System Fault Finding Guide; General Faults - ASL INTERCOM VAR8 Operation And Maintenance Manual

VAR8 and Variants Operation, Commissioning, Fault Finding, and Maintenance Guide
28.6

System Fault Finding Guide

The primary means of system fault finding is by reference to the fault codes that are reported by Slave and
Control Units. The engineer obviously must be appropriately trained so as to be familiar with both the
Audio
system architecture and that of the particular installation in order to use the information effectively. Some
diagnostic tools are built into the system to further aid fault finding, see Section
page 118.
The following tables describe the fault codes for VAR8 and its variants.
28.6.1

General Faults

Fault Description
Input Audio Surveillance
Mic Capsule Fault
Mic Comms Fault
Mic CPU Reset
Mic ROM Error
Mic RAM Error
Fire Mic Contact Fault
LED Fault
SPEAK-NOW
LED Fault
ALL-CALL-ONLY
DVA failure
Fault Reported by
contact configured as a
fault input
-
Fault Code(s)
Reported and Logged
IP<n> AUDIO INPUT
n=01 to 08
MIC<n> MIC CAPSULE
n=01 to 08
MIC<n> MIC COMMS
n=01 to 08
MIC<n> mic COMMS
n=01 to 08
MIC<n> FAULT 09
n=01 to 08
(Mic Processor stops)
MIC<n> FAULT 09
n=01 to 08
(Mic Processor stops)
IP01 ALLCALL PTT
or
IP02 ALLCALL PTT
Depending on channel
IP01 SPEAK LED
or
IP02 SPEAK LED
Depending on channel
IP01 ALLCALL LED
or
IP02 ALLCALL LED
Depending on channel
DVA n LONG DVA FAULT
or
DVA n SHORT DVA FAULT
IP<n> CONTACT FAULT
n=1 to 20
Is sue: 02 complete, approved
Check audio cabling or Power supply cabling between
microphone to the VAR8 input or Network Channel to
the VAR8 input.
Check continuity of microphone capsule or any
associated wiring.
Check data cabling or power supply cabling between
microphone and Router.
A one-off occurrence may be experienced due to EMI
or transients. Repeated occurrences indicate faulty
microphone electronics.
Microphone electronics will need replacing.
A one-off occurrence may be experienced due to EMI
or transients. Repeated occurrences indicate faulty
microphone electronics.
Check wiring between Fire Microphone input hardwired
PTT and Router.
Check wiring between Router and SPEAK-NOW LEDs.
Check wiring between Router and ALL-CALL LEDs.
The router in the Electronics Module is faulty. This, or
the entire Electronics Module will need replacing.
The CONTACT FAULT text is user configurable to be
descriptive of the particular fault.
Page 150 of 166
"25 Diagnostic
Suggested Action
Tools" on