Sharp FO-4650, Service Manual

Page: 23 / 80

FO-4650U
1 2 6
4
3
5
BD
E
F
G
I
H
C
A
BD
E
F
G
I
H
C
A
1 2 6 4 3 5
15 16 28 27 26 25 24 23 19 18
41 40 39 38 36 35 34 33 10 8
DRA9 DRA8 DRA7 DRA6 DRA5 DRA4
DRA[9:0]
PMAD15 PMAD14 PMAD13 PMAD12 PMAD11 PMAD10
PMAD9 PMAD8
20 17 14 31 30 13 29 11 12 32
9 7 5 4 3 2 1 6 21 42 37 22
PMAD7 PMAD6 PMAD5 PMAD4 PMAD3 PMAD2 PMAD1 PMAD0
C134
0.1
C133 0.1
C109 0.1
DRA3 DRA2 DRA1
/PMRAS0 /PMLCAS /PMUCAS /GAPMW /CDCMW
R116 10 R112 100 R113 100 R115 10
DRA0
14
1 2 7
3
+5V
/LDS
14
4 5 7
6
+5V
/UDS /PMCAS
16
2 3 5 6
11 10 14 13
1
15
8
/MAEN1
C168
0.1
4 7 9 12
R150
R151
N.M.
/PMLCAS
/PMUCAS
14 7
5 3
14 12 13
7
11
+5V
14
9
10
8
7
R404
100
56 7
14
SCCLK2
DG
PMAD[15:0]
+5V
DG
IC9
HY5118164/MSM5118165
16Mbit DRAM
NC NC A9 A8 A7 A6 A5 A4 A3 A2 A1 A0 /RAS /LCAS /UCAS /WE /OE NC NC NC
I/O15 I/O14 I/O13 I/O12 I/O11 I/O10
I/O9 I/O8 I/O7 I/O6 I/O5 I/O4 I/O3 I/O2 I/O1 I/O0
VCC VCC VCC
VSS VSS VSS
DG
C426
0.1
+5V
IC41B
TC7S00FU
NAND GATE
VCC
GND
DG
IC13D
74HC32
DG
+5V
C401
0.1
VCC
GND
IC35C
74VHC393
DUAL D-TYPE FLIP-FLOPS
DG
C167
0.1
IC13A
74HC32
DG
IC13B
74HC32
+5V
+5V
DG
DG
IC8
74HC157
QUAD2-TO-10ATASELECTORS
VCC 1A 1B 2A 2B 3A 3B 4A 4B A/B G GND
1Y 2Y 3Y 4Y
CK16M SCCLK1 /RESET2
1
4
2
IC41A
TC7S00FU
NAND GATE
TP
TP
DG
C400
IC13C
74HC32
DG
C427
IC14C
74VHC04
TP
IC35A
74VHC393
DUAL D-TYPE FLIP-FLOPS
IC35B
74VHC393
DUAL D-TYPE FLIP-FLOPS
2 1
3 4 5 6
CLR CK
QB QA QC QD
12 13
11 10
9 8
CLR CK
QB QA QC QD
N.M.
N.M.
(8-1B)
(8-2A)
(10-5H) (10-5H)
(8-2A) (9-4G)
(9-4D) (5-4H)
(1-4A)
(8-6E)
(9-4G) (8-2A) (9-4G) (9-4G)
(8-1B)
(10-4A) (10-4A)
Page memory block
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