IBM 7133 Series Service Manual

Step 4(from step 3 on page 2-2030-2)1. Identify the short 7133 power-control cable that connects the 7133 to theremote-power-on control unit. Disconnect that cable from connector J7 at the back ofthe 7133.2. Observe the fan-and-power-supply assemblies.Does at least one Fan-and-Power Check light remain on?NO In the sequence shown, exchange the following FRUs for new FRUs. Ensurethat for each FRU exchange, you go to “MAP 2410: 7133 – RepairVerification” on page 2-2410-1 to verify the repair.1. Remote-power-on control unit (see “Remote-Power-On Control Unit” onpage 3-55)2. Short 7133 power-control cable that connects the 7133 to theremote-power-on control unit.YES 1. Reconnect the short 7133 power-control cable to connector J7 at the backof the 7133.2. In the sequence shown, exchange the following FRUs for new FRUs.Ensure that for each FRU exchange, you go to “MAP 2410: 7133 – RepairVerification” on page 2-2410-1 to verify the repair.a. The fan-and-power-supply assembly whose Fan-and-Power Check lightdid not go off (see “Fan-and-Power-Supply Assemblies” on page 3-32)| b. The front-signal card, or bypass card, to which the other end of the7133 power-control cable is connected (see “Signal Cards and BypassCards” on page 3-43)| c. Left-hand (Models 010 and 020) or upper (Models 500 and 600)power-distribution tray assembly (see “Power-Distribution TrayAssemblies” on page 3-38)| d. Right-hand (Models 010 and 020) or lower (Models 500 and 600)power-distribution tray assembly (see “Power-Distribution TrayAssemblies” on page 3-38).Chapter 2. Problem Determination Procedures 2-2030-3