Jvc RX-F31-S Service Manual

SERVICE MANUAL

HOME CINEMA CONTROL CENTER

MB44920057

RX-F31S

Area suffix

A ------------------------ Australia
US ------------------------ Singapore
UF ------------------------------ China
UJ ---------------------- U.S.Military

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 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15

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

COPYRIGHT © 2005 Victor Company of Japan, Limited

No.MB449

2005/7

SPECIFICATION

Amplifier Output Power At stereo operation Front channels 100 W*1 per channel, min. RMS, driven into

6

Ω at 1 kHz with no more than 10% total har-

monic distortion.

At surround operation Front channels 100 W*1 per channel, min. RMS, driven into

Center channel 100 W*1, min. RMS, driven into 6

Surround channels 100 W*1 per channel, min. RMS, driven into

Surround back channel 100 W*1, min. RMS, driven into 6

Audio Audio Input Sensitivity

Video Video Input Sensitivity/

FM tuner (IHF) 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

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

General Power Requirements AC 110 V/127 V/220 V/230 V - 240 V , adjust-

Power Consumption 120 W (at operation)

Dimensions (W

Mass 6.3 kg

/Impedance

Audio Input
(DIGITAL IN)*2

Audio Output Level DVR, VCR, MONITOR OUT 330 mV

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

Frequency Response (8

Bass Boost +4 dB ±1 dB at 100 Hz

Equalization
(at DSP operation)

Impedance

Video Output Level/
Impedance

Synchronization Negative

× H × D) 435 mm × 70 mm × 317.2 mm

DVR/DVD (DVD MULTI), VCR, DBS, TV 330 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 dBm (660 nm ±30 nm)

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 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

Stereo 37.5 dBf (20.5

6

Ω at 1 kHz with no more than 0.8% total

harmonic distortion.

Ω at 1 kHz,

with no more than 0.8% total harmonic distor­tion.

6

Ω at 1 kHz with no more than 0.8% total

harmonic distortion.

Ω at 1 kHz,

with no more than 0.8% total harmonic distor­tion.

Ω

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)

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

able with the voltage selector, 50 Hz/60 Hz

5 W (in standby mode)

*1: Measured on AC 110 V, 127 V, 220 V, and 240 V.

*2: 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.MB449)

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.MB449)1-3

SECTION 2

SPECIFIC SERVICE INSTRUCTIONS

This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.

1-4 (No.MB449)

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 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

B

B

Fig.2

Top cover

B

(No.MB449)1-5

3.1.2 Removing the front panel assembly
(See Figs.3 and 4)

• Remove the top cover.

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

bundling the wires. (See Fig.3.)

Reference:

After reassembling, bundle the wires with the new tie
bands as before. (See Fig.3.)

(2) Disconnect the parallel wire from the connector CN412

the regulator connect board. (See Fig.3)

(3) Disconnect the wire from the connector CN451

mother board. (See Fig.3)

(4) Remove the four screws C and screw C' attaching the front

panel assembly. (See Fig.3)

Reference:

When attaching the screw C', attach the earth wires with
it as before. (See Fig.3.)

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

screws C attaching the front panel assembly. (See Fig.4)

(6) From the both and bottom sides of the main body, release

the joints (a, b) and remove the front panel assembly in the
direction of the arrow. (See Figs.3 and 4)

on the input

on

Front panel assembly

C C C

aa

CN451

Input mother board

CC

b

Regulator connect board

Tie bands

CN412

Fig.3

Front panel assembly

C'

Earth wires

3.1.3 Removing the rear panel
(See Fig.5)

• 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 twenty-nine screws D attaching the rear panel.

1-6 (No.MB449)

Strain relief

Power cord

D

Fig.4

Rear panel

Fig.5

D

D

3.1.4 Removing the tuner

(See Fig.6)

• 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 E attaching the tuner to the rear panel and take out
the tuner.

3.1.5 Removing the DSP board

(See Fig.6)

• Remove the top cover.

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

screws E attaching the DSP board to the rear panel.

(2) From the top side of the main body, disconnect the DSP

board from the vol IC board while releasing the claw c of
the connector CN601

Note:

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

(3) Take out the DSP board and disconnect the card wire from

the connector CN602
board.

Reference:

When attaching the DSP board, align the section d of the
speaker relay board in hole on the DSP board.

on the tuner.

on the DSP board.

on the forward side of the DSP

CN1

Tuner

DSP board

Rear panel

CN601

c

E

Vol IC
board

DSP board

CN601

CN602

Speaker relay board

Rear panel

E

d

3.1.6 Removing the master clock board

(See Fig.7)

• Remove the top cover.

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

Reference:

When attaching the screw F, attach the holder with it as
before.

(2) Disconnect the connector CN771

board from the main amplifier board in an upward direction.

