Motorola T2290 User manual

DIGITAL WIRELESS TELEPHONE
™
Service Manual
Level 3
Release 1
TDMA T2290/T2297

COMPUTER SOFTWARE COPYRIGHTS
The Motorola products described in this instruction manual may in-
cludecopy-rightedMotorolacomputerprogramsstoredinsemi-conduc-
tormemoriesorothermedia.LawsintheUnitedStatesandothercoun-
triespreserveforMotorolacertainexclusiverights for copyrighted com-
puter programs, including the exclusive right to copy or reproduce in
any form the copyrighted computer program. Accordingly, any copy-
righted Motorola computer programs contained in the Motorola prod-
ucts described in this instruction manual may not be copied or repro-
ducedinany mannerwithoutthe expresswrittenpermissionofMotorola.
Furthermore, the purchase of Motorola products shall not be deemed to
grant either directly or by implication, estoppel, or otherwise, any li-
censeunderthe copyrights, patents or patent applica-tions of Motorola,
except for the normal non-exclusive, royalty free license to use that
arises by operation of law in the sale of a product.
This manual is the property of Motorola. No part of this
manual may be duplicated in any form without the ex-
press written permission of Motorola. This manual must
be returned upon Motorola request
The information in this manual is subject to change without notice. No
guarantee is made for accuracy or thoroughness. This manual is in-
tended as a training aid in conjuction with formal classes provided by
Motorola. Motorola takes no responsibility for the use of this manual
beyond its intended scope.
Motorola,the MotorolaLogo andall othertrademarks iden-
tified as such herein are trademarks of Motorola, Inc. All
other product or service names are the property of their
respective owners.
© Copyright 2000 by Motorola, Inc. All rights reserved

©2000 Motorola, Inc. iii
Scope of Manual
This manual is intended for use by experi-
encedtechniciansfamiliar withsimilartypes
ofequipment. Itisintended primarilyto sup-
port basic servicing, which consists prima-
rily of mechanical repairs and circuit board
replacement.
Authorized distributors may opt to receive
additional training to become authorized to
perform limited component repairs. Contact
yourregional Customer Support Manager for
details.
Model and Kit Identification
Motorola products are specifically identified
by an overall model number on the FCC la-
bel.Inmost cases, assemblies and kits which
make up the equipment also have kit model
numbers stamped on them.
Service
Motorola regional Cellular Subscriber Sup-
port Centers offer some of the Þnest repair
capabilitiesavailable to MotorolaSubscriber
equipment users. The Cellular Subscriber
SupportCentersareable to perform comput-
erizedadjustments and repair most defective
transceivers and boards. Contact your re-
gional Customer Support Manager for more
information about MotorolaÕs repair capa-
bilities and policy for in-warranty and out-
of-warranty repairs in your region.
General Safety Information
Portable Operation
DO NOT hold the radio so that the antenna
is very close to, or touching, exposed parts of
the body, especially the face or eyes, while
transmitting. The radio will perform best if
it is held in the same manner as you would
hold a telephone handset, with the antenna
angled up and over your shoulder. Speak di-
rectly into the mouthpiece.
DO NOT operate the telephone in an air-
plane.
DO NOT allow children to play with any
radio equipment containing a transmitter.
Mobile Operation (Vehicle Adaptor)
As with other mobile radio transmitting
equipment, users are advised that for satis-
factory operation of the equipment and for
the safety of personnel, it is recommended
that no part of the human body shall be al-
lowed to come within 20 centimeters of the
antenna during operation of the equipment.
DO NOT operate this equipment near elec-
trical blasting caps or in an explosive atmo-
sphere. Mobile telephones are under certain
conditions capable of interfering with blast-
ing operations. When in the vicinity of con-
struction work, look for and observe signs
cautioning against mobile radio transmis-
sion. If transmission is prohibited, the cellu-
About This Manual

©2000 Motorola, Inc.
TDMA T2290/T2297About This Manual
iv
lar telephone must be turned off to pre-
vent any transmission.In standby mode,the
mobiletelephonewillautomaticallytransmit
to acknowledge a call if it is not turned off.
All equipment must be properly grounded
accordingto installation instructionsfor safe
operation.
Portable/Mobile Telephone Use and
Driving
Safetyiseverydriver’sbusiness. The portable
telephone should only be used in situations
in which the driver considers it safe to do so.
Use of a cellular portable while driving may
be illegal in some areas.
Refer to the appropriate section of the prod-
uct service manual for additional pertinent
safety information.

