111
Prestigio Cavaliere 141
Technical Service Manual
Symptom:
Either on board or extend DDR RAM is failure or system hangs up.
8.6 Memory Test Error
Replace
Motherboard
If your system host bus clock running at
133MHZ then make sure that DIMM
module meet require of PC 133.
Replace the
faulty DRAM
module.
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
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.
Yes
No
Test
OK?
Yes
No
Re-soldering
Parts:
U503
U516
U508
U510
J509
RP4
RP6
RP7
RP8
RP9
RP10
Signals:
Check
U7,U8,U9,U10
U511,U512,U513,U514
For any cold
solder?
Test
Ok?
Replace the faulty
DDR RAM module.
Yes
No
WE#
RAS#
CAS#
CS#0
CS#1
CS#2
CS#3
DQM[0:7]
DQS [0:7]
MD [0:63]
MA# [0:12]
BS0
BS1
CKE0
CKE1
CKE2
CKE3
SMBCLK
SMBDATA
Board-level
Troubleshooting
RP11
RP12
RP13
RP14
RP15
RP16
RP17
