Sharp WF-930Z(BK) Service Manual page 9

TC2 TC1 L5
fH fH fL
SW2 SW2
NG TRACKING TRACKING
TC4 TC3 L8
fH fH fL
SW2 BAND
AND SW2 BAND
AGE COVERAGE COVERAGE
SW301
FM MODE
MONO STEREO
K
+B
C26
VCO
R12
0.0015
100K VR1
(Styrol)
10K (B)
R13
1.5K
16 15 14 13
MPX
VCO
IN
L-CH R-CH
9 10 11 12
R14
1K
C35
R15
4.7/50
10K
R16
C34
10K
4.7/50
STAND-BY/TAPE
RADIO
POWER ON/CD
SW401A
FUNCTION
+B
+B
+B
STAND-BY
SW401D
/TAPE
R119
RADIO
47K
POWER ON
+B
/CD
R117
C155
22K
0.01
SW401 :
FUNCTION
SELECTOR
STAND-BY
SW401C
/TAPE
R158
22K
RADIO
C156
POWER ON/CD
0.01
R118
22K
R120
47K
+B
STAND-BY/TAPE
W401B +B
RADIO
POWER ON/CD
501
C506
80
100/25
L501
504
22µH
02
R505
10K
10.9V
10.3V (10.8V)
(10.3V)
Q504
(10.2V)
0V
8555 D
R506
(0V) 100K 10.9V
(6.9V)
0.7V
0V
Q503
(0V)
VR501 R509
9014 C
R507
2.2K (B) 56K
6.8K
C505
TAPE
0.02
SPEED
R508
470
Q504 : MOTOR CONTROL
HING
7
PIN
NO.
1
2
3
4
LED PWB-A3
5
6
7
1
D522
8
L-34HD
1 1
9
POWER/BATT.
2 2
3 3
D521
4 4
L-34HD
4
FM STEREO
GRAPHIC EQUALIZER PWB-B
C258
0.022
R252
(ML)
1K
R253
C253
2.2K
4.7/50
+B
C251
+B 4.7/50
23 21 19
24 22 20
C252
4.7/50
C254
R254
4.7/50
2.2K
R251
C257
1K
0.022
VR251A
(ML)
50K (B)
10kHz
GRAPHIC EQUALIZER
6 1
1 CNS251
6 5 4 3 2
CNP201
4 3 2 1
6 5
MIC REC : <
VOLUME
Q401, Q402 : MUTING
C401
0.001
+B
(ML)
R403
1K
C403
0.15
(ML) R405
0V
1K
Q401
R401
9014 C
<0.7V>
2.7K
0V
0V
<0.7V>
R402
Q402
2.7K
9014 C
R406
1K
0V
C404
0.15
(ML)
VR401B R404
C402
0.001 50K(B) 1K
(ML)
VOLUME
POWER PWB-A4
1
1 1
2 2
C601 C603
2
0.02 0.02
D603
1N5392
D604
1N5392
C602 C604
0.02 0.02
SW503
CNS502
TAPE2 PLAY
1 1 SW502
TAPE1 MAIN
2 2
+
3 3
–
M501
4 4 M
B TAPE
5 5
MOTOR
A
6 6
7 7
SW501
TAPE2 MAIN
8 8
8 9
Figure 9 SCHEMATIC DIAGRAM (2/2)
IC1 IC2
PIN PIN
VOLTAGE VOLTAGE VOLTAGE
VOLTAGE
NO. FM AM NO.
1 13
0.7V 1.6V 1.7V 1.1V
2 14
1.4V 1.6V 1.7V 1.7V
3 15
4.9V 5.1V 6.2V 1.7V
4 16
1.4V 1.4V 0.7V 1.7V
5 17
1.5V
0V 1.6V 1.7V
6 18
5V 0V 0V 1.6V
7 19
1.4V 5.6V 5.7V 0.4V
8 20
4.9V 5.5V
0V 0V
9 21
4.8V 2.3V 2.3V 5.3V
22
10
2.3V 2.3V 0.6V
11 23
4.6V 6.2V 1.6V
12 24
0.9V 0.9V 1.5V
GRAPHIC EQUALIZER
10kHz 3.3kHz 1kHz 330Hz
VR251B VR252A VR253A VR254A
50K (B) 50K (B) 50K (B)
50K (B)
C261 C265
C269
0.033 0.1
0.33/50
(ML) (ML)
C267
C259
0.01
0.001
(ML)
(ML)
9
17 15 13 11 7 5
8 6
18 16 14 12 10
C268
0.01
(ML)
C266
C274 C270
0.1
1/50 0.33/50
(ML)
VR254B VR253B
VR255B
50K (B) 50K (B)
50K (B)
X-BASS
330Hz 1kHz
GRAPHIC EQUALIZER
>
IC401
BA5415
POWER AMP.
C411
C405
100/16
4.7/50
5 3
C409
R407
100/10
4 2
NF OUTPUT
33K
C417
47/25
7 FILTER
GND 12
C420
22/25
9
R408 NF OUTPUT 11
33K
C410
100/10
8
10
C406 STAND C412
-BY VCC
4.7/50 100/16
6 1
C419
2200/25
BATTERIES
DC12V [ "D" size (UM/SUM-1,
R20 or HP2) battery x 8
AC220V – 240V
50/60Hz
AC110V – 127V
50/60Hz
0V
F601
T601
T1.25A
POWER
L 250V
TRANSFORMER
FM SIGNAL
MW/SW1/SW2 SIGNAL
PLAYBACK SIGNAL
RECORD SIGNAL
10
– 9 –
MIC REC : < >
HI-SPEED DUBBING : ( )
IC401
PIN PIN
VOLTAGE
VOLTAGE
FM AM NO. NO.
1
1
0V 12V
2 2
1.7V 5.9V
3 3
1.7V 9.9V
4
4
1.7V 0.6V
5 5
1.7V
0V
6 6
1.6V 12V
7
7
0.9V 10.8V
8 8
6.2V
0V
9 9
6.2V 0.6V
10
10
1.1V 9.9V
11 11
1.6V 5.9V
12 12
1.6V 0V
13
14
15
16
17
18
19
X-BASS
20
VR255A
21
50K (B)
22
23
24
C273
1/50
3 1
4 2
C262
0.033
(ML)
VR252B
50K (B)
3.3kHz
+
R-CH
–
C413
0.22 –
(ML)
L-CH
+
R415
J401
100
SPEAKERS
TERMINAL
J403
HEADPHONES
R416
100
C416
1000/16
C414
0.22
(ML)
SW601
VOLTAGE
SO601
SELECTOR
AC POWER INPUT
SOCKET
11
WF-930Z
IC101 IC251
PIN
VOLTAGE
VOLTAGE
NO.
1
0V 4.3V
2
0V 4.3V
3
1.2V 4.9V
4
1.3V 4.9V
5
1.4V 4.3V
6
1.3V 4.3V
7
0V 4.9V
8
0V (3.5V) 4.9V
9
2V 4.3V
10
1.3V 4.3V
11
0V 4.9V
12
0V 4.9V
13
0.9V 4.3V
14
0V 4.3V
15
1.3V 4.9V
16
2V 4.9V
17
1.4V 3.2V
18
5.5V 2V
19
1.6V <0V> 2V
20
1.4V 3.2V
21
1.3V 2.6V
22
1.2V 2.6V
23
0V 5.23V
24
0V 0V
SP703
TWEETER
R-CH
SPEAKERS
SP701
WOOFER
SP702
WOOFER
L-CH
SPEAKERS
SP704
TWEETER
12