JVC RXD-402-B Service manual

SERVICE MANUAL

AUDIO/VIDEO CONTROL RECEIVER

MB44820059

RX-D402B, RX-D401S

Area suffix

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

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6

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

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

5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-19

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.MB448

2005/9

SPECIFICATION

Amplifier Output Power At stereo operation Front channels 110 W per channel, min. RMS, driven into 6

Ω at 20 Hz to 20 kHz with no more than 0.8%

total harmonic distortion.

At surround operation Front channels 110 W per channel, min. RMS, driven into 6

Center channel 110 W, min. RMS, driven into 6

Surround channels 110 W per channel, min. RMS, driven into 6

Surround back channels 110 W per channel, min. RMS, driven into 6

Audio Audio Input Sensitivity/

Video Video Input Sensitivity/

HDMI HDMI Input (Ver. 1.1) VCR (DBS), DVR/DVD

FM tuner (IHF) Tuning Range 87.5 MHz to 108.0 MHz

Usable Sensitivity Monaural 12.8 dBf (1.2

50 dB Quieting Sensitivity Monaural 16.0 dBf (1.7

Stereo Separation at REC OUT 35 dB at 1 kHz

AM tuner Tuning Range 530 kHz to 1 710 kHz

General Power Requirements AC 120 V , 60 Hz

Power Consumption 150 W/200 VA (at operation)

Dimensions (W

Mass 7.1 kg (15.7 lbs)

Impedance

Audio Input
(DIGITAL IN)*

Audio Output Level DVR, VCR 270 mV

Signal-to-Noise Ratio ('66 IHF/'78 IHF) 80 dB/62 dB

Frequency Response (6

Bass Boost +4 dB ±1 dB at 100 Hz

Equalization
(at DSP operation)

Impedance

Video Output Level/
Impedance

× H × D) 435 mm × 91.5 mm × 371 mm (17 3/16 inch-

DVR/DVD, VCR, DBS, TV 270 mV/47 k

Coaxial DIGITAL IN 1(DVR/DVD): 0.5 V(p-p)/75 Ω

Optical DIGITAL IN 2(DBS), 3(VCR): -21 dBm to -15

USB USB

Ω) 20 Hz to 20 kHz (±1 dB)

Center frequency 63 Hz, 250 Hz, 1 kHz, 4 kHz, 16 kHz

Control range ±8 dB

Composite video:DVR/DVD, VCR, DBS 1 V(p-p)/75

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

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

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

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

Synchronization Negative

HDMI Output (Ver. 1.0) MONITOR OUT

Stereo 37.5 dBf (20.5

Ω at 1 kHz with no more than 0.8% total har-

monic distortion.

Ω at 1

kHz,with no more than 0.8% total harmonic
distortion.

Ω at 1 kHz, with no more than 0.8% total har-

monic distortion.

Ω at 1 kHz, with no more than 0.8% total har-

monic distortion.

Ω

dBm (660 nm ±30 nm)

Ω

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

µV/75 Ω)
µV/75 Ω)

µV/75 Ω)

0.9 W (in standby mode)

es

× 3 5/8 inches × 14 5/8 inches)

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

Designs and specifications are subject to change without notice.

1-2 (No.MB448)

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.MB448)1-3

1.5 Importance administering point on the safety

Primary board (Forward side)

F103

Main amplifier board (Forward side)

F102

F101

Caution: For continued protection against risk of
fire, replace only with same type 4 A/125 V for
F101, 4 A/125 V for F102, 6.3 A/125 V for F103.
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 4 A/125 V, 4 A/125 V pour F102, et 6,3 A/125V
pour F103.
Ce sont des fusibles suretes qui functionnes rapide.

^

1-4 (No.MB448)

1.6 Caution after repairs

There are two power supply as the second power supply of the transformer.
One is a power supply for power IC(3pin), and another is a power supply for the control(5pin).

+B for power IC
(3pins)

There are two power supply as the second power supply of the transformer.
One is a power supply for power IC(3pin), and another is a power supply for the control(8pin).

Please connect first of all and confirm the power supply for the control when you do the energizing examination after it completes of
the repair.

+B for control section
(8pins)

For power IC(3pins)

Please never do the energizing examination in a power supply of power IC alone.
Moreover, when the control system breaks down, power IC is occasionally damaged.

(No.MB448)1-5

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-6 (No.MB448)

SECTION 3

DISASSEMBLY

3.1 Main body section

3.1.1 Removing the top cover
(See Figs.1 and 2)

(1) From the both sides of the main body, remove the four

screws A attaching the top cover. (See Fig.1)

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

screws B and screw C attaching the top cover. (See Fig.2)

(3) Remove the top cover in the direction of the arrow. (See

Fig.1.)

