz MHz

G-20. Stereo/Dual TV Sound

Yes( NICAM GERMAN USA JAPAN JAPAN BS) No

G-21.V ideo Signal

Input Level 1 Vp-p / 75 Output Level 1 Vp-p / 75 ohm S/N Ratio 50 dB (Weighted) Horizontal Resolution at SP Mode 220 Lines

G-22.A udio Signal

Input Level

Line - dB / - RCA - 8 dB / 50 Kohm

Output Level

Line - dB / -

RCA - 8 dB / 1 Kohm (0dB=0.775 V rms) S/N Ratio at SP Mode 38 dB

Harmonic Distortion : 1.5 % (1KHz) Frequency Response : at SP Mode 100 Hz ~ 10 KHz

at LP Mode Hz ~ KHz at SLP(EP) Mode 100 Hz ~ 4 KHz

Hi-Fi M odel’s Spes NONE

Depth Multiplex Recording Rotary, Slant Azimuth Two Head

System Helical Scan System

Frequency Response : 20 Hz ~ 20

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-23.Heads

Video

FM Audio 2 Rotary Heads Track Width(SP/SLP : 1ch 27 µm, 2ch 27 µm)

Audio / Control 1 Stationary Head ( Mono Stereo(L,R) ) Erase 1 Full Track Erase

4 Rotary Heads Track Width

(SP : 1ch 49 µm, 2ch 58 µm, SLP : 1ch 21 µm, 2ch 21 µm)

1Tuner System 2Tuner System BS Tuner

, A-5 ~ A-1 , A ~ I , J ~ W , W+1 ~ W+84

MHz MHz

ohm

Kohm

KHz(+-6dB)

G-24.Motor: 3 Motors

Tape/Cassette Loading Cylinder ( Di re ct Dri ve) Capstan (Direct Drive)

G-25.Power Source

120 V

EXT DC Jack - V

AC 50Hz AC 60Hz

GENERAL SPECIFICATIONS

G-26.Power Consumption: 115 W at AC 120 V 60 Hz(Approx.)

- W at DC - V

(at TV and VCR ON) Stand by: 5 W at AC 120 Per Year: --- kWh / Year

G-27.Dimensions(Approx.) 502 mm(W) 481.5 mm(D) 513 mm(H) G-28.Weight(Approx.) Net : 26.5 Kg ( 58.5 lbs)

Gross: 28.5 Kg ( 62.9 lbs)

G-29.Cabinet Material

Cabinet Front:

Cabinet Rear:

Jack Panel:

PS 94HB DECABROM ABS 94V2 NON-DECA

94V0

PS 94HB DECABROM ABS 94V2 NON-DECA

94V0

PS 94HB DECABROM ABS 94V2 NON-DECA

94V0

V 60 Hz(Approx.)

G-30.Cassette Loading System: G-31.Tape Counter: Linear Time Tape Counter G-32.Protector: G-33.Regulation

Safety

UL CSA SAA SI CE SEV BS NF NEMKO FEMKO DEMKO IEC65 SEMKO NZ HOMOLO SABS CNS SISIR NOM AS3159 DENTORI UNE GOST NONE

Radiation

FCC DOC FTZ PTT CE SEV SABA SI NF NZ HOMOLO UNE CNS CISPR13 DENTORI AS/NZS NONE

X-Radiation

DHHS HWC PTB DENTORI NONE

G-34.Temperature

Operation 5 ºC ~ 40

Storage -20 ºC ~ 60 ºC G-35.Operating Humidity Less than 80 %RH G-36.Clockand Ti m er

Calender : 1990/1/1 ~ 2081/12/31 (Initial

Built-in 1 Month 8 Events Programmable Timer

One Touch Recording : Max Time 5 Hours

Sleep Timer Yes Max 120 Min.( 10 Min. Step) No

On/Off Timer Yes 1 Programs No

Wake Up Timer Yes Programs No

Auto Shut Off 15 Minutes

Power Fuse Dew Sensor

Front Cassette Loading System Top Loading System

ºC

2000/1/1 2005/1/1)

