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Field Service Ver. 7.0 Jan. 2009
ADJUSTMENT/SETTING
5.
HOW TO USE THE ADJUSTMENT SECTION
• "ADJUSTMENT/SETTING" contains detailed information on the adjustment items and
procedures for this machine.
• Throughout this "ADJUSTMENT/SETTING," the default settings are indicated by " ".
A. Advance checks
• Before attempting to solve the customer problem, the following advance checks must be
made. Check to see if:
1. The power supply voltage meets the specifications.
2. The power supply is properly grounded.
3. The machine shares the power supply with any other machine that draws large current
intermittently (e.g., elevator and air conditioner that generate electric noise).
4. The installation site is environmentally appropriate: high temperature, high humidity,
direct sunlight, ventilation, etc.; levelness of the installation site.
5. The original has a problem that may cause a defective image.
6. The density is properly selected.
7. Correct paper is being used for printing.
8. The units, parts, and supplies used for printing (developer, PC drum, etc.) are properly
replenished and replaced when they reach the end of their useful service life.
9. Toner is not running out.
B. Precautions for service jobs
1. To unplug the power cord of the machine before starting the service job procedures.
2. Special care should be used when handling the fusing unit which can be extremely hot.
3. The developing unit has a strong magnetic field. Keep watches and measuring instru-
ments away from it.
4. Take care not to damage the PC drum with a tool or similar device.
5. Do not touch IC pins with bare hands.
Y104784-2
5. HOW TO USE THE ADJUSTMENT SECTION
Service Manual
79
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