Mackie 1202-VLZ4 Owner's Manual

1202VLZ4

If you think your 1202VLZ4 has a problem, please

check out the following troubleshooting tips and do  
your best to confirm the problem. Visit the Support  
section of our website (www.720trees.com) where  
you will find lots of useful information such as FAQs  
and other documentation. You may find the answer  
to the problem without having to send your mixer away.

•  Is the mute/alt 3–4 switch in the correct  

position?

•  Is the level knob turned up?
•  Try unplugging any insert devices (channels

1–4 only).

•  Try the same source signal in another channel,

set up exactly like the suspect channel.

•  Is the associated level knob (if any) turned up?
•  If it’s one of the main outs, try unplugging all

the others. For example, if it’s the 1⁄4" left main
out, unplug the RCA and XLR Left outputs. If
the problem goes away, its not the mixer.

•  If it’s a stereo pair, try switching them around.

For example, if a left output is presumed dead,
switch the left and right cords, at the mixer
end. If the problem switches sides, it’s not the
mixer.

•  Turn the channel level and aux return knobs

down, one by one. If the sound disappears, it’s
either that channel or whatever is plugged
into it, so unplug whatever that is. If the noise
disappears, it’s from your whatever.

•  Unplug the power cord and check the fuse.

For warranty service, refer to the warranty  

information on page 27.

Non-warranty service is available at a factory- 

authorized service center. To locate the nearest  
service center, visit www.720trees.com, click “Contact
Tech Support” and select “Locate a Service Center  
or Distributor” [3]. Service for a 1202VLZ4 living  
outside the United States may be obtained through  
local dealers or distributors.

If you do not have access to our website, you can  

call our Tech Support department at 1-800-898-3211,  
Monday-Friday, during normal business hours, Pacific
Time, to explain the problem. Tech Support will tell  
you where the nearest factory-authorized service  
center is located in your area.

The 1202VLZ4 mixer has four female XLR  

inputs. Be sure the cables are wired per AES  
(Audio Engineering Society) standards:

Pin 1 – Shield (Ground) 

Pin 2 – Positive (+ or hot) 

Pin 3 – Negative (– or cold)

SHIELD

COLD

HOT

SHIELD

COLD

HOT

3

2

1