D-F20
14
14
5-3. BLOCK DIAGRAM — TUNER SECTION —
Signal path
: FM
: AM
: CD PLAY
L1
VCPU+2V
XDCDT
CT3
D3
L3
AM
FERRITE-ROD
ANTENNA
CT3,L4
AM
TRACKING
CT1,L2
FM
TRACKING
BUFFER
Q61
DC/DC
CONVERTER
Q86
R-CH
R-CH
VDD+2V
D601
D304
D302
TU VCC
TU VCC
Q3
Q6
Q2
TU VCC
L4
HEADPHONE AMP
IC302
TUNER/CD
SIGNAL SELECT
IC303
IF OSC
AMP
Q60
LPF
Q84,85
DISPLAY PANEL
LCD1
74
75
45
32
31
30
25
21
X61
75kHz
X1
10.7MHz
TU VCC
TU VCC
HOLD
AVLS
HIGH/BATT
12
B+ SWITCH
Q4,5
B+ +3V
VCPU+2V
TU VCC
S813
(LOCAL/DX)
S812
STEP
9k
10k
AVLS
S802
S801
(CD DOOR OPEN)
VCPU+2V
OPEN
AVLS
HOLD
NORM
LIMIT
HOLD
S803
OFF
ON
ESP
S804
OFF
ON
LOCAL
DX
R-CH
A MUTE
CD-L
CD-R
T81
D80
KEY MATRIX
S805 - 811
VOLUME
RV301
MAIN BOARD (2/3)
TU VCC
OPEN
J302
i
(Page 13)
(Page 15)
(Page 15)
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