3.1.7 Removing the gate drive-2 board

(See Fig.7)

• Remove the top cover.
From the top side of the main body, disconnect the connector

on the gate drive-2 board from the main amplifier board

CN311

in an upward direction.

3.1.8 Removing the S.S. setup board

(See Fig.7)

• Remove the top cover.

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

ing the wire.

Reference:

After reassembling, fix the wire with a new tie band as
before.

(2) Disconnect the wire from the connector CN725

setup board.

(3) Disconnect the S.S. setup board from the main amplifier

board while releasing the claw e of the connector CN727
on the main amplifier board.

Note:

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

on the master clock

on the S.S.

Main amplifier board

CN771

Holder

Master clock board

Fig.6

Gate drive-2 board

CN311

F

Tie band

S.S. setup
board

Speaker terminal board

Fig.7

S.S. setup board

CN725

e

CN727

(No.MB449)1-7

3.1.9 Removing the vol sel board
(See Fig.8)

• Remove the top cover.

(1) Remove the strain relief from the rear panel in the direction

of the arrow.

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

screws G attaching the vol sel board to the rear panel.

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

from the connectors (CN204

(4) Take out the vol sel board from the main body and remove

the wires from the soldered sections f on the reverse side
of the vol sel board.

3.1.10 Removing the audio input/output board
(See Fig.8)

• Remove the top cover.

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

screws G attaching the audio input/output board to the rear
panel.

(2) Disconnect the audio input/output board from the video

connect board while releasing the claw g of the connector

on the audio input/output board.

CN516

Note:

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

(3) Disconnect the card wires from the connectors (CN508

CN514) on the forward side of the audio input/output

board.

, CN205) on the vol sel board.

Chassis base assembly

Primary board

CN203

h

H

CN218

H

Vol sel board

Power cord

CN205

Stain relief

,

G G

f

CN204

CN514

Audio input/output
board

Audio input/output
board

H

CN508

CN516

3.1.11 Removing the primary board
(See Fig.8)

• Remove the top cover.

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

cord from the connector CN203

(2) Disconnect the wires from the connector CN218 on the pri-

mary board.

(3) Remove the six screws H attaching the primary board on

the chassis base assembly.

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

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

3.1.12 Removing the power transformer
(See Fig.9)

• Remove the top cover.

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

bundling the wires.

Reference:

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

(2) Disconnect the wires from the connectors (CN201

on the main amplifier board.

(3) Disconnect the wire from the connector CN202

mary board.

(4) Remove the four screws J attaching the power transformer

on the chassis base assembly.

on the primary board.

, CN702)

on the pri-

Strain relief

J

CN204

Rear panel

Fig.8

Power transformer

J

Video
connect
board

CN201

g

CN702

1-8 (No.MB449)

CN205

Vol sel board

J

Chassis base assembly

Tie bands

Main amplifier board

Fig.9

3.1.13 Removing the fan motor

(See Fig.10)

• Remove the top cover.

(1) Form the top side of the main body, remove the tie bands

bundling the wires.

Reference:

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

(2) Disconnect the wire from the connector CN552

mother board.

(3) Remove the two screws K attaching the fan motor assem-

bly on the chassis base assembly.
(4) Take out the fan motor assembly from the main body.
(5) Remove the two screws M attaching the fan motor on the

fan holder.

on the input

Chassis base assembly

Tie bands

K

K

Fan holder

M

Fan motor

3.1.14 Removing the gate drive-1 board
(See Fig.11)

• Remove the top cover and DSP board.

From the top side of the main body, disconnect the connectors
(CN811
fier board in an upward direction.

3.1.15 Removing the speaker relay board

• Remove the top cover and DSP board.

Note:

3.1.16 Removing the vol IC board

• Remove the top cover and DSP board.

, CN911) on the gate drive-1 board from the main ampli-

(See Fig.11)

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

wire from the connector CN301

(2) Disconnect the speaker relay board from the main amplifier

board while releasing the claw j of the connector CN392 on
the main amplifier board.

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

(See Fig.11)

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

wire from the connector CN518

(2) Disconnect the vol IC board from the main amplifier board

while releasing the claw k of the connector CN501
input mother board.

Note:

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

(3) Disconnect the connector CN512

the main amplifier board in an upward direction.

on the speaker relay board.

on the vol IC board.

on the

on the vol IC board from

Input mother board

CN512

Vol IC board

CN518

Speaker relay board

Vol IC
board

CN501

Input mother board

CN552

Fig.10

Main amplifier board

CN911

k

j

CN319

Fig.11

Fan motor assembly

Gate drive-1 board

CN811

CN301

Speaker
terminal board

Speaker
relay board

Speaker
terminal board

(No.MB449)1-9

3.1.17 Removing the speaker terminal board
(See Fig.12)

• Remove the top cover, DSP board, S.S. setup board and

speaker relay board.
(1) Disconnect the wire from the connector CN751 on the

speaker terminal board.

