Service manual

26 Chapter 2
Troubleshooting
Perform Power-on Self Test
Perform Power-on Self Test
The actions in the primary trouble isolation are done in the power-on sequence. Turn the
system power on and inspect the status of the instruments (status LED on the front panel
and error message in the LCD of the spinstand) as reference to the Table 2-1. If you find a
symptom of the problems, it is necessary to isolate a defective instrument as reference to
trouble isolation flow. After replacement of the instrument, turn the system power on and
inspect it again.
When the inspection of the power on sequence pass, go to next trouble isolation steps.
Table 2-1 Inspect The Power On Sequence
Asserted Instrument Symptom of the Problem Action (check
or replace
instrument)
E8401A (VXI Main
Frame)
“supply voltages” indicator flashing amber
(normally green)
E8401A
“supply temp” indicator flashing amber
(normally green)
E8401A
“fans” indicator flashing amber (normally
green)
E8401A
“SYSFAIL” indicator flashing amber
(normally dark)
E8401A or
VXI module
E8491B (IEEE-1394
PC Link to VXI)
“Failed” indicator lighting amber (normally
dark)
E8491B
“SYSFAIL” indicator lighting amber
(normally dark)
E8491B or
VXI module
E5035B (Spinstand
Interface Module)
Status LED lighting red (normally green or
amber)
E5035B
E5036A (Filter
Matrix Module)
Status LED lighting red (normally green) E5036A
E5037C/D (Data
Generator Module)
Status LED lighting red (normally green or
amber)
E5037C/D
E5038B (Parametric
Measurement
Module)
Status LED lighting red (normally green or
amber)
E5038B
E5039B/C (Bit Error
Test Module)
Status LED lighting red (normally green or
amber)
E5039B/C
E5040A (Spectrum
Measurement
Module)
Status LED lighting red (normally green or
amber)
E5040A