HP Laserjet 4M Plus Printer error 18 MIO not ready (786 Views)
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Occasional Visitor
CA1278437
Posts: 2
Registered: ‎05-09-2005
Message 1 of 4 (786 Views)

HP Laserjet 4M Plus Printer error 18 MIO not ready

What is the Modular Card and where is it located? Can it be easily removed?
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Honored Contributor
Jimmy Gilmore
Posts: 1,910
Registered: ‎06-01-2004
Message 2 of 4 (786 Views)

Re: HP Laserjet 4M Plus Printer error 18 MIO not ready

John,
The MIO plugs in the back of the printer into the formatter board. Should be a couple of thumb screws holding it in place.
Jimmy
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Occasional Visitor
CA1278437
Posts: 2
Registered: ‎05-09-2005
Message 3 of 4 (786 Views)

Re: HP Laserjet 4M Plus Printer error 18 MIO not ready

Thanks Jimmy! I found it and solved my problem.
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Occasional Visitor
Mohammed Sayani
Posts: 1
Registered: ‎11-26-2005
Message 4 of 4 (786 Views)

Re: HP Laserjet 4M Plus Printer error 18 MIO not ready

When I am trying to print < I get the message "18 MIO not ready " How d I get rid of this message.
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