JVC RX-DP20VSL Service Manual

22019200310

SERVICE MANUAL

AUDIO/VIDEO CONTROL RECEIVER

RX-DP20VSL

DVD

AUDIO

LEARN

TRANSMIT

TV/DBS

VCR 1

LEARN

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

7

/P

89

STANDBY

STANDBY/ON

MASTER VOLUME

CC CONVERTER

RX-DP20V

AUDIO/VIDEO CONTROL RECEIVER

PHONES

DIMMER

DOOR

UP

DOOR

DOWN

VIDEO LÑAUDIOÑR

S-VIDEODIGITAL

VIDEO

CC CONVERTER

10

RETURN

THX

EX/ES/7.1

SLEEP DIMMER

/ REW

PLAY

PTY SEARCH

PTY PTY

REC

CHANNEL

TV VOL

SETUP
MENU

TEXT

DISPLAY

DVD

MENU

RM-SRXDP20R

A/V CONTROL RECEIVER

FM MODE

DSP SURR/DSPSURROUND

ANALOG DIRECT

STOP PAUSE

TV/VIDEO

MUTING

SET

LIGHT

REMOTE CONTROL

+

100

+

100

OFF

TV

CATV/
DBS

FF/

TA/NEWS/INFODISPLAY MODE

VOLUME

ADJUST
MENU

EXIT

Area Suffix

B ------------------------------ U.K.
E ---------- Continental Europe
EN ----------- Northern Europe
EV ------------- Eastern Europe

TABLE OF CONTENTS

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

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

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

4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22

COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED

No.22019

2003/10

SPECIFICATION

Amplifier

Output Power
At Stereo operation

(Analog Direct On)

At Surround operation
(Analog Direct On)

Audio
Audio Input Sensitivity

/Impedance (1 kHz)

Audio Input (DIGITAL IN)* Coaxial 1(DVD), 2(CD), 3(TV/DBS):0.5 V(p-p)/75 Ω

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

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.
130 W per channel, min. RMS, driven into 8 Ω at 1 kHz, with no more than 0.8%
total harmonic distortion. (IEC 268-3/DIN)

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.

PHONO IN (MC):0.25 mV/100 Ω
PHONO IN (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

Optical 4(CDR), 5(MD), 6(VCR1):-21 dBm to -15 dBm (660 nm ±30 nm)

Audio Output Level PREOUT:1 V
Recording Output Level TAPE/MD OUT, CDR OUT, VCR 1 OUT, VCR 2 OUT:200 mV
Digital output
Optical:DIGITAL OUT
Signal-to-Noise Ratio
('66 IHF/'78 IHF)

(Analog Direct On)

Frequency Response
(8 Ω)

RIAA Phono Equalization ±1.0 dB (20 Hz to 20 kHz)
Video
Video Input Sensitivity
/Impedance

Video Output Level Composite video:VCR 1 OUT,VCR 2 OUT,MONITOR OUT 1 V(p-p)/75 Ω

Synchronization Negative
Signal-to-Noise Ratio 45 dB
Tuning Range 87.5 MHz to 108.0 MHz
Usable Sensitivity Monaural:17.0 dBf (1.95 µV/75 Ω)
50 dB Quieting Sensitivity Monaural:21.3 dBf (3.2 µV/75 Ω)

Signal-to-Noise Ratio
(IHF-A weighted)

Signal wave length:660 nm
Output level:-21 dBm to -15 dBm
PHONO IN (MC):60 dB/72 dB (at REC OUT)
PHONO IN (MM):72 dB/80 dB (at REC OUT)
CD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN:92 dB/80 dB
:92 dB/80 dBDVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO
PHONO IN (MC) :20 Hz to 20 kHz (±1 dB)
PHONO IN (MM):20 Hz to 20 kHz (±1 dB)
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)

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 (Y: luminance):1 V(p-p)/75 Ω

S-video:VCR 1 OUT, VCR 2 OUT, MONITOR OUT (Y: luminance):1 V(p-p)/75Ω

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

Stereo:41.3 dBf (31.5 µV/75 Ω)
Monaural:78 dB at 85 dBf
Stereo:73 dB at 85 dBf

1 V(p-p)/75 Ω

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

(PB, PR):0.7 V(p-p)/75 Ω

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

(PB, PR): 0.7 V(p-p)/75 Ω

1-2 (No.22019)

Total Harmonic Distortion Monaural:0.4% at 1 kHz

Stereo:0.6% at 1 kHz

Stereo Separation at REC
OUT

Alternate Channel Selec­tivity
Frequency Response 30 Hz to 15 kHz (+0.5 dB, -3 dB)

Tuning Range MW:522 kHz to 1 629 kHz

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

Power Requirements AC 230V~, 50 Hz
Power Consumption 600 W/690 VA (at operation), 2.7 watts (in standby mode)
Dimensions (W × H × D) 445 mm × 177 mm × 475 mm
Mass 24 kg

Designs & specifications are subject to change without notice.

