JVC RXV-7000-UF Service manual

SERVICE MANUAL

AUDIO/VIDEO CONTROL RECEIVER

MB50220061

RX-V7000UF

Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)

TABLE OF CONTENTS

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

2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4

3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

COPYRIGHT © 2006 Victor Company of Japan, Limited

No.MB502

2006/1

SPECIFICATION

Amplifier

Output Power At Stereo operation Front channels 100 W per channel, min. RMS, driven into 8

with no more than 0.8% total harmonic distortion
(IEC268-3/DIN).

Front channels 100 W per channel, min. RMS, driven into 8

with no more than 0.8% total harmonic distortion.

At Surround operation Center channel 100 W, min. RMS, driven into 8

than 0.8% total harmonic distortion.

Surround channels 100 W per channel, min. RMS, driven into 8

with no more than 0.8% total harmonic distortion.

Audio Audio Input Sensitivity/Impedance (1 kHz) TAPE, VCR, TV SOUND/DBS, DVD:220 mV/47 k

Audio Input (DIGITAL IN)* Coaxial DIGITAL 1 (DVD):0.5 V(p-p)/75 Ω

Optical DIGITAL 2 (VCR), DIGITAL 3 (TV SOUND/DBS):-21

dBm to -15 dBm (660 nm ±30 nm)

Recording Output Level TAPE, VCR:220 mV

Signal-to-Noise Ratio ('66 IHF/DIN) TAPE, VCR, TV SOUND/DBS, DVD:96 dB/62 dB

Frequency Response (8

Bass Boost +4 dB ±1 dB at 100 Hz

Equalization (5 bands) 63 Hz, 250 Hz, 1 kHz, 4 kHz, 16 kHz:±8 dB (in 2 dB

Video Video Input Sensitivity/Impedance Composite video:DVD, VCR, DBS 1 V(p-p)/75

Video Output Level Composite video:VCR, MONITOR OUT 1 V(p-p)/75 Ω

Synchronization Negative

Signal-to-Noise Ratio 45 dB

Tuning Range 87.50 MHz to 108.00 MHz

Usable Sensitivity Monaural:12.8 dBf (1.2

50 dB Quieting Sensitivity Monaural:16.0 dBf (1.7

Stereo Separation at OUT (REC) 35 dB at 1 kHz

Ω) TAPE, VCR, TV SOUND/DBS, DVD:20 Hz to 50 kHz (+1

dB, -3 dB)

steps)

Ω

S-video:DVD, VCR,DBS (Y: luminance):1 V(p-p)/75 Ω

(C: chrominance, burst):0.3 V(p-p)/75 Ω

Component:DVD, VCR (Y: luminance):1 V(p-p)/75 Ω

(PB, PR):0.7 V(p-p)/75 Ω

S-video:VCR, MONITOR OUT (Y: luminance):1 V(p-p)/75 Ω

Component:MONITOR OUT (Y: luminance):1 V(p-p)/75 Ω

FM tuner (IHF)

(C: chrominance, burst)0.3 V(p-p)/75 Ω

(PB, PR):0.7 V(p-p)/75 Ω

Stereo:37.5 dBf (20.5

µV/75 Ω)

Ω, at 1 kHz with no more

µV/75 Ω)
µV/75 Ω)

Ω, at 1 kHz

Ω, at 1 kHz

Ω, at 1 kHz

Ω

AM tuner

Tuning Range 531 kHz to 1 710 kHz (at 9 kHz intervals)

General

Power Requirements AC 220 V, 50 Hz

Power Consumption 200 W (at operation)

Dimensions (W

Mass 11.4 kg

× H × D) 435 mm × 200 mm × 425 mm

530 kHz to 1 710 kHz (at 10 kHz intervals)

0.9 W (in standby mode)

* : Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency -32 kHz, 44.1 kHz, 48 kHz)

Designs and Specifications are subject to change without notice.

1-2 (No.MB502)

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.MB502)1-3

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-4 (No.MB502)

SECTION 3

DISASSEMBLY

3.1 Removing the top cover (See Fig.1)

(1) From the right and left sides of the main body, remove the

four screws A attaching the top cover.

(2) From the top side of the main body, remove the six screws

A' attaching the top cover.

(3) From the back side of the main body, remove the six

screws B attaching the top cover.

(4) Remove the top cover in the direction of the arrow 2 while

extending the lower sections of the top cover in the direc­tion of the arrow 1.

Top cover

A'

A'

2

1

1

B

A

Fig.1

(No.MB502)1-5

3.2 Removing the front panel assembly (See Figs.2 and 3)

• Prior to performing the following procedure, remove the top

cover.
(1) From the top side of the main body, disconnect the card

wire from the connector CN402
Fig.2)

(2) Disconnect the card wire from the connector CN201

power supply board. (See Fig.2)

(3) Remove the wire protection board fixing the card wire. (See

Fig.2)

(4) Remove the four screws C attaching the front panel as-

sembly. (See Fig.2)

(5) Remove the four screws D attaching the stay bracket. (See

Fig.2)

(6) From the bottom side of the main body, remove the four

screws E attaching the front panel assembly. (See Fig.3)

(7) Remove the front panel assembly in the direction of the ar-

row. (See Fig.3)

on the front board. (See

on the

Front panel assembly

CD D

Wire
protection
board

CN402

C

C

CN201

Front board

Stay bracket

E

D

Fig.2

Power supply board

Front panel assembly

E

1-6 (No.MB502)

Fig.3

3.3 Removing the rear panel (See Fig.4)

• Prior to performing the following procedure, remove the top

cover and stay bracket.
(1) From the back side of the main body, remove the strain re-

lief from the rear panel in the direction of the arrow.

