JVC FS-S57 Service Manual
SERVICE MANUAL
COMPACT COMPONENT SYSTEM
MB20520044
FS-S57
Area suffix
J ----------------------------- U.S.A.
C -------------------------- Canada
TABLE OF CONTENTS
1 PRECAUTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2 SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
3 DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
4 ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-30
5 TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31
COPYRIGHT © 2004 VICTOR COMPANY OF JAPAN, LIMITED
No.MB205
2004/4
SPECIFICATION
Amplifier Section
CA-FSS57
Tuner FM tuning range 87.5 MHz-108.0 MHz
CD player CD Capacity 5 CDs
General Power requirement AC 120 V , 60 Hz
Speaker Section
SP-UXS57
Output Power 74 W per channel, min. RMS, driven into 6 Ω at 1 kHz with no more
than 10% total harmonic distortion.
Analog input sensitivity/Impedance (at 1 kHz) AUX/DVD:400 mV/48 kΩ
Speakers/Impedance 6 Ω - 16 Ω
AM tuning range 530 kHz-1 710 kHz
Dynamic range 87 dB
Signal-to-noise ratio 90 dB
Wow and flutter Immeasurable
Power consumption 110 W (at operation)
17 W (on standby)
1.4 W (in power save mode)
Dimensions (W/H/D) (approx.) 175 mm × 239.5 mm × 378 mm (6 15/16 in. × 9 1/2 in. × 14 15/16 in.)
Mass (approx.) 7.4 kg (16.3 lbs)
Type 2-way bass-reflex type
Speakers Woofer 12 cm cone × 1
Tweeter 4 cm cone × 1
Power handling capacity 60 W
Impedance 6 Ω
Frequency range 53 Hz to 30 kHz
Sound pressure level 84 dB/W·m
Dimensions (W/H/D) (approx.) 145 mm × 239.5 mm × 202 mm (5 3/4 in. × 9 1/2 in. × 8 in.)
Mass (approx.) 2.2 kg (4.9 lbs) each
Design and specifications are subject to change without notice.
1-2 (No.MB205)
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.MB205)1-3
1.5 Preventing static electricity
.
Electrostatic discharge (ESD), which occurs when static electricity stored in the body, fabric, etc. is discharged, can destroy the laser
diode in the traverse unit (optical pickup). Take care to prevent this when performing repairs.
1.5.1 Grounding to prevent damage by static electricity
Static electricity in the work area can destroy the optical pickup (laser diode) in devices such as laser products.
Be careful to use proper grounding in the area where repairs are being performed.
(1) Ground the workbench
Ground the workbench by laying conductive material (such as a conductive sheet) or an iron plate over it before placing the
traverse unit (optical pickup) on it.
(2) Ground yourself
Use an anti-static wrist strap to release any static electricity built up in your body.
(caption)
Anti-static wrist strap
1M
(3) Handling the optical pickup
• In order to maintain quality during transport and before installation, both sides of the laser diode on the replacement optical
pickup are shorted. After replacement, return the shorted parts to their original condition.
(Refer to the text.)
• Do not use a tester to check the condition of the laser diode in the optical pickup. The tester's internal power source can easily
destroy the laser diode.
1.6 Handling the traverse unit (optical pickup)
(1) Do not subject the traverse unit (optical pickup) to strong shocks, as it is a sensitive, complex unit.
(2) Cut off the shorted part of the flexible cable using nippers, etc. after replacing the optical pickup. For specific details, refer to the
replacement procedure in the text. Remove the anti-static pin when replacing the traverse unit. Be careful not to take too long a
time when attaching it to the connector.
(3) Handle the flexible cable carefully as it may break when subjected to strong force.
(4) I t is not possible to adjust the semi-fixed resistor that adjusts the laser power. Do not turn it.
1.7 Attention when traverse unit is decomposed
*Please refer to "Disassembly method" in the text for the pickup unit.
• Apply solder to the short land sections before the flexible wire is disconnected from the connecto on the servo board. (If the flexible
wire is disconnected without applying solder, the pickup may be destroyed by static electricity.)
• In the assembly, be sure to remove solder from the short land sections after connecting the flexible wire.
Conductive material
(conductive sheet) or iron palate
1-4 (No.MB205)
Caution: For continued protection against risk of
fire, replace only with same type 2.5 A/125 V for
F1000, 1.5 A/125 V for F1001.
This symbol specifies type of fast operating fuse.
Precaution: Pour eviter risques de feux, remplacez
le fusible de surete de F1000 comme le meme type
que 2,5 A/125 V, et 1,5 A/125 V pour F1001.
Ce sont des fusibles suretes qui functionnes rapide
^
1.8 Importance administering point on the safety
Primary board
1.5A-125V
F1001
F1000
2.5A-125V
Caution: For continued protection against risk of
fire, replace only with same type 2.5 A/125 V for
F1000, 1.5 A/125 V for F1001.
This symbol specifies type of fast operating fuse.
