Mackie SWA1801Z Istruzioni operative

SWA1801z REPAIR MANUAL

ACTIVE

These instructions are intended to help restore any ailing SWA1801z Active

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

replace the woofer and ampliﬁer 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 #0016875 pages 7-9

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 the front panel as

the cable is still attached to the led PCB

assembly.

Keep the 20 screws and washers in a

safe place. 4

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 the led PCB assembly

from the back side of the front panel. A

ﬂathead screwdriver may aid in removal

of the led PCB assembly if it is sticking.

Use the phillips head screwdriver to

remove one screw from the center of the

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

SWA1801z 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 the 5mm allen wrench.

Keep the eight screws in a safe place.

Carefully begin to remove the woofer. A

ﬂathead screwdriver may aid in removal

of woofer if it is sticking.

Caution: The woofer is approximately 27

pounds with weight unevenly distributed.

*This picture was taken during an SWA1501 woofer repair. The same

principle applies to the SWA1801z.

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

the 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 the woofer. Power up the

SWA1801z and the new woofer should

now be pumping out glorious lows.

Awesome, you just replaced an 18”

woofer!

Push

Positive (solid yellow) and negative

(yellow and black) cables are still

attached to woofer terminals.

*This picture was taken during an SWA1501 woofer repair. The same

principle applies to the SWA1801z.

Amp Assembly replacement:

Last remaining two screws located on

the bottom of the SWA1801z.

Two screws located on the top of the

SWA1801z patiently awaiting removal.

Four screws need to be removed from

the ampliﬁer assembly using a 5mm

allen wrench. The screws are located

at the top and bottom of the SWA1801z

(see following pictures and further

instructions).

Keep the four screws in a safe place.

Three cables need to be removed from

the ampliﬁer assembly: (1) negative

(yellow and black) cable, (2) positive

(solid yellow) cable, and (3) led PCB

cable. Do not force cable removal or

connection, although needle-nose pliers

may aid in gently removing the woofer

cables. Notice their placement, as well

(see following 3 pictures).

Amp assembly replacement continued:

It may be easier to remove the ampliﬁer

assembly if the cabinet is on its side. Do

not completely remove the ampliﬁer

assembly yet, as the cables need to be

removed ﬁrst.

Caution: The ampliﬁer assembly is

approximately 23 pounds, so please

make sure to grasp it ﬁrmly.

Side

view

Bottom

view

6a The terminal for the negative (yellow and

black) woofer cable is located towards

the bottom of the ampliﬁer assembly,

close to the transformer. The cable must

be attached to the same terminal it was

removed from. Failure to do so will result

in greatly reduced power.

6b The terminal for the positive (solid yellow)

woofer cable is located near the center

of the ampliﬁer assembly, just above

the four capacitors (dotted above). The

cable must be attached to the same

terminal it was removed from. Failure

to do so will result in greatly reduced

power.

Top of ampliﬁer

assembly

Bottom of ampliﬁer

assembly

Bottom of ampliﬁer

assembly

Top of ampliﬁer

assembly

No Yes

Place the new ampliﬁer assembly

(part #0016875) where the old one

was. Follow the same steps as above,

but backwards 6 to 1. Remove the

serial number from the faulty ampliﬁer

assembly (as shown in picture above)

and place on the new ampliﬁer

assembly. Power up the SWA1801z and

relish in the fact that you just replaced

an ampliﬁer assembly. Hats off to you for

a job well done!

8Important:The faulty ampliﬁer

assembly needs to be returned to LOUD

Technologies. The address should

be on the return shipping label that

was provided with the new ampliﬁer

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.

Amp assembly replacement continued:

6c The led pcb cable attaches to the

connector (as shown in picture above)

with the white cable closest to the edge

of the ampliﬁer assembly.

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