Step 17(from step 15 and step 16 on page 2-2010-6)Does any fan-and-power-supply assembly whose Fan-and-Power Check light is onhave its Power light on?NO Check whether mainline power is available.YES 1. Exchange, for new assemblies, all fan-and-power-supply assemblies whosePower lights are on (see “Fan-and-Power-Supply Assemblies” onpage 3-32).2. Go to “MAP 2410: 7133 – Repair Verification” on page 2-2410-1 to verifythe repair.Step 18(from step 12)Does any 7133 have its Subsystem Power light off?NO Go to step 19.YES Go to step 21 on page 2-2010-8.Step 19(from step 18)Do you have an SRN?NO| If you have reached this point through the SSA Link MAP in the SSA Adapters:| User’s Guide and Maintenance Information manual, go to “SSA Link Errors” on| page 2-11 to isolate the problem; otherwise, go to the SSA Link MAP in the| SSA Adapters: User’s Guide and Maintenance Information manual.YES Go to step 20 on page 2-2010-8.Chapter 2. Problem Determination Procedures 2-2010-7