Top cover

A

Fig.1

3.1.2 Removing the HDMI board
(See Fig.3)

• Remove the top cover.

(1) From the back side of the main body, remove the three

screws D attaching the HDMI board to the rear panel.

(2) From the top side of the main body, remove the screw E at-

taching the HDMI board to the support bracket.

(3) Disconnect the card wires from the connectors (CN731

, CN762) on the HDMI board.

CN732

(4) Take out the HDMI board from the main body and discon-

nect the parallel wires from the connectors (CN771,

) on the reverse side of the HDMI board.

CN772

Reference:

Remove the shield from the HDMI board as required.

B

C

Top cover

B B

Fig.2

CN732

CN731

,

Support bracket

E

Shield

CN771

CN762

CN772 HDMI board

D

Rear panel

Fig.3

(No.MB448)1-7

3.1.3 Removing the front panel assembly
(See Figs.4 and 5)

• Remove the top cover and HDMI board.

(1) From the top side of the main body, remove the tie band

bundling the wires. (See Fig.4.)

Reference:

After reassembling, bundle the wires with a new tie band

as before. (See Fig.4.)
(2) Release the wire holders bundling the wires. (See Fig.4)
(3) Disconnect the card wire from the connector CN102

main amplifier board. (See Fig.4)

(4) Disconnect the wire from the connector CN351

amplifier board. (See Fig.4)

(5) Disconnect the wire from the connector CN552

board. (See Fig.4)

(6) Disconnect the wire from the connector CN661

board. (See Fig.4)

(7) Remove the three screws F attaching the front panel as-

sembly. (See Fig.4)

(8) Remove the screw F attaching the OSD connect 2 board.

(See Fig.4)

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

screws F attaching the front panel assembly. (See Fig.5)

(10) Release the joints a and remove the front panel assembly

in the direction of the arrow. (See Fig.5)

on the

on the main

on the input

on the DSP

CN102

Wire holders

F

CN552

Input board

Main amplifier board

Wire holder

Wire holder

F

CN661

DSP board

Tie band

F

F

CN351

OSD connect 2 board

Front panel assembly

F

Fig.4

F

a

Fig.5

1-8 (No.MB448)

3.1.4 Removing the rear panel
(See Fig.6)

• Remove the top cover.

(1) From the back side of the main body, remove the strain re-

lief from the rear panel in the direction of the arrow and re­move the power cord.

(2) Remove the three screws G and twenty-seven screws H

attaching the rear panel.

3.1.5 Removing the tuner
(See Fig.7)

• Remove the top cover.

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

wire from the connector CN1

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

screws J attaching the tuner to the rear panel and take out
the tuner.

3.1.6 Removing the subwoofer board
(See Fig.7)

• Remove the top cover.

(1) From the top side of the main body, disconnect the wire

from the connector CN524

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

attaching the subwoofer board to the rear panel and take
out the subwoofer board.

on the tuner.

on the subwoofer board.

Power cord

H

Strain relief

G HHG H

DSP board

CN661CN652

Fig.6

Rear panel

CN683

N

CN682

3.1.7 Removing the DSP board
(See Fig.7)

• Remove the top cover.

(1) From the back side of the main body, remove the five

screws M attaching the DSP board to the rear panel.
(2) Remove the screw N attaching the DSP board.
(3) Disconnect the DSP board from the DSP connect board

while releasing the claw b of the connector CN681

DSP board.

Note:

When releasing the claw b, take care not to break it.

(4) Take out the DSP board and disconnect the wires from the

connectors (CN661

the DSP board.
(5) Disconnect the card wires from the connectors (CN651

) on the forward side of the DSP board.

CN652

, CN682, CN683) on the forward side of

on the

CN651 Tuner

DSP board

CN681

b

DSP connect board

,

M

Rear panel Rear panel

Fig.7

CN1 CN524

KJ

Subwoofer board

(No.MB448)1-9

3.1.8 Removing the compulink board
(See Fig.8)

• Remove the top cover and HDMI board.

(1) From the top side of the main body, disconnect the wire

from the connector CN565 on the compulink board.

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

attaching the compulink board to the rear panel and take
out the compulink board.

3.1.9 Removing the primary board
(See Fig.8)

• Remove the top cover and HDMI board.

(1) From the top side of the main body, remove the screw Q

attaching the support bracket on the chassis base.

