Sony Ipela SNC-CS50N, Руководство по обслуживанию

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1-1 (E)
SNC-CS50N/CS50P
Section 1
Service Overview
Switching
regulator
B1-193 board
SY-337 board
CT-240 board
PR-291 board
1-1. Board Location
1-2. 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
C
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.
1-3. Removing/Installing the Cabinet
n
Tighten the following screw to the tightening torque as
shown below.
Tightening torque:
BSW M2
x
5: 0.2
±
0.02 N
.
m
1-3-1. Lower Cover
Removal
1. Remove the rear cover in the direction shown by the
arrow.
2. Remove the four screws, then remove the lower cover.
Installation
3. Attach the lower case in the reverse order of steps 1
and 2.
Rear cover
Lower cover
BSW
M2
x 5
BSW
M2
x 5