kertas penerangan

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KOD NAMA DAN PROGRAM ETN 302 – AUDIO AND VIDEO MAINTENANCE 2 TAHAP TAHAP 2 / SEMESTER 3 NO. DAN TAJUK MODUL REPAIR FAULTY AUDIO CONFERENCE SYSTEM NO DAN PERNYATAAN TUGASAN 1. Identify symptom of faulty audio conference system. 2. Locate fault by using necessary test equipment. 3. Replace faulty component. 4. Test for serviceability OBJEKTIF PENCAPAIAN AKHIRAN 1. Explain operation of block diagram and circuit diagram according to service manual. 2. Explain various types of conference audio system. 3. Identify symptom and fault of audio conference system according to circuit diagram. 4. Interpret fault finding according to service manual. 5. Identify test equipment according faulty audio conference system requirements. 6. Utilize test equipment according to faulty audio conference system requirements. 7. Write report in accordance with faulty and repair procedures. 8. Perform soldering and de-soldering technique according to work procedures. 9. Identify faulty component according to component specification. 10. Replace faulty component according to service report. 11. Identify hand tools according to faulty audio conference system requirement. 12. Identify test equipment according faulty Audio conference system requirement. 13. Operate tool operation according to fault finding. 14. Cleaned, restored and secured in accordance to standard workshop environment (SWE). 15. Practice safety according to work procedure. NO. KOD M11K1 Muka : 01 Drp : 12 KOLEJ VOKASIONAL KUALA KLAWANG KM 3 JALAN TITI KUALA KLAWANG 71600 NEGERI SEMBILAN KERTAS PENERANGAN

Transcript of kertas penerangan

  • KOD NAMA DAN PROGRAM

    ETN 302 AUDIO AND VIDEO MAINTENANCE 2

    TAHAP TAHAP 2 / SEMESTER 3

    NO. DAN TAJUK MODUL

    REPAIR FAULTY AUDIO CONFERENCE SYSTEM

    NO DAN PERNYATAAN TUGASAN

    1. Identify symptom of faulty audio conference system. 2. Locate fault by using necessary test equipment. 3. Replace faulty component. 4. Test for serviceability

    OBJEKTIF PENCAPAIAN AKHIRAN

    1. Explain operation of block diagram and circuit diagram according to service manual.

    2. Explain various types of conference audio system. 3. Identify symptom and fault of audio conference system according

    to circuit diagram. 4. Interpret fault finding according to service manual. 5. Identify test equipment according faulty audio conference system

    requirements. 6. Utilize test equipment according to faulty audio conference

    system requirements. 7. Write report in accordance with faulty and repair procedures. 8. Perform soldering and de-soldering technique according to work

    procedures. 9. Identify faulty component according to component specification. 10. Replace faulty component according to service report. 11. Identify hand tools according to faulty audio conference system

    requirement. 12. Identify test equipment according faulty Audio conference system

    requirement. 13. Operate tool operation according to fault finding. 14. Cleaned, restored and secured in accordance to standard

    workshop environment (SWE). 15. Practice safety according to work procedure.

    NO. KOD M11K1 Muka : 01 Drp : 12

    KOLEJ VOKASIONAL KUALA KLAWANG KM 3 JALAN TITI KUALA KLAWANG 71600 NEGERI SEMBILAN

    KERTAS PENERANGAN

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    TAJUK :

    1. Identify symptom of faulty audio conference system. 2. Locate fault by using necessary test equipment. 3. Replace faulty component. 4. Test for serviceability

    TUJUAN : Murid mesti boleh: 1. Explain operation of block diagram and circuit diagram according to service

    manual. 2. Explain various types of conference audio system. 3. Identify symptom and fault of audio conference system according to circuit

    diagram. 4. Interpret fault finding according to service manual. 5. Identify test equipment according faulty audio conference system

    requirements. 6. Utilize test equipment according to faulty audio conference system

    requirements. 7. Write report in accordance with faulty and repair procedures. 8. Perform soldering and de-soldering technique according to work procedures. 9. Identify faulty component according to component specification. 10. Replace faulty component according to service report. 11. Identify hand tools according to faulty audio conference system requirement. 12. Identify test equipment according faulty Audio conference system

    requirement. 13. Operate tool operation according to fault finding. 14. Cleaned, restored and secured in accordance to standard workshop

    environment (SWE). 15. Practice safety according to work procedure.

