Atari 800 Service Manual

Figure 5-9. PORT Test Error Table Screen Display
5.4 TROUBLESHOOTING GUIDE
The following table provides a list of possible failures at different
points in the power-up sequence and preceeding test procedures. The
table will list the failure, probable cause and the appropriate test
procedure to isolate the problem to a printed circuit board or inte-
grated circuit.
ATARI Personal Computers 5-17

Atari 800 Specifications

General

Processor	MOS Technology 6502
Processor Speed	1.79 MHz
ROM	10 KB
Graphics	ANTIC and GTIA chips
Release Year	1979
Display Resolution	up to 320 x 192
Colors	128 colors
Sound	4 channels
Storage	Cartridge, cassette, floppy disk
Ports	Cartridge, serial, monitor
Operating System	Atari OS