HIKVISION

DS-1663ZJ Ceiling Mounting Bracket Indoor/Outdoor

285.00 جنيه مصري
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Store:  IT
0 out of 5

DS-7616NI-K2/16P

8,799.00 جنيه مصري
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Store:  IT
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DS-7732NI-K4

8,888.00 جنيه مصري
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Store:  IT
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DS-7716NI-I4

8,999.00 جنيه مصري
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Store:  IT
0 out of 5

DS-K1T8003 Series Fingerprint Access Control Terminal

8,097.00 جنيه مصري
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Store:  IT
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DS-K1T605 Series Face ZĞĐŽŐŶŝƟŽŶ Terminal

7,785.00 جنيه مصري
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Store:  IT
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EZVIZ

CS-C1C-D0-1D1WFR Indoor Wi-Fi – CS-C1C-D0-1D1WFR

699.00 جنيه مصري
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Store:  IT
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Ezviz C1C 2 MP 1080 P Indoor Wi-Fi Camera – CS-C1C-D0-1D2WFR

899.00 جنيه مصري
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Store:  IT
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CS-C3A-A0-1C2WPMFBR

3,333.00 جنيه مصري
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Store:  IT
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CS-CV246B0-1C1WFR

1,111.00 جنيه مصري
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Store:  IT
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CS-CV246-A0-1C2WFR

1,299.00 جنيه مصري
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Store:  IT
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CS-CV248-A0-32WFR

1,499.00 جنيه مصري
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Store:  IT
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HiLook

THC-T120-PC 2 MP EXIR Turret Camera

260.00 جنيه مصري
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Store:  IT
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THC-T120-MC 2 MP EXIR Turret Camera

370.00 جنيه مصري
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Store:  IT
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THC-T220-P2 MP EXIR Turret Camera

460.00 جنيه مصري
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Store:  IT
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THC-T220-M 2 MP EXIR Turret Camera

600.00 جنيه مصري
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Store:  IT
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THC-T120-PS

530.00 جنيه مصري
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Store:  IT
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THC-T123-P2 MP EXIR Turret Camera

485.00 جنيه مصري
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Store:  IT
0 out of 5

Dahua

DH-HAC-T1A21

259.00 جنيه مصري
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Store:  IT
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DH-HAC-D1A21

359.00 جنيه مصري
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Store:  IT
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DH-HAC-T2A21

375.00 جنيه مصري
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Store:  IT
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DH-HAC-HDW1220M

400.00 جنيه مصري
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Store:  IT
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DH-HAC-HDW1220SL

619.00 جنيه مصري
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Store:  IT
0 out of 5

DH-HAC-HDW1239TP-LED

849.00 جنيه مصري
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Store:  IT
0 out of 5

Hard Disk

HIKVISION 1TB-WD-Purple-Surveillance-Hard-Drives

900.00 جنيه مصري
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Store:  IT
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2TB WD Purple Surveillance Hard Drives

1,150.00 جنيه مصري
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Store:  IT
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Hikvision HK-HDD4T 4TB Sata Hard Disk Drive Surveillance Grade

2,100.00 جنيه مصري
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Store:  IT
0 out of 5

6TB WD PURPLE Surveillance Hard Drives

3,250.00 جنيه مصري
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Store:  IT
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HDD WD 750G BLUE

350.00 جنيه مصري
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Store:  PRG
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H.D.D 1TB WD PURPLE

937.00 جنيه مصري
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Store:  IT
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DS-3E0105D-E 10/100 Mbps Ethernet Switch

159.00 جنيه مصري
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Store:  IT
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DS-3E0108D-E 10/100 Mbps Ethernet Switch

209.00 جنيه مصري
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Store:  IT
0 out of 5

DS-3E0105P-E 4-ports 100Mbps Unmanaged PoE Switch

1,169.00 جنيه مصري
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Store:  IT
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DS-3E0109P-E 8-ports 100Mbps Unmanaged PoE Switch

2,929.00 جنيه مصري
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Store:  IT
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DS-3E0318P-E 16-Port 100 Mbps Unmanaged PoE Switch

6,979.00 جنيه مصري
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Store:  IT
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Switch Cisco 24 port SG112-24

2,429.00 جنيه مصري
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Store:  Alarabia Group
0 out of 5

