Notes On Repair Parts; Replacement Procedure For Chip Parts - Sony PCS-1500 Service Manual

2-6. Notes on Repair Parts

2-6. Notes on Repair Parts
2-6-1. Notes on Repair Parts
Safety Related Components Warning
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Components marked ! are critical to safe operation.
Therefore, specified parts should be used in the case of
replacement.

2-6-2. Replacement Procedure for Chip Parts

Tools required
Soldering iron : 20 W
If possible, use a soldering-iron tip
heat-controller set to 270 ± 10 dC.
Braided wire (Desodering metal braid) :
SOLDER TAUL or equivalent
Sony part No. 7-641-300-81
Solder : 0.6 mm dia. is recommended.
Sharp-pointed tweezers
Soldering conditions
Soldering iron temperature : 270 ± 10 dC
Soldering time :
Capacitor Resistor
Terminals Terminals
. Resistor and Capacitor Replacement
(1) Place the soldering-iron tip onto the chip part and heat
it up until the solder melts.
When the solder melts, slide the chip part aside.
(2) Make sure that there is no pattern peeling, damage
and/or bridging around the desoldering position.
(3) After removing the chip part, presolder the area in
which the new chip is to be placed with a thin layer of
solder.
(4) Place new chip part in position and solder both ends.
n
Once a chip part has been removed never use it again.
2-14
two seconds per pin
Transistor,
Diode
Terminal
Terminals
. Transistors and Diodes Replacement
(1) Cut the terminals of the chip part with nippers.
(2) Remove the cut leads as above.
(3) Make sure that there is no pattern peeling, damage
and/or bridging around the desoldering positions.
(4) After removing the chip part, presolder the area in
which the new chip part is to be placed, with a thin
layer of solder.
(5) Place new chip part in position and solder the termi-
nals.
Nipper
Transistor
. IC Replacement
(1) Use the braided wire, remove the solder around the
pins of the IC-chip.
(2) While heating up the pins, remove them one by one
using sharp-pointed tweezers.
(3) Make sure that there is no pattern peeling, damage
and/or bridge around the desoldering position.
(4) After removing the chip part, presolder the area in
which the new chip part is placed with a thin layer of
solder.
(5) Place new chip part in the desired position and solder
the pins.
PCS-1500/1500P