(2) Disconnect the parallel wires from the connectors (CN701

CN801) on the speaker terminal board.

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

screws N attaching the speaker terminal board to the rear
panel and take out the speaker terminal board from the
main body.

3.1.18 Removing the video connect board
(See Fig.13)

• Remove the top cover and audio input/output board.

Disconnect the video connect board from the input mother board
while releasing the claw m of the connector CN506
mother board.

Note:

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

on the input

CN701

,

CN751

Speaker
terminal board

Rear panel

Fig.12

Video connect board

Input mother board

CN801

M

m

CN506

1-10 (No.MB449)

Input mother board

Video connect board

Fig.13

3.1.19 Removing the input mother board

(See Fig.14)

• Remove the top cover, rear panel, tuner, DSP board, vol sel

board, audio input/output board, vol IC board and video con­nect board.
(1) Remove the tie band fixing the wire.

Reference:

After reassembling, fix the wire with the new tie band as
before.

(2) Disconnect the wire from the connector CN725

setup board.

(3) Disconnect the wire from the connector CN751

speaker terminal board.

(4) Disconnect the parallel wire from the connector CN509

the input mother board.

(5) Disconnect the wires from the connectors (CN451

, CN552) on the input mother board.

CN540

(6) Remove the three screws P and take out the input mother

board.

on the S.S.

on the

on

, CN530,

P

CN451

CN540

Input mother board

CN509

CN530

CN751

P

Fig.14

S.S. setup board

CN725

Tie band

CN552

P

Speaker terminal board

(No.MB449)1-11

3.1.20 Removing the main amplifier board
(See Figs.15 and 16)

• Remove the top cover, tuner, DSP board, master clock board,

gate drive-2 board, S.S. setup board, gate drive-1 board and
vol IC board.
(1) Remove the tie bands bundling the wires. (See Fig.15.)

Reference:

• After reassembling, bundle the wires with the new tie
bands as before. (See Fig.15.)

• After reassembling, fix the support board with the new
tie bands as before. (See Fig.15.)

(2) Disconnect the parallel wires from the connectors (CN701

) on the speaker terminal board. (See Fig.15.)

CN801

(3) Disconnect the parallel wire from the connector CN301

the speaker relay board. (See Fig.15.)

(4) Disconnect the parallel wire from the connector CN509

the input mother board. (See Fig.15.)

(5) Disconnect the wires from the connectors (CN530

on the input mother board. (See Fig.15.)

(6) Disconnect the wire from the connector CN218

mary board. (See Fig.15.)

(7) Disconnect the parallel wire from the connector CN412 on

the regulator connect board. (See Fig.16.)

(8) Disconnect the parallel wire from the connector CN216

the headphone board. (See Fig.16.)

(9) Disconnect the wires from the connectors (CN201

on the main amplifier board. (See Fig.16.)

(10) Remove the four screws Q and three screws R and take

out the main amplifier board with the regulator and regula­tor connect boards from the main body. (See Fig.16.)

on the pri-

on

on

, CN540)

on

, CN702)

Primary board

Tie bands

,

CN218

CN540

CN530

Input mother board

Regulator connect board

CN201

Support board

Tie bands

CN509

Speaker terminal board

Speaker relay board

Fig.15

R R

CN412

Tie bands

Tie bands

CN801

CN301

CN701

CN216

Headphone board

CN702

Q

R

Q

Main amplifier board

Fig.16

1-12 (No.MB449)

3.1.21 Removing the regulator connect board
(See Fig.17)

• Remove the top cover, tuner, DSP board, master clock board,

gate drive-2 board, S.S. setup board, gate drive-1 board, vol IC
board and main amplifier board.
(1) From the forward side of the main amplifier board, discon-

nect the parallel wire from the connector CN705
ulator board.

(2) Disconnect the regulator connect board from the main am-

plifier board while releasing the claws (n, p) of the connec­tors (CN703

Note:

When releasing the claws (n, p), take care not to break them.

, CN704) on the main amplifier board.

on the reg-

Regulator
connect board

pn

CN704 CN703

Main amplifier board Main amplifier board

Regulator connect board

Regulator
connect board

3.1.22 Removing the regulator board
(See Fig.18)

• Remove the top cover, tuner, DSP board, master clock board,

gate drive-2 board, S.S. setup board, gate drive-1 board, vol IC
board, main amplifier board and regulator connect board.
(1) From the forward side of the main amplifier board, remove

the tie band fixing the wire.

Reference:

After reassembling, fix the wire with a new tie band as
before.

(2) From the front side of the main amplifier board, remove the

two screws S attaching the TR bracket to the heat sink.

