Atari 2600 Field Service Manual

2600A Solid Colored Screen Troubleshooting (Continued)
I
Is 4-5v p-p @2 signal
Open trace between pin
present on A201 pin 26?
26 A201 and pin 39 A202.
t
Yes
+ J
Is there +5v and ground
NO
Open on Line to +5v or
on all of A200, A201,
' ground, or bad regulator.
A202, A203?
1
L r
No
Reset ready Lines good?
Open or shorted line.
Swapout
I liAZ00 I
Does unit
operate proper fy ?
I yes pg. 4-45
Repair
r
260012600A 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