(2) Release the wire holders and disconnect the wire from the

connector CN101

(3) Disconnect the power cord from the connector CN120 on

the primary board.

(4) Remove the two screws R and two screws R' attaching the

primary board.

Reference:

When attaching the screws R', attach the wire holders
with them as before.

(5) Take out the primary board from the main body and remove

the wires from the soldered sections c on the reverse side
of the primary board.

on the main amplifier board.

Primary board

Wire holder

R'

c

R

CN120

Wire holder

R' R

Q

Chassis base

Wire holderCN101

CN565

Main amplifier board

Compulink board

P

Support bracket

Rear panel

Fig.8

1-10 (No.MB448)

3.1.10 Removing the power transformer

(See Fig.9)

• Remove the top cover.

(1) From the top side of the main body, remove the tie band

bundling the wires.

Reference:

After reassembling, bundle the wires with a new tie band

as before.
(2) Release the wire holders to remove the wires.
(3) Disconnect the wires from the connectors (CN106

on the main amplifier board.
(4) Remove the soldered sections d and remove the wires.
(5) Remove the four screws S and take out the power trans-

former from the main body.

3.1.11 Removing the trans primary board
(See Fig.9)

• Remove the top cover.

(1) From the top side of the main body, remove the tie band

bundling the wires.

Reference:

After reassembling, bundle the wires with a new tie band
as before.

(2) Remove the wires from the soldered sections d and re-

move the wires.

(3) Remove the solders from the soldered sections e and re-

move the trans primary board.

, CN111)

Trans primary
board

d

e

f

Trans secondary
board

Tie band

Wire holder

S

S

S

Fig.9

Wire holders

CN106 C N111

Main amplifier board

3.1.12 Removing the trans secondary board
(See Fig.9)

• Remove the top cover.

Reference:

Take out the power transformer from the main body as re-

quired.
From the side of the power transformer, remove the solders from
the soldered sections f and remove the trans secondary board.

(No.MB448)1-11

3.1.13 Removing the DCDC control board
(See Fig.10)

• Remove the top cover.

From the top side of the main body, disconnect the DCDC control
board from the main amplifier board in an upward direction while
releasing the claw g of the connector CN152
fier board.

Note:

When releasing the claw g, take care not to break it.

on the main ampli-

DCDC control board

g

CN152

Main amplifier board

3.1.14 Removing the PWM modulation 1 board
(See Fig.11)

• Remove the top cover.

(1) Disconnect the wire from the connector CN413

PWM modulation 2 board.

(2) Disconnect the wires from the connectors (CN311

CN313) on the PWM modulation 1 board.

(3) Disconnect the PWM modulation 1 board from the main

amplifier board in an upward direction while releasing the
claw h of the connector CN302

Note:

When releasing the claw h, take care not to break it.

on the main amplifier board.

on the

, CN312,

DCDC control board

CN402

Main amplifier
board

CN312

j

Main amplifier board

Fig.10

PWM modulation 1 board

h

CN302

CN313 CN311

3.1.15 Removing the PWM modulation 2 board
(See Fig.11)

• Remove the top cover.

(1) From the top side of the main body, disconnect the wires

from the connectors (CN411
modulation 2 board.

(2) Disconnect the PWM modulation 2 board from the main

amplifier board in an upward direction while releasing the
claw j of the connector CN402

Note:

When releasing the claw j, take care not to break it.

1-12 (No.MB448)

, CN412, CN413) on the PWM

on the main amplifier board.

CN411CN413CN412

PWM modulation 2 board

Fig.11

3.1.16 Removing the cooling fan

(See Fig.12.)

• Remove the top cover.

(1) Disconnect the wire from the connector CN103

amplifier board.

(2) Remove the screw T and screw T'.

Reference:

When attaching the screw T', attach the wire holder with

it.
(3) Take out the cooling fan assembly.
(4) Remove the four screws U attaching the cooling fan to the

fan bracket.

on the main

Cooling fan assembly

Cooling fan

Wire holder

T'

CN103

U

3.1.17 Removing the speaker terminal 1 and speaker terminal 2 boards
(See Fig. 13)

• Remove the top cover and rear panel.

Reference:

Remove the tuner, subwoofer board and DSP board as re­quired.
(1) From the top side of the main body, disconnect the wire

from the connector CN265
board.

