Sharp QT-CD111H Service Manual page 14

QT-CD111H/110H
A
ROD ANTENA
F1
B.P.F.
1 2 3
D1
B
1N4148
IC1
FM
TRACKING
PIN
NO. VOLTAGE
fL fH
0.9V
1
2 1.6V
3 6.8V C4
22P
4 0V
(CH)
5 0V
L1
6.8V
6 FM ANT.
7 1.4V
8 6.2V
9 6.8V
C
220P
C11
D
R456
6.8K
R-CH
1
AUDIO GND 2
L-CH
3
R455
CD +7.4V 4
6.8K
DIGITAL GND
5
POWER GND 6
MUTE 7
R229
E
10K
330
R102
TAPE
RECORD/PLAYBACK
SW102-C
HEAD
R
F
L-CH
1
1
2 2
R-CH
3 3
4 4
ERASE HEAD
R
SW102-E
R
P
SW102-H
G
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 9.
1
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R5
330K
C8
C14
IC1 4P
0.022
(CH)
LA1186N
FM FRONT END FM BAND
COVERAGE
RF AMP.
7
fH
fL
1
2 3 5 9 6 8 4
R2
33
C2
C5
0.001
33P
(CH)
R25
120
VC1
C6
18P
TC1
(RH)
R3
47
R9
R1
22K
10
T1
R7
C15
C10
FM IF
390
0.022
0.022
L3
C17
AM BAR ANT.
0.022
TC3
TC4
C46
2P
(CH)
L4
AM OSC.
R458 R457
1K
1K
fH fL
AM BAND
COVERAGE
R104 C105
R103
18K 0.0018
18K
R105
15K
0.018(ML)
R109
330
120
R101
SW102-B C109 3
R107
270P
R P NF1
1K
P
5 IN1
C107
C111
820P
330P
IN2
9
NF2
C112
11
C110
C108
330P
270P
820P
R
R108
P
P
1K
SW102-D
R110
C106
120
0.0018
R106
15K
2 3
Figure 14 SCHEMATIC DIAGRAM (3/4)
R6
820K
C38
C37
0.022
C39
C22
220/10
0.022
0.0039
FM DET
R27
33K
T2
24 20 22 21 20 19 18 17 16
IC2
LA1805
FM/AF IF MPX.
AGC
C26
1 2 3 4 5 6 7 8
22/16
AM IF
C20
1 3
0.022
1 3
T3
2 CF2
2
CF1
C21
0.022 C33
1/50
fH R13
AM
3.3K
fL TRACKING
R15
10K
C36
0.022
D202
1N4148
C115
R113
SW102-A
8.2K
R115 R117
3.9K 3.9K
C113
C121
47/16
0.01
1
PRE AMP
OUT1 8
IC101
VCC
BA3311L
FILTER 10
REC./P.B. 100/10
EQUALIZER AMP.
ALC T
2
GND OUT2
R125
4 6 7 680K
12
C118
SW102-F
C114
10/16
47/16 R116
3.9K
R120
R114 R118
C116
3.3K
8.2K 3.9K
0.018
(ML)
4
– 14 –
R11
1.2K
C24
470P
VR1
VCO
6.8K
C25
(B)
3.3/50
C27
R29
3.3/50
15K
MPX VCO
15 14 13
CK 76kHz
12
9 10 11
C35
1/50
C34
1/50
R14
SW201-A
3.3K
CD
AUTO
FM
AM
TAPE
SW201-B
CD
AUTO
FM
AM
R16
10K TAPE
R121
1K
R123
10K
P
R
D103
1N4148
C123
P
R
L301
R122
R124
1K
10K
C351
0.0022
C352
(ML)
220/10
5 6
J
8
SW102-G
P
R
R351
220
150 47K
R353
R352 <
C353
0.022
(ML)