RCA 18V100 User's Manual
Contents
1. 18 FOOT CONSOLE CORD TV STUDIO II SELECTOR SWITCH 2 7774 KEYBOARD B CHANNEL 2 CHANNEL 3 STUDIO II CONSOLE ON OFF INDICATOR LIGHT SWITCH SOUND ON OFF SWITCH UNDER CONSOLE CLEAR BUTTON Figure 1 Studio Major Assemblies Description GENERAL DESCRIPTION Studio Il 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 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 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 Uni2. Test Cartridge 5009339 Power Unit Assembly incl cord and plug 18V101 Power Unit for use with Tester 17 5008333 Selector Switch Assembly 18 102 Console Housing Upper Half Dwg No 1809952 Keyboard Assembly 742458 Console Housing Lower Half Dwg No 1809951 Speaker 2 24 inch diameter 742448 Dress Plate LED Indicator and Clear button LED Indicator incl plastic holder 742461 Dwg No 1808321 1 Clear Switch 742459 Dress Plate Studio 117 Dwg No 1808319 1 Requires special power unit Stock No 5008333 15 Printed in U S A 11 77 RCA Distributor and Special Products Division Deptford NJ 08096 Tmk s Marca s Registrada s Form 3E4589
3. Rubber Feet 742462 Quantity Description STUDIO II PC BOARD EXCHANGE QUESTIONNAIRE Please pack completed questionnaire in container with defective board with check or money order for 15 City 2 Defect Intermittent O Continuous 0 Note For in warranty board exchange include RCA Form PA737 Repair Report Attn Er Price subject to change without notice Studio Il Serial No z Please describe defect symptom s No display 5 l partial display no sound etc RETURN SHIPPING LABEL 5 9 2 T Firm Address o City 1 State Zip Defect Intermittent Continuous Note For in warranty board exchange include Attn RCA Form PA737 Repair Report 1 STUDIO II PC BOARD EXCHANGE QUESTIONNAIRE Please pack completed questionnaire in container with defective board with check or money order for 15 5 Price subject to change without notice Studio 11 Serial No F Please describe defect symptom s No display partial display no sound etc RETURN SHIPPING LABEL Gal lt 4 Firm Address sa Replacement Parts and Accessories Description Stock No Description Stock No PC Board less coaxial cable packed Pushbutton for Clear Switch 742460 in reusable shipping carton 742463 Rubber Feet Package of 4 742462 Cable Assembly 742421 Tester
4. instead of the original power unit 1 Press and hold Clear button on Studio console In sert Tester cartridge into slot while holding Clear button NOTE Insert cartridge into console with label Figure 8 Adjust Receiver for Sharp Freeway Display side toward Clear button Follow label directions concerning removal of conductive rubber strip covering the plug 2 Release Clear button A pattern similar to that of Fig 9a appears on screen immediately and Tester begins its scan of the system indicated by the black streak moving through the white field in the lower half of the pattern If the pattern fails to appear or a pattern other than that shown appears a faulty chip is indicated Replace PC board In about 11 seconds the first scan is complete The display 0 11 Seconds shifts to the pattern shown in Fig 9b with a white streak scanning a black field This scan takes another 11 seconds At the end of the second scan the system changes the pattern on the lower half to a series of transient vertical white lines on black and then a series of black lines on white This sequence takes about 2 seconds At the end of this short sequence the pattern again shifts to that illustrated in Fig 9c This indi cates all memories operational A digit or digits appearing in the checkerboard pattern in the center of the screen as shown in Fig indicates chip failure in the PC board and the board must be rep
5. ment n 16 6 ms VERTICAL SYNC NTERVAL Figure 33 Waveform Used to Adjust Clock Frequency Scope Time Base Locked to 60Hz Power Line RF SHIELD SCOPE CONNECTS HERE GND TO RF SHIELD Figure 34 Scope Connections for Adjusting Clock Frequency 13 EXCHANGE PLAN DESCRIPTION RCA operates a PC board refurbishing facility at Swannanoa North Carolina Defective PC boards sent to this facility are refurbished and returned to the sender at a cost of 15 00 provided of course the exchange board is repairable PC BOARD PACKING AND SHIPMENT NOTE If custom shipping container described below is not available pack PC board in cushion of crumpled newspapers or bubble pack in suitably sized carton Make sure board is completely sur rounded with cushion to prevent shipping damage that might make board useless for exchange Be sure to include a completed questionnaire from 15 in the package i 1 Pack defective PC board in foam shipping container as shown Note relative positions of PC board components and Figure 35 Packing PC Board in Foam Container CRUMPLED NEWSPAPER the molded in supports in the foam plastic If two halves of foam packing fail to mate easily reverse relative position of one to another 2 Pack foam enclosure in carton Use crumpled news papers as cushion around foam enclosure 3 Fill in all blanks on questionnaire par
