JVC SRMV-40-US-2 Service manual

SERVICE MANUAL

DVD VIDEO RECORDER & VIDEO CASSETTE RECORDER

YD082B20063

SR-MV40US2

Area Suffix

US ---------------- U.S.A.

DVDTV

CABLE/DBS

TV/CBL/DBS

DVD

VCR

VCR

/DVD

TIMER

/DVD

TIMER

NUMBER/ TV CH /DVD CHNUMBER/ TV CH /DVD CH

1

2

3

ABC DEF

5

4

6

JKL MNO

GHI

8

7

9

TUV

PQRS WXYZ

0

MEMO/MARK

AUX

CANCEL

PROG/CHECK

DISPLAYON SCREEN

PROGRESSIVE

VCR PLUS+

SCAN

TION

VIGA

MENU

U
N

NA

ME
P

O

T

ENTER

S

N

E

T UP

R

U

RET

PREVIOUS NEXT

SLOW

SLOW

PLAY/SELECT

CLEAR

PAUSESTOP/

REMAIN REC

REC MODE

ANGLE

LIVE CHECK

TV/VCR

TV/DVD

SUBTITLE

CH

AUDIO

TV/CBL/DVD

OPERATE

TV

VOL.

TV

S-VIDEO

VIDEO (MONO)L - AUDIO - R

–

IN F-1

CH +

RECDVDDUBBTBCRECVCR

EJECTEJECTTBC

VCR/DVD REC MODE DUBB

DVDVCR DVDVCR

FFREWSTOP

RECPAUSEPLAY

DV IN

SR-MV40US2 [D3RS29]

* Since the whole mechanism assembly unit is replaced, the DVD recorder mechanism of this
unit need not be adjusted.
* For disassembling and assembling of VHS MECHANISM ASSEMBLY, refer to the SERVICE
MANUAL No.86700(MECHANISM ASSEMBLY).
* Regarding service information other than these sections, refer to the service manual No.YD006
(DR-MV1SUS).
Also, be sure to note important safety precautions provided in the service manual.

This model is a model to whom the DVD drive unit and some parts are changed based
on SR-MV40US.
Please see page 1-3 about details and the distinction method.

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

COPYRIGHT © 2006 Victor Company of Japan, Limited

No.YD082B

2006/3

SPECIFICATION

GENERAL

Power requirement AC 120 V, 60 Hz

Power consumption

Power on 55 W

Power off 13.7 W

Temperature

Operating 5°C to 35°C (41°F to 95°F)

Storage -20°C to 60°C (-4°F to140°F)

Operating position Horizontal only

Dimensions (W × H × D) 435 mm × 96 mm × 343 mm (17-3/16" × 3-13/16" × 13-1/2")

Weight 6.2 kg (13.7 lbs)

Input/Output

S-video input Y: 0.8 - 1.2 Vp-p, 75 Ω, C: 0.2 - 0.4 Vp-p, 75 Ω

S-video output Y: 1.0 Vp-p, 75 Ω, C: 0.3 Vp-p, 75 Ω

Video input 0.5 - 2.0 Vp-p, 75 Ω (pin jack)

Video output 1.0 Vp-p, 75 Ω (pin jack × 1, BNC × 1)

Audio input -8 dB, 50 kΩ (pin jack), Corresponding to mono (left)

Audio output -8 dB, 1 kΩ (pin jack)

i.Link 4-pin for DV input

Component video output Y: 1.0 Vp-p, 75 Ω, CB/CR, PB/PR: 0.7 Vp-p, 75 Ω

Remote Input Ø3.5 mm

Digital audio output Optical, Coaxial

VIDEO/AUDIO (DVD Deck)

Recording format DVD-RAM: DVD Video Recording format

Recording time Maximum 8 hours (with 4.7 GB disc)

Audio recording system Dolby Digital (2 ch), Linear PCM (XP mode only)

Video recording compression system MPEG2 (CBR/VBR)

VIDEO/AUDIO (VCR Deck)

Signal system NTSC color signal and EIA monochrome signal, 525 lines/60 fields

Recording system DA4 (Double Azimuth) head helical scan system

Format S-VHS/VHS NTSC standard

Maximum recording time

(SP) 210 min. with ST-210 video cassette

(EP) 630 min. with ST-210 video cassette

Signal-to-noise ratio 45 dB

Horizontal resolution 230 lines(VHS) / 400 lines(S-VHS)

Frequency range 70 Hz to 10,000 Hz (Normal audio) 20 Hz to 20,000 Hz (Hi-Fi audio)

