Classification Of Defectives; Critical Defective; Major Defective; Expression Of Defectives - BenQ G2420HD Product Service Manual

3.2.6.

CLASSIFICATION OF DEFECTIVES

A defective is a product which contains one or more defects. The defective will be
classified into following classes.

Critical defective

A critical defective contains one or more critical and may also contain major and/or minor
defects.

Major defective

A major defective contains one or more defects and may also contain minor defects but
contains no critical defect.
Minor defective
A minor defective contains one or more minor defects but contains no critical and major
defects.
3.2.7.

EXPRESSION OF DEFECTIVES

Percent of defects = ------------------------------------------ X 100%
3.2.8. INSPECTION STANDARD
Unless otherwise specified, the inspection standard will be defined by MIL- STD-
105E(ISO-2859), SINGLE SAMPLING PLAN. level II is in use all the time , inspection
levels are normal ,reduce and tighten .
Acceptance Quality Level
When a critical defect is found, this must be reported immediately upon detection, the lot
or batch shall be rejected and further shipments shall be held up pending instructions
from the responsible person in relevant organization.
Major Defective: 0.4 AQL
Minor Defective: 1.50 AQL
3.2.9. GENERAL RULES
The inspection must be carried out by trained inspectors having good knowledge of the
meaning of "fitness for use". The inspection must be based upon the documents
concerning the completely assembled and packed product when more defects appear
with the same cause only the most serious defect must be taken into account. Defects
found in accessories packed with the product as connecting cables, plugs, adapters and
the like, and being inspected as a part of the complete product, must be included in the
evaluation.
The evaluation must be within the limits of the product specification and, for not specified
characteristics, be related to the design model, limit samples or judgment of a jury of
experts. Faults must be demonstrable.
Number of defects
Number of products inspected
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