6. on the console and press Key 4 on left hand Keyboard A Key A4 This sets Studio 11 for way and the track Fig 8 appears immediately If necessary adjust the receiver s fine tuning and vertical horizontal hold controls Operational Checks Test Cartridge See Page 7 for procedure using built in programs The test cartridge which plugs into the cartridge slot on the Studio 11 console scans the digital circuitry for trouble with a rou tine that takes about 30 seconds If it findsa malfunction the fact 4 Studio II CONSOLE SELECTOR TO ANTENNA Se OUTLET 0 POWER SUPPLY Use 75 ohm 300 ohm matching transformer if required Figure 2 Studio Connection Diagram CONSOLE s UNDERSIDE j ss o CH2 CHANNEL SWITCH Figure 3 Locations of Channel Change and Sound On Off Switches ANTENNA STUDIO II VIDEO SELECTOR CASSETTE SWITCH MACHINE BOX RECEIVER ANTENNA TERMINALS Selector Switch Box Connects Between Video Cassette Recorder and Home Receiver Figure 4 STUDIO II SELECTOR SWITCH RECEIVER ANTENNA TERMINALS Figure 5 Selector Switch Box Connects Between CATV Tuner and Home Receiver is indicated on the TV screen if there is no trouble the cartridge sets up a test for the two keyboards NOTE The Test Cartridge requires substitution of the power unit during test Use the special 500mA power unit see Parts List
7. AID FIRST e Figure 27 Disconnect Co Ax Shield First to Replace Cable Resolder Center Lead First on Installation Do Not Overheat Foil in Board LED indicator Replacement NOTE Installing a new LED in the console re quires the use of a special tool that can be fabri cated from a piece of sheet metal with a sabre saw See Fig 28 for dimensions 2 x 2 Figure 28 LED Replacement 1 Unsolder the black and white leadwires from Clear switch terminals and unsolder the yellow wire from the LED pigtail This frees the console top half for LED replacement 2 Snip both LED pigtails off close to the LED 3 Place console cover face up n block and drive out old LED with small screwdriver or 1 8 inch drift pin 12 4 From underside of cover bend clipped pigtails back and collapse black plastic holder with needlenose pliers or diagonal cutters Remove holder from console holes using pliers or cutter 5 Install new LED holder Press holder gently into hole in console cover until it clicks into place Fig 29 LED HOLDER N CONSOLE CABINET Figure 29 Cross Sectional View of Seated LED Holder in Console Cabinet 6 Place new LED in LED holder with shorter cathode pigtail toward side connected to Clear switch see Fig 30 and 31 This is important indicator cannot light if con CATHODE PIGTAIL SHORTER THAN ANODE Figure 30 Polarity
8. Marking on LED TO CLEAR SWITCH YELLOW WIRE PLASTIC PILLAR PART OF CONSOLE CABINET Figure 31 Indicator Assembly nected with reversed polarity Use fabricated tool Fig 28 to push LED into holder LED clicks into place Any tool without a shoulder usually pushes LED out of the holder 7 Form snipped leadwires as shown in Fig 31and connect new LED pigtails to them Solder quickly to prevent over heating LED 8 Reconnect black white and yellow leads from PC board to complete installation TO PC BOARD WHT Figure 32 Power On Indicator Wiring ADJUST SLUG FOR ZERO BEAT ON SCOPE WAVEFORM CLOCK FREQUENCY ADJUSTMENT PROCEDURE Incorrect clock frequency adjustment causes pattern weave on screen This results from a beat note between the vertical sync rate of Studio and the hum frequency in the TV re ceiver If the beat note is more than 0 5 Hz the weave becomes noticeable to the critical user Clock frequency is a slug adjust ment on the PC board 1 Connect scope probe to the junction of two resistors as shown in Fig 34 Connect scope ground to RF shield cartridge post or to other suitable board ground 2 Adjust scope time base for a total sweep length of 20 milliseconds more sync on Line and vertical input sensitivity for about 250 mV cm 0 625 V in 3 Push Clear button on console and adjust slug slowly for zero waveform drift See Fig 33 Guard against overadjust
