JVC RX-5040-B Service manual
SERVICE MANUAL
AUDIO/VIDEO CONTROL RECEIVER
MB26920046
RX-5040B
Area suffix
UJ ---------------------- U.S.Military
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
COPYRIGHT © 2004 Victor Company of Japan, Limited
No.MB269
2004/6
SPECIFICATION
Amplifier
Output Power At Stereo operation Front channels 100 W*1 per channel, min. RMS, driven into 8 Ω, at 1 kHz with no
more than 0.8% total harmonic distortion (IEC268-3/DIN).
At Surround operation Front channels 100 W per channel, min. RMS, driven into 8 Ω, at 1 kHz with no more
than 0.8% total harmonic distortion.
Center channel 100 W, min. RMS, driven into 8 Ω, at 1 kHz with no more than 0.8%
total harmonic distortion.
Surround channels 100 W per channel, min. RMS, driven into 8 Ω, at 1 kHz with no more
than 0.8% total harmonic distortion.
Audio Audio Input Sensitivity/Im-
pedance (1 kHz)
Audio Input (DIGITAL IN)*2 Coaxial DIGITAL 1 (DVD):0.5 V(p-p)/75 Ω
Audio Input Sensitivity/Impedance (1 kHz)
Recording Output Level TAPE/CDR, VCR:220 mV
Signal-to-Noise Ratio('66
IHF/DIN)
Frequency Response (8 Ω) CD, TAPE/CDR, VCR, TV SOUND, DVD:20 Hz to 50 kHz (+1 dB, -3 dB)
Equalization (5 bands) 63 Hz, 250 Hz, 1 kHz, 4 kHz, 16 kHz:±8 dB (in 2 dB steps)
Video Video Input Sensitivity/Im-
pedance
Video Output Level Composite video VCR, MONITOR OUT:1 V(p-p)/75 Ω
Synchronization Negative
Signal-to-Noise Ratio 45 dB
Tuning Range 87.50 MHz to 108.00 MHz
Usable Sensitivity Monaural:12.8 dBf (1.2 µV/75 Ω)
50 dB Quieting Sensitivity Monaural:16.0 dBf (1.7 µV/75 Ω)
Stereo Separation at OUT (REC) 35 dB at 1 kHz
Tuning Range 531 kHz to 1 602 kHz (at 9 kHz intervals)
Power Requirements AC 110 V/127 V/220 V/230 V - 240 V , adjustable with the voltage selector, 50 Hz/60 Hz
Power Consumption 210 W (at operation) 4.5 W (in standby mode)
Dimensions (W × H × D) 435 mm × 146.5 mm × 369.5 mm
Mass 8.0 kg
CD, TAPE/CDR, VCR, TV SOUND, DVD:220 mV/47 kΩ
Optical DIGITAL 2 (CD):-21 dBm to -15 dBm (660 nm ±30 nm)
CD, TAPE/CDR, VCR, TV SOUND, DVD:87 dB/62 dB
Composite video DVD, VCR:1 V(p-p)/75 Ω
FM tuner (IHF)
Stereo:37.5 dBf (20.5 µV/75 Ω)
AM tuner
530 kHz to 1 600 kHz (at 10 kHz intervals)
General
*1: Measured on AC 110 V, 127 V, 220 V, and 240 V
*2: Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency -32 kHz, 44.1 kHz, 48 kHz)
Designs and specifications are subject to change without notice.
1-2 (No.MB269)
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.MB269)1-3
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
1-4 (No.MB269)
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
main board. (See Fig.2.)
(3) Remove the tie band and wire protection board fixing the
card wire. (See Fig.2.)
(4) Remove the three screws C attaching the front panel as-
sembly. (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 ar-
row. (See Fig.3.)
on the
on the
Top cover
Tie band
Wire
protection
board
Card wire
CN402
2
1
A
Fig.1
Front panel assembly
C
C
Main board
B
1
A
C
Card wire
CN201
Front board
Fig.2
Front panel assembly
DD
Fig.3
(No.MB269)1-5
3.3 Removing the rear panel (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 re-
lief from the rear panel in the direction of the arrow.
(2) Remove the twenty-one screws E attaching the rear panel.
(3) Remove the two screws F attaching the rear panel.
E
E
E
Strain relief
F
3.4 Removing the tuner (See Figs.5 and 6)
• Prior to performing the following procedures, remove the top
cover.
(1) From the back side of the main body, remove the two
screws G attaching the tuner to the rear panel. (See Fig.5.)
(2) From the top side of the main body, disconnect the card
wire from the connector CN411
Fig.6.)
(3) Take out the tuner.
on the front board. (See
Rear panel
Rear panel
EEE
Fig.4
G
Fig.5
1-6 (No.MB269)
Front board
Card wire
CN411
Tuner
Fig.6
3.5 Removing the DSP board, audio input board, DVD board and video board (See Fig.7)
• 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
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
on
DVD board
CN481
DSP
board
CN482
Video board
Front board
3.6 Removing the front board (See Fig.8)
• 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 main board and front board.
(3) Disconnect the wires from the connectors (CN471
CN473) on the front board.
(4) Remove the two screws H attaching the front board.
(5) Loosen the screw J attaching the front board.
(6) Take out the front board from the main body.
3.7 Removing the speaker terminal board (See Fig.9)
• 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,
Audio
input board
CN471
CN473
Card wire
H
CN402
CN421
CN472
Front board
CN441
CN431
Fig.7
Relay board
H
Fig.8
Main board
CN291
J
CN491
Parallel wires
Soldered sections a
Speaker terminal board
Fig.9
(No.MB269)1-7
3.8 Removing the power amplifier board
r
(See Fig.10)
• 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 wire protection board fixing the
card wire.
