K-7
Appendix K
Trouble Message The Probable Cause Is:
Memory Error In RAM Test An error was detected in RAM memory
IC 112 or IC 113.
Memory Error in ROM test An error was detected in the EPROM IC
111 or IC 110
Mic Input Trouble Microphone input open or shorted.
Mic Key Trouble Microphone push button switch wires
shorted or open.
Mic Pre-amp Trouble Pre-amp for microphone in ACM-1
failed and backup is switched.
Missing Device ID Response An ALD module has not returned an ID
Poll response for any of its detectors or
devices. NOTE: This trouble will
accompany module not responding for
missing ALD modules.
Module A/D Convert Fail The PSR-1 at this address has a failed
analog-to-digital converter.
Module Address Buffer Full The NET-7 enclosure checking has
failed. The maximum number of 21
module addresses was exceeded.
Module Comm Failure When network communications are
interrupted, and then restored, all
module addresses affected report this
trouble.
Module Not Responding The module assigned in CSG-M at this
address is not responding.
Module RAM Failure The CRM-4, CSM-4, or CZM-4 at this
address has determined that its internal
RAM is not operating properly.
Module ROM Failure The module at this address has a ROM
checksum failure.
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