TUNER/TIMER

Tuning system Frequency synthesized tuner

Channel coverage VHF: Channels 2 - 13, UHF: Channels 14 - 69,CATV: 113 Channels

RF output Channel 3 or 4 (switchable; preset to Channel 3 when shipped) 75 Ω, unbalanced

Memory backup time Approx. 5 seconds

ACCESSORIES

Provided accessories RF cable, Audio cable, S-video cable, Infrared remote control unit, "AA" battery × 2

Corresponding to Dolby Digital and DTS Digital Surround

Bit stream Selectable in digital audio output setting menu

DVD-RW: DVD-Video format, DVD Video Recording format

(XP): Approx. 1 hour, (SP): Approx. 2 hours, (LP): Approx. 4 hours

(EP): Approx. 6 hours, (FR): Approx. 1 hour - 8 hours

• Specifications shown are for SP mode unless otherwise specified.

• E.& O.E. Design and specifications subject to change without notice.

• VCR Plus+ and PlusCode are registered trademarks of Gemstar Development Corporation.

• The VCR Plus+ system is manufactured under license from Gemstar Development Corporation.

TM

•DSS

is an official trademark of DIRECTV, Inc., a unit of GM Hughes Electronics. DISH NetworkTM is a trademark of Echostar Communications

Corporation.

• Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories.

• "DTS" and "DTS Digital Out" are trademarks of Digital Theater Systems, Inc.

• (i.Link) refers to the IEEE1394-1995 industry specification and extensions thereof. The logo is used for products compliant with the i.Link stan­dard.

Corresponding to copy protection

DVD-R: DVD-Video format

1-2 (No.YD082B)

About this service manual

This model is a model to whom the DVD drive unit and some parts are changed based
on SR-MV40US.
Since the way of recognizing is explained below, in the case of SR-MV40US2,
please use this manual.
In the case of SR-MV40US, please refer to another service manual (No.YD082 2005/10).

HOW TO IDENTIFY MODELS

How to recognize from the appearance of the model concerned is written below.
Please distinguish from several contents currently printed on the rating label of the left side on main body.

BLANK : SR-MV40US

MODEL NO.

S, NO.

MADE IN

MODEL NO.

S, NO.

MADE IN

The surface of
a rear panel

2

2

2 : SR-MV40US2

PCM/
STREAM

DVD

DIGITAL

AUDIO OUT

OPTICAL

COAXIAL

S VIDEO

COMPONENT

VIDEO OUT

Y

B

P

PR

S VIDEO

VIDEO

L

AUDIO

R

OUTPUT

INPUT L-1

DVD DVD/VCR DVD/VCR

VIDEO

AUDIO

VIDEO

S VIDEO

L

R

L

AUDIO

R

OUTPUT

DVD

REMOTE IN

.

ANT LOOP OUT TV OUT

VCR

IN

OUT

VHF/UHF

(No.YD082B)1-3

SECTION 1

PRECAUTION

Please refer to "DR-MV1SUS No.YD006" about this section.

1-4 (No.YD082B)

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

Please refer to "DR-MV1SUS No.YD006" about this section except a written item.

2.1 DIFFERENT TABLE OF FEATURE

The following table indicates main different points between models DR-MV1SUS and SR-MV40US2.

MODEL NAME DR-MV1SUS SR-MV40US2

BODY COLOR PURE SILVER GRAY

FRONT DOOR USED NOT USED

ILLUMINATION COLOR USED(BLUE) NOT USED

VIDEO SYSTEM VHS S-VHS

S-VHS ET NOT USED USED

SQPB USED NOT USED

TIME BASE CORRECTOR NOT USED USED

3R PICTURE(DIGITAL or ANALOG) NOT USED USED

3D DIGITAL Y/C SEPARATION NOT USED USED

2MB FRAME MEMORY NOT USED USED

CABLE BOX CONTROLLER USED(OPTION) NOT USED

FRONT A/V INPUT CONNECTORS SILVER CONNECTORS GOLD CONNECTORS

VIDEO OUTPUT CONNECTOR PIN JACK TYPE BNC TYPE

REMOTE IN CONNECOTR NOT USED USED

VCR PLUS+ (DVD SIDE) VCR PLUS+C3 VCR PLUS+

LAST FUNCTION MEMORY NOT USED USED

MODE LOCK NOT USED USED

(No.YD082B)1-5

SECTION 3

DISASSEMBLY

3.1 Removing the major parts

Please refer to "DR-MV1SUS No.YD006" about this section.

