Service manual

8224 N/B Maintenance
8224 N/B Maintenance
125
8.6 Memory Test Error-1
Extend DDR2-DIMM is failure or system hangs up.
Memory Test Error
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.
Test
OK?
Correct it.
Yes
No
Parts:
U512
U13
J509
J510
R209~R241
R293~R311
R348
R735
R770
R769
R729
C381
C382
Signals:
1. If your system installed with expansion
DDR2-DIMM module then check
them for proper installation.
2. Make sure that your DDR2-DIMM
sockets are OK.
3. Then try another known good
DDR2-DIMM modules.
If your system host bus clock running at
400/533/667 MHz then make sure that DDR2-
DIMM module meet require of PC
3200/4200/5300.
Test
OK?
Yes
No
1.8VDDS
+0.9VDDM
+DDR2_VREF
SA_DQ [0..63]
SB_DQ [0..63]
SMBDATA
SMBCLK
CKE [0..3]
CS# [0..3]
SA_DQS# [0..7]
SA_DQS [0..7]
SB_DQS# [0..7]
SB_DQS [0..7]
SA_DM [0..7]
Board-level
Troubleshooting
Replace
Motherboard
Replace the faulty
DDR2 module.
SB_DM [0..7]
SA_BS [0..2]
SB_BS [0..2]
M_A_A [0..13]
M_B_A [0..13]
SA_WE#
SB_WE#
SA_CAS#
SB_CAS#
SA_RAS#
SB_RAS#
ODT [0..3]
NB_CLK_DDR [0..3]
NB_CLK_DDR [0..3]#
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