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Confidential
CHAPTER 1 TROUBLESHOOTING
1. INTRODUCTION
Troubleshooting is a collection of solution procedures that service personnel should follow if
an error or malfunction occurs in the machine. It is difficult to determine troubleshooting
procedures for all possible problems that may occur in the future. Therefore, this chapter
describes typical problems and recovery procedures for these. These will help service
personnel identify and repair other similar defective sections.
Be sure to observe the Troubleshooting/Disassembling/Assembling Notes during
maintenance work for troubleshooting.
1.1 Checks before Commencing Troubleshooting
Operating environment
(1) The machine is placed on a flat, stable surface.
(2) The machine is used in a clean environment where the temperature is 10°C (50°F) to
32.5°C (90.5°F), and the relative humidity is maintained between 20% and 80%.
(3) The machine is not exposed to direct sunlight, excessive heat, moisture, or dust.
(4) Hold the machine level while moving it.
Power supply
(1) Power described on the rating label attached on the machine is supplied. Power
fluctuation should be within ±10% of the rated voltage.
(2) The AC input power supply is within the regulated value.
(3) The cables and harnesses are connected correctly.
(4) The fuses are not blown.
Paper
(1) The recommended type of paper is being used.
(2) The document is not damp.
(3) Short-grained paper or acid paper is not used.
Consumable parts
(1) The drum unit (including toner cartridge) is set correctly.
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