Kamis, 11 November 2010

Do repair and setting to repeat network connection


Do repair and setting to repeat network connection

1) connection repair preparation in network with bus topology

Be physical topology that uses cable coaxial with
use t-connector with minator 50 ohm at the end of
network. bus topology uses one the end second cable
closed with along cable found node.
bus topology characteristics:
- be one the end second cable is closed where
  along cable found node.
- most prevevalent because simple in installation
- signal merewati 2 directions with one possibility cables happens
  collision (data collision or campurnya data).
- biggest troubleshoot if happens to broken off or spacious in wrong
  one konektor so entire networks will stop
- bus topology where signal accepted and transmission line
sent in every tool/device that continued in one line
straight (cable), signal only be caught by tool that aimed,
while another tool not aim ignore signal
/only be passed by signal

 








picture 1 network with bus topology





preparation that with prepare the device. device or ingredient that wanted for network
with bus topology :


a) network card (network interfaces card/ lan card)

a network card (lan card) pair in slot
expansion in a motherboard also server computer
workstation (client) so that computer can related to into
network system. seen from kind interface- in pc found
          two kinds that is pci and isa
                                     
a)                                                                     b)






a)    network card (lan card) ISA with konektor BNC and RJ45
b)   network card (lan card) ISA with konektor BNC














b) cable and connector

cable that used for network with bus topology use cable coaxial. cable coaxial prepare
good enough protection from cross talcum powder (caused electricity field and phase signal) and electical inteference (come from thunder, motor
and radio system) because found a kind of patron metal/metal in cable.
cable kind coaxial mengantaranya television cable (antenna cable), thick
coaxial and thin coaxial transfer speed rate data maximum 10
mbps.
cable coaxial or cable rg-58 or cable 10base2 (ten base two)
has reach between 300 m and can achieve on 300m
by using repeater. to serve the purpose of
network cable must fulfil standard ieee 802.3 10base2,
with average diameter revolves 5 mm and usually coloured dark.

 

                                                                                       








picture 3. kind cable coaxial or rg-58/bnc








Connector that used in bus topology network by using konektor bnc. konektor bnc there 3 kinds that is:

a) CONNECTOR BNC
konektor bnc that installed in cable ends coaxial.

b) MINATOR BNC
konektor bnc installed in network ends with bus topology that has obstacle value 50 ohm.

c) TBNC
konektor that related to network card (lan card) and to konektor bnc and or to minator for end network.



                 

Mengatasi Masalah Pada CD/DVD/ROM/RW

Mengatasi Masalah Pada CD/DVD/ROM/RW

Masalah BIOS

Masalah BIOS

Mengatasi Masalah Pada CD/DVD/ROM/RW

Mengatasi Masalah Pada CD/DVD/ROM/RW

Gejala : Jenis kerusakan yang biasa ditemui :

1. Tidak terdeteksi di windows

2. Tidak bisa keluar masuk CD

3. Tidak bisa membaca/menulis/hanya bisa membaca saja. (CD)

4. Tidak bisa membaca/menulis/write protect (Floppy disk)

Solusi :

1. Periksa kabel data dan kabel tegangan yang masuk ke CD-floppy, perikas di setup bios apakah sudah dideteksi? sebaiknya diset auto. Periksa apakah led menyala, jika tidak kerusakan di Controllernya.

2. Kerusakan ada pada mekanik motor atau karet motor.

3. Kerusakan Biasanya pada optik, tetapi ada kemungkinan masih bisa diperbaiki dengan cara men-set ualng optik tersebut.

4. Head Kotor, bisa dibersihkan menggunakan Cutenbud

(langkah-langkah diatas secara lengkap dapat anda temukan di e-book "Metode perbaikan komputer cepat dan akurat" dan bisa anda dapatkan jika anda bergabung menjadi member perbaikankomputer.com

Masalah Pada Power Supply

Masalah Pada Power Supply

Masalah Pada Harddisk

Masalah Pada Harddisk