Can't Make Voice Call/No Service; No Or Low Tx Output Power In Gsm - Motorola MotoRAZR maxx V6 Manual

Motorola GmbH, Mobile Devices, CSS Center
Title: Troubleshooting-Guide MotoRAZR maxx V6

Can't make voice call/no service

First step in every call related problem should be to figure out whether there is a receiving
problem or a transmitting problems and which bands are affected.
Make sure that the RF connectors
making a phasing/call processing test or if the test fails.

No or low TX output power in GSM

Check the connection to the antenna to ensure it is properly plugged. Prior to remove any
shields for measurements, visually inspect the antenna circuit for skewed/misplaced parts.
Let radio transmit on GSM900 using RepairStudio/Radiocomm. Make sure to provide a
battery voltage via micro clamp-type test probes to battery contacts J5400.
Measure the power at the output of the GSM PA
If output power EGSM_OUT
- Check to see if PA
- Check the input power
Repair Support Information
M001/M002 are cleaned (with cleaner or alcohol) before
Figure 35
U800
from PA is low
U800 is soldered down properly
TX_LB_IN to the PA from TransAAM at
Figure 36
© Copyright 2003-2007 Motorola Inc. All Rights reserved.
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Doc. No: TSG_3G_V6
Version: 1.0
Date: 23.07.2007
Page: 34 / 40
at R804-1.
C841-1