Motorola V551 User manual

Level 1 and 2 Service Manual
V551/V555 GSM
Quad-Band Wireless Telephone
GSM 850/900/1800/1900 MHz
EDGE

6809490A38-O September 28, 2004 1
Level 1 and 2 Service Manual Contents
PRELIMINARY
Contents
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Product Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Product Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Regulatory Agency Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Computer Program Copyrights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
About this Service Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Warranty Service Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Parts Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
General Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Controls, Indicators, and Input/Output (I/O) Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
User Interface Menu Structure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Alert Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Battery Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Tools and Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Removing and Replacing the Battery Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Removing and Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Removing and Replacing the SIM Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Removing and Replacing the Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Removing and Replacing the Rear Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Removing and Replacing the Transceiver PC Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Removing and Replacing the Keypad . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Removing and Replacing the Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Removing and Replacing the Flip Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Removing and Replacing the Front Flip Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Removing and Replacing the Metal Flip Shield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Removing and Replacing the Camera . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Removing and Replacing the Flip/Vibrator Motor Flex . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Removing and Replacing the Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Telephone Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Identification Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Manual Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Manual Test Mode Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Programming: Software Upgrade and Flexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Exploded View Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Exploded View Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
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Contents V551 GSM
PRELIMINARY

6809490A38-O September 28, 2004 3
Level 1 and 2 Service Manual Introduction
Introduction
Motorola®Inc. maintains a worldwide organization that is dedicated to provide
responsive, full-service customer support. Motorola products are serviced by an
international network of company-operated product-care centers as well as
authorized independent service firms.
Available on a contract basis, Motorola Inc. offers comprehensive maintenance and
installation programs that enable customers to meet requirements for reliable,
continuous communications.
To learn more about the wide range of Motorola service programs, contact your local
Motorola products representative or the nearest Customer Service Manager.
Product Identification
Motorola products are identified by the model number on the housing. Use the entire
model number when inquiring about the product. Numbers are also assigned to
chassis and kits. Use these numbers when requesting information or ordering
replacement parts.
Product Names
Product name included in V551/V555 telephone is listed on the front cover. Product
names are subject to change without notice. Some product names, as well as some
frequency bands, are available only in certain markets.
Regulatory Agency Compliance
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following conditions:
• This device may not cause any harmful interference, and
• must accept interference received, including interference that may cause
undesired operation.
This class B device also complies with all requirements of the Canadian
Interference-Causing Equipment Regulations (ICES-003).
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement
sur le matériel brouilleur du Canada.
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Introduction V551 GSM
Computer Program Copyrights
The Motorola products described in this manual may include Motorola computer
programs stored in semiconductor memories or other media that are copyrighted
with all rights reserved worldwide to Motorola. Laws in the United States and other
countries preserve for Motorola, Inc. certain exclusive rights to the copyrighted
computer programs, including the exclusive right to copy, reproduce, modify,
decompile, disassemble, and reverse-engineer the Motorola computer programs in
any manner or form without Motorola's prior written consent. Furthermore, the
purchase of Motorola products shall not be deemed to grant either directly or by
implication, estoppel, or otherwise, any license or rights under the copyrights,
patents, or patent applications of Motorola, except for a nonexclusive license to use
the Motorola product and the Motorola computer programs with the Motorola
product.
About this Service Manual
Using this service manual and the suggestions contained in it assures proper
installation, operation, and maintenance of the V551/V555 telephone. Refer
questions about this manual to the nearest Customer Service Manager.
Audience
This manual aids service personnel in testing and repairing the V551/V555
telephone. Service personnel should be familiar with electronic assembly, testing,
and troubleshooting methods, and with the operation and use of associated test
equipment.
Use of this manual assures proper installation, operation, and maintenance of
Motorola products and equipment. It contains all service information required for
the equipment described and is current as of the printing date.
Scope
The scope of this manual is to provide basic information relating to the V551/V555
telephone, and provide procedures and processes for repairing the phone at Level
1 and 2 service centers including:
•Unitswapout
• Repairing of mechanical faults
• Basic modular troubleshooting
•Testingandverification of phone functionality
• Initiate warranty claims and send faulty modules to Level 3 or 4 repair
centers

