This document is the hardware maintenance manual for Lenovo 3000 J Series computers. It describes the features and characteristics of the product.
This Hardware Maintenance Manual provides service technicians with detailed procedures for troubleshooting, diagnosing, and repairing Lenovo 3000 J Series desktop computers. It includes safety guidelines, FRU part number listings, and step‑by‑step instructions for component replacement and BIOS updates.
The manual covers all machine types in the series (7387‑7398), offers diagnostic tools such as PC‑Doctor, and provides information on RoHS‑compliant parts, power management features, and additional service resources.
It is intended only for trained servicers who are familiar with Lenovo computer products.
FRU part numbers are available on the Lenovo support website.
All caution and danger statements in the Safety Information chapter must be read before performing any service.