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RJ-45 Color Codes

BrownNot used8

White & BrownNot used7OrangeReceive -6

White & BlueNot used5

BlueNot used4

White & OrangeReceive +3

GreenTransmit -2

White & GreenTransmit +1

ColorUsePin #

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TROUBLESHOOTING TECHNIQUES

If a user says they cant get on the network, it must be determined whathappened. Troubleshooting involves asking many questions that will helppinpoint the cause of the problem. Pertaining to cables-Is the cable

plugged in at both ends? Is there a light on the Dongle? Was the cableplugged in before the machine was booted?

Obviously the determination is concerned with the root of theproblem. Is the problem occurring because of user error, cable failure, orequipment/software failure.

Suspecting the cable would lead to a visual inspection of the cableand the end connectors. You would look for wires that were not pushed farenough into the RJ45 to make contact, or had crossed. If those appear tobe sound, the next step is using an electronic tester. If the cable passesthen check the connections the cable plugs into.

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REPAIR TECHNIQUES

The Steps to Rebuilding a CAT 5 Cable

1. Inspect the cable and determine the problem

2. Cut off the damaged section

3. Cut away the sheathing

4. Separate the pairs by colors

5. Align the wires in the proper pattern

6. Hold the wires in place between thumb and forefinger

7. Cut the wires evenly across

8. Push the wires into the RJ45

9. Inspect the clip to make sure the wires are fully inserted

10. Crimp and Test

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REQUIRED TOOLS

Crimp Tool

Punch-Down Tool

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INSPECT THE CABLE

Look at the cable fordefects. What you willusually see with

cables undergoingmany insertions willbe a broken top clip.This will prevent thecable from remaining

secured in the jack.

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Cut Off the Unwanted Section

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Cut the Sheathing Back About One Inch

Very carefully cut the blue sheathing back about 0ne

inch. Be careful not to cut into the inside wires.

The sheathing can usually be twisted off if the cutdoes not separate the pieces. This is actuallypreferable to cutting too deeply and cutting the

wires.

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Separate The Wires by Pairs

There are fourpairs in the cable.

Separate each pairwithout separatingthe individualwires.

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Straight Through Cable Wiring

RJ45 Pin # Color (Both Sides I dent ical)

Pin 1 White With Orange

Pin 2 Orange

Pin 3 White With Green

Pin 4 Blue

Pin 5 White With Blue

Pin 6 Green

Pin 7 White With Brown

Pin 8 Brown

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Cross Over Cable Wiring

RJ45 Pin # 1 Sides Color 2 Side Color

Pin 1 White With Orange White With Green

Pin 2 Orange Green

Pin 3 White With Green White With Orange

Pin 4 Blue Blue

Pin 5 White With Blue White With Blue

Pin 6 Green Orange

Pin 7 White With Brown White With Brown

Pin 8 Brown Brown

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Align the Individual Wires into the568A Pattern

Align the wires intothe 568A pattern.

Green- Whit e

Green

Orange-White

Blue

Blue-White

Orange

Brown-White

Brown

8-BR

7-BRW

6-OR

5-BLW

4-BL

3-ORW

2-GR

1-GRW

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THE 568-B PATTERN

Align the wiresinto the 568Bpattern.

Orange- WhiteOrange

Green- Whit e

Blue

Blue-White

Green

Brown-White

Brown

8-BR

7-BRW

6-GR5-BLW

4-BL

3-GW

2-O

1-OW

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Firmly Grip Wires

Hold the wires firmly between thethumb and forefinger, maintaining

the proper pattern.

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Cut The Wires Evenly

Cut the wiresevenly across alleight wiressimultaneouslywhile maintaininga firm grip, do notrelease the wires.

The cut shouldleave about 3/4 ofan inch of wireexposed.

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Insertion into the RJ45

Maintain the firm grip on

the wires and slowly easethe array of wires into theRJ45 clip.The clip partshould be on top and the#1 wire should be on theleft.( Front reference )

Closely observe to makecertain all wires are beingpushed completely to thefront of the clip, no wires

are crossed, and thecorrect pattern isinstalled.

# 1Wire

TOP of CLIP

FRONT

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Check Cable Wires for Proper Insertion

Check toinsure all

wires areinsertedcompletely tothe front of

the RJ45connector.

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Crimp the RJ45

Hold the cable andRJ45 while insertingthe clip into a

crimping tool. Use astrong and measuredsqueeze to makecertain the pins areall pushed down into

the wires. Failure topush the connectorsall the way into thewires will result in adefective cable.