6809490A38-O September 28, 2004 5
Level 1 and 2 Service Manual Introduction
Conventions
Special characters and typefaces, listed and described below, are used in this
manual to emphasize certain types of information.
Warranty Service Policy
This product is sold with the standard 12-month warranty terms and conditions.
Accidental damage, misuse, and extended warranties offered by retailers are not
supported under warranty. Non-warranty repairs are available at agreed fixed
repair prices.
Out of Box Failure Policy
The standard out of box failure criteria applies. Customer phones that fail very
early on after the date of sale, are to be returned to Manufacturing for root-cause
analysis, to guard against epidemic criteria. Manufacturing will bear the costs of
early life failure.
Product Support
Customer’s original phone will be repaired but not refurbished as standard.
Appointed Motorola Service Hubs will perform warranty and non-warranty field
service for level 2 (assemblies) and level 3 (limited PCB component). The Motorola
High Technology Centers will perform level 4 (full component) repairs.
Customer Support
Customer support is available through dedicated Call Centers and in-country help
desks. Product Service training should be arranged through the local Motorola
Support Center.
➧Note: Emphasizes additional information pertinent to the subject
matter.
GCaution: Emphasizes information about actions that may result in
equipment damage.
EWarning: Emphasizes information about actions that may result in
personal injury.
MKeys to be pressed are represented graphically. For example, instead of “Press
the Menu Key”, you will see “Press M”.
Information from a screen is shown in text as similar as possible to what
appears in the display. For example, ALERTS or ALERTS.
Information that you need to type is printed in boldface type

6September 28, 2004 6809490A38-O
Introduction V551 GSM
Parts Replacement
When ordering replacement parts or equipment, include the Motorola part number
and description used in the service manual.
When the Motorola part number of a component is not known, use the product model
number or other related major assembly along with a description of the related
major assembly and of the component in question.
In the U.S.A., to contact Motorola, Inc. on your TTY, call: 800-793-7834
Accessories and Aftermarket Division (AAD)
Replacement parts, test equipment, and manuals can be ordered from AAD.
To order spare parts in EMEA region call [phone].
To order spare parts in Asia region call [phone].
U.S.A. Outside U.S.A.
Phone: [phone] Phone: [phone]
FAX: [phone] FAX: [phone]

6809490A38-O September 28, 2004 7
Level 1 and 2 Service Manual Specifications
Specifications
General Function Specification
Frequency Range GSM 850 824-848 MHz Tx
869-893 MHz Rx
Frequency Range GSM 900 880-915 MHz Tx (with EGSM)
925-960 MHZ Rx
Frequency Range DCS 1800 1710-1785 MHz Tx
1805-1880 MHz Rx
Frequency Range PCS 1900 1850-1910 MHz Tx
1930-1990 MHz Rx
Channel Spacing 200 kHz
Channels 174 EGSM, 374 DCS, 374 PCS, carriers
with 8 channels per carrier
Modulation GMSK at BT = 0.3
Transmitter Phase Accuracy 5 Degrees RMS, 20 Degrees peak
Duplex Spacing 45 MHz GSM, 95 MHz DCS, 80 MHz PCS
Frequency Stability ± 0.10 ppm of the downlink frequency (Rx)
Operating Voltage
+3.0V dc to +4.2V dc (cell)
+4.4V dc to +6.6V dc (external charger jack
with 2.4 K ohm resistor)
Average Transmit Current 310 mA max
Average Stand-by Current 4.0 mA max (DRX2), 3.0 mA max (DRX9)
Dimensions 108mm x 46mm x 20.5mm
(4.25 inches x 1.81 inches x 0.81 inches)
Size (Volume) 89 cc (5.43 in3)
Weight 110 gm (3.5 oz) with cell
Temperature Range -10° C to +55° C (+15° F to +130° F)
Battery Life, 790 mAh Li Ion Battery Talk time 220 - 425 mins
Standby time 180 - 225 Hrs.
All talk and standby times are approximate
and depend on network configuration,
signal strength, and features selected.
Standby times are quoted as a range from
DRX=2 to DRX=9. Talk times are quoted
as a range from 50% DTX high power to
low power.
Transmitter Specification
RF Power Output
33 dBm nominal GSM 850
33 dBm nominal GSM 900
30 dBm nominal GSM 1800
30 dBm nominal GSM 1900
Output Impedance 50 ohms nominal
Spurious Emissions -36 dBm from 0.1 to 1 GHz,
-30 dBm from 1 to 4 GHz
Receiver Specification
Receive Sensitivity
-106 dBm GSM 900,
-104 dBm GSM 1800,
-104 dBm PCS
RX bit error rate (100k bits) Type II < 2%
Channel Hop Time 500 microseconds

