Servicing Cautions; Damage From Static Charge; Scanner Section - Canon FAX-L260i Service Manual

FAX-L260i Chapter 1: General Description

5.3 Servicing Cautions

5.3.1 Damage from static charge

This unit contains contact sensors and printed circuit boards equipped with ROM, RAM, custom chips, etc.
These electronic components are susceptible to damage caused by static charge.
When disassembling this unit, take care to prevent static charge.
The following items are required to prevent static charge:
• A grounded, conductive mat
• Grounding wrist straps
• A cord with alligator clips to ground this unit's metal chassis
If you do not have any of the above on hand (during on-site servicing), follow the alternate measures below:
• Use a grounding bag to store and transport printed circuit boards and electronic devices.
• Avoid wearing silk or polyester clothing and leather-soled shoes. Wear cotton clothing and rubber-soled
shoes instead.
• Avoid servicing this unit in a carpeted room.
• Before servicing this unit, touch this unit's grounded terminals to discharge any static charge.
• Wear grounding wrist straps and ground this unit's metal chassis.
• Always handle the circuit boards and devices along their edges. Do not touch the components and termi-
nals with your fingers.

5.3.2 Scanner section

a) Contact sensor
• Handle contact sensors with care to prevent scratching or smudging of the scanning surface. Scratches or
smudges can cause vertical stripes, etc., to appear on the scanned image.
b) ADF rollers
• Be careful not to scratch the ADF rollers. If the rollers are scratched, paper jams may result.
c) Lubrication points
• Document feed roller.
Static electricity
Static charge can damage electronic components or alter their electrical characteristics. Even
plastic tools and hands without grounding wrist straps can generate damaging static charge.
Shock hazard during power on
If servicing must be performed while this unit is turned on, do not wear any grounding wrist
straps. This is to prevent electricity from passing through your body.
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