Sharp XG-MB67X, Service Manual

Page: 39 / 128

XG-MB67X
8 – 11
Checking the LAN
LAN communication is disabled even
though connecting the control PC with a
LAN cable. The LINK LED (green) does not
light up.
YES
Are the connection of connecting cable and
the settings of IP address, sub-net address
and default gateway correct? NO Check the connecting cable and LAN settings. If the LAN
settings are unknown, contact the network administrator.
If the network settings cannot be saved, replace IC8003
(EEP ROM) as it may be defective.
YES
Note: When IC8003 (EEP ROM) is replaced, the MAC
address returns to default. Refer to "Resetting after replac-
ing IC8003 (EEP ROM)" to reset.
Are the network device (e.g. Hub) between
the control PC and XG-MB67X and cable
normal? NO Repair defective parts in the network.
YES
When data is sent from the control PC, do
pins (30) and (31) of IC8201 (PHY receiver)
receive signals? NO Check the peripheral circuit of J8201 (RJ-45 jack with built-
in transformer).
YES
Check the PHY receiver IC8201 and the
peripheral circuits of the microprocessor
IC8001.