only. Possession does not imply or convey rights to use any information herein. This information
is proprietary, and may relate to patents or patents pending that are the property of CAE, Inc.
other than the use of products manufactured by CAE, Inc.
THE LP 250 SERIES OPERATIONAL INSTRUCTION BOOKLET
The LP 250 series includes the LP-250 6 channel and the LP-255 12 channel analog
lighting controller. The controls on these single scene control boards can be broken into
5 basic sections.
The 250 series has a 6 channel chase, a bump system that can change the existing look
on stage momentarily, an output trim section, a master section and an individual channel
adjustment section.
This controller uses a power source of 105-125 VAC 50-60 HZ. Its output is a variable
DC voltage (0-10V nominal) from each channel.
POWER UP
To engage or disengage the controller simply push the rocker switch marked “on”. The
green LED marked “power”, located beneath the switch, will be glowing.
If the LED is not glowing, recheck your power cord and be sure the outlet that you are
using is operational. If the outlet is operational and the power LED and work lamp are
not working, you may have an open fuse. The fuse is located inside the controller and is
mounted on the circuit board. Refer service to qualified personnel.
TRIM ADJUSTMENT
Under the “power” LED you will notice another green LED marked “max”. This LED’s
brightness is directly related to the maximum output trim. The factory trim adjustment is
10 volts, and is adjusted by the recessed trim pot located next to the LED.
Under the “max” trim control is another recessed control for the minimum output voltage,
this is marked “min” and is factory adjusted to zero volts.
Do not readjust trim unless there is a reason for the adjustment, such as the
implementation of another brand of dimmer. Do this only with a volt meter connected to
the output of the controller. We will cover the procedure for trim adjustment later on in
more detail.
CHASER
The chaser has two control faders and switches located on the front panel next to the
power section.
This is a straight 6 channel chase operating in a sequence of 1-2-3-4-5-6 only. There is
a yellow chase LED to indicate the speed you have selected for the chase.
The chase “on/off” switch is a rocker switch that turns the chase function on or off.
Chase level fades the chase up and down and chase rate adjusts the rate of stepping, or
speed of the chase.
BUMP
At the bottom left of the controller are the switches for the bump button modes. This
section has two selector switches with corresponding yellow LED’s. These switches
allow the operator to use the bump buttons located beneath each of the controller
channels to achieve different results.
The switch marked “on/off” is the bump enable switch. The yellow LED will be glowing
when this switch is on. If you want you may deactivate the bumps so accidental channel
bumps will be avoided.
Above the “on/off” switch is the “solo/add” switch. When pressing a channel’s bump
button, while in the “add” mode, that channel will be bumped to full intensity. The bump
button will “add” that channel to the existing look on stage; it will not effect the scene
setup in any other way.
When the “solo/add” switch is in the “solo” position the yellow LED will glow whenever a
bump button is depressed. The channel will bump to full intensity and the controller will
black out all of the channels that are in the “X” and “Y” scenes. But not independent and
chase. This effect will last only as long as the bump button is depressed. When the
bump button is released the scene will then return to its normal preset condition.
HINTS: When the “solo” feature is activated only that channel will appear. You may
rearrange channels while the bump button is depressed then return to a new stage look.
This will give the effect of very fast scene changes with a minimum of fader work. The
chaser bump button can be used to momentarily solo a change in place of a scene, or
add the chase to the scene.
MASTER
The “master” section is to the right of the bump section. (See figure D) The green LED
above the Master Fader lets you know the intensity of the “Master” fader. This fader
determines the maximum intensity of all six channels in the LP-250 and all 12 channels
in the LP-255. The independent fader determines the maximum level of any channel set
to independent.
CONTROL CHANNELS
The control section is at the right of the board. This section contains the individual
channel faders, the “M/I” switches, the bump buttons and output LEDs.
The brightness of output LEDs located at the top is directly related to each channel’s
output. The momentary switches at the bottom of each channel are for the bump button
operations.
TRIM
To adjust the trim of any LEPRECON controller you need a volt meter and a small flat
blade screwdriver. First determine which pin is common with your controller.
The LP-250 has one 8 pin male jones output connector. Channels 1-6 are Pins 1 thru 6,
Pin 7 has a 28 volt DC supply and the common pin is number 8.
On the LP-255 there are two 8 pin jones connectors. The first connector has channels
1-6 on pins 1-6. The second connector has channels 7-12 on pins 1-6. Pin 7 has 28
volts DC on both connectors. Pin 8 is common.
With your volt meter’s negative lead connected to the controller’s common pin and the
positive lead connected to channel number One, raise all channels to maximum. With
all channels up adjust the “max” trim to the desired level. Factory adjustment is 10 volts.
To adjust the minimum voltage, bring only channel One down. (All other channels must
remain at maximum output.) With the screwdriver in the “min” pot adjust the output
voltage to desired minimum. (Factory adjust is “0” volts.) Once the trim has been
adjusted it should not need to be readjusted unless dimmers with different trim
requirements have been introduced.
LP 250 PARTS LIST
DESCRIPTION PART CAE ORDER NUMBER
RESISTORS-----------------------------------------------------------------------------------