G-37.Timer back up Time

More than 1/12 Minutes (at Power Off Mode) G-38.Terminals

VHF/UHF Ante n na Inpu t Din Type F-Type France Type Front Video In put<AV2, RCA ø8.3>

Front Audio Input<AV2, RCA ø8.3> x2 Rear Video Input<AV1, RCA ø8.3>

Rear Audio Inpu t<AV1, RCA ø8.3> x2 Rear Video Outp ut<RCA ø8.3>

Rear Audio Output<RCA ø8.3> x2 Ear Phon e Jack(ø3.5) Head Phone Jack(Stereo & Mono, ø3.5)

DC Jack 12V(Center +) AC Inlet Ext Speaker Diversity Ear Phone 21 Pin (x )

G-39.Indicator

Indicator

G-40.O n S creen Display

Menu Timer Rec Set

GENERAL SPECIFICATIONS

Power Rec/OTR T-Rec On Timer CS NONE

(Red) (Red

Ch Set Up TV/C ATV Auto Ch Memory

)(Red) ( )( )

Add/Delete Guide Ch Set

G-CODE(o r SHOWVIEW or PLUSCODE)No. Entry Clock/Date CH/AV V-chip/Password Tape Counter Tape Speed Caption/Text 1/2 Sleep Time Tape In Contro l Le v el ( Vol,Bri gh t,Cont,C ol or , Tint,Shar pness,B a ss ,T eb l e,Balance) Contro l L ev e l ( Vo l,Brigh t,Cont,C ol or , S ha rpness) Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause/Eject(Symble Mark) Auto Tracking/Manual Tracking Index Repeat Muting Stereo/SAP/HiFi

G-41.O S D Language

Eng Ger Fre Spa Ita Por Jan

OSD Language Setting

Eng Ger Fre Spa Ita Por Jan Not Applicable

TV Set Up V-Chip Set On/Off Timer

Picture Audio Sap On/Off

Auto Repeat On/Off System Set Up Clock Set( Calendar 12H 24H)

Language Auto Clo ck On/Off Standard Time Daylig ht S av ing Time

G-42.Speaker

Position

Size 3 inches

Imp. 8 ohm x 2 pcs

Output Max 1.5 + 1.5 W

G-43.EX T Speaker

Yes W Imp ohm No

G-44.Carton

Master Carton:

Content: ---- Set

Material: ---- / ---- Corrugated Carton

Dimensions: ---- mm(W) ---- mm(D) ---- mm(H)

Description of Origin Yes No

Gift Box

Material

Dimensions: 586 mm(W) 569

Design: As Per BUYER 's

Description of Origin: Yes No

Drop Test Natural Dropping At 1 Corner / 3 Edges / 6 Surfaces

Container Stuffing: 320 Sets / 40' container

GENERAL SPECIFICATIONS

Front Side Bottom

10% 1.5 + 1.5 W (Typical)

Need No Need

Double/Brown Corrugated Carton ( with Photo Label ) Double/W hi te Co r ru gat ed Carton ( with Photo Label) Double Full Color Carton W/Photo

mm(D) 590 mm(H)

Height

25cm 31cm 46cm 62cm 80cm

G-45.Accessories

Channel Film Dew/AH C Caution She e t Owner's Manual ( W/Guarantee Card) [Engl is h/French] Remote Control Unit AC Plug Adaptor Rod Ant enn a ( One Pole Two Pole/ F-Type DIN T ype France Type ) Loop Antenna( F-Type DIN Type France Type) U/V Mixer Quick Set -up Sheet DC Car Cord (Center+) Battery (UM- 4 x 2 ) Guarantee Ca rd AC Cord Warning Sheet AV Cord (2Pin-1Pin) Circuit Diagram Re gis tration Card Antenna Change Plug PTB Sheet Service Facility List 300 ohm to 75 ohm Antenna Adaptor Important Sa feguard Euro Warranty Information Sheet ESP Card

