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Prestigio Cavaliere 141
8.12 LAN Test Error
Symptom:
An error occurs when a LAN device is installed.
LAN Test Error
1.Check if the driver is installed properly
2.Check if the notebook connect with the
LAN properly
Test
OK?
No
Check if BIOS setup is ok.
Re-test
OK?
NO
Yes
Correct it.
Yes
Correct it.
Check the following parts for cold solder or one of the following
parts on the mother-board may be defective, use an oscilloscope
to check the following signal or replace the parts one at a time and
Board-level
test after each replacement.
Troubleshooting
Parts:
U516
U509
U507
C638
C739
C149
C157
RP29
RP508
RP506
Replace
RP505
Motherboard
R170
R128
R189
R176
R127
R126
R606
124
Technical Service Manual
Signals
J508
LAN_MRXD0
R588
LAN_MRXD1
R740
LAN_MRXD2
R573
LAN_MRXD3
R586
LAN_MRXDV
R574
LAN_MRXER
R584
LAN_MRXC
R106
LAN_MTXD0
R102
LAN_MTXD1
R109
LAN_MTXD2
R105
R111
LAN_MTXD3
R103
LAN_MTXE
R113
LAN_MTXC
R115
LAN_DCLK
R108
R110
LAN_TXP
LAN_TXN
LAN_RXP
LAN_RXN
PJTX+
PJTX-
PJRX+
PJRX-
PJ5
PJ4
PJ7
PJ8
LAN_COL
LAN_CRS
LAN_DATAIO
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