SERVICE MANUAL
COPYRIGHT © 2003 VICTOR COMPANY OF JAPAN, LIMITED
No.22023
2003/6
HOME THEATER DVD-AUDIO/VIDEO RECEIVER
22023
2003
6
RX-DV31SL
TABLE OF CONTENTS
1
PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
5
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
6
DESCRIPTION OF MAJOR ICS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-23
Area suffix
J ----------------------------- U.S.A.
C -------------------------- Canada
DVD/SUPER VCD/VCD/CD
COMPAC T
SUPERVIDE
O
RX-DV31 HOME THEATER DVD-AUDIO/ VIDEO RECEIVER
1-2 (No.22023)
SPECIFICATION
Amplifier
Output Power
At Stereo operation
Front channels
100 W per channel, min. RMS, driven into
8
, 40 Hz to 20 kHz with no more than
0.8% total harmonic distortion.
At Surround operation Front channels
100 W per channel, min. RMS, driven into
8
at 1 kHz, with no more than 0.8% total
harmonic distortion.
Center channel
100 W, min. RMS, driven into 8
at 1 kHz,
with no more than 0.8% total harmonic
distortion.
Surround channels
100 W per channel, min. RMS, driven into
8
at 1 kHz, with no more than 0.8% total
harmonic distortion.
Audio
Audio Input Sensitivity/
Impedance (1 kHz)
TV, TAPE/CDR, DBS, VCR
240 mV/47 k
Audio Input (DIGITAL IN)*
Coaxial
DIGITAL 1 (DBS)
0.5 V(p-p)/75
Optical
DIGITAL 2 (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).
Signal-to-Noise Ratio
('66 IHF/'78 IHF)
TV, TAPE/CDR, DBS, VCR
87 dB/67 dB
Frequency Response (8
)
TV, TAPE/CDR, DBS, VCR
20 Hz to 20 kHz (±1 dB)
Tone Control
Bass (100 Hz)
±10 dB ±2 dB
Treble (10 kHz)
±10 dB ±2 dB
Video
Video Input
Sensitivity/
Impedance
(1 kHz)
Composite
video
DBS IN, VCR IN
1 V(p-p)/75
S-video
DBS IN, VCR IN
(Y:luminance)
1 V(p-p)/75
(C:chrominance)
0.286 V(p-p)/75
Video Output
Level/Impedance
(1 kHz)
Composite
video
VCR OUT, MONITOR OUT
1 V(p-p)/75
S-video
VCR OUT, MONITOR
OUT
(Y:luminance)
1 V(p-p)/75
(C:chrominance)
0.286 V(p-p)/75
Component
video
DVD COMPONENT
VIDEO OUT
(Component-Y)
1.0 V(p-p)/75
(Component-PB/PR) 0.7 V(p-p)/75
Color System NTSC
Horizontal
Resolution
500 lines
Signal-to-
Noise Ratio
(S/N)
63 dB
Synchronize
Negative
FM tuner
(IHF)
Tuning Range
87.5 MHz to 108.0 MHz
AM tuner
Tuning Range
530 kHz to 1 710 kHz
General
Power
Requirements
AC 120 V , 60 Hz
Power
Consumption
200 W/255 VA (in operation)
2 W (in standby mode)
Dimensions
(W
× H × D)
435 mm
× 100 mm × 403.5 mm
(17 3/16 in.
× 3 15/16 in. × 15 15/16 in.)
Mass
8.4 kg (18.5 lbs)
(No.22023)1-3
SECTION 1
PRECAUTION
1.1
Safety Precautions
(1) This design of this product contains special hardware and
many circuits and components specially for safety purpos-
es. 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 per-
formed 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 characteris-
tics are often not evident from visual inspection nor can the
protection afforded by them necessarily be obtained by us-
ing replacement components rated for higher voltage, watt-
age, etc. Replacement parts which
have these special
safety characteristics are identified in the Parts List of Ser-
vice 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 charac-
teristics 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 reassem-
bling.
(5) Leakage shock hazard testing
After reassembling the product, always perform an isola-
tion check on the exposed metal parts of the product (an-
tenna 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, particular-
ly any exposed metal part having a return path to the
chassis, to a known good earth ground. Any leakage cur-
rent 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
per volt or more sensitivity
in the following manner. Connect a 1,500
10W resistor
paralleled by a 0.15
µF 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
µ
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 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 pre-
forming 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)
Good earth ground
Place this
probe on
each exposed
metal part.
AC VOLTMETER
(Having 1000
ohms/volts,
or more sensitivity)
1500
10W
0.15 F AC TYPE
1-4 (No.22023)
1.5
Importance administering poin on the safety
F132
F131
F101
Caution: For continued protection against risk of
fire, replace only with same type 5A/125V for
F101, 2A/125V for F131 and F132.
This symbol specifies type of fast operating fuse.
Precaution: Pour eviter risques de feux, remplacez
le fusible de surete de F101 comme le meme type
que 5A/125V, et 2A/125V pour F131 et F132.
Ce sont des fusibles suretes qui functionnes rapide.
^
Main board (Forward side)
Power board (Forward side)
(No.22023)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.