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Guardian Telecom Inc.
Installation Programming Operation
Merge/Isolate Zone Control System
Page 22
Field Repairs & Adjustments
Field repairs may only be carried out by qualified technicians using OEM parts.
Substitution of parts voids warranty and may pose a hazard to users of the
equipment.
Disconnect power to the MICAB before attempting repairs.
Perform the necessary repairs or adjustments.
MICAB Fuse Replacements
The Main power supply fuse is in the back panel fuse holder.
The +24VDC power supply fuse is accessible through the front of MICAB with
the Plexiglas cover removed.
Remove the old fuse and insert the new fuse.
WARNING!
See:
Replace only with the correct fuse as described in the Engineering
Specifications section. Failure to do so will void the warranty.
If, on reconnecting power, the fuse fails, remove all MICONs connectors from
the MICAB. Check the power supply source and the rating on the MICABs.
Apply power to the MICAB again if power source is correct.
If the MICAB is OK, check the MICON cables for short between power pin and
ground pin. Replace cable if required.
Connect the MICONs back to the MICAB one at a time to identify the problem
MICON.
Programming Difficulties
The MICAB cannot be programmed.
Be sure all the jumpers on the Master MICAB are set up as the Master MICAB.
If there is only one MICAB in a system the jumper must be set as the Master
MICAB. If there are two MICABs in a system, one must be set up as the master
and the other as slave. Two MICABs cannot both be the Master MICAB or the
Slave MICAB.
Remove all other MICONs except the one that is used for programming the
MICAB.
Use the [LMP TST] key to verify that the MICON is set as station number 1 (the
master MICON).
Press the [PVT] key and the [LMP TST] key simultaneously to get into the
Programming Mode. Change the MICON station number to 1. Program other
settings of the MICAB, and store the settings by uploading the settings from the
MICON to the MICABs. If the uploading is done successfully the Zone LEDS on
the MICABs will flash once
.
Plug all other MICON connectors back to the MICABs. All MICONs must be
programmed with different station numbers.