DSX-GS900
4
Sony CONFIDENTIAL
For Authorized Servicer
SECTION 1
SERVICING NOTES
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.
REPLACING THE LITHIUM BATTERY (CR2025) OF THE
REMOTE COMMANDER
When the battery becomes weak, the range of the
remote commander becomes shorter.
CAUTION
Danger of explosion if battery is incorrectly
replaced. Replace only with the same or equivalent
type.
Note on the lithium battery
Keep the lithium battery out of the reach of children.
Should the battery be swallowed, immediately consult
a doctor.
Lithium battery (CR2025)
+ side up
ABOUT INSTALLATION OF THIS UNIT FOR WORKING
Due to the structure of the unit, you cannot stably place it on
fl
at
surfaces.
Stabilize the unit by placing a stand, etc. under it that is suitable for
your work.
stand, etc.
NOTE FOR THE HEAT SINK
This unit is installed with a heat sink inside the chassis on the left
side.
If you touch this unit immediately after checking the operation of
this unit, be careful not to touch the heat sink on the left side.
heat sink
NOTE OF REPLACING THE MAIN BOARD
When replacing the MAIN board, there are point to notes and neces-
sary to perform a few work. Be sure to refer to the following.
Required works:
• Destination setting code con
fi
rmation
(Refer to “CONFIRMATION OF DESTINATION SETTING
CODE” on page 5)
• Destination
setting
(Refer to “DESTINATION SETTING METHOD” on page 6)
Note:
Set the destination only if the destination setting code is not set cor-
rectly.
• Initializing
(Refer to “INITIALIZATION METHOD” on page 7)
Operation check works:
• BLUETOOTH FUNCTION CHECKING METHOD USING A
SMARTPHONE OR CELLULAR PHONE (page 9)
• OPERATION CHECK OF THE USB (page 10)
SYS SET
2019/10/17 22:00:30 (GMT+09:00)
