Akai ADP-841, Service Manual

Page: 5 / 39

5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
)
V18
FV18
PWD_B
PWD_P
-10V_TFT
PWD_P
9VIN
+5V_TFT
CTR_TFT
V18
+3.3V
+7.5V_TFT
+17V_TFT
PWD_B
9VIN
+3.3V
+3.3V_TFT
+5V_TR
+5
V
_T
R
A
N
CTR_TFT5V
+3.3V
+3.3V
9VIN
CTR_TFT5V
+3.3V_TFT
+5V_TFT
GND
CTR_TFT
+3.3V
+7.5V_TFT
INV_17V
+17V_TFT
INV_17V +5V_TRAN
-10V_TFT
V18
-10V_TFT
+3.3V
9VIN
+5V_TFT
CTR_TFT
PWD_P
PWD_B
+7.5V_TFT
+17V_TFT
GND
+3.3V_TFT
C255
0.1uF
C208
0.1uF
F201 FB
+

U22B
LM393D
5
6
7
8
4
L204
CR54/47uH
C231 1uF/50V
C247
100u/6.3Vopen
C248
220u/6.3Vopen
R255
100K
C257
0.1uF
R254
10K
C240
100uF/10V
C244
100uF/10V
D34
RLZ8.2B
D38
1N5819
1 2
+

U22A
LM393D
3
2
1
8
4
D25
1N5819
1
2
C259
0.1uF
C233
0.1uF
Q23
3906
1
2 3
U21 NCP1117open
3
1
2
IN
G
N
D OUT
R222 0R
U24 AMS1117-ADJ
3
2
1
4
VIN
VOUT
A
D
J
VOUT
R227
560RF
R225 4.7K
C246
10uopen
C263 0.1uF
+ C256
100uF/6.3V
L252
6R8uH/CR54
R256
24K
Q60 3904
1
2 3
C230
47uF/6.3V
L209
20uH 1210IF200
+
C241
47uF/16V
Q20
3904
1
2
3
R257
1K
R223 4.7K
C222
0.1uF
+
C258
47uF/25V
+
C260
47uF/16V
R219
300RF
D26
RLZ13B
C261
0.1uF
U29
LF52ABPT
4
5
3
2
1
6
NC
VO
G
N
D
CE
VIN
G
N
D
R202
4K7-->22K
R205
4K7-->8K2
C249
10uF/25V
C239
0.1uF
R220 0R
R206
4K7-->1K
F21
CBWU600
U26
FN5331
1
2
3 4
5
SW
GND
FB SHDN
VIN
C245
10uopen
R211
3K9-->6K8
D24
1N5819
1 2
R203
47K
R229
1K
R228
4.7K
R212
47K
F24
CBWU600OPEN
C221
47uF/6.3V
R204
4K7
R207
4K7
F22
CBWU600
C224
100uF/6.3V
C217
0.1uF
C264
10uF/25
C262
0.1uF
L208
20uH 1210IF200