The SC2104 Radio Communicator may be manually reset/initialized. The reset/initialize function is performed by a sequence involving momentarily shorting pins #1 and #2 on the JP-1 CPU RST Header. The JP-1 Header is located on the main SC2104 circuit board and requires disassembly of the SC2104 Radio Communicator.
Solution
*NOTE - The following procedure will erase all the programmed data in the CPU with the exception of the CPU serial number.
To manually initialize the SC2104 Radio Communicator:
1. Remove the auxiliary power source from the SC2104 (power off).
2. Loosen the four retaining screws on the SC2104 panel cover and remove the cover.
3. Loosen and remove the screws and battery mounting shelf, exposing the main SC2104 circuit board.
4. Short the two pins on the JP-1 Header together. Keep the short in place.
5. Apply the auxiliary DC power source to the SC2104 (power on). This step will initialize the CPU. The System Status LED will blink red three times, pause, then repeat. This indicates that all of the parameter EEPROM memory in the CPU has been erased.
6. Remove the short between the two pins on the JP-1 Header.
7. Remove the auxiliary power from the SC2104 (power off). SC2104 System Initialization SC2104 Operation and Installation Guide 90027-201C Page 28 © 2001 Radionics
8. Replace the SC2104 battery mounting shelf, panel cover and tighten the four retaining screws.
9. Apply auxiliary power to the SC2104 (power on). This step will initiate a system startup. The SC2104 will behave exactly like a brand new unit.
