Service Parts List. It provides illustrated references for identifying and ordering replacement components. Entries include part numbers, descriptions, quantities per calculator, packaging information, and remarks. Photographs and drawings connect individual parts to their location in the machine. The listed components include the casing, display window, identification badges, base, carrying strap, circuit-board assembly, connectors, and display tube. The tables distinguish between parts specific to this model and components shared with other calculators, including the BC0801B. An introductory section explains the ordering and packaging codes, together with a clause covering price adjustments following changes in the yen exchange rate. Although the cover reads ‘BD-0804B’, the illustrated model badge and identification plate inside read ‘BC-0804B’, strongly suggesting a printing error on the cover.