TA-FA1200ES - Sony Audio Service Manual (repair manual). Page 3

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Model

PART No.

AEP model

2-688-071-1[]

UK model

2-688-072-2[]

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)

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 viscou-s (sticky, less prone to flow)
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.

This set contains the circuits that take grounding not from usual
ground but from virtual ground.
When measuring circuits in the MAIN DIF board that take “V-GND”
as a ground, take grounding from CNP5202 pin 3 of the MAIN
DIF board.

PART No.