Keyscan CA250B, Technical Instructions

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Keyscan Inc. – Technical Guide (PC109x - 04.15) 57
S1 - System Reset / S3 -
Restore Factory Defaults
S1 – System Reset
The System Reset S1 is a push button that re-boots the control board to initialize any previous changes made
to the S2 DIP switches. If the control board is powered while any of the following S2 DIP switch functions were
altered, momentarily press the S1 System Reset push button:
 S2.1 - Communication Mode
 S2.2 & S2.3 - Communication Bit Rate Selection
 S2.4 & S2.5 - Alternate Panel Serial Number
 S2.6 – Lockdown
 S2.7 & S2.8 - Communication Terminal Block Activation
 S2.11 & S2.12 – Software Selection – refer to S3 Restore Factory Defaults
If the control board was not powered while the S2 DIP switches were changed, with the exception of S2.11 &
S2.12 – Software Selection, you do not have to perform a system reset. The changes will be initialized when
power is applied to the control board.
S3 – Restore Factory Defaults (Clear Memory)
S3 restores the control board’s factory default settings. You must restore the factory default settings whenever
you have performed one or more of the following procedures to a control board:
 when a control board has been newly installed
 when an EPROM or reader PROM has been changed
 when the software selection DIP switches have changed
 when the ACU protective cover has been removed to mount a NETCOMP on the Ethernet M1 socket
Procedure
To restore the factory default settings, ensure the control board has power, press S1, wait 5 seconds.
Press S3 within 10 seconds.
After performing the above clear memory procedure, the system status LED begins flashing RED and the
control board’s piezo emits a cycle of two (2) short beeps followed by a pause. This occurs for
approximately 120 – 150 seconds while the factory default settings are loaded and the database
information is erased from the on-board memory. Do not make any changes to the control board, such as
altering DIP switches or powering down the board, while the factory defaults are being restored or you will
have to repeat the procedure. After the System Status LED has stopped flashing, the factory default
settings have been restored and the Keyscan database has been cleared from the on-board memory. After