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CHAPTER 5

PERIODIC MAINTENANCE

To avoid creating secondary problems by mishandling, follow the warnings below during

maintenance work.

(1) Always turn off the power switch and unplug the power cord from the power outlet

before accessing any parts inside the printer.

(2) Some parts inside the printer are extremely hot immediately after the printer is used.

When opening the front cover or back cover to access any parts inside the printer,

never touch the red colored parts shown in the following figures.

CONSUMABLE PARTS

The consumable parts described in this section are parts which are subject to deterioration or

damage and should be replaced at least once during the period of warranty of the product if

any print quality problem appears.

1.1

Drum Unit

The "CHANGE DRUM SOON" message appears on the LCD display when the drum unit is

nearly at the end of its life.

Life expectancy:

NOTE:

There are many factors that determine the actual drum life, such as temperature, humidity and

type of paper that you use, etc.

WARNING

40,000 pages

(When printing A4 or Letter size paper at 5% print coverage)

5-1

HL-7050 SERVICE MANUAL