Schematic Diagram / Wiring Side Of P.w.board - Sharp WF-930ZBK Service Manual

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