American DJ Utopia 250S Special Note: Line Termination., 5-Pin XLR DMX Connectors.

Utopia 250S™ Fuse & Lamp Replacement

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Caution: Always replace with the exact same type lamp and fuse,

unless otherwise specified by an authorized American DJ® technician.

Replace with anything other than the specified part can damage your

unit and will void your manufactures warranty.

Warning: If, after replacing the lamp or fuse eithe r one continues

to blow, STOP using the unit. Contact customer suppor t for further

instructions, you may have to return the unit for servicing. Continuing

to use the unit may cause serious damage.

Fuse Repla cement: D isconnect the unit’s main power supply. Insert

a standard flat head screw driver in to the fuse holder housing. Turn

the screwdriver in counter-clockwise direction to remove t he fuse

holder. Remove the fuse holder to expose the fuse. Remove the old

fuse and discard it. Replace the fuse with the same type. Insert the

fuse holder back into it’s housing and turn it in clockwise direction to

lock the holder in place.

Lamp Replacement: Caution! Never attempt to change the lamp

while the fixture is plugged in. Always disconnect the main power and

allow the unit ample time to cool before attempting to replace the

lamp. Lamp replacement has been made simple by incorporating the

use of a flip-up front cover that is retained by thumb screws.

1. Be sure to follow the proper handling procedures that deal

with halogen lamps.

2. Remove the thumb screw on the top/rear of the unit that holds the

lamp socket assembly cover in place.

3. After removing the thumb screw, slide out the cove from the rear of

the unit to expose the lamp socket assembly.

4. Carefully remove the old lamp and discard it in the trash.

5. Replace the lamp with an exact match and reassemble in reverse

order.

Notice: Be sure to follow ﬁ gures two and three when making your own

cables. Do not use the ground lug on the XLR connector. Do not con-

nect the cable’s shield conductor to the ground lug or allow the shield

conductor to come in contact with the XLR’s outer casing. Grounding

the shield could cause a short circuit and erratic behavior.

Utopia 250S™ Set Up

DMX512 IN

3-PIN XLR

DMX +

DMX -

COMMON

DMX512 OUT

3-PIN XLR

Figure 2

Figure 3

1 Ground 1 Ground

XLR Male Socket XLR Pin Conﬁ guration

3 Hot

2 Cold 2 Cold

3 Hot

XLR Female Socket

Pin 3 = Data True (positive)

Pin 2 = Data Compliment (negative)

Pin 1 = Ground

Special Note: Line Termination.

When longer runs of cable are

used, you may need to use a terminator on the last unit to avoid erratic

behavior. A terminator is a 90-120 ohm 1/4 watt resistor which is con-

nected between pins 2 and 3 of a male XLR connector (DATA + and

DATA -). This unit is inserted in the female XLR connector of the last

unit in your daisy chain to terminate the line. Using a cable terminator

(ADJ part number Z-DMX/T) will decrease the possibilities of erratic

behavior.

Termination reduces signal errors and

avoids signal transmission problems

and interference. It is always advisable

to connect a DMX terminal, (Resistance

120 Ohm 1/4 W) between PIN 2 (DMX-)

and PIN 3 (DMX +) of the last fixture. Figure 4

5-Pin XLR DMX Connectors.

Some manufactures use 5-pin XLR

connectors for DATA transmission in place of 3-pin. 5-pin XLR ﬁ xtures

may be implemented in a 3-pin XLR DMX line. When inserting standard

5-pin XLR connectors in to a 3-pin line a cable adaptor must be used,

these adaptors are readily available at most electric stores. The chart

below details a proper cable conversion.

Conductor 5-Pin XLR Male (In)3-Pin XLR Female (Out)

Pin 1

Do Not Use

Pin 3

Pin 2

Pin 1

Pin 3

Pin 2

Not Used

Data True (+ signal)

Data Compliment (- signal)

Ground/Shield

3-Pin XLR to 5-Pin XLR Conversion

Thumb Screws

Lamp Cover

Lamp Socket

Assembly