©2000 Motorola, Inc.
About This ManualService Manual
v
Specifications
Table 1.Overall System
Table 2. EAMPS System
Function Specification
Frequency Range TX (800MHz) : 824.04 - 848.97 MHz
Channels 1 to 799, fTX = 0.03 * N+ 825MHz
Channels 990 to 1023, fTX = 0.03(N-1023)+ 825MHz
RX(800 MHz): 869.04 – 893.97 MHz
Channels 1 to 799, fRX = 0.03 * N+ 870MHz
Channels 990 to 1023, fRX = 0.03(N-1023)+ 870MHz
TX (1.9 GHz) : 1850.01 – 1909.95 MHz
Channels 1 to 1999 fTX = 0.03 * N+ 1849.98MHz
RX (1.9 GHz) : 1930.05 – 1989.99 MHz
Channels 1 to 1999 fRX = TX + 80.04MHz
Channel Spacing 30 kHz
Channels 832 (800MHz), 1999 (1.9 GHz)
Duplex Spacing 45 MHz (800MHz), 80.04 MHz (1.9GHz)
Input/Output Impedance 50 ohms (nominal)
Operating Voltage +3.6 to +4.1Vdc
Dimensions 120cc (Volume)
Weight 140 g
Display 96 X 32 Graphic Matrix
Analog RF Power Output 0.316 Watts (25 dBm)
Digital RF Power Output 0.562 Watts (27.5 dBm)
Automatic Power Control 9, 4 dBm steps
Function Specification
Modulation Type FM
Frequency Stability +2.5ppm
Duty Cycle Continuous
Audio Distortion
(transmit and receive) Less than 5% at 1 kHz; +8 kHz deviation
FM Hum and Noise
(C-MSG weighted) 32 dB below +8 kHz deviation @ 1 kHz
Voice Modulation Maximum +12 kHz deviation
Transmit Audio Sensitivity 9 kHz deviation (nom.) @ 97 dB SPL input @ 1 kHz
Receive Sensitivity -116 dBm for 12 dB SINAD (C-MSG weighted)
Adjacent and Alternate
Channel Desensitization -16 dB @ +30 kHz, -60 dB @ +60 kHz
IM Greater than 65 dB

©2000 Motorola, Inc.
TDMA T2290/T2297About This Manual
vi
Table 3. DAMPS System
Table 4. Environment
Function Specification
Modulation Type π/4DQPSK
Frequency Stability +200 Hz
Duty Cycle 32.3%
Error Vector Magnitude
(π/4DQPSK mode) Error Vector Magnitude [Digital] 12.5%
Transmit Audio Sensitivity TOLR of –46 dB nominal
Receive Sensitivity -116 dBm for 3% static BER
Adjacent and Alternate
Channel Desensitization -116 dBm for 3% static BER
IM Less than or equal to 3% static BER
Function Specification
Temperature -30ºC to +60ºC
Humidity 80% RH at 50ºC
Vibration EIA PN1376
Shock EIA PN1376

©2000 Motorola, Inc.
Table of Contents
vii
About This Manual ....................................................................................................................... iii
Scope of Manual ....................................................................................................................... iii
Model and Kit Identification....................................................................................................... iii
Service...................................................................................................................................... iii
General Safety Information ....................................................................................................... iii
Portable Operation........................................................................................................................................ iii
MobileOperation(Vehicle Adaptor) ............................................................................................................... iii
Portable/MobileTelephone Use and Driving................................................................................................... iv
Specifications.............................................................................................................................v
Cellular Overview .......................................................................................................................... 1
Introduction ................................................................................................................................1
Control (Data) Channels ................................................................................................................................2
Voice Channels..............................................................................................................................................3
Signaling Protocol ..........................................................................................................................................3
AnalogCellular...........................................................................................................................5
Signaling Tone (ST) and Digital ST (DST).......................................................................................................5
SAT (Supervisory Audio Tone) and DSAT (Digital SAT) ...................................................................................6
DTMF(Dual Tone Multi-Frequency)................................................................................................................6
Analog Cellular Signal Summary (AMPS and NAMPS) ...................................................................................7
Going into Service .........................................................................................................................................8
Placing a Call (Mobile to Land or Mobile to Mobile) .......................................................................................10
Receiving a Call (Land to Mobile) .................................................................................................................11
Power Steps ................................................................................................................................................13
Hand-offs.....................................................................................................................................................13
CallTermination ...........................................................................................................................................15
Digital Cellular..........................................................................................................................17
Multiplexing .................................................................................................................................................17
FDMA(Frequency Division Multiple Access).................................................................................................17
Digitizing Voice ............................................................................................................................................17
TDMA(Time DivisionMultipleAccess) .........................................................................................................18
Digitizationand TDMA .................................................................................................................................18
Digitization of Voltage...................................................................................................................................19
Conventional Radio......................................................................................................................................19
TDMA Radio ................................................................................................................................................20
Accessories ................................................................................................................................. 21
TDMA EASY NAM Programming................................................................................................ 23
Introduction ..............................................................................................................................23
User Mode Programming.........................................................................................................23
Programming Sequence ..........................................................................................................24

