弁済請求

Order Information

Shenzhen Zancn Technology Ltd.
2017/08/31
Initial payment amount: US $2,280.66
Order number: 86040225700164 

Payment request for defective item

発注部品の不良のため下記の返金または代替品送付を要求する.
Sato requests refund or replacement components.
part number reason qty unit price
USD
subtotal
USD
EP2C5Q208C8N Physically damaged 45 5.95 267.75
EP2C5Q208C8N oxidized legs 41 5.95 243.95
EP2C5Q208C8N non functional 19 5.95 113.05
FM16W08-SG memory error 42 1.32 55.44
FM16W08-SG non functional
62 1.32 81.84
IS62WV5128BLL-55TLI memory error 2 1.93 3.86
IS62WV5128BLL-55TLI non functional 62 1.93 119.66
total 885.55

Payment request for return fee

代品送付に不良品返送を要求する場合は下記の送料と手数料を要求する.
佐藤が送った不良品を Zancn が交換せずに送り返すことを防ぐために,不良品の返送は代替品到達後に行なう. 
If Shenzhen Zancn Technology Ltd. request defective times, Sato requests the following shipping and handling fee.
To prevent non-replacements, Return of defective products is made after arrival of a substitute item.
price breakdown unit price
JPY
qtyRATE
USD/JPY
subtotal USD
return shipping cost (JP->CN) 5000 1 0.008825346395 44.12
replacement cost for EP2C5Q208C8N 700 60 0.008825346395 370.66
replacement cost for FM16W08-SG 100 104 0.008825346395 91.78
replacement cost for IS62WV5128BLL 200 64 0.008825346395 112.96
total 619.54

Testing environment

  • 佐藤が設計した基板向けに検品用に佐藤が作成したプログラムを実行する. 
  • EP2C5 から基板上に接続された memory, video, audio device に試験をした.
  • テストした基板は SMD 以外のコネクタは未実装の状態である. コネクタは単価が高く外せない. 信頼性に欠ける状態でコネクタを付けるのはそれを無駄にしてしまうため.
  • 本来コネクタをつける孔に電源を接続し、 USB ケーブルからPCへテスト内容を表示する.
  • EP2C5 や USB が正常に動作しない場合はテスト未到達とし、内部試験ができない.
  • The PCBs is designed by Sato, the diagnoser is programmed by Sato. 
  • EP2C5Q208C8N tests connected memory, video and audio device.
  • The tested PCB are not soldered non-SMD components. Because the connector is higher price and unremovable. We don't hope lost the connector by bad condition ICs.
  • The power source was connected to the hole where the connector was originally attached. The diagnoser display the result on the PCB via USB connection.
  • When EP2C5Q208C8N or USB connection is not worked, we assign it as "diagnoser is not worked".


  • 検品 198 のうち、試験通過は 46. EP2C5 が物理的損傷で試験ができないのが 45, EP2C5 があっても試験ができない基板が 62 である.
  • このため SMD 部品が全て良好でもコネクタを付けても完全な良品ではない可能性がある. (試験通過品3個中1個で最終的な製品としては動作不良が発生している)
  • The count of tested PCBs is 198. The count of QC passed PCBs is 46. Untestable PCBs is 45 because of physical damage. Untestable PCBs is 62 by internal error or USB connection.
  • SMD components may pass testing but without populating the rest of the components it's not possible to test completely so the actual number of functional PCBs may be smaller.

The details of defective components

The count of QC passed PCB is 46/200, percent defective is 77%.
Please check following URL for high resolution photos.
https://drive.google.com/drive/folders/17K_8H14rx4SInQsWv9rogAbGqLIMlyGB?usp=sharing 

EP2C5Q208C8N - physically damaged

Unsolderable ICs by missing legs or uncorrectable legs.
And assembler tried to solder, ICs were comed unstruck and dropped from the PCBs by many oxidized legs.
脚の欠落,修正不可能な曲がりのため半田付けが不可能なもの.
または半田付けをしたもの酸化のため半田付け途中に基板からICが剥離したもの.


EP2C5Q208C8N - oxidized legs

EP2C5Q208C8N からの検品テストで問題検出箇所が複数あり、酸化脚が多く接触不良.
The ICs has many loose wire by oxidized legs. The diagnoser detected many problem points.


EP2C5Q208C8N - unfunctional

EP2C5Q208C8N が基本的な内部動作が不良で検品テストが実行できない.
EP2C5Q208C8N has internal error on basic parts. The diagnoser cannot be executed.

FM16W08-SG, IS62WV5128BLL-55TLI - memory error

検品テストで該当部品のみが不良のもの. 部品交換により改善することが判明している.
The diagnoser founds one error. We know it can improve by replacement compnents.

FM16W08-SG, IS62WV5128BLL-55TLI - diagnoser is not worked

EP2C5Q208C8N が酸化脚または内部損傷のため、該当部品のみを純粋にテストできない. memory error が原因の不良率が 46% と高いためテスト未到達分全ての弁済を要求する.
The PCBs has loose wires by oxidized legs or internal error.  The diagnoser cannot purely test  only the target components. Sato requests the refund to all untestable components. Because the memory error percent defective is 46%. 
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