APPENDICES SECTION APPENDIX C166 M86 S ECURITY USER G UIDERear panels on H and HL unitsUID (LED indicator) – On the rear of the “H” or “HL” chassis,to the left of the power supplies, a steady blue UID LED indi-cator displays when the UID button on the control panel ispressed. This LED remains lit until the UID button is pressedagain.Power Supplies (LED indicators) – The power supplies arelocated at the right on the rear of the chassis. An LED indi-cator is located above each of the power plugs. (See Powersupply failure in the Troubleshooting sub-section for infor-mation on detecting a power supply failure and resolvingthis problem.)
