Service manual

8 7 6 5 4
3
2 1
A B
C D
12345678
D C
B A
2) LAN CONTROLLER
(R104)
1k
(R105)
1k
(R106)
1k
VCC
R91 10k
(R92) (R93) (R94) (R95)
(R96)
(R103)
0
(D1) LED
(D2) LED (D3) LED
VCC
(R97) (R98) (R99)
(R100) (R101)
(R102)
(R83) (R82)
(R85) (R84)
BD3(IOS0)
81
X1
50
B
D
4
(
I
R
Q
S
2
)
8
0
B
D
5
(
I
R
Q
S
1
) (
E E S K
)
7
9
I
N
T
3
(
I
R
Q
5
)
1
I
N
T
2
(
I
R
Q
4
)
2
I
N
T
1
(
I
R
Q
3
)
3
I
N
T
0
(
I
R
Q
2
/
9
)
4
S A 0
5
V D D
6
S A 1
7
S A 2
8
S A 3
9
S A 4
1 0
S A 5
1 1
S A 6
1 2
S A 7
1 3
G N D
1 4
S A 8
1 5
S A 9
1 6
V D D
1 7
S A 1 0
1 8
S A 1 1
1 9
S A 1 2
2 0
S A 1 3
2 1
S A 1 4
2 2
S A 1 5
2 3
S A 1 6
2 4
S A 1 7
2 5
S A 1 8
2 6
S A 1 9
2 7
G N D
2 8
I
O
R
B
2 9
I
O
W
B
3 0
SMEMRB
31
SMEMWB
32
RSTDRV
33
AEN
34
IOCHRDY
35
SD0
36
SD1
37
SD2
38
SD3
39
SD4
40
SD5
41
SD6
42
SD7
43
GND
44
TPOUT+
45
TPOUT-
46
VDD
47
TX-
48
TX+
49
X 2
5
1
G N
D
5
2
C D
-
5
3
C D
+
5
4
R
X
-
5
5
R
X
+
5
6
V D
D
5
7
T
P
I
N
-
5
8
T
P
I
N
+
5
9
L
E
D
B
N C
6
0
L
E
D
0
(
L
E
D C
O
L
) (
L
E
D
L
I
N
K
)
6
1
L
E
D
1
(
L
E
D R
X
) (
L
E
D C R
S
)
6
2
L
E
D
2
(
L
E
D
T
X
)
6
3
A
U
I
6
4
J P
6
5
B A
2 1
(
P
N
P
)
6
6
B A
2 0
(
B S
0
)
6
7
B A
1 9
(
B S
1
)
6
8
B A
1 8
(
B S
2
)
6
9
V
D D
7
0
B A
1 7
(
B S
3
)
7
1
B A
1 6
(
B S
4
)
7
2
B A
1 5
7
3
B A
1 4
(
P
L 0
)
7
4
B
C
S B
7
5
E E
C
S
7
6
B
D
7
(
P
L 1
) (
E E
D
O
)
7
7
B
D
6
(
I
R
Q
S
0
) (
E E
D
I
)
7
8
BD2(IOS1)
82
GND
83
BD1(IOS2)
84
BD0(IOS3)
85
GND
86
SD15
87
SD14
88
VDD
89
SD13
90
SD12
91
SD11
92
SD10
93
SD9
94
SD8
95
IOCS16B(SLOT16)
96
INT7(IRQ15)
97
INT6(IRQ12)
98
INT5(IRQ11)
99
INT4(IRQ10)
100
IC6
RTL8019AS
R89 270
R90 270
X2 20MHz MA406
R147
1M
2 1
C55
18pF
2 1
C54
18pF
T1
78Z034C
R115
200
VCC
TPOUT+ TPOUT-
TPIN+ TPIN-
1 2 3 4 5
CN3
53261-0590
RX- RX+ TX- TX+
2 1
C58
0.01uF
2 1
C59
0.01uF
2 1
C56
0.01uF
2 1
C57 0.01uF
/CSLAN
VCC
R142
10k
2 1
C88
100pF
LD0 LD1 LD2 LD3 LD4 LD5 LD6 LD7
L A 0
L A 1
L A 2
L A 3
L A 4
L A 5
L A 6
L A 7
L A 8
L A 9
L A 1 0
L A 1 1
L A 1 2
L A 1 3
L A 1 4
L A 1 5
L A 1 6
L A 1 7
L A 1 8
L A 1 9
LA[0:19]
RSTDRV
R86
10k
R87
10k
LA[0:19]
RSTDRV
IOCHRDY
/MRD /MWE
R88
10k
IOCHRDY
LAN CONT
(R124) (R123)
R122
LD8 LD9 LD10 LD11 LD12 LD13 LD14 LD15
VCC
VCC
1 8 2 7 3 6 4 5
BR15
10K*4
1 8 2 7 3 6 4 5
BR16 10K*4
2
1
C52 0.1uF
C53
10uF
INT0
(R128) (R126) (R127) (R125)
R81 27k
LD[0:15]
LD[0:15]
2/4