CDX-GT310 - Sony Car Audio Service Manual (repair manual). Page 3

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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 viscous (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.

SERVO BOARD
CN2

MAIN BOARD
CN350

J-2502-076-1

When repairing or servicing this set, connect the jig (extension cable)
as shown below.

• Connect the MAIN board (CN350) and the SERVO board (CN2)

with the extension cable (Part No. J-2502-076-1).

This label is located on the bottom of the chassis.

This compact disc player is classified as a CLASS 1 LASER
product. The CLASS 1 LASER PRODUCT label is located on the
exterior.

You can play CD-DA (also containing CD TEXT*), CD-R/CD-
RW (MP3/WMA files also containing Multi Session .

Type of discs

Label on the disc

CD-DA

MP3

WMA

* A CD TEXT disc is a CD-DA that includes information such as

disc, artist and track name.