3.1.23 Removing the regulator connect board
(See Fig.19)

• Remove the top cover, tuner, DSP board, master clock board,

gate drive-2 board, S.S. setup board, gate drive-1 board, vol IC
board, main amplifier board, regulator connect board and reg­ulator board.
(1) From the back side of the main amplifier board, remove the

four screws T attaching the FET bracket to the heat sink.

(2) Remove the cooling rubbers on the heat sink from the FET

bracket and remove the heat sink from the main amplifier
board in the direction of the arrow.

CN705

Main amplifier board

Regulator board

S

TR bracket

Cooling rubber

Regulator board

Fig.17

Heat sink

Tie band

S

Fig.18

Heat sink

Cooling rubbers

Main amplifier board

TT

FET bracket

Fig.19

(No.MB449)1-13

3.2 Front panel assembly section

• Remove the front panel assembly.
(See "3.1.2 Removing the front panel assembly".)

3.2.1 Removing the volume & JOG board

(See Figs.1 and 2)

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

four screws A and screw A' attaching the volume & JOG
board. (See Fig.1.)

Reference:

When attaching the screw A', attach the earth bracket
with it as before. (See Fig.1.)

(2) Take out the volume & 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 volume & JOG board, discon-

nect the wire from the connector CN413

. (See Fig.1)

Earth bracket

A

A'

Volume & JOG board

AA

A A

Headphone board

FL board

CN415

Front panel assembly

Fig.1

Support board

CN414

3.2.2 Removing the headphone board

(See Fig.1)

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

screw A attaching the support board.

(2) Take out the headphone board from the front panel assem-

bly.

3.2.3 Removing the FL board

(See Fig.1)

• Remove the volume & JOG board and headphone board.
(1) Remove the four screws A and take out the FL board form

the front panel assembly.

(2) From the forward side of the FL board, disconnect the wires

from the connectors (CN414

3.2.4 Removing the key & LED board

(See Fig.3)

• Remove the volume & JOG board, headphone board and FL
board.
(1) From the seven screws A attaching the key & LED board.
(2) Take out the key & LED board from the front panel assem-

bly.

, CN415).

Front panel assembly

Key & LED board

A

Master volume knob

Source selector knob

Fig.2

A

1-14 (No.MB449)

A

Front panel assembly

Fig.3

SECTION 4

ADJUSTMENT

This service manual does not describe ADJUSTMENT.

SECTION 5

TROUBLESHOOTING

This service manual does not describe TROUBLESHOOTING.

(No.MB449)1-15

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

(No.MB449)

Printed in Japan

VPT

SCHEMATIC DIAGRAMS

HOME CINEMA CONTROL CENTER

RX-F31S

CD-ROM No.SML200507

Area suffix

A ------------------------ Australia
US ------------------------ Singapore
UF ------------------------------ China
UJ ---------------------- U.S.Military

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
2-2
2-13 to 16

No.MB449SCH

2005/7

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.

Block diagram

5.1ch

MULTI

IN

Y/C IN
CV IN/OUT

Y/C IN
CV IN/OUT

Y/C IN
CV IN/OUT

VCR IN
VCR/DVD IN
MONITOR OUT

DVR IN/OUT

VCR IN/OUT

DBS/TV IN
MONITOR OUT

TO
TUNER

AV_COMPULINK

Audio/Video signal input/output
(Component/DVD multi) section

J6521

MULTI_SL/SR

MULTI_C

J6522

MULTI_SW

CV

IC351

Y/C

SEPA.

CKIN

IC359

CLOCK

GEN.

1270_SDA
1270_SCL

VCONT10

Y

IC352

REC_SY

AMP

SY

& SEL

C

IC353

REC_SC

AMP

SC

& SEL

VCONT10

CN514 CN516

VCONT1

J6511

VCONT4

CV_IN

IC555

SEL

REC_SY/SC

J6512

VCONT1
VCONT4

J6513

J4503

DVR_RECL/RECR

J6501

J6502

VCR_RECL/RECR

Y

C

Y/C SEL

Y

IC451

Y SEL.

PB

IC452

PB SEL.

PR

IC453

PR SEL.

