
GTK-XB60
2
SAFETY-RELATED COMPONENT WARNING!
COMPONENTS IDENTIFIED BY MARK 0OR DOTTED LINE 
WITH MARK 0ON THE SCHEMATIC DIAGRAMS AND IN 
THE PARTS LIST ARE CRITICAL TO SAFE OPERATION.
REPLACE THESE COMPONENTS WITH SONY PARTS 
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 0SUR 
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.
License and Trademark 
Notice
tMPEG Layer-3 audio coding 
technology and patents licensed 
from Fraunhofer IIS and Thomson.
tWindows Media is either a registered 
trademark or trademark of Microsoft 
Corporation in the United States 
and/or other countries.
tThis 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.
tThe 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.
tThe N-Mark is a trademark or 
registered trademark of NFC Forum, 
Inc. in the United States and in other 
countries.
tGoogle Play and Android are 
trademarks of Google Inc.
tLD AC™ and LDAC logo are 
trademarks of Sony Corporation.
tApple , the Apple logo, iPhone, and 
iPod touch are trademarks of Apple 
Inc., registered in the U.S. and other 
countries. App Store is a service 
mark of Apple Inc.
t“Made for iPod” and “Made for 
iPhone” mean that an electronic 
accessory has been designed to 
connect specically to iPod or 
iPhone, respectively, and has been 
certied 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. 
Please note that the use of this 
accessory with iPod or iPhone may 
aect wireless performance.
tWALKMAN and WALKMAN logo 
are registered trademarks of Sony 
Corporation.
tAll other trademarks and registered 
trademarks are of their respective 
holders. In this manual,TM and ®
marks are not specied.
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)
1.5 kΩ0.15 μF
AC
voltmeter
(0.75 V)
To Exposed Metal
Parts on Set
Earth Ground
Fig. A. Using an AC voltmeter to check AC leakage.