The printer is plugged directly into the comptuer. No USB hubs. 

Derek Agar 

----- Original Message ----- 
Subject: Re: [Hplip-help] invalid Dot4CreditRequest from peripheral 

Is the LJ3055 plugged directly into the printer or are you using a usb hub? 

A 


On 4/10/07, Derek Agar < [EMAIL PROTECTED] > wrote: 

Hi, 
I am trying to fix a problem with a HP LaserJet 3055 (MFP). I have Fedora Core 
5 installed, the latest version of cups for fc5 and hplip version of 1.7.3. The 
printer is very flaky about working and not working. I have tried to restart 
the computer and usually stuff starts printing out. 
Anyway, after issueing the command 
tail -f /var/log/messages 
I recieve these errors: 
... 
Apr 10 14:09:26 localhost hpiod: invalid Dot4CreditRequest from peripheral: 
io/hpiod/dot4.cpp 939 
Apr 10 14:09:26 localhost HP_LaserJet_3055?serial=00CNBJ020495: ERROR: check 
device; will retry in 30 seconds... 
... 
This is repeated indefinately. 

I am having the user use a HP OfficeJet 6100 (which works fine) until the issue 
is resolved. 
Any ideas? 
Thanks 


Derek Agar 


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