[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 FADCs and three LVDS-serializers. The MCM contains the main functionality of the Pre- Processor System, namely the digitization, calibration and Bunch-Crossing-Identication of calorimeter signals. Two out- put data streams are produced by the MCM. A real-time stream transmits the processed data to the subsequent trigger proces- sors. A readout stream provides readout information of the Pre- Processor. The MCM is the smallest exchangeable unit of the Pre- Processor. The ATLAS experiment will have 2048 MCMs in- stalled in the Pre-Processor 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 are presented.