9. Service Manual RCA Model 18V100 Home TV Programmer Studio II Home TV Programmer Model 18V100 Operation Testing Disassembly Parts List IPON YOY PRODUCT SAFETY NOTICE RCA Parts Distributors Called Tester 1 the cartridge plugs into the slot in the console and checks out the digital circuitry Studio 11 uses an isolated power supply to operate the in about 30 seconds See Page 4 for description and Page 15 electronic circuitry The leakage current to ground of this for ordering information power unit should be checked at time of game repair See Page 9 for test procedure SERVICE PARTS LIST AVAILABLE For those organizations planning to service Studio II video TESTER CARTRIDGE AVAILABLE games a kit of Studio II repair parts is available from RCA Parts Distributors This kit includes all of the parts necessary As an aid to servicing the digital electronics systems of to service Studio II units in the field See Page 15 for Studio II a test cartridge is available at nominal cost through description and for ordering information Table of Contents Page STUDIO II PC BOARD EXCHANGE QUESTIONNAIRE 15 DESCRIPTIONS 22 ru T S RR UU UNDO 3 Control Consol 5555 55202527 oncle ee Sr OU ERE er E ere 3 Selector Switch revers 3 Power Suppl
10. atisfactory keyboard function the pattern shifts to the pattern of Fig 9d The pattern flip flops between black on white and white on black until the Clear button is actuated If the Clear button functions normally the whole sequence starts again as the button is released This completes the Tester 17 test NOTE Reconnect the original power unit into the system Store the special unit with the test cartridge for future use Operational Checks Using Built In Programs The following instructions are for operating the built in resident games to evaluate Studio performance Bowling Game Press Clear key Press Key left hand keyboard Screen will display scorecard Fig 11 for about 3 seconds and immediately sets up alley Fig 12 with bowling ball moving up and down at the left side PLAYER 8 SCORE PLAYER A SCORE FRAME NUMBER Figure 11 Bowling Scorecard Display HOOK DOWN KEY 8 Figure 12 Bowling Ball Release Keys Keyboard is in action Pressing Ab releases a straight ball toward the pins Key A2 sends a ball with a left upward hook while Key A8 delivers a right downward hook Fig 12 Knocking out all pins on one throw registers a strike with a score of 20 ST 20 at lower left corner of alley two throws a score of 15 5 1 on screen The scorecard reappears for about 3 seconds after the second ball is thrown or all pins are downe
11. d Player 2 then plays right hand Keyboard B OPPOSING CAR CONTROLLED BY THE COMPUTER PLAYER S CAR Figure 13 Freeway Screen Display Freeway Game Press Clear key Press Key 4 racetrack appears on screen Fig 13 Press Key BO to start race Press and hold Key B4 to steer car to left Key B6 steers car to right Press A2 to speed up race throttle Key A8 slows car brake Object Accum ulate mileage by avoiding collisions with computer con trolled narrow bodied car in a two minute race At the end of the race the screen displays the distance traveled PLAYER A SCORE PLAYERB SCORE THREE NUMBERS TO BE ADDED Figure 14 Addition Screen Display Addition Function Press Clear key Press Key A5 Screen display appears as shown in Fig 14 Player has five seconds to add the three digits in the lower group and press the correct answer Key board or For example the 130 on Fig 14 adds to 4 Punch or to score The sooner the correct total is entered the higher the score Maximum score for each entry is 11 If the wrong total is entered the keyboard locks out and the player gets no second chance on the on screen com bination There are 20 sets in the run in random order Patterns Function Press Clear key Press Key A2 Screen remains dark Press Key B4 then Key BO The computer then paints the screen white from right to left and f
