Programming instructions

The IC2 Database Chip
The QwikBus™ system has 8 pin nonvolatile IC chips located on the back of each TSMB3
Speaker Microphone Module (in the Modular style Entry Panels) or TT33-2 Speaker
Microphone Module (in the Custom style Entry Panels). Each unit has this chip which
maintains the programming for that specific entry.
If you have to replace a TSMB3 or TT33-2 unit, you can remove
the IC2 from the old unit and install it into the new unit so you do
not have to reprogram that entrance. When doing this
replacement, be sure to install it in the correct polarity indicated
by the mark on the chip.