Memorex MVR4046A Manuel utilisateur

SERVICE MANUAL

Design and specifications are subject to change without notice.

MVR4046A

VIDEO CASSETTE RECORDER

ORIGINAL

MFR’S VERSION A

A1-1

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.

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.

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.

1. KEEP THE NOTICES 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.

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.

HOW TO ORDER PARTS

SERVICING NOTICES ON CHECKING .....................................................................................

HOW TO ORDER PARTS ...........................................................................................................

CONTENTS.................................................................................................................................

GENERAL SPECIFICATIONS ....................................................................................................

DISASSEMBLY INSTRUCTIONS

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

2. REMOVAL OF DECK PARTS ............................................................................................

KEY TO ABBREVIATIONS.........................................................................................................

SERVICE MODE LIST.................................................................................................................

PREVENTIVE CHECKS AND SERVICE INTERVALS..............................................................

NOTE FOR THE REPLACING OF MEMORY IC .......................................................................

SERVICING FIXTURES AND TOOLS........................................................................................

PREPARATION FOR SERVICING .............................................................................................

MECHANICAL ADJUSTMENTS.................................................................................................

ELECTRICAL ADJUSTMENTS ..................................................................................................

BLOCK DIAGRAMS

Y/C/AUDIO/CCD/HEAD AMP ..................................................................................................

SYSTEM CONTROL/SERVO/DECK.......................................................................................

TUNER.....................................................................................................................................

HI-FI.........................................................................................................................................

OPERATION/POWER .............................................................................................................

PRINTED CIRCUIT BOARDS

SYSCON/OPERATION/DECK.................................................................................................

SYSCON/OPERATION ............................................................................................................

SCHEMATIC DIAGRAMS

Y/C/AUDIO/CCD/HEAD AMP ..................................................................................................

SYSTEM CONTROL/SERVO ..................................................................................................

TUNER.....................................................................................................................................

POWER ...................................................................................................................................

OPERATION ...........................................................................................................................

HI-FI.........................................................................................................................................

DECK.......................................................................................................................................

INTERCONNECTION DIAGRAM................................................................................................

WAVEFORMS.............................................................................................................................

MECHANICAL EXPLODED VIEW .............................................................................................

CHASSIS EXPLODED VIEWS ...................................................................................................

MECHANICAL REPLACEMENT PARTS LIST..........................................................................

CHASSIS REPLACEMENT PARTS LIST ..................................................................................

ELECTRICAL REPLACEMENT PARTS LIST ...........................................................................

CONTENTS

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

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

A3-1

G-1.Outline of the Product

3 -Speed 1/2" Video Cassette Recorder

G-2.VCR Format

VHS Standard NTSC PAL SECAM PAL-M PAL-N

VHS Hi-Fi Audio System

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

Luminance Component : FM recording

Chrominance Component: Low frequency converted direct recording

G-4.Broadcasting System

US System M

G-5.Color System NTSC PAL SECAM or Monochrome

G-6.NTSC Playback(PAL60Hz) Yes No

G-7.MESECAM Yes No

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 PAL or SECAM

SP 33.35 mm/sec SP 23.39 mm/sec

LP 16.67 mm/sec LP 11.69 mm/sec

SLP 11.12 mm/sec

G-10.Recording/Playback Time

NTSC or PAL-M

at SP Mode Max. 210 min. (with T-210 cassette)

at LP Mode Max. 420 min. (with T-210 cassette)

at SLP Mode Max. 630 min. (with T-210 cassette)

PAL or SECAM

at SP Mode Max. 300 min. (with E-300 cassette)

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

G-11.Deck OVD-5 OVD-6 OVD-6S OVD-6S(Vertical)

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

FF:1' 48" / Rew:1' 48" (with T-120 cassette)

(with E-180 cassette)

