Section 7
7-1
7. MAINTENANCE
7.1. INTRODUCTION
This section covers troubleshooting and repair and alignment of the 6675A.
7.1.1. Error Messages.
Error Number Error Corrective Measures
0 nV Detector
Communication Failure
-None, fatal hardware error (try
power switch)
1 Invalid Test Setup -Resistors not wired to front panel
properly, improper test setup
2 Servo Railed -No current path on Rx or Rs
terminals
3 Nano Zero, nVoltmeter not
responding
-Cycle power switch, else fatal
hardware error
4 Null out of Range -Autoranger having problems, so
enter in approx. ratio
5 Max Test Exceeded -Exceeded max current or voltage
on Rs resistor
6 EEROM Failure, Resetting
all values to default
-Loss of resistor and probe setup
files
7 No Serial Number
Specified, File not saved
-Rs Serial number left blank in
setup, put one in
8 Nano Railed, Out of
Nanovoltmeter range
-Resistors not wired to front panel
properly, invalid Test setup
9 Failed Self Test
-None, fatal error (try power
switch)
Table 7-1 : 6675A Error Messages
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