(2) Disconnect the parallel wire from the connector CN465

the speaker terminal 1 board.
(3) Take out the speaker terminal 1 board from the main body.
(4) Disconnect the wires from the connectors (CN209

on the speaker terminal 2 board.
(5) Take out the speaker terminal 2 board from the main body.

on the speaker terminal 1

on

, CN262)

Fan bracket

CN262

U

T

Main amplifier board

Fig.12

CN465CN209

CN265

Speaker terminal 2 board

Fig.13

Speaker terminal 1 board

(No.MB448)1-13

3.1.18 Removing the DSP connect board
(See Fig.14)

• Remove the top cover, tuner and DSP board.

(1) Disconnect the wire from the connector CN209 on the

speaker terminal 2 board.

(2) Disconnect the DSP connect board from the input board in

an upward direction while releasing the claw k of the con­nector CN502

Note:

When releasing the claw k, take care not to break it.

(3) Disconnect the connector CN516

board from the input board.

3.1.19 Removing the OSD connect 1 board
(See Fig.14)

• Remove the top cover, tuner and DSP board.

(1) Disconnect the wire from the connector CN524

woofer board.

(2) Disconnect the wire from the connector CN513

connect 1 board.

(3) Disconnect the OSD connect 1 board from the main ampli-

fier board in an upward direction while releasing the claw m
of the connector CN222

Note:

When releasing the claw m, take care not to break it.

on the input board.

on the DSP connect

on the sub-

on the OSD

on the main amplifier board.

DSP connect
board

k

CN502

Input board CN513

CN516

DSP connect board

OSD connect 1
board

m

CN222

Main amplifier board

CN209 CN524

Speaker terminal
2 board

OSD connect 1 board

Subwoofer
board

3.1.20 Removing the input board
(See Fig. 15)

• Remove the top cover, HDMI board, rear panel, tuner, sub-

woofer board, DSP board, compulink board and DSP connect
board.
(1) Disconnect the wire from the connector CN513

connect 1 board.

(2) Disconnect the wires from the connectors (CN530

CN552) on the input board.

(3) Disconnect the parallel wire from the connector CN540 on

the input board.

(4) Remove the three screws V and take out the input board

from the main body.

on the OSD

, CN531,

CN540

CN552

CN530

V V

Input board

Fig.14

OSD connect 1 board

CN531

CN513

Fig.15

1-14 (No.MB448)

3.1.21 Removing the master clock board

(See Fig.16)

• Remove the top cover, tuner, DSP board, PWM modulation 1

board, PWM modulation 2 board and OSD connect 1 board.
(1) From the top side of the main body, remove the tie band

bundling the wires.

Reference:

After reassembling, bundle the wires with a new tie band
as before.

(2) Disconnect the wire from the connector CN201

amplifier board.

(3) Remove the two screws W with a short driver and remove

the transistor hold from the joints n of the heat sink.

(4) Take out the master clock board from the main body.

on the main

Tie band

Transistor hold

n

n

3.1.22 Removing the HDMI-Regulator board

(See Fig.17)

• Remove the top cover.

(1) From the top side of the main body, disconnect the wire

from the connector CN117
lator board.

(2) Remove the two screws X attaching the HDMI-Regulator

board on the chassis base.

(3) Take out the HDMI-Regulator board from the main body.

on the forward side of the regu-

CN201

Main amplifier board

X

HDMI-Regulator board

Chassis base

W

Master clock board

Fig.16

HDMI-Regulator board

CN117

Fig.17

Regulator board

(No.MB448)1-15

3.1.23 Removing the main amplifier board

Y

(See Figs.18 and 19)

• Remove the top cover, HDMI board, front panel assembly, tun-

er, DSP board, DCD control board, PWM modulation 1 board,
PWM modulation 2 board, OSD connect 1 board and master
clock board.
(1) Disconnect the wire from the connector CN265

speaker terminal 1 board. (See Fig.18.)

(2) Disconnect the wire from the connector CN262

speaker terminal 2 board. (See Fig.18.)

(3) Disconnect the wires from the connectors (CN103

) on the main amplifier board. (See Fig.18.)

CN111

(4) Disconnect the parallel wire from the connector CN101

the main amplifier board. (See Fig.18.)

(5) Disconnect the wire from the connector CN117

ward side of the regulator board. (See Fig.18.)

(6) Disconnect the wires from the connectors (CN530

on the input board. (See Fig.19.)

