IPC-7721(S).pdf - 第8页

Coating Replacement Procedure Description Illustration Product Class Skill Level Level of Conformance 2.4.1 Coating Replacement, Solder Resist R, F , W , C Intermediate High 2.4.2 Coating Replacement, Conformal Coatings/…

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Table of Contents
General ................................................................................................................................................................................................... 1
Handling/Cleaning
Procedure Description Illustration
Product
Class
Skill
Level
Level of
Conformance
2.1 Handling Electronic Assemblies R, F, C, W Intermediate High
2.2 Cleaning
R, F, C, W Intermediate High
Coating Removal
Procedure Description Illustration
Product
Class
Skill
Level
Level of
Conformance
2.3.1 Coating Removal, Identification of
Conformal Coating
R, F, W, C Advanced High
2.3.2 Coating Removal, Solvent Method
R, F, W, C Advanced High
2.3.3 Coating Removal, Peeling Method
R, F, W, C Advanced High
2.3.4 Coating Removal, Thermal Method
R, F, W, C Advanced High
2.3.5 Coating Removal, Grinding/
Scraping Method
R, F, W, C Advanced High
2.3.6 Coating Removal, Micro Blasting
Method
R, F, W, C Advanced High
February 1998 IPC-7721
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Coating Replacement
Procedure Description Illustration
Product
Class
Skill
Level
Level of
Conformance
2.4.1 Coating Replacement, Solder
Resist
R, F, W, C Intermediate High
2.4.2 Coating Replacement, Conformal
Coatings/Encapsulants
R, F, W, C Intermediate High
Surface Preparation
Procedure Description Illustration
Product
Class
Skill
Level
Level of
Conformance
2.5 Baking and Preheating R, F, W, C Intermediate High
Epoxy Mixing and Handling
Procedure Description Illustration
Product
Class
Skill
Level
Level of
Conformance
2.6 Epoxy Mixing and Handling R, F, W, C Intermediate High
Legends/Markings
Procedure Description Illustration
Product
Class
Skill
Level
Level of
Conformance
2.7.1 Legend/Marking, Stamping
Method
R, F, W, C Intermediate High
2.7.2 Legend/Marking, Hand Lettering
Method
R, F, W, C Intermediate High
2.7.3 Legend/Marking, Stencil Method
R, F, W, C Intermediate High
IPC-7721 February 1998
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Blisters and Delamination
Procedure Description Illustration
Product
Class
Skill
Level
Level of
Conformance
3.1 Delamination/Blister Repair,
Injection Method
R Advanced High
Bow & Twist
Procedure Description Illustration
Product
Class
Skill
Level
Level of
Conformance
3.2 Bow and Twist Repair R, W Advanced Medium
Hole Repair
Procedure Description Illustration
Product
Class
Skill
Level
Level of
Conformance
3.3.1 Hole Repair, Epoxy Method R, W Advanced High
3.3.2 Hole Repair,Transplant Method
R. W Expert High
Key and Slot Repair
Procedure Description Illustration
Product
Class
Skill
Level
Level of
Conformance
3.4.1 Key and Slot Repair, Epoxy
Method
R, W Advanced High
3.4.2 Key and Slot Repair, Transplant
Method
R, W Expert High
February 1998 IPC-7721
vii