Read Sharp DX-SX1 (serv.man2) Service Manual online
DX-SX1H
– 14 –
Figure 14 BLOCK DIAGRAM (3/6)
DISPLAY
MMUTE
FL801
20MHz
20MHz
39
EXPC1
34
43
31
EXPC4
EXPBL3
EXPBU0
EXPPAU0
EXPBL1
EXPPAL3
EXPBL2
EXPBL0
30
29
22
21
IC801
SYSTEM
MICROCOMPUTER
IX1478GE
7
IC802
IX1535GE
INPUT/OUTPUT
EXPANDER
DVD_L
GAIN0
GAIN1
GAIN2
SEEK
RST0_1
D15 8
A1,A0
WR
RD
RFLT
SBSY
BUS3
BUCK
SBCS
EMPH
BUS0
TE
FE
RFRP
SRV_AD
4
IC803
RESET
PST9129N
EMPH
CDDAT
CDFRM
CDERR
CDCLK
CLK1 33MHz
D_GND
TO MAIN
TO MAIN
ZFLGL
BCKA
5
CNP905
8
DSAL
ZFLGR
D_GND
DSAR
D_GND
CNP906
1
10
9
SA/CD
AMUTE
EMPH
MCKI
D_GND
256FS
CDFRM
CDCLK
CDDAT
/RP
12
26
28
/CE
/OE
IC805
IX1539GE
FLASH ROM (4M)
8 , 16 24 , 25 , 28
A18
~
A0
11
29 36 , 38 45
WR
D0
~
D16
IC804
1Mbit SRAM
IX2839AF
13 15 , 17 21
I/O1
~ I/O3
I/O4
~ I/O8
A16
~
A0
12 , 23 , 25
CE1
29
24
22
R/W
OE
53
BUFD0
EXPPAU2
61
26
55
BUFC0
SBUFB0
24
HADR
47
46
44
38
45
EXPD0
EXPC0
EXPD2
EXPC5
EXPD1
HDATA7
6
5
HRD
8 15
HWR
HCS
EXPPAU3
BUFD1
27
58
56
SBUFAI
SBUFAO
SBUFB1
59
54
57
CHOP
LD_RVS
OFTRK
LD_SW
EJ_SW
IN_SW
LD_FWD
DFCT
48
39
34
D0
~
D3
D4
~D11
D12~D15
16
7
2
A0
~A3
A4~A11
A12~A23
117
31
MSDATO
91
SMUTE
ECCINT
ECC_CS
XMSREDY
66
89
90
XMSLA
MSCK
MSDATI
KEY1
32
26
S/E_CS
R/C
S/E_DA
JOG1
JOG2
95
87
57
KEY2
S/E_CK
67
86
96
66
63
68
29
69
70
71
IN_SW
EJ_SW
LD_SW
DFCT
LD_RVS
LD_FWD
CHOP
OFTRK
105
120
65
HWR
RD
AV_INT
30
EXP_CS
FROM_CS
SRAM_CS
60
118
83
84
73
RST
112
108
106
EMPH
64
SBCS
BUCK
BUS3
107
109
28
RFLT
SRV_AD
RFRP
FE
TE
UART_CTL
UART_RXD
102
101
100
99
58
56
78
77
EXTAL
XTAL
5
~
~
~
~
~
14
23
~
~
~
~
~
~
~
~
37
46
51
RESET
BUS0
~
~
88
SBSY
~
~
~
~
2
, 26, 27 , 28
1
28
MRST
~
~
~
7 6
4 3 2 1
4
1 2 3
5 6 7 8
92
HDAT0
A10 A11,A9,A8,A13
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