Purchase Solution

Quality Assurance: Printed Circuit Boards

Not what you're looking for?

Ask Custom Question

At ZYZ Company, a custom manufacturer of printed circuit boards, the finished boards are subjected to a final inspection prior to shipment to its customers. As XYZ's quality assurance manager, you are responsible for making a presentation to management on quality problems at the beginning of each month. Your assistant has analyzed the reject memos for all the circuit boards that were rejected during the past month. He has given you a summary statement listing the reference number of the circuit board and the reason for rejection from one of the following categories:
A= Poor electrolyte coverage
B=Improper lamination
C= Low copper plating
D= Plating separation
E= Improper etching
For 50 circuit boards that had been rejected last month, the summary statement showed the following:
C B C C D E C C B A D A C C C B C A C D C A C C B
A C A C B C C A C A A C C D A C C C E C C A B A C

-Prepare a tally sheet (or checklist) of the different reasons for rejection.
-Develop a Pareto chart to identify the more significant types of rejection.
-Examine the causes of the most significant type of defect, using a cause-and-effect diagram.

Purchase this Solution
Solution Summary

Guide to making Pareto and fishbone diagrams in simple easy to understand instruction.

Purchase this Solution
Free BrainMass Quizzes
Classical Mechanics

This quiz is designed to test and improve your knowledge on Classical Mechanics.

Intro to the Physics Waves

Some short-answer questions involving the basic vocabulary of string, sound, and water waves.

Basic Physics

This quiz will test your knowledge about basic Physics.

Introduction to Nanotechnology/Nanomaterials

This quiz is for any area of science. Test yourself to see what knowledge of nanotechnology you have. This content will also make you familiar with basic concepts of nanotechnology.

Variables in Science Experiments

How well do you understand variables? Test your knowledge of independent (manipulated), dependent (responding), and controlled variables with this 10 question quiz.

View More Free Quizzes
Related BrainMass Solutions

  • Cost apportionment through regression and high-low method

    Richard Ellis, the director of cost operations of American Micro devices, wishes to develop an accurate cost function to explain and predict support costs in the companys printed circuit board assembly operation. Mr.

  • Forecasting

    453724 Forecasting and Trends for Printed Circuit Boards A manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product.

  • Choice of Cost Driver

    after quality testing?of boards assembled during a week.) Much of the effort in this assembly operation is devoted to testing for quality and reworking defective boards, all of which increase the average cycle time in any period. Therefore, Mr.

  • Calculating design and effective capacity utilization

    454943 Utilization measures A manufacturer of printed circuit boards has a design capacity of 1000 boards per day. The effective capacity, however, is 700 boards per day. Recently, the production facility has been producing 950 boards per day.

  • Cost Drivers for the American Micro Devices

    after quality testing?of boards assembled during a week.) Much of the effort in this assembly operation is devoted to testing for quality and reworking defective boards, all of which increase the average cycle time in any period. Therefore, Mr.

  • Exponential Smoothing

    375357 Operations Management: Forecast Trend A manufacturer of printed circuit boards uses exponential smoothing with trend to forecast monthly demand of its product. At the end of December, the company wishes to forecast sales for January.

  • Standad costing

    circuit boards(PCB) and the reading heads (RH) groups.

  • Creating a Decision Tree: Understanding Risk Tolerance Levels

    634652 Creating a Decision Tree: Understanding Risk Tolerance Levels BUYU Manufacturing has been contracted to provide SAEL Electronics with printed circuit and motherboards (PC) boards under the following terms: • 100,000 PC boards will be delivered

  • Adler Industries: Transfer price for transistor division

    The Board Division manufactures printed circuit boards (PCBs). One PCB model is made exclusively for the Systems Division, using proprietary designs, whereas less complex models are sold to outside customers.

View More Related Solutions