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Specifications V551 GSM
Time to Camp Approximately 5-10 seconds
Speech Coding Function Specification
Speech Coding Type Regular pulse excitation / linear predictive coding
with long term prediction (RPE LPC with LTP)
Bit Rate 13.0 kbps
Frame Duration 20 ms
Block Length 260 bits
Classes Class 1 bits = 182 bits; Class 2 bits = 78 bits
Bit Rate with FEC Encoding 22.8 kbps
Receiver Specification

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Level 1 and 2 Service Manual Product Overview
Product Overview
Motorola V551/V555 telephones are small and lightweight global system for mobile
communications (GSM) general packet radio service (GPRS) wireless application
protocol (WAP)-enabled mobile phones and enhanced Data Rate for Global
Evolution (EDGE). The V551/V555 incorporate a new user interface (UI) for easier
operation, allows short message service (SMS) text messaging, and includes
personal information manager (PIM) functionality.
The V551/V555 is a quad-band phone that allows roaming within the GSM 900
MHz, (DCS) 1800 MHz digital cellular system, the GSM 850 MHz, and PCS 1900
MHz bands.
V551/V555 telephones support EDGE in addition to traditional circuit switched
transport technologies.
V551/V555 telephones have a clam form factor. They feature an externally viewable
96 x 32 pixel display for caller identification and date/time, an internal 176 x 220
pixel display, and single speakers located in the flip. The bottom part of the clam
(front housing) contains the keypad, transceiver printed circuit board (PCB),
microphone, flex connection, external accessory connector, smart button, volume
buttons, and voice button. The standard 790 mAh Lithium Ion (Li Ion) battery fits
behind a removable back cover.
The phone accepts both 1.875V and 3V mini subscriber identity module (SIM) cards
which fit into the SIM holder underneath the battery. The antenna is a fixed stub
type antenna. Inexpensive direct connection to a computer or handheld device via
RS232 or USB for data and fax calls, and for synchronizing phonebook entries with
TrueSync® software, can be accomplished by using the optional data cable and soft
modem.
Features
V551/V555 telephones use advanced, self-contained, sealed, custom integrated
circuits to perform the complex functions required for EDGE communication. Aside
from the space and weight advantage, microcircuits enhance basic reliability,
simplify maintenance, and provide a wide variety of operational functions.
Features available in this family of telephones include:
• Integrated high audio hands-free speakerphone
• Dedicated on off speakerphone button
• Quad-Band
• Multi-Media Messaging (MMS)
• Integrated digital camera (VGA quality) with zoom and brightness adjustment
• One polyphonic speaker w/ MP3, MIDI, & WAV ringers
• Stylish and Ergonomic design
• 5 megabytes of end user memory
• Large, active color display (176 x 220, 65K)
• External CLI display (96x32, with blue backlight)
• Games (embedded & downloadable)
• PIM functionality with Picture Caller ID
• Downloadable themes (ringers, images, animations)

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Product Overview V551 GSM
Personal Information Management
The V551/V555 telephone contains a built-in datebook with alarm reminders,
message center, and a phonebook.
Other Features
Detailed descriptions of other features available for the V551/V555 wireless
telephone are in the appropriate V551/V555 GSM User’s Guide listed in the Related
Publications section toward the end of this manual.

6809490A38-O September 28, 2004 11
Level 1 and 2 Service Manual General Operation
General Operation
Controls, Indicators, and Input/Output (I/O) Connectors
The V551/V555 telephone controls are on the front of the device and on the keyboard
as shown in Figure 1. Indicator icons are displayed on the LCD (see Figure 2).
Menu Navigation
The V551/V555 telephone has a simplified icon and GUI. See Figure 3 for the V551/
V555 menu structure. A scroll key allows you to move easily through menus.
Liquid Crystal Display (LCD)
The V551/V555 phone features a 176 x 220 color display offering 3 lines of text, 1
line of icons, and 1 line of prompts. The display provides constant graphical
representations of battery capacity and signal strength, as well as the real-time
clock.
Figure 1. Controls and Indicators
040488a
Left Soft Key
Perform function
in lower left
display.
Volume Keys
Camera Key
Voice Key
Headphone
Connector
Smart Key
Power & End
Key
Turn phone
on/off, end calls,
exit menu
system.
Menu Key
Send Key
Make & answer
calls.
Browser Key
Right Soft Key
Perform function
in lower right
display.
5-Way
Navigation Key
Scroll to items.
Accessory
Connector

