Service manual

108
8258I N/B Maintenance
8258I N/B Maintenance
+2.5V
+VDD3
P21
F502
U511, Q515
R45
EL528
U509
EL534
EL529
When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up.
Main Voltage Map
8.1 No Power-2
: Page 33 on M/B Board circuit diagram.
NOTE :
P33
AKPJ502 PJ502
Discharge
AKPD502
BATT
PQ709
Charge
Discharge
PD5
P26
DVMAIN
P27
POWER IN
AKPJ501
P29
+FPWR_VDDIN
P20
PF502, PL502
PQ503, PL501
PD501, PD3
PD4
FADPIN
ADPIN
P27
Daughter Board
AKPF501
AKPL501
AKPL502
AKPR502
AKPQ501
+PWR_VDDIN
P27
VCC
P24
PU505
EL21
PU505
P24
+VDD5_A
+VDD5
P21
+VDD5S
P21
Q517
EL539
PL507, PU504
PL511, PU505
+3V_P
P24
+3V
P20
PJO506
PJO507
EL43,EL44
+3VS
P21
+3VS-TVDACA
P7
EL12
+3VS-TVDACB
P7
EL518
P7
+3VS-TVDACC
EL515
+3VS-REF
P9
P9
+3VS-PCI
+3VS-USB
P9
R54
P9
+3VS-PCIE
EL527
+3VS-VDDA
P9
R42
P20
+3V
P24
EL535
+VDD3_A
PU505
+VDD3_AVREF
P21
+VDD3S
P24
Q516, EL538
+KBC_VDD
P18
EL536
+VDD3_RTC
P11
D2
Q4
PL510, PU503
PL509, PU505
+5V_P
P24
+5V
P20
+5VS
P21
Q510
P21
PJO501
PJO502
U507, EL522
EL523
P21
2.5VDDM
U2
+5VS_HDD
P14
+5VS_CDROM
P14
AMPVDD
P17
EL537
EL18
EL29
+VA
P16
EL30
EL34
AVDD
P16
DVDD
P15
EL549
+3V_LAN
P21
AVDDL
P15
EL540
U512
CARD_+3.3V
P14
P14
CARD_+3.3VS
U512
ELL543
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