Power-Distribution Tray AssembliesAttention: If you are servicing the 7133 under concurrent maintenance (see “ConcurrentMaintenance” on page 3-1), ensure that you have only one power-distribution trayassembly removed from the 7133 at any time.Note: Unless you have a particular reason to do so, do not turn off the using system orthe 7133 when removing or installing a power-distribution tray assembly.| 1 If not already done, remove (if an early type) or open (if a late type) the front cover| (see “Covers” on page 3-2).| 2 On Models 010 and 020, remove the control panel assembly 1 (see “Control Panel| Assembly” on page 3-36).| On Models 500 and 600, disconnect the control panel connector 3.3 Unscrew the captive screws 2, and remove the RFI shield 4.3-38 7133 Service Guide

IBM 7133 Series Service Manual