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General Operation V551 GSM
Display animation makes the phone’s icon menu move smoothly as you scroll up
and down.
Figure 2 shows common icons displayed on the LCD.
1. Status Icons show the status of your phone.
2. Real-Time Clock shows the current time.
3. Date shows the current date.
4. Soft Key Labels provide selectable options in screen display.
User Interface Menu Structure
Figure 3 shows the V551/V555 telephone menu structure.
➧Whether a phone displays all indicators depends on the programming and services
to which the user subscribes.
Figure 2. V551/V555 Display Idle Screen
e
n
à
s
—
Date Messages
Browser
Clock
Right Soft Key
Label
Menu Indicator
Recent Calls
Phonebook
Left Soft Key
Label
Service Provider
10/15/03
STYLES CAMERA
Status Icons

6809490A38-O September 28, 2004 13
Level 1 and 2 Service Manual General Operation
Menu Map
1MainMenu 2 3 Settings Menu 4
n Phonebook
s Recent Calls
• Received Calls
• Dialed Calls
• Notepad
• Call Times
• Call Cost *
• Data Times
• Data Volumes
e Messages
• Create Message
• Email Msgs
• Message Inbox
•Voicemail
•BrowserMsgs
• Info Services *
• Quick Notes
• Outbox
• Drafts
• MMS Templates
É Office Tools
• SIM Tool Kit Apps *
•Calculator
• Datebook
•Shortcuts
• Voice Records
• Alarm Clock
• Dialing Services
• Fixed Dial
• Service Dial *
• Quick Dial *
• Chat
Q Games & Apps
á Web Access
•Browser
• Web Shortcuts
• Stored Pages
•History
• Go To URL
•BrowserSetup
• Web Sessions
h Multimedia
•Themes
• Camera
•Pictures
• Sounds
• MotoMixer
•Videos
ã IM
•SignOn
• Offline Conversations
• Offline Settings
•Help
w Settings
• (see next page)
* optional features
This is the standard main menu
layout. Menu organization and
feature names may vary on
your phone. Not all features
may be available on your
phone.
l Personalize
• Home Screen
•MainMenu
•Skin
• Greeting
• Wallpaper
• Screen Saver
• Quick Dial
t Ring Styles
•Style
•style Detail
L Connection
• Bluetooth Link
•Sync
H Call Forward
• Voice Calls
•FaxCalls
• Data Calls
•CancelAll
• Forward Status
U In-Call Setup
•In-CallTimer
• Call Cost Setup *
• My Caller ID
• Talk and Fax
• Answer Options
• Call Waiting
Z Initial Setup
• Time and Date
• 1-Touch Dial
• Display Timeout
• Backlight
• TTY Setup
•Scroll
• Language
• Battery Save
• Brightness
•DTMF
•MasterReset
• Master Clear
m Phone Status
• My Tel. Numbers
• Credit Info/Available *
• Active Line *
• Battery Meter
• Other Information
S Headset
• Auto Answer
• Voice Dial
J Car Settings
• Auto Answer
• Auto Handsfree
• Power-off Delay
• Charger Time
j Network
• New Network
• Network Setup
• Available Networks
• My Network List
• Service Tone
• Call Drop Tone
u Security
• Phone Lock
• Lock Application
• Fixed Dial
• Restrict Calls
•SIMPIN
•NewPasswords
• Certificate Mgmt
c Java Settings
• Java System
• Delete All Apps
• App Vibration
•AppVolume
•AppPriority
• App Backlight
• Set Standby App
• DNS IP
* optional features
Figure 3. V551/V555 Menu Structure

