Chapter 3 Image Troubleshooting; Making Initial Checks; Site Environment; Checking The Documents - Canon PC400 Service Manual

CHAPTER 3 IMAGE TROUBLESHOOTING

A. Making Initial Checks

1. Site Environment

a. The voltage of the power source must be within the specifications.
b. Avoid areas subjected to dust or high temperature/humidity (near water faucets,
water boilers, humidifiers) and areas near open fires.
c. Avoid areas subjected to ammonium gas.
d. Avoid direct rays of the sun; otherwise, provide curtains.
e. Make sure the site is well ventilated.
f. Make sure the floor is level.
Check the site to see if it meets the above requirements.

2. Checking the Documents

You must first check to see if a particular problem may not be due to the document
used.
a. The copy density reading should be 5.5 ±1.5 (black)/4.5 ±1.5 (color).
b. Some backgrounds, i.e., yellow shades, tend to produce copies with poor
contrast.
c. Diazo copies or translucent documents tend to produce copies that may be
mistaken for foggy copies.
d. Documents prepared in light pencil tend to produce copies that may be mistaken
for light copies.
CHAPTER 3 IMAGE TROUBLESHOOTING
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