G-13.Search Speed

SP 3 and 5 Times

LP 7 and 9 Times

SLP 9 and 15 Times

G-14.Slow Speed

SP 1/5 ~ 1/30 Times

LP 1/5 ~ 1/30 Times

SLP 1/5 ~ 1/30 Times

G-15.Frame Advance

SP 1/10 Times

LP 1/10 Times

SLP 1/10 Times

G-16.Antenna Input Impedance

VHF/UHF 75 ohm unbalanced

GENERAL SPECIFICATIONS

A3-2

G-17.Tuner and Receiving Channel

Tuner: Contactless Electric Tuner

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

Channel coverage

2 ~ 69 , 4A , A-5 ~ A-1 , A ~ I , J ~ W , W+1 ~ W+84

Tuning System

Frequency syn. Voltage syn. Others

G-18.Preset Channel

No -- channels

Allocation ch ~ ch

ch ~ ch

G-19.Intermediate Frequency

Picture(FP) 45.75 MHz MHz MHz

Sound (FS) 41.25 MHz MHz MHz

FP-FS 4.50 MHz MHz MHz

G-20.RF Converter Output

Channel 3 or 4 ch. ~

Level/Impedance 66 dBµ/ 75 ohm

Sound Selector Yes( G I K) No

G-21.Stereo/Dual TV Sound

Yes( NICAM GERMAN USA JAPAN) No

G-22.Video Signal

Input Level 1 Vp-p / 75 ohm

Output Level 1 Vp-p / 75 ohm

S/N Ratio 50 dB (Weighted)

Horizontal Resolution at SP Mode 230 Lines

G-23.Audio Signal

Input Level Microphone -- dB / -- Kohm

Line -- dB / -- Kohm

RCA - 8 dB / 50 Kohm

Output Level Line -- dB / -- Kohm

RCA - 8 dB / 1 Kohm(0dB=0.775 Vrms)

S/N Ratio at SP Mode 42 dB (Weighted)

Harmonic Distortion : 1.5 % (1KHz)

Frequency Response : at SP Mode 100 Hz ~ 10 KHz

at LP Mode 100 Hz ~ 6 KHz

at SLP Mode 100 Hz ~ 4 KHz

Hi-Fi Audio Signal NONE

Depth Multiplex Recording Rotary, Slant Azimuth Two Head

System Helical Scan System

Dynamic Range : More than 90 dB

Wow And Flutter : Less than 0.01 % Wrms

Channel Separation : More than 60 dB

Harmonic Distortion : Less than 1 %

G-24.Heads Video 4 Rotary Heads

FM Audio 2 Rotary Heads

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

Erase 1 Full Track Erase

G-25.Motor: 3 Motors

Tape/Cassette Loading

Cylinder (Direct Drive)

Capstan (Direct Drive)

GENERAL SPECIFICATIONS

A3-3

G-26.Power Source

120 V AC 50Hz AC 60Hz

G-27.Power Consumption: 11 W at AC 120 V 60 Hz

Stand by: 1.5 W at AC 120 V 60 Hz

Per Year: -- kWh / Year

G-28.Dimensions(Approx.)

360 mm(W) 240 mm(D) 95 mm(H)

G-29.Weight(Approx.) Net : 3.2 Kg ( 7.1 lbs)

Gross : 3.8 Kg ( 8.4 lbs)

G-30.Cabinet Material

Cabinet Front: PS 94HB DECABROM

ABS 94V2 NON-DECA

94V0

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 CSA SAA SI CE SEV

NEMKO FEMKO DEMKO IEC65 CNS SISIR

SEMKO NZ HOMOLO SABS GOST

NOM AS3159 DENTORI UNE NONE

Radiation

FCC DOC PTT CE SEV

SABA SI NZ HOMOLO UNE

CNS CISPR13 DENTORI AS/NZS NONE

G-35.Temperature

Operation 5 ºC ~ 40 ºC

Storage -20 ºC ~ 60 ºC

G-36.Operating Humidity : Less than 80 %RH

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.TerminalsVHF/UHF Antenna Input/Output Din Type F-Type France Type

Front Video Input<RCAø8.3>

Front Audio Input<RCAø8.3> x2

Rear Video Input<RCAø8.3>

Rear Audio Input<RCAø8.3>

Rear Video Output<RCAø8.3>

Rear Audio Output<RCAø8.3> x2

21 Pin

G-40.Indicator Power Play ATR Repeat Tape In

( Red ) ( ) ( ) ( ) ( )

TV/VCR REC T-REC NONE

( Red ) ( Red ) ( Red )

GENERAL SPECIFICATIONS

A3-4

G-41.Display

Fluorescent Indicator Yes No

Clock/Counter,Channel,Timer Rec,OTR,Play,Rec,FF(Cue),Rew(Rev),

Pause,ATR,Eject

WKL,Y.M.D,Start,End AFT Repeat

VCR Memory Index VPS PDC

SP LP SLP AM PM

On Screen Display

Menu Clock Set( Calendar 12H 24H)

