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7321 N/B Maintenance
7321 N/B Maintenance
Replace the faulty
DRAM module.
Make sure the system host bus clock is
same with DIMM module meet require of
clock
1.If your system installed with expansion
DIMM module then check them for proper
installation.
2.Make sure that your DIMM sockets are OK.
3.Then try another known good DIMM
modules.
Memory Test Error
Board-level
Troubleshooting
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.
Replace
Motherboard
Test
OK?
Replace the faulty
DRAM module.
Yes
No
Parts:
Signals:
Test
Ok?
Yes
No
MDR[0:63]
MAB#[0:13]
DQMA#[0:7]
SCASA#
SRASA#
WEA#
MECCR[0:7]
CSA#0
CSA#1
CSA#2
CSA#3
CSA#4
CSA#5
CKE#0
CKE#1
CKE#2
CKE#3
CKE#4
CKE#5
U8
U21
U15
U25
U22 U28
U16 U26
U23 U29
RP28 RP33
J7
SMBCLK
SMBDATA
Symptom:
PIO debug board shows the port 378H error code is stopped at 27H,28H or 29H, or error message of memory failure
is shown.
8.6 Memory Test Error
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