AV-21W33
AV-21W33B
REPLACEMENT OF CHIP COMPONENT
a CAUTIONS
1. Avoid heating for more than 3 seconds.
2. Do not rub the electrodes and the resist parts of the pattern.
3. When removing a chip part, melt the solder adequately.
4. Do not reuse a chip part after removing it.
a SOLDERING IRON
1. Use a high insulation soldering iron with a thin pointed end of it.
2. A 30w soldering iron is recommended for easily removing parts.
a REPLACEMENT STEPS
1. How to remove Chip parts2. How to install Chip parts
Resistors, capacitors, etc.
Resistors, capacitors, etc.
(1) As shown in the figure, push the part with tweezers and alter-(1) Apply solder to the pattern as indicated in the figure.
nately melt the solder at each end.
(2) Grasp the chip part with tweezers and place it on the solder.
Then heat and melt the solder at both ends of the chip part.
(2) Shift with tweezers and remove the chip part.
Transistors, diodes, variable resistors, etc.
(1) Apply solder to the pattern as indicated in the figure.
(2) Grasp the chip part with tweezers and place it on the solder.
Transistors, diodes, variable resistors, etc.
(1) Apply extra solder to each lead.(3) First solder lead A as indicated in the figure.
SOLDERSOLDER
A
B
(2) As shown in the figure, push the part with tweezers and alter-
nately melt the solder at each lead. Shift and remove the chip
part.C
(4) Then solder leads B and C.
A
B
C
Note : After removing the part, remove remaining solder from the
pattern.
No. 5207513 |
ACEC
JVC
