Panasonic SG-D16 - HOW TO REPLACE ICS (Small outline type); FUNCTION OF IC TERMINALS

mM
HOW
TO
REPLACE
IC’S
(Small
outline
type)
1
|
Reduce
the
amount
of
solder
on
(Example)
H—130
e
Recommended
tool
each
pin
oftheintegratedcircuitby
|
©
2o-—~
WW,
|
wn.
Special
soldering
iron
use
of a
solder
sucker.
* H605M
and
H-130.
*
H605E
and
H-130.
Solder
¢ Do
not
touch
the
soldering
iron
to
sucker the area for along time. It may
otherwise cause removal of the
print foil.
e When shifting the pin upward, do
the job quickly while the solder is
melting. If the solder is hard, it
may cause removal or breakage of
the print foil.
e When using a pencil type solder-
ing iron.
1. Completely remove the solder
from each IC pin by use of solder
sucker.
2. Raise each pin by means of an
eyeleteer, hold the pliers then
remove IC package from P.C.B.
Melt the solder on the pin (one elec-
trode) with the soldering iron.
While the solder is melting, shift
the pin upward by the soldering iron
to remove it from the foil.
Remove each pin from the foil
according to the above-mentioned
procedure.
* Special soldering iron
(Refer
to
Technical
Information,
ORDER
NO.
GAD84125486T1)...For
U.S.A.
and
Canada
(Refer to Technical Information, ORDER NO. GAD84115476T8)...For others
°eH—605 Spot Heater (hot-air solder iron)
This device that uses hot air to melt solder was developed to remove Flat-Package ICs, RHCs and chip parts.
°H—605M
(For
120V
power
source)
eH—617
Twin
Nozzle
(for
spot
heater)
*H—605E
(For
200V/220V/240V
power
source)
Special nozzle
for
the removal of
RHCs
and
chip
resistors.
(Nozzle diameter:
1.0mm
x
2)
eH—130 Slim Pencil Solder tron
An ultrasmall ceramic heater solder iron is extremely
handy for soldering chip parts, RHCs, ICs etc., to high-
density circuit boards.
Features:
¢Rated power: 100V, 15W
® Max. temp.: 400°C
° Heater: ceramic (long life)
e insulation resistance: 100MQ
eLength: 178mm
Weight: 16g (not including cord)
eH—131, H—V13 Cap Bits
Solder tip for the slim pencil Solder Iron is composed
of a bit holder and a corrosion resistance solder tip.
Permits changing of solder tips even while still hot.
¢ Solder tip: 0.3mm
Mi FUNCTION OF IC TERMINALS
e 1C901 (UPD1718G514) PLL controller
IN‘oUuT | MARK | DESCRIPTION OF TERMINAL
1~4 OUTPUT LCD4~LCD1 Segment signal output for LCD display
|
come
|
5V
OUTPUT Common of LCD. 2.5V
Smsec.
INPUT Power supply terminal.
INPUT | FM Input for FM OSC output frequency divided to 1/32 or 1/33 by pre-scaler.
Input
for
AM
OSC
output.
1.84V
1.87V
INPUT
Sey
522kHz 1629 kHz
| GND | Ground terminal.
Not used in this unit.
ae ae
Error output of PLL.
12 OUTPUT The frequency is output as a result of comparison between crystal
frequency and FM or AM (MW/LW) station frequency.
Power supply detection.
INPUT CE
H—4V,L-0V
| output [| = x1 | Connecting terminal for crystal oscillator.
INPUT = The crystal connected is at 4.5MHz.
Station detection.
1. Signal received — H (5V)
2. NO signal —>L (OV)
Remote control input terminal.
INPUT REMOTE Power supply connecting.
OUTPUT “H” output in FM mode.
Forcible monaural selection.
~
“H” input with it connected to home-use power outlet socket.
-_
7 INPUT sD
4.8V
OV
Forcible monaural mode
OUTPUT FM MONO
Input terminal for key return signal
i494 INEST nee from external key matrix.
PB3~PBO
OUTPUT
PC3~PC1
OUTPUT MUTE
25~2:
Output terminal for key source
8
signal data.
29~31
This is the output terminal to eliminate shock noise due to unlocking
1. Pin 13(CE)isL->HorH—-L.
4. FMIF selection.
at PLL.
al Sao 5.0V
2. Power switch “‘off"’. ov
INPUT Power supply terminal.
<Muting output >
3. Frequency change. (up/down, FM<«>AM) Muting output operation
34~52 OUTPUT LCD23~LCD5 | Segment signal output for LCD display.