Service manual

QT-CD161/141
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Figure 13 BLOCK DIAGRAM (3/3)
X IN
FM IN
X OUT
VSS
AM IN
IF IN
VT
AM MIX OUT
X1
4.5MHz
DOUT
DATA
PERIDO
OF1
CF2
AM IF IN
AM OSC AM MIX OUT
FM IF IN
AM IF IN
GND
AM RF IN
FM DET
DET OUT
STEREO
TUNER
MPX VCO
MPX IN
R-CH OUT
L-CH OUT
MO/ST
FM DET
T2
VR1
VCO
FM+B
FM RIPPLE
FILTER
TO MAIN
SECTION
CF1
VT
VT
F1
B.P.F
L1
VD1
FM RF
L2
VD2
FM OSC
T1
FM IF
Q1
FM+B
FM ROD
ANTENA
24
22
20
18
13
16
10
15
9
1
2
8
7
6
5
3
4
5
6
12
11
10
2
1
13
14
1
6
3
4
9
7
8
IC3
TC9216P
PLL
+B
21
+B
+B
IC2
LA1805
FM /AM/IF APX.
IC1
TA7358AP
FM FRONT END
5
T3
AM IF
Q5
Q6
AM OSC OUT
VT CONTROL
Q3
Q4
L3
AM ANT.
VD3-1
TC1
L4
AM OSC.
VD3-2
23
24
3
4
5
6
19
20
13
13
14
11
13
76
79
56
72
27
24
32
31
23
12
22
16
10
7
6
17
SW504
MEMORY
SW503
BAND
SW502
TUNER DOWN
SW501
TUNER UP
SW505
PRESET DOWN
SW506
PRESET UP
LCD DISPLAY
LCD501
11
10
9
8
7
6
5
4 3 2 1
1213
14
15
16
17
18
19
20
21
MONO/ST
IC501
CD/TUNER CONTROL
MICROCOMPUTER
Q501
Q502
TUNER
+B
IC502
RESET
RX501
RESET
A-GND
AUDIO
+12V
+5V
VOLTAGE
REGULATOR
ZD1
D GND
TUNER +B
SW601
MAIN
,
SW702
PICKUP IN
~~
TO CD
SECTION
X501
RF AMP.
CLOCK