: Upon startup, the machine automatically executes a memory check, wavelength drive mechanism check, and lamp ignition check.
: General brochures and software control guides for the U-series can be found on the Hitachi High-Tech website .
Also, I want to mention that usually, user manuals are provided by the manufacturer and it's not common to find a free user manual for a specific device. If you're looking for a user manual for the Hitachi U-2800 Spectrophotometer, I recommend checking the manufacturer's website or contacting their customer support directly.
: Many academic institutions host "Standard Operating Procedures" (SOPs) or condensed manuals for their lab equipment. Searching for "Hitachi U-2800 SOP" + "University" often yields practical guides.
The U-2800 features a numeric keypad and LCD display. The manual explains: