Sony MHC-V71 Service Manual page 2

MHC-V71/V71D
Ver. 1.1
General
Power requirements:
US, CND models:
AC 120 V, 60 Hz
Except US, CND models:
AC 120 V – 240 V, 50/60 Hz
Power consumption:
120 W
Power consumption (at the Power Saving
mode) (V71D):
0.5 W (When "BT STBY" is set to
"OFF" and [CONTROL FOR
HDMI] is set to [OFF].)
2 W* (When "BT STBY" is set to
"ON" and [CONTROL FOR HDMI]
is set to [ON].)
Dimensions (W/H/D) (Approx.):
370 mm × 930 mm × 427 mm
(14 5/8 in x 36 5/8 in x 16 7/8 in)
Mass (Approx.):
22 kg (48 lb 9 oz)
Operating temperature:
5 °C to 35 °C (41 °F to 95 °F)
* The power consumption of the system
will be less than 0.5 W when there is no
HDMI connection and "BT STBY" is set
to "OFF".
Unpacking
• T his unit (MHC-V71/V71D) (1)
• R emote control (1)
• R 03 (size AAA) batteries (2)
• F M lead antenna (1)
• A C power cord (mains lead) (1)
• A C plug adaptor* (1) (supplied only for
certain areas) (V71D)
* This plug adaptor is not for the use in
Chile, Paraguay and Uruguay. Use this
plug adaptor in the countries where it is
necessary.
Design and specifications are subject to
change without notice.
License and Trademark Notice
• is a trademark of DVD Format/Logo
Licensing Corporation.
• " DVD+RW", "DVD-RW", "DVD+R",
"DVD-R", "DVD VIDEO", and the "CD"
logos are trademarks.
• W ALKMAN and WALKMAN logo are
® ®
registered trademarks of Sony Corpora-
tion.
• M PEG Layer-3 audio coding technology and
patents licensed from Fraunhofer IIS and
Thomson.
• W indows Media is either a registered
trademark or trademark of Microsoft
Corporation in the United States and/or other
countries.
• T his product is protected by certain
intellectual property rights of Microsoft
Corporation. Use or distribution of such
technology outside of this product is
prohibited without a license from Microsoft
or an authorized Microsoft subsidiary.
• This system incorporates Dolby* Digital.
* Manufactured under license from Dolby
Laboratories. Dolby, Dolby Audio, and the
double-D symbol are trademarks of Dolby
Laboratories.
• T his system incorporates High-
Definition Multimedia Interface
(HDMI™) technology. The terms HDMI
and HDMI High-Definition Multimedia
Interface, and the HDMI Logo are
trademarks or registered trademarks of
HDMI Licensing Administrator, Inc. in
the United States and other countries.
• " BRAVIA" is a trademark of Sony
Corporation.
• L DAC™ and LDAC logo are trademarks
of Sony Corporation.
• T he BLUETOOTH word mark and
®
logos are registered trademarks owned
by Bluetooth SIG, Inc. and any use
of such marks by Sony Corporation is
under license. Other trademarks and
trade names are those of their respective
owners.
• T he N-Mark is a trademark or registered
trademark of NFC Forum, Inc. in the United
States and in other countries.
• A ndroid, Google Play, and the Google
Play logo are trademarks of Google LLC.
2
• A pple, iPhone, iPod touch, and Siri are
trademarks of Apple Inc., registered in
the U.S. and other countries. App Store is
a service mark of Apple Inc., registered
in the U.S. and other countries.
• U se of the Made for Apple badge means
that an accessory has been designed
to connect specifically to the Apple
product(s) identified in the badge, and
has been certified by the developer to
meet Apple performance standards. Apple
is not responsible for the operation of this
device or its compliance with safety and
regulatory standards.
