Dear Khun Nakrop and Khun Sirinthaporn,
Regarding to Dialight Short circuit (Sagging wire) on Device LTL-14CDJN-DL D/C.1615 defect ratio 0.1 %.
We have already received the Root cause analysis from PE.
One Root Cause is Risky smock touch with gold wire.
CQE we have re-visited the root cause by actual wire bonding process and found that operator smock and arm sleeves 100%
since beginning this year, but it is sagging wire case occurred in DC1615 or middle of Apr’16.
Smock with arm sleeves is impossible to make the sagging wire.
So, please re-visit the root cause and provide us the real root cause on Jul 11’2016.