IBM 5155 User Manual

26 Is the screen white?
YES - Have the unit that the display was
attached
to serviced.
NO - Have the display serviced.
27 Tum the Brightness control fully
counterclockwise.
Brightness Control
28 Does the intensity of the characters decrease?
YES -
Go to the next step.
NO - Have the display serviced.
9000-10 Test January 1984

IBM 5155 Specifications

General

Model	IBM 5155
Category	Desktop
Release Year	1984
CPU	Intel 8088
Clock Speed	4.77 MHz
Display	9-inch monochrome CRT
RAM	256 KB, expandable to 640 KB
Storage	One or two 5.25" 360KB floppy disk drives
Graphics	CGA (Color Graphics Adapter)
Ports	Parallel, Serial, Keyboard
Operating System	IBM PC DOS
Weight	30 pounds (13.6 kg)