G-46.Other Features

Auto Head Cleaning Auto Tracking Auto C lock VIDEO PLUS+(SHOWVIEW,G-CODE) Choke Coil HQ (VHS Standard High Quality) Auto Po wer On, Auto Pla y, Auto Rewin d, Auto Eject Forward / Reverse Picture Search SQPB One Touch Playback CATV Auto CH Memory CM Skip(30sec x 6Times) Closed Caption Comb Filter TV Auto S hutt off Function Energy Star End Call TV Monitor V-chip( USA CANADA) SAP

G-47.Switch

Front

Rear

G-48.Magnetic Fiel d

G-49.Remote Control Unit:

Power Channel Up Volume Up Play Channel Down Volume Down Pause/Still F.FWD/Cue Rew/Rev System Select Eject/Stop Rec/OTR One Touch Playback Main Power SW Input Selec t Color On/Off (SECAM only) Degauss Main Power SW AC/DC

BV : +0.45G BV : +0.35G BV : +0.25G

BH : 0. 18G BH : 0.30G BH : 0.30G

BV : -0.15G BV : -0.25G BV : -0.50G

BH : 0.15G BH : 0.15G BH : 0.30G

Unit: RC-DQ

Format : NEC

Custom Code : 40-BF/44-BB h

Glow in Dark Remocon Yes No

Power Source: D.C 3 V Battery UM - 4 x 2

0 Power Tracking Auto 1 Rec/OTR(2Key) Tracking Up/Set + 2 Play Tracki ng Down/Set 3 F.Fwd Menu 4 Rew Enter 5 Pause/Still Cancel 6 Stop Muting 7 Eject Volume Up 8 Timer Rec(2Key) Volume Down 9 TV/Caption/Text Ch Up Sleep Timer Ch Down Quick View Zero Return Input Select

Call CM Skip(Skip Search) Audio Sel ec t(for Hi-Fi) Slow(for 4Head) Program( /VCR PLUS+) VCR PLUS+

GENERAL SPECIFICATIONS

Total 42 Keys

Counter Reset Speed

DISASSEMBLY INSTRUCTIONS

1. REMOVAL OF MECHANICAL PARTS AND P.C. BOARDS

1-1: BACK CABINET (Refer to Fig. 1-1)

Remove the 4 screws 1.

Remove the 2 screws 2.

Remove the 2 screws 3 which are used for holding the Back Cabinet.

Remove the AC cord from the AC cord hook 4.

Remove the Back Cabinet in the direction of arrow.

Front Cabinet

1-2: CRT PCB (Refer to Fig. 1-2) CAUTION: BEFORE REMOVING THE ANODE CAP,

DISCHARGE ELECTRICITY BECAUSE IT CONTAINS HIGH VOLTAGE. BEFORE ATTEMPTING TO REMOVE OR REPAIR ANY PCB, UNPLUG THE POWER CORD FROM THE AC SOURCE.

Remove the Anode Cap. (Refer to REMOVAL OF ANODE CAP)

Disconnect the following connectors: (CP801, CP802 and CP805).

Remove the CRT PCB in the direction of arrow.

Back Cabinet

Fig. 1-1

1-3: TV/VCR BLOCK (Refer to Fig. 1-3)

Remove the 2 screws 1.

Disconnect the following connectors: (CP401, CP502, CP4201 and CP4202).

Unlock the support 2.

Remove the TV/VCR Block in the direction of arrow.

Front Cabinet

TV/VCR Block

UP TO RELEASE

1-4: MAIN PCB (Refer to Fig. 1-4)

Remove the screw 1.

Remove the Main PCB Holder.

Remove the 2 screws 2.

Remove the 3 screws 3.

Disconnect the following connectors: (CP810 and CP820).

Remove the Main PCB in the direction of arrow.

Main PCB

Main PCB Holder

Fig. 1-3

Front Cabinet

CRT PCB

VCR Block

Fig. 1-4

Fig. 1-2

DISASSEMBLY INSTRUCTIONS

1-5: DECK SHIELD PLATE (Refer to Fig. 1-5)

Remove the 2 screws 1.

Remove the screw 2.

