JVC RX-5032-VSL Service manual
SERVICE MANUAL
AUDIO/VIDEO CONTROL RECEIVER
2203820034
RX-5032VSL
MASTER VOLUME
DIMMER
INPUT ATT
TA/NEWS/INFO
DISPLAY MODE
RXÐ6030V
STANDBY
STANDBY/ON
PHONES
DIGITAL
PRO LOGIC
AUDIO/VIDEO CONTROL RECEIVER
INPUT DIGITAL
INPUT ANALOG
Area Suffix
E ----- Continental Europe
EN ----- Northern Europe
TABLE OF CONTENTS
1 Important Safety Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
2 Disassembly method . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
3 Adjustment. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10
4 Description of major ICs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LTD.
No.22038
2003/4
SECTION 1
Important Safety Precautions
1.1 Safety Precautions
(1) This d esign of this product co ntains 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 o f the design or circuitry of the p roduct 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, watt age, etc. Replacement parts which have these special safety
characteristics are identified in the Parts List of Service Manual. Electrical components having such feat ures are id en tified 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, 1,000 ohms per volt or more sensitivity in
the following manner. Connect a 1,500 ohm 10W resistor
paralleled by a 0.15 µF 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.).
1.2 Warning
(1) This equipment has been designed and manufactured to
meet international safety standards.
(2) It is the leg al 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 a re 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 o f the same type
and rating as specified by the manufacturer. (Except the JC version)
1-2 (No.22038)
SECTION 2
y
Disassembly method
2.1 Removing the top cover
(See Fig.1)
(1) From the righ t and left sid es of the main body, remove the
four screws A attaching the top cover.
(2) From the back side of the main body, remove the three
screws B attaching the top cover.
(3) Remove th e top cover in the direction of the arrow 2 whi le
extending the lower sections of the top cover in the direction of the arrow 1.
Top cover
2
B
1
2.2 Removing the front panel assembly
(See Figs.2 and 3)
• Prior to performing the following procedure, re move the top
cover.
(1) Disconnect the card wire from the connector CN402 on the
audio board. (See Fig.2)
(2) Disconnect the card wire from the connector CN201 on the
power supply board. (See Fig.2)
(3) Remove the tie band and wire protection board fixing the
card wire. (See Fig.2)
(4) Remove the tie band fixing the parallel wires, disconnect
the parallel wire from the connector CN403 on the audio
board. (See Fig.2)
(5) Remove the three screws C attaching the front panel as-
sembly. (See Fig.2)
(6) From the b ottom side of the main body, remove the four
screws D attaching the front panel assembly. (See Fig.3)
(7) Remove the front panel assembly in the direction of the ar-
row. (See Fig.3)
1
A
A
Fig.1
Front panel assembly
C C C
Tie band
Wire protection
board
Card wire
CN402
Audio board
Card wire
CN201
Power suppl
board
Tie band
CN403
Fig.2
Front panel assembly
DD
Fig.3
(No.22038)1-3
2.3 Removing the rear panel
A
A
(See Fig.4)
• Prior to performing the following procedure, 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.
(2) Remove the seventeen screws E and four screws F attach-
ing the rear panel.
E
F
E
Strain relief
F
Rear panel
2.4 Removing the DSP board, audio input board, DVD board and video board
(See Fig.5)
• Prior to performing the following procedure, remove the top
cover and rear panel.
(1) From the top side of the main body, disconnect the DSP
board from the connector CN481 on the audio board.
(2) Disconnect the audio input board from the connector
CN421 on the audio board.
(3) Disco nnect the DVD board from the connector CN431 on
the audio board.
(4) Disco nnect the video bo ard from the connector CN44 1 on
the audio board.
DVD board
CN481
DSP board
udio input board
CN421
Fig.4
Video board
CN441
CN431
Fig.5
EFF
Audio board
2.5 Removing the tuner board
(See Fig.6)
• Prior to performing the following procedure, remove the top
cover and rear panel.
(1) Disconnect the tuner board from the connectors CN411
and CN412 on the audio board.
1-4 (No.22038)
CN412
CN411
Tuner board
udio board
Fig.6
2.6 Removing the audio boar d
(See Fig.7)
• Prior to performing the following procedure, re move the top
cover, rear panel, DSP board, audio input board, DVD board,
video board and tuner board.
(1) From the top side of the main body, disconnect the card
wire from the connector CN402 on the audio board.
(2) Disconnect the parallel wire from the connector CN403.
(3) Disconn ect the relay board from the connector CN4 91 on
the power supply board and audio board.
(4) Disconn ect the wires from the con nectors CN471, CN472
and CN473 on the audio board.
(5) Remove the three screws G attaching the audio board.
(6) Loosen the screw H attaching the audio board.
CN471
CN473
rd wire
G
CN472
Relay board
CN403
2.7 Removing the speaker terminal board
(See Fig.8)
• Prior to performing the following procedure, re move the top
cover and rear panel.
(1) From th e top side of the main body, remove the solders
from the soldered sections a on the speaker terminal
board.
CN402
Audio board
Fig.7
Parallel wires
CN491
G
Soldered sections a
Fig.8
Speaker terminal board
(No.22038)1-5
2.8 Removing the main board
r
(See Fig.9)
• Prior to performing the following procedure, remove the top cover.
(1) From the top side of the main body, remove the tie bands fixing the wires.
(2) Remo v e the tie band and wire protection board fixing the card wire.
(3) Remov e the solders from the soldered section b on the speaker terminal board attaching the parallel wires.
(4) Di sco nnect the relay board from the connectors (CN291, CN491) on the power supply board and audio board.
(5) Disco nnect the parallel wire from the connector CN241 on the power supply board.
