Service manual

PC-UM10M
XE-A41S CIRCUIT DIAGRAM AND PWB LAYOUT
–
16 –
A B
C
D
8
7
6
5
4
3
21
12345678
D C
B A
A B
C
D
8
7
6
5
4
3
21
12345678
D C
B A
A B
C
D
8
7
6
5
4
3
21
12345678
D C
B A
A B
C
D
8
7
6
5
4
3
21
12345678
D C
B A
2/5
MEMORY & KIF
A16 A12 A14
A5 A2 A1 D0 A0 D2
D1
D3 D4
D5
RAMCS# D7 D6
A11 A10 A9
A8 WR#
A13
A15
A7
A19
CS0#
A6
A[0..19]
KBR2
dp
c
e
KBR1
b
KS2
KS0
KBR0
g
a
KS3
KBR4
KS1
KBR6
f
d
KBR3
KBR5
RESET#
VON#
D3
D1
D4 D7 e
D5
g
f
D6
dp
RESET#
A0
CS3#
WR#
ROMA18
CNVSS
A18
A3
a
d c b
D0 D2
A1
D5
A5 A3
A19
A4
A17
D6
ROMCS#
A18
D[0..7]
A9
D0
A0 A11
D4
A7 A8
CS0#
D3
D1
A17 A16
A15
D7
A6
A12
A10
D2
A14 A2 A19
A13
KR6 KR7
KBR[0..7]
KBR0
KBR3
KBR2
KR3
KBR1
KR1
KR[0..7]
KR0
KR4
KBR5
KBR7
KR5
KBR4
KBR6
KR2
KBR11
KBR10
KBR8
KBR9 KBR7
RAMA18
CS2#
CS2#
RAMA18
A4
RD#
D4
WR# ROMA18
A0
A15
D3
A10
A16
A1
A7
D2
D7
A6
A11
A14
A2
D1
A9
A5
D6
A12
A8 A4
A3
D5
A13
D0
RD#
A17
FRDY
VDD VDD
VDD
VDD
VCC
VDD
VLED
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VCC
VDD
VDD
VCC
VDD
VCC
VDD
VCC
VDD
VDD
VDD
VCC
VDD
VCC
VCC
VCC
D[0..7]
A[0..19]
CS0#
VON#
MODR
RESET#
RJR
POFF#
KBR8
KBR9
KBR10 KBR11
KS3 KS2
KS1
KS0
CS3#
WR#
CS2#
ROMBANK
CNVSS
CS0#
KR[0..7]
RAMBANK
WR# RD#
FRDY
C8
100pF
IC6
74HCT273
74HCT273
MR#
1
Q0
2
D0
3
D1
4
Q1
5
Q2
6
D2
7
Q3
9
GND
10
D3
8
VCC
20
Q7
19
D7
18
D6
17
Q5
15
Q6
16
D5
14
D4
13
Q4
12
CP
11
IC4
SRAM 4M CY62148ELL-45ZSXI TSOPII
IC4 A17
1
A16
2
A14
3
A12
4
A7
5
A6
6
A5
7
A4
8
A3
9
A2
10
A1
11
A0
12
I/O0
13
I/O1
14
I/O2
15
GND
16
VCC
32
A15
31
A18
30
/WE
29
A13
28
A8
27
A9
26
A11
25
/OE
24
A10
23
/CE
22
I/O7
21
I/O6
20
I/O5
19
I/O4
18
I/O3
17
R103
0
0
C97
0.1uF
C97
0.1uF
R106 00
C23
0.1uF
C23
0.1uF
IC24E
74LV04A
11
10
147
R13
10K
R124
0
0
R14
10K
IC25C
SN74LV32A
9
10
8
14
7
C19 0.1uF
R102
0
0
R125
0
0
D3
1SS355
1
2
R116
10K
IC23B
SN74LV08A
4
5
6
147
R11 10K
R73 0R73 0
R105 00
IC24C
74LV04A
74LV04A
56
147
C26
0.1uF
C26
0.1uF
+
C9
10uF/50V
+
1
2
D4
1SS355
1 2
IC25B
SN74LV32A
SN74LV32A
4
5
6
14
7
IC25A
SN74LV32A
1 2
3
14
7
IC23C
SN74LV08A
9
10
8
14
7
R72 0R72 0
R109 00
R115
10K
C25 0.1uF C25 0.1uF
+
C17
10uF/50V
+
C17
10uF/50V
12
R104
0
0
R97
0
R97
0
R98
0
R98
0
IC23D
SN74LV08A
12 13
11
147
IC26B
SN74LV32A
4
5
6
14
7
IC5
FROM SPANSION MBM29F400TC/400BC-70 M19
A15
1
A14
2
A13
3
A12
4
A11
5
A10
6
A9
7
A8
8
NC
9
NC
10
/WE
11
/RESET
12
NC
13
NC
14
RY/BY
15
NC
16
A17
17
A7
18
A6
19
A5
20
DQ9
32
DQ1
31
DQ8
30
DQ0
29
A4
21
A3
22
A2
23
A1
24
A0
25
/CE
26
VSS
27
/OE
28
DQ2
33
DQ10
34
DQ3
35
DQ11
36
VCC
37
DQ4
38
DQ12
39
DQ5
40
DQ13
41
DQ6
42
DQ14
43
DQ7
44
DQ15/A-1
45
VSS
46
/BYTE
47
A16
48
R117
10K
R12
10K
IC23A
SN74LV08A
IC23A
1 2
3
14
7
R114
10K
C22
0.1uF
C22
0.1uF
IC26A
SN74LV32A
1 2
3
14
7
IC24F
74LV04A
13
12
14
7
R59
0
R59
0
C24
0.1uF
CN2
1.25-2-34P
CN2
1
2 3 4 5
6
7
8
9 10 11
12
13
14
15 16
17
18
19
20 21
22
23
24
25
26
27
28 29 30 31
32
33 34
IC24A
74LV04A
1
2
14
7
IC24B
74LV04A
3 4
147
R21 10K
R58
0
R58
0
C21 0.1uF C21 0.1uF
IC25D
SN74LV32A
IC25D
SN74LV32A
12 13
11
147
IC24D
74LV04A
98
14
7
R108
0
0
R107
0
0
NOT MOUNT
NOT MOUNT
FOR POP UP & KEY I/F
NOT MOUNT
NOT MOUNT