• T HIS PRODUCT IS LICENSED UNDER
THE MPEG-4 VISUAL PATENT
PORTFOLIO LICENSE FOR THE
PERSONAL AND NON-COMMERCIAL
USE OF A CONSUMER FOR
(i) ENCODING VIDEO IN COMPLIANCE
WITH THE MPEG-4 VISUAL STAN-
DARD ("MPEG-4 VIDEO")
AND/OR
(ii) DECODING MPEG-4 VIDEO THAT
WAS ENCODED BY A CONSUMER
ENGAGED IN A PERSONAL AND
NON-COMMERCIAL ACTIVITY AND/
OR WAS OBTAINED FROM A VIDEO
PROVIDER LICENSED TO PROVIDE
MPEG-4 VIDEO.
NO LICENSE IS GRANTED OR SHALL
BE IMPLIED FOR ANY OTHER USE. AD-
DITIONAL INFORMATION INCLUDING
THAT RELATING TO PROMOTIONAL,
INTERNAL AND COMMERCIAL USES
AND LICENSING MAY BE OBTAINED
FROM MPEG LA, L.L.C.
HTTP://WWW.MPEGLA.COM
• A ll other trademarks are trademarks of
their respective owners.
• I n this manual, ™ and marks are not
®
specified.
NOTES ON CHIP COMPONENT REPLACEMENT
• Never reuse a disconnected chip component.
• Notice that the minus side of a tantalum capacitor may be dam-
aged by heat.
FLEXIBLE CIRCUIT BOARD REPAIRING
• Keep the temperature of the soldering iron around 270 °C dur-
ing repairing.
• Do not touch the soldering iron on the same conductor of the
circuit board (within 3 times).
• Be careful not to apply force on the conductor when soldering
or unsoldering.
SAFETY CHECK-OUT
After correcting the original service problem, perform the following
safety check before releasing the set to the customer:
Check the antenna terminals, metal trim, "metallized" knobs,
screws, and all other exposed metal parts for AC leakage. Check
leakage as described below.
LEAKAGE TEST
The AC leakage from any exposed metal part to earth ground and
from all exposed metal parts to any exposed metal part having a
return to chassis, must not exceed 0.5 mA (500 microamperes).
Leakage current can be measured by any one of three methods.
1. A commercial leakage tester, such as the Simpson 229 or RCA
WT-540A. Follow the manufacturers' instructions to use these
instruments.
2. A battery-operated AC milliammeter. The Data Precision 245
digital multimeter is suitable for this job.
3. Measuring the voltage drop across a resistor by means of a
VOM or battery-operated AC voltmeter. The "limit" indication
is 0.75 V, so analog meters must have an accurate low-voltage
scale. The Simpson 250 and Sanwa SH-63Trd are examples
of a passive VOM that is suitable. Nearly all battery operated
digital multimeters that have a 2V AC range are suitable. (See
Fig. A)
To Exposed Metal
Parts on Set
0.15 µF
Fig. A. Using an AC voltmeter to check AC leakage.
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK 0 OR DOTTED LINE
WITH MARK 0 ON THE SCHEMATIC DIAGRAMS AND IN
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS
WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
MANUAL OR IN SUPPLEMENTS PUBLISHED BY SONY.
ATTENTION AU COMPOSANT AYANT RAPPORT
À LA SÉCURITÉ!
LES COMPOSANTS IDENTIFIÉS PAR UNE MARQUE 0 SUR
LES DIAGRAMMES SCHÉMATIQUES ET LA LISTE DES
PIÈCES SONT CRITIQUES POUR LA SÉCURITÉ DE FONC-
TIONNEMENT. NE REMPLACER CES COMPOSANTS QUE
PAR DES PIÈCES SONY DONT LES NUMÉROS SONT DON-
NÉS DANS CE MANUEL OU DANS LES SUPPLÉMENTS
PUBLIÉS PAR SONY.
AC
1.5 kΩ voltmeter
(0.75 V)
Earth Ground
WITH SONY PARTS
SYS SET