12. e defective keyboard from the ribbon connector on the PC board by pulling the ribbon straight out of the connector 3 Release the keyboard from the console by unlatching two brown colored latches as illustrated Keyboard is now free of console UNLATCH KEYBOARD AND DROP THROUGH CONSOLE Figure 25 Releasing Keyboard from Console 4 Install new keyboard by feeding ribbon cable through opening in console before latching keyboard in place 5 Push ribbon cable into connector NOTE Some Studio 11 units use unenclosed rib bon connectors on PC board Ribbon cable must center in the connector so that all 11 leads contact for proper operation 6 If ribbon cable from keyboard fails to make good contact in connector trim back 1 16 inch from edge with ordinary household scissors to expose fresh contact RIBBON CABLE Figure 26 Trim Ribbon Cable with Scissors to Repair Damaged Edge Coaxial Cable Replacement 1 Remove bottom half of console cabinet Pry off metal shield covering end of coaxial cable CAUTION Pry carefully so as not to damage foil wiring on PC board 2 Disconnect cable by unsoldering shield first Do not overheat foil 3 Anstall replacement cable as shown by soldering center lead first 4 Re install shield cover carefully and firmly Center coaxial 11 cable in slot in cover Fig 27 Shield must be fully seated to minimize radiation of modulated carrier DISCONNECT BR
13. igit number appears on screen enter a series of wrong answers beginning with A1 As each button is pressed the beeper sounds indicating the particular button is operational The beeper sounds only during the five seconds that the random order display is on screen Usually the entire keyboard can be checked during the five second display If any key fails to sound that key is faulty and the entire keyboard should be replaced KEY 5 START PLAYER A PLAYER B Studioll ENTERS D ENTERS SUM SUM CLEAR Figure 17 Using Addition to Check Keyboards Double Hit Keyboard Complaints Some early production units Serial Nos 37125 and lower occasionally exhibit a keyboard malfunction termed double hit when Studio 11 operates in the Patterns mode un wanted dots appear on the screen and the beeper sounds twice for only one key entry The only remedy for double hits is keyboard replacement Coaxial Cable Tests The coaxial cable carries modulated RF from the console and DC from the power unit Use an ohmmeter to test the cable from the plug end Fig 18 A good cable measures 5 to CABLE CONNECTOR OHMMETER Figure 18 Checking Continuity of Co ax Cable 50 ohms resistance with negative ohmmeter polarity on the center conductor With positive polarity on center conductor resistance should be between 20 and 30k ohms See Coaxial Cable Replacement Selector Switch Unit Tests The quickest tes
14. laced If the checkerboard appears as in Fig 9c touch the keys one at a time of Keyboard A and then Keyboard As each key switch closes the digit on screen should change to a checkerboard square If any digit remains on screen after key actuation the keyboard is defective and must be replaced see Page 11 When all key closures are complete indicating STUDIO CATV SELECTOR MATCHER SWITCH RECEIVER BOX ANTENNA TERMINALS 5 s a Figure 6 Selector Switch Box Connects Between CATV Cable Matcher and Home Receiver ANTENNA TERMINALS TO STICKY TAPE CONSOLE e Bad Key A7 and Digital Failure Figure 7 Selector Switch Box Figure 9 Tester 1 Screen Patterns QYdA33 QVdA3X H3AYd 1331 8 v r 1 Fg 21 28 edi u h 052 6 AlddNS H3MOd NS LINA 10 HOLIMS HO103 13S AL gt 4 123126 STVNIWHA3L VNN34 N Q H313HdH31NI 8 216 v2 982 sz z 212 161 B SWHO sz D BT gt D Quvo o x 32 Gs un m H313HdH31NI 8 216 9 1301539 80 asw wre vx 1 2808 HYOLVINGOW Vd l H313HdH31NI 3WY5 1 301538 oF E 2 8 1 8 D34 TWNIWHSL 7250 ZH 0921 u3xv3ads ae HOLIMS 5 Figure 10 Overall Block Diagram of Studio 11 System s
15. nit Power Supply Unit and Console If the complaint involves one or more plug in cartridges these should be included as well SYSTEM CHECKING Checking Studio operation be done quickly and easily using a test cartridge available from RCA see Page 15 for ordering information System performance can also be checked by operating each built in game function however this procedure takes more time than the test cartridge check SYSTEM CONNECTIONS Studio connects to the 300 ohm VHF antenna terminals of any TV receiver Figure 2 describes the hookup of the three subassemblies Figures 4 and 6 descirbe the hookups with typical video tape machines and typical cable TV setups Recessed on the underside of the console are two slide switches Fig 3 One switches the game sound beeper on or off while the other changes operating channel Studio 11 oper ates on TV Channel 2 or TV Channel 3 depending on the position of the switch The switch should be set on the unoc cupied channel or areas where both channels are occupied on the channel with the weakest broadcast signal Units are shipped from the factory with the switch in Channel 3 position Slide the switch on the Selector Switch Unit Fig 7 to Studio 117 This sends power to the console indicated by the red glow of the pilot light on the console and connects it to the TV receiver Studio 11 is now ready for operation TEST PROCEDURES Press the Clear button