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General Operation V551 GSM
Alert Settings
The Motorola V551/V555 phone incorporates the VibraCall®discreet vibrating alert
that helps to avoid disturbing others when a ringing phone is unacceptable.
Alerts can be set to ring only, vibrate only, vibrate then ring, or no ring or vibrate.
Battery Function
Battery Charge Indicator
The telephone displays a battery charge indicator icon in the idle screen to indicate
the battery charge level. The gauge shows 4 levels: 100%, 66%, 33%, and Low
Battery.
Battery Removal
Removing the battery causes the phone to shut down immediately and loose any
pending work. For example, (partially entered phonebook entries or outgoing
messages).
Operation
For detailed operating instructions, refer to the appropriate User’s Guide listed in
the Related Publications section toward the end of this manual.
EAll batteries can cause property damage and/or bodily injury such as burns if a
conductive material such as jewelry, keys, or beaded chains touch exposed terminals.
The conductive material may complete an electrical circuit (short circuit) and
become quite hot. Exercise care when handling any charged battery, particularly
when placing it inside a pocket, purse, or other container with metal objects.
GIf the battery is removed while receiving a message, the message is lost.
➧To ensure proper memory retention, turn the phone OFF before removing the
battery. Immediately replace the old battery with a fresh battery.

6809490A38-O September 28, 2004 15
Level 1 and 2 Service Manual Tools and Test Equipment
Tools and Test Equipment
Table 1 lists the tools and test equipment used on the V551/V555 telephone. Use
either the listed items or equivalents.
Table 1. General Test Equipment and Tools
Motorola
Part Number1Description Application
See Table 5. Charger Used to charge battery and power phone.
0180386A82
Antistatic Mat Kit (includes 66-80387A95 antistatic
mat, 66-80334B36 ground cord, and 42-80385A59
wrist band)
Provides protection from damage to phone caused
by electrostatic discharge (ESD).
6680388B67 Disassembly Tool, plastic with flat and pointed
ends (manual opening tool) Used during assembly/disassembly.
6680388B01 Tweezers, plastic Used during assembly/disassembly.
RSX4043-A Torque Driver Used to remove and replace screws.
—Torque Driver Bit T-6 Plus, Apex 440-6IP Torx Plus
or equivalent Used with torque driver.
HP34401A2Digital Multimeter Used to measure battery voltage.
1. To order in North America, contact Motorola Aftermarket and Accessories Division (AAD) by phone at [phone] or
FAX [phone]; Internationally, you can reach AAD by phone at [phone] FAX [phone].
2. Not available from Motorola. To order, contact Hewlett Packard at [phone].
1 and 2
6809490A38-O
V551 GSM

16 September 28, 2004 6809490A38-O
Disassembly V551 GSM
Disassembly
This section describes how to disassemble a V551/V555 telephone. Tools and
equipment used are listed in Table 1.
Removing and Replacing the Battery Cover
1. Ensure the phone is turned off.
2. Press down on the battery cover latch on the bottom of the phone, and gently
slide the battery cover back away from the phone and lift it off (see Figure 4).
3. To replace, align the battery cover with the rear housing.
4. Place the battery cover on the rear housing and gently slide the battery cover
up into position until it snaps into place.
GMany of the integrated devices used in this phone are vulnerable to damage from
ESD. Ensure adequate static protection is in place when handling, shipping, and
servicing any internal components.
GAvoid stressing the plastic in any way to avoid damage to either the plastic or
internal components.
Figure 4. Removing the Battery Cover
Battery Cover
Latch
Location
Slide Battery Cover Back

6809490A38-O September 28, 2004 17
Level 1 and 2 Service Manual Disassembly
Removing and Replacing the Battery
1. Remove the battery cover as described in the procedures.
2. Lift the top end of the battery as indicated by the arrow in Figure 5.
3. Lift the battery up and out of the battery compartment.
4. To replace, insert the bottom of the battery into the battery compartment with
contacts facing downward.
5. Press the top of the battery into the battery compartment.
6. Replace the battery cover as described in the procedures.
Figure 5. Removing and Replacing the Battery
EThere is a danger of explosion if the Lithium-Ion battery is replaced incorrectly.
Replace only with the same type of battery or equivalent as recommended by the
battery manufacturer. Dispose of used batteries according to the manufacturer’s
instructions.
Battery
1

18 September 28, 2004 6809490A38-O
Disassembly V551 GSM
Removing and Replacing the SIM Card
1. Remove the battery cover and battery as described in the procedures.
2. Slide the SIM card clip forward and lift the SIM card out
3. To replace, insert the SIM card into the SIM card holder with the "cut" corner
located as shown and slide the SIM card clip back down, locking the SIM card
in place.
4. Replace the battery and battery cover as described in the procedures.
Figure 6. Removing and Replacing the SIM Card
SIM Card Clip
SIM Card
Cut Corner