JVC RX-6040-B Service manual
SERVICE MANUAL
AUDIO/VIDEO CONTROL RECEIVER
MB15920042
RX-6040B
Area suffix
J ----------------------------- U.S.A.
C -------------------------- Canada
TA/NEWS/INFO
DISPLAY MODE
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15
COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED
No.MB159
2004/2
SPECIFICATION
Amplifier
Output Power
At Stereo operation Front channels 100 W per channel, min. RMS, driven into 8
At Surround operation Front channels 100 W per channel, min. RMS, driven into 8
Center channel 100 W, min. RMS, driven into 8
Surround channels 100 W per channel, min. RMS, driven into 8
Audio
Audio Input Sensitivity/Impedance (1 kHz) CD, TAPE/CDR, VCR, TV SOUND, DVD:220 mV/47 k
Audio Input (DIGITAL IN)* Coaxial DIGITAL 1 (DVD):0.5 V(p-p)/75 Ω
Optical DIGITAL 2 (CD), DIGITAL 3 (TV):-21 dBm to -15 dBm (660 nm ±30 nm)
* Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency-32 kHz, 44.1 kHz, 48 kHz)
Recording Output Level TAPE/CDR, VCR:220 mV
Signal-to-Noise Ratio ('66 IHF/'78 IHF) CD, TAPE/CDR, VCR, TV SOUND, DVD:87 dB/74 dB
Frequency Response (8
Bass Boost +3 dB ±1 dB at 100 Hz
Equalization (5 bands) 63 Hz, 250 Hz, 1 kHz, 4 kHz, 16 kHz:±8 dB (in 2 dB steps)
Video
Video Input Sensitivity/Impedance Composite video:DVD, VCR 1 V(p-p)/75
Video Output Level Composite video:VCR, MONITOR OUT 1 V(p-p)/75 Ω
Synchronization Negative
Signal-to-Noise Ratio 45 dB
Tuning Range 87.5 MHz to 108.0 MHz
Usable Sensitivity Monaural:12.8 dBf (1.2 -V/75
50 dB Quieting Sensitivity Monaural:16.0 dBf (1.7 -V/75
Stereo Separation at OUT (REC) 35 dB at 1 kHz
Tuning Range 530 kHz to 1 710 kHz
Power Requirements AC 120V , 60 Hz
Power Consumption 180 W/230 VA (at operation), 2 W (in standby mode)
Dimensions (W
Mass 8.8 kg (19.5 lbs)
× H × D) 435 mm × 146.5 mm × 409.5 mm (17 3/16 in. × 5 13/16 in. × 16 1/8 in.)
Ω) CD, TAPE/CDR, VCR, TV SOUND, DVD:20 Hz to 50 kHz (+1 dB, -3 dB)
S-video:DVD, VCR (Y: luminance):1 V(p-p)/75 Ω
ComponentDVD, VCR (Y: luminance):1 V(p-p)/75 Ω
S-video:VCR, MONITOR OUT (Y: luminance):1 V(p-p)/75 Ω
ComponentMONITOR OUT (Y: luminance):1 V(p-p)/75
Stereo:37.5 dBf (20.5 -V/75
0.8% total harmonic distortion.
harmonic distortion.
Ω, at 1 kHz with no more than 0.8% total harmonic
distortion.
harmonic distortion.
Ω
Ω
(C: chrominance, burst):0.286 V(p-p)/75 Ω
(PB, PR):0.7 V(p-p)/75 Ω
:0.286 V(p-p)/75 Ω
(C: chrominance, burst)
(PB, PR)0.7 V(p-p)/75 Ω
FM tuner (IHF)
Ω)
Ω)
Ω)
AM tuner
General
Ω, 40 Hz to 20 kHz with no more than
Ω, at 1 kHz with no more than 0.8% total
Ω, at 1 kHz with no more than 0.8% total
Ω
Designs and specifications are subject to change without notice.
1-2 (No.MB159)
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, 1,000
in the following manner. Connect a 1,500
paralleled by a 0.15
exposed metal part and a known good earth ground.
Measure the AC voltage across the resistor with the AC
Ω per volt or more sensitivity
Ω 10W resistor
µF AC-type capacitor between an
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.MB159)1-3
1.5 Importance administering point on the safety
Primary part
Secondary parts
F 201
6.3A-125V
F 203
F 202
2A-125V
2A-125V
1-4 (No.MB159)
Caution: For continued protection against risk of
fire, replace only with same type 6.3A/125V for
F201, 2A/125V for F202 and F203.
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
que 6.3A/125V, et 2A/125V pour F202 et F203.
Ce sont des fusibles suretes qui functionnes rapide.
^
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.MB159)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.
Top cover
2
B
1
3.2 Removing the front panel assembly (See Figs.2 and 3)
• Prior to performing the following procedure, remove the top
cover.
