8050D N/B Maintenance

8.5 Memory Test Error

Either on board or extend SDRAM is failure or system hangs up.

+1.25V_DDR

+3V

+2.5VS_DDR

197

 

 

NB_MD[0..63]

 

 

 

NB_DQS[0..7]

 

 

 

NB_DM[0..7]

 

P4

P5

NB_CB[0..7]

 

 

 

 

 

 

NB_MA0

NB_MA3

 

 

NB_MA[6..12]

 

 

 

NB_WE#

NB_CAS#

U714

NB_RAS#

NB_BA[0,1]

SMA [1,2]

SMAB[1,2]

 

 

 

 

SMA[4,5]

SMAB [4,5]

NB

 

CKE [0~3]

 

 

 

CS# [0,1]

 

855GM

NB_DM8

/GME

 

 

NB_DQS8

 

NB_CLK_DDR[0..5]

 

NB_CLK_DDR[0..5]#

P11

29

U712

30

CLOCK

GENERATOR

RP29~RP43

R340

75

56*8

 

R948,R949…

10

 

Document

Secret

R1011,R1016..

10

 

 

R950,R955..

10

 

 

R977,R978..

10

 

 

R972~R975

 

 

 

 

 

MiTac

 

R1032~R1036

10

 

 

R969~R971

10

 

 

R1030

 

R1031

 

 

ConfidentialSMBCLK

 

 

R979

10

 

 

 

 

R1040

10

 

 

R335~R338

R319

R359

 

 

 

R1103~R1106

R320

R360

10*12

 

 

 

 

 

 

 

 

SMBDATA

 

VDD3S

 

+3V

 

C337 C346

0.01U 0.1U

MD[0..63]

DQS[0..7]

DM[0..7]

MCB[0..7]

MA0MA3

MA[6..12]

WE# CAS#

RAS# BA[0,1]

NB_DM8

NB_DQS8

NB_CLK_DDR[0..5]

NB_CLK_DDR[0..5]#

193

195

P6

J711

&

J712

SODIMM-DDR

P13

R315

R318

 

R316

R317

2.2K

2.2K

Q21

10K

10K

U715

SMB_DATA

 

2N7002

 

 

 

 

 

 

 

 

 

Q22

 

 

 

 

 

0.6MM/200P

ICH4-M

SMB_CLK

 

 

2N7002

 

 

 

/H5.2

115