Product Info

1X UBS Macro B T S FRU DMI (Digital Module Internal) Assembly
Prerequisites
ESD handling precautions must be adhered to when handling and working on the DMI
assembly or the modem boards. W ear a conductiv e, high impedance wrist str ap
during handling. All work performed on the DMI assembly and modem boards must
be done in an ESD protected work area.
The procedures in this chapter requires working on or around circuitry that is extremely
sensitive to ESD .
Coordinate the DMI replacement task with the OMCR operator .
Before You Begin
Before you begin, record the pertinent information in the following table (see T able 8 -3 ):
Table 8 -3 Item Number R eplacement List
Item Number
BTS number
DMI number
If the failed DMI is to be replaced with a “field prepared DMI assembly”, it will be necessary
to have a work area that meets the criteria described in DMI Preparation Area on page 8 - 10 .
Then it will be necessary to prepare the complete DMI assembly by performing Procedure 8 -1
Preparing the replacement DMI assembly in the Field on page 8 - 11 prior to performing the
Procedure 8 -2 Replacing the DMI on page 8 - 15 .
68P09283A64 -3 8 -9
FOA SEP 2007