Troubleshooting Guide - Sentry Sample Sequencer 5 Installation, Operation And Maintenance Manual

8 TROUBLESHOOTING GUIDE

Table 3: Troubleshooting Guide
Symptom
Display doesn't light
Incorrect analyzer value
Sequencer doesn't
recognize end-of-batch
signal from analyzer
SPD 5.5.15
Sentry Equipment Corp | Sample Sequencer
Possible Problem(s)
Power
Scale
Calibration
Mode
Wiring
Remedy
1. Check the power LED on the circuit
board. Is it lit?
NO → proceed to step 2.
YES → contact Service Department.
2. Check the power connections from the
Power Supply to the circuit board. Are
the connections tight?
NO → set cables in place.
YES → proceed to step 3.
3. Check the Power Supply fuse for
continuity. Bad fuse?
YES → replace fuse.
NO → contact Service Department.
1. Verify the scaled output of the analyzer
matches the scaled input of the
Sequencer. Does the problem persist?
YES → proceed to step 2.
2. Perform an analog input calibration.
Does the problem persist?
YES → contact Service Department.
1. Verify the Sequencer is in the Batch
mode. (Refer to Mode in the Operation
section of this manual.) Correct Mode?
NO → change to Batch mode.
YES → proceed to step 2.
2. Verify an End-of-Batch indication is
correctly wired between the analyzer
and Sequencer. Does the problem
persist?
YES → contact Service Department.
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