HP 3100, 3150 manual If neither of these solutions works, replace the formatter

Message Cause Solution

Printer Comm Error There was an error in communicating with the HP LaserJet 3100/3150 product.

Make sure that the parallel cable is securely connected between the HP LaserJet 3100/3150 product and the computer. Use the clips to clip the cable to its connector.

If the error persists, unplug the power cord from the power source for 10 seconds, and then replug it in.

Try connecting the product to a different power source or surge protector.

If neither of these solutions works, replace the formatter.

Printer Comm Error	In Service Mode only. There was an error
^1	in communicating with the HP LaserJet
	3100/3150 product.

Make sure that the parallel cable is securely connected between the HP LaserJet 3100/3150 product and the computer. Use the clips to clip the cable to its connector.

If the error persists, unplug the power cord from the power source for 10 seconds, and then replug it in.

If neither of these solutions works, replace the formatter.

Printer Fixing Error There is an error in the print engine. Replace Fixing Unit

Unplug the power cord from the power source for 10 seconds, and then replug it in.

Try connecting the product to a different power source.

Check the cabling connections to the heating element.

Perform the “Heating element check,” which is discussed later in this chapter. If the error persists, replace the heating element.

If, after replacing the heating element, the error persists, replace the ECU.

154 Troubleshooting EN