Atari 2600 Field Service Manual

Paddle Lines Test
Put shorting
plugs
in. Put
VCS into
Diagnostic
Matrix mode.
Swapout
0 A201
2) A200
3) A202
1
J
I
Is there con-
tinuity between
the 1202 or 3203
pin
(see chart)
and the A20 I?
2
Checx 3202/3203 for RC
waveform (see Fig. 4-10).
Is waveform present on
each
of the pins shorn
I Yes
No
-
in char??
Check nace lines and
resistors for opens
.
rn
a
Repair
r
or shorted.
DO paddle lines now
work OK?
b
k RC waveform appear
on the appropriate J202
or J203 lie?
(Set Chart)
Yes
Line now work?
tiepav open
trace between
A201
and 12021
Yes
-
Yes
Connection Chart
pg. 4-2
b
3293.
Pin Pin Pi Cap
Plaver A201 3202 203
--
1 40
5 - CZ15
2 39 9 -
C216
3 38 - 5
C217
4 37 - 9 C218
I
b
#
2600/2600A Domestic VCS
'~c.~:~~~2~~~t
shown in the chart?
&

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