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Service Manual
Communications Analyzer Setup: ................................................................................................................. 44
Setting up for PCS TDMA Measurements ................................................................................45
Power up the PCS Adapter, after two beeps are heard power up the 8920B ................................................. 45
Setting up for PCS TDMA Measurements ................................................................................46
Set up for TDMA call ................................................................................................................47
Call Process ................................................................................................................................................ 47
Registration ................................................................................................................................................. 47
Select CALL CNTL from the To Screen ......................................................................................................... 47
Page ............................................................................................................................................................ 47
Origination ................................................................................................................................................... 47
MAHO Measurements .............................................................................................................48
Setting up the MAHO measurement ............................................................................................................. 48
Measuring MAHO ........................................................................................................................................ 48
BER Measurements .................................................................................................................49
PCS Mode Handset Commands: .................................................................................................................. 49
BER Measurement Procedure ...................................................................................................................... 49
TX Power Measurements ........................................................................................................50
PCS Mode Handset Commands: .................................................................................................................. 50
Digital TX Power Out Test Procedure ........................................................................................................... 50
TX Frequency Error Measurements .........................................................................................51
PCS Mode Handset Commands: .................................................................................................................. 51
TX Frequency Error Measurement Test ........................................................................................................ 51
EVM Measurements ...............................................................................................................52
PCS Mode Handset Commands: .................................................................................................................. 52
TX Frequency Error Measurement Test ........................................................................................................ 52
Disassembly ................................................................................................................................ 53
Introduction ..............................................................................................................................53
Recommended Tools ...............................................................................................................53
Battery Removal ......................................................................................................................54
Antenna Removal ....................................................................................................................55
Back Housing Removal ............................................................................................................55
Transceiver Board Removal .....................................................................................................56
Display Removal ......................................................................................................................56
Keypad Removal ......................................................................................................................57
Speaker Removal ....................................................................................................................57
Parts List ...................................................................................................................................... 59
Introduction ..............................................................................................................................59
Mechanical Explosion ..............................................................................................................59
General Description .................................................................................................................... 61
Antenna Circuit ........................................................................................................................61
RX Front End ...........................................................................................................................61
NADC IC ..................................................................................................................................61
TX Operational Description .....................................................................................................62
Power Amp Integrated 800 MHz or 1900 MHz IC ....................................................................62
Analog TX Audio Processing ...................................................................................................63
©2000 Motorola, Inc.
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