12. Was a manufacturing engineering service (MES), system upgrade, feature, or any other field bill ofmaterial or feature field bill of material installed just before the intermittent problems startedoccurring?v No: Continue with the next step.v Yes: Review the installation instructions to ensure that each step was performed correctly. Thencontinue with the next step of this procedure.13. Is the problem associated with a storage device?v No: Continue with the next step.v Yes: Ensure that the customer is using the correct storage device cleaning procedures and goodstorage media. Then continue with the next step of this procedure.14. Ensure that all the items in Preventive maintenance (PM) are being performed regularly.Perform the following to help prevent intermittent thermal checks:v Ensure that the AMDs on all disk units, tape units, and power supplies are working.v Exchange all air filters as recommended.15. If necessary, review the intermittent problems with your next level of support and installation planningrepresentative.Ensure that all installation planning checks were made on the system. Because external conditionsare constantly changing, the site may need to be checked again.This ends the procedure.How to analyze the intermittent problemFor use by authorized service providers.Use this procedure to begin analyzing an intermittent problem.1. Is a reference code associated with the intermittent problem?v No: Continue with the next step.v Yes: Go to the System reference code list, and find the reference code. If the actions in the systemreference code tables do not correct the intermittent problem, return here and continue with the nextstep.2. Is a symptom associated with the intermittent problem?v No: Continue with the next step.v Yes: Go to “Intermittent symptoms.” If it does not correct the intermittent problem, return here andcontinue with the next step.3. Go to “Failing area INT-PIPs” on page 17. If it does not correct the intermittent problem, return hereand continue with the next step.4. Send the data you have collected to your next level of support so that an Authorized Program AnalysisReport (APAR) or a Licensed Internal Code Trouble Report (LICTR) can be written.This ends the procedure.Intermittent symptomsFor use by authorized service providers.Use the table below to find the symptom and description of the intermittent problem. Then perform thecorresponding intermittent problem isolation procedures (INT-PIPs) (which begin at “Intermittent PIPs” onpage 108).Although an INT-PIP may correct the intermittent problem, use your best judgment to determine if youshould perform the remainder of the INT-PIPs shown for the symptom.Table 1. Intermittent symptoms16 iSeries: iSeries Server 270, 800, 810, 820, 825, 830, 840, 870, 890, SB2, and SB3 Hardware Problem Analysis and Isolation
