Chapter 5: Problem Solving,

Maintenance, & Service

This chapter provides solutions to some common printer problems and explains the routine maintenance procedures that will help keep your printer in tip-top operating condition. It also tells you how to order parts, consumables and accessories, and provides information on obtaining service for your printer. You will find your printer’s warranty at the back of this Printer Handbook.

Problem Solving

What if ……nothing happens when I turn on the printer?

The printer may not be plugged in. Check the power cord connection to the outlet and to your printer. If you’re using a power strip, make sure it’s turned on. Check to be sure that the fuse hasn’t blown or that the circuit breaker hasn’t tripped.

…the printer doesn’t print when the computer sends data?

The printer may be deselected. If the SEL light is out, press the SEL button to select the printer.

The printer cable may not be securely connected. Check the cable to be sure that it is properly connected to both the PC and the printer.

If you have installed the serial I/F board, check to be sure that the board is firmly seated in the printer.

ML720/721 Printer Handbook

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