Brother HL-1870N, Service Manual

Page: 187 / 303

HL-1850/1870N SERVICE MANUAL
6-1
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 subsection 3.5 ‘Paper’ in CHAPTER 1 .
(3) Consumable parts
Check if:
• The “TONER LOW” message appears on the LCD display on 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 1. ‘CONSUMABLE PARTS’ in
CHAPTER 5 .