Atari 400 Service Manual

• Set Aluminum Casting on its back, invert Motherboard
and gently lower into Casting.
NOTE
CPU PCB must fit into guides in the Aluminum Casting
• Install Lower Shield with eight screws (no. 6 32x3/8)
• Install Module Assembly in Bottom Cover
2. Keyboard Installation, refer to Figure 5-19
• Plug Speaker cable into Motherboard (no polarity) and
set Speaker in Bottom Cover
• Plug Keyboard ribbon cable into connector on Motherboard
• Gently lower Keyboard over the Power-ON LED and guide
posts on Aluminium Casting
Figure 5-28. 800 Console, Motherboard Removal
ATARI Personal Computers 5-42

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)