Sony CMT-BT60 Service Manual page 2

CMT-BT60/BT60B/BT80W/BT80WB
Trademarks, etc.
Windows, the Windows logo, and Windows
Media are either registered trademarks or
trademarks of Microsoft Corporation in the
United States and/or other countries.
This 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.
AirPlay, the AirPlay logo, iPad, iPhone, iPod,
iPod classic, iPod nano, and iPod touch are
trademarks of Apple Inc., registered in the U.S.
and other countries.
" " is a mark of the Wi-Fi Alliance.
Wi-Fi®, Wi-Fi Protected Access® and Wi-Fi
Alliance® are registered marks of the Wi-Fi
Alliance.
Wi-Fi CERTIFIED™, WPA™, WPA2™ and Wi-Fi
Protected Setup™ are marks of the Wi-Fi
Alliance.
DLNA™, the DLNA Logo and DLNA CERTIFIED™
are trademarks, service marks, or certification
marks of the Digital Living Network Alliance.
MPEG Layer-3 audio coding technology and
patents licensed from Fraunhofer IIS and
Thomson.
The BLUETOOTH® word mark and logos are
owned by the BLUETOOTH SIG, Inc. and any use
of such marks by Sony Corporation is under
license.
The N Mark is a trademark or registered
trademark of NFC Forum, Inc. in the United
States and in other countries.
Android is a trademark of Google Inc.
"Xperia" and "Xperia Tablet" are trademarks of
Sony Mobile Communications AB.
The system names and product names indicated
in this manual are generally the trademarks or
registered trademarks of the manufacturer.
™ and ® marks are omitted in this manual.
This appliance is classified as a
CLASS 1 LASER product. This
marking is located on the
bottom exterior.
2
SAFETY CHECK-OUT
After correcting the original service problem, perform the follow-
ing 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 2 V 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.
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.
CAUTION
Use of controls or adjustments or performance of procedures
other than those specifi ed herein may result in hazardous radia-
tion exposure.
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