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Nokia Customer Care
8-System Module
32
COMPANY CONFIDENTIAL
Issue 2 06/2005
Copyright © 2005 Nokia. All Rights Reserved.
Test Interfaces
Test pattern is placed on engine PWB, for service purposes, same test pattern is used for after
sales purposes as well.
Through MBUS or FBUS connections, the phone HW can be tested by PC software (Phoenix)
and equipment.
Figure 12: Test pattern
■
Connections to Baseband
The flash programming box, FPS8, is connected to the baseband using a galvanic connector
or test pads for galvanic connection. The flash programming interface connects the flash prom-
mer to the UPP via the UEM and the connections correspond to a logic level of 2.7 V. The flash
prommer is connected to the UEM via the MBUS (bi-directional line), FBUS_TX, and
FBUS_RX.
Figure 1 Production test pattern J396 (DAI is J300)
DAI
GND
FBUS RX
FBUS TX
MBUS
Vpp