(2) Remove the thirty screws F attaching the rear panel.

F

Strain relief

F

3.4 Removing the component board and tuner unit (See Figs.5 and 6)

• Prior to performing the following procedure, remove the top

cover and stay bracket.
(1) From the top side of the main body, disconnect the parallel

wire from the connector CN511
Fig.5)

(2) From the back side of the main body, remove the four

screws G attaching the component board. (See Fig.6)

(3) From the top side of the main body, disconnect the card

wire from the connector CN1

(4) From the back side of the main body, remove the two

screws H attaching the tuner unit. (See Fig.6)

on the S-video board. (See

on the tuner unit. (See Fig.5)

Rear panel

S-Video board

Fig.4

CN511

Tuner

F

CN1

Component board

Fig.5

HG

Rear panel

Fig.6

(No.MB502)1-7

3.5 Removing the DSP board, audio input board, DVD board and video board (See Fig.7)

• Prior to performing the following procedure, remove the top

cover, stay bracket and rear panel.
(1) From the top side of the main body, disconnect the DSP

board from the connector CN481

(2) Disconnect the audio input board from the connector

on the front board.

CN421

(3) Disconnect the DVD board from the connector CN431 on

the front board.

(4) Disconnect the video board from the connector CN441

the front board.

on the front board.

on

CN481

DSP
board

Video board

Front boardDVD board

3.6 Removing the S-video board (See Fig.8)

• Prior to performing the following procedure, remove the top

cover, stay bracket and rear panel.
(1) From the top side of the main body, disconnect the parallel

wire from the connector CN511

(2) Disconnect the S-video board from the connector CN461

on the front board.

on the S-video board.

CN421

Audio input board

Front board

CN461

CN431

Fig.7

CN511

Fig.8

CN441

S-Video board

1-8 (No.MB502)

3.7 Removing the front board (See Fig.9)

• Prior to performing the following procedure, remove the top

cover, rear panel, stay bracket, component video board, DSP
board, audio input board, DVD board, video board, S-video
board and tuner unit.
(1) From the top side of the main body, disconnect the card

wire from the connector CN402

(2) Disconnect the relay board from the connector CN491 on

the front board.

(3) Disconnect the wires from the connectors CN471

and CN473 on the front board.

(4) Remove the three screws J attaching the front board.
(5) Loosen the screw K attaching the front board.

on the front board.

, CN472

J

Front board

J

Reray board

K

3.8 Removing the speaker terminal board (See Fig.10)

• Prior to performing the following procedure, remove the top

cover, stay bracket, component board and rear panel.
(1) From the top side of the main body, remove the solders

from the soldered sections a on the speaker terminal
board.

CN402

Speaker terminal board

CN471

CN473

CN472 CN491

Fig.9

Fig.10

Soldered sections a

(No.MB502)1-9

3.9 Removing the main board (See Fig.11)

• Prior to performing the following procedure, remove the top

cover and stay bracket.
(1) From the top side of the main body, remove the solders

from the soldered section b on the speaker terminal board
attaching the parallel wires.

(2) Disconnect the relay board from the connectors CN291

and CN491 on the power supply board and front board.

(3) Disconnect the parallel wire from the connector CN241

the power supply board.

(4) Disconnect the wire from the connector CN251

er transformer board 1.

(5) Disconnect the wires from the connectors CN471

and CN473 on the front board.

(6) Remove the screw M, two screws N and four screws P at-

taching the main board.

on the pow-

on

, CN472

Wire
protection
board

P
N

M

P

Main
board

Relay
board

P

Power
transformer
board 1

CN241

Power
supply
board

CN251
CN291

N

3.10 Removing the heat sink (See Figs.12 and 13)

• Prior to performing the following procedure, remove the top

cover, stay bracket and main board.
(1) Remove the ten screws Q attaching the heat sink of the

main board. (See Fig.12)

(2) From the reverse side of the main board, remove the two

screws R attaching the heat sink. (See Fig.13)

CN473

Front

board

Heat sink

Main board

CN472

CN471

CN491

Fig.11

Fig.12

Soldered
section b

Heat sink

Speaker
terminal

board

Q

Q

1-10 (No.MB502)

R

R

Main board

Fig.13

3.11 Removing the center amp. board, front amp. boards (L/R) and rear amp. boards (L/R)

r

(See Figs.12 and 14)

• Prior to performing the following procedure, remove the top
cover, stay bracket and main board.
(1) Remove the ten screws Q attaching the heat sink of the

main board. (See Fig.12)

(2) Disconnect the center amp. board from the connector

on the main board. (See Fig.14)

CN321

(3) Disconnect the front amp. board (L) from the connector

on the main board. (See Fig.14)

CN311

(4) Disconnect the front amp. board (R) from the connector

on the main board. (See Fig.14)

CN312

(5) Disconnect the rear amp. board (L) from the connector

on the main board. (See Fig.14)

CN331

(6) Disconnect the rear amp. board (R) from the connector

on the main board. (See Fig.14)

CN332

3.12 Removing the power transformer

(See Fig.15)

• Prior to performing the following procedure, remove the top
cover and stay bracket.
(1) From the top side of the main body, remove the solders

from the soldered section c on the power transformer
board 1.

