Fuse And Ic Link Replacement; Unleaded Solder - Sony VFH-990 Maintenance Manual

1-9. Fuse and IC Link Replacement

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The fuse and IC link are critical parts to safe operation.
Replace the components with Sony parts whose part
number appear in the manual published by Sony. If the
components are replaced by any parts other than the
specified ones, this may cause a fire or electric shock.
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If a fuse or IC link is replaced while the main power is kept
on, this may cause electric shock.
Before replacing fuse or IC link, not only turn off the
POWER switch but also remove the power cable that is
connected to the DC IN connector.
The RE-237 board is equipped with fuse. The PR-292
board is equipped with IC link.
Any an excessive current flow due to abnormality inside
the equipment, the fuse and IC link blow. If a fuse or IC
link blows, turn off the main power of the equipment once
and inspect inside of the equipment and remove the cause
of excessive current. After that, replace the fuse and/or IC
link.
Board Ref. No. Description
RE-237 F1 Fuse
(3.15 A/125 V)
PR-292 PS1, 2, 3, 4 IC link 0.6 A
1-16 (E)

1-10. 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.)
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. 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 dC
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.
Part No.
!1-576-269-21
!1-576-259-21
: LEAD FREE MARK
HDVF-C950W