Service manual

109
8258I N/B Maintenance
8258I N/B Maintenance
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When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up.
8.1 No Power-3
: Page 33 on M/B Board circuit diagram.
NOTE :
P33
DVMAIN
P27
PL514
PL508
PU506, PQ516
PQ517, PL512
+1.05V_P
P23
PQ519, PL513
+1.5VS_A
P23
+1.5VS
P20
PJO508
PJO509
+VCCP
P20
PJO503~505
PF503, PL504, PL505, PQ504~PQ506
PQ508~PQ512, PL503
+CPU_CORE
P25
+KBC_CPUCORE
P18
+0.9VDDM_P
P22
+0.9VDDM
P20
PJO513
PJO514
PQ520, PU507
VTTR
P22
PU508
R619
+VCCA
P4
+1.5VS_DPLLA
P7
+1.5VS_DPLLB
P7
+1.5VS_HPLL
P7
+1.5VS_MPLL
P7
+1.5VS_TVDAC
P7
+1.5VS_3GPLL
P7
+1.5VS_PCIE
P7
+1.5VS_A
P20
R527
EL13
EL10
EL526
EL521
EL520
EL17
EL525
PJO508
PJO509
CARD_+1.5VS
P14
U512
R613
PQ520, PU507
PU508, PL515
+1.8VS_DDR_P
P22
1.8VDDS
PJO510~512
P20
+DDR2_VREF
P8
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