JVC RX-DP15B Service Manual
SERVICE MANUAL
AUDIO/VIDEO CONTROL RECEIVER
MB23720046
RX-DP15B
Area suffix
J ---------------------------- U.S.A.
C ------------------------- Canada
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
COPYRIGHT © 2004 Victor Company of Japan, Limited
No.MB237
2004/6
SPECIFICATION
Amplifier Output Power At Stereo operation
(Analog Direct On)
At Surround operation
(Analog Direct On)
Audio Audio Input Sensitivity/
Impedance (1 kHz)
Audio Input
(DIGITAL IN)*1
Audio Output Level ZONE 2 PREOUT:200 mV
Recording Output Level TAPE/MD OUT, CDR OUT, VCR 1 OUT, VCR 2 OUT200 mV
Digital output Optical:DIGITAL OUT
Signal-to-Noise Ratio
('66 IHF/'78 IHF)
(Analog Direct On)
Frequency Response
(8 Ω)
PHONO IN (MM):2.5 mV/47 kΩ
CD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN:200 mV/47 kΩ
DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO:200 mV/47 kΩ
Coaxial:1(DVD), 2(CD), 3(TV/DBS):0.5 V(p-p)/75 Ω
Optical:4(CDR), 5(MD), 6(VCR1):-21 dBm to -15 dBm (660 nm ±30 nm)
PREOUT:1 V
Signal wave length:660 nm
Output level:-21 dBm to -15 dBm
PHONO IN (MM):72 dB/80 dB (at REC OUT)
CD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN:92 dB/80 dB
DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO:92 dB/80 dB
PHONO IN (MM):20 Hz to 20 kHz (±1 dB)
CD IN, CDR IN, TAPE/MD IN, EXT 7.1CH IN:10 Hz to 100 kHz (+1 dB, -3 dB)
DVD IN, VCR 1 IN, VCR 2 IN, TV SOUND/DBS IN, VIDEO:10 Hz to 100 kHz (+1 dB, -3 dB)
RIAA Phono Equalization:±1.0 dB (20 Hz to 20 kHz)
Front ch 120 W per channel, min. RMS, driven into 8 Ω, 20 Hz
to 20 kHz with no more than 0.02% total harmonic distortion.
120 W per channel, min. RMS, driven into 4 Ω, 20 Hz
to 20 kHz with no more than 0.07% total harmonic distortion.
Front ch 120 W per channel, min. RMS, driven into 8 Ω, 20 Hz
to 20 kHz with no more than 0.02% total harmonic distortion.
Center ch 120 W, min. RMS, driven into 8 Ω, 20 Hz to 20 kHz with
no more than 0.02% total harmonic distortion.
Surround ch 120 W per channel, min. RMS, driven into 8 Ω, 20 Hz
to 20 kHz with no more than 0.02% total harmonic distortion.
Surround back ch 120 W per channel, min. RMS, driven into 8 Ω, 20 Hz
to 20 kHz with no more than 0.02% total harmonic distortion.
*1: Corresponding to Linear PCM, Dolby Digital, and DTS Digital Surround (with sampling frequency - 32 kHz, 44.1 kHz, 48 kHz)
Design and specifications are subject to change without notice.
1-2 (No.MB237)
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.MB237)1-3
1.5 Importance administering point on the safety
Power supply / fuse board
2A-125V
F43
F41
500mA-200V
Power 2 board
8A-125V
F21
2A-125V
F42
Power 1 board
1-4 (No.MB237)
Caution: For continued protection against risk of fire,
replace only with same type 8 A/125 V for F21,
500 mA/200 V for F41, 2 A/125 V for F42 and F43.
This symbol specifies the type of fast operating fuse.
Precaution: Pour la protection continue contre les
risques d'incendie, remplacer uniquement par le
^
meme type: fusible 8 A/125 V pour le F21,
500 mA/200 V pour le F41, et 2 A/125 V pour les
F42 et F43.
Ce symbole specifie le type de fusible a action rapide.
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
(No.MB237)1-5
SECTION 3
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the top cover
(See Fig.1)
(1) From the back sides of the main body, remove the three
screws A attaching the top cover.