Precaution: Pour eviter risques de feux, remplacez
le fusible de surete de F1000 comme le meme type
que 2,5 A/125 V, et 1,5 A/125 V pour F1001.
Ce sont des fusibles suretes qui functionnes rapide.
^
(No.MB205)1-5
SECTION 2
SPECIFIC SERVICE INSTRUCTIONS
This service manual does not describe SPECIFIC SERVICE INSTRUCTIONS.
1-6 (No.MB205)
SECTION 3
r
DISASSEMBLY
3.1 Main body section
3.1.1 Removing the metal cover
(See Figs.1 to 3)
(1) From the back side of the main body, remove the six
screws A attaching the metal cover. (See Fig.1.)
(2) From the both sides of the main body, remove the two
screws B attaching the metal cover. (See Figs.2 and 3.)
(3) Remove the metal cover in the direction of the arrow while
extending the lower sections of the metal cover. (See
Figs.2 and 3.)
A
Metal cove
A
A
Fig.1
Metal cover
B
Fig.2
Metal cover
B
Fig.3
(No.MB205)1-7
3.1.2 Removing the front panel assembly
(See Figs.4 to 6)
• Remove the metal cover.
(1) From the left side of the main body, disconnect the wire
from the connector CN104 on the power supply board.
(See Fig.4.)
Reference:
After connecting the wire to the connector CN104
wire with the spacer as before. (See Fig.4.)
(2) Disconnect the card wire from the connector CN700
micon board. (See Figs.4 and 5.)
Reference:
After connecting the card wire to the connector CN700
fix the card wire with the spacer as before. (See Fig.4.)
(3) From the top side of the main body, remove the screws C
attaching the front panel assembly. (See Fig.5.)
(4) From the bottom side of the main body, remove the two
screws D attaching the front panel assembly. (See Fig.6.)
(5) Release the two hooks a and hook b from the both and bot-
tom sides of the front panel assembly, and remove the front
panel assembly in the direction of the arrow. (See Fig.6.)
Reference:
When attaching the front panel assembly, fit the micon board
to the notch c on the back side of the front panel assembly.
(See Fig.5.)
, fix the
on the
Front panel assembly
Card wire
Micon board
CN700
,
CN104
Power supply board
Spacer
Fig.4
Micon board
C
c
CN700
Card wire
Micon board
Front panel assembly
Fig.5
a
b
1-8 (No.MB205)
D
a
Front panel assembly
Fig.6
3.1.3 Removing the rear panel
(See Fig.7)
• Remove the metal cover.
(1) From the back side of the main body, remove the five
screws E attaching the rear panel.
(2) Remove the screw F attaching the rear cover.
(3) Remove the rear panel from the chassis while extending
the sections d of the rear panel in the direction of the arrow.
Reference:
When removing the rear cover, remove the screw F and two
screws F'.
E
F'
Rear panel
E
F'
3.1.4 Removing the power supply board
(See Fig.8)
• Remove the metal cover.
(1) From the left side of the main body, remove the screw G
and screw H attaching the power supply board.
(2) Disconnect the connectors CN103
board toward this side.
(3) From the forward side of the power supply board, discon-
nect the wires from the connectors (CN100
).
CN104
Reference:
When attaching the screw G, attach the primary protector with
it.
3.1.5 Removing the tuner
(See Fig.8)
• Remove the metal cover.
(1) From the left side of the main body, disconnect the card
wire from the connector CN1
(2) From the back side of the main body, remove the two
screws J attaching the tuner.
Reference:
• After attaching the tuner, put the card wire on the section e
of the primary protector.
• When connecting the card wire to the connector CN1
card wire with the spacer as before.
on the power supply
to CN102,
on the tuner.
, fix the
J
CN101
CN100
d
CN1
Tuner
Spacer
F
Fig.7
Card wire
CN1
CN103
H
Fig.8
d
Rear cover
Power supply board
e
CN102
G
CN104
Wire
Primary protector
(No.MB205)1-9
3.1.6 Removing the micon board
(See Figs.9 and 10)
• Remove the metal cover, front panel assembly and rear panel.
(1) From the top side of the main body, disconnect the card
wire from the connector CN766 on the micon board. (See
Fig.9.)
Reference:
When connecting the card wire to the connector CN766
fix the card wire with the spacer as before.
(2) From the forward side of the micon board, disconnect the
wire from the connectors (CN750
board. (See Fig.9.)
Reference:
When reassembling, fix the wire with the wire holder after connecting the wire to the connector CN760
micon board as before. (See Fig.9.)
(3) From the right side of the main body, remove the three
screws K attaching the micon board. (See Fig.10.)
(4) Disconnect the connectors (CN761
board toward this side. (See Fig.10.)
(5) From the forward side of the micon board, disconnect the
card wire from the connectors CN765
, CN760) on the micon
on the
,CN762) on the micon
. (See Fig.10.)
,
Micon board
CN766
Spacer
CN766
Card wire
CN750
Wire holder
Fig.9
Wires
CN760
CN765
K
CN762
Fig.10
Micon board
CN761
K
1-10 (No.MB205)
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