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CHAPTER 6 TROUBLESHOOTING
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 damped. [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 LED is not lit on the printer control panel when a toner cartridge is installed in
the printer. [If the LED is lit, replace the cartridge with a new one.]
For further information on consumable parts, refer to Section 1 ‘Consumable Parts’ in
CHAPTER 5.
(4) Others
Condensation:
When the printer is moved from a cold room into a warm room in cold weather,
condensation may occur inside the printer, causing various problems as listed below:
• Condensation on the optical surfaces such as the scanning mirror, lenses, the reflection
mirror and the protection glass may cause the print image to be light.
• If the photosensitive drum is cold, the electrical resistance of the photosensitive layer is
increased, making it impossible to obtain the correct contrast when printing.