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    Grundig-Sonoclock-52-SC-5302-Service-Manual电路原理图.pdf

    • 资源ID:73302       资源大小:1.92MB        全文页数:10页
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    Grundig-Sonoclock-52-SC-5302-Service-Manual电路原理图.pdf

    Sonoclock 52 SC 5302Service DocumentExchange SetEs gelten die Vorschriften und Sicherheitshinweisegemäß dem Service Manual “Sicherheit“, Material-nummer 720108000000, sowie zusätzlich die even-tuell abweichenden, landesspezifischen Vorschrif-ten!The regulations and safety instructions shall bevalid as provided by the “Safety“ Service Manual,part number 720108000000, as well as therespective national deviations.SDieses Service Dokument ist nur in Datenform verfügbarThis Service Document is only available as dataÄnderungen vorbehalten/Subject to alterationMade by GRUNDIG in Germany H-S43 0303http:/www.grundig.comSServiceManualSicherheitSafetyMaterialnr./Part No.720108000000IK501Sonoclock 52 SC 5302IK501Sonoclock 52 SC 5302IK501Sonoclock 52 SC 5302IK501Sonoclock 52 SC 5302IK501Sonoclock 52 SC 5302IK501Sonoclock 52 SC 5302IK501Sonoclock 52 SC 5302IK501Sonoclock 52 SC 5302IK501EQUIPMENT REQUIREDSignal Source1. FM signal generator (FM SG)2. Sweep generator (10.7 Mhz for FM)Output Indicator1. SSVM2. Oscilloscope3. Frequency CounterGeneral preparation1. Check source voltage.2. Set function switch to band being aligned3. Turn volume control to minimum (unless noted otherwise)4. Connect low side of signal and output indicator to chassis ground unless otherwise specified.Keep ground connection close to high side connection.5. Keep signal inout as low as possible to avoid and AFC action(set output indicator to high sensitivity.)6. Standard modulation is 1000 Hz AT 22.5KHZ amplitude for FM FM ALIGNMENT PROCEDUREStepSignal source (FM RF Gen.) ConnecttoSet signal toAlignment Indicator connect to OscilloscopeorSSVMSet Radio dial toAdjust Adjust for Remarks1 T1 Maximum Symmetrical response2 det. CoilSymmetrical response centered 10.7Mhz3 Repeat Step 1 and 2 as necessary to obtain S curve linearity , with maximum outputFM RF ALIGNMENT StepSignal source (FM Signal Gen.) ConnecttoSet signal toAlignment indicator (oscilloscope , VTVMConnecttoSet radio dial to Adjust Adjust for Remarks187.35 MHz modulated87.35MHz (lowestend)L7 (Osc, coil)2108.25MHz modulated108.25MHz (Highestend)C2 (Osc, trimmer)390 MHz modulated90MHzL3 (RF coil) stretch or squeeze4106 MHz modulated106MHz C1 (RF trim)5 repeat steps 3 and 4 as necessary to minimum tracking error. Also repeat steps 1 and 2 if necessary.* UK models must not be able to tune below 87.5 MHz.Quiet pointALIGNMENT PROCEDUREMODEL NO. GRUNDIG SONOCLOCK SC 52Volume control min- positionTP2 and GNDSweep centered 10.7 MHzTP3 Detector Output TerminalTP 1, GND (Test point) through matching network if necessaryAcross speaker voice coil MaximumVolume control Max- positionSonoclock 52 SC 5302IK5011981219724102338181314528 3033253342631394029274371617153611352021223226

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