Sharp PG-M25X Software Manual page 56

• If the value of the received IP address is 169.254.XXX.XXX
The reception of the IP address from the DHCP server has failed.
When the DHCP server function fails to receive an address, the address
169.254.XXX.XXX is automatically allocated.
(The XXX.XXX part of the IP address is randomly selected).
1 The projector (on the DHCP server) is not active before Windows restarts.
2 Check that the Wireless LAN settings and the driver are properly set.
3 Check that the projector's DHCP server function is properly set.
If the above is in order, restart the computer.
• Using the "PING" command, you can check if the "TCP/IP" is operating
correctly. You can also check if the IP address is set.
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Open Command Prompt (MS-DOS Prompt).
Windows 98/98SE: Start →Programs → MS-DOS Prompt
Windows Me: Start→Programs →Accessories→MS-DOS Prompt
Windows 2000: Start→Programs →Accessories→Command Prompt
Windows XP: Start→All Programs →Accessories→Command Prompt
After the Command Prompt window has opened, enter the "PING"
command.
Example: C:\> ping XXX.XXX.XXX.XXX
XXX.XXX.XXX.XXX is the Host IP Address.
The following will be displayed if a successful connection is made.
Example: When the Host IP Address 192.168.150.150
The screen image may appear slightly different depending on the operating
system.
If a connection cannot be made, "Request timed out" is displayed.
Recheck the wireless LAN settings and the network settings.
If all else fails, consult your Network Administrator.
To return to the Windows desktop, type "exit", and then press the
Enter key.