DVR_L/R

VCR_L/R

DBS_L/R
TV_L/R

IC551
IC552

Y OUT

PB OUT

PR OUT

TU_L/R

SY

SC

M_OUT_CV

IC502

6CH

SW

J6503

MOUT_L/R

CN505

J505

MUTE

TU_MUTE

AV_LINK

IC507

EEPROM

TU_DATAI,TU_DATAO
TU_CLK,TU_CE,TU_MUTE

CN536

CN526

CN506CN504

CV

VCONT1

L,R

CN508

REC_SY

CV

OSD_SY
OSD_SC

OSD_SIN
OSD_SCLK
OSD_CS

SY

SC

CV_OUT

RC_SDA
RC_SCL

IC553

Y/C
MIX

CN525

IC362

SEL

IC360

OSD

IC501

CPU

SMART SETUP L/R
SMART SETUP C
SMART SETUP SL/SR
SMART SETUP SB

VCONT8VCONT9

IC356
IC357

AMP

& SEL

IC554

AMP

& SEL

VCONT5

TH1,TH2,LIMITTER
DA_PROTECTOR
CLK_F_CONT
REG_SAFETY,POWER
HP_RELAY,HP_SW
B_SW1,B_SW2

FAN
FAN_L

BLUE_LED
LED_DIMMER1
LED_DIMMER2
AV_LINK,M_CLK
M_COMMAND
M_STATUS,M_CS
M_BUSY,M_RESET

System control and audio/Video signal input/output section

CN521

C_RELAY
S_RELAY
F_RELAY
SB_RELAY

SBWFR OUT

DSP_STATUS
DSP_READY
DSP_RESET
DSP_COMMAND
DSP_CLK

TH1,TH2
LIMITTER
DA_PROTECTOR
CLK_F_CONT
REG_SAFETY
POWER

HP_RELAY
HP_SW
B_SW1
B_SW2

VIDEO+9V
VIDEO+5V
B+5V,A+5V
D+5V,+5V
TU+9V
+7V,-7V
+S2B

Q532
Q533
Q536

IC504

AMP

Vol. control section

CN501

CN518

IN.L
IN.R
SBWFR OUT

CN511

DSP_L/R,DSP_C,DSP_LFE
DSP_SL/SR,DSP_SB,IN.L,IN.R

CN611

IC503

6CH

VOLUME

DA,CL

IC508

AUDIO

SOUND

CPU

SBOUT

MUTE

SOURCE_MUTE

CN512

CN522

DSP and digital signal input terminal section

DSP_L,DSP_R
DSP_LS,DSP_RS

CN601

J504

SUBWOOFER
OUT

CN502

CN540 CN530CN509

DIGITAL

IN1

DIGITAL

IN2

DIGITAL

IN3

DIGITAL

OUT

DSP_C,DSP_LFE
DSP_SB

DSP_IN_L
DSP_IN_R

IC601,IC602

CN602

J681 UN682

RX0

RX1

UN683

RX2

UN686

TX

AMP.

IC611 to IC613

IC615,IC621,IC622

IC632 to IC634,IC651

AMP.

DSPSTATUS
DSPREADY
DSPRESET
DSPCOMMAND
DSPCLK

IC671

CPU

GPIO1,GPIO2
GPIO3,GPIO4

MOSI,MISO
SS,HREQ
DSP_RST

A1+/- to A4+/­B1+/- to B3+/-

CDIN,CDOUT
CCLK,D_CS
D_RST,INT

C_LRCK,S_LRCK
C_BCK,S_BCK
D/A0 to D/A3
DATA,MCK,XTAL

User control keys, system control and FL display section

JOG1,JOG2
VOL1,VOL2

CN403

CN413

BLUE_LED

TUNER_IND,TV_IND
DVD_MULTI_IND
VCR_G_IND,VCR_R_IND
VIDEO_G_IND,VIDEO_R_IND

CN414

CN404

DVD_G_IND,DVD_R_IND

REMOCON

CN405

KEY_IN1
KEY_IN2
KEY_IN3

IR DETECTOR

CN415

S401 to S406

FW715

CN705

SW control section

JS401
JS402

IC402

BLUE_LED

D408,D409

BLUE LED

STANDBY_IND

SW

+S2B,9.4V
VIDEO+7V
D+5V,A+5V,9.0V

IC851 to IC855

Q851 to Q858

SW CONT.

CN552

TO
FAN
MOTOR

CN451

SEG1 to 35
GRID1 to 13

DI401

FL

DISPLAY

CN401

JOG1
JOG2

IC401

VOL1
VOL2

CPU

&

FL DRV.

BLUE_LED

MCLK,M_CS
M_COMMAND
M_STATUS
M_BUSY
M_RESET
STANDBY_IND
BLUE_LED
KEY_IN1 to 3

LED_DIMMER1
LED_DIMMER2

Q403,Q411

DIMMER

CONT.

F1,F2

-VPP,5.0V

FW402

Regulator 2 section

Q211,Q212

D+5V REG.

VIDEO+5V

VIDEO+9V

9.0V REG.

Q226

REG.

Q227

REG.

Q202

+S2B

+S2B

+S2B

9.4V

Regulator, PWM modulator, digital power amplifier
and low pass filter section

FL,FR
SL,SR
C,SB

FM MODULATOR

LIN+/­RIN+/-

SCKMICK

IC673

INV

D412 to D415

BLUE LED

JOG/VOL.

