MiTAC 8355 service manual PJ502

8355 N/B MAINTENANCE

8.1 No Power:

When the power button is pressed, nothing happens ,power indicator does not light up.

PD5

+VMAIN_2951

PD3

BAV70LT1

BAV70LT1

P30

ADINP

D/VMAIN

PQ3

To P29

PD1

SI4835DY

PQ11

PQ10

PL1

3

8

PR5

PR6

PR9

SI4835DY

SI4835DY

7

PL2

2

6

4.7K

4.7K

100K

3 2 1

3 2 1

PR7

1

S

D

5

S

S

PJ501

PF1

PL3

G

.02

4

G

4

G

4

PR10

ADEN#

PR4

D

D

PC10 PC20

33K

PD4

To H8

8 7 6 5

8 7 6 5

PR3

226K

Power In

0.1U

0.1U

PQ2

PQ4

D

RLZ24D

470K

SI4835DY

BATT

8

2N7002

G

3

3

VDD5

S

From P29

7

2

6

2

PU501

1

5

PQ5

S G

D

PC1

PR546

BAT_T

PR30

PR29

MAX4173

PR1

DTC144WK

I_LIMIT

PR501

3

4

1000P

4.99

To H8

PC65

PC64

.04

.04

VCC

100K

1

VDD5

To H8

10

6

RS+

4

PJ502

PR547

PC553

0.01P

1000P

D

OUT

PC501

RS-

5

S

G

5

PR565

0

20K

0.1U

PQ1

3

PR566

0

BAT_C To H8

PL9

2

1U

LEARNING

2N7002

PR2

4

PR65

0

3

6

To H8

BAT_D To H8

1M

1

PL8

5

PU504

8

Battery In

PF502

PL7

PR534

MAX4377

BAT_V

+VMAIN_2951

TR/SFT-10A

PC551

301K

To H8

1

7

0.1U

PC63

F503

H8_AVREF1

VDD5

FUSE_1206

Q517

0.01U

PR533

PC543

PR538 PR539

6

Q32

8

SI2301DS

SI2301DS

VDD5S

D_VMAIN

100K

0.1U

10

10

2

U508

I_DISCHG

7

1

+5VS

From H8

LP2951-02BM

R220

VDD5_SW#

PR41

PC79

PR43

PR42

I_CHG

D24

C322

C314

100K

To H8

4.7K

1U

787K

100K

PC567

PC29

From H8

RLZ5.6B

D22

10U

4.7U

1.25V

8

5

1U

1U

UDZ5.6B

PU10B

7

BATT_DEAD

3

6

LMV393M

VDD5_SW

From H8

2

Q513

PQ15

PC76

PR44

From H8

4

P26

DTC144WK

0.1U

100K

SCK431

P31

1

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