MiTAC 8050QMA Service Manual page 121

8.5 Memory Test Error-2
Extend DDRAM is failure or system hangs up.
S[A..B]_BS#[0..2], S[A..B]_CAS#, S[A..B]_RAS#, S[A..B]_WE#
S[A..B]_A[0..13], CKE#[0..3], CS#[0..3], ODT[0..3]
S[A..B]_DQS#[0..7], S[A..B]_DQS[0..7]
S[A..B]_DM[0..7], S[A..B]_DQ[0..63]
NB_CLK_DDR[0,1,3,4], NB_CLK_DDR[0,1,3,4]#
P P
4 7
U710
North Bridge
U7
P
9
Clock
Generator
915PM
ICS954226
GMCH
80 50QMA N/B Maintenance
80 50QMA N/B Maintenance
+0.9VS
+3VS
R692 R691
10K 10K
47
SMBDATA
46
SMBCLK
R243,R263....
56
SA_BS#[0..2], SA_CAS#, SA_RAS#, SA_WE#
SA_MA[0..13], CKE#[0..1], CS#[0..1], ODT[0..1]
SA_DQS#[0..7], SA_DQS[0..7]
SA_DM[0..7], SA_DQ[0..63]
NB_CLK_DDR[0,1], NB_CLK_DDR[0,1]#
SMBDATA
SMBCLK
+1.8V
+DDR2_VREF
R606
75
R242 C285 C604 C304
75 0.1µ 2.2µ 0.1µ
SMBCLK
SMBDATA
SB_BS#[0..2], SB_CAS#, SB_RAS#, SB_WE#
SB_MA[0..13], CKE#[2..3], CS#[2..3], ODT[2..3]
SB_DQS#[0..7], SB_DQS[0..7]
SB_DM[0..7], SB_DQ[0..63]
NB_CLK_DDR[3,4], NB_CLK_DDR[3,4]#
J713
P
8
C295
2.2µ
J714
P
8
120