Sharp MD-X7H Service Manual page 90

MD-X8H
FM SIGNAL
POWER AMP.PWB-B2
IC201
PIN
NO. VOLTAGE
A
1
–34V
2
–34V
3
34V
4
–7V
5
–5.6V
6
0V
7
0V
8
–34V
9
34V
10
0V
11
0V
12
–34V
B
13
0V
14
0V
15
0V
R_IN
1
A1_GND
2
L_IN
3
PROTECT
C
4
POWER
5
P_IN
6
7
BL_L
8
GND
9
–15V
10
VLOAD
11
D_GND(MD)
12
+B(MD)
13
A_10V(MD)
14
A_GND(MD)
D
15
E
A_11V
1
2
A_GND
3
4
D_GND
F
5
6
CD_9V
7
8
CD_7V
9
CD_GND
10
11
+15V
12
M_GND
13
14
G
+B
H
• NOTES ON SCHEMATIC DIAGRAM can be found on page 31.
1
IC201
STK40705
POWER AMP.
1
R205
100
C221
R201
1/50
100K
C203
470P
R211
330
C209
47/50
C210
47/50
R212
330
R202 C204 R204
100K 470P
56K
R206
100
C222
1/50
D872
1SS133
+B
C241
47/25
–B
C818
0.022
+B
+B 8V
8.6V
C831
47/25
–B
+B –B
Q851
2SD2012
10.5V 11.2V
KTC3199 GR
10.7V
10.7V
C851
47/25
11.2V
C850
100/16
+B
C884
220/16
R889 R887
150K
220K
+B
C883
R888
1/50
2.2M
Q881
KTC3199 GR
2
Figure 54 SCHEMATIC DIAGRAM (11/20)
+
–
2 3 4 5 6 7 8 9
FR202
100
C205
47P
C207
15P
R209
56K
FR201
100
C243
0.022
R210
56K
C208
15P
+B
ZD241
UZ11BSC
C242
0.022
R243
POSISTOR
Q811 820
FR811
2SD2012
(2W)
0.9
5.6V
R811
11.5V
100
6.2V
C815
C816
C817
100/10
100/10
0.022
Q821
+B
Q831
2SD2012
9.3V 15V
2SD2012
15V
Q830
9.9V
KTC3199 GR
9.9V
9.3V
R830
10.4V
1K
9.2V
C820
C821
100/16
R831
47/25
220
C830
100/10
Q841
2SD2012
11.2V
FR842
2.2
Q850
11.8V
C841
11.2V
47/25
R852
220
Q880
R882
2SD2012
10K
R883
C882
68K
0.01
R884
R880
22K
470
1 3
C881
2
R886
IC802
0.022
10K
NJM431
VOLTAGE
REGURATOR
3 4
– 54 –
+
–
10 11 12 13 14 15
R253
10K
C250
0.022
R245
R251
68K
34V
(1W)
–34V
34V
+B1-1
C237
4700/50
GND1-1
C238
4700/50
–B1-1
+B
R813
1K
ZD810
MTZJ6.2C
POSISTOR
RP821
Q820
15V
KTC3199 GR
R820
R821
2.2K
220
C823
ZD820
0.022
UZ11BSA
FR841
2.2
18V
Q840
R840
KTC3199 GR
1K
11.8V 18V
R841
100
12.4V
C840
100/16
C843
POSISTOR
0.022
RP870
C880
1/50
5
Q251
KTC3199 GR
0V
4.5V
D
Q252 1S
0V
KTC3199 GR
0V
4.5V
D
1S
0V
R265
0.2
4.7
C251
R
0.022
L203
4
(1W)
3µH
C
R252
R256
0
0.2
1K
(1W)
C220
0.1
C
(ML)
0
(
L204
R228
3µH
4.7
R266
4.7
+B
–B
R871
100
4.6V
2
1
C872
0V
0.1/50
+B
C888
6800/25
C868
Q861
0.022
2SD2012
12V
17.8V
Q860
KTC3199 GR
12.9V
1
C861
R861
47/25
220
13.4V
C860
C867
100/16 0.022
Q862
R
KRC107 M
2
0V 0.7V
3 2
1
0V
Q860
VOLT
REGU
+B
6