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    SISTEM PERSIDANGAN AUDIO (AUDIO CONFERENCE SYSTEM)

    Sistem persidangan audio ialah satu sistem yang digunakan untuk berkomunikasi

    antara satu sama lain secara sokongan peralatan audio bagi memastikan

    persidangan berjalan dengan lancar dan didengari dengan jelas.

    Antara ciri-ciri sistem Main Unit persidangan audio ialah:

    1. Dilengkapi dengan paparan LCD pada panel kawalan pengguna

    2. Sistem Auto Off dimana jika mikrofon dibiarkan on tanpa bercakap ia akan off

    secara automatik dalam masa beberapa saat mengikut jenis dan model

    sistem.

    3. Menyokong beberapa bilangan mikrofon untuk setiap saluran input mikrofon

    mengikut jenis dan model sistem.

    4. Mengikut model-model yang tertentu, kedudukan mikrofon chairman boleh

    dipasang secara rawak.

    5. Menggunakan butang kawalan pengguna digital.

    RAJAH BLOK SISTEM AUDIO PERSIDANGAN

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    UNIT UTAMA (Main Unit) Sistem Audio Persidangan

    Panel belakang Main Unit Audio Conference

    Audio Mixer

    Bekalan Kuasa

    Panel kawalan

    Switch Power ON

    AC 230V In

    1. Fius holder, with 2.5 fuse 2. AC power input jack 3. Earphone output 4. Input for external mickrophones can connect to the other mic 5. System audio source output connect with mixing console n amplify 6. LINE input and output connect with other audio equipments 7. Connector for telephone coupler with two connecting modes 8. Connector for chaiman unit and delegate unit with 3 channel 9. RS-232 connector for extension unit

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    6 5 4 3 8 7 2 9

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    Power supply unit.

    Bekalan elektrik 1 fasa yang dibekalkan di Negara kita adalah dalam bentuk

    voltan AC 240 V/50Hz. Kebanyakan peralatan elektronik memerlukan voltan DC

    untuk berfungsi. Bekala kuasa DC adalah alat yang membekalkan voltan DC.

    Satu unit bekalan kuasa DC mengandungi 4 bahagian utama seperti berikut :

    FUNGSI SETIAP BLOK BEKALAN KUASA DC

    Bil Peringkat Fungsi

    1 Pengubah Menurunkan Voltan AC

    2 Penerus Menukarkan voltan AC ke DC

    3 Penapis Menghasilkan voltan DC tulen

    4 Pengatur voltan Menstabilkan voltan

    Litar bekalan kuasa Audio Conference

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    Alat Ujian mengesan kerosakan peringkat bekalan kuasa

    1. Menggunakan meter pelbagai

    2. Menggunakan osiloskop

    Kerosakan yang sering berlaku

    1. Tiada voltan keluaran

    1. Voltan keluaran rendah

    2. Tiada pengaturan voltan

    Punca kerosakan

    1. Berlaku lampau beban (overload)

    2. Penggunaan yang lama panas

    3. Jangka hayat

    Komponen yang sering rosak

    1. Fius

    2. Diod tetimbang penerus

    3. Perintang siri

    4. Transistor pengatur voltan / IC

    Audio Mixer

    Papan Litar Audio Mixer yang menggunakan komponen elektronik mikro

    Audio Mixer atau pengadun audio di dalam Main Unit Audio Conference

    berfungsi untuk menerima isyarat masukan dari mikrofon perwakilan (Delegate)

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    atau pengerusi (Chairman) dan menghantar balik signal ke pembesar suara

    perwakilan atau pengerusi, ia juga memastikan signal yang masuk melalui setiap

    mikrofon tidak bertindan (conflik) antara satu sama lain. Proses pengadunan ini

    dilakukan secara digital.

    Litar mixer agak complicated untuk dibuat pengujian mahupun membaikpulih

    kerana ia menggunakan komponen-komponen mikro elektronik. Oleh itu

    langkah-langkah penyenggaraan pencegahan (priventive maintenance) adalah

    cara terbaik untuk memastikan litar mixer sentiasa berfungsi dengan baik.

    Penyenggaraan Pencegahan Audio Mixer

    1. Membersihkan permukaan litar mixer supaya tiada habuk

    2. Memastikan kabel Data Bus sentiasa terpasang dengan ketat

    3. Memastikan komponen pelarasan Perintang Trimmer dalam keadaan

    pelarasan yang betul.

