Jvc FST 100 Service Manual

Page 1

JVB
SERVICE MANUAL

o.

E m i

o o
l
o

Contents

NPS-"PWN

Safety Precautions ........................

Safety Precaution about FS-T100BK .
Instructions .....................................

Location of Main Parts .............................................. 24
Removal of Mainb Parts .
Main Adjustment ............. .
Out Line of Main IC .................................................. 39

. Analytic Drawing and Parts List

. Standard Schematic diagrams .

COMPACT

DEE

DIGITAL AUDIO

Area Suffix
C .................................................. Canada

Wiring Connections ..................

Block Diagram .......................................................... 46

Location of RC. Board Parts
Electrical Parts List ................................................... 56
Packsing ................................................................... 66

COPYRIGHT © 1997 VICTOR COMPANY OF JAPAN, LTD.

No. 10050
August 1997

Page 2

FS-T100BK C/J

1. Safety Precautions

1. The design this product contains special hardware and many circuits and components specially for safety purposess.
For continued protection, no changes should be made to the original design unless authorized in writing by the
manufacturer. Replacement parts must be indential to those used in the original circuits. Servise 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 manufacture's warranty and will further relive the manufacture of
responsibility for personal injury or property damage resulting therefrom.

3. Many electrical and mechanical parts in the product have special safety-related characteristics. These characteristics
are often not evident from visual inspection nor can the protectioon 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 indentified In the parts list of sen/ice manual. Electrical components having such features
are indentified by shading , . ) and (A) on the schematic diagram and by (A) on the parts list In the sen/ice
manual. The use of a substiture replacement which does not have the same safety characteristics as the recommended
replacement part 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, mpving 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 reassembllng.

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 directry into the AC outlet. Using a"Leakage Current Tester", measure the leakage current
from each exposed metal part 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 0.5 mA 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 AC VOLTMETER

the following manner. Connect a 1,500 ohms 10W resistor E] (HaVing 1000 Ohms/V0",
paralleled by a 0.15 F AC type capacitor between an or more senSmViil/J
exposed metal part and a known good earth ground. _°]--

Measure the AC voltage across the resistor with the AC 0.15pF AC TYPE

voltmeter. Move the resistor connection to each exposed It

metal part, particularly any exposed metal part having a

return path to the chassis, and measure the AC voltage W Place this probe
across the resistor. Now, reverse the plug in the AC outlet 1500 Q 10 on each exposed

and repeat each measurement. Any voltage measured must Good eanh ground metal part-

not exceed 0.75V AC(r.m.s.). This corresponds to 0.5mA
AC (r.m.s.).

cannon

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.

2 (No. 10050)