RECEIPT PRINTER

Alfa AU300i

1,700.00 جنيه مصري
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Store:  IT
0 out of 5

Alfa 80250 ivn

1,600.00 جنيه مصري
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Store:  IT
0 out of 5

Alfa Ac 250 I ( Compact Printer )

1,100.00 جنيه مصري
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Store:  IT
0 out of 5

Alfa AL 180 ii

1,300.00 جنيه مصري
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Store:  IT
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Alfa AC-180 i

900.00 جنيه مصري
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Store:  IT
0 out of 5

Label Printers

Alfa (B-555)

1,300.00 جنيه مصري
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Store:  IT
0 out of 5

Alfa (B-777)

1,500.00 جنيه مصري
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Store:  IT
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سكانر باركود

Alfa 500 -2D

800.00 جنيه مصري
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Store:  IT
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Alfa 1500g – A

550.00 جنيه مصري
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Store:  IT
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Alfa 1500g – M

500.00 جنيه مصري
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Store:  IT
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Voltage-Regulator-Module-VRM-and-Enterprise-Voltage-Regulator-Down-EVRD-10.0-Design-Guidelines_page1_image1
Laptop

R

Voltage Regulator Module (VRM) and Enterprise Voltage Regulator-Down (EVRD) 10.0 Design Guidelines July 2005 Document Number: 302731-002 None None VRM and EVRD 10.0 Design Guidelines R INFORMATION IN THIS DOCUMENT IS PROVIDED IN CONNECTION WITH INTEL® PRODUCTS. NO LICENSE, EXPRESS

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trouble1_page1_image1
Laptop

Basic circuit troubleshooting

This worksheet and all related files are licensed under the Creative Commons Attribution License, version 1.0. To view a copy of this license, visit http://creativecommons.org/licenses/by/1.0/, or send a letter to Creative Commons, 559 Nathan Abbott Way, Stanford, California 94305, USA.

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Repairing-Apple-iMac-G5-Motherboard_page1_image1
Laptop

2010/01/13

Apple iMac G5 Motherboards DIY Repairs How to Guide Help please, my beautiful Apple iMac G5 Computer is broken. Click Here to Buy Capacitors. Purchase high quality, low ESR, mother board grade, long life, high temperature rated capacitors for your

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mb_page1_image1
Laptop

主板维修思路

首先主板的维修原则是先简后繁,先软后硬,先局部后具体到某元器件。 一.常用的维修方法: 1. 询问法:询问用户主板在出现故障前的状况以及所工作的状态?询问是由什么原因造 成的故障?询问故障主板工作在何种环境中等等。 2. 目测法:接到用户的主板后,一定要用目测法观察主板上的电容是否有鼓包、漏液或 严重损坏,是否有被烧焦的芯片及电子元器件,以及少电子元器件或者PCB 板断线 等。还有各插槽有无明显损坏。 3. 电阻测量法:也叫对地测量阻值法。可以用测量阴值大小的方法来大致判断芯片以及 电子元器件的好坏,以及判断电路的严重短路和断路的情况。如:用二极管档测量晶 体管是否有严重短路、断路情况来判断其好坏,或者对ISA插槽对地的阻值来判断南 桥好坏情况等。 4. 电压测量法:主要是通过测量电压,然后与正常主板的测试点比较,找出有差异的测 试点,最后顺着测试点的线路(跑电路)最终找到出故障的元件,更换元件。 二.主板维修的步骤: 1. 首先用电阻测量法,测量电源、接口的 5V、12V、3.3V 等对地电阻,如果没有对地 短路,再进行下一步的工作。 2. 加电(接上电源接口,然后按POWER开关)看是否能开机,若不能开机,修开机电 路,若能开机再进行下一步工作。 3. 测试 CPU 主供电、核心电压、只要 CPU 主供电不超过 2.0V,就可以加 CPU(前提 是目测时主板上没有电容鼓包、漏液),同时把主板上外频和倍频跳线跳好(最好看 一下CMOS),看看CPU是否能工作到C,或者D3(C1或D3为测试卡代码,表示 CPU已经工作),如果不工作进行下一步。 4. 暂时把CPU取下,加上假负载,严格按照资料上的测试点,测试各项供电是否正常。

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ezviz
hik
hilook
imuo 135
it
prg
seagate
wd
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