(6) Disco nnect the wire from the connector CN251 on the power transformer board 1.
(7) Disconnect the wires from the connectors CN471, CN472 and CN473 on the audio board.
(8) Remove the screw H, two screws J and four screws K attaching the main board.
(9) Take out the main board.
Relay board
Power supply board
CN241
Tie band
CN251
Tie band
Wire protection
board
K
Main board
Tie bands
K
K
J
Card wire
CN473
Audio board
CN471
CN472
CN491
Soldered section b
Fig.9
CN291
Power transforme
board 1
H
Parallel wires
Speaker terminal board
1-6 (No.22038)
2.9 Removing the heat sink
(See Figs.10 and 11)
• Prior to performing the following procedure, re move the top
cover and main board.
(1) Remove the ten screws L attaching the heat sink. (See
Fig.10)
(2) From the reverse side of the main board, re move the two
screws M attaching the heat sink. (See Fig.11)
2.10Removing the center amp. board, front amp. boards (L /
R) and rear amp. boards (L/R)
(See Figs.10 and 12)
• Prior to performing the following procedure, re move the top
cover and main board.
(1) Remove the ten screws L attaching the heat sink. (See
Fig.10)
(2) Remove the four screws N attachin g the heat sink. (See
Fig.12)
(3) Disconnect the center amp. board from the connector
CN321 on the main board. (See Fig.12)
(4) Disconnect the front amp. board (L) from the connector
CN311 on the main board. (See Fig.12)
(5) Disconn ect the front amp. board (R) from the connector
CN312 on the main board. (See Fig.12)
(6) Disconnect the rear amp. board (L) from the connector
CN331 on the main board. (See Fig.12)
(7) Disconnect the rear amp. board (R) from the connector
CN332 on the main board. (See Fig.12)
Heat sink
Main board
M
L
L
Fig.10
Heat sink
M
Rear amp. board (L)
Rear amp. board (R)
Heat sink
N
CN332 CN331 CN312 CN311 CN321
Main board
Fig.11
Front amp. board (R)
Front amp. board (L)
Center amp. board
N
Main board
Fig.12
(No.22038)1-7
2.11Removing the power transformer
r
(See Fig.13)
• Prior to performing the following procedure, remove the top
cover.
(1) From the top side of the main b ody, remove the tie bands
fixing the wires.
(2) Remove the solders from the soldered section c on the
power transformer board 1.
(3) Remove the solders from the soldered sections d on the
power transformer board 2.
(4) Disconnect the wire from the connector CN251 on the pow-
er transformer board 1.
(5) Remov e the four screws P attaching th e power transform-
er.
2.12Removing the power/fuse board
(See Fig.13)
• Prior to performing the following procedure, remove the top
cover.
(1) From the back and top sides of the main body, remove the
screw Q and screw R attaching the power/fuse board.
(2) Remove the solders from the soldered sections e attaching
the power cord.
(3) From the reverse side of the power/fuse board, remove the
solders from the soldered sections f attaching the wires.
2.13Removing the power supply board
(See Fig.14)
• Prior to performing the following procedure, remove the top
cover.
(1) From the top side of the main body, disconnect the parallel
wires from the connectors CN203 and CN241 on the power
supply board.
(2) Disconnect the card wire from the connector CN201 on the
power supply board.
(3) Disco nnect the relay board from the connector CN291 on
the power supply board.
(4) Disco nnect the paral lel wire from the connecto r CN10 1 on
the headphone jack board and remove the tie band.
(5) Remove the solders from the soldered section c on the
power transformer board 1.
(6) Remove the three screws S attaching the power supply
board.
(7) Remo ve the power supply board from the hook g of the
chassis base bracket in the direction of the arrow, take out
the power supply board.
(8) Turn over the power supply board, remove the solders from
the soldered sections h attaching the wires.
2.14Removing the headphone jack board
(See Figs.14 and 15)
• Prior to performing the following procedure, remove the top
cover and front panel assembly.
(1) From the top side of the main body, disconnect the parallel
wire from the connector CN101 on the headphone jack
board. (See Fig.14)
(2) From th e front side of the main body, remove the nut and
screw T attaching the Bracket(phones) to the chassis base.
(See Fig.15)
Power transformer board 1
Tie band
P
P
Soldered sections d
Power cord
CN241
Parallel wires
CN203
CN291
Relay board
Hook g of the
chassis base bracket
Nut
S
T
CN251
Soldered section c
Tie band
P
Power transformer
P
Power transforme
board 2
R
Soldered sections f
Power / Fuse board
Soldered sections e
Q
Fig.13
Card wire
Fig.14
Headphone jack board
Power supply board
CN201
Power transformer board 1
Parallel wire
CN101
Headphone jack
board
Soldered section h
Soldered section c
Bracket(phones)
S
S
1-8 (No.22038)
Chassis base
Fig.15
2.15Removing the system control board and power switch board
(See Figs.16 and 17)
• Prior to performing the following procedure, re move the top
cover and front panel assembly.
(1) Pull out the volume and jog knobs from the front side of the
front panel assembly, remove the nut attaching the system
control board. (See Fig.16)
(2) From the back side of the front panel assembly, remove the
nine screws U attaching the system control board. (See
Fig.17)
Reference:
Remove the solders of the soldered section I as required.
(3) Remove the solders of the soldered section i on the system
control board and disconnect the parallel wire. (See Fig.17)
(4) Remove the two screws V attaching the power switch
board. (See Fig.17)
Front panel assembly
U
System control board
Nut
Volume knob
Jog knob
Fig.16
Front panel assembly
Parallel wire
U
Soldered section i
Fig.17
V
U
Power switch board
(No.22038)1-9
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