Service and troubleshooting
8.60 EST3 Installation and Service Manual
[TSCRN4.CDR]
Device Trouble Tab
Device Trouble Message
Click Here
to Select Cabinet
Click Here to Select Loop Controller Card
Click Here to Select SDC Circuit
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Figure 8-20: Device trouble dialog box
Table 8-37 below lists the Signature Detector trouble messages,
and possible causes and solutions. Table 8-38 lists the Signature
Module trouble
messages, and possible causes and solutions.
Table 8-37: Signature detector trouble messages
Trouble message Possible cause Possible solution
External Device Line Short Defective Detector Replace Detector
External Device Line Open Defective Detector Replace Detector
Error XMIT Light Detector Dirty Clean detector
Device switched to short after
isolator relay operated
Short on Signature data
circuit
Locate and remove cause of
short.
ESK Value Too Low 1. Dirty Detector
2. Bad Ion Chamber
1. Clean Detector
2. Replace Detector
ESK Slope Too High 1. Dirty Detector
2. Bad Ion Chamber
1. Clean Detector
2. Replace Detector
ESK Slope Too Low 1. Dirty Detector
2. Bad Ion Chamber
1. Clean Detector
2. Replace Detector
Quiescent Too Large Devices on the Signature
data circuit are drawing too
much current during the
mapping process.
Place a short or low resistance
shunt across the data circuit.