This manual covers the Canon iR5870Ci, iR5870C, iR6870Ci, and iR6870C series devices. These machines are designed for high-volume office environments, offering advanced laser printing technology with copying speeds ranging from 55 to 65 pages per minute, depending on the specific model. Key features include duplex printing capabilities and standard Ethernet network connectivity. The devices are built to handle substantial workloads, with paper capacities typically in the thousands of sheets, and are capable of producing high-quality output at resolutions up to 1200 x 1200 dpi, utilizing monochrome and color toner cartridges.

The purpose of this English-language Service Repair Manual is to provide comprehensive guidance for service technicians. It includes detailed procedures for disassembly and assembly, along with a troubleshooting guide to assist in diagnosing and resolving issues. While specific model years are not detailed, this manual is essential for maintaining the operational integrity and longevity of the Canon iR5870Ci, iR5870C, iR6870Ci, and iR6870C series devices, ensuring they continue to perform at optimal levels.