Brother HL-7050 Series Service-Handbuch - Seite 11

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CHAPTER 6

TROUBLESHOOTING

INTRODUCTION

1.1

Initial Check

(1). Operating environment

Check if:

• The source voltage stays within ±10% from the rated voltage shown on the rating plate.

• The printer is installed on a solid, level surface.

• The room temperature is maintained between 10°C and 32.5°C. The relative humidity

is maintained between 20% and 80%.

• The printer is not located in a dusty place.

• The printer is not exposed to ammonia fumes or other harmful gases.

• The printer is not located in a hot or humid area (such as near water or a humidifier).

• The printer is not exposed to direct sunlight.

• The room is well-ventilated.

• The printer is not placed where the ventilation hole of the printer is blocked.

(2). Print paper

Check if:

• A recommended type of print paper is being used. [If the paper is too thick or too thin,

or tends to curl, paper jams or paper feed problems may occur, or printed images may

be blurred.]

• The print paper is damp. [If so, use fresh paper, and check whether the print quality

improves or not.]

• The print paper is short-grained paper or acid paper. [If so, print quality problems may

occur.]

For further information on paper, refer to

(3). Consumable parts

Check if:

• The message 'TONER LIFE END" appears on the LCD display of the printer control

panel when a toner cartridge is installed in the printer. [If the message appears, replace

the cartridge with a new one.]

For further information on consumable parts, refer to

PARTS' in CHAPTER

subsection 3.6 'Paper' in CHAPTER

6-1

HL-7050 SERVICE MANUAL

subsection 1 'CONSUMABLE