Firecom 3000C Installation & Operation Manual page 28

26.
S E R V I C E I N F O R M A T I O N
3. Unplug the CA Cable from the intercom unit and exchange intercom ports with a
known good headset location.
• If the headset location works properly, check the intercom port for bent or
stuck pins which can be straightened.
• If the headset fails to perform properly, the headset location has a faulty
component and you should continue troubleshooting the headset location.
4. Check the HM-10 by exchanging it with a known good one.
• If the new HM-10 works, check the modular plug of the faulty HM-10 for bent
or stuck pins. If the pins look good and the HM-10 fails to perform properly ,
it will need to be replaced.
Install new RJ-12 modular connectors on BOTH ends of the CA Cable (page 21).
5.
6. Replace the CA Cable.
CHECK THESE ITEMS BEFORE RETURNING AN
ITEM FOR REPAIR
FAULTY INTERCOM:
1. Check all intercom ports for bent or stuck pins that can be straightened.
FAULTY CA CABLES:
1. If tools are available, try replacing the modular plugs on both ends of the
CA Cable (page 21).