    Litar Panel Kawalan

    Litar panel kawalan ialah satu litar kawalan digital yang disediakan untuk

    pengguna mengawal :

    1. Kawalan bahana(volume):

    i. Line Out

    ii Line In

    iii. Unit Speaker

    iv. Unit Mic

    2. Mod Control

    i. Limitation Menghad penggunaan bilangan mikrofon dengan ucapan

    dalam satu masa

    ii. Auto Off Mematikan mikrofon yang hidup tanpa ucapan.

    iii. Extrusion- Mengawal mikrofon yang dilimitkan.

    iv. Music Ada pada butang prioriti mikrofon pengerusi sahaja.

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    Litar panel kawalan juga agak complicated untuk dibuat pengujian mahupun

    membaikpulih kerana ia menggunakan komponen-komponen mikro elektronik.

    Oleh itu langkah-langkah penyenggaraan pencegahan (priventive maintenance)

    adalah cara terbaik untuk memastikan ia sentiasa berfungsi dengan baik.

    Penyenggaraan Pencegahan Panel Kawalan

    1. Membersihkan permukaan papan litar supaya tiada habuk

    2. Memastikan kabel Data Bus sentiasa terpasang dengan ketat

    3. Memastikan skrin dan butang kawalan pengguna sentiasa bersih dan

    tidak berhabuk

    Mikrofon Pengerusi ( Chairman Mic Capsule)

    Mikrofon Chairman digunakan oleh pengerusi untuk mengendalikan mesyuarat

    atau persidangan. Ia mempunyai beberapa kelebihan iaitu mikrofon chairman

    boleh mematikan semua mikrofon perwakilan ( delegate) secara serentak

    dengan menekan butang kawalan Priority. Ia juga mempunyai butang muzik /

    amaran bagi menarik perhatian perwakilan khususnya jika pengerusi ingin

    memulakan ucapan.

    Chairman Unit

    1. Mic capsule : to pick up the voice of the speaker and send to the system to amplify

    2. Mic light loop : to indicate the working condition of the microphone

    3. Mic indicator : when it is light, it means the microphone is on

    4. Mic button : to turn on/ off the microphone

    5. Priority button : to turn off all the delegate unit

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    Mikrofon Delegate Unit

    Rekabentuk mikrofon delegate unit hampir sama dengan mikrofon chairman unit

    kecuali ia tidak mempunyai keupayaan untuk mematikan mikrofon chaiman atau

    delegate kerana ia tidak mempunyai butang priority. Ia juga tidak dilengkapi dengan

    butang muzik.

    Mic capsule : to pick up the voice of the speaker and send to the system to amplify

    Mic light loop : to indicate the working condition of the microphone

    Mic indicator : when it is light, it means the microphone is on

    Mic button : to turn on/ off the microphone

    Mikrofon Delegate Unit

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    Mikrofon Delegate Unit (Binaan Dalaman)

    8 pin DIN connector- T-Cable In

    Speaker

    Mic input

    Mic button On / Off Microphone

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    GESTTON GS-340M / GS-340C / GS-340D

    1. Display window : display the configuration and working condition 2. Configuring buttons for the system functions

    ESC : to go back to the main interface ENTER : to carry out the menu function UP/ DOWN : up and down to select the menu function LEFT/ RIGHT : to config the fonts on the LCD

    3. Power button and indicator POWER : power button (indicator is above the button)

    CIRI-CIRI KESELAMATAN DAN PENJAGAAN ADALAH MERUJUK KEPADA BUKU PANDUAN ( SERVIS MANUAL ) YANG DIBERIKAN. Working temperature : do not use the equipment in the temperature below -10C

    or above 45C, otherwise, it influences the inner components To get the best ventilation, the minimum distance between each equipment

    should be over 20cm The ventilation holes should not be covered by news papers or table cloth etc Do not put the exposed fire on the equipment, such as candles Do not splash any water to the equipment, and keep the equipment away from

    the vase with water to avoid fire or faults Make sure to cut off the power before you install or disconnect the equipment Do not disassemble the equipment to avoid the faults Please use the equipment in the written using conditions (such as temperature,

    humidity, installation direction, enviroment etc) to avoid fire or faults Please use our appointed power and install the equipment according to our

    standard connection to avoid fire or faults Is the danger warning for electronic shock, please leave the connection with

    this icon to the professional technicians or using the ready-made connection.

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    PEMASANGAN SISTEM AUDIO DI BILIK PERSIDANGAN

    PENYAMBUNGAN T KABEL