16. pictures may result Late production units use insulated rivets which eliminate problem Power Supply Unit Tests The Power Supply Unit operates between carefully chosen voltage and ripple limits To check unit for satisfactory opera tion connect unit as shown in Fig 20 DC output under these conditions ranges between 8 5 and 10V Ripple on this DC measured with oscilloscope must not exceed peak to peak Replace unit if beyond these specifications see Parts List Leakage Current Test With the Power Supply Unit plugged into an AC outlet check for leakage current to earth ground on both poles of the phone plug as shown in Fig 21 using an AC milliam meter Leakage current must not exceed 0 5mA Reverse AC plug polarity and recheck leakage current READING SHOULD TO AC OUTLET NOT EXCEED LEAKAGE CURRENT TESTER POWER UNIT GROUND Figure 21 AC Leakage Test NOTE If power unit checks out OK but is inoper ative with operable Studio console check fit of plug in jack Some early production plugs and jacks have tolerances that conflict and prevent adequate plug penetration Solution to problem is often simply to increase effective length of plug by filing the jack slightly as shown in Fig 22 Use sharp knife to remove any untrimmed mold flash from plug if present FILE OR SHAVE SLIGHTLY TO INCREASE PLUG PENETRATION SELECTOR SWITCH Figure 22 Removal of Material from F
17. rom bottom to top Once the matrix is all white the computer then paints the screen black Press Key B5 the painting stops or freezes press Key BO painting resumes The keys of Keyboard write on the screen according to the white arrowheads on the keyboard Fig 15 To form an interesting pattern press Clear key then A2 B2 15 times B6 once and then BO The memory stores up to 130 key entries or moves After 130 moves the computer matically starts to repeat the pattern For 129 or fewer moves Key BO must be pressed to start the repeat cycle KEYBOARDA KEYBOARD 8 KEY 5 FREEZES PATTERN KEY 0 STARTS COMPUTER PATTERN Figure 15 Keyboard Moves Spot According to White Arrowheads on Panel Doodles Function Press key Press A1 Single dot appears on screen at lower left corner Use keys on Keyboard B to move spot according to white arrows on panel Fig 16 Key B5 leaves a trail as player writes with Keyboard B Pressing Key leaves no trail Retrace steps to erase lines already written Figure 16 In Doodles etch a sketch electronically with the B keyboard Key board Tests If Tester 1 cartridge is available use it to isolate keyboard malfunction If Tester is unavailable the keyboards can be tested using the built in Addition game Step 1 Punch up Addition game Key A5 Sound switch must be Step 2 When the three d
18. ront Edge of Jack CONSOLE DISASSEMBLY The console consists of six separate subassemblies the two halves of the cabinet printed circuit board two keyboards and a Clear switch power on indicator The upper and lower halves of the cabinet are separated by removing 5 Phillips head screws With the bottom cover re moved the underside of the printed circuit board is exposed Lift the PC board up at the cartridge socket side as shown in Fig 24 This exposes the component side of the board The board stands on edge if set between pillar near Clear switch and flange of cabinet upper half as shown CARTRIDGE TOP HALF OF CABINET Figure 24 PC Board in Wiring Access Position NOTE The channel change and sound on off switches plug in cartridge connector and other components mounted on the PC board are not field replaceable PC board faults except speaker require board exchange CAUTION Tuner sprays containing silicon must not be used on slide switches Irrepairable switch dam age will result COMPONENT REPLACEMENT PROCEDURE PC Board Removal Disconnect black white and yellow wires from board un solder coaxial cable from board and carefully pull out key board ribbon leads from RC board connectors See PC Board Packing and Shipment for board exchange details Page 14 Keyboard Replacement 1 Keyboard replacement requires console disassembly as described above 2 Unplug the ribbon cable of th
