JVC DR-MH20SE, DR-MH20SEF, DR-MH20SEK, DR-MH30SE, DR-MH30SEF Service Manual

...

SERVICE MANUAL

DVD&HDD VIDEO RECORDER

YD02720049

DR-MH20SE, DR-MH20SEK, DR-MH20SEF

DR-MH30SE, DR-MH30SEK

DR-MH30SEF, DR-MH30SER

Area Suffix

EK ------------------------ U.K. EF --------------------- France ER ---- Russian Federation E ------- Continental Europe Northern Europe

OPEN/ CLOSE

TV AV

TV/CBL/SAT

VIDEO

HDD DVD

AUX

CANCEL

MEMO/MARK

EDIT

DUBBING

LIVE

ENTER

CLEAR

STOP/

JUMP

REC MODE

DISPLAY

ON SCREEN

SAT SET UP

VPS/PDC

AUDIO

SUBTITLE

ANGLE

LIVE CHECK

CABLE/SAT

STANDBY ON

PROGRAMME

NAVIGATIONTOP MENU

RETURN

NEXTPREVIOUS

SLOWSLOW PLAY/SELECT

PAUSEREC

PROGRESSIVE

Only ver.EK

DVDTV

DVD

HELP

STANDBY/ON

SCAN

Only ver.E,EF,ER

VIDEO

S-VIDEO VIDEO

Only ver.ER

L(MONO)-AUDIO-R

HDD DVD

DV IN

PULL - OPEN

DR-MH20SE, DR-MH20SEK, DR-MH20SEF [D4HR20] DR-MH30SE, DR-MH30SEK, DR-MH30SEF, DR-MH30SER [D4HR25]

Since the whole mechanism assembly unit is replaced, the DVD recorder mechanism of this unit need not be adjusted.

TABLE OF CONTENTS

1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12

No.YD027

2004/9

SPECIFICATION

GENERAL

Power requirement AC 220 V - 240 V~, 50 Hz/60 Hz

Power consumption Power on : 37 W

Temperature Operating : 5°C to 40°C

Operating position Horizontal only

Dimensions (W × H × D) 435 mm × 70 mm × 345.5 mm

Weight 6.1 kg

Input/Output

Component video output Y : 1.0 Vp-p, 75 ohms

VIDEO/AUDIO (DVD Deck)

Audio recording system Dolby Digital (2 ch)

Video recording compression system

VIDEO/AUDIO (HDD Deck)

Video recording compression system

Audio recording system Dolby Digital (2 ch)

TUNER/TIMER

TV channel storage capacity

Channel coverage(PAL) VHF(LOW): 47 MHz-89 MHz

ACCESSORIES

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

• Manufactured under licence from Dolby Laboratories. “Dolby” and double-D symbol are trademarks of Dolby Laboratories.

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

• SHOWVIEW is a registered trademark of Gemstar Development Corporation. The SHOWVIEW system is manufactured under licence from Gemstar Development Corporation.

• This product incorporates copyright protection technology that is protected by method claims of certain U.S. patents and other intellectual property rights owned by Macrovision Corporation and other rights owners. Use of this copyright protection technology must be authorized by Macrovision Corporation, and is intended for home and other limited viewing users only unless otherwise authorized by Macrovision Corporation. Reverse engineering or disassembly is prohibited.

• VIDEO Plus+ and PlusCode are registered trademarks of Gemstar Development Corporation. The VIDEO Plus+ system is manufactured under license from Gemstar Development Corporation.

S-video input Y:0.8-1.2 Vp-p, 75 ohms

S-video output Y : 1.0 Vp-p, 75 ohms

Video input 0.5- 2.0 Vp-p, 75 ohms (pin jack) Audio input -8 dB, 50 kilohms (pin jack)

Audio output -8 dB, 1 kilohms (pin jack)

Digital audio output Optical: -18 dBm, 660 nm

RCA connectors IN x 1, OUT x 1

Recording time

Signal system PAL-type colour signal and CCIR monochrome signal, 625 lines 50 fields

Tuning system Frequency synthesized tuner

Channel coverage

(SECAM-L)

