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Download LG docs - TV - Conventional CRT, LCD Projectors, TFT, Plasma, Big Screen, HDTV, Home theater - Service manuals, repair tips

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File name:LG MC-64A Sch. and Adjusments.rar
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Size:1406 kB
MD5 Checksum:f4151505ad20b4d395670e94aac896de



Original Chassis:MC-64A
Descr:Sch. and Adjusments
Group:Electronics > Consumer electronics > TV >
Uploaded:2009-11-11 20:52:23
Multipart:No multipart

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LG MC-64A Sch. and Adjusments.pdfADJUSTMENT INSTRUCTIONS * Safety precautions 1. It is safe to adjust after using insulating transformer between the power supply line and chassis input to prevent the risk of electric shock and protect the instrument. 2. Never disconnect leads while the TV receiver is on. 3. Don't short any portion of circuits while power is on. 4. The adjustment must be done by the correct appliances. But this is changeable in view of productivity. 5. Unless otherwise noted, set the line voltage to 220Vac+_ 20%, 50/60Hz. * VCO (Voltage Controlled Oscillator) Adjustment Test Point Adjust JP4(L504) : VL501 : 1) Turn on DC power supplies. 2) Adjust VCO ADJ. coil(L501) so that the level of Picture Carrier (PC) may be at the lowest position as shown Fig. 2. *T est Equipment required 1. 2. 3. 4. 5. 6. 7. Swee p Generator Marker Generator(38.0MHz: Picture/32.5MHz: Sound) Alignmen t Scope(5121A) Patter n Generator(PAL/SECAM) DC Power Supply Color analyzer Multimeter(Volt meter) SC (Sound Carrier) : 32.5 M

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