Designs and specifications are subject to change without notice.
1-2 (No.MB171)
SECTION 1
PRECAUTION
1.1Safety 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
1.2Warning
(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.
1.3Caution
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.
1.4Critical 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.MB171)1-3
1.5Importance administering point on the safety
Primary part
(Power / Fuse board)
Secondary parts
(Power transformer board 1)
F201
6.3A-125V
F206
F207
F202
F203
2A-125V
5A-125V
5A-125V
2A-125V
Caution: For continued protection against risk of
fire, replace only with same type 6.3A/125V for
F201, 2A/125V for F202 and F203, 5 A/125 V for
F206 and F207.
This symbol specifies type of fast operating fuse.
Precaution: Pour eviter risques de feux, remplacez
le fusible de surete de F201 comme le meme type
1-4 (No.MB171)
que 6,3 A/125 V, 2 A/125 V pour F202 et F203, et
5 A/125 V pour F206 et F207.
Ce sont des fusibles suretes qui functionnes rapide.
^
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.MB171)1-5
SECTION 3
DISASSEMBLY
3.1 Removing the top cover
(See Fig.1)
(1) From the right and left sides 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 the top cover in the direction of the arrow 2 while
extending the lower sections of the top cover in the
direction of the arrow 1.
3.2 Removing the front panel assembly
(See Figs.2 and 3)
• Prior to performing the following procedures, remove the top cover.
(1) Disconnect the card wire from the connector CN402
front board. (See Fig.2.)
(2) Disconnect the card wire from the connector CN201
power supply board. (See Fig.2.)
(3) Remove the tie band and remove the wire protection board
fixing the card wire. (See Fig.2.)
(4) Remove the three screws C attaching the front panel
assembly. (See Fig.2.)
(5) From the bottom side of the main body, remove the four
screws D attaching the front panel assembly. (See Fig.3.)
(6) Remove the front panel assembly in the direction of the
arrow. (See Fig.3.)
Wire protection board
Front panel assembly
on the
on the
2
Top cover
1
B
1
A
A
Fig.1
Front panel assembly
DD
Tie band
C
CN402
1-6 (No.MB171)
Card wire
C
Card wire
Power supply board
Front board
Fig.2
CN201
C
Fig.3
3.3 Removing the rear panel
Strainrelief
(See Fig.4)
• Prior to performing the following procedures, remove the top
cover.
(1) From the back side of the main body, remove the strain
relief from the rear panel in the direction of the arrow.
(2) Remove the twenty-one screws E attaching the rear panel.
E
Rear panel
3.4 Removing the tuner
(See Fig.5)
• Prior to performing the following procedures, remove the top
cover.
(1) Disconnect the card wire from the connector CN411
front board.
(2) Take out the tuner.
3.5 Removing the DSP board, audio input board, DVD board and video board
(See Fig.6)
• Prior to performing the following procedures, remove the top
cover and rear panel.
(1) From the top side of the main body, disconnect the DSP
board from the connector CN481
board.
(2) Disconnect the audio input board from the connector
on the front board.
CN421
(3) Disconnect the DVD board from the connector CN431
the front board.
(4) Disconnect the video board from the connector CN441
the front board.
and CN482 on the front
on the
CN481
on
on
Card wire
Audio input board
DSP board
E
Fig.4
CN411
Tuner
Fig.5
Video board
DVD board
CN482
CN421
CN441
CN431
Fig.6
Front board
(No.MB171)1-7
3.6 Removing the front board
(See Fig.7)
• Prior to performing the following procedures, remove the top
cover, rear panel, DSP board, audio input board, DVD board,
video board and tuner.
(1) From the top side of the main body, disconnect the card
wire from the connector CN402
(2) Disconnect the relay board from the connectors (CN291
CN491) on the power supply board and front board.
(3) Disconnect the wires from the connectors CN471
and CN473 on the front board.
(4) Remove the two screws F attaching the front board.
(5) Loosen the screw G attaching the front board.
(6) Take out the front board from the main body.
3.7 Removing the speaker terminal board
(See Fig.8)
• Prior to performing the following procedure, remove the top
cover and rear panel.
From the top side of the main body, remove the solders from
the soldered sections a on the speaker terminal board.
on the front board.
, CN472
Power supply board
Card wire
,
CN471
CN473
Relay board
CN472
CN291
F
G
CN402
Front board
CN491
F
Fig.7
Parallel wires
1-8 (No.MB171)
Soldered sections a
Speaker terminal board
Fig.8
3.8 Removing the main board
r
(See Fig.9)
• Prior to performing the following procedures, remove the top
cover.
(1) From the top side of the main body, remove the tie bands
fixing the wires.
(2) Remove the tie band and remove the wire protection board
fixing the card wire.
(3) Remove the solders from the soldered sections b on the
speaker terminal board attaching the parallel wires.
(4) Disconnect the relay board from the connectors (CN291
CN491) on the power supply board and front board.
(5) Disconnect the parallel wire from the connector CN241
the power supply board.
(6) Disconnect the wire from the connector CN251
power transformer board 1.
(7) Disconnect the wires from the connectors CN471
and CN473 on the front board.
(8) Remove the screw G, two screws H and four screws J
attaching the main board.
