CHAPTER 6 TROUBLESHOOTING; 1. INTRODUCTION; CHAPTER 6 TROUBLESHOOTING- Page 123

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.