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IBM PC Type 6266, 6270, 6276, 6279, 6280, 6286 User Guide
This guide provides detailed safety instructions, installation steps and configuration procedures for IBM PC models 6266, 6270, 6276, 6279, 6280 and 6286. It explains how to connect the computer to a properly grounded outlet, install or remove adapter cards, disks and other hardware, and update CMOS settings.
The manual also includes sections on screen and audio settings, internet connection setup, power‑saving features, and a comprehensive troubleshooting chapter with diagnostic codes and troubleshooting programs.
All IBM PC Type 6266 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What safety rules apply to the lithium battery?
Do not charge, disassemble, burn, or expose the lithium battery to heat.
What must be done before opening the system unit?
Turn off the computer and any external devices that have their own power switches.
What safety steps are required when installing the IBM PC?
Connect the computer to a grounded outlet using the three‑prong power cord and avoid ungrounded sockets or extension cords.
From: IBM PC Type 6266, 6270, 6276, 6279, 6280, 6286 User Guide
How can the CMOS settings be updated?
Use the configuration functions to update the CMOS settings as described in the manual.
From: IBM PC Type 6266, 6270, 6276, 6279, 6280, 6286 User Guide