Replacing The Fuses On The Power Supply Module For Aux1/Aux2 Or I/O Expansion; Replacing The Backup Battery On The Rtu; Interconnection Diagrams; P Ower S Upply M Odule For Aux1/Aux2 Or I/O E Xpansion - Motorola ACE3600 RTU Owner's Manual

Replacing the Fuses on the Power Supply Module for AUX1/AUX2
or I/O Expansion
To replace a fuse for AUX1 1A/1B or AUX2 2A/2B on the power supply module, or one of the
fuses on the expansion power supply, follow the procedure below.
Procedure 29-9 How to Replace the Fuse for AUX1 1A/1B or AUX2 2A/2B or I/O Expansion
1. Disconnect the cables from the connectors. If the faulty fuses are attached to the main
power supply, press down on the top of the main power cable connector to disconnect the
user's main power cable from the cable inlet on the bottom of the power supply module
front panel.
2. Simultaneously press on the tabs on the top and bottom of the plastic front of the old
module, and pull the module from its slot.
3. Using narrow pliers, remove the faulty fuse from its groove on the board. For a diagram of
the fuses in the expansion power supply, see Expansion Power Supply Fuses in the
Expansion Power Supply Module chapter above.
4. Press the new fuse into the groove on the board.
5. Slide the power supply module all the way into the slot until the tabs click into place.
6. Reconnect the cables as in installation.

Replacing the Backup Battery on the RTU

For instructions on replacing the backup battery on the RTU, see Replacing the Backup Battery
in the Power Supply and Backup Battery chapter above.

Interconnection Diagrams

All internal electrical connections except for the main power, ground and battery are performed
in the factory and supplied with the RTU. The electrical interconnection diagrams are
provided below.
29-6
Break/Fix Procedures