Atari 2600

Switchboard
The switchboard assembly holds the player option switches, the power supply, and the
RF modulator (See Figure 1-3).
0 PLAYER OPTION SWITCHES
Switches SlOL thru SL04 are double-pole, single-throw. Switches SL05 and
5106 are double-pole, double-throw.
All switches are connected between
the switchboard and the motherboard
by 1 2-conductor flexible ribbon
cable.
POWER SUPPLY
The power supply is composed of
a +5 voltage regulator, filter capacitors,
and the power on/off switch. Unregulated
DC is supplied to the board from
the battery eliminator.
A supply of +5 volts is routed through a filter
circuit to the RF modulator. The motherboard also receives its power
(+5
volts Vcc) from the switchboard via the same 12-conductor ribbon cable
referenced above.
0 RF MODULATOR
The RF modulator. converts the signal received from the Television
Interface Adaptor chip on the motherboard to
a frequency that a television
can receive and interpret.
Data between the RF module and the Television
Interface Adaptor chip is passed via the 12-conductor ribbon cable which
connects the motherboard to the switchboard.
A coaxial cable passes this
siqnal from the
RF module to the switch box mounted on the bac!c of the
television.
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Figure 1-3. 2600 Switchboard and Motherboard Assembly
1-3 2600/2600A Domestic
VCS