Mackie SWA1801 Istruzioni operative

SWA1801 REPAIR MANUAL

ACTIVE

These instructions are intended to help restore any ailing SWA1801 Active

Subwoofer back to factory working conditions. They show how to remove and

replace the woofer and amp assembly.

Please contact Mackie Tech Support (1-800-898-3211) to receive a Service

Request Number and Order Number for parts needed for this restoration. They will

also help you determine the nature of the problem and what parts will repair the unit.

Tools needed:

***NOTE: not all tools listed below will be needed for your repair***

• Phillips head screwdriver.

• 5mm allen wrench.

• Solid workbench.

• Non-carpeted work area due to static electricity. If available, an ESD mat

(Electro-static discharge) is optimal.

Parts needed:

***NOTE: not all parts listed below will be needed for your repair***

• Led PCB Assembly Part #0007334 pages 3-4

• 18” Woofer Part #0012184 pages 5-6

• Ampliﬁer Assembly Part #0005687 pages 7-8

Safety Warnings:

• Make sure that you turn off the unit and disconnect the power cord (and all

other cords) before you begin these procedures.

• Always use safety glasses!

• Please try NOT to touch any of the pcb circuitry, capacitors, resistors, etc.

• Take care to read and follow these instructions. It may help to read the

instructions prior to the repair to get an idea of what it entails.

• Before beginning the repair, touch metal to discharge any lingering internal

static electricity.

Led PCB replacement:

Carefully begin to remove the front

panel. The wave guides are a great

place to grip for stability and support. Do

not fully remove front panel as the cable

is still attached to the led PCB assembly.

Keep the 20 screws and washers in a

safe place.

Carefully remove the cable attached to

the led PCB assembly.

Twenty screws need to be removed from

the front panel using the phillips head

screwdriver.

12 34

11121314

Carefully remove led PCB assembly from

back side of front panel. A ﬂathead

screwdriver may aid in removal of led

PCB assembly if it is sticking.

Use phillips head screwdriver to remove

one screw from center of led PCB

assembly.

The hard part is done, the rest is easy!

Place new led PCB assembly (part

#0007334) where the old one was. Follow

the same steps as above, but backwards

6 to 1. Power up the SWA1801 and led

should light up. Congratulations, you just

replaced an led PCB assembly...now go

play some shows!

Led PCB replacement continued:

Woofer replacement:

Follow steps 1-4 of led PCB replacement,

as the front panel will need to be

removed in order to access the woofer.

Eight screws need to be removed from

the woofer using 5mm allen wrench.

Keep the eight screws in a safe place.

Carefully begin to remove the woofer.

Caution: woofer is approximately 27

pounds with weight unevenly distributed.

Positive (solid yellow) and negative

(yellow and black) cables are still

attached to woofer terminals.

These two pictures were taken during an SWA1501 woofer repair.

Same principle applies to the SWA1801.

Woofer replacement continued:

Remove cables from terminals simply by

pushing down on terminal and pulling

out cable.

This is what it looks like with the front

panel and woofer both removed. Place

new woofer (part #0012184) where the

old one was. Follow the same steps as

above, but backwards 6 to 1, making

sure to keep the led PCB assembly cable

in front of woofer. Power up the SWA1801

and the new woofer should now be

pumping out glorious lows. Awesome,

you just replaced an 18” woofer!

Push

Amp Assembly replacement:

Last remaining two screws located on

the bottom of the SWA1801.

Two screws located on the top of the

SWA1801 patiently awaiting removal.

Four screws need to be removed from

the amp assembly using a 5mm allen

wrench. The screws are located at

the top and bottom of the SWA1801

(see following pictures and further

instructions).

Keep the four screws in a safe place.

Place the new amp assembly (part

#0005687) where the old one was. Follow

the same steps as above, but backwards

6 to 1. Remove the serial number from

the faulty amp assembly (as shown in

picture above) and place on the new

amp assembly. Power up the SWA1801

and relish in the fact that you just

replaced an amp assembly. Hats off to

you for a job well done!

Two cables need to be removed from

the amp assembly: (1) woofer cable

(positive and negative cables on one

connector) and (2) led PCB cable. Do

not force cable removal or connection.

Notice their placement, as well -- black

wire of led PCB cable and yellow and

black woofer cable are both closer

towards the edge of the amp assembly.

Amp assembly replacement continued:

It may be easier to remove the amp

assembly if the cabinet is on its side. Do

not completely remove amp assembly

yet, as cables need to be removed ﬁrst.

Caution: amp assembly is approximately

20 pounds, so please make sure to grasp

it ﬁrmly.

8Important:The faulty ampliﬁer

assembly must be returned to LOUD

Technologies. The address should be

on the return shipping label that was

provided with the new amp assembly.

If not, the return address is at the top of

this page. Also, please write the order

number and service request number

(ex: 1046256-1203935) in big, black, bold

numbers on the outside of the box. This

helps expedite the return.

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