12
12
WM-FX488
4-4. SCHEMATIC DIAGRAM – MAIN SECTION (1/3) –
z
Refer to page 9 for Notes.
Ver 1.1 2003.01
JC6
R3
C700
C8
R1
C44
C5
C7
C2
R40
C6
C9
CF3
CF1
X1
C15
L1
0.1
µ
H
C10
C28
C21
D3
C18
R6
C29
L5
C30
C23
R8
C24
R9
C31
CT1
L2
C20
C26
D2
R5
FB1
C17
R4
C16
C4
R2
TAP1
C1
R7
JC2
D1
R20
R21
C3
R716
Q703
IC1
C56
C22
L3
C46
R16
R11
R12
D5
C14
C13
C11
C12
C41
0
10k
4p
0.47
1k
0.022
0.047
470p
4.7
16V
0k
22
6.3V
220
4V
0.022
5p
470p
2200p
MA2S357
1p
10k
22p
AM-OSC
470p
0.022
470k
0.022
470k
0.022
10p
FM-RF
2200p
2200p
MA2S357
100k
0.01
4.7k
0.01
0.1
10k
100p
10k
0
SVC347-T-TL
22k
22k
100p
2.2k
2SB815B7
TA2154FN-(EL)
6p
6p
27nH
0.001
0
1k
1k
MA2SP0100LSO
1000p
L OUT
R OUT
IN
OUT C
RF OUT
RADIO ON
GND
BAND1
BAND2
IF-IN
IF-REQ
OSC IN
VT
LOCAL/DX,
*
1
*
1
*
2
*
2
AM
ANTENNA
L4
BAR
FM
TRACKING
TRACKING
AM
CT1,L4
FREQUENCY
COVERAGE
L2
RADIO
SWITCH
ON/OFF
FM/AM
FRONT END
IF DET,FM MPX
L5
AM
6E
E,CH
6E
E,CH
*
1 C13,14
0.1
0.047
6E
E,CH
*
2 C11,12
0.0047
0.01
E,CH
STEREO/MONO