1-20 (No.YA351)
3.3
REPLACEMENT OF CHIP COMPONENT
3.3.1 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.
3.3.2 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.
3.3.3 REPLACEMENT STEPS
1. How to remove Chip parts
[Resistors, capacitors, etc.]
(1) As shown in the figure, push the part with tweezers and
alternately melt the solder at each end.
(2) Shift with the tweezers and remove the chip part.
[Transistors, diodes, variable resistors, etc.]
(1) Apply extra solder to each lead.
(2) As shown in the figure, push the part with tweezers and
alternately melt the solder at each lead. Shift and remove
the chip part.
NOTE :
After removing the part, remove remaining solder from the
pattern.
2. How to install Chip parts
[Resistors, capacitors, 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. Then heat and melt the solder at both ends of 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.
(3) First solder lead
A
as indicated in the figure.
(4) Then solder leads
B
and
C
.
SOLDER
SOLDER
A
B
C
A
B
C
Summary of Contents for LT-17AX5
Page 10: ...1 10 No YA351 Fig 5 MAIN PWB SHIEELD I x2 J x2 ...
Page 13: ... No YA351 1 13 Fig 8 Q x2 Q x2 LCD BRACKET ...
Page 15: ... No YA351 1 15 Fig 10 W x4 W x4 LCD BRACKET ...
Page 21: ... No YA351 1 21 SECTION 4 ADJUSTMENT This service manual does not describe ADJUSTMENT ...
Page 28: ......
Page 41: ...2 28 No YA351 No YA351 2 27 PATTERN DIAGRAMS MAIN PWB AND IR SENSER PWB PATTERN TOP TOP ...
Page 43: ......
