Lexicon MC-1, Service Manual

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Lexicon
4-5
Tests
1. With the audio source playing, slowly increase the volume level on the amplifier to a comfortable
listening level and verify that the outputs are free from noise, distortion or any other audio anomalies.
2. To test the remaining 7 digital inputs, the following button pushes must be done to make a complete
digital input to analog output test path. Each selection below shows the digital input the button that
activates and the number that will appear in the display to confirm the path is set.
THX = Coax 2, # 21 Logic 7 = Coax 3, # 22 DTS = Coax 4, # 23 2 CH = Coax 5, # 24
Party = Optical 1,# 25 TV M = Optical 2, # 26 Music = Optical 3, # 27
3. Once all of the digital inputs are tested, press and hold the SHIFT button, then press DONE. This will exit
the Extended Diagnostics tests.
Video Input / Output Tests
These tests will verify that all 16 video inputs (8 composite / 8 S-Video inputs) pass video to the 6 video
outputs (3 composite / 3 S-Video).
Composite Input to Composite Monitor / Records (1 and 2) Outputs Tests
Setup
1. Connect the Composite video output from the DVD player to the MC-1 VCR Composite video input.
2. Connect the Composite video Monitor output of the MC-1 to the video display's Monitor Composite
video input.
3. Place the MC-1 into Extended Diagnostics mode by applying power to the MC-1 while pressing and
holding down both the REC/ZONE2 and EFFECT buttons on the front panel until Extended Diagnostics
appears n the display.
4. Press the TV button on the remote to select the VIDEO Test. Press and hold Shift, then press the ON
button. This will set the MC-1 to except an external video source for testing.
5. Turn on the video source and monitor.
Tests
1. To test the VCR Composite input to Video Monitor Composite output path, press the VCR button on the
remote. The # 13 will appear next to the Video Test message on the display, this indicates the path has
been set.
2. Press Play on the video source.
3. Verify a clear, undistorted picture appears on the monitor.
4. Pause the video source.
5. Move the Composite video input from the VCR to the DVD video input. Press the DVD button on the
remote. The # 12 will appear confirming this video path is set. Repeat steps 2-4 above.
6. To test the remaining Composite inputs move the video cable to the next Composite input and press
the corresponding button to set up the video path. Below are the buttons and code #’s for each video
input.
VCR: 13 DVD: 12 V-DISC: 11 TV: 10
AUX: 0F CD: 0E TUNER: 0D TAPE: 0C
7. To test the Record Composite output port of the MC-1, switch the composite cable from the Composite
Monitor output jack to the Composite Record output jack.
8. Select the MC-1's 8 composite inputs for the Composite Record output from the remote according to
the table below. Example: Pressing and holding the Record button on the remote, then pressing the
VCR button selects the VCR composite input for the Record composite output. The # 53 will appear in
the display to confirm this. Below are the button combinations and code #’s for each video input.