JVC UX-S15B Manuale utente
SERVICE MANUAL
COPYRIGHT © 2007 Victor Company of Japan, Limited No.MB630
2007/9
MICRO COMPONENT SYSTEM
MB63020079SERVICE MANUAL
UX-S15B, UX-S15E, UX-S15EN,
UX-S15EV
COPYRIGHT © 2007 Victor Company of Japan, Limited
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14
EV only
CA-UXS15SP-UXS15 SP-UXS15
SERVICE POLICY
No service part is available for this model.
Exchange only.
1-2 (No.MB630)
SPECIFICATION
Design and specifications are subject to change without notice.
Amplifier section Output Power
5 W per channel min. RMS driven into 4
Ω
at 1 kHz with no more than 10% total harmonic
distortion. (IEC268-3)
Speakers/Impedance 4 Ω- 8 Ω
Tuner section FM tuning range 87.50 MHz - 108.00 MHz
AM (MW) tuning range 522 kHz - 1 629 kHz
CD player section Dynamic range 60 dB
Signal-to-noise ratio 60 dB
Wow and flutter Immeasurable
Cassette deck section
Frequency response Normal (type I): 125 Hz - 8 kHz
Wow and flutter 0.35% (WRMS)
General Power requirement AC 230 V , 50 Hz
Power consumption 26 W (at operation)
0.9 W (on standby)
Dimensions (approx.) 141 mm ×211 mm ×216 mm (W/H/D)
Mass (approx.) 2.6 kg
Speakers Type 1-way Bass reflex
Speaker units 10 cm cone ×1
Impedance 4 Ω
Dimensions (approx.) 136 mm ×212 mm ×178 mm (W/H/D)
Mass (approx.) 1.3 kg each
(No.MB630)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, 1,000Ωper volt or more sensitivity
in the following manner. Connect a 1,500Ω10W 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.).
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.MB630)
1.5 Safety Precautions (U.K only)
(1) This design of this product contains special hardware and many circuits and components specially for safety purposes. For con-
tinued protection, no changes should be made to the original design unless authorized in writing by the manufacturer. Replace-
ment parts must be identical to those used in the original circuits.
(2) Any unauthorised design alterations or additions will void the manufacturer's guarantee; furthermore the manufacturer cannot
accept responsibility for personal injury or property damage resulting therefrom.
(3) Essential safety critical components are identified by ( ) on the Parts List and by shading on the schematics, and must never
be replaced by parts other than those listed in the manual. Please note however that many electrical and mechanical parts in
the product have special safety related characteristics. These characteristics are often not evident from visual inspection. Parts
other than specified by the manufacturer may not have the same safety characteristics as the recommended replacement parts
shown in the Parts List of the Service Manual and 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 re-assembling.
1.5.1 Warning
(1) Service should be performed by qualified personnel only.
(2) This equipment has been designed and manufactured to meet international safety standards.
(3) It is the legal responsibility of the repairer to ensure that these safety standards are maintained.
(4) Repairs must be made in accordance with the relevant safety standards.
(5) It is essential that safety critical components are replaced by approved parts.
(6) If mains voltage selector is provided, check setting for local voltage.
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.
(No.MB630)1-5
1.6 Important for laser products
1.CLASS 1 LASER PRODUCT
2.CAUTION :
(For U.S.A.) Visible and/or invisible class II laser radiation
when open. Do not stare into beam.
(Others) Visible and/or invisible class 1M laser radiation
when open. Do not view directly with optical instruments.
3.CAUTION : Visible and/or invisible laser radiation when
open and inter lock failed or defeated. Avoid direct
exposure to beam.
4.CAUTION : This laser product uses visible and/or invisible
laser radiation and is equipped with safety switches which
prevent emission of radiation when the drawer is open and
the safety interlocks have failed or are defeated. It is
dangerous to defeat the safety switches.
5.CAUTION : If safety switches malfunction, the laser is able
to function.
6.CAUTION : Use of controls, adjustments or performance of
procedures other than those specified here in may result in
hazardous radiation exposure.
REPRODUCTION AND POSITION OF LABELS and PRINT
!Please use enough caution not to
see the beam directly or touch it
in case of an adjustment or operation
check.
WARNING LABEL and PRINT
1-6 (No.MB630)
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
SECTION 3
DISASSEMBLY
3.1 Main body
3.1.1 Removing the REAR COVER (See Fig.1 to 4)
(1) Remove the two screws A, two screws B, two screws C
and two screws Dattaching the REAR COVER. (See Fig1)
(2) Remove the two screws Eattaching the both side of REAR
COVER. (See Fig.2)
(3) Disconnect the connector wire from AMP BOARD assem-
bly connected to connector CN404 of the POWER BOARD
assembly. (See Fig.3)
(4) Disconnect the connector wire from POWER TRANS-
FORMER connected to connector CN401 of the AMP
BOARD assembly. (See Fig.4)
Fig.1
A
B
C
D
(No.MB630)1-7
Fig.2
Fig.3
Fig.4
E
CN404
CN401
1-8 (No.MB630)
3.1.2 Removing the POWER BOARD assembly (See Fig.5)
(1) Disconnect the POWER CORD connected to connecter
CN407 of the POWER BOARD assembly.
(2) Disconnect the connector wire from POWER TRANS-
FORMER connected to connector CN406 of the POWER
BOARD assembly.
(3) Remove the two screws Fattaching the POWER BOARD
assembly.
Fig.5
CN406 CN407
F
(No.MB630)1-9
3.1.3 Removing the AMP BOARD assembly (See Fig.6 to 9)
(1) Remove the two screws Gattaching the AMP BOARD as-
sembly. (See Fig.6)
(2) Disconnect the card wire from TUNER PACK connected to
connector CN303 of the AMP BOARD assembly.
(3) Disconnect the connector wire from FRONT BOARD as-
sembly connected to connector CN302 of the AMP
BOARD assembly.
(4) Disconnect the connector wire from R/P HEAD connected
to connector CN201 of the AMP BOARD assembly.
(5) Disconnect the connector wire from ERASE HEAD con-
nected to connector CN202 of the AMP BOARD assembly.
(6) Disconnect the connector wire from DOOR SWITCH con-
nected to connector CN707 of the AMP BOARD assembly.
(7) Disconnect the connector wire from PHONE BOARD as-
sembly connected to connector CN205 of the AMP
BOARD assembly.
(8) Disconnect the card wire from FRONT BOARD assembly
connected to connector CN301 of the AMP BOARD as-
sembly.
(9) Remove the two screws Hattaching the TUNER PACK.
(See Fig.7)
(10) Disconnect the connector wire from AMP BOARD assem-
bly connected to connector CN901 of the CD BOARD as-
sembly. (See Fig.8)
(11) Disconnect the connector wire from AMP BOARD assem-
bly connected to CASSETTE MECHANISM BOARD as-
sembly. (See Fig.9)
Fig.6
Fig.7
Fig.8
Fig.9
CN303
CN201
G
G
CN302
CN202CN301
CN205 CN707
H
CN901
connector
1-10 (No.MB630)
3.1.4 Removing the CASSETTE MECHANISM assembly (See Fig.10)
(1) Remove the four screws Jattaching the CASSETTE
MECHANISM assembly.
Fig.10
J
J
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