Service manual

1
2
3
4
5
B
C
B – 16
Diagrams
B
USB/ROM/PCI/ISA PULL HIGH
REV. 2
FIG. B  15
USB/ROM/PCI/ISA
+5VS
+3VS+3VS
+3VS
+3V
+3VS
+3VS
+3VS
+3V
T USBP1+14
T USBP1-14
SA[0..18]14, 18 ,20
SD[0..7]14 ,18 ,20
BIOSCS# 14
PHOLD# 8,14
PHOLDA# 8,14
CLKRUN# 8,14,18,24
SE RI RQ 15, 18 ,24
TRDY#8, 14 , 24 , 25
PLOCK#8
INT A#15, 24
INT B#9,15
INT C#15,25
INT D#15
REQA# 15
REQB# 15
REQC# 15
GNT 0#8,24
GNT 1#8,25
GNT 2#8
GNT 3#8
F RAME#8, 14 , 24 , 25
SERR#8,14,24
IRDY #8, 14 , 24 , 25
ST OP#8, 14 , 24 , 25
DEVSEL#8, 14 , 24 , 25
PERR#24
REQ 0# 8,15,24
REQ 1# 8,15,25
REQ 2# 8,15
REQ 3# 8
IRQ 1115
IRQ 1215 ,20
IRQ 1415 ,17
IRQ 1515 ,17
IO CHRDY14,18
MEM16#14
REFRESH#14
ZWS#14
MEM W#14
MEMR#14
IO W#14 ,18 ,20
IOR#14, 18 ,20
DREQ015 ,18
DREQ115 ,18
DREQ215 ,18
DREQ315 ,18 DREQ7 15
DREQ6 15
DREQ5 15
IRQ9 15
IRQ 10 15
IRQ7 15
IRQ6 15IRQ315
IRQ515
IRQ415
IRQ115, 20
SD[0..15]14, 18 ,20
IOCS16# 14
BA Y ST S1# 15,17
O C0# 14
FLASHON#15
SBHE# 14
IO W# 14,18,20
PCS0# 14
SD0
SA1
ROM WRIT E#
SA15
SD1
MEMR#
SA14
SA13
SA17
SA2
SA4
SA5
SA9
SA0
SA3
SA6
SA16
SD7
SD6
SA7
SD5
SD2
SA12
SD4
SD3
SA8
SA10
SA11
SA1
SA15
SA14
SA13
SA17
SA2
SA4
SA5
SA9
SA0
SA3
SA6
SA16
SA7
SA12
SA8
SA10
SA11
SA18
SA[0..18]
SD0
SD1
SD7
SD6
SD5
SD2
SD4
SD3
SD[0..7]
BIOSCS#
ROM WRIT E#
SD6
SD3
SD2
SD7
SD10
SD12SD9
SD14SD11
SD8
SD13
SD15
IRQ 14
IRQ 15
IRQ 11
IRQ 12
IOCS16#
MEM W#
SD4
SD1
SD5
SD0
MEMR#
SD[0..15]
MEM W#
ROM WRIT E#
SA18
SD0
SD1
SD2
SD3
SD4
SD5
SD6
SD7
U28
MAX893L
1
2
3
4 5
6
7
8
IN
IN
ON
GND SET
OUT
OUT
FAULT
*AT 29LV020
U16
30
2
3
29
28
4
25
23
26
27
5
6
7
8
9
10
11
12
22
24
13
14
15
17
18
19
20
21
1
32
31
16
A17
A16
A15
A14
A13
A12
A11
A10
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
CE#
OE#
OD0
OD1
OD2
OD3
OD4
OD5
OD6
OD7
VPP
VCC
PGM
GND
R251
100K
R250
1K
R256
15K
R176
0
R175 10K
R34710K
A M 2 9L V 00 4/ T S S O P
U17
10
38
9
37
25
29
40
11
26
127
228
332
33
534
635
36
8
14
15
16
17
18
19
20
21
22
24
31
39
30
7
4
13
23
12
REST #
NC
WE #
NC
OD0
NC
A17
NC
OD1
A16OD2
A15OD3
A14OD4
OD5
A12OD6
A11OD7
A10
A8
A7
A6
A5
A4
A3
A2
A1
A0
CE#
OE#
VCC
GND
VCC
A9
A13
A18
GND
RY /BY#
RP52
8P4RX1K
8 1
7 2
6
5
3
4
RP55
8P 4RX10K
8 1
7 2
6
5
3
4
L59
HB -1H3216 -700T 05
1 2
U41
7SH32
2
1
4
3
5
C330
.1UF
C344
22P F
C358
47P F
C347
47P F
C336
.1UF
C333
33P F
C350
33P F
C218
.1UF
RP49
10P8RX10K
10
9
8
7
6
1
2
3
4
5
RP54
10P8RX10K
10
9
8
7
6
1
2
3
4
5
RP16
10P8RX10K
10
9
8
7
6
1
2
3
4
5
RP32
10P8RX10K
10
9
8
7
6
1
2
3
4
5
RP53
10P8RX10K
10
9
8
7
6
1
2
3
4
5
RP56
10P8RX4.7K
10
9
8
7
6
1
2
3
4
5
RP57
10P8RX4.7K
10
9
8
7
6
1
2
3
4
5
RP51
10P8RX4.7K
10
9
8
7
6
1
2
3
4
5
RP48
10P8RX10K
10
9
8
7
6
1
2
3
4
5
JUSB1
BERG/1 SLOT
5
1
6
2
3
4
7
5
V+
6
DAT A_L
DATA_H
GND
7
R174
*0
C331
10UF/16V
L66
HB -1H3216 -700T 05
12
L62
FCM1608C221
1 2
L64
FCM1608C221
1 2
R242
15K
J10
*CO N12
1
2
3
4
5
6
7
8
9
10
11
12
USB PORT
(-DATA)
(+DATA)
USB T RACE ROUT ING 6 MIL
PLCC
TSSOP
4M
2M
ROM
PCI Pullups
ISA Pullups