JVC AV-28WFT1EPG Service Manual page 36

AV-28WFT1EPG AV-28WFT1EIS
AV-28WFT1EPS AV-32WFT1EPG
AV-28WFT1EKS AV-32WFT1EPS
AV-28WFT1EK AV-32WFT1EKS
REPLACEMENT OF CHIP COMPONENT
m@ 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. Donot reuse a chip part after removing it.
m SOLDERING IRON
1. Use a high insulation soldering iron with a thin pointed end of it.
2. A30w soldering iron is recommended for easily removing parts.
m@ REPLACEMENT STEPS
1. How to remove Chip parts
2. How to install Chip parts
@ Resistors, capacitors, etc @ 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 tweezers and remove the chip part.
(1) Apply solder to the pattern as indicated in the figure.
af
(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.
a!
@ Transistors, diodes, variable resistors, etc @ Transistors, diodes, variable resistors, etc
(1) Apply extra solder to each lead.
SOLDER SOLDER
(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.
1A
as
Note : After removing the part, remove remaining solder from the
pattern.
36 No.51694
(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.
A
B
Cc
(4) Then solder leads B and C.
A
B
Cc