CU-4 Control unitCU-4 is a general service tool used with a module jig and/or a flashadapter. It requires an external 12 V power supply.The unit has the following features:• software controlled via USB• EM calibration function• Forwards FBUS/Flashbus traffic to/from terminal• Forwards USB traffic to/from terminal• software controlled BSI values• regulated VBATT voltage• 2 x USB2.0 connector (Hub)• FBUS and USB connections supportedWhen using CU-4, note the special order of connecting cables andother service equipment:Instructions1 Connect a service tool (jig, flash adapter) to CU-4.2 Connect CU-4 to your PC with a USB cable.3 Connect supply voltage (12 V)4 Connect an FBUS cable (if necessary).5 Start Phoenix service software.Note: Phoenix enables CU-4 regulators via USB when it isstarted.Reconnecting the power supply requires a Phoenix restart.RM-632; RM-634; RM-699Service Devices and Service ConceptsPage 2 – 6 COMPANY CONFIDENTIAL Issue 3Copyright © 2010 Nokia. All rights reserved.
