Appendix 2: Built-In Tests; Power-Up Communications Test; Service Tests - Leprecon LM-850 Manual

POWER-UP COMMUNICATIONS TEST

Whenever the LM-850 is powered up, a test of the communications between the main microprocessor (type
8031) and the output microprocessor (type 8052) is automatically performed. If the test is successful, the
screen will briefly display:
LEPRECON LM-850
Version 1.4B
and then the console will automatically enter the Scene mode. If the test fails, the following message is
displayed:
Dimmer Output
Not functional
Press any switch or button to continue. Note that the controls will function properly, but all of the dimmer
outputs will be disabled. If this occurs, the console should be returned to an authorized service center.

SERVICE TESTS

There are other tests which are for use by service technicians for troubleshooting and repair. These tests
are built into the software, and are accessed by holding down the GO button while the power is switched
on. The display will then show:
Test Selection
1)LEDS
The desired test can be selected by entering its number (from 1 through 5) on the numeric keypad. The
choices are:
1: LEDS. The console sequences through all the front panel LEDs.
2: MIDI INT. Connect the MIDI System Out to the MIDI System In with a MIDI cable, and this test
verifies that these ports are working correctly.
3: MIDI DIM. Connect a MIDI Dimmer Out to the MIDI System In with a MIDI cable, and this test verifies
that the MIDI Dimmer Out is working correctly.
4: RAM. This tests the console's battery-backed RAM (Random Access Memory).
5: ROM. This tests the console's ROM (Read Only Memory).
All tests are initiated by pressing the GO button.

APPENDIX 2: BUILT-IN TESTS

G0=Ok