UL WarningAbout Jumpers
CAUTION! These modi-We recommend solid (non-stranded) wire,
fication instructions are26�28 gauge (wire-wrapping variety). When in-
for use by qualified per-stalling jumpers, do not run their ends through
sonnel only. To avoidholes in the circuit board. Rather, solder them flat
electric shock, do not perform any servicingagainst the desired pad (the flat silver area, possi-
other than changing the fuse unless youbly with a hole in the middle). Make sure the ends
are qualified to do so. Refer all servicingof these flat wires do not extend beyond the pad.
and modifying to qualified personnel.
1604-VLZ PRO Source Mod
Mackie Disclaimer
This changes the CTL ROOM/PHONES level
Any modification of any Mackie Designs prod-control in the SOURCE matrix to receive the
uct must be performed by a competent electronicmain mix stereo signal pre-MAIN MIX fader in-
technician. Mackie Designs accepts no responsi-stead of post-MAIN MIX fader.
bility for any damages or injuries caused by anyYou can accomplish the same result that this
modification, regardless of the source of the modi-modification provides by using two standard 1�4"
fication instructions or the qualifications of thetip-sleeve Ojumper cables� plugged into the MAIN
technician performing them. In the case of suchINSERT (L and R) to the first click and the other
damages, Mackie Designs may declare warrantyend plugged into STEREO AUX RETURN 4,
privileges void. BE CAREFUL!assigned to C-R/PHNS ONLY. STEREO AUX
RETURN 4 level will control the volume as well as
Jumper
BEFORECTL ROOM/PHONES level control.
You can also use the TAPE INPUT (L and R)
HolesRCA jacks (you will need 1�4" to RCA cables or
adapters) and assign the TAPE source button in
AFTERSolder
the SOURCE matrix.
1. Remove all cords, including the power cable,
from the 1604-VLZ PRO.
2. Undo the PHONES nut.
3. Place the mixer upside-down on a dry, non-
marring surface.
4. If you have converted your mixer to the rack-
mount position or have installed a RotoPod,
undo those changes and temporarily configure
the mixer in the original desktop mode. You do
not have to install the pod, just get it out of the
way of the bottom cover.
5. Remove the screws that attach the bottom
cover. Keep track of what screws go where.
Remove the bottom cover.
6. Move the PHONES board to one side so you can
get to points YL and YR marked on the board.
JUMPERS
7. Cut the conductor at points ZL and ZR,
HERE
between the square and round pads. Be
8careful to cut all the way through the conduc-
tor, and do no cut any nearby traces.
8. Add a jumper from the square pad at point YL
to the square pad at point ZL and another
CUT
from the square pad at point YR to the square
HERE
pad at point ZR.
9. Check your work very carefully, then put the
7
Phono board and nut, and bottom cover back
the way you found them. YouOre done!
29 |
ACEC
