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8355 N/B MAINTENANCE
8355 N/B MAINTENANCE
122
8.1 No Power
When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up.
ADINP
PD1
D_VMAIN
PL1
PL2
PL3
PF1
VCC_CORE
P32
P30P31
P30
PD3
+VMAIN_2951
F503
U508
H8_AVREF1
VDD5
P30
Q32
P26 P26
PU502
PU505
PU507
PU508
+2.5VS_P
+1.25VS_P +1.25VTT
JL522
P25P27
PU7
PU4
PU5
P27
+2.5VS_DIMM
VDD_MEM_IO
VDD_DAC2.5
P8
P8
VDD_PNLIO2.5
P8
JL515
JL516
JL517
P25
+5VS_P
+3VS_P
+5V
+1.5V_M9
+5VS
+3VS
JL518
JL519
JL520
JL521
P25
P25
P28
P28
PU19
PU15
PU17
PU16
PU18
VGA_1.2/1.0
+2.5VDDA_RUN
Battery
VDD5S
P26
Q31
P31
P26
U27
P3
U7
PU506
P29 P25
PL512
PL513
P22
VCC_RTC
P26
U519
L516
L512
L520
L549
PU6
Power In
PJ501
+5VS
Q517
Charge
Discharge
PL10
PU11
PQ12
PU9
PU10
PU504
PQ10,PQ11
L521
VDD_MCLK2.5
P8
PD5
L534
+AGP_5V
P21
L517
+5V_TP
L54
+2.5VDDA
U515
VA
P3
P20
R619
R627
+5V_HDD
P15
R136
R615
+5V_CD
P15
PGDN
R53
R57
R525
R612
+1.25VSREF_CLAW
P2
+1.25VSREF_MEM
P2
U504
+2.5V_M10
PQ2
PQ3
: Page 24 on circuit diagram.
: Through by part PU502.
Note:
P24
PU502
P29
+2.5V
P26
U526