Read Sharp AL-1566 (serv.man15) Service Manual online
AL-1556/1566 CIRCUIT DIAGRAM 13 - 1
[13] CIRCUIT DIAGRAM
1. MCU PWB
MCU PWB (CPU section)
C24
0.1u
C4
12p
R1
1
10kJ
R5
0J
BR20
33J
1 2 3 4
8 7 6 5
R18
11kF
C25
47p
R20
10kF
BR21
33J
1 2 3 4
8 7 6 5
R19
3.3kJ
IC2
HD6412321VF25(H8S/2321)
P3
P34
P3
P32
P3
P3
PD
PD
PD
PD
P
PD
P
P
P
P
P
P
P
P
P
AVcc
103
Vref
104
P40/AN0
105
P41/AN1
106
P42/AN2
107
P43/AN3
108
P44/AN4
109
P45/AN5
110
P46/AN6/DA0
111
P47/AN7/DA1
112
AVss
113
Vss
114
P17/PO15/TIOCB2/TCLKD
115
P16/PO14/TIOCA2
116
P15/PO13/TIOCB1/TCLKC
117
P14/PO12/TIOCA1
118
P13/PO11/TIOCD0/TCLKB
119
P12/PO10/TIOCC0/TCLKA
120
P11/PO9/TIOCB0/DACK1
121
P10/PO8/TIOCA0/DACK0
122
MD0
123
MD1
124
MD2
125
PG0/CAS
126
PG1/CS3
127
PG2/CS2
128
PG3/CS1
1
PG4/CS0
2
Vss
3
NC
4
VCC
5
PC0/A0
6
PC1/A1
7
PC2/A2
8
PC3/A3
9
Vss
10
PC4/A4
11
PC5/A5
12
PC6/A6
13
PC7/A7
14
PB0/A8
15
PB1/A9
16
PB2/A10
17
PB3/A1
1
18
Vss
19
PB4/A12
20
PB5/A13
21
PB6/A14
22
PB7/A15
23
P
A
0/A16
24
P
A
1/A17
25
P
A
2/A18
26
P
A
3/A19
27
Vss
28
P
A
4/A20/IRQ4
29
P
A
5/A21/IRQ5
30
P
A
6/A22/IRQ6
31
P
A
7/A23/IRQ7
32
P67/
/
CS7
IRQ3
33
P66/
/
CS6
IRQ2
34
Vss
35
Vss
36
P65/IRQ1
37
P64/IRQ0
38
P53/ADTRG
102
P52/SCK2
101
Vss
100
Vss
99
P51/RxD2
98
P50/TxD2
97
PF0/BREQ
96
PF1/BACK
95
PF2/
/W
AIT/BREQO
LCAS
94
PF3/L
WR
93
PF4/HWR
92
PF5/RD
91
PF6/AS
90
VCC
89
PF7/0
88
Vss
87
EXT
AL
86
XT
AL
85
VCC
84
STBY
83
NMI
82
RES
81
WDT
OVF
80
P20/PO0/TIOCA3
79
P21/PO1/YICOB3
78
P22/PO2/TIOCC3
77
P23/PO3/TIOCD3
76
P24/PO4/TIOCA4
75
P25/PO5/TIOCB4
74
P26/PO6/TIOCA5
73
P27/PO7/TIOCB5
72
P63/TEND1
71
P62/DREQ1
70
P61/
/
TEND0
CS5
69
Vss
68
Vss
67
P60/
/
DREQ0
CS4
66
Vss
65
R4
*3
BR22
33J
1 2 3 4
8 7 6 5
C1
*6
R13
10kJ
R2
*2
BR23
33J
1 2 3 4
8 7 6 5
IC4
M51957BFP
NC
8
GND
4
VCC
7
NC
1
IN
2
NC
3
Cd 5
OUT
6
BR24
33J
1 2 3 4
8 7 6 5
R7
*4
C381 22pF
R1
OPEN
C382 OPEN
C383 OPEN
C384 OPEN
X1
HC-49U/S
19.6608MHz
R22
10kJ
R21
33J
C22
0.1u
R8
33J
BR110
33J
1
2
3
4
8
7
6
5
IC1
P2010/PLL701-01
Xin
1
Xout 2
FS0 3
Vss 4
SSon
5 MODOUT
6 SR0
7 VDD
8
R12
10kJ
C3
*5
R3
*1
R6
0J
R10
100J
R337
33J
C23
OPEN
C2
0.1u
R9
33J
C386
OPEN
A0
A5
A2
A4
A1
1
A19
A13
A3
A8
A10
A7
A12
A16
A14
A18
A1
A15
A17
A6
A9
CPUCLK(NC)
/TRANSST
SPFMT0
/SCANSP
SPFMT1
SPFMT2
/SCANST
SPFMT3
/STBY
ES_CMD
RD
/ESS_RDY
/ESC_RDY
HWR
/PRINTST
LWR
ESS_TS
RESETOUT1
NMI
/WDT
OVF
/CS0#
/CS1#
/CS2#
/CS3#
VCC3
VCC3
VCC3
VCC3
VCC3
VCC3
/PRINTST
/RESET0
/ASIC_RST
/ES_PAGE
MSU_ST1
SPFMT0
SPFMT2/MIRCNT
(SIN2)
SPFMT1
/TRANSST
(KEYIN)
PMCLK
RTH
SPFMT3
/SCANSP
PSL
/SCANST
(SIN3)
(SIN1)
ESS_TS
/ESC_RDY
ES_CMD
/HWR
/LWR
/ESS_RDY
/RD
SELIN3
SELIN2
SELIN1
/RESET1
/CS3
/CS2
/CS1
/CS0
Spreading Range :
+/- 1.25%
+/- 1.25%
R4(*3)
When IC1 is,
mounted
NOT mounted
OPEN
0J
R3(*1)
OPEN
680J
R7(*4)
22J
OPEN
R2(*2)
0J
OPEN
C3(*5)
C1(*6)
22pF
22pF
15pF
15pF
*R2,R3,C1, and C3 are tentative
(2-D2)
(2-E3)
(2-E3)
(2-E3)
(4-C3)
(4-C2)
(4-C3)
(4-C3)
(2-D1)
(5-B2)
(2-C4)
(8-A2)
(13-B2)
(4-D4)
(4-D4)
(4-C3)
(4-D4)
(5-E3)
(4-D4)
(8-A1)
Reset IC
(4-C2)
(8-A3)
(13-B2)
(2-C1)
(4-C2)
(3-A2)
(4-A2)
(2-C1)
(4-C2)
(3-A2)
(8-A3)
(8-A2)
(8-A2)
(9-B2)
A
A
B
B
C
C
4
3
2
1
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