Read Sharp QT-CD161H (serv.man2) User Guide / Operation Manual online
QT-CD141H/161H//162H
– 13 –
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
3
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
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
18
25
13
14
11
15
72
56
79
76
27
24 31
30 23
12
22
16 10 7
17
SW504
MEMORY
SW503
BAND
SW502
TUNER DOWN
SW501
TUNER UP
SW505
PRESET DOWN
SW506
PRESET UP
MEMORY
SW503
BAND
SW502
TUNER DOWN
SW501
TUNER UP
SW505
PRESET DOWN
SW506
PRESET UP
LCD DISPLAY
LCD501
11
10
10
9
8
7
6
5
4
3
2
1
8
7
6
5
4
3
2
1
12
13
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
+12V
+5V
VOLTAGE
REGULATOR
ZD1
D GND
TUNER +B
SW507
CD LID
CD LID
OPEN/CLOSE
,
SW702
PICKUP IN
~~
TO CD
SECTION
XL501
4.19 MHz
RF AMP.
CLOCK
1
2
3
Q10
161H/162H
ONLY
SWITCHING
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