mitac 8355.pdf - tim.id.au
mitac 8355.pdf - tim.id.au
mitac 8355.pdf - tim.id.au
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8.6 Memory Test Error<br />
Memory Test Error<br />
1.If your system installed with expansion<br />
DIMM module then check them for proper<br />
installation.<br />
2.Make sure that your DIMM sockets are OK.<br />
3.Then try another known good DIMM<br />
modules.<br />
If your system host bus clock running at<br />
800MHZ then make sure that DIMM module<br />
meet require of PC-2100/2700/3200.<br />
8355 N/B MAINTENANCE<br />
Symptom:<br />
Either on board or extend DDR RAM is failure or system hangs up.<br />
Test<br />
OK?<br />
Test<br />
Ok?<br />
No<br />
No<br />
Yes<br />
Yes<br />
Replace the f<strong>au</strong>lty<br />
DDR module.<br />
Replace the f<strong>au</strong>lty<br />
DDR RAM module.<br />
Board-level<br />
Troubleshooting<br />
Replace<br />
Motherboard<br />
No<br />
Yes<br />
Re-soldering<br />
One of the following components or signals on the motherboard<br />
may be defective ,Use an oscilloscope to check the signals or<br />
replace the parts one at A <strong>tim</strong>e and test after each replacement.<br />
Parts:<br />
Signals:<br />
U503<br />
U20<br />
U9<br />
J6<br />
J7<br />
R538<br />
R88<br />
R86<br />
R536<br />
R535<br />
R537<br />
R284<br />
Check<br />
U503,U20<br />
J6,J7<br />
For any cold<br />
solder?<br />
RP503<br />
RP505<br />
RP507<br />
RP509<br />
RP511<br />
RP514<br />
RP518<br />
RP520<br />
RP522<br />
RP525<br />
RP526<br />
RP530<br />
DDR_CLK[0:1] CPUCLK+<br />
DDR_CLK[4:7] CPUCLK-<br />
DDR_CS[0:3]# SMBCLK_DDR<br />
CPU_CKEA SMBDATA_DDR<br />
CPU_CKEB<br />
CPU_MD[0:63]<br />
CPU_DQM[0:7]<br />
CPU_DQS[0:7]<br />
MEMADD_A[0:13]<br />
DDR_CASA#<br />
DDR_BAA[0:1]<br />
DDR_RASA#<br />
137
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