Jvc RX 8012 Service Manual

Page 2

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RX-8012VSL/RX-8010VBK

-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 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 (/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 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.

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 each exposed metal part, c more sens'l'V'W)

particularly any exposed metal part having a return path to F A TYPE
the chassis, and measure 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 J&C version)

Page 42

RX-8012VSL/RX-801OVBK

lSystemcontrol U, y, _______- _________________________ _
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When replacing those parts make
sure to use the specified one.

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Page 79

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I Parts Identification

Become familiar with the buttons and controls on the receiver before use.
Refer to the pages in parentheses for details.

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Remote Control
(1) Display window(11)

a. Remote control operation mode indicator
b. Signal transmission indicator
Lights up when transmitting the remote
@ control signal.
7 . to 0/1 buttons(11,51754)
W CATV/DBS. VCR 1, TV, AUDIO
@ n z I G) Source selecting buttons (11)
C) C) C) C) DVD.DVDMULTI,CD,FM/AM,TVIDBS,VIDEO,
@ was £3 D 0 CDR, PHONO, VCR I,VCR 2, TAPE/MD, USB
Wt mu WWD use ® SURROUND ON/OFF button (26, 27, 30)
(3 ME)» fiwfiugfi @ C5) DSP MODE button (26, 29 733)
C5 mm W my in (6) LINE DIRECT button (14)
@ mg) (i) (23$) _@ Q) MIDNIGHT MODE button (13)
® 5 @ Cgmwnés (8) SOUND button (14 7 I7. 27 7 35, 49)
w W M, MW @ C9) MUTING button (13)
(I? \J .v @ ® CATV/DBS CONTROL button (53)
@ W mm EA WA ® TV/VIDEO button (51, 52)
{3 Q2) MENU button (36 7 40)
® ® ® TEXT DISPLAY button (43 7 46)
@) REC PAUSE button (50, 51, 53)
GT ® SLEEP button (15)
® ® 013 ANALOG/DIGITAL INPUT button (20)
(7) - 10 keys for selecting preset channels (23)
® 22 . 10 keys for adjusting sound (14 717,27 7 35,
o o 49)
- 10 keys for operating audio/video components
(49 7 54 )
RMJ-SRVXMEU ® ' LEVEL +/7 buttons' (15. 17,27 7 35)

- BAL L and BAL R buttons (16)
- CH +/7 buttons (51 7 53)

@ TV VOL +/7 buttons (51, 52)

6) VOLUME +/7 buttons (12)

@ EXIT button (36 7 40,437 45)

@ - TUNING UP b/DOWN 4 buttons (22, 49)
- On screen operation buttons (36 7 40, 43 7 46)
- Operating buttons for audio/video components

(49 7 54)
123 CONTROL button (50. 51)

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Front Panel

m STANDBY/ON O/l button and STANDBY
lamp (11, 22)

- SPEAKERS ON/OFF 1 button (13)

- SPEAKERS ON/OFF 2 button (13)

FM/AM TUNING A/V buttons (22)

DSP MODE button and lamp (26. 28 733)
FM/AM PRESET A/V buttons (22, 23)

- INPUT ANALOG/DIGITAL button (20)

- INPUT ATT button (14)

FM MODE button (23)

MEMORY button (22)

Display (11)

EFFECT button (28 7 33)

DIGITAL EQ button (15)

Remote sensor (10)

LEVEL ADJUST button (l6. I7, 28 7 35)
SETTING button (16 7 19, 21)

MASTER VOLUME control ( I2)

LINE DIRECT button and lamp (l4)
PHONES jack (13)

SUBWOOFER OUT ON/OFF button (14)
SURROUND ON/OFF button and lamp (26, 28,
31)

USB AUDIO terminal (9)

VIDEO input terminals (7)

MIDNIGHT MODE button (13)

Source selecting buttons and lamps (11)

DVD MULTI. DVD, VCR 1, VCR 2. VIDEO, TV
SOUND/DES, PHONO. CD, CDR, TAPBMD,
USB AUDIO, FM/AM

SOURCE NAME buttons (16)

CONTROL UP A/DOWN V buttons

BASS BOOST button and lamp (14)

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* These buttons function only after pressing
10 keys on the remote control which are
marked with an asterisk (*).

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