Remove the Deck Shield Plate in the direction of arrow.

Deck Shield Plate

VCR Block

1-6: DECK CHASSIS (Refer to Fig. 1-6)

Remove the 3 screws 1.

Disconnect the following connectors: (CP1004, CP1005, CP1006, CP4001, CP4002 and CP4003).

Remove the Deck Chassis in the direction of arrow.

Fig. 1-5

1-7: JACK PLATE AND SYSCON PCB (Refer to Fig. 1-7)

Remove the screw 1.

Remove the Syscon PCB in the direction of arrow (A).

Remove the 2 screws 2.

Remove the nut 3.

Remove the washer 4.

Unlock the 2 supports 5.

Remove the Jack Plate in the direction of arrow (B).

Jack Plate

Syscon PCB

(B)

(A)

Deck Holder

Fig. 1-7

Syscon PCB

Deck Chassis

Fig. 1-6

DISASSEMBLY INSTRUCTIONS

2. REMOVAL OF DECK PARTS

2-1: TOP BRACKET (Refer to Fig. 2-1)

Remove the 2 screws 1.

Slide the 2 supports 2 and remove the Top Bracket.

NOTE

When you install the Top Bracket, install the screw (1) first, then install the screw (2).

(2)

Top Bracket

Main Chassis

• Screw Torque: 5 ± 0.5kgf•cm

Top Bracket

Main Chassis

2-2: FLAP LEVER/TAPE GUIDE R (Refer to Fig. 2-2)

Move the Cassette Holder Ass'y to the back side.

Remove the Polyslider Washer 1.

Remove the Flap Lever.

Unlock the 3 supports 2 and remove the Tape Guide R.

(1)

Fig. 2-1

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)

Tape Guide L

REC Lever

• 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)

Move the Cassette Holder Ass'y to the front side.

1. Push the Locker R to remove the Cassette Side R.

2. Remove the Cassette Side L.

Main Chassis

Cassette Side R

Locker R

Tape Guide R

Flap Lever

Main Chassis

Fig. 2-2

2-3: TAPE GUIDE L (Refer to Fig. 2-3-A)

Move the Cassette Holder Ass'y to the back side.

1. Unlock the 2 supports 1 and remove the Tape Guide L.

2. Remove the REC Lever. (Recorder only)

REC Lever

Tape Guide L

Cassette Side L

Main Chassis

Fig. 2-4

2-5: CASSETTE SIDE L/R (Refer to Fig. 2-5)

Unlock the 4 supports 1 and then remove the Cassette

1. Side L/R.

NOTE

When you install the Cassette Side R, be sure to move the Locker R after installing.

Locker R

Cassette Side R

Cassette Side L

Fig. 2-5

Main Chassis

• The REC Lever is not installed on the Video Cassette Player.

Fig. 2-3-A

DISASSEMBLY INSTRUCTIONS

2-6: LINK ASS'Y (Refer to Fig. 2-6)

Set the Link Ass'y to the Eject position.

1. Remove the (A) side of the Link Ass'y first, then remove

2. the (B) side.

Link Ass'y

(A)

Main Chassis

(B)

Link Ass'y

Main Chassis

Fig. 2-6

2-7: LOADING MOTOR ASS'Y (Refer to Fig. 2-7)

Remove the Link Lever.

1. Remove the Dumper Spring.

2. Remove the 2 screws 1.

3. Unlock the support 2 and remove the Loading Motor

4. Ass'y. Unlock the 2 supports 3 and remove the Deck PCB

5. (BOT).

Dumper Spring

Loading Motor Ass'y

2-9: TENSION ASS'Y (Refer to Fig. 2-9-A)

Move the Inclined S Ass'y to the back side.

