Chapter 5 - Troubleshooting; Diagnostic Categories; Power On Modes; Diagnostic User Interface - Lexicon RV-8 Service Manual

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CHAPTER 5 – TROUBLESHOOTING
This chapter contains a complete description of the diagnostic tests for the RV-8. The diagnostics in the
RV-8 are used to verify functionality of the unit and to aid in troubleshooting defective units. Familiarity is
assumed with the RV-8 structure, all applicable assembly drawings, FAT process, and Audio ATE
processes.

DIAGNOSTIC CATEGORIES

There are two types of diagnostics in the RV-8: power-on and extended. The entire set of power-on
diagnostics is executed every time a unit is powered on using the rear panel power switch. The power-on
diagnostic tests can be run individually in the extended diagnostics. The extended diagnostics contain the
tests that are used to verify functionality and to aid in troubleshooting. The extended diagnostics also
contain additional tests used to verify all the front panel controls, infrared communications, audio and
video performance, etc. The troubleshooting or repair diagnostics are utilized to troubleshoot an RV-8 if
any test fails.
POWER-ON MODES
There are two power-on modes available: power on via the rear panel power switch, and by bringing the
RV-8 out of standby mode. The power-on diagnostics are executed every time the rear panel power
switch is switched on. When an RV-8 is in normal operating mode, pressing the front panel standby
button or the remote control (SYSTEM) OFF button will put the unit into a low power/standby mode. When
the RV-8 is in standby mode, pressing any of the front panel or remote control Main, Zone 2 or Zone 3
input select buttons, and/or pressing the front panel standby button or the remote control POWER button
will bring the RV-8 out of standby mode. No diagnostics are run when the unit is brought out of standby.
DIAGNOSTICS USER INTERFACE
Various combinations of button pushes are used to control diagnostic activity. The table below
summarizes the options available, followed by more detailed descriptions.
Action
Enter Diagnostics
Restore Defaults
Waiting For Download
To enter extended diagnostics via front panel:
1. Press and hold the front panel ZONE2 DVD2 and ZONE3 DVD2 buttons when powering on a RV-8.
2. Continue to hold both buttons until the "DIAGS MENU" appears on the front panel display.
This operation normally takes approximately thirty seconds to complete.
To enter extended diagnostics via serial debug port:
Type "debug" when connected to the serial port to access the debug program (The debug program is
case sensitive). In addition, the extended diagnostics can also be entered by sending "ed", (stands for
extended diagnostics), to the unit via the serial debug port during the first ten seconds after powering on
the unit. For more information, see the section on the Serial Debug program.
Buttons to be Held
ZONE2 DVD2 & ZONE3 DVD2
MODE RIGHT
MODE RIGHT & ZONE2 DVD2 & ZONE3 DVD2
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