Atari 2600 Field Service Manual

2600 FAILURES
LOGIC FAILURES
DIAGNOSTIC
POSSIBLE CAUSE POSSIBLE CAUSE FLOWCHART
SYMPTOM (mother board) (switchboard) ENTRY POINT
Solid colored A200, A202, TIA A101,RFModule J,pg.4-9
screen X200, 4200, 4201,
open or shorted
Address or Data line
Vertical lines ,4200,
A201, A202,
5200, open
or
shorted Address or
Data line
J, pg. 4-9
VIDEO FAILURES
DIAGNOSTIC
POSSIBLE CAUSE POSSIBLE CAUSE FLOWCHART
SYMPTOM (mother board) (switchboard) ENTRY POINT
Snowy screen no power, A203 A101, L101, RF L, pg. 4-1 1
5201, J204
Module,
J 10 1
Weak picture N/ A
Wronrg
Gray Bars A201, A203,
R2 18-R220
LlOl,RFModule, X,pg.4-18
RF Cable
P, pg. 4-14
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2600/2600A Domestic VCS

Atari 2600 Specifications

General

Manufacturer	Atari, Inc.
Release Date	September 11, 1977
CPU	MOS Technology 6507
CPU Speed	1.19 MHz
RAM	128 bytes
Graphics	Television Interface Adaptor (TIA)
Media	ROM cartridge
Successor	Atari 5200
Colors	128
Sound	2 channels
ROM	4 KB
Controller Input	Joystick