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TELESCOPIC
ANTENNA
ECB
Q17, 18
MAIN CIRCUIT BOARD
re
oe
rf hae' 2"
PY
PP
th
Ok
yn
SS)
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a
:
pat amd =) $)
ee
Sas
pf on ance af rocgemle =f epee
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teen
G6 05 G4 88 47 Q10
—H
EVICiIWW
§=mc2 wy
+
BATTERY 45v
(UM- 3x3)
ai
740)
RF-B20L
6
t
8
Bl
We
C Peer
=
Zane bo See
24
aid
O16
a5 QS QIT a22
@ Replacing Chip Parts
(Removal)
Ca
Cathode
Cathode
Anode
Cathode
Anode
aoe
Cathode
D1
D2, 9, 10, 11
Ds
= fft=
Hold the chips with tweezers as shown in Fig. 1, and
alternately touch the soldering iron (for less than
three seconds) to the soldered part on either side of
the chip. Gradually lift the chip up and remove it.
Caution: Removing the chips all at once will break the
plating on the circuit board.
location (do not permit the parts to shift).
Note: If allowed to shift, the part may interfere with
the mechanism.
*Use only one millimeter at the end of the
soldering iron
9
ry 3 [[SPEAKER
+
—~S5em 82
Soldering iron
G20
Q2!
23
This printed circuit board is shown from the back side of
chip parts.
Notes:
1. The circuit shown
in (
indicates printed circuit
printed circuit board.
2. The circuit shown
in ( (me)
on the conductor
indicates printed circuit on the front side of the
printed circuit board.
3. The symbols (@) shown in the circuit board indicate
connection points between conductors on the front
side and back side of the circuit board.
)) on the conductor
he back side of the
eThis circuit board diagram may be modified at
any time with the development
of new tech-
nology.
General
- Dede
Be
||
Cathode
Anode
Cathode
ie)
pe
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