Lenel DirecDoor, Installation Manual

Page: 86 / 90

Troubleshooting and Maintenance
86
DirecDoor Installation Guide
Diagnostic LED Display
Built-in diagnostics enable you to quickly determine why a controller may not be working correctly.
The board LEDs D18 (File Sys. Activity LED), D19 (Watch dog LED), D20 (Flash Upload LED),
and D21 (Shut down Request LED) are used for displaying error codes.
Maintenance
Inserting and Removing the UCSIMMPlus Board on the DirecDoor
Board
• WARNING! • Do not remove the UCSIMMPlus board unless instructed to do so by
Technical Support.
1.
Disconnect power and battery backup power.
• WARNING! • Follow standard static prevention procedures. Refer to Electrostatic Discharge
(ESD) Precaution on page 16 .
2.
Locate the clips on the right and left sides of the UCSIMMPlus board. Press both clips out.
3.
Pull out the UCSIMMPlus board.
4.
The board fits in with the small cutout in the right corner. Insert the board at a 45 degree angle.
5.
Press down on the board until the clips engage.
6.
Connect the power and battery backup power to restart the controller.
DirecDoor Board LED Fault Conditions
D14 D15 D16 D17 D18 D19 D20 D21
Resolution
/Definition
Operation state
Restore
defaults
requested ON ON Factory
default
settings
were
restored to
the board.
Watchdog
failure
mode ON ON An internal
thread
failed.
a
a. The failure was logged according to the log settings. The controller performs a complete reboot after this
failure.
= OFF