(1) Disconnect the card wire from the connector CN402
audio board. (See Fig.2)
(2) Disconnect the card wire from the connector CN201
power supply board. (See Fig.2)
(3) Remove the tie bands. (See Fig.2)
(4) Remove the wire protection board fixing the card wire. (See
Fig.2)
(5) Remove the three screws C attaching the front panel
assembly. (See Fig.2)
(6) From the bottom 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
arrow. (See Fig.3)
on the
on the
Tie
band
Wire
protection
board
Card
wire
CN402
Audio board
D
1
A
A
Fig.1
Front panel assembly
C C C
Power supply board
Fig.2
Card wire
Front panel assembly
CN201
D
1-6 (No.MB159)
Fig.3
3.3 Removing the rear panel
f
(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
relief from the rear panel in the direction of the arrow.
(2) Remove the twenty-seven screws E and four screws F
attaching the rear panel.
E
F
E
E
Strain relie
3.4 Removing the component board and tuner unit
(See Figs.5 and 6)
• Prior to performing the following procedure, remove the top
cover.
(1) From the top side of the main body, disconnect the parallel
wire from the connector CN511
Fig.5)
(2) From the back side of the main body, remove the four
screws G attaching the component board. (See Fig.6)
(3) From the top side of the main body, disconnect the card
wire from the connector CN1
(4) From the back side of the main body, remove the two
screws H attaching the tuner unit. (See Fig.6)
on the S-Video board. (See
on the tuner unit. (See Fig.5)
Rear panel
S-Video board
Tuner
F
Fig.4
CN511
Parallel wire
Fig.5
FE
CN1
Component board
GH
Fig.6
(No.MB159)1-7
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, Remove the tie band.
(2) Disconnect the DSP board from the connector CN481
the audio board.
(3) Disconnect the audio input board from the connector
on the audio board.
CN421
(4) Disconnect the DVD board from the connector CN431
the audio board.
(5) Disconnect the video board from the connector CN441
the audio board.
on
on
on
CN481
DSP
board
Video board
Audio boardDVD board
3.6 Removing the S-Video board (See Fig.8)
• Prior to performing the following procedure, remove the top
cover and rear panel.
(1) From the top side of the main body, disconnect the parallel
wire from the connector CN511
(2) Disconnect the S-Video board from the connector CN461
on the audio board.
on the S-Video board.
Audio
input
board
CN421
CN431
Audio board
CN461
CN441
Fig.7
S-Video board
CN511
Fig.8
1-8 (No.MB159)
3.7 Removing the audio board (See Fig.9)
• Prior to performing the following procedure, remove the top
cover, rear panel, component video board, DSP board, audio
input board, DVD board, video board, S-Video board and tuner
unit.
(1) From the top side of the main body, disconnect the card
wire from the connector CN402
(2) Disconnect the relay board from the connector CN491 on
the audio board.
(3) Disconnect the wires from the connectors CN471
and CN473 on the audio board.
(4) Remove the three screws J attaching the audio board.
(5) Loosen the screw K attaching the audio board.
on the audio board.
, CN472
Relay board
Audio board
J
Power supply board
J
K
3.8 Removing the speaker terminal board (See Fig.10)
• Prior to performing the following procedure, remove the top
cover and rear panel.
(1) From the top side of the main body, remove the solders
from the soldered sections a on the speaker terminal
board.
CN402
Speaker terminal board
CN471
CN473
Fig.10
CN472
Fig.9
Soldered sections a
CN491
Parallel
wires
(No.MB159)1-9
3.9 Removing the main board (See Fig.11)
• 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) 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 power supply board and audio 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 audio board.
(8) Remove the screw L, two screws M and four screws N
attaching the main board.
(9) Take out the main board.
3.10 Removing the heat sink (See Figs.12 and 13)
• Prior to performing the following procedure, remove the top
cover and main board.
(1) Remove the ten screws P attaching the heat sink. (See
Fig.12)
(2) From the reverse side of the main board, remove the two
screws Q attaching the heat sink. (See Fig.13)
on
on the
, CN472
Wire
protection
board
Tie
,
band
N
Relay
board
Main
board
Tie
band
N
N
M
L
Card
wire
CN473
Audio
board
Heat sink
CN472
CN471
CN492
Fig.11
CN241
Soldered
section b
Power
transformer
board 1
Speaker
terminal
Power
supply
board
CN251
CN291
Tie
bands
Parallel
wires
M
Tie
band
board
P
1-10 (No.MB159)
Main board
Q
P
Fig.12
Heat sink
Q
Main board
Fig.13
3.11 Removing the center amp. board, front amp. boards (L/R) and rear amp. boards (L/R)
r
(See Figs.12 and 14)
• Prior to performing the following procedure, remove the top
cover and main board.
(1) Remove the ten screws P attaching the heat sink. (See
Fig.12)
(2) Disconnect the center amp. board from the connector
on the main board. (See Fig.14)
CN321
(3) Disconnect the front amp. board (L) from the connector
on the main board. (See Fig.14)
CN311
(4) Disconnect the front amp. board (R) from the connector
on the main board. (See Fig.14)
CN312
(5) Disconnect the rear amp. board (L) from the connector
on the main board. (See Fig.14)
CN331
(6) Disconnect the rear amp. board (R) from the connector
on the main board. (See Fig.14)
CN332
3.12 Removing the power transformer
(See Fig.15)
• 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) 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
power transformer board 1.