(2) From the both sides of the main body, remove the four
screws B attaching the top cover.
(3) Take out the top cover upward in the direction of the arrow.
Top cover
B
B
B
A
Fig.1
1-6 (No.MB237)
3.1.2 Removing the front panel assembly
(See Figs.2 to 5)
• Prior to performing the following procedure, remove the top
cover.
(1) From the top side of the main body, cut off the tie bands fix-
ing the wire. (See Fig.2)
(2) Remove the three screws C attaching the front panel as-
sembly. (See Fig.2)
(3) Remove the screw D attaching the lug wire. (See Fig.2)
(4) From the bottom side of the main body, remove the four
screws E attaching the front panel assembly and take out
the front panel assembly forward. (See Fig.3)
(5) From the front side of the main body, disconnect the wire
from the connectors CN971
on the system control board. (See Fig.4)
(6) From the reverse side of the front panel assembly, discon-
nect the wire from the connector CN973
board. (See Fig.5)
(7) Disconnect the wire from the connector CN373
DIGITAL in board. (See Fig.5)
Reference:
• When attaching the screws C, attach the earth wire with it.
(See Fig.2)
• When attaching the screws D, attach the lug wire with it.
(See Fig.2)
, CN977, CN983 and CN985
on the front AV in
on the front
Lug wire
D
E
C
Front panel assembly
Tie bands
Fig.2
CN973
Front panel
assembly
Fig.3
System control board
CN985
CN971CN977CN983
Fig.4
CN373
Front AV in board
Front DIGITAL in board
Fig.5
(No.MB237)1-7
3.1.3 Removing the rear panel
(See Fig.6)
• Prior to performing the following procedure, remove the top
cover.
(1) From the top side on the main body, remove the screw F
attaching the rear panel.
(2) From the bottom side on the main body, remove the four
screws G attaching the rear panel.
(3) From the back side on the main body, remove the fifty-two
screws H attaching each board to the rear panel.
Reference:
When attaching the screws F, attach the lug wire with it.
Rear panel
F
H
H
Nat a Strain relief
H
H
H
H
H H
HH
H
3.1.4 Removing the V compo 2 board, RF remote unit, tuner unit and compu link board
(See Figs.7 and 8)
• Prior to performing the following procedure, remove the top
cover.
(1) From the top side of the main body, disconnect the card
wire from the connector CN581
(See Fig.7)
(2) From the back side of the main body, remove the two
screws J attaching V compo 2 board to the rear panel. (See
Fig.8)
(3) From the top side of the main body, disconnect the wire
from the connector CN1
(4) From the back side of the main body, remove the nut a at-
taching the RF remote unit to the rear panel. (See Fig.8)
(5) From the top side of the main body, disconnect the card
wire from the connector CN1
(6) From the back side of the main body, remove the two
screws K attaching the tuner unit to the rear panel. (See
Fig.8)
(7) From the top side of the main body, disconnect the wire
from the connector CN301
Fig.7)
(8) From the back side of the main body, remove the four
screws L attaching the compu link board to the rear panel.
(See Fig.8)
3.1.5 Removing the audio 7.1ch in board
(See Figs.7 and 8)
• Prior to performing the following procedure, remove the top
cover.
(1) From the top side of the main body, cut off the tie band fix-
ing the wire. (See Fig.7)
(2) Disconnect the wire from the connector CN201
dio signal 1 board. (See Fig.7)
(3) From the back side of the main body, remove the two
screws M attaching the audio 7.1ch in board to the rear
panel. (See Fig.8)
on the RF remote unit. (See Fig.7)
on the V compo 2 board.
on the tuner unit. (See Fig.7)
on the compu link board. (See
on the au-
CN201
Tie bands
Audio signal
1 board
V compu 2 board
Rear panel
G
CN581
G GH
Fig.6
RF remote unitAudio 7.1ch in board
Fig.7
Nat a
M
J K L
CN1
CN1
CN301
Compu link
board
Tuner unit
1-8 (No.MB237)
Fig.8
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