[Show abstract][Hide abstract] ABSTRACT: The Multi-Chip Module (MCM) is the main processing block of the Pre-Processor System in the ATLAS Level-1 Calorimeter Trigger, The MCM holds a dedicated signal-processing ASIC and a Phos4 timing-chip together with seven commercial dice mounted on the substrate, Those are four f;ADCs and three LVDS-seriahzers. The MCM contains the main functionality of Ihc Preprocessor System, namely the digiti/atkm, calibration and Bimch-CrossingTdesUifieatiofi of calorimeter signals, Two output data streams are produced by the MCM, A real-time stream transmits the processed data to the subsequent trigger processors. A readout stream provides readout information of the Preprocessor, The MCM is the smallest exchangeable unit of the Preprocessor. The ATLAS experiment will have 2048 MCMs installed in the Pre-Proeessor system. Including spares, the total number runs up to 3000, The production phases of the MCMs and test procedures for quality control at different stages of the production arc presented.