Schematic Diagram - Digital Board (4/5) - Sony STR-K990 Service Manual

STR-K990
Q Q
4-8. SCHEMATIC DIAGRAM – DIGITAL BOARD (4/5) –
3 7 6 3 1 5 1 5 0
1 2
A
B
DIGITAL BOARD
C
6
2
DIGITAL
BOARD
(1/5)
T E
L 1 3 9 4 2 2 9 6 5 1 3
(Page 19)
D
56
E
59
11
58
DIGITAL
60
BOARD
(2/5)
(Page 20)
F
w w w
STR-K990
3 4
MAIN BOARD STANDBY
(4/4) BOARD
CNP913 CNP903
D
(Page 28) (Page 32)
CNP503
8P
(4/5)
CL025
D1107~1111
MA111-TX
+R4
+2.65V/+1.85V
88 91 90 94 a1 89 92 95 93
x a o
. i
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5 6 7
MAIN BOARD
(4/4)
CNP912
C B
(Page 28)
CNP505
7P
IC1904
IC1904
BA33BC0FP-E2
D1001
1SR154-400TE-25
7.9 3.3
1 VCC OUT 3
GND
2
C1022
C1021
0.47 470
10V
IC1031
IC1031
BA50BC0FP-E2
+5V REG
8.5 5
1 OUT 3
VCC
GND
2
C1032
C1031
470
0.47
10V
Q Q
3 7
W1000 IC1903
+3.3V REG
IC1903
SI-3004KWF
1 2 3 4 5
C1908
C1905
470
0.1
10V
C1906
470
10V
a3 96 b7
DIGITAL BOARD
14
(5/5)
(Page 23)
u 1 6 3
y
22 22
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2 4
8 9 9
8 9
+3.3V REG
FB1308 0uH
R1179 10k
VOL_A
R1180 10k
VOL_B
R1088 10k
6 3 1 5 1 5 0 8 SIRCS 9
AD2
AD1
R1184 10k
R1183 10k
R1181 10k
R1182 10k
a5 a4 a6 97 99 98 a9 b1 b2 b3 a2 a7 a8 b5 b4
m
c o
.
2
8 9 9
10 11
17 NC (DC CONTROL)
CL033
16 GND
15 GND
CL028
14 +3.3V(STDBY)
CL029
13 +5V
12 VOL_JOG_2A
11 VOL_JOG_2B
H
10 PW_SW
2 4 9 8 2 9 9
9 SIRCS
DISPLAY
8 AD2
BOARD
CNS100
7 AD1
CL030
(Page 30)
6 FL_LAT
CL031
FL_DIN
5
CL032
4 FL_CLK
3 INPUT_JOG_4A
2 INPUT-JOG_4B
1 DCAC_IN
CNS513
17P
No mark:FM
b6 b8