One Control OC-LWP-LWPAB Series AB Box Kit Instruction Manual
- May 15, 2024
- ONE CONTROL
Table of Contents
One Control LWP
Series AB Box Kit
OC-LWP-LWPAB Series AB Box Kit
Thank you for purchasing the One Control LWP Series AB Box build-it-yourself
kit.
Before starting production, please be sure to check the parts list and make
sure that there are no missing parts.
In the unlikely event that something is missing, please contact the musical
instrument store where you purchased it.
Parts Checklist:
- 1 x case (pre-drilled)
- 1 x case back cover
- 3 x monaural jack
- 3 x nuts (black)
- 1 x DC input terminal
- 1 x DC input terminal nut
- 1 x Main PCB
- 3 x Jack PCB (marked as MONO)
- 1 x DC input PCB side
- 2 × 4.7K resistors
- 2 x LED
- 1 x foot switch
- 1 x Foot switch nut
- 3 x washers
- 1 x Ground bar (gold and silver combined bar)
- 4 x back cover screws
- 1 x Rubber feet set
You can start to build the AB Box Kit after confirming that there are no
missing parts.
Once production has begun, we may not be able to provide exchanges or returns.
Please make sure that no parts are missing.
In addition, the following tools are required for production:
- Soldering iron, solder, screwdriver, hex wrench, nippers (pliers, etc.)
- Masking tape (if available)
- Solder sucker (for troubleshooting)
Assembling the jack and parts onto the PCB:
Fold the PCB for the jack into three parts and attach each of them to the
jack. Attach the jack to the side with the letters on the board. In this way,
align the protrusion of the jack with the hole on the board and install it.
Now, install the DC jack and DC jack PCB.
Similarly, attach the side marked with to the board according to the correct
shape of the terminal. Solder each of the jack lugs. Solder the three
terminals of the DC jack in the same way. Attach the parts to the main PCB.
Insert all parts from COMPONENT SIDE. First, place the two resistors on the
PCB where it says 4.7K. It doesn’t matter which direction.
The two resistors are both 4.7K, so they can be placed on either side.
Insert the resistor into the PCB as shown in the photo, solder it from the
back side, and cut off the excess lead wire with nippers or pliers. Insert the
footswitch into the PCB hole. The foot switch has a certain orientation, but
insert it in the direction that the foot switch lug fits into the hole in the
PCB.
You can insert it even if the left and right sides are reversed, but there is
no problem either way. Insert the foot switch firmly as far as it will go.
Solder the nine terminals on the footswitch. Next, insert the LED. LEDs are
polarized and have a fixed orientation.
The LED lead wire is longer on one side. Place the longer lead into the square
eyelet of the PCB and the shorter lead into the round eyelet. Two LEDs
inserted.
Do not solder the LED until the end. That means no soldering at this point.
However, the LED may come off and fall while you are working on it. To prevent
the LED from falling, use masking tape to secure the LED lead wires below the
board to make the work easier. This step itself does not have to be performed.
Be careful not to bend the
lead wires by applying too much masking tape. Use two washers for the
footswitch.
Pass the thicker washer through the foot switch first.
- Do not install the thin washers and nuts at this time, as they will be installed later.
Temporary assembly to the casing:
First, assemble the DC input terminal into the housing. Secure the DC input
terminal by passing one washer under the nut. Next, install the three monaural
jacks. At this time, install each PCB so that the protruding part faces
upward. Once the main PCB is placed on it, adjust the protrusions on the PCB
of each jack so that they fit into the holes in the main PCB.
Pass the washer through the foot switch from the outside of the housing and
secure it with a nut. A view of the foot switch section from the outside.
Remove the masking tape from the LED lead wires and adjust the height of the
LED on the main PCB so that the LED appears outside the housing.
Status check!
The PCB for each terminal is firmly sticking out of the hole in the main PCB.
The foot switch and each terminal are temporarily secured with nuts. LEDs are
not soldered.
Assembling the main PCB:
*If there is not enough solder on the parts that are fixed at right
angles between the jack PCB and the main PCB, the power may not be applied
properly.
Apply solder to the extent that the solder penetrates into the eyelet of the
jack side board that protrudes.
Also, be careful not to touch the solder of the adjacent terminal when
soldering. Soldering LEDs does not require a large amount of solder.
Solder it in the same way as the resistor and cut off the excess lead wire.
Solder the intersections of the PCBs as shown in the photo on the left.
At this point, verify that each terminal is energized, the LED is lit, and the
footswitch is working.
It’s a bit noisy as the back is left open and there’s no case shielding, but
that’s fine at this point.
If it does not work or is unstable, the solder may be touching a neighboring
terminal, or the LED lead wire may be touching a neighboring lead wire.
Visually check to see if there are any problems, and if there are still no
problems, remove the solder and check if there are any problems on the
COMPONENT SIDE side.
*When removing the LED, be sure to put it in the correct direction. It is difficult to tell the direction, especially after cutting the lead wires, so put masking tape on one side of the lead wires, etc.
Ground bar:
Install the ground bar. The ground bar connects the board and the case (back
cover) and is used when shielding the case. There is no need to install it if
you do not want to shield the case, such as when using it as an AB box for
speaker cables.
We recommend installing the ground bar when using it between a regular guitar
and a pedal board. First, thread the ground bar through the hole in the main
PCB. Pass the bar until it touches the top of the case, and at that point make
sure that the gold part of the bar is sticking out from the PCB. After
checking, align the back cover and check where the ground bar is on the back
cover. Slightly peel off the paint on the back cover where the ground bar
touches.
You can easily peel it off by using the tip of the ground bar, but if you
apply too much force, the bar will bend, so be careful. There is no problem if
you use tools you already have, such as a flathead screwdriver.
By removing the paint, the ground bar and case will become properly connected.
Solder the ground bar. At this time, do not apply solder to the silver bar.
If there is too much solder, the solder will flow into the gap between the
silver and gold bars and stick, causing the bars to not move. Connect it with
a small amount of solder. After applying the solder, check that the bar moves.
If the bar moves when you press it with your fingers from above, there is no
problem.
All soldering processes are now complete.
Finally, firmly tighten the nuts on each jack and foot switch, attach the back
cover so that the ground bar and the area where the paint was removed match
up, and secure with the screws.
Completion:
A/B BOX is now complete. Please attach the rubber feet to the back cover if you like. When fixing to a board with hook-and-loop fasteners, etc., it will be easier to install without using rubber feet.
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