(7) Disconnect the parallel wire from the connector CN540

the input board. (See Fig.19.)
(8) Remove the four screws Y and two screws Z. (See Fig.19.)
(9) Take out the main amplifier board with the regulator board

from the main body. (See Fig.19.)

on the

on the

, CN106,

on

on the for-

, CN531)

on

CN103

Main amplifier board

CN106

CN101 CN117

CN262Regulator board

Speaker terminal 2 board

CN265

Speaker terminal 1 board

CN111

Y

Input board

CN540

CN530

Fig.18

Z

CN531

Fig.19

Main amplifier board

Y

1-16 (No.MB448)

3.1.24 Removing the regulator board
(See Fig.20)

• Remove the top cover, HDMI board, front panel assembly, tun-

er, DSP board, DCD control board, PWM modulation 1 board,
PWM modulation 2 board, OSD connect 1 board, master clock
board and main amplifier board.
(1) From the forward side of the main amplifier board, discon-

nect the wire from the connector CN105

(2) Disconnect the wire from the connector CN114

ulator board.

(3) Remove the two screws AA attaching the regulator board.

.

on the reg-

Main amplifier board

Regulator board

3.1.25 Removing the heat sink
(See Fig.21)

• Remove the top cover, HDMI board, front panel assembly, tun-

er, DSP board, DCD control board, PWM modulation 1 board,
PWM modulation 2 board, OSD connect 1 board, master clock
board and main amplifier board.
(1) From the forward side of the main amplifier board, remove

the screw AB and remove the wire holder board with the
wires.

(2) Remove the five screws AC to remove the heat sink.

CN105

Heat sink

AC

Main amplifier board

CN114

AA

Fig.20

Wire holder board

AB

AC

Fig.21

(No.MB448)1-17

3.2 Front panel assembly section

• Remove the front panel assembly.
(See "3.1.3 Removing the front panel assembly".)

3.2.1 Removing the JOG board

(See Figs. 1 and 2)

(1) From the inside of the front panel assembly, remove the

four screws A attaching the JOG board. (See Fig.1.)

(2) Take out the JOG board while lifting it from the front panel

assembly little by little.

Reference:

The MASTER VOLUME knob and SOURCE SELEC­TOR knob are removed from the front side simulta­neously. (See Fig.2.)

(3) From the forward side of the JOG board, disconnect the

wire from the connector CN913

3.2.2 Removing the OSD connect 2 board

(See Fig. 1)

(1) From the inside of the front panel assembly, remove the

two screws A attaching the OSD connect 2 board.

(2) Disconnect the wire from the connector CN914

board.

. (See Fig.1)

on the FL

Front panel assembly

CN913

A

A

JOG board

A

Front panel assembly

CN914

FL board

A

OSD connect 2 board

Fig.1

3.2.3 Removing the FL board

(See Fig. 3)

• Remove the JOG board.
(1) Remove the eight screws A and take out the FL board.
(2) Disconnect the wire from the connector CN914

board.

on the FL

SOURCE SELECTOR knob

Front panel assembly

A

A

MASTER VOLUME knob

Fig.2

FL board

CN914

Fig.3

A

A

1-18 (No.MB448)

SECTION 4

ADJUSTMENT

This service manual does not describe ADJUSTMENT.

SECTION 5

TROUBLESHOOTING

This service manual does not describe TROUBLESHOOTING.

(No.MB448)1-19

Victor Company of Japan, Limited
AV & MULTIMEDIA COMPANY AUDIO/VIDEO SYSTEMS CATEGORY 10-1,1chome,Ohwatari-machi,Maebashi-city,371-8543,Japan

(No.MB448)

Printed in Japan

VPT

SCHEMATIC DIAGRAMS

AUDIO / VIDEO CONTROL RECEIVER

RX-D402B,RX-D401S

CD-ROM No.SML200509

Area suffix

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

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

Contents

Block diagram
Standard schematic diagrams
Printed circuit boards

COPYRIGHT 2005 Victor Company of Japan, Limited.

2-1
2-3
2-25 to 36

No.MB448SCH

2005/9

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.

< MEMO >

Block diagram

F
S
S

_
R
R

R

R

R
o

o

Audio/Video signal input and system
control section

Y OUT

IC530

Y

Y SEL.

PB OUT

IC531

PB

PB SEL.

VCR IN
DVR/DVD IN
MONITOR OUT

DVD C/SW

DVD SURR

DVR OUT

DVR/DVD IN

VCR

IN/OUT

TV

DBS

TO
TUNER

AV
COMPULINK

DBS

VCR OUT

VCR IN

DVR OUT

DVR/DVD IN

MONITOR

HDMI

PORT0

HDMI

PORT1

J4503

PR

J6504

DVD_C,DVD_SW
DVD_SL/SR

DVRREC_L/R

J6503

DVR_L/R

VCRREC_L/R

J6502

VCR_L/R

TV_L/R

J6501

DBS_L/R

TU_L/R

CN505

TU_DATAI
TU_DATAO
TU_CLK,TU_CE

IC501

CPU

CN565

J505

J6511

J6512

J6513

Y,C,CVBS

J711

IC731

HDMI

RX

CSDA,CSCL

J721

TX_RST
TX_HPD
TX_INT

J751

IC751

HDMI

TX

Y

C

CV

SD0 to 2,LRCK
BCK,RX_SPDIF
RX_MUTE

IC532

PR SEL.

