JVC RXDP-20-VBK Service manual

SERVICE MANUAL

AUDIO/VIDEO CONTROL RECEIVER

2200820037

RX-DP20VBK

TRANSMITLEARN

STANDBY

ON

ZONE 2

ZONE 1

ZONE 1

ZONE 2

TV/CATV/DBS

VCR 1

ON/OFF ON/OFF

STANDBY/ON STANDBY/ON

ZONE 2 LEARNZONE 1

DVD

DVD MULTI

CD

PHONO

CDR

TAPE/MD

VCR 1 VCR 2

EXT 7.1CH

FM/AMVIDEOTV/DBS

ANALOG/DIGITAL

EFFECT

INPUT

123

LIVENESS

SOUND

456

TEST

/P

89

7

STANDBY

STANDBY/ON

MASTER VOLUME

CC CONVERTER

ZONE 1
ON/OFF

ZONE 2
ON/OFF

PHONES

RX-DP20V

AUDIO/VIDEO CONTROL RECEIVER

DIMMER

DOOR

UP

DOOR

DOWN

VIDEO LÑAUDIOÑR

S-VIDEODIGITAL

VIDEO

CC CONVERTER

RETURN

THX

EX/ES/7.1

SLEEP DIMMER

/ REW

DOWN UP

REC

CHANNEL

TV VOL

SETUP
MENU

TEXT

DISPLAY

DVD

MENU

RM-SRXDP20J

A/V CONTROL RECEIVER

10

PLAY

TUNING

STOP PAUSE

TV/VIDEO

MUTING

SET

LIGHT

FM MODE

DSP SURR/DSPSURROUND

ANALOG DIRECT

REMOTE CONTROL

+

100

+

100

OFF

TV

CATV/
DBS

FF/

VOLUME

ADJUST
MENU

EXIT

Area Suffix

J --------------- U.S.A.

C ------------- Canada

TABLE OF CONTENTS

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

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

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

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18

5 TROUBLE SHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED

No.22008

2003/7

SPECIFICATION

Amplifier Output Power At Stereo operation

(Analog Direct On)

At Surround operation
(Analog Direct On)

Audio Audio Input

Sensitivity
/Impedance
(1 kHz)

Video Video Input

Sensitivity
/Impedance

Video Output
Level

PHONO IN (MC) 0.25 mV/100 Ω
(MM) 2.5 mV/47 kΩ
CD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN 200 mV/47 kΩ
DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO 200 mV/47 kΩ
Audio Input

(DIGITAL IN)*
* Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround

(with sampling frequency - 32 kHz, 44.1 kHz, 48 kHz)
Audio Output Level ZONE 2 PREOUT 200 mV

Recording Output
Level

Digital output Optical DIGITAL OUT
Signal wave length 660 nm
Output level
Signal-to-Noise Ratio
(‘66 IHF/’78 IHF)

(Analog Direct On)
CD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN 92 dB/80 dB
DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO 92 dB/80 dB
Frequency Response

(8 Ω)
CD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN 10 Hz to 100 kHz (+1 dB, -3 dB)

DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO 10 Hz to 100 kHz (+1 dB, -3 dB)
RIAA Phono Equalization ±1.0 dB (20 Hz to 20 kHz)
Composite video
DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO
S-video

DVD IN, VCR 1 IN, VCR 2 IN, TV
SOUND/DBS IN, VIDEO

Component
1 IN (DVD), 2 IN,3 IN

Composite video
VCR 1 OUT,VCR 2 OUT,MONITOR OUT
S-video
VCR 1 OUT, VCR 2 OUT, MON­ITOR OUT
Component
MONITOR OUT

Synchronization Negative
Signal-to-Noise Ratio 45 dB

Front channels
120 W per channel, min. RMS, driven into 8 Ω, 20 Hz to 20 kHz with no more
than 0.02% total harmonic distortion. 120 W per channel, min. RMS, driven
into 4 Ω, 20 Hz to 20 kHz with no more than 0.07% total harmonic distortion.

Front channels
120 W per channel, min. RMS, driven into 8 Ω, 20 Hz to 20 kHz with no more
than 0.02% total harmonic distortion.

Center channel
120 W, min. RMS, driven into 8 Ω, 20 Hz to 20 kHz with no more than 0.02%
total harmonic distortion.

Surround channels
120 W per channel, min. RMS, driven into 8 Ω, 20 Hz to 20 kHz with no more
than 0.02% total harmonic distortion.
Surround back channels
120 W per channel, min. RMS, driven into 8 Ω, 20 Hz to 20 kHz with no more
than 0.02% total harmonic distortion.

