Memorex MVR-4040A User manual

SERVICE MANUAL
Design and specifications are subject to change without notice.
MVR4040A
ORIGINAL
MFR’S VERSION A
VIDEO CASSETTE RECORDER

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
4.
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
A1-1

CONTENTS
A2-1
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

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.Rewind/Fast Forward Time(Approx.)
FF:1' 48" / Rew:1' 48" (with T-120 cassette)
(with E-180 cassette)
G-12.Search Speed
SP 3 and 5 Times
LP 7 and 9 Times
SLP 9 and 15 Times
G-13.Slow Speed
SP 1/5 ~ 1/30 Times
LP 1/5 ~ 1/30 Times
SLP 1/5 ~ 1/30 Times
G-14.Frame Advance
SP 1/10 Times
LP 1/10 Times
SLP 1/10 Times
G-15.Antenna Input Impedance
VHF/UHF 75 ohm unbalanced

GENERAL SPECIFICATIONS
A3-2
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 -- channels
Allocation ch ~ ch
ch ~ ch
ch ~ ch
G-18.Intermediate Frequency
Picture(FP) 45.75 MHz MHz MHz
Sound (FS) 41.25 MHz MHz MHz
FP-FS 4.50 MHz MHz MHz
G-19.RF Converter Output
Channel 3 or 4 ch. ~
Level/Impedance 66 dBµ/ 75 ohm
Sound Selector Yes( G I K) No
G-20.Stereo/Dual TV Sound
Yes( NICAM GERMAN USA JAPAN) No
G-21.Tuner Sound Muting Yes 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 120 Hz ~ 10 KHz
at LP Mode 120 Hz ~ 6 KHz
at SLP Mode 120 Hz ~ 4 KHz
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: 12 W at AC 120 V 60 Hz(Approx.)
Stand by: 2.5 W at AC 120 V 60 Hz(Approx.)
Per Year: -- kWh / Year
G-28.Dimensions(Approx.)
360 mm(W) 240 mm(D) 95 mm(H)
G-29.Weight(Approx.) Net : 3.3 Kg ( 8.8 lbs)
Gross : 4.6 Kg ( 10.2 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.Terminals VHF/UHF Antenna Din Type F-Type France Type
Video Input(Front) Phono Jack (RCA ø8.3) BNC
Video Input(Rear) Phono Jack (RCA ø8.3) BNC
Video Output(Rear) Phono Jack (RCA ø8.3) BNC
Audio Input(Front) Phono Jack (RCA ø8.3)x2
Audio Input(Rear) Phono Jack (RCA ø8.3)x2
Audio Output(Rear) Phono Jack (RCA ø8.3)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),
Still,Pause,ATR,Eject,Stop
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
Sap On Off
CH SetTV/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 Pin Code
Tape Counter Index Tracking Tape Speed
Hi-Fi
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: 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

GENERAL SPECIFICATIONS
A3-5
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 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-CA
Glow in Dark Remocon Yes No
Power Source: D.C 3 V Battery UM - 4 x 2
Control Key :Total 43 Key
0 Ch Up Power
1 Ch Down Eject
2 Cancel/Ch Skip Play
3 Cancel Play/Up
4 Enter Play/Slow/Up
5 Speed F.FWD
6 Index F.FWD/Right
7 Program Rew
8 Program/Video Plus Rew/Left
9 Video Plus Pause/Still
10 Set Up Pause
11 Set Down Stop
12 Set Right Stop/Down
./.. Set Left REC/OTR
Auto Tracking Call Clock/Counter
Jog/Shuttle Menu Zero Return
Dial JOG TV/VCR Counter Reset
Ring Shuttle Timer Rec Audio Select
One Touch Playback Audio Dubbing TV Monitor
Input Select Skip Search Slow Speed Up
Slow Tracking Up Slow Speed Down
Tracking 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 %

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.
2.
3.
4.
5.
6.
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.
3.
4.
Bottom Plate
Deck Chassis
Fig. 1-1
1-2: FLAP (Refer to Fig. 1-2)
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)
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).
1.
2.
3.
4.
Fig. 1-3
1
Top Cabinet
3
1
1
1
(A)
Front Cabinet
(B)
33
3
Operation PCB
2
2
2
2
2
2
2
1
2
1
1
B1-1
Fig. 1-4
Syscon PCB
(A)
Jack Plate
(B)
Bottom Plate
2
21