1. Remove the Tension Spring.

2. Unlock the support 1 and remove the Tension Arm

3. Ass'y. Remove the Tension Adjust.

4. Unlock the 2 supports 2 and remove the Tension Band

5. Ass'y. Unlock the support 3 and remove the Tension Holder.

6. Remove the SS Brake Spring.

7. Remove the SS Arm Brake.

Tension Adjust

Tension Spring

SS Brake Spring

SS Arm Brake

Tension Band Ass'y

Tension Arm Ass'y

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)

Main Chassis

• Screw Torque: 5 ± 0.5kgf•cm

Deck PCB (BOT)

2-8: SENSOR COVER L3 (Refer to Fig. 2-8)

Unlock the support 1 and remove the Sensor Cover L3.1.

Main Chassis

Sensor Cover L3

Link Lever

Fig. 2-7

Fig. 2-8

Adjust the direction of the Marker to inside.

2-10: T BRAKE ASS'Y (Refer to Fig. 2-10)

Remove the T Brake Spring.

Remove the T Brake Ass'y.

T Brake Ass'y

T Brake Spring

Fig. 2-9-B

Fig. 2-10

DISASSEMBLY INSTRUCTIONS

2-11: S REEL/T REEL (Refer to Fig. 2-11)

Remove the S Reel and T Reel.

1. Remove the 2 Polyslider Washers 1.

NOTE

Take care not to damage the gears of the S Reel and T

1. Reel. The Polyslider Washer may be remained on the back of

2. the reel. Take care not to damage the shaft.

3. Do not touch the section "A" of S Reel and T Reel. (Use

4. gloves.) (Refer to Fig. 2-11) Do not adhere the stains on it. When you install the reel, clean the shaft and oil it. (If

5. you do not oil, noise may be heard in FF/REW mode.) After installing the reel, adjust the height of the reel.

(Refer to MECHANICAL ADJUSTMENT)

S Reel

(A)

T Reel

(A)

NOTE

Do not touch the Pinch Roller. (Use gloves.)

1. When you install the Pinch Roller Block, install as shown

2. 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)

Remove the screw 1.

1. Remove the A/C Head Base.

2. Remove the 3 screws 2.

3. Remove the A/C Head and A/C Head Spring.

NOTE

Do not touch the A/C Head. (Use gloves.)

1. When you install the A/C Head Spring, install as shown

2. in Fig. 2-13-B. (Refer to Fig. 2-13-B) When you install the A/C Head, tighten the screw (1)

3. first, then tighten the screw (2), finally tighten the screw (3).

2-12: PINCH ROLLER BLOCK/P5-3 ARM ASS'Y

(Refer to Fig. 2-12-A)

Remove the P5 Spring.

1. Remove the screw 1.

2. Unlock the 2 supports 2 and remove the Cassette

3. Opener. Remove the Pinch Roller Block, Pinch Roller Arm

4. Spring, Pinch Roller Lever Ass'y and P5-3 Arm Ass'y.

P5 Spring

P5-3 Arm Ass'y

Cassette Opener

Pinch Roller Block

Pinch Roller Arm Spring

Pinch Roller Lever Ass'y

Main Chassis

Fig. 2-11

(3)

(1)

(2)

• Screw Torque: 4 ± 0.5kgf•cm (Screw 1)

Spring Position

A/C Head

A/C Head Spring

A/C Head Base

Fig. 2-13-A

Fig. 2-13-B

2-14: FE HEAD (RECORDER ONLY) (Refer to Fig. 2-14)

Remove the screw 1.

1. Remove the FE Head.

• Screw Torque: 5 ± 0.5kgf•cm

Fig. 2-12-A

FE Head

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

• Screw Torque: 4 ± 0.5kgf•cm

Fig. 2-14

DISASSEMBLY INSTRUCTIONS

2-15: AHC ASS'Y/CYLINDER UNIT ASS'Y

(Refer to Fig. 2-15)

Unlock the support 1 and remove the AHC Ass'y.

1. Remove the 3 screws 2.

2. 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.

AHC Ass'y

Cylinder Unit Ass'y

(2)

• Screw Torque: 3 ± 0.5kgf•cm

(1)

(3)

Fig. 2-15

2-16: CAPSTAN DD UNIT (Refer to Fig. 2-16)

Remove the Capstan Belt.

