LEXICON LXP 1 MANUAL PDF

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LXP -1 Owner’s Manual. 1. Installing the LXP Specifications. The following specifications are subject to change without notice. Frequency Response. View and Download LEXICON LXP-1 owner’s manual online. Multi-effect processing module. LXP-1 Recording Equipment pdf manual download. Lexicon LXP-1 Pdf User Manuals. View online or download Lexicon LXP-1 Owner’s Manual, Manual.

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If the unit is exposed to elxicon dusty environment, a vacuum or low-pressure blower may be used to remove dust from the LXP-1 exterior. The last operation is the storage of zeros in all locations. The audio output current from the Pre-Emphasis circuit develops a voltage across storage capacitor C This is the heartbeat interrupt for the software operating system.

It operates identically to the RAM test on Position 2. This insures that the Z80 is the last device enabled and that all other devices will be in an active known state lexiocn Z80 Reset is removed. A data value is latched into conversion latch. This voltage level will be stored by the storage cap until the next output sample is applied. The circuit board slides out of the box with the front panel attached.

The success signal manusl that the RAM passed the diagnostic test and that zeros have been stored in all memory locations. Under normal power on conditions, Q5 will conduct, maintaining an active high on CE2. Apply a 1 kHz signal at dBV 32mVrms to right channel input. Word Clock pin 59 is used as a clock reference by the LXP R2 and C4 provide this power up Reset delay.

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LEXICON LXP-1 Owner’s Manual

The combination is as follows: If the two differ, a failure will result, indicating that a RAM storage failure may have occurred. Turning the knob clockwise will increment the position number by one. The front panel lexlcon button and Program select switch are exercised thoughout the diagnostic testing.

Audio input cable from Low Distortion Oscillator output toright channel input 2. This test program will run continuously until another function is selected.

Position 1 3 CHORUS 2 Loads a program which tests the specifications of the converter circuitry by Audio Test mode producing a digitally processed output signal which is identical to the input signal. DAC output is compared to analog input by the comparator.

Do not use alcohol, benzene or acetone-based cleaners or any strong commercial cleaners. The user control manula the wiper position of R39 in order to control the percentage of Wet processed and Dry unprocessed signals on LXP-1 outputs.

FB3 and Cl 1 provide filtering from noise spikes emanating from the AC line. The output voltage from U22 is either deglitched and applied to audio output circuitry, or compared to sampled input level by the comparator U23 for analog to digital conversion.

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If diagnostics cannot be selected and manuual proj? Used also to indicate results of diagnostic tests or per- formance of internal MIDI button and status Indicator.

When this procedure has been completed the test may be executed.

Full text of “Lexicon: lexicon lxp 1 sm”

Accepts power from the supplied power pack. First, however, it is coupled into U32, a 15kHz low pass filter. This will cause all converter logic curcuitry to freeze, resulting in no wet output signal. Every nine clock pulses, RCO pin 15 will go high in order to force an interrupt routine on the Z80 processor.

Input impedance is 50 kilohms in stereo, and 25 kilohms in mono. Audio output cable from right channel output to Level Meter input 4.

Acceptable output level llxp measure between This test takes approximately 5 seconds and the results will be displayed immediately upon completion. Avoid using abrasive materials such as steel wool or metal polish. Check for loose ICs, damaged jacks and controls, overheated or burnt parts and damaged PC board traces.