35 dB at 1 kHz

60 dB (±400 kHz)

AM (MW/LW) tuner

LW:144 kHz to 288 kHz

General

(No.22019)1-3

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 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

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.

1-4 (No.22019)

1.5 Safety Precautions (U.K only)

(1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con-

tinued 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.

(2) Any unauthorised design alterations or additions will void t he manufacturer's guarantee; furthermore the manufacturer cannot

accept responsibility for personal injury or property damage resulting therefrom.

(3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never

be replaced by parts other than those listed in the manual. Please not e however that many electrical and mechanical parts in
the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts
other than specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts
shown in the Parts List of the Service Manual and 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 shoul d be confirmed that they have been returned to
normal, after re-assembling.

1.5.1 Warning

(1) Service should be performed by qualified personnel only.
(2) This equipment has been designed and manufactured to meet international safety standards.
(3) It is the legal responsibility of the repairer to ensure that these safety standard s are maintained.
(4) Repairs must be made in accordance with the relevant safety standards.
(5) It is essential that safety critical components are replaced by approved parts.
(6) 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.

(No.22019)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.22019)

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

arrow while pulling both sides outward.

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

• Prior to performing the following procedure, remove 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

assembly.

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

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

(5) Disconnect the harness from the connector CN971

CN977, CN983 a nd CN985 on the system control board

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

Top cover

B

(both sides)

A

(both sides)

Fig.1

C

Audio signal

1 board

a

(fixing the

lug wire)

,

CN201

Tie band 3

Front panel assembly

Tie band 1

C

Harness

band

3.1.3 Removing the V compo 2 board & tuner unit & compu
link board
(See Fig.2 and 4)

• Prior to performing the following procedure, remove the top

cover.
(1) Disconnect the harness from the connecto r CN581

V compo 2 board.
Remove the two screws E' attaching the V compo 2 board
to the rear panel.

(2) Disconnect the card wire from th e connector CN1

tuner unit.
Remove the two screws E'' attaching the tuner unit to the
rear panel.

(3) Disconnect the harness from the connecto r CN301

compu link board.
Remove the two screws E''' attaching the compu link board
to the rear panel.

3.1.4 Removing the Y/C separator board
(See Fig.2)

• Prior to performing the following procedure, remove the top

cover.
(1) Cut off the tie band 2 fixing the harness.
(2) Draw out up the Y/C separator board , disconnecting the

connectors CN481

and CN482 on the Y/C separator board.

on the

on the

on the

Y/C separator

board

CN482

CN481

V compo 2 board

D

Tie band 2

CN581

Fig.2

Audio 7.1ch

in board

CN1

Tuner unit

D

Compu
link board

Front panel
assembly

CN301

Fig.3

(No.22019)1-7

3.1.5 Removing the audio 7.1ch in board
(See Fig.2 and 4)

• Prior to performing the following procedure, remove the top

cover.
(1) Cut off the tie band 2 & 3 fixing the harness.
(2) Disconnect the harness from the con nector CN201

audio signal 1 board.

(3) Remove the two screws E'''' attaching the audio 7.1ch in

board to the rear panel.

3.1.6 Removing the rear panel
(See Fig.4)

• Prior to performing the following procedure, remove the top

cover.
(1) Unsolder the two solder parts on the AC inlet.
(2) Remove the thirty-eight screws E & E' & E'' & E''' & E''''

attaching each board to the rear panel.

(3) Remove the thirteen screws F attaching the rear panel on

the back of the body and bottom.

3.1.7 Removing the system control board
(See Fig.5 and 6)

• Prior to performing the following procedure, remove the top

cover and front panel assembly.
(1) Disconnect the card wires and harness from the connector

, CN964 and CN981 on the system control board.

CN963

(2) Cut off the tie bands fixing the harness.
(3) Disconnect the harness from the connector CN45

power supply 2 board and CN25 on the power/ fuse board.
(4) Disconnect the connector CN324 on the audio signal 2

board and CN234
(5) Remove the three plastic rivet.

on the audio signal 1 board.

on the

on the

Rear panel

E

FF

CN983

CN977

Plastic rivet

Solder part

E

EE

CN981

AC inlet

Black

Red

E''''E'

E''

F

F

Fig.4

System control board

CN985

E'''

E

Plastic rivet

E

F

F

CN234

CN224

CN203

CN324

CN963

CN964

Fig.5

Tie band

Audio signal 2 board

Audio signal 1 board

Fig.6

CN971

CN45

(on power
supply 2

)

board

Tie band

CN25

Power/ fuse

board

1-8 (No.22019)