Atari 2600 Field Service Manual

2600A SoLid Colored Screen Troubleshootinq
Yes
I
!s L-lv p+ QO siqnal
?resent
on pm i AZOl?
.
Pg. 6-2
I
2600/2600A Domestic VCS
-
1
I
1s 4-Sv p-p slqnal pen between pm 27 .+ZOO;,
xesent on DUI 27 A2OO?
and pm
A201.
I
1
J
J
Yes
-
Does unit function?
'
1'
J
L
Pin b A201 snorted.
4 1
Reoav
I
b J
-
Swapour
1) A201
2) ,420fl
IS b-sv p+ S)Z siqnal
xemr on pm ZS .4200?
Yes
Pin !S AZOO saortcd ,
No
-
Swapout
1) A200
2) 4202
2
Does unit ~W-IO~?
to
ground. Reoair.
I
Is J-Sv p-p 92 signal
aresent on
pin 26 A2011
I
ye5
J
Open oerwccn pin 39 A202
and pm 29 A200.
h
2
beween Pm 26
A201 and pin 28 A2(XI.

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