D421 to D426

INDICATOR

D407

STANDBY LED

CN412

F1,F2

-VPP,5.0V

AC_ON/OFF
B_SW1,B_SW2
POWER_PWM
AMP_CLK,+12V

IC301,IC801

IC901

IC667

8CH

CODEC

IC661

DSP

CN714 CN713

CN520

CN510FW201

CN704 CN703

PWM_L/R
FB1_L/R
FB2_L/R

Q1901 to Q1904

CENTERch

SURROUND BACKch

PWM_C
PWM_SB
FB1_C,FB2_C
FB1_SB
FB2_SB

PWM_SL/SR
FB1_SL/SR
FB2_SL/SR

Q1801 to Q1804

SURROUND Lch/Rch

+S2B,-S2B

AMP_CLK

+5V
B+5V

9.0V

9.4V

+7V

-7V

A+5V

TU+9V

5.0V

+S2B

-VPP

B_SW1
B_SW2
AMP_CLK

F1,F2

-B+12V

CN321

CN311

CN921

CN911

CN821

CN811

Q203

+5V/B+5V

REG.

Q207,Q208

-7V/+7V REG.

Q213

A+5V REG.

Q210

TU+9V REG.

Q209

+5V REG.

Q205

-VPP REG.

AMP+B

AMP-B

Q722 to Q726

-B+12V REG.

POWER_PWM

+12V

IC311
IC312

AMP

Q1301 to Q1304
FRONT Lch/Rch

IC911
IC912

AMP

IC811
IC812

AMP

HP_SW
HP_RELAY

+S2B

Q703,Q704

AMP+B/AMP-B

IC701

+S2B

-S2B

+S2B

+S2B

+S2B

REG.

AMP

AC_ON/OFF

FL
FR

CLK_F_CONT
AMP_CLK

POWER

D201

to

D204

D208

to

D211

D231
D233
D234

+B

RY211

SL
SR

S2

S2

S3

D701

to

D704

HP_SW

C

SB

S1

+B

CN725

IC371

FW226

CN216

J7501

HEADPHONE
OUT

IC871
IC971

SMART

SURROUND

SETUP

CN728

FL,FR,C

S_RELAY
SB_RELAY

SL,SR
SB

CN727

FL,FR,C
SL,SR
SB

J7001

FW301

FW792

CN301

RY301
RY901

C_RELAY
F_RELAY

CN302

CN312

CN701

CN801

CN751

+S2B

-S2B

RY801
RY902

Speaker terminal and smart surround setup section

FW801

Master clock section

CN771

CN781

AMP_CLK
CLK_F_CONT

IC702,IC704,IC706

Master clock GEN.

Primary section

T202

Trans.

CN203

Main

plug

CN201 CN702CN208

FW721

CN204

Power

VS201

VOL. SEL.

trans.

CN205

CN218

RY201

+12V REG.

+B +12V

Q702

CN711

SPEAKER
TERMINAL

2-1

Standard schematic diagrams

Primary and regulator section

LVA10564-1

-B+12V

!

Q725

KTA1046/Y

-22.2V

-21.1V-22.9V

-21.7V-22.4V

D723

D724

D725

R760

680

R761

C744

100/16

100/16C745

Q726

2SC2812N/6

MTZJ10C

1SS133

1SS133

VERSION CODES

J :U.S.A.
C :CANADA
EN:NORDIC COUNTRIES
E :CONTINENTAL EUROPE
B :U.K.
EV:EAST EUROPEAN COUNTRIES
UP:KOREA
UJ:U.S. ARMY
US:SINGAPORE
UT:TAIWAN
A :AUSTRARIA
UF:CHINA
UX:SAUDI ARABIA

330

L701
220u

4.7k

MTZJ16BD726

R753

C742

47/25

-27.5V

5.6k

R754

(SHEET 3)

(SHEET 2), (SHEET 3)

(SHEET 3)

(SHEET 2)

(SHEET 3)

!

