V-20NMG3B
31
REPLACEMENT OF CHIP COMPONENT
!
CAUT IONS
1. Avoid heating for more than 3 seconds.
2. Do n ot ru b t he elect rodes an d t he r esist p ar ts of the p att ern.
3. W hen r em oving a c hip part, melt th e s older ad equ ate ly.
4. Do n ot r euse a ch ip p art afte r re mo ving it .
!
SOLDERING IRON
1. Use a hig h ins ulatio n s oldering iron with a t hin po inted e nd of it .
2. A 30 w s oldering iron is rec ommend ed for easily removing p arts.
! REPLACEMENT STEPS
1. How to remove Chip parts
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$ Resi st ors, ca pa cit ors , etc
(1) As sh own in t he f igure, push th e pa rt with twee zers and
alte rnat ely melt the solde r at each end.
(2) Sh if t with tweeze rs an d remo ve th e ch ip p art.
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$ Trans istors, diodes , va ria bl e r es istor s, etc
(1) Ap ply e xt ra so ld er to ea ch le ad .
(2) As sh own in t he f igure, push th e pa rt with twee zers and
alte rnat ely melt th e sold er a t each le ad . S hift and rem ove t he
chip part.
Note : A fter re moving t he part , remove remaining solder from the
pattern.
2. How to install Chip parts
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Resi stors, ca pacitors , etc
(1) Apply sold er to the pattern as indic ated in the figure.
(2) Grasp t he chip p art with twee zers and plac e it on th e s old er.
The n h ea t an d melt th e so ld er a t b oth en ds of t he chip par t.
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$ Trans istors, diodes , va ria bl e r es istor s, et c
(1) Apply sold er to the pattern as indic ated in the figure.
(2) Grasp the ch ip p art wit h t weeze rs an d p lace it on th e so lder.
(3) First solder lead
A
as indicated in the figure.
(4) The n solder le ads B and C.
SOLDE R SOLD E R
A
B
C
A
B
C
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