Technics SX-PX554 Service Manual page 48

www.freeservicemanuals.info 09/08/2012
+5D
C55
0.1
14 28
GND VCC
O A14 DE A
1 22
N A13
26
WE
M 2 A12 27 B
L 23 A11
K 21 A10 CE 20 C
J A9
24
I A8
25
H 3 A7 D7 19 H
G 4 A6 D6 18 G
F 5 A5 D5 17 F
E A4 D4 E
6 16
D A3 D
7 D3 15
C 8 A2 D2 13 C
B 9 A1 D1 12 B
A 10 A0 D0 11 A
IC11
LH5P832N-10
(256KBIT PSEUDO STATIC RAM)
+5D
C48
0.1
14 28
GND VCC
DE
O 1 A14 22 A
N 26 A13
M 2 A12 WE 27 B
L A11
23
K A10 CE
21 20 C
J 24 A9
I 25 A8
H 3 A7 D7 19 H
G A6 D6 G
4 18
F A5 F
5 D5 17
E 6 A4 D4 16 E
D 7 A3 D3 15 D
C 8 A2 D2 13 C
B A1 D1 B
9 12
A A0 D0 A
10 11
IC17
LH5P832N-10
(256KBIT PSEUDO STATIC RAM)
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+5D
C56 0.1
C57 0.1
23 33
VCC BYTE
20 CE
44 12
T 19
43
DE
14
S 2 18 R201
0
R 3 17
AD21
1
Q 34 16
P 15 15 P
35 31
O 14 14 O
36 29
N 37 13 13 27 N
M 38 12 12 25 M
L 39 11 11 22 L
K 10 AD 10 K
40 20
J 9 9 J
41 18
DT
I 42 8 8 16 I
H 4 7 7 30 H
G 5 6 6 28 G
F 5 5 F
6 26
E 4 4 E
7 24
D 8 3 3 21 D +5D
C 9 2 2 19 C
B 10 1 1 17 B
A 0 0 A
11 15
VSS VSS
13 32
IC12
QSIGX3C64002
(64MBIT MASK ROM)
+5D
C49 0.1
C50 0.1
23 33
VCC BYTE
20 CE
44 12
T 19
43
DE
14
S 2 18 R211
0
R 3 17
AD21
1
Q 34 16
P 15 15 P
35 31
O 14 14 O
36 29
N 37 13 13 27 N
M 38 12 12 25 M
L 39 11 11 22 L
K 10 AD 10 K
40 20
J 9 9 J
41 18
DT
I 42 8 8 16 I
H 4 7 7 30 H
G 5 6 6 28 G
F 5 5 F
6 26
E 4 4 E
7 24
D 8 3 3 21 D
C 9 2 2 19 C
B 10 1 1 17 B
A 0 0 A
11 15
VSS VSS
IC18
13 32
QSIGX3C64003
(64MBIT MASK ROM)
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IC14
TC7W08FTE12L
(DUAL 2-INPUT AND GATE)
GND VCC
1 2 3 4 5 6 7 8
C51
A
0.1
B
C
+5D
Q9
2SC1815TPE2
+3.3
R202
220
D32
MA1039HTR
IC20
TC7W08FTE12L
(DUAL 2-INPUT AND GATE)
GND VCC
1 2 3 4 5 6 7 8
C58
0.1
A
B
+5D
C
C92 0.001
E1
C95 0.001