Q722

KTA1046/Y

0V-21.0V

P.GND

AMP+B

-B+12V

D.GND

HP_SW

THCOM

R757

AMP-B

R751

-0.3V

R756

220

1.2K

C743

R752

-2.0V

0V

R758

-27.5V
470

Q723

-28.0V

KTC3199/GL

470

-B

-B

AMP-B

P.GND

AMP+B

-B+12V

D.GND

+7V

+7V

-7V

-7V

+S2B

+S2B

AMP_CLK

CLK_F_CONT

HP_SW

HP_RELAY

PROTECT

TH1

TH1

THCOM

CN704
QGB2510J1-14

+S2B

1

2

0V

VIDEO+5V

3

D+5V

4

VIDEO+9V

5

TV DIRECT

6

REG_SAFETY

7

8

+5V

9

-VPP

10

F1

11

F2

12

D.GND

13

0V

14

CN703
QGB2510J1-10

AC_ON/OFF

1

B_SW2

2

B_SW1

3

4

POWER_PWM

5

+12V

6

7

0V

AMP_CLK

8

0V

9

10

ERA18-04

Q724

CLK_F_CONT

47K

D721

0.0047/50

KTC3199/GL

AMP_CLK

HP_RELAY

PROTECT

17.5V

5.1V

4.9V

8.7V

4.2V

3.6V

9.4V

9.0V

-25.8V

-19.3V

-19.4V

5.0V

-39.4V

4.5V

4.5V

2.3V

-59.5V

13.4V

32.0V

0.6V

TO CN713 OF LVA10566-3 (SHEET 5) TO CN714 OF LVA10566-3 (SHEET 5)

MTZJ6.2B

!

UNF

1 R759

(1/2W)

6.8KR755

100/50C741

D722

TO CN711 OF LVA10566-4 (SHEET 1)

R721

1k

R718

D720

Q705

31.1V2.3V

R719

R720

TH2

12345

1k

MA111

33.6V

39k

3300/50

47k

C722

C723

FW721

QQL77AK-220

3300/50

QQL77AK-220

528

3

6

C217

0.22u

0V0V

OMFR274

OMFR273

OMFR272

OMFR271

CN711

4

PW212

PW202

1.2K

1.2K

1.2K

1.2K

!

528

6

110V

R243

3.3M

3

!

2W
!

2W
!

2W
!

2W

32.0V0V0V

VOLTAGE SELECTOR LOCATION

1

7

4

F201

T1.6AL

PW211

PW201

!

!

0.001/250
C219

C218

R723

FR

10

59.5V

!

R713

UNF

6.8k
1/2W

59.8V

13.5V

12345

3

!

0.001/250

2SD2394/EF/

Q702

D714

1

7

QGA7901C1-02

QNZ0136-001Z

!

13.5V

12.9V
D718
MA111

UDZS13B

528

3

6

4

220V

!

CN203

EP201

100/16

C727

10/50 C715

528

6

127V

!

LVA10566-4

VOLTAGE MEASUREMENT CONDITION

POWER ON

SOURCE FM(NO SIGNAL)

SURROUND OFF

VOLUME 0

528

3

1

6

7

4

230-240V

!

LIVE/
BRN

2

2

1

1

NEUTRAL/
BLU

MAINS

PLUG

EP701

1/4W

R254

(1/4W)

QNZ0136-001Z

D701-D704

30PRA20-FC

R724

4.7

220/50

100k

100k

C241

D231
1A3G

MTZJ5.6C

C714

16.7V

Q218

0V

0V

FR

C705

-47.4V

44.3V

33.3V

32.0V

!

FR

!

UNF

9.7V

KRA102S

4.4V

C713

R236

10

KRA102S

Q219

KRC102S

0V

Q214

KRC102S

C753 0.22/100

!

!
D702

C754

0.22/100

-47.3V 0V

0.1/50

C712

1/50

1

Vcc

2

VB

3

HO

4

Vs

IC701 IRS2011S

TH201

!

4.7

(1/4W)

!

!

UNF

R237

3.3k

5.8V

4.5V

R225

10

(1/4W)

R226

1k

(1/4W)

Q215

D701

0.47/100

!

KTC1027/OY/

!

100/25

C711

(1/4W)

!

D704

D703

Q701

!

-46.8V
MA111
D717

!

D711
UDZS13B

-B+12V REGULATOR

LO

COM

LIN

HIN

C704

FR R711

10

1/2W
UNFR712

6.8k

-58.0V

8

-60.1V

7

-59.3V

6

5

C740

C703

0.47/100

0.1/160

C739

1/16

R726

1k

NI

1A3G

D222

R223

1k

R224
100k

5.6V

3.6V

3.6V

Q221

KRC111S

+B

C755

1/50

C701

R705

6800/68

C757

1/50

C756

1/50

C702

R706

6800/68

C758

1/50

R714

33

R727

4.7

R715

33

C243

100/100

C242

100/100

R238

5.0V

R239
100k

10

R227

39k

4.5V

R228

47k

-B

UNF

D712 1SS133

0.33/50

D719

1SS133

D233

!

1A3G

D234

!

1A3G

!

A+5V

!

Q213

2SD2394/EF/

5.2V

1k

C224

100/16

C226

1000/25

TUNER +9V

2SD2394/EF/

9.0V

9.7V

5.8V

D220

!

Q210

16.5V

D218

MTZJ10B

5.6V

C223

!

2SD2394/EF/

6.3V

100/16

QGA3901C1-03

CN702

S1

1

1

COM

2

2

S1

3

3

C751

C752

1/100

1/100

W701

GND

AC 44.1V

AC 0V

AC 44.1V

!