(2) Remove the solders from the soldered sections d on the

power transformer board 2.

(3) Disconnect the wire from the connector CN251

er transformer board 1.

(4) Remove the four screws S attaching the power transform-

er.

on the pow-

Rear amp.

Power transformer board 1

Rear amp.

board (L)

Front amp.

board (R)

CN332 CN331 CN312 CN311 CN321

board (R)

Front amp.

board (L)

Center amp.

board

Main board

Fig.14

CN251

Soldered
section c

3.13 Removing the power/fuse board

(See Fig.15)

• Prior to performing the following procedure, remove the top
cover and stay bracket.
(1) From the back and top sides of the main body, remove the

screw T and screw U attaching the power/fuse board.

(2) Remove the solders from the soldered sections e attaching

the power cord.

(3) From the reverse side of the power/fuse board, remove the

solders from the soldered sections f attaching the wires.

3.14 Removing the power supply board

(See Fig.16)

• Prior to performing the following procedure, remove the top
cover and stay bracket.
(1) From the top side of the main body, disconnect the parallel

wires from the connectors CN203
supply board.

(2) Disconnect the card wire from the connector CN201

power supply board.

and CN241 on the power

on the

S

S

Soldered

sections d

Power cord

Fig.15

(3) Disconnect the relay board from the connector CN291

the power supply board.

(4) Disconnect the parallel wire from the connector CN101

the headphone jack board.

(5) Remove the solders from the soldered section c on the

power transformer board 1.

T

Soldered

sections e

S

Power

transformer

S

Power
transforme

U

board 2

Soldered

sections f

Power/Fuse

board

on

on

(No.MB502)1-11

(6) Remove the two screws V and the screw W attaching the

power supply board.

(7) Remove the power supply board from the hook g of the

chassis base bracket in the direction of the arrow, take out
the power supply board.

(8) Turn over the power supply board, remove the solders from

the soldered sections h attaching the wires.

CN241

V

Power supply board

CN201

Headphone jack
board

CN101

3.15 Removing the headphone jack board (See Fig.17)

• Prior to performing the following procedure, remove the top

cover, stay bracket and front panel assembly.
(1) From the top side of the main body, disconnect the parallel

wire from the connector CN101
board.

(2) From the front side of the main body, remove the nut and

screw X attaching the bracket (phones) to the chassis
base.

on the headphone jack

CN203

CN291

Relay
board

Hook g of the
chassis base bracket

CN101

Nut

V

Soldered
section h

W

Soldered
section c

Power transformer board 1

Fig.16

Headphone jack board

H.P Bracket

1-12 (No.MB502)

X

X

Chassis base

Fig.17

3.16 Removing the system control board (See Fig.18)

• Prior to performing the following procedure, remove the top

cover, stay bracket and front panel assembly.
(1) From the back side of the front panel assembly, remove the

seven screws Y attaching the system control board.

(2) Disconnect the parallel wires from the connectors CN705

and CN714 on the volume board, jog board and

CN707

power switch board.

(3) Disconnect the wire from the connector CN706

switch board.

on the

Volume board

AA

,

Jog board

CN705

Switch board

AB

CN706

CN714

Z

CN707

System control board

3.17 Removing the jog board, volume board, power switch board and switch board (See Figs. 18 and 19)

• Prior to performing the following procedure, remove the top

cover, stay bracket, front panel assembly and system control
board.
(1) From the back side of the front panel assembly, remove the

two screws Z attaching the power switch board. (See
Fig.18)

(2) Remove the four screws AA attaching the jog board. (See

Fig.18)

(3) Remove the three screws AB attaching the volume board.

(See Fig.18)

(4) Remove the two screws AC attaching the switch board.

(See Fig.18)

(5) Pull out the volume and jog knobs from the front side of the

front panel assembly, remove the nut attaching the front
panel assembly. (See Fig.19)

Nut Volume knob

YY

Fig.18

Front panel assembly

Fig.19

AC

Power switch board

Jog knob

(No.MB502)1-13

SECTION 4

ADJUSTMENT

This service manual does not describe ADJUSTMENT.

1-14 (No.MB502)

SECTION 5

TROUBLESHOOTING

This service manual does not describe TROUBLESHOOTING.

(No.MB502)1-15

Victor Company of Japan, Limited
Audio/Video Systems Category 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.MB502)

Printed in Japan

VPT