(5) Remove the four screws R attaching the power
transformer.
3.13 Removing the power/fuse board
(See Fig.15)
• Prior to performing the following procedure, remove the top
cover.
(1) From the back and top sides of the main body, remove the
screw S and screw T 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.
on the
Rear amp.
Tie band
Rear amp.
board (L)
Front amp.
board (R)
CN332 CN331 CN312 CN311 CN321
Power transformer board 1
board (R)
R
R
Soldered
sections d
Front amp.
Fig.14
board (L)
CN251
Center amp.
board
Main board
Soldered
section c
Tie band
R
Power
transformer
R
Power
transforme
T
board 2
Soldered
sections f
Power/Fuse
board
(No.MB159)1-11
Power cord
Fig.15
S
Soldered
sections e
3.14 Removing the power supply board (See Fig.16)
• 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
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) Disconnect the parallel wire from the connector CN101
the headphone jack board.
(5) Remove the solders from the soldered section c on the
power transformer board 1.
(6) Remove the two screws U and the screw V attaching the
power supply board.
(7) Remove 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.
3.15 Removing the headphone jack board (See Figs.16 and 17)
• 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
board. (See Fig.16)
(2) From the front side of the main body, remove the nut and
screw W attaching the bracket(phones) to the chassis
base. (See Fig.17)
and CN241 on the power
on the
on
on
on the headphone jack
CN241
Parallel
wires
CN203
CN291
Relay
board
Hook g of the
chassis base bracket
Nut
Card wire
CN201
U
Fig.16
Headphone jack board
Power supply board
Headphone jack
board
Power transformer board 1
Bracket(phones)
CN101
Parallel
wire
U
Soldered
section h
V
Soldered
section c
W
Chassis base
Fig.17
1-12 (No.MB159)
3.16 Removing the system control board and power switch board
Y
(See Figs.18 and 19)
• Prior to performing the following procedure, 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 X attaching the system control board. (See
Fig.19)
(3) Remove the solders of the soldered section j on the system
control board and disconnect the parallel wire. (See Fig.19)
(4) Remove the two screws Y attaching the power switch
board. (See Fig.19)
Front panel assembly
X
System control board
Nut
Volume knob
Jog knob
Fig.18
Front panel assembly
Parallel wire
X
Soldered section j
Fig.19
X
Power switch board
(No.MB159)1-13
SECTION 4
ADJUSTMENT
4.1 Tuner section
4.1.1 Tuner range
FM : 87.5 MHz to 108.0 MHz
AM : 530 kHz to 1710 kHz
4.2 Power amplifier section
4.2.1 Adjustment of idling current
Measurement location : TP301
Adjustment part : VR301
Attention :
This adjustment does not obtain a correct adjustment value immediately after the amplifier is used (state that an internal temperature
has risen).
Please adjust immediately after using the amplifier after turning off the power supply of the amplifier and falling an internal
temperature.
Adjustment method
(1) Set the volume control to minimum during this adjustment. (No signal & No load)
(2) Set the surround mode OFF.
(3) Turn VR301
and VR302 fully counterclockwise to warm up before adjustment.
If the heat sink is already warm from previous use the correct adjustment can not be made.
(4) For L-ch, connect a DC voltmeter between TP301
(Rch).
(5) Adjust the VR301 (Lch) and VR302 (Rch) so that the DC voltmeter indicates 2.0mV immediately after turning the power on.
(Lch) , TP302 (Rch)
(Lch) , VR302 (Rch)
's B216 and B217 (Lch) and, connect it between TP302's B218 and B219
• It is not abnormal though the idling current might not become 0mA even if it is finished to turn variable resistance (VR301
in the direction of counterclockwise.
VR301 (Lch)
Front amp. board (L)
TP301
VR301
CN301
TP301 (Lch)
VR302 (Rch)
Front amp. board (R)
TP302
VR302
CN302
TP302 (Rch)
, VR302)
1-14 (No.MB159)
SECTION 5
TROUBLESHOOTING
This service manual does not describe TROUBLESHOOTING.
(No.MB159)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.MB159)
Printed in Japan
WPC
SCHEMATIC DIAGRAMS
AUDIO/VIDEO CONTROL RECEIVER
RX-6040B
CD-ROM No.SML200402
Area suffix
J ----------------------------- U.S.A.
C -------------------------- Canada
Contents
Block diagram
Standard schematic diagrams
Printed circuit boards
TA/NEWS/INFO
DISPLAY MODE
2-1
2-3
2-19 to 25
COPYRIGHT 2004 VICTOR COMPANY OF JAPAN, LTD.
No.MB159SCH
2004/2
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.)
< MEMO >
Loading...