3com CM 4000 Manual De Usuario

Control panels can be tested without affecting switcher operations.

To enter the diagnostic mode, press and hold CHG VID and then press CHG A5: the CHG VID and CHG A1 lights will come
on; CHG VID will enable the Button/Lamp Test and CHG A1 will start the Lamp Self−Test.

This test is used to check the proper operation of control panel push buttons. Whenever a button is pressed, that button’s lamp
should come on. To exit, press any button twice.

Lamps should come on sequentially, remain on, and then go off. This mode will continue until a button is pressed.

To enter the diagnostic mode, press and hold the output 0 button and then press output 5: the output 0 and output 1 lights will
come on; output 0 will enable the Button/Lamp Test and output 1 will start the Lamp Self−Test.

Press and hold CHG VID and then press CHG A5. This will cause the panel to display its device name as defined in the MPK
Devices table. To exit, press PROT, or

— Press TAKE to display the panel ID. To exit, press PROT, or

— Press TAKE a second time to enter the diagnostic mode menu. Pressing the CHG OUT button will scroll

through the different diagnostic tests:

Display (LED) test

To start, press TAKE. To exit, press any button.

Keyboard test

To start, press TAKE. Then press every button, checking for duplications. To exit, press any button
twice.

Lamp test

To start, press TAKE. All lamps should light sequentially. To exit, press any button.