UM581127000 User Instructions
Issue AB, March 22, 2012 Spec. No. 581127000 (Model 710NPBA)
Page 18 Chapter 4. Troubleshooting and Repair
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press ENT twice. (Note: If you have been assigned a unique User Name and
password, follow this procedure to enter these.)
3) With the Manual menu screen displayed, navigate to and select “Converter”
(ENT) / “All Conv Ctrl” (ENT).
4) Navigate to “Clear Conv Lost”. Press ENT. “Clear” highlights.
5) Press ENT to select the operation. Press ENT again to confirm.
6) Return to the Main screen by repeatedly pressing ESC (escape).
When a trouble symptom is localized to a faulty rectifier module, converter module,
controller, or system circuit card; that particular device or circuit card should be replaced
in its entirety. Other than a rectifier module or converter module fan replacement, no
attempt should be made to troubleshoot or repair individual components on any rectifier
module, converter module, controller, or circuit card.
Refer to SAG581127000 (System Application Guide) for replacement part numbers.
Danger: Adhere to the “Important Safety Instructions” presented at the front of this
document.
Replacing a Rectifier or Converter Module
Refer to the Rectifier User Instructions (UM1R243000) or Converter User Instructions
(UM1C24481500) for a rectifier and converter module replacement procedure. Refer
also to System Troubleshooting Information in this chapter.
The rectifier or converter module being replaced is assigned by the ACU+ the lowest
available identification number. If desired, you can change the identification number, see
“Configuring the ACU+ Identification of Rectifier Modules” or “Configuring the ACU+
Identification of Converter Modules” in Chapter 5 of the separate Power System
Installation Manual (IM581127000).
Replacing the ACU+ Controller
Refer to the ACU+ User Instructions (UM1M820BNA) for a controller replacement
procedure.