Lexicon LXP-5 - Troubleshooting; LXP-5 Signal Path Troubleshooting

LXP-5 Service Manual
Performance
Verification
Since Diagnostic Tests can be performed without opening the unit they Troubleshooting
should generally be run first. This greatly reduces repair time, as a problem -
can be isolated to a specific circuit, even to a specific 1C before opening the
unit.
The following presents a diagrammatic version of the recommended trou¬
bleshooting procedure with page references.
NO WET AUDIO SIGNAL
Run Diagnostic Tests to isolate digital
hardware problems:
ROM test 2-6
Master RAM test 2-6
Master Address test 2-6
Master/Siave WCS tests 2-8
Individual Slave tests 2-7, 2-8
AUDIO SIGNAL PROBLEMS
NO DRY AUDIO SIGNAL
Check Power Supplies 2-10, 3-3
Check Power Supplies 2-10, 3-3
>
r
r
Check Clocks and timing 2-10
r
Check Converter Circuitry 3-16
->
Trace Signal 2-12
I/O PROBLEMS
2-21