Atari 2600 Field Service Manual

2600A Trigger Line Troubleshooting Procedure
1 Yes
I
I Swapout
I
No
Cantinuity good? - Repair Trace
P
I A
1
I
-
Yes
Is there +5v at pin 6 of
-
1202 (Left Trigger) or
J203 (Right Trigger)?
I -
Open R224, R225 or
shorted (2216, C217.
h
Does trigger line work No R223 or R226 is shorted
properly
now?
i
1) A201
2) A200
3) A202
No
Are 2226 (Left Trigger) -
R223 (Right Trigger)
Pg. 6-2
Replace
defective resistor.
2600/2600A Domestic VC
goacl and connece to 2 b
C~V?
Chetk continuity
benvetn %Pins (3202 &
5203) and resistors
(R225 and R224).
A
I I

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