Memory Test Error - Prestigio NOBILE 150 Technical & Service Manual

TECHNICAL SERVICE MANUAL

8.5 Memory Test Error

Extend DDRAM is failure or system hangs up.
Memory Test Error
1.If your system installed with expansion
SO-DIMM module then check them for
proper installation.
2.Make sure that your SO-DIMM sockets
are OK.
3.Then try another known good SO-DIMM
modules.
Test
OK?
No
If your system host bus clock running at
266MHZ then make sure that SO-DIMM
module meet require of PC 266.
Test
OK?
No
Yes
Replace the faulty
DDRAM module.
Yes
Replace the faulty
DDRAM module.
One of the following components or signals on the motherboard
may be defective ,Use an oscilloscope to check the signals or
replace the parts one at A time and test after each replacement.
Board-level
Troubleshooting
Parts:
RP1~RP13
RP13~RP29
R78
R130
Q521
Q522
J512
J509
Replace
U504
Motherboard
U12
U508
R743
R748
122
Prestigio Nobile 150
Signals:
+1.25V_DDR SMB_DATA
+2.5V_DDR SMB_CLK
CKE [0..3], HCLK_MCH
CS# [0..3] HCLK_MCH#
SMA [1,2,4,5] 66M_MCH
SMAB [1,2,4,5] CLK_DDR [0..5]
NB_MA [0,3,6..12] CLK_DDR [0..5]#
NB_MD [0..63]
NB_DQS [0..8],
NB_BA [0,1]
NB_CB [0..7],
NB_DM [0..8]
NB_RAS#
NB_CAS#
NB_WE#