Finished PCB Final Visual Inspection

[alonFAI]

Hi Guys,

I need to prepare test procedure and test report for the final visual inspection made by hand (not by machine) to a finished pcb (with the components after smt, reflow, wave, patch up etc..) can someone help me with a checklist details the test needs to be done or something similar?

Thank You!
Alon

 

[lk2012]

Hello,
is your test procedure specific to one product or are you planning to cover different types of PCBs?

Generally speaking, start with the test spec taking into consideration:
- drawing / spec (what are you checking for)
- lessons learned (look at the results of similar tests and also complaints and make sure the findings are featured in the new spec)
- test equipment incl. location (what you're going to be using for the inspection and is it adequate to detect any faults? Do you need any special equipment or dedicated workstation?)
- operator qualification

When you have these, you can start writing up the test procedure and spec.
Your test report can be an Excel file or a PDF coming out of a database that records your test results on the different points covered in your spec.

Sorry this is very generic but hope this helps.
Lil

 

[alonFAI]

lk2012 Hi,

thanks for the answer

the test is for different pcbs. the thing is I don't really know what to check.
there is a professional inspector who inspect the finished pcb according to ipc610 but he does that according to his knowledge and experience, he dosn't have a check list that document every step of the inspection, what i need basically is a written checklist, that i can change a bit according to my requirements if neccesary..

 

[Chennaiite]

lk2012 Hi,

thanks for the answer

the test is for different pcbs. the thing is I don't really know what to check.
there is a professional inspector who inspect the finished pcb according to ipc610 but he does that according to his knowledge and experience, he dosn't have a check list that document every step of the inspection, what i need basically is a written checklist, that i can change a bit according to my requirements if neccesary..

One question. How long your inspector has been doing this job based on this knowledge and experience?
I know you are expecting some specific check points for PCB for which some experts here might chip in. But if your inspector has been doing this for a considerable period of time without or with minimal complaints from downstream users, I think you already have good source of information in the form of your Inspector for creating a check list.

 

[lk2012]

hi,
I think the previous poster got the essence right.
Why not engage your inspector in putting together the procedure and test format?
Maybe you can spend some time shadowing them as they inspect a PCB (and then do the same for another type of PCB) and note down what they do in what order. At the same time, ask them what they're checking for (and also why - it's either in the standard you they might say something like 'oh I've seen this problem on another PCB the other day and it had to be reworked' which is lessons learned). In the end, review your findings with the inspector and ask them for 'expert advice' (that always works with my colleagues).
hope this helps
LK2012

 

[Mikishots]

lk2012 Hi,

thanks for the answer

the test is for different pcbs. the thing is I don't really know what to check.
there is a professional inspector who inspect the finished pcb according to ipc610 but he does that according to his knowledge and experience, he dosn't have a check list that document every step of the inspection, what i need basically is a written checklist, that i can change a bit according to my requirements if neccesary..

IPC-610 is definitely a place to start, and it is overall a friendly document to use (lotsa photos comparing do's and dont's).

You will need to incorporate the skills and experience of the person doing the inspection - this will dictate the content of the checklist. For someone that has little experience, the list will be longer and much more detailed.

Sit down with that inspector and tell him what you're trying to accomplish. He may not have a checklist, but he can certainly tell you what he's looking at and why. Your job is to make a record of it.

 

[Bjourne]

The procedure is with your experienced inspector. And as the gurus here have mentioned a sit-down with him with the specs in tow will give you a great start. Also just wanna share some of these links. Maybe helpful to you.

http://www.soppcb.com/zh_news.asp?id=5

http://www.soppcb.com/zh_news_view.asp?id=25

http://www.blackfoxonline.net/store/media/Blackfox_courseware_sample.pdf

http://www.eetasia.com/ARTICLES/1998SEP/1998SEP01_BT_ST_QA_SMT_RR_PM_TA.PDF

http://www.keysight.com/upload/cmc_upload/All/Why_Where_What_How_When.pdf?&cc=PH&lc=eng

http://www.muanalysis.com/_document...rd-Reliability-Integrity-Characterization.pdf

http://www2.l-3com.com/edi/pdf/6310034.pdf

http://www.iders.ca/wp-content/uploads/2010/10/Selecting_a_Pb_Free_v.1.1.pdf

http://jpk.sdp.edu.cn/dqx/xxwz/5xxzy/dzjc-ipc.pdf

http://www.ipc.org/4.0_knowledge/4.1_standards/ipc-a-610e-redline-april-2010.pdf

http://www.trans-techinc.com/documents/IMS/RF_Components/TT-PC-0378_PCB_Filters.pdf

http://www.goldphoenixpcb.com/html/qca/pqcs/sqcs/

http://www.goldphoenixpcb.com/html/qca/pqcs/index.html

 

[alonFAI]

thank you all! I appreciate the help