RCA 18V100 инструкция обслуживания

>~ Service Manual RCA Model 18V100 Home TV Programmer itc/i l, w Studio II <, Home TV Programmer, Model 18V100 Operation • Testing • Disassembly Parts List ^[...]

PRODUCT SAFETY NOTICE Studio II uses an isolated power supply to operate the electronic circuitry. The leakage current to ground of this power unit should be checked at time of game repair. See Page 9 for test procedure. TESTER CARTRIDGE AVAILABLE As an aid to servicing the digital electronics systems of Studio II, a test cartridge is available at [...]

r r POWER SUPPLY UNIT 18 FOOT CONSOLE CORD TV/STUDIO II SELECTOR SWITCH KEYBOARD A ON/OFF INDICATOR LIGHT STUDIO II CONSOLE CLEAR BUTTON KEYBOARD B CHANNEL 2/CHANNEL 3 SWITCH SOUND ON/OFF SWITCH (UNDER CONSOLE) Figure 1. Studio II Major Assemblies Description GENERAL DESCRIPTION Studio II is a sophisticated, microprocessor-based system for home ent[...]

Studio II Servicing The recommended Studio II 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 [...]

f r r 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) instead of the original power unit. 1. Press and hold "Clear" button on Studio II console. In- sert[...]

laxoos IT QdVO 3HV0 -M- -c+- !<<>£: sj sj J Figure 10. Overall Block Diagram of Studio II System[...]

r* r satisfactory keyboard function), the pattern shifts to the "OK" 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 "T[...]

The keys of Keyboard B "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 auto' matically starts to repeat[...]

r <** r 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 test for a troublesome Selector Switch Unit is substitution with a new unit (see Parts L[...]

^J Figure 23. Studio II Console Assembly 10[...]

r ~ r 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 printe[...]

cable in slot in cover (Fig. 27). Shield must be fully seated to minimize radiation of modulated carrier. 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 ho[...]

r 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. 31 and connect new LED pigtails to them. Solder quickly to prevent over- heating LED. 8. Reconnect black, white and ye[...]

PC Board Exchange 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 $1 5.00* provided, of course, the exchange board is repairable. PC BOARD PACKING AND SHIPMENT NOTE: If custom shipping container des[...]

r s r ~ C/3 I h- e? z: o _i < i- o LLi _l 00 I o o < h- O 1 STUDIO II PC BOARD 1 Please pack completed questionnaire in container 1 (Price subject to change without notice.) < 1 Please describe defect symptom (s). (Nodisplay, 1 partial display, no sound, etc.) EXCHANGE QUESTIONNAIRE with defective board with check or money order for $15. S[...]

^ ^ "j 3 RCA | Distributor and Special Products Division | Deptford NJ 08096 Tmk(s) ® Marca(s) Registrada(s) Printed in U.S.A. 11/77 Form 3E4589 J[...]