Jvc RX 6012 RSL Service Manual

Page 2

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RX-601ORBK/RX-6012RSL

-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 (/t\,) 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 currnet 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.

0 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 Q10W resistor paralleled by a 0.1 51.1 F AC-type capacitor

between an exposed metal part and a known good earth ground. AC VOLTMETER
Measure the AC voltage across the resistor with the AC a (Having1000
voltmeter. ohms/volts,

Move the resistor connection to eachexposed metal part, c more sens'W'W)

particularly any exposed metal part having a return path to F A TYPE
the chassis, and meausre the AC voltage across the resistor. 0'15 C

Now, reverse the plug in the AC outlet and repeat each -| Placethis
measurement. voltage measured Any must not exceed 0.75 V WV . Pmbe 0"
each exposed

AC (r.m.s.). This corresponds to 0.5 mA AC (r.m.s.). 15009 10W metal part.

Good earth ground

- Warning A CAUTION

1.This equipment has been designed and manufactured to meet international safety standards. Burrs formed during molding may
2. it is the legal responsibility of the repairer to ensure that these safety standards are maintained. be left over on some parts of the
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. such burrs in the case of

5. If mains voltage selector is provided, check setting for local voltage. preforming repair of this system.

chassis. Therefore, pay attention to

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 (h) and ICP (Q) or identified by the (N
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.
(Except the JC version)

Page 78

DAP modes

In order to reproduce a more acoustic sound field in your listening
room while playing soundtracks of stereo sources, you can use DAP
modes. This mode can be used when the front speakers and the
rear speakers are connected to this receiver (without respect to
the center speaker connection).

You can select one of the following to your preference.

LIVE CLUB: Gives the feeling of a live music club with a low

ceiling.
DANCE CLUB: Gives a throbbing bass beat.
HALL: Gives clear vocal and the feeling of a concert hall.

PAVILION: Gives the spacious feeling of a pavilion with a
high Ceiling.

Available DSP modes according to the input mode

Reprodu "fly the Sound Field

The sound heard in a concert hall or club consists of direct sound
and indirect sound 7 early reflections and reflections from behind.
Direct sounds reach the listener directly without any reflection. On
the other hand, indirect sounds are delayed by the distances of the
ceiling and walls. These direct sounds and indirect sounds are the
most important elements of the acoustic surround effects.

JVC Theater Surround and DAP modes can create these important
elements, and give you a real being there" feeling.

Reflections from
behind

Early reflections

0: Possible ><: Impossible

* You can also use SURROUND on the remote control to activate the surround mode.

BUTTON
(On the remote control) SURROUND MODE
BUTTON SURROUND ON/OFF* DSP MODE
(On the tront panel)
MODE SURROUND ON THEATER LIVE CLUB DANCE CLUB HALL PAVILION DSP OFF
(SURROUND OFF)
ANALOG O
(2 CH) (DOLBY PRO LOGIC) O O O O O
O
.5 LINEAR PCM (DOLBY PRO LOGIC) O O O O O
n.
z 0
DOLBY DIGITAL (DOLBY DIGITAL) X X X X O
O 2
DTS (DTS SURROUND) X X X X 0

" When 2 channel signal comes in, DOLBY PRO LOGIC is selected.When other signals come in, DOLBY DIGITAL is selected.
2 When 2 channel signal comes in, DOLBY PRO LOGIC is selected. When other signals come in, DTS SURROUND is selected.

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