128
8575
8575
A N/B Maintenance
A N/B Maintenance
D
S
G
D
S
G
D
S
G
PU6
FDD6676
PU4
FDD6676
PU5
FDD6672A
PD503
EC31QS04
D
S
G
D
S
G
PD505
EC10QS04
PC538
0.1µ
PU516
FDD6676
PU502
FDD6676
PC517
0.1µ
D
S
G
D
S
G
D
S
G
PL1
1.2UH
PR502
.005
PU1
FDD6676
PU2
FDD6676
PU3
FDD6672A
PD501
EC31QS04
D
S
G
D
S
G
PD504
EC10QS04
PC529
0.1µ
PU515
FDD6676
PU501
FDD6676
PC516
0.1µ
PU508
CPU_CORE
Generator
LTC3716
SW2
8.1 No Power – Select CPU Model
When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up.
DPRSLPVR
+5VA
PR32
0
PR590
0
PD6
BAS32L
PR602
1M
PQ519
2N7002
PQ520
2N7002
PR602
1M
PR29
26.7K
PQ518
2N7002
PR23
750K
PR22
26.7K
PR27
100K
VID1
MOBO/DT#
From U1 CPU
PR2
10
PD516
EC31QS04
PD515
EC31QS04
PR21
20K
PQ10
2N7002
DT/MOBO#
VID2
VID3
PQ6
2N7002
PQ8
2N7002
W/N#
PR35
1M
1
2
3
4
PR26
2M
PR34
2M
8
7
6
5
+5VA
X
X
SW6
DT/MOBO#
PR514
5.1
VIN
23
INTVCC
29
35
33
TG1
BOOST1
SW1
BG1
34
31
24
26
TG2
BOOST2
BG2
25
27
+VCC_CORE
PL502
120Z/100M
PL501
120Z/100M
Core_In
VMAIN
INTVCC_3
PC541
470P
4,15
16,10
PQ513
2N7002
JO35
PQ514
2N7002
JO36
JO34
DT/MOBO#
PQ9
2N7002
PR20
187K
11
VOS-
PR581
20K
JO511
PR511
2.2K
PR513
10K
INTVCC_3
P
26
PR572
0
PGOOD
36
PR518
43.2K
INTVCC_3
PC525
0.22µ
PC536
1000P
PR522
22K
PC534
1000P
PR519
18.2K
VID0_P
VID[1:4]
From U1 CPU
18-21
17
H_PWRGD
From page 7 in M/B circuit
1
8
RUN/SS
VSS_SENSE
From U14 SiS961
PQ7
2N7002
From U1 CPU
VCC_SENSE
ON
OFF
OFF
W/N#
ON
ON
OFF
DT/MOBO#
OFF
OFF
ON
MOBO/DT#
Willamette
Mobile
Northwood
PL2
1.2UH
PR504
.005
CPU Model Select table