MUTE

T_MUTE

IC507

EEPROM

RC_SDA
RC_SCL
RC_WP

HP_RELAY

CN555

AVCLINK

IC522

SY SEL.

IC524
IC525

SC SEL.

IC527

CV SEL.

HDMI_SY
HDMY_SC,CV

MICON

BUS SW

IC743

BUS SW

PR OUT

VIDEO1
VIDEO4

HDMI_Y

HDMI_PB

HDMI_PR

Y OUT

C OUT

CV OUT

FW781FW782

CN771CN772

Y,Pb,Pr

IC761
HDMI

SUB

IC741

SOURCE

VIDEO1
VIDEO11
HDMI_Y
HDMI_PB
HDMI_PR

HDMI_Y
HDMI_PB
HDMI_PR

HDMI_CLK
HDMI_STS
HDMI_COM
HDMI_RDY
HDMI_RST

SDTV/HDTV

DECODER

GRAPHICS

DIGITIZER

IC782

SDRAM

VIDEO1
VIDEO11

IC502

L,R

6CH

SEL.

BD3813/3842 DA
BD3813/3842 CL

DA,CL
S_MUTE

L,R

SBWR_MUTE

FR_RELAY
C_RELAY
SURR_RELAY
SBK_RELAY

DSP_STATUS
DSP_READY
DSP_COMMAND
DSP_CLOCK
DSP_RESET

HP_RY

Q524

BCHANGE1
BCHANGE2

FAN_ON/OFF
FAN_ L

PROTECT
FREQ_CTRL

D+5V,B+5V
+/-7V,+9V
A+5V(DSP)
D+5V(DSP)
+5V(VIDEO)
+12V(RELAY)

HDMI_CLK
HDMI_STS
HDMI_COM
HDMI_READY
HDMI_RESET

CN504

CN762

RX_SPDIF
DSP_SPDF

Y,C,CVBS
Y,Pb,Pr

IC771

AD_OUT_Y0 to Y7
AD_OUT_CBCR0 to 7

VIDEO

&

RGB

AD_SDA,AD_SCL
AD_RST,IP_RST

DATA0 to 31,ADDR0 to 10
SDRAM_CLK,BA0,BA1,DQM

BUF_OUT_Y0 to Y7,Y0 to 7
BUFF_OUT_CBCR0 to 7,CBCR0 to 7

HDMI RX,TX,micom,HDMI ADC and i/p converter section

CN503

CN501

CN516

CN602

CN509

CN672

CN506

CN502

CN530

CN531

DIGITAL

CN540

DIGITAL

DIGITAL

CN552

AUDIO_SEL1 to 4
SD0 to 2,LRCK
RX_MUTE,BCK

IC772
BUFF.

IC781

DIGITAL

VIDEO
CONV.

Master volume section

L,R
DVD_SW

CN513

DVD_SL/SR
DVD_C

DSP_L/R
DSP_C,DSP_SW
DSP_SL/SR

CN521

CN683

CN682

CN681

J681 UN682

IN1

DSP.L
DSP.R

DSP.LS/RS
DSP.C
DSP.SW

DSP.SBL
DSP.SBR

DSP_IN_L
DSP_IN_R

DSPSTATUS,DSPREADY
DSPCLK,DSPRESET
DSPCOMMAND

RX0

RX1

IN2

UN683

RX2

IN3

CN651 CN652

CN732CN731

JS901
JS902

User control keys, system control and FL display section

IC504

IC503

6CH VOLUME

IC611 to IC614

IC621,IC622

IC632 to IC634

AMP.

IC651
IC652

AMP.

IC685,IC686

DATA S E L

& MPX

SD0 to 2
LRCK,BCK

RX6,TX

USB
TERMINAL

CN914

CN952

CN913

CN903

VOL1,VOL2,JOG1,JOG2

S901 to S906

Master clock section

M_CLOCK

CN523

FREQ_CTRL

-B, -B+12V

Q444,Q445

-B+12V REG

CN524

J504

SUBWOOFER
OUT

IC211 to IC214

Master clock GEN.

