Schematic Diagram / Wiring Side Of P.w.board - Sharp WF-930Z(BK) Service Manual

WF-930Z
A
FM/SW
ROD ANTENNA
BAND
SELCTOR
SW1G
D1
1N4148
B
C
MW/SW1
BAR ANTENNA
J102
L-CH
CD/LINE
R-CH
D
J101
MIXING
MICROPHONE
MIC101
BUILT-IN
MICROPHONE
E
TAPE2
PLAYBACK HEAD
CNS101 CNP102
1 1
L-CH
2 2
3 3
R-CH
RECORD/PLAYBACK CNS103 CNP104
HEAD
1 1
2 2
L-CH
3 3
4 4
F
R-CH
ERASE
HEAD
TAPE1
G
MAIN PWB-A1
VOLUME PWB-A2
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 12.
1
FM BAND PASS
FILTER
BPF1
1 2 3
FM
C1
MW 10P
(CH)
SW1
C2
SW2
0.001
SW1 : BAND SELECTOR
L5
SW1C
SW2 SW2
SW1H
SW1 SW1
MW MW
SW2
FM FM
ANTENNA
FM
SW1D
MW
L4
SW1
SW2
VC7
SW1
ANTENNA
C36 TC7
L3
5P
C11
(CH)
5P
(CH)
C10
5P
(CH)
FT1
FINE TUNING
R150
47K
R151
47K
R152
2.2K
R140
1K
C142
0.018
(ML)
R141
4.7K
HI-SPEED DUBBING : (
C141
1/50 MIC REC : <
R138
1K
SW101 : RECORD/PLAYBACK
SW102
BEAT
CANCEL
C128
330P
2
Figure 8 SCHEMATIC DIAGRAM (1/2)
RF AMP.
MIX
GND
1 2 3 4 5 6 7
C4 C7
5P 3P
(CH) (CH)
R2
33
C8 FM IF
15P
T1
(CH)
C3
20P
(CH)
C41
C44
C5 R1
0.02 0.02
0.05
100
+B
R7
SW2
SW1F
47
SW1
C15 SW2
MW
0.0047 OSC.
(styrol) L8
FM
C14
0.0015
FM
(Styrol)
SW1B
MW
SW1
SW2
SW1
OSC.
VC8
C13
L6
300P
MW
OSC.
TC8
C18
0.02
C16 C37
C43
10P 5P
0.02
(CH) (CH)
SW101F
RECORD/
PLAYBACK
MIC AMP.
R153
R142 R145
Q101
2.2K
330K 4.7K
9014 C
MIC
C144
2.2V
MUTING
C148
1/50
C146
47/10
0.7V Q102
1/50
9014 C SW103 :
0.1V (0V) R147 DUBBING SPEED
10K /MIC
(0.7V)
HIGH/
C145
MIC OFF
(0V)
220P
R146
C143
0.001 10K
OFF/MIC ON
)
R136
>
R134
4.7K
10K
C140 Q103
9014 C
10/25
<0.7V>
LINE AMO.
R137
R123
C121
8.2K
1.2K
130P
R101
L101
22mH
C107
0.033
(ML)
24 23
CH2 CH2
/A /B
R P R P
CH1 CH1
SW101D SW101C /A /B
SW101B SW101A 1 2
R P R P
C108
C125 C126 0.033
(ML)
150P 150P
L102
R102
22mH
R124
BIAS
1.2K
OSC.
L105
BIAS
OSC.
R125
C B A
27K
0.6V
C131
C130
0.0082
0.02 (ML)
C132
0.012
(ML)
3 4
– 8 –
L1
fL
FM
TRACKING
IC1
OSC TA7378P L2
FM FRONT END fL
VCC
FM BAND
8 9
COVERAGE
R3
FM IF
220K
CF1
10.7MHz
3 1
R4
47
2
C39 C9
0.001 0.02
R5
C19
100
0.02
SW2
SW1
MW
FM 24 23 22
AM AM
SW1A
RF
OSC
BAND
SELECTOR
FM IF
AM
R6
SW1E
IN MIX
47
FM
1 2
3
MW
L7
SW1
C30
SW2
0.04
C27
1/50
C28
C29
T3
100/10
0.02
AM IF
+B
R8
100
D4
1N4148
P
R
R148
220
+B
SW103B
C42
D105 D5
1N4148 4.7/50
1N4148
NORMAL
D6
R159
1N4148
22K
D101
R149
1N4148
4.7K
D104
<0V>
1N4148
C149
10/25
<0V>
R109
R161
R113
22K
56
68K 2.2K
R103
180K
R111
180K
R107
4.7K
21 20
22 19 18 17 16
NF MATAL PRE A/B VCC REC
OUT OUT OUT
IC101
PRE AMP.
TA8189N
MATAL PRE MIX REC
GND1
NF OUT OUT OUT M/N OUT
4 6
3 5 7 8 9
R104
180K
C135
R129
R112
R106
22/16
10K
180K
5.6K
R108
R130
4.7K
10K
R114
R162
2.2K
R110
68K
22K
56
+B R131
10K
R132
220
R
4.6V R127
100
0.4V
P
R128
100
SW101 : RECORD/PLAYBACK
HI-SPEED DUBBING : ( )
NORMAL SPEED : OTHER
5
TC5 L3 TC7 L4 TC2
fH fL fH fL fH
SW1 SW2
MW
TRACKING TRACKING TRA
TC6 L6 TC8 L7 TC4
fH fL fH fL fH
SW2
MW BAND SW1 BAND
COVERAGE COVERAGE COV
SW3
FM M
R10
C21
MONO
470K
0.04
+B
FM DET C22
C20 R1
470P
T2
0.0039 100
(ML)
R11
22K
R9
3.9K
21 20 19 18 17 16 15
AM FM MPX
VCC
IC2
DET DET IN
LA1805
OUT
AMP. & FM MPX.
AM
GND GND GND
L-CH R-CH
IF
4
5 6 7 8 9 10
+B
R1
10
3 1
R1
10
2
STAND-
POWE
+
+B
R510
D503
22K
1N4148
+B
R154
C150 100
22/16
C153
0.001
R155
330K
C117
0.015
R115 L103 R119
(ML)
2.7mH 47K
220
C119
4.7/50 +B
C151
C155
330P
0.01
15 14 13
REC ALC
REC
NF IN
R158
REC REC
GND
NF IN 22K
10 11 12
C156
C152
0.01
330P
C120
4.7/50
R116 L104 R120
C118
220 2.7mH 47K
0.015
(ML)
C154
0.001
+B
VOLTAGE
REGULATOR
Q501
D501
STA
SW401B
8050 D
1N4148
RAD
7.6V 12V
POW
R501
680
8.2V
C504
R502
0.02
R
100
1
D502
(10.2V)
MTZJ8.2C
0V
Q502
(0V)
9014 C
(0V) 0.7V
(0.7V)
0.7V
0
0V
Q503
(
9014 C
R503
0V
10K
(0V) C505
0.02
+B
Q502, Q503 : SWITCHING
6