MAINTENANCE AND REPAIR OF RADIO RECEIVER Competency : Repairing of Radio Receiver

OBJECTIVE Teknologi dan Rekayasa Can find maintenance and repair method of radio receiver

STEPS OF MAINTENANCE Teknologi dan Rekayasa Listen carefully to disturbances of what was happening on the aircraft concerned. Then to ensure that disruption kaeadaan, playback control buttons are on the plane. 1.Understand Invasive Situation

Teknologi dan Rekayasa 2.Recapitulating Obstructs That Damaged When symptoms have been known for certain, make a temporary conclusion that the interference occurs because of damage to the core or part of it and so on

Teknologi dan Rekayasa 3.Drawing the line damaged region Examined not just one particular point, but it can be said is wide enough. A B B. Rusak A. Rusak Apakah A normal? Tidak Daerah circuit yang dicurigai

Teknologi dan Rekayasa 4.Damage by methodics measurement location Measuring steps the voltage to be done; 1.Turn on your radio receiver and transmitter-transmitter datalah existing regional location you for MAND MW! 2.Turn off the receiver, then connect the antenna with ground plane connecting cables are available to avoid the incoming signal into your aircraft. 3.Turn back the receiver. 4.Measure voltage, use the Multimeter to measure voltage legs all active components such as transistors, record results and make a table pengulkuran measurement results.

Teknologi dan Rekayasa Tension measurement on component

Teknologi dan Rekayasa 5.Damage by traces series band location By using the screwdriver method yng touched with a finger at one particular point, will know the location of the disturbance occurred in the radio receiver. This experimental procedure can be performed sequentially, from the loudspeaker to the front of the terminal antenna circuit

Teknologi dan Rekayasa Band measurement with AVO meter

POOR RADIO NOISE Teknologi dan Rekayasa No.Bagian Yang RusakAnalisa pengukuranPenyelesaian 1. Detektor (transistor)Tegangan bias yg salah pada transistor -Betulkan tegangan bias -Ganti dengan transistor yg baru 2.Detektro (dioda) Tegangan bias yg salah Pada dioda -Betulkan tegangan bias -Ganti dengan dioda yg baru 3.Filter AGC Kondensator filter AGC putus Periksa sirkuit /komponen sekitar rangkaian detektor

TIDAK ADA SINYAL Teknologi dan Rekayasa No. Bagian Yang Rusak Analisa pengukuranPenyelesaian 1. Gulungan transformator IF Hambatan kumparan sekunder trafo putus -Ganti trafo IF 2. Detektor (dioda)/ (transistor) Tegangan bias yg salah Pada dioda -Betulkan tegangan bias -Ganti dengan dioda yg baru 3. Oscilator lokal pada rangkaian penala Transistor penguat RF tegangan bias yg salah -Priksa sirkuit /komponen -Sekitar rangkaian penala

THE END Teknologi dan Rekayasa By. Setyo Harmadi,ST SMK Muhammadiyah 3 Yogyakarta