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WARNING
The information in this section is intended only for qualified service
personnel. Some of the procedures may expose you to hazardous voltages
that could result in personal injury or death. Do not attempt to perform these
procedures unless you are qualified to do so.
Introduction
This section contains information necessary to service the Model 2000-SCAN scanner card
and is arranged as follows:
Handling and cleaning precautions —
Discusses handling precautions and methods to
clean the card should it become contaminated.
Performance verification —
Covers the procedures necessary to determine if the scanner
card meets stated specifications.
Special handling of static-sensitive devices —
Reviews precautions necessary when
handling static-sensitive devices.
Principles of operation —
Briefly discusses circuit operation.
Troubleshooting —
Presents some troubleshooting tips for the Model 2000-SCAN including
relay replacement precautions.
Handling and cleaning precautions
Because of the high-impedance areas on the Model 2000-SCAN, care should be taken when
handling or servicing the card to prevent possible contamination. The following precautions
should be observed when servicing the card.
Handling precautions
•
Handle the card only by the edges and shields.
•
Do not touch any board surfaces or components not associated with the repair.
•
Do not touch areas adjacent to electrical contacts.
•
When servicing the card, wear clean cotton gloves.
•
Do not store or operate the card in an environment where dust could settle on the circuit
board.
•
Use dry nitrogen gas to clean dust off the board if necessary.
4-2
Service Information
Содержание 2000-Scan
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