Memory backup time Approx. 60 seconds

Provided accessories

DR-MH20SE,DR-MH30SE,DR-MH30SER

Power off : 19.3 W

Storage : -20°C to 60°C

C : 0.2 -0.4 Vp-p, 75 ohms

C : 0.3 Vp-p, 75 ohms

Corresponding to mono (left)

i.Link 4-pin for DV input

CB/CR, PB/PR: 0.7 Vp-p, 75 ohms Corresponding to copy protection

Coaxial: 0.7 Vp-p, 75 ohms Corresponding to Dolby Digital and DTS Digital Surround Bit stream Selectable in digital audio output setting menu

Maximum 8 hours (with 4.7 GB disc) (XP) : Approx. 1 hour, (SP) : Approx. 2 hours, (LP) : Approx. 4 hours, (EP) : Approx. 6 hours, (FR) : Approx. 1 hour - 8 hours

Linear PCM (XP mode only) MPEG2 (CBR/VBR)

MPEG2 (VBR)

Linear PCM (XP mode only) Maximum 204 hours (XP): Approx. 34 hours,(SP): Approx. 68 hours,(LP): Approx. 136 hours,(EP): Approx. 204 hours,(FR480): Approx. 272 hours

99 positions (+AUX position)

VHF(HIGH):104 MHz -300 MHz Hyper:302 MHz-470 MHz UHF 470 MHz-862 MHz

RF cable,21-pin SCART cable,Satellite Controller,Infrared remote control unit,”R6” battery x 2

DR-MH20SEK,DR-MH30SEK DR-MH20SEF,DR-MH30SEF

VHF(LOW):49 MHz-65 MHz(2-4) VHF(HIGH):104 MHz-300 MHz(5-10CATV) Hyper:300 MHz-470 MHz(CATV)

UHF:470 MHz-862 MHz(21-69) VHF(LOW):44.5 MHz-143 MHz VHF(HIGH):143 MHz-470 MHz UHF: 470 MHz-862 MHz

RF cable,21-pin SCART cable,Satellite Controller,Infrared remote control unit,”AA” battery x 2

VHF(LOW):47 MHz-89 MHz

(E2-E4,X,Y,Z)

VHF(HIGH):104 MHz-300 MHz

(E5-E12,S1-S20,M1-M10,U1-U10)

Hyper:302 MHz-470 MHz(S21-S41)

UHF:470 MHz-862 MHz(E21-E69)

RF cable,21-pin SCART cable,Satellite Control-

ler,Infrared remote control unit,”R6” battery x 2

1-2 (No.YD027)

SECTION 1

PRECAUTION

1.1 Safety Precautions

(1) This design of this product contains special hardware and

many circuits and components specially for safety purposes. For continued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replacement parts must be identical to those used in the original circuits. Services should be performed by qualified personnel only.

(2) Alterations of the design or circuitry of the product should

not be made. Any design alterations of the product should not be made. Any design alterations or additions will void the manufacturers warranty and will further relieve the manufacture of responsibility for personal injury or property damage resulting therefrom.

(3) Many electrical and mechanical parts in the products have

special safety-related characteristics. These characteristics are often not evident from visual inspection nor can the protection afforded by them necessarily be obtained by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have these special safety characteristics are identified in the Parts List of Service Manual. Electrical components having such features are identified by shading on the schematics and by ( ) on the Parts List in the Service Manual. The use of a substitute replacement which does not have the same safety characteristics as the recommended replacement parts shown in the Parts List of Service Manual may create shock, fire, or other hazards.

(4) The leads in the products are routed and dressed with ties,

clamps, tubings, barriers and the like to be separated from live parts, high temperature parts, moving parts and/or sharp edges for the prevention of electric shock and fire hazard. When service is required, the original lead routing and dress should be observed, and it should be confirmed that they have been returned to normal, after reassembling.

(5) Leakage shock hazard testing

After reassembling the product, always perform an isolation check on the exposed metal parts of the product (antenna terminals, knobs, metal cabinet, screw heads, headphone jack, control shafts, etc.) to be sure the product is safe to operate without danger of electrical shock.Do not use a line isolation transformer during this check.

• Plug the AC line cord directly into the AC outlet. Using a "Leakage Current Tester", measure the leakage current from each exposed metal parts of the cabinet, particularly any exposed metal part having a return path to the chassis, to a known good earth ground. Any leakage current must not exceed 0.5mA AC (r.m.s.).