(9) Take out the main board from the main body.
on
on the
, CN472
Wire protection board
Tie band
,
J
K
Card wire
Main board
J
Tie bands
Relay board
J
Power supply board
CN241
Tie band
CN251
CN291
Power
transforme
board 1
G
3.9 Removing the heat sink
(See Figs.10 and 11)
• Prior to performing the following procedures, remove the top
cover and main board.
(1) Remove the three screws K attaching the heat sink. (See
Fig.10.)
(2) From the reverse side of the main board, remove the two
screws L attaching the heat sink. (See Fig.11.)
3.10 Removing the power ICs
(See Figs.11)
• Prior to performing the following procedures, remove the top
cover, main board and heat sink.
(1) From the reverse side of the main board, remove the
solders from the soldered sections c on the main board.
(2) Take out the power ICs.
CN473
Front board
Heat sink
Main board
CN491
CN471
CN472
Soldered sections b
Soldered section c
Parallel wires
Speaker terminal board
Fig.9
K
Power IC
Fig.10
Heat sink
L
Main board
Fig.11
(No.MB171)1-9
L
3.11 Removing the power transformer
r
(See Fig.12)
• Prior to performing the following procedures, remove the top
cover.
(1) From the top side of the main body, remove the tie bands
fixing the wires.
(2) Remove the solders from the soldered section d on the
power transformer board 1.
(3) Remove the solders from the soldered sections e on the
power transformer board 2.
(4) Disconnect the wire from the connector CN251
power transformer board 1.
(5) Remove the four screws M attaching the power
transformer.
(6) Take out the power transformer from the main body.
3.12 Removing the power/fuse board
(See Fig.12)
• Prior to performing the following procedures, remove the top
cover.
(1) From the back and top sides of the main body, remove the
screw N and screw P attaching the power/fuse board.
(2) Remove the solders from the soldered sections f attaching
the power cord.
(3) From the reverse side of the power/fuse board, remove the
solders from the soldered sections g attaching the wires.
on the
Power transformer board 1
Tie band
CN251
M
M
Power
transformer
board 2
Soldered sections e
Soldered sections g
Power cord
Soldered section d
Power transforme
Soldered sections g
N
Power / Fuse board
Soldered sections f
Fig.12
M
M
P
1-10 (No.MB171)
3.13 Removing the power supply board
(See Fig.13)
• Prior to performing the following procedures, remove the top
cover.
(1) From the top side of the main body, disconnect the parallel
wires from the connectors CN203
supply board.
(2) Disconnect the card wire from the connector CN201
power supply board.
(3) Disconnect the relay board from the connector CN291
the power supply board.
(4) Remove the tie band fixing the parallel wire.
(5) Disconnect the parallel wire from the connector CN101
the headphone jack board.
(6) Remove the solders from the soldered section d on the
power transformer board 1.
(7) Remove the three screws Q and screw R attaching the
power supply board.
(8) From the reverse side of the power supply board, remove
the solders from the soldered sections h attaching the
wires.
3.14 Removing the headphone jack board
(See Figs.13 and 14)
• Prior to performing the following procedures, remove the top
cover and front panel assembly.
(1) From the top side of the main body, remove the tie band
fixing the parallel wire. (See Fig.13)
(2) Disconnect the parallel wire from the connector CN101
the headphone jack board. (See Fig.13)
(3) From the front side of the main body, remove the special
nut and screw S attaching the bracket (phones) to the front
bracket. (See Fig.14)
and CN241 on the power
on the
on
on
on
CN241
Parallel wires
CN203
CN291
Q
Relay board
Special nut
Q
Card wire
CN201
Soldered section d
Power transformer board 1
Fig.13
Headphone jack board
Bracket(phones)
Power supply board
Parallel wire
Tie band
CN101
Headphone
jack board
Q
Soldered
section h
R
S
Front bracket
Fig.14
(No.MB171)1-11
3.15 Removing the system control board and power switch board
(See Figs.15 and 16)
• Prior to performing the following procedures, remove 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.15)
(2) From the back side of the front panel assembly, remove the
nine screws T attaching the system control board. (See
Fig.16)
(3) Disconnect the parallel wire from the connector CN714
the power switch board. (See Fig.16)
(4) Take out the system control board from the front panel
assembly.
(5) Remove the two screws U attaching the power switch
board. (See Fig.16)
(6) Take out the power switch board from the front panel
assembly.
on
Front panel assembly
Fig.15
Parallel wire
T
Nut
Volume knob
Jog knob
Front panel assembly
CN714
T
System control board
Fig.16
U
T
Power switch board
1-12 (No.MB171)
SECTION 4
ADJUSTMENT
This service manual does not describe ADJUSTMENT.
(No.MB171)1-13
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.
1-14 (No.MB171)
(No.MB171)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.MB171)
Printed in Japan
WPC
SCHEMATIC DIAGRAMS
AUDIO/VIDEO CONTROL RECEIVER
RX-5042S
CD-ROM No.SML200403
Area suffix
J ----------------------------- U.S.A.
C -------------------------- Canada
Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
COPYRIGHT 2004 VICTOR COMPANY OF JAPAN, LTD.
2-1
2-3
2-15 to 21
No.MB171SCH
2004/3
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.
(This regulation does not correspond to J and C version.)
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