Elenco Electronics AM/FM-108CK Assembly And Instruction Manual page 35

ASSEMBLY INSTRUCTIONS
R24 - 1kΩ Resistor
(brown-black-red-gold)
C21 - .01μF Discap (103)
C19 - .01μF Discap (103)
R21 - 47kΩ Resistor
(yellow-violet-orange-gold)
TP9 - Test Point Pin
(See Figure A)
T3 - FM IF Coil
(Green Dot)
TP8 - Test Point Pin
(see Figure A)
Q6 - 2N3904 Transistor
(see Figure C)
R20 - 10kΩ Resistor
(brown-black-orange-gold)
R22 - 1kΩ Resistor
(brown-black-red-gold)
C22 - .01μF Discap (103)
T5 - FM Detector Coil
(Blue Dot)
Be sure that the
Test Point Pin
negative lead is
in the correct
hole on the PC
board.
Warning:
If the capacitor is connected with
incorrect polarity, it may heat up
Foil Side
and either leak, or cause the
of PC Board
capacitor to explode.
Figure A
FM Detector Coil (T4)
Notch
Note: The line or notch must be pointing to the
top of the PC board. Some FM detector coils
have a part number in place of the line/notch.
Note: The line or
notch must be
pointing to the top
of the PC board.
Lytic Capacitor
Polarity
Mark
( ) (+)
Figure B
Line
Notch
T4
Line
NPN Transistor
Flat
Mount so E lead is
Side
in the arrow hole
and flat side is in
the same direction
as shown on the
EBC
top legend. Leave
B
1/4" between the
part and PC board.
E C
Figure C
Figure 28
-34-
R23 - 100Ω Resistor
(brown-black-brown-gold)
C23 - .02μF (203)
or .022μF (223) Discap
R25 - 220Ω Resistor
(red-red-brown-gold)
C24 - 470μF Lytic
(See Figure B)
D2 - 1N34A Diode
(see Figure E)
R26 - 1kΩ Resistor
(brown-black-red-gold)
R28 - 10kΩ Resistor
(brown-black-orange-gold)
C25 - 10μF Lytic
(see Figure B)
R27 - 1kΩ Resistor
(brown-black-red-gold)
D3 - 1N34A Diode
(see Figure E)
T4 - FM Detector Coil
(Pink Dot)
(see Figure 28)
Diode
Band
Anode Cathode
Be sure that the band is in the correct
direction.
Figure E