POWER

POWER

TRANSFORMER

TRANSFORMER

127V

LVA10566-7

17V

QGA2501C1-04

CN218

D202
1A3G

!

1

2

3

1

2

3

4

!

QQT0281-006

0V

127V

110V

0V

TH.FUSE

TH.FUSE

TH.FUSE

TH.FUSE

123456789

123456789

S3

S3

!

-19.1V

-19.1V

7.0V

C222

100/16

!

Q208

2SD2394/EF/

7.6V

KTA1046/Y

!

C215

16.4V

MTZJ7.5C

-25.8V

F203

Q205

-26.1V

47/50

!

(1/4W)

FR

R218

!

1.5k
(1/4W)

UNF

D216

C212

0.047MY

C213

0.047MY

R208

100k

C214
1/50

!

Q209

(1/4W)

FR

16.6V

R222

!

3.3k
(1/4W)

UNF

D217

MTZJ6.2C

R207

!

12

(1/4W)

UNF

R209

!

10

(1/4W)

UNF

-18.9V

Q204

KTC3200/GL/

-24.8V

D224

MTZJ6.2C

R221

10

R219

22k

R220

47k

4.4V

3.5V

3.6V

Q220

KRC111S

AC14.8V

R217

8.2

CN201

QGA3901C1-09

S2

S2

COM

0V

AC14.8V

!

T2AL

T2AL

F202

D208

D209

1A3G

!
D210
1A3G

C210

4700/25

!

Q207

KTA1046/Y

-7.0V

-7.6V

1A3G

C208

!

0.1MY
(100V)

!

1000/25

!

UNF

D215

UDZS7.5B

C209

(1/4W)

0.1MY

(100V)

D211
1A3G

C211

-19.8V

R215

!

10

FR

R216

1.5k
(1/4W)

R242

2.2k

!

-18.9V

-51.0V

UNF

!

(1/2W)

D223

MTZJ27B

FR

!

(1/4W)

C207

0.1MY

(100V)

17.2V

R210

10

R211

5.6k

C221

100/16

CN208

1

1

2

2

9.8V
3

3

4.4V
4

4

C202

0.0047/100

!
D201
1A3G

!

!

D204

D203

1A3G

1A3G

C203

220/63

!

CN204

1

2

3

!

CN205

1

2

3

4

!

F204

T100mAL

T202

D205

1SS133

Q203

KTC3203/OY

9.8V

5.7V

820R206

!

6.3V

R245

C205

0.0047

(1/4W)

UNF

C206

470/16

2.2

(1/4W)

UNF

D207

MTZJ6.2C

D212
1A3G

D213
1A3G

1

7

VS201

!

QSW0812-001

1

7

4

!

F205

T3.15AL

!

C201

!

0.0047

!

RY201

QSK0142-001

Q201

KRC105S

4.4V

QGA2001C1-05

!

FROM FW721 OF LVA10564-1 (SHEET 1)

EP202

QNZ0136-001Z

1/4W

D706

R707

3.3k
1SS133

!

1W

2SK3599

UNF

R716

10

Q703

D

C728

0.0022/50

C716

UNFR728

C734

C736

R729

C735

R717101W

C717

0.0022/50

TH302

UNF

(1/4W)

10

0.0022/50

1W

10

C737

C729

!

Q224

KRC111S

1W

0.0022/50

0.0022/50

0.0022/50

R253

S

0.0022/50

!

D715

D716

0.0022/50

D

S

2.2

Q222

FMB-G19L

!

FMB-G19L

!

Q704
2SK3599

KRC111S

G

UNF

G

4.3V

4.3V

!

UNF

3.7V

3.6V

L702

22u

0.1/100

C718

C720

0.47/50

C719

0.1/100

C721

0.47/50

L703

22u

QAD0146-103

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

2-2

HP_SW

B_SW1

HP_RELAY

123

FW201

0V

0V

FROM CN509 OF LVA10576-1 (SHEET 7)

4.7V

TH2

B_SW2

THCOM

123456789

4

0V

CN520

4.7V

TH1

PROTECT

CLK_F_CONT

123456789

10

0V

4.8V0V5.1V

5.1V

1.6V

D+5V

POWER

TU+9V

REG SAFTY

3.5V

4.4V

TV DIRECT

4.5V

+7V

VIDEO+9V

VIDEO+5V

-7V

8.5V

7.0V

4.9V

5.1V

8.9V

-7.1V

TO CN530 OF LVA10576-1 (SHEET 7)TO CN540 OF LVB10576-1 (SHEET 7)

CN510

10

11

+5V

+S2B

A+5V

D.GND

0V

4.9V B+5V

5.0V

5.0V

17.3V

17.2V0V-19.8V

5.1V

12345

0.6V

FW792

TO CN701 OF LVA10564-2 (SHEET 4)

SHEET 1