Servicing Notes - Sony GTK-XB7 Service Manual

GTK-XB7
Ver. 1.1
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.
REPAIRING THE BOARDS
When each boards installed in this unit are defective, replace the
mounted board.
Individual electrical parts that mounted on the each boards cannot
be replaced.
Printed wiring board and schematic diagram that have been de-
scribed on this service manual are for reference.
4
SECTION 1

SERVICING NOTES

MODEL IDENTIFICATION
Distinguish by Part No. and destination code on the rear side of
the main unit.
MODEL NUMBER LABEL
US and Canadian models
SONY®
AEP, UK and Australian models
SONY®
Destination
US and Canadian models
(UC2)
AEP, UK and Australian
models (CEL, CEK, AU1)
DESTINATION ABBREVIATIONS
The following abbreviations for model destinations are used in this
service manual.
• Abbreviations
AUS : Australian model
CND : Canadian model
– Rear view –
Model No. GTK-XB7
Model No. GTK-XB7
Part No.
Destination code
Part No.
4-589-657-0[]
4-589-658-0[]
Part No.
Destination code
Destination
code
UC2
CEL/CEK/AU1