(3) Remove the solders from the soldered section b on the
speaker terminal board attaching the parallel wires.
(4) Disconnect the relay board from the connectors (CN291
CN491) on the main board and front board.
(5) Disconnect the parallel wire from the connector CN241
the main board.
(6) Disconnect the wire from the connector CN251
er transformer board 1.
(7) Disconnect the wires from the connectors (CN471
CN473) on the front board.
(8) Remove the screw J, two screws K and four screws L at-
taching the power amplifier board.
(9) Take out the power amplifier board from the main body.
3.9 Removing the heat sink
(See Figs.11 and 12)
• Prior to performing the following procedures, remove the top
cover and power amplifier board.
(1) Remove the three screws M attaching the heat sink. (See
Fig.11)
(2) From the reverse side of the power amplifier board, remove
the two screws N attaching the heat sink. (See Fig.12)
on the pow-
on
, CN472,
,
Wire
protection
board
Tie
band
L
K
Card
wire
CN473
Front
board
CN471
Heat sink
Power amplifier board
Relay board
L
Tie bands
CN491
CN472
Soldered section b
Fig.10
L
CN241
Main board
Tie band
CN251
CN291
Power
transforme
board 1
J
Parallel
wires
Speaker
terminal
board
M
3.10 Removing the power ICs
(See Figs.12)
• Prior to performing the following procedures, remove the top
cover, power amplifier board and heat sink.
(1) From the reverse side of the power amplifier board, remove
the solders from the soldered sections c on the power amplifier board.
(2) Remove the power ICs from the forward side of the power
amplifier board.
Power amplifier board
Soldered section c
N
Power IC
Fig.11
Heat sink
N
Power amplifier board
Fig.12
1-8 (No.MB269)
3.11 Removing the voltage selector board
r
(See Figs.13 and 14)
• Prior to performing the following procedure, remove the top
cover.
(1) From the back side of the main body, remove the two
screws P attaching the voltage selector board. (See Fig.13)
(2) Remove the solders from the soldered sections d on the
power transformer board 2. (See Fig.14)
(3) Remove the tie band fixing the wires. (See Fig.14)
(4) Take out the voltage selector board.
P
Rear panel
Fig.13
Power transforme
board 2
Voltage selector
board
3.12 Removing the power transformer (See Fig.15)
• Prior to performing the following procedures, remove the top
cover and voltage selector board.
(1) From the top side of the main body, remove the tie bands
fixing the wires.
(2) Remove the solders from the soldered section e on the
power transformer board 1.
(3) Remove the solders from the soldered sections f on the
power transformer board 2.
(4) Disconnect the wire from the connector CN251
er transformer board 1.
(5) Remove the four screws Q attaching the power transform-
er.
(6) Take out the power transformer from the main body.
3.13 Removing the power/fuse board (See Fig.15)
• Prior to performing the following procedures, remove the top
cover and voltage selector board.
(1) From the back and top sides of the main body, remove the
screw R and screw S attaching the power/fuse board.
(2) Remove the solders from the soldered sections g attaching
the power cord.
(3) From the reverse side of the power/fuse board, remove the
solders from the soldered sections h attaching the wires.
on the pow-
Soldered sections d
Power
transformer
board 1
Q
Q
Power
transformer
board 2
Soldered sections f
Power cord
Fig.14
Tie band
Fig.15
CN251
Soldered
sections g
R
Tie bands
Soldered
section e
Q
Power transformer
Q
S
Soldered
sections h
Power / Fuse board
(No.MB269)1-9
3.14 Removing the main board (See Fig.16)
• 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
board.
(2) Disconnect the card wire from the connector CN201
main board.
(3) Disconnect the relay board from the connector CN291
the main 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 i on the
power transformer board 1.
(7) Remove the three screws T and screw U attaching the
main board.
(8) From the reverse side of the main board, remove the sol-
ders from the soldered sections j attaching the wires.
3.15 Removing the headphone jack board (See Figs.16 and 17)
• 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 fix-
ing the parallel wire. (See Fig.16)
(2) Disconnect the parallel wire from the connector CN101
the headphone jack board. (See Fig.16)
(3) From the front side of the main body, remove the special
nut and screw V attaching the bracket (phones) to the front
bracket. (See Fig.17)
, CN241) on the main
on the
on
on
on
CN241
Parallel wires
CN203
CN291
T
Relay board
Special nut
T
Card wire
Fig.16
Headphone jack board
Main board
CN201
Power transformer board 1
Bracket(phones)
Parallel wire
Tie band
CN101
Headphone
jack board
T
Soldered
section j
U
Soldered
section i
V
Front bracket
Fig.17
1-10 (No.MB269)
3.16 Removing the system control board and power switch board (See Figs.18 and 19)
• 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.18)
(2) From the back side of the front panel assembly, remove the
nine screws W attaching the system control board. (See
Fig.19)
(3) Disconnect the parallel wire from the connector CN714
the power switch board. (See Fig.19)
(4) Take out the system control board from the front panel as-
sembly.
(5) Remove the two screws X attaching the power switch
board. (See Fig.19)
(6) Take out the power switch board from the front panel as-
sembly.
on
Front panel assembly
Parallel wire
W
Nut
Volume knob
Jog knob
Fig.18
Front panel assembly
CN714
W
System control board
Fig.19
X
W
Power switch board
(No.MB269)1-11
SECTION 4
ADJUSTMENT
This service manual does not describe ADJUSTMENT.
1-12 (No.MB269)
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.
(No.MB269)1-13
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