Test Interfaces; Connections To Baseband - Nokia 2650 Service Manual

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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.
DAI
GND
FBUS RX
FBUS TX
MBUS
Vpp

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.
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Figure 12: Test pattern
Figure 1 Production test pattern J396 (DAI is J300)
COMPANY CONFIDENTIAL
Copyright © 2005 Nokia. All Rights Reserved.
RH-53/54
8-System Module
Issue 2 06/2005