JVC RX-5001VGD Service Manual

SERVICE MANUAL

AUDIO/VIDEO CONTROL RECEIVER

RX-5000VBK

RX-5001VGD

UF US

RX-5000VBK RX-5001VGD

Area Suffix

China

Singapore

POWER

VCR

AUDIO

TAPE/MD

SURROUND

TESTDELAY

321

EFFECT

FM/AM

– CENTER +

VCR

– REAR•L +

7/P

SOUND

DVD

CONTROL

– REAR•R +

+10

ENT

DVD MULTI

CD-DISC

TV VOL.

PHONO

ONE TOUCH OPERATION

VOLUME

MUTING

SLEEP

4 1

RM-SR558U REMOTE CONTROL

–

TV CH–TV/VIDEO

VCR CH

–

4 1

RX-5000V AUDIO/VIDEO CONTROL RECEIVER

STANDBY

POWER

SPEAKERS

PHONES

DVD MULTICDDVD

PHONO

OFF_ ON

Contents

Safety precautions ---------------- 1-2 Disassembly method ------------- 1-3 Adjustment method --------------- 1-5

MASTER VOLUME

– +

ADJUSTBASS BOOST

SETTING

VCR

SURROUND MULTI CURSOR

ONE TOUCH OPERATION

TAPE/MD

SOURCE NAME

INPUT ATT.

MEMORY

Description of major ICs --------- 1-6 Internal connections for FL display tube ----- 1-15

No.20883

Nov. 2000

RX-5000VBK/RX-5001VGD

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 manufacturer`s warranty and will further relieve the manufacture of responsibility for personal injury or proper ty damage resulting therefrom.

3. Many electrical and mechanical par ts 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 or iginal 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 eachexposed metal part, par ticularly 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.

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.

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.

1-2

CAUTION

RX-5000VBK/RX-5001VGD

Disassembly method

Removing the top cover (See Fig.1)

1. Remove 4 screws "A" on both sides of the top cover and 3 screws "B" on the rear side.

2. Lift the back of the top cover spreading both sides to remove.

Removing the front panel assembly (See Fig.2,3)

1. Remove the top cover.

2. Remove 4 screws "C" on the bottom side and 3 screws "D" on the top side.

3. Disconnect the wire CN811 on the main board.

4. Disconnect the wire CN314 on the audio & source selector board.

5. Remove the front panel assembly.

Removing the rear panel (See Fig.4)

1. Remove the top cover.

2. Remove 21 screws "E" on the rear panel.

3. Remove 3 screws "F" on the rear panel.

4. Remove the power cord stopper up side.

5. Remove the rear panel.

Removing the tuner board and video board (See Fig.5)

1. Remove the rear panel.

2. Remove 1 screw "G" on the video board

3. Disconnect the connector CN311 on the video board

4. Disconnect the connector CN111 on the audio & source selector board.

A 2

Fig.1

C C

Fig.2

BOTTOM COVER

Fig.4

Power cord Stopper

CN311

VIDEO board

Fig.5

Audio & source selector board

Tuner board

CN111

Fig.3

CN811

CN314

Main

board

Audio & source selector board

1-3

RX-5000VBK/RX-5001VGD

Removing the audio & source selector

board (See Fig.6)

1. Remove the rear panel.

2. Remove the video board and Tuner board.

3. Disconnect the connector CN512 and CN619 on the audio & source selector board.

4. Disconnect to the card wire CN314 on the audio & source selector board.

5. Disconnect the connector CN712 on the AMP board.

6. Each tie band is cut out.

7. Pullout the connection board.

8. Remove 4 screws "H" on the audio & source selector board.

9. Remove the audio & source selector board.

Removing the main board (See Fig.6 to 8)

CN712

Audio & source

selector board

CN619

CN512

H CN314

Connection board

Fig.6

Main

CN511

PCB

(Standing substrate)

Audio & source selector board

1. Remove the rear panel and front panel assembly.

2. Pull out the pre AMP board and connection board.

3. Remove 8 screws "I" on the main board.

4. Remove 8 screws "J" on the power transistor.

5. Disconnect the connector CN511 and wire CN831 on the main board.

6. Each tie band is cut out.

7. Remove 2 screws "K" on push switch of the front side.

8. Remove nut on terminal of the headphone.

9. The solder of the wire connected with the transformer is removed.

10. Remove the main board.

Removing the front board (See Fig.9)

Solder

Pre AMP board (Standing substrate)

Solder

Headphone jack

Fig.7

NUT

CN831

Connection board

Fig.8

1. Remove the top cover.

2. Remove the Front panel assembly.

3. Remove the master volume knob and nut.

4. Remove the 13 screws "L" on the Front board.

1-4

Fig.9

Adjustment method

TUNER SECTION

1.Tuner range FM 87.5MHz~108.0MHz AM(MW) 530kHz~1710kHz

POWER AMPLIFIER SECTION

RX-5000VBK/RX-5001VGD

VR742

Rch

Lch

TP001

VR741

IDLING CURRENT

1.Set the volume control to minimum during this adjustment.

2.Set the surround mode OFF.

2.Turn VR741 and VR742 fully counterclockwise to warm up before adjustment. If the heat sink is already warm from previous use the correct adjustment can not be made.

3.For L-ch,connect a DC voltmeter between TP001's pin1 and pin2 (Lch) And,connect it between pin3 and pin4(Rch).

4.30 minutes later after power on, adjust VR741 for L-ch, or VR742 for R-ch so that the DC voltmeter value has 1mV~10mV.

4 3 2 1

TP001

1-5

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