Atari 400 Service Manual

Figure 5-17. 400 Console, Bottom Cover Screw Location 5-31
Figure 5-18. 400 Console, Top Cover Removal 5-32
Figure 5-19. 400 Console, Keyboard Removal 5-32
Figure 5-20. 400 Console, Power Supply Removal 5-35
Figure 5-21. 400 Console, Module Assembly 5-36
Figure 5-22. 800 Console, Cartridge Door Assembly Removal 5-37
Figure 5-23. 800 Console, Bottom Cover Removal 5-38
Figure 5-24. 800 Console, Keyboard Removal 5-39
Figure 5-25. 800 Console, Module Assembly Removal 5-40
Figure 5-26. 800 Console, Power Supply Removal 5-41
Figure 5-27. 800 Console, CPU Printed Circuit Board Removal 5-41
Figure 5-28. 800 Console, Motherboard Removal 5-42
TABLES
Table 1-1. ATARI 400 Computer Console Specifications 1-11
Table 1-2. ATARI 800 Computer Console Specifications 1-12
Table 4-1 PIA Register Selection and Function 4-10
Table 4-2 Memory Map Select Lines 4-12
Table 4-3 I/O Decoder Select Lines 4-13
Table 5-1. Troubleshooting Guide 5-18

Atari 400 Specifications

General

Manufacturer	Atari
Model	400
Type	Home Computer
Release Year	1979
CPU	MOS Technology 6502
CPU Speed	1.79 MHz
ROM	10 KB
Operating System	Atari OS
Keyboard	Membrane keyboard
RAM	8 KB (expandable to 48 KB)
Graphics	ANTIC and GTIA chips
Sound	4 channels
Display	RF output for connection to TV
Storage	Optional cassette tape drive or floppy disk drive
Ports	Cartridge
Display Resolution	320x192 (16 colors)