Service manual

116
8258I N/B Maintenance
8258I N/B Maintenance
8.3 Memory Test Error-1
Extend DDR2 SO-DIMM is test error or system hangs up.
Memory Test Error
Test
OK?
Correct it.
Yes
No
1. Check the extend SDRAM module is installed
properly. (J508, J509)
2. Confirm the SDRAM socket (J508, J509) is
ok.
If your system host bus clock running at
533/667 MHz then make sure that
SO-DIMM module meet require of
PC3200/PC4200/PC5400.
Test
OK?
Yes
No
Board-level
Troubleshooting
Replace
Motherboard
Replace the faulty
DDR2 SO-DIMM
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.
Parts:
U505
U506
J508
J509
PR2~8
PR502~507
R59
Signals:
+0.9VDDM
+DDR2_VREF
SA/B_MA[0..13]
CKE[0..3]
CS#[0..3]
ODT[0..3]
SA/B_BS[0..2]
SA/B_CAS#
SA/B_RAS#]
SMBDATA
SMBCLK
NB_CLK _DDR#[0..3]
NB_CLK _DDR[0..3]
SA/B_DQS[0..7]
SA/B_DM[0..7]
SA/B_DQ[0..63]
SA/B_WE#
SA/B_DQS[0..7
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