Chapter 6 Troubleshooting - Brother HL-7050 Service Manual

CHAPTER 6 TROUBLESHOOTING
1. 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
5.
6-1
HL-7050 SERVICE MANUAL
subsection 1 'CONSUMABLE
1.