19. t Forms the interface between the Control Console the Studio Power Supply Unit the TV receiving antenna and the TV receiver 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 5 coaxial cable through an RF filtering circuit housed in the Selector Switch Unit Studio 1 Servicing The recommended Studio 11 service procedure is to deter mine whether the problem is in one of the periphery components the interconnecting cables or in the console itself If the PC board in the console is found to be faulty it must be returned to RCA for repair on an exchange basis See Page 14 IMPORTANT No attempt should be made to adjust or repair an inoperative PC board with the exception of the clock frequency adjustment described on Page 13 As an aid to servicing Studio II a test cartridge see below is available from RCA The cartridge is not essential to service Studio 11 however it does provide a quick and convenient means for isolating malfunctions in the digital systems When a Studio comes in for service it is important that you have a three assemblies Selector Switch U
20. t for a troublesome Selector Switch Unit is substitution with a new unit see Parts List If a new unit is unavailable use a DC voltmeter and ohmmeter to check unit circuitry see schematic of Fig 19 for open or short circuited components TWINLEAD TV SET CONNECTION GAME INPUT TRANSFER TERMINALS SWITCH PHONO ji ANTENNA JACK J3 TERMINALS 51 lt gt STUDIO II TV RFC2 DC INPUT TERMINALS PHONE JACK Figure 19 Schematic Selector Switch Unit When the switch is in the Studio 117 position it connects the coaxial cable from the console to the twin lead and com pletes the DC circuit between the console and power supply With the switch in the TV position it disconnects the con sole and forms a circuit between the antenna terminals and the twin lead for normal TV reception If the Selector Switch Unit is defective it must be replaced see Parts List since it cannot be satisfactorily repaired in the field It is carefully manufactured so as not to exceed the RF radiation limits specified by the FCC If snowy pictures occur in the TV position or Studio 11 cannot be shut off check antenna connections for short circuits 10V P P MAX RIPPLE TO 120V AC LINE ADJUST FOR 250 mAON MILLIAMMETER Figure 20 Testing Power Unit Output for Voltage and Ripple Content to the metal box or rivets holding terminal board If either antenna lead touches the box or rivets snowy
21. ticularly those indicating abnormal symptoms questionnaire packed with refurbished board Pack completed questionnaire on outside of upper corrugated filler as shown and pack in carton 4 Include check or money order for 1 5 00 A refurbished PC board will be shipped to the address you supply on the questionnaire packed with defective board 5 Ship prepaid Parcel Post or UPS to Studio PC Board Refurb Dept RCA Distributor amp Special Products Div Old Bee Tree Road Swannanoa North Carolina 28778 Price subject to change without notice QUESTIONNAIRE CORRUGATED BOARD CARTON Figure 36 Packing Foam PC Board Container in Carton Studio 11 Service Parts Kit Service organizations desiring to stock service replacement parts may order a kit of Studio 11 replacement parts and assemblies through RCA Parts Distributors as Stock No Stock No 742463 742421 18V102 18 101 742458 Quantity Description PC Board less coaxial cable Coaxial Cable Assembly Selector Switch Assembly Power Supply Unit Keyboard Assembly Includes reusable shipping carton for each board Price subject to change without notice 14 199047 Cost for the entire kit is 99 95 as compared with a total of 122 90 for the 20 individual pieces The kit includes Stock No Speaker 742448 LED Power Indicator Incl Holders 742461 Clear Switch 742459 Pushbutton for Clear Switch 742460 Set of 4 Console
22. y eus senses ue RE M UE EIE S 3 STUDIOUESERVIGING 2s TURO EET nor ONDE E eese ene 4 System LU E 4 System Connections e n LEE co rts NECS 4 Testi Procedures o e UE IER ce res DO OAs dien ede deoa eee 4 Control Dissassembly 5e ve cep ee eae i isse dei QURE ac RS URS 11 Component Replacement 11 Clock Frequency Adjustment Procedure 13 ex d RIS RE BE ae CHEST RENE NECS 14 Exchange Plan Description 14 PC Board Packing and 14 STUDIO II SERVICE PARTS P A us 14 REPLACEMENT PARTS AND ACCESSORIES 15 Information furnished by RCA is believed to be accurate and reliable However no responsibility is assumed by RCA for its use nor for any infringements of patents or other rights of third parties which may result from its use No license is granted by implicationor otherwise under any patent right of RCA RCA retains the right to make changes in this product at its discretion as may be periodically required POWER SUPPLY UNIT PLUG IN CARTRIDGE SOCKET KEYBOARD
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