MaintenanceThe top cover assembly, with the display assembly mounted on it, is nowcompletely reassembled, as shown in the following photograph.11. Reattach the top cover assembly.See “Reattaching the Top Cover Assembly to the Device” on page 81 forinstructions.12. Continue with the appropriate functional checkout procedure for this FRU.See “Functional Checkout” on page 129 for more information.Internal ModemThe following procedures describe how to remove and replace the internal modem.Removing the Internal ModemUse the following procedure to remove the internal modem.1. Before beginning any steps, follow the instructions in “Preparing the System forFRU Replacement” on page 73.2. Remove the top cover assembly, if it is has not been removed already.See “Removing the Top Cover Assembly” on page 75 for more information.118 MAC™ 2000 ECG Analysis System 2053535-003C