Read Sharp LL-171ME (serv.man3) Service Manual online
LL-171ME
CIRCUIT DIAGRAM & PWB LAYOUT
7 – 10
RAMA11
CKEPU
RAMA6
RAMA5
RAMA13
RAMA12
RAMA2
RAMA9
RAMA0
RAMA4
RAMA3
RAMA7
RAMA1
RAMA10
RAMA8
RAMD7
RAMD12
RAMD1
RAMD13
RAMD3
RAMD6
RAMD5
RAMD14
RAMD9
RAMD8
RAMD11
RAMD4
RAMD15
RAMD0
RAMD10
RAMD2
VI33D
SW-V33
RAMD[15:0]
(9)
RAMA[13:0]
(9)
RASN
(9)
CASN
(9)
WEN
(9)
MCL
K
(9)
2Mx16 SDRAM
M= METAL 1%
ALL RESISTORS 1/10 WATT,5% UNLESS NOTED.
ALL CAPACITOR VALUES IN uF UNLESS NOTED.
ALL RESISTORS VALUES IN OHMS UNLESS NOTED.
ALL RESISTORS 25 VOLT IN .1uF UNLESS NOTED.
NOTE : NC MEANS "NOT CONNECTED ON PCB BOARD"
ALL CAPACITORS 50 VOLT & 105"C UNLESS NOTED.
C211
0.1u
L33
M80/2012
C215
0.1u
C217
0.1u
MT48LC4M16A2
U32
SDRAM_4MX16_TSOP54
A0
23
A1
24
A2
25
A3
26
A4
29
A5
30
A6
31
A7
32
A8
33
A9
34
A10
22
BA0
20
DQML
15
DQMH
39
RAS
18
CAS
17
WE
16
CS
19
CLK
38
CKE
37
VDD1
1
VDD2
3
VDD3
9
VDD4
14
VDD5
27
VDD6
43
D0
2
D1
4
D2
5
D3
7
D4
8
D5
10
D6
11
D7
13
D8
42
D9
44
D10
45
D11
47
D12
48
D13
50
D14
51
D15
53
BA1
21
VDD7
49
VSS1
6
VSS2
12
VSS3
28
VSS4
41
VSS5
46
VSS6
52
VSS7
54
NC1
40
A11
35
NC2
36
C214
0.1u
C210
0.1u
C216
0.1u
C213
0.1u
C209
22u/50V
C212
0.1u
R203
1K
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
A
B
C
D
876
5
4
3
21
1
2
3
4
5
6
7
8
D
C
B
A
10/15
SDRAM
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