SERVICE MANUAL
No.21181
Oct. 2002
COPYRIGHT
2002 VICTOR COMPANY OF JAPAN, LTD.
SX-XD33
HOME CINEMA DD SPEAKER SYSTEM
Safety precautions
Disassembly method
1- 2
1- 3~6
Contents
Area Suffix
SX-XD33
E --- Continental Europe
SX-XDC33
SX-XDS33
SX-XDS33
SX-XDS33
SX-XDS33
SX-XD33
1-2
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 manufacturer`s 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 re-assembling.
5. Leakage current check (Electrical shock hazard testing)
After re-assembling 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 ohms per volt or more
sensitivity in the following manner. Connect a 1,500
10W resistor paralleled by a 0.15 F AC-type capacitor
between an exposed 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 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. 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.
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
!
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.
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.)
SX-XD33
1-3
Remove the screw marked A attaching the cabinet to
the stand.
Up life the cabinet just enough to disconnect the
speaker harness from the speaker terminal.
Remove the connection of the speaker harness at
the speaker terminal of the cabinet.
Remove the cabinet from the cabinet stand
completely.
Disassembly method
Removing the cabinet
(See Fig.1~ 3)
1.
2.
3.
4.
Fig.1
Fig.2
Fig.3
Cabinet
Network
A
Speaker
terminal
Speaker
harness
Cabinet
stand
Cabinet
stand
Cabinet
Cabinet
stand
Cabinet
SX-XD33
1-4
1.
2.
3.
4.
5.
Prior to performing the following procedures, remove
the cabinet.
Remove the screw marked A attaching the net to the
cabinet.
By using tweezers and like which is inserted through
the hole of
the net, remove the couple-face
adhesive tape holding the net to the cabinet.
Remove the eight screws marked B attaching the
speaker to the cabinet.
Pull out the speaker from the cabinet toward you.
Remove the speaker harness from the speaker
terminal.
Note:
Removing the satellite speaker
(See Fig.4~6)
When it is hard to remove the net, insert a
tweezers, etc. Exercise care not to damage the
cabinet and the speaker when inserting the
tweezers and the like. For this purpose, insert
cloth together with tweezers and the like.
Remove the holder of the net carefully because
the net is pinned on the cabinet with glue.
Please apply a small amount of
glue to the
boss of the net on the occasion of attachment.
Fig.5
Fig.6
Fig.4
B
Net
Cabinet
B
B
B
Horder
Both sides tape
Speaker
terminal
Speaker
harness
Speaker
Speaker
SX-XD33
1-5
1.
2.
3.
4.
5.
6.
7.
Prior to performing the following procedures, remove
the cabinet.
Remove the screw marked C attaching the speaker
terminal cover.
Remove the speaker terminal cover.
Remove the speaker harness from the speaker
terminal.
Remove the speaker harness from the cabinet base
cover.
Remove the three screws marked D attaching the
cabinet stand to the cabinet base cover.
Remove the cabinet bracket from the cabinet base
cover.
Remove the cabinet stand from the cabinet base
cover.
Removing the cabinet stand
(See Fig.7~9)
Fig.8
Fig.9
Fig.7
Cabinet
stand
D
D
C
Speaker
terminal
cover
Speaker
terminal
Speaker
harness
Speaker
base
cover
Speaker
harness
Cabinet
bracket