Diagnostic Reporting; Front Panel Leds - Lexicon RV-8 Service Manual

To restore factory default settings:
1. Press and hold the front panel Mode
default settings.
2. Continue to hold both buttons until the unit has restarted and the amplifier status LEDs have turned
on.
This operation normally takes approximately forty-five seconds to complete.
To enter the Download mode:
1. Press and hold the front panel Mode
a RV-8 to put the unit into the mode used for downloading the software application.
2. Continue to hold both buttons until "WAITING FOR DOWNLOAD" appears on the front panel display.
This operation normally takes approximately twenty-five seconds to complete.

DIAGNOSTIC REPORTING

All diagnostic functionality is reported to the Vacuum Fluorescent Display (VFD). They report on what test
is being executed, and if the test passed or failed.
Diagnostic status and data is also available on an external PC or a terminal, via the serial debug port
located at the D9 connector labeled RS 232 on the rear panel of the RV-8. In the event a diagnostic
failure occurs for those diagnostic tests that report additional failure information, such as data sent, data
received, address location, etc., can be viewed on the VFD display, or it can be sent to the serial debug
port.
Vacuum Fluorescent Display (VFD)
The VFD is the primary source of information during diagnostics. The exact display information will
depend on the test(s) being executed. When an individual diagnostic test is executed, the VFD will
display the name of that test. Groups of tests, such as the power-on diagnostics, have a generic message
on the top line of the VFD. For example, "DIAGNOSTIC TESTS" is on the VFD while the power-on
diagnostics are being run. An "E" followed by a number that indicates which test failed displays failure
messages.

Front Panel LEDs

The front panel LEDs for the Main input select buttons are also used to display the diagnostic test
number. The LEDs are used in binary format with the Main Tuner LED as the LSB and the Main DVD2
LED as the MSB as shown in the table below:
Test Number:
Main LED: Phono
BIT:
Running test number 1 would illuminate the Main Phono LED only with all the others off. Running test
number 3 would illuminate the Main Phono LED and Main Tuner LEDs only with all others off, etc. If a
failure occurs, the front panel LEDs indicating the test number that was running when the failure occurred
will also continue to be illuminated.
The diagnostics will attempt to continuously execute the failed test, a test loop, to keep the signal lines
active as an aid in debugging the failure.
5-2
button while powering on the RV-8 to restore the factory
, ZONE2 DVD2 and ZONE3 DVD2 buttons when powering on
Tuner CD
0 1 2
TV VCR Sat
3 4 5
RV-8 Service Manual
DVD2 DVD1
6 7