• Alternate check method Plug the AC line cord directly into the AC outlet. Use an

AC voltmeter having, 1,000Ω per volt or more sensitivity in the following manner. Connect a 1,500Ω 10W resistor paralleled by a 0.15µF AC-type capacitor between an ex-

posed metal part and a known good earth ground. Measure the AC voltage across the resistor with the AC

voltmeter. Move the resistor connection to each exposed metal part, particularly any exposed metal part having a return path to the chassis, and measure the AC voltage across the resistor. Now, reverse the plug in the AC outlet and repeat each measurement. Voltage measured any must not exceed 0.75 V AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.).

AC VOLTMETER (Having 1000 ohms/volts, or more sensitivity)

0.15 F AC TYPE

Place this probe on

1500 10W

Good earth ground

1.2 Warning

(1) This equipment has been designed and manufactured to

meet international safety standards.

(2) It is the legal responsibility of the repairer to ensure that

these safety standards are maintained.

(3) Repairs must be made in accordance with the relevant

safety standards.

(4) It is essential that safety critical components are replaced

by approved parts.

(5) If mains voltage selector is provided, check setting for local

voltage.

1.3 Caution

Burrs formed during molding may be left over on some parts of the chassis. Therefore, pay attention to such burrs in the case of preforming repair of this system.

1.4 Critical parts for safety

In regard with component parts appearing on the silk-screen printed side (parts side) of the PWB diagrams, the parts that are printed over with black such as the resistor ( ), diode ( ) and ICP ( ) or identified by the " " mark nearby are critical for safety. When replacing them, be sure to use the parts of the same type and rating as specified by the manufacturer. (This regulation dose not Except the J and C version)

each exposed metal part.

(No.YD027)1-3

1.5 Important for laser products

1.CLASS 1 LASER PRODUCT

2.DANGER : Invisible laser radiation when open and inter

lock failed or defeated. Avoid direct exposure to beam.

3.CAUTION : There are no serviceable parts inside the

Laser Unit. Do not disassemble the Laser Unit. Replace

the complete Laser Unit if it malfunctions.

4.CAUTION : The CD,MD and DVD player uses invisible

laser radiation and is equipped with safety switches which

prevent emission of radiation when the drawer is open and

the safety interlocks have failed or are defeated. It is

dangerous to defeat the safety switches.

5.CAUTION : If safety switches malfunction, the laser is able

to function.

6.CAUTION : Use of controls, adjustments or performance of

procedures other than those specified here in may result in

hazardous radiation exposure.

Please use enough caution not to see the beam directly or touch it in case of an adjustment or operation check.

REPRODUCTION AND POSITION OF LABEL and PRINT

WARNING LABEL and PRINT

On mechaism assembly

1-4 (No.YD027)

1.6 Hard Disk Drive (HDD) Handling Precautions

The HDD is a precision device for use in reading and writing a large amount of data on or from a disk rotating at a high speed. If it is not handled carefully, either abnormal operation may result or it may not be possible to read data. The HDD is sensitive to the following items and special care is required in safeguarding against them when handling an HDD. Also take care in handling a set incorporating an HDD.

(1) Vibrations and impacts (2) Static electricity (3) Rough handling

1.6.1 Handling in transport, etc.

• Be sure to place the HDD in the manufacturer's specified package carton before transport.

• When receiving a package containing an HDD, check that the package carton is not damaged (such as having holes in the carton, crushed corners, etc.).

• Do not impact the packaging carton when loading or unloading

HDD Do not throw or drop packages.

it.

• It is not permitted to use the inner package carton only for transporting an HDD.

• Do not stack package cartons one upon another.

Be sure to package and transport the HDDs correctly.

1.6.2 Handling an HDD in the stand-alone status

• When handling an HDD on a hard workbench, place an antistatic mat (rubber sheet) or similar object on the hard surface (to prevent any impacts occurring between the HDD and bench).

• Do not stack the HDDs one upon another.

• Do not knock an HDD with a hard object (such as a screwdriver).

• Do not place an HDD on its side panel without using a support (do not place an HDD in an unstable position).

1.6.3 Handling the installation of an HDD

• Place antistatic mats or similar sheets on all of the surfaces on which work is conducted or when the HDD is transported.

• Do not permit the HDD to knock against the set's brackets.

• When screwing the brackets, be careful not to knock the HDD. When using a power screwdriver, use a low-shock model and arrange the tightening torque properly.

• When mounting an HDD in a main body, take care not to apply excessive force to the brackets.

(No.YD027)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.YD027)

+ 12 hidden pages