RCA 18V100 Power Supply, Keyboard ON/OFF Indicator Light, Selector Switch, Console Cord, Channel

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POWER SUPPLY

UNIT

KEYBOARD

A

ON/OFF

INDICATOR LIGHT

18 FOOT

TV/STUDIO II

SELECTOR SWITCH

CONSOLE CORD

 

 

 

KEYBOARD

 

 

B

 

 

CHANNEL

 

 

2/CHANNEL 3

 

 

SWITCH

STUDIO II CONSOLE

 

SOUND ON/OFF

CLEAR

SWITCH

 

BUTTON

(UNDER CONSOLE)

Figure 1. Studio II Major Assemblies

Description

GENERAL DESCRIPTION

Studio II is a sophisticated, microprocessor-based system for home entertainment using a broadcast TV receiver as the

display device.

Heart of the Studio II is a solid-state,40-pin integrated

circuit microprocessor that functions as a micro-miniature

computer. It provides central computer control for a great

variety of educational and entertainment programs. Program

memory for five built-in games - "Doodles", "Patterns",

"Bowling", "Freeway", and "Addition" is included in the

console. A receptacle in the console accepts plug-in program

cartridges for many additional games such as "Tennis",

"Baseball" and "Blackjack".

SYSTEM DESCRIPTION

Studio II consists of three major pieces:

Control Console Houses the keyboards and all electronics

for program selection and processing. All electronics in the

console (digital, RF oscillator/modulator and audio circuits)

are on a single PC board. Signal information from the console

is transferred to the Selector Switch Unit through a single

coaxial cable. This same cable carries DC power from the

Selector Switch Unit to the console to operate the electronics.

Selector Switch Unit Forms the interface between the

Control Console, the Studio II Power Supply Unit, the TV receiving antenna and the TV receiver. A two-position switch

allows the TV receiver to be connected conveniently to either

the Studio II or to the receiver's antenna system. This switch

also serves as the game's on/off switch.

Power Supply Unit - A sealed, 120 VAC to 9 VDC adapter

with a 6-foot(1 .8m) cord and plug that connects to a minia-

ture (3mm) phone jack on the Switch Selector Unit. The 9

VDC is coupled to the game's 18-foot (5.5m) coaxial cable

through an RF-filtering circuit housed in the Selector Switch

Unit.

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Contents Itc/i Table of Contents Switch Power SupplyKeyboard ON/OFF Indicator Light Selector SwitchSystem Connections Test ProceduresTo Antenna Power System Checking9a appears on screen immediately, and Tester Board must be replacedOne at a time of Keyboard A, and then Keyboard B. As £ sj Overall Block Diagram of Studio II SystemThree Numbers to be Added Enter a series of wrong answers, beginning with A1 As each Punch up Addition game Key A5. Sound switch Must be onKeyboard Tests Malfunction. If Tester is unavailable, the keyboards can beCoaxial cable from the console to the twin lead and com Pletes the DC circuit between the console and power supplyWith the switch in the TV position, it disconnects the con ComponentsStudio II Console Assembly Console Disassembly Component Replacement ProcedureMinimize radiation of modulated carrier Saw. See for dimensionsMilliseconds or more sync on Line and vertical input Clock Frequency Adjustment ProcedureScope Time-Base Locked to 60Hz Power Line Reconnect black, white and yellow leads from PC boardPC Board Packing and Shipment Exchange Plan DescriptionReturn Shipping Label Form 3E4589 RCA Distributor and Special Products Division Deptford NJ