Lexmark 7003-050 X340n, Service Manual

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2-26
Service Manual
7003-XXX
Modem service check
Network card service check
FRU Action
Modem
Controller card
Ensure the phone line is properly connected to the top RJ-11 jack of
the modem and phone jack on the wall.
Ensure the modem cable is properly connected to the J69 on the
modem card and J69 on the controller card. Check the connectors on
both cards for damage.
Check pin 1 on J69 for +5V. Check pins 3 and 4 for +3.3V. Pins 2, 9,
14, 18, 22, and 27 should be ground. If voltages are present, replace
the modem card.
If the voltages are not present, replace the controller card.
FRU Action
Network daughtercard
Controller card
Firmware
In the MFP Administration menu, ensure DHCP is activated if the
network uses DHCP.
In diagnostics, ensure the PRINTER MODEL is set to the correct
printer model.
If the USB jack is connected to a device, disconnect it. The USB and
network jacks cannot operate simultaneously.
Ensure the network cable is properly connected to the RJ-45 jack of
the network card. Are the LEDs on the jack illuminated?
Ensure that the network daughtercard is securely fastened to J44 on
the controller card.
Check the connectors on the network daughtercard and controller
card for damage.
Check pin 1 on the network daughtercard for 5V. Pin 4 is ground. If
voltages are present, replace the network daughtercard.
If the voltages are not present, replace the controller card.
Device does not receive an IP address when DHCP is used. Update
with EC1 network card firmware.
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