3.2 DVD Drive unit section

3.2.1 Remove the top cover and tray (See figure 1, figure2, figure3, figure4)

(1) The part a on the reverse side of a DVD drive unit is made

to slide in the direction of an arrow. (A tray ejects a few.)
(2) Remove the four screws A attaching the top cover.
(3) Hooks b are removed, and the top cover is removed.
(4) The tray is drawn out forward.
(5) Remove the two screws B attaching the shaft guide, and

hook c is removed.
(6) It draws it out while lifting the tray in the direction of the ar-

row.

A

Part a

Hook b

A

Top cover

A

Hook b

Fig.1

Hook c

A

B

Fig.2

Shaft guide

B

Tray

Fig.3

1-6 (No.YD082B)

Fig.4

3.2.2 Reassembly the tray (See figure 5)

(1) The slide cam is done in the slide in the direction of the ar-

row.

(2) The shaft guide is done in the slide in the direction in the

back.

(3) The left side of the tray is inserted in the rail of the loading

base, and the shaft guide is built in.

(4) Please push the tray, and confirm whether the tray is nor-

mally good to the close position at the slide by manual.

3.2.3 Remove the traverse mechanism assembly (See figure 6, figure 7)

• Prior to performing the following procedure, remove the top
cover, tray.
(1) Disconnect the FFC wire from connector on the pick-up

unit.

ATTENTION:

The laser diode of "pick-up" might be destroyed by static
electricity. Please work after installing the wristband. In
addition, please do not touch in each part, the terminal,
and the laser diode terminal on the substrate of the pick­up unit. Never

(2) Disconnect the FFC wire from connector CN103

on the servo control board.

(3) Remove the four screws C attaching the traverse mecha-

nism assembly.

, CN104

CN105

Shaft guide

Slide cam

Fig.5

Servo control board

CN103

C

Traverse mechanism assembly

C

C

Hook d Hook d

CN102

CN104

D D

Fig.7

Pick-up unitConnector

Fig.6

(No.YD082B)1-7

3.2.4 Remove the servo control board (See figure 7)

(1) Disconnect the FFC wire from connector CN102

, CN105 on the servo control board.

CN104

(2) Remove the two screws D attaching the servo control

board.

(3) Hooks d is removed, and the servo control board is re-

moved.

3.2.5 Remove the loading motor (See figure 8, figure 9)

• Prior to performing the following procedure, remove the top
cover, tray.
(1) Remove the solder part e soldered on the switch board.
(2) A belt is removed.
(3) Remove the two screws E attaching the loading motor.

, CN103,

Loading

motor

Part e

Switch board

Fig.8

1-8 (No.YD082B)

E

Belt

Fig.9

SECTION 4

ADJUSTMENT

4.1 Before adjustment

Please refer to "DR-MV1SUS No.YD006" about this section.

4.2 Electrical adjustment (VHS SECTION)

Note:

The following adjustment procedures are not only necessary
after replacement of consumable mechanical parts or board
assemblies, but are also provided as references to be referred
to when servicing the electrical circuitry.
In case of trouble with the electrical circuitry, always begin a
service by identifying the defective points by using the measur­ing instruments as described in the following electrical adjust­ment procedures. After this, proceed to the repair,
replacement and/or adjustment. If the required measuring in­struments are not available in the field, do not change the ad­justment parts (variable resistor, etc.) carelessly.

4.2.1 Servo circuit

4.2.1.1 Switching point

Signal (A1)

Mode (B) • PB
Equipment (C) • Oscilloscope
Measuring point (D) • VIDEO OUT terminal (75

External trigger (E) • TP111 (D.FF)
Adjustment part (F) • Jig RCU: Code “43-51”or “43-52”
Specified value (G) • 8.0 ± 0.5H
Adjustment tool (H) • Jig RCU [PTU94023B]

(1) Play back the signal (A1) of the alignment tape (A2).
(2) Apply the external trigger signal to D.FF (E) to observe the

VIDEO OUT waveform and V.PB FM waveform at the

measuring points (D1) and (D2).
(3) Set the VCR to the manual tracking mode.
(4) Adjust tracking so that the V.PB FM waveform becomes

maximum.
(5) Transmit the code (F) from the Jig RCU to adjust so that the

trigger point of the VIDEO OUT wavefome is changed from

the trailing edge of the V.sync signal becomes the specified

value (G).
(6) Set the VCR to the stop mode.