SUBWFR

AMP

CN522

MUTE

DA,CL

DSP_SBL/SBR

DA,CL

S_MUTE
SBWR_MUTE

IC508

AUDIO SOUND

PROCESSOR

DSP and digital signal input terminal section

IC610

AMP.

P_SL/SR
P_C/LFE
P_BCK
P_LRCK

A4+/­B4+/-

IC601
IC602

AMP.

AUDIO_SEL1 to 4
HDMI_MUTE

AV COMPULINK

M_COMMAND,M_STATUS
M_CLK,M_RESET,M_BUSY
M_CS

IR DET.

D/A

IC903

AVC_IN/OUT

DAC_fs1
DAC_fs2
PD_DD
RST_DD

FL/FR,SL/SR
C/LFE,C_BCK
C_LRCK

D/A

DAC_fs3
DAC_fs4
PD_DD
RST_DD

IC620
IC630

D/A

FL/FR,SL/SR
C/LFE,C_BCK
C_LRCK

RX0,RX1,RX2,RX6,TX

J903

D+/-,VBUS

CN904

HEADPHONE_DET

Q910

REMOCON

IC902

KEY_IN1 to 3

DSP_A2 to A15,DSP_D0 to D15
DSP_CE0,DSP_ARE,DSP_AWE
DSP_AOE,DSP_BE0,DSP_BE1
SDRAM_CLK

IC664

SDRAM

DSP_A2 to A21
DSP_D0 to D15

ROM

IC671

DSP_CE1,DSP_AWE
DSP_AOE

IC697

8CH

CODEC

CPU

RX4

IC663

FLASH

LIN+/­RIN+/-

CDIN
CDOUT
CCLK
D_CS
D_RST

CN661

CN961

USB_IN

HP_L
HP_R

SEG1 to 35
GRID1 to 15

FMAM_LED
USB_LED,TV_LED

IC901

DBS_LED,DVD_LED
VCR_LED,HDMI_LED

CPU

&

FL

DRV.

