Network Problems And Solutions - Samsung CLX-6250FX Service Manual

4.2.6 Network problems and solutions

For Troubleshooting, use below check points.
Check Point
LAN cable check
Network LED check
Print Network test page
Printer SET status check
Network Printer Configuration check
1. Address Conflict check
A. IP address Conflict : Same IP address in a network
• Unplug network cable and perform PING test
B. MAC address Conflict : Same MAC address in a physical network
• Default MAC address or same MAC address (PING and ARP –a)
2. IP get method check (Panel or SWS)
A.DHCP/BOOTP : IP can be changed after rebooting
B. Auto IP address : Xerox Model default on
3. Protocol Enable / Disable, Port Number (In SWS)
4. IP filtering On/Off
5. SNMP community name check (When SNMP no response)
Service Manual
Alignment & Troubleshooting
A. Connected or Not connected
B. Wrong cable (defected cable, crossover cable)
C. Connection connector (Link partner check)
A. Link LED check (Link LED On when connected)
B. Activity LED check (No packet Regularly blinking, packet random blinking
depend on Printer Model)
A. Printed correctly. If not, NIC is in lock up state or NIC cannot communicate
with the printer
B. Network address value check : IP address, Subnet Mask, Gateway, MAC
address
C. NIC F/W version (Correct or not)
1) V1.0x.xx : NPC3
2)V2.0x.xx : NPC3H
3)V3.0x.xx : PHY Board
4)V4.0x.xx : On Board
D. Protocol Enable / Disable
E. WLAN module / Status check if WLAN available.
A. Toner Empty, Paper Empty and so on : Hard Stop cases (Job cannot be
finished add paper or correct the abnormality to resume printing.)
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Action
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