12
12
WM-GX400
4-6. SCHEMATIC DIAGRAM – MAIN SECTION (1/2) –
z
Refer to page 17 for Notes.
z
Refer to page 17 for Waveforms.
z
Refer to page 18 for IC Block Diagram.
C3
C7
C12
R3
C8
R6
RV1
C17
C18
C19
TP1
R8
C21
C23
C37
R2
C4
C5
C6
C9
R4
C11
D406
R256
C201
R360
C354
C355
C352
R378
Q355
R358
R359
C356
R251
R151
R357
R356
C151 R152
R258
C256
R201
R203
R254
R255
C254
C204
C10
C16
RV2
C44
CT1
C24
R14
C29
L7
R18
R19
C43
R13
C48
R10
C25
D4
R20
L6
C49
C30
R17
C42
D2
C26
C34
C40
R15
D1
C403
R404
D401
D402
C401
C402
C408
R401
C404
C405
R403
C407
R402
C406
Q307
R313
R312
C186
R505 C187
FB303
D403
C409
C410
C28
R105
R205
L401
CN301
Q3
C358
C152
C357
R159
C105
C156
R158
R156
C101
R155
C154
R154
C104
R107
R104
C103
R101
R103
R157
C155
C205
C252
R259
R204
R207
C203
R353
C255
R257
JC3
R352
C20
C39
R11
J302
C251
R252
R21
C32
Q401
Q308
Q356
Q354
IC302
C50
T401
R5
Q1
C2
R1
Q2
JC2
R22
L4
100p
470p
4.7
4V
2.2k
0.47
2.2k
4.7k
10
4V
0.022
0.022
10k
0.01
22
4V
2200p
0
0.1
0.1
1
22 4V
470
1
1SS367
2.2k
1
4.7k
22
4V
47
4V
4.7
4V
1k
2SC4116
1k
3.3k
47
4V
3.3k
3.3k
47k
10k
0.047
1k
10k
2200p
15k
330k
10k
6.8k
1
47
4V
100p
4.7
4V
100k
1000p
10p
0.022
100k
4700p
AM OSC
22k
100k
1000p
150
1000p
4.7k
4p
KV1471E
1k
27nH
1000p
10
4V
10k
1000p
KV1471E
0.01
0.01
0.01
100k
KV1520-TL
0.01
47k
MA111
MA8130
1000p
1
10p
1k
0.01
22
4V
22
0.022
100k
5p
2SA1586
2.2k
47k
0.01
100k
0.01
1SS367
2.2
6.3V
0.01
470p
15k
15k
22P
2SC3931
LPF
47
4V
0.01
1
10k
2200p
2200p
10k
2.2k
1
6.8k
1
10k
47
4V
220k
220
0.01
15k
330k
0
1
2200p
0.01
10k
220
220k
0.01
10k
1
0
0
1k
1
1000p
10k
0.047
1k
0
1000p
2SC3931
RN1311
2SA1586
RN1311
CXA2500N
1
DC DC CON
TRANCE
FM RF
1 2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
*
*
*
*
*
*
*
FM IN
AVLS
N/R SW
REC
TAPE
MUTE
LED
GND
TUNER VCC
GND
LPF OUT
AM IN
MIC
MIC GND
MIC VCC
MONO
COMP
X SD
BAND
RADIO ON
BEEP
GND
MPRM
V12M
MUTE
AAGC
DETO
MPXI
PLT2
PLT1
PLL1
PLL2
TVRO
REGV
FTLO
FMBF
AMLO
FALC
PLLO
COMP
BAND
TUNE
AM
ANTENNA
FERRITE ROD
AM TRACKING
L3
RV2
AM IF
FM VCO
MIC
(PLUG IN POWER)
FM TRACKING
CT1,L7
DC-DC
CONVERTER
TUNER B+
SWITCH
TUNER B+
SWITCH
SWITCH
GATE
GATE
REC/PB AMP
PRE AMP
ATT
SWITCH
C2
JC2
Q1
R1
R5
R22
Q2
CND,5E
E,9E,CH,
470P
100P
100P
JC
-
-
2SC4098
2SC4116
2SC4116
-
RN1311
JC
47
-
-
10k
47k
RN1311
47
10k
47k
FR
AEP,EA,JEW
BOARD
DISPLAY
CN701
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299