MiTAC 8355 service manual No Power, +1.25VSREFMEM

8355 N/B MAINTENANCE

8.1 No Power

When the power button is pressed, nothing happens, no fan activity is heard and power indicator is not light up.

Note:

PU506

P29

PL512

P25

PL513

+1.5V_M9

VGA_1.2/1.0

P24

: Page 24 on circuit diagram.

PU16

P28

JL520

P25

P26

P3

PU19

PU18

JL521

U27

U7

+5VS_P

+5V

+2.5VDDA_RUN

PU502 : Through by part PU502.

+5VS

L534

P21

U515

P20

L54

P3

+AGP_5V

VA

R619

+2.5VDDA

L517

P22

P15

R627

+5V_TP

+5V_HDD

PU15

JL518

P28

P25

R136

PU17

JL519

R615

P15

+3VS_P

+3VS

PGDN

+5V_CD

PU502

R53

P2

R57

PL1

PQ2

PU505

+1.25VSREF_CLAW

P30

P31

P30

PU507

P32

Power In

PL2

PQ3

PD1

PU508

R525

ADINP

D_VMAIN

VCC_CORE

P2

PJ501

PL3

R612

PL10

+1.25VSREF_MEM

PF1

PU11

PU6

P27

JL522

P25

PQ12

+1.25VS_P

+1.25VTT

P26

PU9

U504

+2.5V

PU10

Charge

PU504

JL515

PU4

P27

JL516

PQ10,PQ11

PU7

P25

P29

P8

Battery

PU5

JL517

U526

L516

+2.5VS_P

+2.5VS_DIMM

+2.5V_M10

Discharge

VDD_DAC2.5

P31

L512

P8

PD3

VDD_PNLIO2.5

Q517

Q31

P26

+5VS

VDD5S

L521

P8

VDD_MCLK2.5

F503

P30

P26

Q32

P26

P26

L520

PD5

U508

U519

P8

+VMAIN_2951

H8_AVREF1

VDD5

VCC_RTC

L549

VDD_MEM_IO

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