Troubleshooting Checklist

If the printer does not appear to be functioning correctly, check the following items:

Problem or Error Message

Solution

 

 

The printer control panel display is blank.

Make sure the printer’s power switch is on.

 

The printer might be in Power Save mode. Press [Go].

 

Make sure all power cables are securely attached and plugged into a

 

grounded power source.

 

 

The printer control panel displays OFFLINE

Press [Go].

 

 

Printer control panel displays

Either no cable, a bad cable, or only a LocalTalk cable is attached to the

EIO 1 INITIALIZING.

HP JetDirect internal print server.

 

For LocalTalk connections, the message should disappear after

 

approximately 5 minutes, during which normal printing is possible. Check

 

the cable connection.

 

The HP JetDirect internal print server might be improperly installed.

 

Reinstall the print server.

 

There might be a network problem. See the HP JetDirect Print Server

 

Software Installation Guide. Also, see “Step 4: Connecting the Printer to

 

a Network” about how to add 50-Ohm terminators, if necessary.

 

 

Cannot print from the computer using a parallel

The cable might be installed incorrectly, too long, or faulty. Remove the

cable.

cable and reconnect it, making sure it is securely connected. Try another

 

parallel cable under 10 feet (approximately 3 meters) in length. Replace

 

the cable with an HP parallel cable (part number C2946A) or equivalent.

 

The wrong port might be selected or rerouted. Check the MODE

 

statement in the AUTOEXEC.BAT file. In Windows 3.1, look in the

 

Control Panel to see which port is selected. In Windows 95 or Windows

 

NT, check the Parallel Port Capture.

 

There might be a bad port on the computer or printer. Try using a

 

different port or, if possible, a different computer or printer to isolate the

 

problem.

 

 

Cannot print using a sharing device.

Try to isolate the cause of the problem. Test the printer using a cable

 

connected directly from the computer to the printer. Contact the sharing

 

device vendor for troubleshooting steps.

 

 

Random “garbage” characters are printing.

The interface cable might be bad or loose. Check the cable and

 

connection. Try another parallel cable under 10 feet (approximately 3

 

meters) in length. Replace the cable with an HP Parallel cable (part

 

number C2946A) or equivalent.

 

 

Printer control panel displays

Media might be jammed in one of several locations. Clear all jams

CLEAR PAPER JAM.

according to instructions in the quick reference guide.

 

 

Printer control panel displays an unfamiliar

Turn the printer off, then back on. If the message does not clear, see the

message.

online user’s guide for more information.

 

 

For more printer control panel messages and troubleshooting solutions, see the online user’s guide.

EN

Troubleshooting Checklist 49

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HP Pro 8500, 8500 DN, 8500 N manual Troubleshooting Checklist, Problem or Error Message Solution