Notes On Replacement Of Switching Regulator; Notes On Replacement Of Down-Converter; Unleaded Solder; Notes On Repair Parts - Sony WLL-RX50 Maintenance Manual

1-14-5. Notes on Replacement of Switching
Regulator
The component parts inside of the switching regulator are
not supplied as a service part.
Be sure to replace the whole switching regulator when the
switching regulator is malfunctioning.
1-14-6. Notes on Replacement of Down-
Converter
The component parts inside of the down-converter of the
supplied accessory are not supplied as a service part.
Be sure to replace the whole down-converter when the
down-converter is malfunctioning.

1-14-7. Unleaded Solder

Boards requiring use of unleaded solder are printed with a
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
m
. Be sure to use the unleaded solder for the printed circuit
board printed with the lead free mark.
. The unleaded solder melts at a temperature about 40 d
higher than the ordinary solder, therefore, it is recom-
mended to use the soldering iron having a temperature
regulator.
. The ordinary soldering iron can be used but the iron tip
has to be applied to the solder joint for a slightly longer
time. The printed pattern (copper foil) may peel away if
the heated tip is applied for too long, so be careful.
1-10 (E)

1-14-8. Notes on Repair Parts

1. Safety Related Components Warning
w
Components marked ! are critical to safe operation.
Therefore, specified parts should be used in the case of
replacement.
2. Standardization of Parts
Some repair parts supplied by Sony differ from those
used for the unit. These are because of parts common-
ality and improvement.
Parts list has the present standardized repair parts.
3. Stock of Parts
Parts marked with "o" at SP (Supply Code) column of
the spare parts list may not be stocked. Therefore, the
delivery date will be delayed.
4. Harness
Harnesses with no part number are not registered as
spare parts.
In need of repair, get components shown in the list and
repair using them.
WLL-RX50