Sharp QT-CD111H Service Manual page 14

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