Servicing Notes - Sony GTK-XB72 Service Manual

GTK-XB72
The SERVICING NOTES contains important information for servicing. Be sure to read this section before repairing the unit.
UNLEADED SOLDER
Boards requiring use of unleaded solder are printed with the lead-
free mark (LF) indicating the solder contains no lead.
(Caution: Some printed circuit boards may not come printed with
the lead free mark due to their particular size)
: LEAD FREE MARK
Unleaded solder has the following characteristics.
• Unleaded solder melts at a temperature about 40 °C higher than
ordinary solder.
Ordinary soldering irons can be used but the iron tip has to be
applied to the solder joint for a slightly longer time.
Soldering irons using a temperature regulator should be set to
about 350 °C.
Caution: The printed pattern (copper foil) may peel away if the
heated tip is applied for too long, so be careful!
• Strong viscosity
Unleaded solder is more viscous (sticky, less prone to fl ow) than
ordinary solder so use caution not to let solder bridges occur
such as on IC pins, etc.
• Usable with ordinary solder
It is best to use only unleaded solder but unleaded solder may
also be added to ordinary solder.
5
SECTION 1

SERVICING NOTES

MODEL IDENTIFICATION
When checking the destination of this unit, check the print contents
on the model number label on the rear side of the main unit.
Note 1: Print content on the model number label may be changed in the
midway of the production.
Note 2: Since the part number suffi x printed on the model number label
may be changed in the midway of production, it is blank in the
fi gure below.
DESTINATION ABBREVIATIONS
The following abbreviations for model destinations are used in this
service manual.
• Abbreviations
AEP : European area (Except for UK, Ireland), East European
CND : Canadian and Latin American area (Puerto Rico) models
UK : European area (UK, Ireland) model
– Rear view –
US, CND
4-747-154-0[] (UC2)
AEP, UK
4-747-155-0[] (CEL/CEK)
area, CIS area (Moldova) and Middle East area (Israel,
Jordan) models
Sony CONFIDENTIAL
For Authorized Servicer
SYS SET