1. Remove the 3 screws 1.

2. Remove the Capstan DD Unit.

Middle Gear

E-Ring

Main Cam

Pinch Roller Cam

Joint Gear

P5 Cam

Fig. 2-17-A

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.

Marker

Main Cam

P5 Cam

Capstan Belt

Capstan DD Unit

• Screw Torque: 5 ± 0.5kgf•cm

Fig. 2-16

2-17: MIDDLE GEAR/MAIN CAM (Refer to Fig. 2-17-A)

Remove the Polyslider Washer 1, then remove the

1. Middle Gear. Remove the E-Ring, then remove the Main Cam, P5

2. Cam and Pinch Roller Cam. Remove the Polyslider Washer 2, then remove the

3. Joint Gear.

Fig. 2-17-B

2-18: CLUTCH ASS'Y (Refer to Fig. 2-18)

Remove the Polyslider Washer 1.

1. Remove the Clutch Ass'y, Ring Spring and Coupling

2. Gear. Unlock the 2 supports 2 and remove the Clutch Lever.

Clutch Ass'y

Ring Spring

Coupling Gear

Clutch Lever

Fig. 2-18

DISASSEMBLY INSTRUCTIONS

2-19: LOADING GEAR S/T ASS'Y (Refer to Fig. 2-19-A)

Remove the E-Ring 1 and remove the Main Loading

1. Gear. Remove the Capstan Brake Spring.

2. Slide the Main Rod and remove the Capstan Brake

3. Ass'y. Remove the Main Rod, Tension Lever, Clutch Actuator,

4. Idler Arm Ass'y. Remove the screw 2.

5. Remove the LED Reflecter.

6. Remove the Loading Arm S Ass'y and Loading Arm T

7. Ass'y.

Remove the Loading Gear S and Loading Gear T.

Remove the Loading Gear Spring.

Capstan Brake Spring

Main Rod

Idler Arm Ass'y

LED Reflecter

Clutch Actuator

Capstan Brake Ass'y

Main Loading Gear

Tension Lever

Loading Gear T

Loading Gear Spring

Loading Arm T Ass'y

Loading Gear S

Loading Gear Spring

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)

Unlock the support 1 and remove the P4 Cover.

Remove the screw 2.

Unlock the support 3 and remove the Loading Gear

Holder. Remove the Inclined S.

Remove the Inclined T.

Remove the 2 screws 4, then remove the Guide Roller.

NOTE

Do not touch the roller of Guide Roller.

Loading Gear Holder

Guide Roller

Loading Arm S Ass'y

• Screw Torque: 5 ± 0.5kgf•cm

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

Main Loading Gear

Marker

Loading Arm T Ass'y

Loading Arm S Ass'y

Inclined S

• Screw Torque: 5 ± 0.2kgf•cm (Screw 2)

• Screw Torque: 0.7 ± 0.2kgf•cm (Screw 4)

Guide Roller

Inclined T

P4 Cover

Fig. 2-20

Fig. 2-19-B

DISASSEMBLY INSTRUCTIONS

3. REMOVAL OF ANODE CAP

Read the following NOTED items before starting work.

After turning the power off there might still be a potential

voltage that is very dangerous. When removing the Anode Cap, make sure to discharge the Anode Cap's potential voltage.

Do not use pliers to loosen or tighten the Anode Cap terminal, this may cause the spring to be damaged.

REMOVAL

1. Follow the steps as follows to discharge the Anode Cap.

(Refer to Fig. 3-1.)

Connect one end of an Alligator Clip to the metal part of a flat-blade screwdriver and the other end to ground. While holding the plastic part of the insulated Screwdriver, touch the support of the Anode with the tip of the Screwdriver. A cracking noise will be heard as the voltage is discharged.

GND on the CRT

3. After one side is removed, pull in the opposite direction to remove the other.

NOTE

Take care not to damage the Rubber Cap.

INSTALLATION

1. Clean the spot where the cap was located with a small amount of alcohol. (Refer to Fig. 3-3.)

NOTE

Confirm that there is no dirt, dust, etc. at the spot where the cap was located.