STANDBY_IND

STANDBY

C_LRCK
S_LRCK
C_BCK
S_BCK
FL/FR
SL/SR
C/LFE
SBL/SBR

SCK,MOSI
MISO
HD3,HD4
READY
CSDSP

DIGITAL OUT

CN905

J901

HEADPHONE

DISPLAY

D917 to D923

D907

LED

UN686

DI901

FL

F1,F1

-VPP

D+5V

IC661

DSP

TX

CN202

CN902

TO
FAN

CN201

M
F
P

CN222

F
P
L
R

FW240

CN351

CN102CN130 CN131 CN103

2-1

Regulator, DC-DC converter and digital power amplifier section

CN202

CN201

M_CLOCK
FREQ_CTRL
PROTECT

AMP_-B
AMP_-B+12V

PROTECT

Q281 to Q286
PROTECTOR

Lout_HP
Rout_HP

FER

TO
FAN

FL,FR,C

CN222

SL,SR
SBL,SBR

FREQ_CTRL
PROTECT
Lout_HP
Rout_HP

CN130

CN131

FW240

Lout_HP
Rout_HP

CN351

RY300

HP_RY
+12V_RY

FAN_ON/OFF
FAN_LOW

Q151,Q152

CN103

FAN

+12V_FAN

CN102

D+5V_Mi,FL1,FL2,VPP

M_CLOCK
+/-7V

Q154

Q153

REG

PWM modulator section

FL,FR
A.NFB_FL

CN302

CN301

FW323

CN313

CN402

CN401

VCHANGE_1,VCHANGE_2,M_CLOCK

+/-7V

A+5V_Vi

A+9V_Vi_Tu

A+5V_DSP

+12V_RY

D.NFB_FL
A.NFB_FR
D.NFB_FR

C
A.NFB_C
D.NFB_C

+/-7V

CN423

CN413

SL,SR
A.NFB_SL

+/-7V

D.NFB_SL
A.NFB_SR
D.NFB_SR

SBL,SBR
A.NFB_SBL
D.NFB_SBL
A.NFB_SBR
D.NFB_SBR

D+5V_Mi,D+5V_DSP
B+5V_Mi,POWER_ON

Q157,Q158

+/-7V REG

IC153

A+5V_Vi

REG

IC152

A+9V_Vi_Tu

REG

IC151

A+5V_DSP

REG

IC201

MODULATOR

IC801

MODULATOR

IC301

MODULATOR

IC401

MODULATOR

D+5V_Mi
B+5V_Mi

D+5V_Mi

Q156,Q176

D+5V_HDMI

Q155,Q171

D+5V_DSP

DCDC_+12

DCDC_-B+12

CN312CN311 CN412CN411

Q101

D+5V_Mi,B+5V_Mi

REG

D+5V_DSP

Q177

REG

CN107

CN117

Q172

REG

Q174

REG

Q175

REG

VPP

CN321

CN322

CN421

CN422

FRONT_L
FRONT_R

A.NFB_FL,D.NFB_FL
A.NFB_FR,D.NFB_FR

CENTER

SURROUND_L
SURROUND_R

A.NFB_SL,D.NFB_SL
A.NFB_SR,D.NFB_SR

SURRBACK_L
SURRBACK_R

A.NFB_SBL,D.NFB_SBL
A.NFB_SBR,D.NFB_SBR

POWER_ON

CN104 CN105

CN114 CN115

Q102

VPP REG.

A.NFB_C
D.NFB_C

PWM_V
Vout_DET

Q1101
Q1102
IC101
DCDC

converter

D1101

to

D1104

+B

-B

+12V

-B+12V

D111 ,D11 2

D119,D120

IC251
IC351

AMP

IC851

AMP

IC261
IC361

AMP

IC451
IC461

AMP

AC_DET_1

D101

to

D104

POWER_ON

S2

S2

S3

Speaker terminal section

Lout

CN251

CN265

Rout
Cout

RY295
RY895

FRONT_RY
CENTER_RY

CN465

FRONT_RY
CENTER_RY

CN252

CN106C N111CN101CN152

SLout
SRout

CN262

SBLout
SBRout

PWM_V,Vout_DET
M_CLOCK
AC_DET_1

CN151

VCHANGE_1
VCHANGE_2

S1

CN206CN211

S2
S3

Power

trans.

RY391
RY491

SURR_RY
SURRBACK_RY

IC111 to IC113, IC115

CN209FW451

FRONT_RY
CENTER_RY
SURR_RY
SURRBACK_RY

DCDC converter

control

Primary section

FW121

AC

T102

Trans.

POWER_ON

Q1001

RY101

ST295

FRONT
&
CENTER

ST292

SURROUND
&
SURRBACK

CN120

Main

plug

2-2

Standard schematic diagrams

Primary section

!

TH.FUSE

LVA10579-12

PW157

PW156

PW155

PW154

PW153

PW152

PW151

LVA10579-13

S1

1

COM

2

S1

3

(SHEET 2)

CN211

QJK012-034003-E

TO CN111 OF LVA10578-1

PW11 C121

0.1

PW13

S2

1

2

COM

3

4

S2

5

6

(SHEET 2)

S3

7

S3

8

CN206

TO CN106 OF LVA10578-1

WJK0208-002A-E

J

54

AC

1

AC

of LVA10578-1to CN101

(SHEET 2)

2

3

4

RY+9V

POWER_ON

FW121

9

!

T102

QQT0478-001

Parts are safety assurance parts.
When replacing those parts make
sure to use the specified one.

1

B142

QUY158-150Y

FC113

QNG0020-001Z

43

D1001

1SS133-T2

C1001
4700p

21

F103

!

!

RY101

QSK0128-001

FC103
QNG0020-001Z

!

!

C1002

0.22

Q1001
KRC105S-X

R1002

3.3M

R1001

3.3M

PW103

PW104

!

MAINS

PLUG

CN120

LIVE/
BRN

2

1

NEUTRAL/
BLU

123

!

C1004

0.001

!

QNZ0136-001Z

QGA7901C1-02

EP151

!

C1003

0.001

!

LVA10579-5

J

F103

QMF51U1-6R3-J8

F104

-

VERSION CODES

J ;U.S.A.
C ;CANADA

2-3

VOLTAGE MEASUREMENT CONDITION

POWER ON

SOURCE FM(NO SIGNAL)

SURROUND OFF

VOLUME 0

SHEET
NUMBER

1

2

3

4

5

6

7

8

9

10

11 HDMI ADC / i/p CONVERTER

CIRCUIT DISCRIPTION

PRIMARY

REGULATOR / DC-DC CONVERTER

PWM MODULATOR / MASTER CLOCK

DIGITAL POWER AMP / SPKEAKER TERMINAL

AUDIO,VIDEO SIGNAL INPUT / SYSTEM CONTROL LSI

COMPONENT VIDEO IN/OUT

MASTER VOLUME IC

USER CONTROL KEYS / SYSTEM CONTROL IC / FL DISPLAY

DSP IC / DIGITAL SIGNAL INPUT TERMINAL

HDMI RX / TX / MICOM

SHEET 1

2-4