Timer Rec Set

Auto Repeat On/Off

CH Set TV/CATV

Auto CH Memory

ADD/Delete

Sap On/Off

No Noise Back Ground

Language

G-CODE(or SHOWVIEW or PLUSCODE)No. Entry

NICAM M1/2,NICAM Off,Audio Output

Stereo,Audio Output,Bilingual

Stereo,Audio Output,SAP Stereo,Audio Output

Play/Stop/FF/Rew/Rec/OTR/T-Rec/Pause

CH/AV Clock Memory Pin Code

Tape Counter Index Hotel Lock Tape Speed

Tracking Hi-Fi Tape In Repeat

Dirty Head

G-42.OSD Language

Eng Ger Fre Spa Ita Por Jan

OSD Language Setting

Eng Ger Fre Spa Ita Por Jan

Not Applicable

G-43.Carton

Master Carton: Need No Need

Content: ---- Set

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

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

Description of Origin Yes No

Gift Box Need No Need

Material Single/Brown Corrugated Carton ( with Photo Label)

Single/White Corrugated Carton ( with Photo Label)

Single Full Color Carton W/Photo

Dimensions: 430 mm(W) 310 mm(D) 165 mm(H)

Design: As Per BUYER 's

Description of Origin: Yes No

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

Height 25cm 31cm 46cm 62cm 80cm 100cm

Container Stuffing: 2,828 Sets / 40' container

GENERAL SPECIFICATIONS

A3-5

G-44.Accessories

Owner's Manual ( W/Guarantee Card) [English/French]

Remote Control Unit Dew Caution Sheet

Video Cassette Tape Battery (UM- 4 x 2 )

Safety Tip Toll Free Insert Sheet

Guarantee Card Audio-Video Cord (RCA)

Warning Sheet Quick Set-Up Sheet

Information Sheet U/V Mixer

75 ohm Coaxial Cable ( Single Shield Double Shield)

300 ohm to 75 ohm VHF Antenna Adaptor

21pin Cable Car Cord

G-45.Other Features

Auto Head Cleaning Index Search

Auto Tracking Auto Search

CH Auto Set-Up/Auto Clock ATS

VIDEO PLUS+, SHOWVIEW, G-CODE PDC

HQ (VHS Standard High Quality) VPS

Auto Power On, Auto Play, Auto Rewind, Auto Eject,Auto Power Off

Premiere/ Canal+ Full OSD

Forward / Reverse Picture Search SQPB

One Touch Playback SAP

CATV Channel Lock

Auto CH Memory Anti Theft

Just Clock Function Hotel Lock

Kurupika Guide CM Skip(30s x 6 Times)

Rental Game Position

Self Seeking Dirty Head Warning

Energy Star

G-46.Switch

Front Power Channel Up Channel Down

Play F.FWD/Cue Rew/Rev

Pause/Still Eject/Stop Rec/OTR

System Select Input Select Output Select

One Touch Playback

Rear RF-Converter Output Channel Selector( 1 or 2CH 3 or 4CH)

TV/CATV Selector

SIF Selector

GENERAL SPECIFICATIONS

A3-6

G-47.Remote Control Unit: RC-DC

Glow in Dark Remocon Yes No

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

Control Key :Total 40 Key

0 Ch Up Power

1 Ch Down Eject

2 Input Select Play

3 Audio Select Stop

4 TV/VCR F.FWD

5 Pause/Still Rew

6 Slow Timer Rec

7 Slow Speed Up REC/OTR

8 Slow Speed Down Auto Tracking

9 Skip Search Tracking Up

Menu Speed Tracking Down

Set Up TV Monitor Counter Reset

Set Down Index Clock/Counter

Enter Program Zero Return

Cancel Video Plus One Touch Playback

Call Program/Video Plus

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)

Remove the 4 screws 1.

Remove the Top Cabinet in the direction of arrow (A).

Disconnect the following connector: (CP651).

Unlock the 7 supports 2.

Remove the Front Cabinet in the direction of arrow (B).

Remove the 4 screws 3and remove the Operation PCB.

1-3: DECK CHASSIS (Refer to Fig. 1-3)

Remove the 3 screws 1.

Remove the screw 2.

Disconnect the following connectors: (CP1001, CP1002,

CP1003, CP4001, CP4002 and CP4003).

Remove the Deck Chassis in the direction of arrow.

1-2: FLAP (Refer to Fig. 1-2)

Open Flap to 90˚ and flex in direction of arrow (A), at

the same time slide in direction of arrow (B).

Then lift in direction of arrow (C).

(A)

(C)

(B)

Flap

Fig. 1-2

1-4: SYSCON PCB AND JACK PLATE (Refer to Fig. 1-4)

B1-1

Front Cabinet

Fig. 1-1

(B)

(A)

Top Cabinet

Operation PCB

Bottom Plate

Deck Chassis

Fig. 1-3

Remove the screw 1.

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

Unlock the 2 supports 2.

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

Fig. 1-4

Syscon PCB

(B)

Bottom Plate

(A)

Jack Plate

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