Atari 2600 Field Service Manual

Color Troubleshooting Procedure,
?Jo therboard
tive switchboard.
X200 frequency 1
correct? Defective X200.
1 Yes
Is color very
weak or not present
at all?
1 Yes
Pg. 4-22
I
With RZll fully
countcrciockwix
is there 6.5-7.5~
on pin 10 A201?
- I Defective
b there +6-7v on
the cathode of CR201?
I
Defective
signal
on cathode
CRZOO?
CR20
1
I
1s there a 3-5v P*
signal on cathode
C
Open or shorted
trace to diodes
Replace or Repair
(CR2OO or CR20 1 )
A I
Pg. 4-2
Yes
2600/2600A Domestic VCS
C208,C209,RZll
or
open trace
between CR2Ol
8
A P
and pin LO A201.
No
I I
-
Yes
Detective CR200.

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