Service manual
MD-X8
– 54 –
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• NOTES ON SCHEMATIC DIAGRAM can be found on page 31.
Figure 54 SCHEMATIC DIAGRAM (11/20)
3
2
1
14
13
12
11
10
9
8
7
6
5
4
3
2
1
151413121110
987654321
14
15
13
12
11
10
9
8
7
6
5
4
3
2
1
+B
+B
+B
+B
+B
+B
+B
+B
12V
11.8V 18V
12.4V
11.8V
10.7V
11.2V
10.7V 11.2V
10.5V 11.2V
11.2V
9.3V
15V
9.9V
9.9V
15V
9.3V
9.2V
8.6V
8V 15V
5.6V
11.5V
6.2V
10.4V
18V
0V 0.7V
0V
17.8V
13.4V
12.9V
+B
+B
FM SIGNAL
P41 12-F
TO MAIN PWB
CNP920
–B
VOLTAGE
REGURATOR
–B
Q86
0
VOL
T
RE
G
32
1
0
4.6V
2
M_GND
+15V
CD_GND
CD_7V
CD_9V
D_GND
A_GND
A_11V
CNP910
P41 12-G
TO MAIN PWB
–B
POWER AMP.PWB-B2
POWER AMP.
GND
–B
+
––
+
0V
0V
4.5V
4.5V
0V
–34V
34V
34V
0V
+B1-1
–B1-1
GND1-1
A_10V(MD)
A_GND(MD)
+B(MD)
D_GND(MD)
VLOAD
–15V
BL_L
P_IN
POWER
PROTECT
L_IN
A1_GND
R_IN
+B
+B
+B
R246
15K
D872
1SS133
C240
100/
POSISTOR
RP821
C885
0.022
C884
220/16
C882
0.01
R882
10K
R880
470
C880
1/50
C881
0.022
Q880
2SD2012
ZD840
UZ130BSA
R840
1K
FR841
2.2
POSISTOR
RP870
C831
47/25
C830
100/10
R871
100
CNP820
Q862
KRC107 M
C861
47/25
C860
100/16
R861
220
C888
6800/25
C867
0.022
C868
0.022
C843
0.022
R841
100
C840
100/16
Q841
2SD2012
Q840
KTC3199 GR
C841
47/25
C842
0.022
Q851
2SD2012
C850
100/16
C851
47/25
Q850
KTC3199 GR
C852
0.022
R852
220
R853
1K
Q831
2SD2012
C832
0.022
Q820
KTC3199 GR
R820
2.2K
C820
100/16
Q821
2SD2012
Q830
KTC3199 GR
R831
220
R832
100K
C821
47/25
C822
0.022
FR811
0.9
C816
100/10
C817
0.022
C818
0.022
R811
100
ZD810
MTZJ6.2C
C815
100/10
Q811
2SD2012
R813
1K
R821
220
C823
0.022
ZD820
UZ11BSA
Q860
KTC3199 GR
Q861
2SD2012
R830
1K
C883
1/50
R889
220K
R883
68K
R884
22K
R886
10K
IC802
NJM431
R887
150K
R888
2.2M
Q881
KTC3199 GR
FR842
2.2
C872
0.1/50
Q871
R260
0.2
(1W)
C250
0.022
R253
10K
R247
2.2K
IC201
STK40705
C203
470P
CNP810
R212
330
C210
47/50
R203
56K
C204
470P
R205
100
R204
56K
C221
1/50
1
1
Q252
KTC3199 GR
R256
1K
C251
0.022
(1W)
R252
0.2
(1W)
R254
10K
Q251
KTC3199 GR
R255
1K
R251
0.2
(1W)
R259
0.2
R228
4.7
4
R201
100K
R202
100K
C238
4700/50
C237
4700/50
C241
47/25
C242
0.022
ZD241
UZ11BSC
C222
1/50
R206
100
R243
820
(2W)
FR201
100
C209
47/50
R211
330
C205
47P
C206
47P
R209
56K
C207
15P
FR202
100
R261
8.2K
R266
4.7
L204
3µH
R265
4.7
L203
3µH
R210
56K
C208
15P
C223
100/35
C215
100/35
R244
22K
R245
68K
Q253
2SB1238 R
0V
–5.6V
–34V
–34V
34V
–7V
0V
–34V
8
7
6
5
4
3
2
1
PIN
NO.
VOLTAGE
IC201
0V
0V
34V
0V
0V
–34V
0V
15
14
13
12
11
10
9
ZD851
UZ6.8BSB
POSISTOR