Location of Anode Cap

Fig. 3-3

Screwdriver

Alligator Clip

GND on the CRT

Flip up the sides of the Rubber Cap in the direction of

2. the arrow and remove one side of the support.

(Refer to Fig. 3-2.)

Rubber Cap

Support

CRT

Fig. 3-1

2.3.Arrange the wire of the Anode Cap and make sure the wire is not twisted. Turn over the Rubber Cap. (Refer to Fig. 3-4.)

Fig. 3-4

4. Insert one end of the Anode Support into the anode button, then the other as shown in Fig. 3-5.

CRT

Support

Fig. 3-2

Support

CRT

5.6.Confirm that the Support is securely connected. Put on the Rubber Cap without moving any parts.

Fig. 3-5

A/C ACC AE AFC AFT AFT DET AGC AMP ANT A.PB APC ASS'Y AT AUTO A/V

BGP BOT BPF BRAKE SOL BUFF B/W

C CASE CAP CARR CH CLK CLOCK (SY-SE) COMB CONV CPM CTL CYL CYL-M CYL SENS

DATA (SY-CE) dB DC DD Unit DEMOD DET DEV

E EF EMPH ENC ENV EOT EQ EXT

F FBC FE FF FG FL SW FM FSC FWD

GEN GND

H.P.F

KEY TO ABBREVIATIONS

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

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

SYNC SYNC SEP

TR TRAC TRICK PB TP

UNREG

V VCO VIF VP V.PB VR V.REC VSF VSR VSS V-SYNC VT

X'TAL

Y/C

KEY TO ABBREVIATIONS

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

SERVICE MODE LIST

This unit provided with the following SERVICE MODES so you can repair, examine and adjust easily. To enter SERVICE MODE, unplug AC cord till lost actual clock time. Then press and hold Vol (-) button of main unit and

remocon key simultaneously. The both pressing of set key and remote control key will not be possible if clock has been set. To reset clock, either unplug

AC cord and allow at least 5 seconds before Power On.

Set Key Remocon Key Operations

VOL. (-) MIN

VOL. (-) MIN 1

VOL. (-) MIN

VOL. (-) MIN 4

VOL. (-) MIN

Releasing of V-CHIP PASSWORD.

Initialization of the factory. NOTE: Do not use this for the normal servicing.

Horizontal position adjustment of OSD. NOTE: Also can be adjusted by using the Adjustment MENU. Refer to the "ELECTRICAL ADJUSTMENT" (OSD HORIZONTAL).

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

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

Adjusting of the Tracking to the center position. NOTE: Also can be adjusted by pressing the ATR button for more than 2 seconds during PLAY.

POWER ON total hours and PLAY/REC total hours are displayed on the screen. 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".

VOL. (-) MIN 8

VOL. (-) MIN 9

Method Operations

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.

Writing of EEPROM initial data. NOTE: Do not use this for the normal servicing.

Display of the Adjustment MENU on the screen. Refer to the "ELECTRICAL ADJUSTMENT" (On-Screen Display Adjustment).

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"

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

500

hours

1,000 hours

1,500 hours

2,000 hours

3,000 hours

Notes

Clean those parts in contact with the tape.

Clean the rubber, and parts which the rubber touches.

Replace when rolling becomes abnormal.

Clean the Head

CONFIRMATION OF USING HOURS

POWER ON total hours and PLAY/REC total hours can be checked on the screen. Total hours are displayed in 16 system of notation.

NOTE: The confirmation of using hours will not be possible if clock has been set. To reset clock, either unplug

AC cord and allow at least 5 seconds before Power On.

Set the VOLUME to minimum.

While holding down VOLUME button on front cabinet, press key 6 on remote control simultaneously.

After the confirmation of using hours, turn off the power.

INIT 00 83 POWER ON

PLAY/REC

(16 x 16 x 16 x thousands digit value) + (16 x 16 x hundreds digit value) + (16 x tens digit value) + (ones digit value)

0010 0003

Initial setting content of MEMORY IC.

POWER ON total hours. PLAY/REC total hours.

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

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