Coaxial 1(DVD), 2(CD), 3(TV/DBS) 0.5 V(p-p)/75 Ω
Optical 4(CDR), 5(MD), 6(VCR1) -21 dBm to -15 dBm (660 nm ±30 nm)

PREOUT 1 V
TAPE/MD OUT, CDR OUT, VCR 1

OUT, VCR 2 OUT

PHONO IN (MC) 60 dB/72 dB (at REC OUT)
(MM) 72 dB/80 dB (at REC OUT)

PHONO IN (MC) 20 Hz to 20 kHz (±1 dB)
(MM) 20 Hz to 20 kHz (±1 dB)

(Y: luminance) 1 V(p-p)/75Ω
(C: chrominance, burst) 0.286 V(p-p)/75 Ω

(Y: luminance) 1 V(p-p)/75 Ω
(PB, PR) 0.7 V(p-p)/75 Ω

(Y: luminance) 1 V(p-p)/75Ω
(C: chrominance, burst) 0.286 V(p-p)/75 Ω

(Y: luminance) 1 V(p-p)/75 Ω

200 mV

1 V(p-p)/75 Ω

1 V(p-p)/75 Ω

(PB, PR): 0.7 V(p-p)/75 Ω

1-2 (No.22008)

FM tuner
(IHF)

AM tuner Tuning Range 530 kHz to 1 710 kHz

General Power Requirements AC 120V~, 60 Hz

Designs & specifications are subject to change without notice.

Tuning Range 87.5 MHz to 108.0 MHz
Usable Sensitivity Monaural 12.8 dBf (1.2 µV/75 Ω)
50 dB Quieting Sensitivity Monaural 18.2 dBf (2.2 µV/75 Ω)
Stereo 38.2 dBf (22.3 µV/75 Ω)
Signal-to-Noise Ratio (IHF-A weighted) Monaural 78 dB at 85 dBf
Stereo 73 dB at 85 dBf
Total Harmonic Distortion Monaural 0.2% at 1 kHz
Stereo 0.3% at 1 kHz
Stereo Separation at REC OUT 40 dB at 1 kHz
Alternate Channel Selectivity 60 dB (±400 kHz)
Frequency Response 30 Hz to 15 kHz (+0.5 dB, -3 dB)

Usable Sensitivity Loop antenna: 400 µV/m
Signal-to-Noise Ratio 50 dB (100 mV/m)

Power Consumption 580 W/690 VA (at operation)

2.7 watts (in standby mode)
Dimensions (W × H × D) 445 mm × 177 mm × 475 mm

(17 9/16 in. × 7 in. × 18 3/4 in.)

Mass 23.5 kg (52 lbs)

(No.22008)1-3

SECTION 1

Good earth ground

d

AC VOLTMETER

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

1-4 (No.22008)

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 0.5µ
mA AC (r.m.s.).

(Having 1000
ohms/volts,
or more sensitivity)

0.15 F AC TYPE

Place this
probe on

1500 10W

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 expose
metal part.

1.5 Importance administering point on the safety

WR42

WR48

PW26

PW21

PW24

EP21

TW51

C42

R41

R57

Q53

PW25

PW23

PW22

R21

R42

D45

C60

C43

FC41 FC42

C40

C41

D41

Q54

Q55

R51

R54

CN41

D25

RY21

C21

FC22 FC21

WR41

FC43 FC44

CN44 CN45

C56

D50

Q44

Q42

Q43

CN46

D51

C52

C25

D26

Q22

C24

R22

T42

R26

R27

T21

CN25

R28

D22

D21

C22

WR26

Q21

C27

D27

Q23

R24

R23

C26

R25

C23

D24

EP22

D23

CN47

R55

R50

Q41

C59

C51

R47

R46

T41

R56

C55

R49

TH41

C54

D49

D48

R48

C53

R43

Q47

Q45

Q46

IC44

TW41

TW42

C49

R4011

R4012

FC401 FC402

R45

C44

C45

C57 C58

D4004

C47 C48

D4003

D4002

C46

D4001

Caution: For continued protection against risk of
fire, replace only with same type 8A/250V for F21,

0.5A/250V for F41 and 2A/125V for F42 and F43.
This symbol specifies type of fast operating fuse.

Precaution: Pour eviter risques de feux, remplacez
le fusible de surete de F21 comme le meme type
que 8A/250V, et 0.5A/250V pour F41, et 2A/125V
pour F42 et F43.
Ce sont des fusibles suretes qui functionnes rapide.

^

(No.22008)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.22008)

SECTION 3

A

DISASSEMBLY

3.1 Main body section

3.1.1 Removing the top cover
(See Fig.1)

(1) Remove the eight screws A attaching the top cover on both

sides of the body.
(2) Remove the three screws B on back of the body.
(3) Remove the top cover from behind in the direction of the ar-

row while pulling both sides outward.

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

• Prior to performing the following procedure, re move the top

cover.
(1) Cut off the tie band 1 fixing the harness.
(2) Remove the screw a, and remove the lug wire.
(3) Remove the three screws C attaching the front panel as-

sembly.

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

sembly on bottom of the body. Detach the front panel as­sembly toward the front.

(5) Disconnect the harness from the connector CN971

, CN983 and CN985 on the system control bo ard

CN977

(see fig.5), CN973 on the front AV in board and CN373 on
the front DIGITAL board (see 2-3.Front panel assembly
section/ fig.2).

,

(both sides)

a

(fixing the

lug wire)

Audio signal

1 board

CN201

Tie band 3

Top cover

A(both sides)

Fig.1

Front panel assembly

C

B

C

Tie band 1

Harness

band

Y/C separator

board

CN482

CN481

V compo 2 board

D

Tie band 2

CN581

Audio 7.1ch

in board

CN301

Compu
link board

CN1

Tuner unit

CN1

RF remote unit

Fig.2

D

Front panel
assembly

Fig.3

(No.22008)1-7