Trigger point

• Stairstep signal

(A2)

• Alignment tape(EP,stairstep,NTSC) [MHP-L]

• TP106 (PB. FM)

Switching point

Ω terminated)

V.sync

4.2.2 Video circuit

4.2.2.1 EE Y/PB Y level

Signal (A1)

Mode (B1)

Equipment (C) • Oscilloscope
Measuring point (D) • Y OUT terminal (75
EVR mode

EVR address

Specified value (G) • 1.00 ± 0.05 Vp-p
Adjustment tool (H) • Jig RCU [PTU94023B]

• Ext. S-input

(A2)

• Ext. input

(A3)

• Color (colour) bar signal [NTSC]

• EE SP

(B2)

•S-VHS SP

(B3)

•VHS SP

Ω terminated)

(F1)

• Jig code “43-57”

(F2)

• A : 11

(F3)

• Jig code “43-21” twice

(F4)

• Jig code “43-18” or “43-19” (Channel +/-)

(1) Input the signal (A3) from the input point (A1).
(2) Set the VCR to the mode (B1).
(3) Observe the Y OUT waveform at the measuring point (D).
(4) Set the VCR to the EVR mode by transmitting the code (F1)

from the Jig RCU.

(5) Set the EVR address to (F2) by transmitting the code (F3)

from the Jig RCU.

(6) Transmit the code (F4) from the Jig RCU to adjust so that

the Y level of the Y OUT waveform becomes the specified
value (G).

(7) Release the EVR mode of the VCR by transmitting the

code (F1) from the Jig RCU again. (When the EVR mode

is released, the adjusted data is memorized.)
(8) Input the signal (A3) from the input point (A2).
(9) Repeat steps (3) to (7) in the mode (B1).

(10) Record the signal (A3) in the mode (B2), and play back the

recorded signal.

(11) Set the VCR to the manual tracking mode.
(12) Repeat steps (3) to (7) in the mode (B2).
(13) Record the signal (A3) in the mode (B3), and play back the

recorded signal.

(14) Set the VCR to the manual tracking mode.
(15) Repeat steps (3) to (7) in the mode (B3).

Fig.4-1a Switching point

V. rate

Y level

H. rate

Fig.4-1b EE Y/PB Y lebel

(No.YD082B)1-9

4.2.3 Audio circuit

Note:

• GND (Ground) should be taken from the Tuner shield

case.

4.2.3.1 Audio REC FM

Signal (A1)

Mode (B) • S-VHS EP

Equipment (C) • Oscilloscope

Measuring point (D) • TP2253 (A. PB FM) [Main board]

External trigger (E) • TP111 (D.FF)

Adjustment part (F) • VR2251 (FMA REC LEVEL)

Specified value (G1)

• Ext. input

• Audio: No signal

(A2)

• Video: Color (colour) bar signal [NTSC]

(A3)

•TBC:OFF

• 350 ± 50 mVp-p

(G2)

• More than 200 mVp-p

(1) Apply the external trigger signal to D.FF (E) to observe the

Audio PB FM waveform at the measuring point (D).

4.3 Electrical adjustment

Please refer to "DR-MV1SUS No.YD006" about this section.

(2) Record the signal (A3) with no audio signal input in the

mode (B), and play back the recorded signal.
(3) Set the VCR to the manual tracking mode.
(4) If the A.PB FM level is not within the specified value (G1),

perform the adjustment in a following procedure.
(5) Adjust the Adjustment part (F) so that the A. PB FM level of

the higher channel level becomes the specified value (G1).

(Adjust before recording, then confirm it by playing back.)
(6) If the specified value (G1) is not obtained, adjust the Ad-

justment part (F) so that the waveform level of the lower

channel level becomes the specified value (G2). (Adjust

before recording, then confirm it by playing back.)

Specified
value (G2)

V. rate

Specified
value (G1)

Fig.4-1c Audio REC FM

1-10 (No.YD082B)

SECTION 5

TROUBLESHOOTING

5.1 Manually removing the cassette tape

Please refer to "DR-MV1SUS No.YD006" about this section.

5.2 Manually removing the disk(DVD/CD)

< Method 1 >

There is a forced tray eject mode with electrical operation.
(1) Right after plugging in the power code (while “LOADING” blink and it is displayed), keep pressing the OPEN/CLOSE button of

the main body.
(2) Remove the disc as the tray is ejected in a short while.
(3) The tray closes automatically at about five seconds.

< Method 2 >

When < Method 1 > can not remove the disc, the tray can be ejected mechanically without turning the power on.

