Video Input/Output Tests - Lexicon RV-8 Service Manual

Signal to Noise Test (SNR):
1. Using the signal levels from step 5 of the Frequency Response Test, turn off the oscillator and verify
a noise level measurement <-105dBr.
2. This procedure should be repeated to test Analog Inputs labeled 2 through 8. To do this, move the
cable from the output of the Low Distortion Oscillator to the next pair of inputs, and repeat the tests
above to test the remaining Main Zone RCA outputs. Repeat the above tests for the remaining Main
Zone amplifier outputs.

VIDEO INPUT/OUTPUT TESTS

These tests will verify that all thirteen video inputs and ten video outputs pass video. There are three
different video paths to be tested in the RV-8: composite, S-video, and component. Composite paths
have five inputs and five outputs. S-video paths have five inputs and four outputs. Component paths have
three inputs and one output. The following tests will verify that the RV-8 is passing clear, undistorted
video. It is not necessary to enter the Extended Diagnostics as was done in the Audio tests.
Composite Video Input to Composite Video Outputs Test
This test will verify the composite video switching function of the RV-8.
Setup:
1. Connect the composite video output from the DVD player to the RV-8's composite video input 1.
2. Connect the first main composite output of the RV-8 to the composite input of the video monitor.
3. Turn on the DVD player, monitor, and the RV-8.
4. The monitor should display a blue screen.
5. Press the remote control MAIN button, then press the DVD1 button to select DVD1 as the input for
testing the video paths.
6. Press the Menu
7. Using the Menu
SETUP menu.
8. The SETUP Menu will appear with INPUTS highlighted.
9. Press the Menu
10. DVD1 will be highlighted.
11. Press the Menu
12. Using the Menu
13. The DVD1 VIDEO IN menu will open and COMPOSITE-1 will be highlighted.
14. Press the Menu
the main composite output of the RV-8.
15. Press the Menu
16. Using the Menu
Menu arrow.
17. The DISPLAY SETUP menu will open with the ON-SCREEN DISPLAY parameter highlighted. Select
it by pressing the Menu
parameter highlighted.
4-22
arrow to display the Main Menu.
arrow button, scroll down to SETUP. Press the Menu
arrow again to open the INPUT SETUP menu.
arrow. The DVD1 INPUT SETUP menu will now be displayed.
arrow, scroll to the VIDEO IN parameter. Select it by pressing the Menu
arrow to select COMPOSITE-1. This will assign the composite -1 video input to
arrow three times to exit to the SETUP menu.
down arrow, scroll down to the DISPLAYS parameter and select it by pressing the
arrow. The ON-SCREEN DISPLAY menu will open with the STATUS
RV-8 Service Manual
arrow to select the
arrow.