The D9124 is a 9000 control panel with a 24Vdc PSU and all the needed Fire Accessories for a basic system, all in one large red enclosure. See parts List below.
The D9124 is made up of the following:
D9112LTB, D9412LTB ,D9412GLTB, D9412GV2LTB - Control Panel
D9101 - Red Enclosure
D9100 - Carriers Module with the Following parts *
* 2 - D192C - Bell Supervision Modules
* 1 - D8125 - Popex Module
* 1 - D928 - Dual Phone line Switcher
* 1 - D9142LC - 24Vdc Power Supply
D1256 - Fire Keypad
D1601 - Hardwire Transformer
Issue
D8112 Displays CPU FAIL.
Solution
D8112 Displays CPU FAIL
Remove Data wires from terminals 30 and 31.
Copy the panel via RAMii, RPS or D5200 and save the copy.
Send the panel a NEW RECORD or Blank Account. (Basically set the panel back to factory default.)
Reload the regional copy back in the panel.
Reattach the Data wires to terminals 30 and 31.
If still in CPU FAIL - Rewrite the saved copy of the program and save as a different file name.
Remove Data wires from terminals 30 and 31.
Send the panel a NEW RECORD or Blank Account.
Send the new file into the panel.
Reattach the Data wires to terminals 30 and 31.
If still in CPU FAIL - replace the panel.