TP/9S
6509xxxx
APPEARANCE CRITERIA
TEST ITEM
TEST METHOD
ACC. CRITERIA
Gap of adjacent white keys
Caliber
1.1 ± 0.5mm
Height tolerance of adjacent white keys
Ruler
≤
0.50mm
Scratches
Check by film
Scratches dimension
A-Zone
B-Zone
≤
0.8mm
≤
2pcs
≤
4pcs
≤
1.5mm
0pcs
≤
2pcs
Contaminations
Check by film
Spots dimension
A-Zone
B-Zone
≤
0.3mm
≤
2pcs
≤
4pcs
≤
0.5mm
0pcs
≤
3pcs
Color
Visual
Not acceptable any visible color variation
between different keys
Shrink
Visual
Not acceptable any visible shrink
QC – INCOMING INSPECTION
SAMPLING PLAN
According to ISO2859, ANSI/ASQ Z1.4-2003, NF06-022, BS 6001, DIN 40080, use the following:
• General Level I
• AQL 1.5
INCOMING INSPECTION TEST
• Cosmetic Inspection
• Measurement of the AFTERTOUCH values (TABLE 2-4)
QC – ASSEMBLY LINE INSPECTION
ASSEMBLY LINE QC
• 100% inspection
• Play all the keys
–
Every key must play sound
–
o Noise across the whole keyboard must be consistent such that no one key sounds louder or lower than
any other. Noise character must remain consistent across the keyboard
© 2021 FATAR srl
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