JVC RXDV-3-SL Service manual

SERVICE MANUAL

HOME THEATER DVD/CD RECEIVER

RX-DV3SL

Area suffix J -------------------- U.S.A.

RX-DV3SL

REMOTE CONTROL RM-SRXDV3J

STANDBY/ON

VCRDBS TV AUDIO

TAPETV CDR FM/AM

VCRDBS DVD

/FF

TV/VIDEO REW/ TUNING

REPEAT SLEEP

FM MODE STROBE

– TV/DBS CH +

CENTER

EFFECT

SOUND

231

ANALOG

TEST

REAR·L

/DIGITAL

INPUT

564

REAR·R

SURR ON/OFF

AUDIO

897

SUBTITLE

–

SUBWOOFER

SURR MODE

VFP

10/0 +10

100+ TV RETURN

PROGRESSIVE

DIMMER

ANGLE

+–+

TV VOL VOLUME

MUTING

ZOOM

–

DIGEST TOP MENU MENU

CHOICE

ENTER

ON SCREEN

RETURN

HOME THEATER

DVD/CD RECEIVER

Contents

Safety precautions -------------------------------------------------------Importance administering point on the safety ---------------------Preventing static electricity ---------------------------------------------Disassembly method -----------------------------------------------------Adjustment method ------------------------------------------------------Description of major ICs -------------------------------------------------

STANDBY/ON

STANDBY

INPUT

SURROUND

ON/OFF

MODE

ANALOG/DIGITA

INPUT ATT. REC MODE

RX-DV3 HOME THEATER DVD/CD RECEIVER

TVVCRDBSDVD

SOURCE NAME

FM/AMTAPE/CDR

SETTING ADJUST MEMORY

MASTER VOLUME

CONTROL

DVD/SUPER VCD/VCD/CD

COMPACT

SUPER VIDEO

1-2 1-3 1-4 1-5 1-14 1-16~26

No.21124

Jul. 2002

RX-DV3SL

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 manufacturer`s 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 re-assembling.

5. Leakage currnet check (Electrical shock hazard testing) After re-assembling 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, 1,000 ohms per volt or more sensitivity in the following manner. Connect a 1,500 10W resistor paralleled by a 0.15 F AC-type capacitor between an exposed 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 meausre 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.).

0.15 F AC TYPE

1500 10W

Good earth ground

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

Place this probe on each exposed metal part.

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 m ust 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.

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.

In regard with component parts appearing on the silk-screen pr inted 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.

(This regulation does not correspond to J and C version.)

1-2

Importance administering point on the safety

LVA10332-A2

5A-125V

Primary part

F 101

5A-125V

RX-DV3SL

Secondary parts

F 132

2A-125V

F 131

2A-125V

LVA10330-1

Caution: For continued protection against risk of fire, replace only with same type 5A/125V for F101, 2A/125V for F202 and F203. This symbol specifies type of fast operating fuse.

Precaution: Pour eviter risques de feux, remplacez le fusible de surete de F101 comme le meme type que 5A/125V, et 2A/125V pour F131 et F132. Ce sont des fusibles suretes qui functionnes rapide.

1-3

RX-DV3SL

Preventing static electricity

1. Grounding to prevent damage by static electricity

Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.

2. About the earth processing for the destruction prevention by static electricity

In the equipment which uses optical pick-up (laser diode), optical pick-up is destroyed by the static electricity of the work environment. Be careful to use proper grounding in the area where repairs are being performed.

2-1 Ground the workbench

Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the traverse unit (optical pickup) on it.

2-2 Ground yourself

Use an anti-static wrist strap to release any static electricity built up in your body.

(caption) Anti-static wrist strap

Conductive material (conductive sheet) or iron plate

3. Handling the optical pickup

1. In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical pickup are shorted. After replacement, return the shorted parts to their original condition. (Refer to the text.)

2. Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily destroy the laser diode.

4. Handling the traverse unit (optical pickup)

1. Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.

2. Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a time when attaching it to the connector.

3. Handle the flexible cable carefully as it may break when subjected to strong force.

4. It is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.

Attention when traverse unit is decomposed

Because the DVD/ CD mechanism assembly of this model is a unit component, the individual component parts consisting of the DVD / CD mechanism assembly are not supplied separately. If you need to decompose the traverse unit, short-circuit the connector of the flexible board by using a metal clip and the like prior to decomposing the traverse unit.

DVD / CD unit

Card wire

Fig.1

DVD / CD holder mechanism

1-4

Soldering points

Fig.2

Pickup unit connector

RX-DV3SL

Disassembly method

Removing the top cover (See Fig.1)

Remove the four screws marked A attaching the top cover on both sides of the body.

Remove the three screws marked B on the back of the body.

3. Remove the top cover from behind in the direction of

Removing the front panel assembly

(See Fig.2 to 4)

Prior to performing the following procedures, remove the top cover.

Disconnect the card wire from the connector CN114 on the main board.

Remove the five screws marked C attaching the front panel assembly on the bottom of the body. Detach the front panel assembly toward the front.

Tie band

Power

supply

board

CN201

Power

/Fuse

board

Top cover

Fig.1

Front panel assembly

CN114

Main

board

Amplifier board

DSP board

Fig.2

Release the two joints marked a on both sides on the bottom of the body using a screwdriver.

Joint a

Fig.4

Removing the rear panel (See Fig.5)

Prior to performing the following procedures, remove the top cover.

