Atari 2600 Field Service Manual

2600A Gray Bars Troubleshooting Procedures
(Xevisions
14 and up)
'( R214, R15, and
signal on the A20 1
KL~ d with meter for
a I sideofR210,R215, correct value.
n --I-
ce any defective
and ~216?
components.
a
Open between A201
Is there 3-5v P-P Repair
-
and that resistor or
signal on the
A20 1 defective Cii202 ;
pin corresponding to
I
if L.M 1 is bad.
1 the resistor that had I
no signal?
u
Check pullup resistors
R218, R219,
or R229
on that line to insure
resistor
is good and
one side is connected
to
+5V.
J
Resistor Yes
Defective?
I I Replace
Pg. 4-45
Pg. 6-2
2600/2600A Domestic V

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