(1) The DVD drive unit is detached from the main body.
(2) The part a on the reverse side of a drive unit is made to slide in the direction of an arrow with a screw driver etc.
(3) As the tray ejects a little, pull out the tray manually.

Part a

5.3 Emergency display function (VHS SECTION)

Please refer to "DR-MV1SUS No.YD006" about this section.

5.4 Display function of DVD section

Please refer to "DR-MV1SUS No.YD006" about this section.

(No.YD082B)1-11

Victor Company of Japan, Limited
DIGITAL VIDEO STORAGE CATEGORY 12, 3-chome, Moriya-cho, kanagawa-ku, Yokohama, kanagawa-prefecture, 221-8528, Japan

(No.YD082B)

Printed in Japan

VPT

PARTS LIST

[SR-MV40US2]

* SAFETY PRECAUTION

Parts identified by the  symbol are critical for safety. Replace only with
specified part numbers.

* BEWARE OF BOGUS PARTS

Parts that do not meet specifications may cause trouble in regard to safety and
performance. We recommend that genuine JVC parts be used.

* (x_) in a description column shows the number of the used part.

- Contents -

Exploded view of general assembly and parts list
DVD mechanism assembly and parts list
VHS mechanism assembly and parts list
Electrical parts list
Packing materials and accessories parts list

3-2
3-5
3-7
3-10
3-26

(No.YD082B)3-1

Exploded view of general assembly and parts list

6

6

4

!

6

6

i

Jack board assembly<94>

31

11

c

a

c

i

7

10

Digital board assembly<02>

24

Jack board
assembly<36>

e'

S-VHS sub/3d
board assembly<15>

Main board assembly<03>

1

!

1A

j

j

5

5

BNC board assembly<97>

22

18

1

r

q

j

18

j

22

!

29

9

1B

j

8

36A

q

36

18

VHS mechanism assembly<M3>

g

h

17

19

r

30

UP

UP

Osd board assembly<17>

JS3001

22

a

i

a

b

a

b

e

29

e

d

e

d

k

29

11

g

h

j

a

a

i

c

e

b

m

c

b

e

29

Junction board assembly<92>

Block No. M1MM

14

!

26

25

25

15

21

f

i

t

20

13

13

D

D

12

16

16

24

e'

m

d

e

d

e'

24

e'

28

k

24

e

e'

e

e'

e'

e

e

i

37

34

35

13

D

D

16

13

16

24

27

CN5001

!

f

23

c

23

23

c

c

23

c

3-2(No.YD082B)

Switching regulator board assembly<01>

CN3104

CN7201

WR12

WR9

WR10

WR11

Demod board assembly<14>

Main board assembly

CN3104

BNC board assembly

J7501

FW7504

CN7502

CN501

CN2

CN3

CN2001

WR2

A/C HEAD

Jack board assembly

CN7501

CN8501

CN5302

WR1

CN5311

CN5301

CN3106

CN7123

CN8001

CN2601 CN3103

CN7102

DRIVE

CN3102

CN7103

FAN

Switching regulator
board assembly

CN5304

CN701

CN7107

CN5503

WR6

UNIT

Digital board assembly

CN5501

CN2201

WR7

WR8

CN1404

CN5001

CN7124

CN7106

from FRONT PANEL
(Operation jack CN7201)

Operation jack board assembly<27>

to MAIN BOARD ASSY
(CN3104)

32

WR3

3

33

CN7201

3

3

NOTE) INSERT FFC WIRE
TO THE CONNECTOR
BEFORE ATTACHING
TO FRONT PANEL.

BOTTOM SIDE

2

3

CN7202

CN7001

NOTE)Push the slack of the wire

into the CN7202 side.

TOP SIDE

Junction
board assembly

33

32

WR4

Switch display board assembly<28>

WR5

CN7001

CN7002

2

NOTE) WHEN YOU FIX ANY PWB
WITH THE SCREW,
PUT IT ON THE JIGS.

NOTE) FJ CONN should be
insert as follows.

OK

CN

JUNCTION BOARD ASSY CN7102
JUNCTION BOARD ASSY CN8001
JUNCTION BOARD ASSY CN5501

NG

CN

MAIN BOARD ASSY CN3103
MAIN BOARD ASSY CN2601
SWITCHING REGULATOR
BOARD ASSY CN5304

MAIN BOARD ASSY CN5311

SWITCHING REGULATOR
BOARD ASSY CN5301

2

(No.YD082B)3-3