Remove the power cord stopper from the rear panel by moving it in the direction of the arrow.

Rear panel

Fig.3

Cord stopper

Front panel assembly

Remove the twenty one screws marked D attaching each boards to the rear panel on the back of the body.

Remove the three screws marked E attaching the rear panel on the back of the body.

Fig.5

1-5

RX-DV3SL

Removing each board connected to the rear side of the main board

(See Fig.6 to 10)

Prior to performing the following procedures, remove the top cover and rear panel.

Cut off the tie band fixing the harness.

Disconnect the DSP board from the connector CN612 on the main board,

Disconnect the card wire frome the connecter CN614 on the main board.

Disconnect the S-video board from the connector CN412 on the main board.

Tie band

Amplifier board

CN201 CN212

CN602

DSP

board

CN612

CN231 CN241

Amplifier board

Fig.6

CN212

DSP board

CN231

CN241

CN231

Amplifier board

Fig.9

Front panel assembly

CN212

CN612

S-video

board

CN212

board

CN231

Tuner

Amplifier board

S-video

board

Fig.7

CN602

CN612

CN412

DSP

board

CN612 S-video

board

1-6

CN241

Power

/Fuse

board

Main

board

Fig.10

CN612

CN412

Tuner

board

CN241

CN212

Fig.8

Removing the amplifier board (See Fig.11, 12)

Prior to performing the following procedures, remove the top cover, and rear panel.

Disconnect the amplifier board from the connector CN201.

Disconnect the amplifier board from the connector CN212 on the main board.

Disconnect the amplifier board from the wire connected to the connector CN231 and CN241 on the main board.

Disconnect the screws marked F frome the ground wire attaching the amplifier board on the fan bracket.

Disconnect the four screws G attaching the amplifier board on the body.

Tie band

Fig.11

RX-DV3SL

CN201 CN212

CN602

DSP

board

CN612

CN231 CN241

Amplifier board

CN212

Removing the power ICs (See Fig.13, 14)

Remove the six screws marked H attaching the heat sink.

Unsolder the two p the rear side of the amplifier board.

Pull out the amplifier board from the bracket hooks on the heat sink.

ower ICs solder points

attaching

Heat sink

Amplifier board

Fig.12

Fig.13

Power ICs solder points

CN231 CN241

Main

board

Fook

Amplifier board

rear side

Fook

Heat sink

Fig.14

1-7

RX-DV3SL

Removing the DVD CD unit

(See Fig.15)

Prior to performing the following procedures, remove the top cover, rear cover and DSP board.

Remove the DVD / CD unit dust proof cover attaching on the main board.

Remove the three screws marked I attaching the DVD /CD unit.

Disconnect the connectors CN512 and CN513 on the main board.

Removing the fan bracket

(See Fig.16)

Prior to performing the following procedures, remove the top cover, rear cover, DSP board, amplifier board and S-video board.

Tie band

Dust proof cover

DVD / CD unit

I I

CN512

CN513

Main

board

Fig.15

Harness bands

If necessary, cut off the tie band fixing the harness.

Remove the two screws marked J attaching the fan bracket on the body.

Remove the harness bands fixing the harness on the fan bracket.

Disconnect the connector CN111 on the power supply board.

Disconnect the connector CN122 on the main board.

Removing the power supply board

(See Fig.17)

Prior to performing the following procedures, remove the top cover, rear cover, DSP board, amplifier board S-video board and fan bracket.

If necessary, cut off the tie band fixing the harness.

Disconnect the card wire from the connector CN115 on the power supply board.

Disconnect the harness connected to the connector CN111 on the power supply board.

Power supply board

Fan bracket

Power supply board

Solder

points

CN115 CN121

CN111 CN122

Main board

Fig.16

CN115 CN121 CN111

CN122

Disconnect the harness connected to the connector CN121 on the main board.

Remove the four screws marked K attaching the power supply board on the body.

Unsolder the solder points at the three harnesses connected to the power supply board.

1-8

Tie band

Fig.17

RX-DV3SL

Removing the power transformer

(See Fig.18, 19)

Prior to performing the following procedures, remove the top cover and rear panel.

If necessary, cut off the tie band fixing the harness.

Disconnect the harness from the connector CN101 on the power / fuse board.

Disconnect the harness from the connectors CN111 and CN121 on the power supply board and main board.

Unsolder the three harnesses connected to the power supply board.

Remove the four screws marked L attaching the power transformer on the body.

Removing the power / fuse board

(See Fig.19)

Prior to performing the following procedure, remove the top cover and rear panel.

Disconnect the harness connected to the connector CN101 on the power / fuse board (If necessary, cut off the band fixing the harness on the side of the base chassis).

Unsolder the power cord and other harnesses connected to the power / fuse board.

Remove the two screws marked M attaching the power / fuse board on the body.

Power supply board

Solder

points

Tie band

Power / Fuse board

PW103 PW102

Power cord

CN115

CN291

CN121 CN111 CN122

Amp. board

Power transformer

Fig.18

Power transforme

CN101

PW101

Solder

points

Power / Fuse board

Fig.19

Removing the headphones board

(See Fig.20)

Prior to performing the following procedures, remove the top cover, rear cover, front panel assembly and power supply board.

Disconnect the harness connected to the connector CN291 on the main board (If necessary, remove the amplifier board and fan bracket).

Remove the screw marked N attaching the headphones board on the body.

Main board

CN291

Headphones

board

Headphones

jack

Fig.20

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+ 19 hidden pages