©2000 Motorola, Inc.
TDMA T2290/T2297Table of Contents
viii
Enter Programming Mode ............................................................................................................................24
Enter Security Code.....................................................................................................................................24
Enter Phone Number ...................................................................................................................................24
Programming a second No...........................................................................................................................24
If you make a mistake ..................................................................................................................................24
TDMA Test Mode NAM Programming ........................................................................................ 25
Introduction ..............................................................................................................................25
Entering Test Mode NAM Programming...................................................................................25
NAM Programming Steps ........................................................................................................25
NAM Data ................................................................................................................................26
User Mode Programming.........................................................................................................26
Test Mode NAM Programming Sequence................................................................................27
Manual Test Mode........................................................................................................................ 31
Introduction ..............................................................................................................................31
Entering Manual Test Mode .....................................................................................................31
Status Display Level ................................................................................................................31
Servicing Level.........................................................................................................................32
Test Procedures .......................................................................................................................... 35
Introduction ..............................................................................................................................35
Automatic Call-Processing Tests..............................................................................................35
Analog Test Measurements ..........................................................................................................................35
Digital Test Measurements ...........................................................................................................................35
Test Connections .....................................................................................................................36
RF Cable Test ..........................................................................................................................37
To test the RF cable for proper loss: .............................................................................................................37
Set up for Analog call ...............................................................................................................38
Registration .................................................................................................................................................38
Page............................................................................................................................................................38
Select CALL CNTL from the To Screen.........................................................................................................38
Origination ...................................................................................................................................................38
RX Sensitivity Test (SINAD) .....................................................................................................39
Test Mode Commands: ................................................................................................................................39
CommunicationsAnalyzerSetup:.................................................................................................................39
TX Power Out Test...................................................................................................................40
Test Mode Commands: ................................................................................................................................40
CommunicationsAnalyzerSetup:.................................................................................................................40
Test Mode Commands: ................................................................................................................................41
CommunicationsAnalyzerSetup:.................................................................................................................41
TX Maximum Deviation Test ....................................................................................................42
Test Mode Commands: ................................................................................................................................42
CommunicationsAnalyzerSetup:.................................................................................................................42
TX SAT Deviation Test .............................................................................................................43
Procedure....................................................................................................................................................43
Select CALL CNTL from the To Screen.........................................................................................................43
TX ST Deviation Test ...............................................................................................................44
Test Mode Commands: ................................................................................................................................44

©2000 Motorola, Inc.
Table of ContentsService Manual
ix
CommunicationsAnalyzerSetup:.................................................................................................................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

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x
Digital TX Audio Processing.....................................................................................................63
DSP Lucent 1629.....................................................................................................................63
Stuart IC...................................................................................................................................64
GCAP II....................................................................................................................................64
Section B
Service Diagrams ....................................................................................................................... B1
Antenna Circuit ....................................................................................................................... B3
Front End IC(U10)................................................................................................................... B5
ZIFSYNTH(U110).................................................................................................................... B7
VCO ........................................................................................................................................ B9
TX Offset Oscillator............................................................................................................... B11
Merlyn(U301) ........................................................................................................................ B13
Exciter................................................................................................................................... B15
PA Circuit .............................................................................................................................. B17
RF Detect.............................................................................................................................. B19
Reference Oscillator ............................................................................................................. B21
DCI(U1800)........................................................................................................................... B23
GCAP2(U1500)..................................................................................................................... B25
Voltage Regulators................................................................................................................ B27
Charger................................................................................................................................. B29
Audio Circuit.......................................................................................................................... B31
DSP(U1900).......................................................................................................................... B33
STUART(U1907)................................................................................................................... B35
Call Processor(U1000).......................................................................................................... B37
Memory ................................................................................................................................. B39
B+ Disconnect/Backlight Driver............................................................................................. B41
Keypad.................................................................................................................................. B43
Connectors............................................................................................................................ B44
Layout Side 1........................................................................................................................ B45
Layout Side 2........................................................................................................................ B46