Re: Hooking a printer to a wireless router
I'm trying to remember what I remember about a LaserJet 4. I think you meant parallel, not serial, but that's not a big deal here.
I believe your printer has a JetDirect card. If the network jack on the printer appears to be in a removable card I'm 90% certain you have a HP JetDirect card. If the jack doesn't seem to be part of a removable card that your printer has JetDirect built in.
JetDirect it's what HP calls its print server product line. Unlike your PC's network card, the JetDirect card is a network card AND a print server. Think of the card as a small computer with a ethernet interface and can share its printer.
Like every other IP device on your network, the JetDirect must have a unique IP address. What I mean is, there can be no other device on your network with the same IP address.
How do you set the IP address? Some printers will have a display on them so you can configure some things. I recall the LJ4 having that too. If I can have some more information about your printer and the print server card in it I could possibley give you some more specific instructions. But speaking in general you can configure the IP settings of the JetDirect card several ways. If it's set for DHCP (Obtain IP Address Automatically) then it will grab an IP when you turn it on assuming it's connected to the network and assuming you have a DHCP server running on your network. On a home network this will likely be enabled or at least an available feature of your router. If the print server has a statically assigned IP address and its one that won't work on your network you'll need to change it.
You can do this from the printers control panel and buttons on the printer itself.
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You can temporarily modify the IP settings on your computer to be in the same network and subnet mask as the printer.
Telnet to the jet direct, change the ip settings.
Set your computer's IP settings back.
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Get JetAdmin from HP. It's software for managing/configuring JetDirect print servers. It was called JetAdmin the last time I used it anyway.
I know this sounds really complicated but it's not. I'll be glad to help you any way I can. Once it's setup it should work great and you can put the printer pretty much anywhere you want to as long as it's connected to the network.