Motorola oC81 Series User manual

Level 1 and 2 Service Manual
Product Family 0C81
Tri-Band Wireless Telephone
A388c
GSM 900/1800/1900 MHz & GPRS Technologies
M
DRAFT

6809462A54 September 03, 2002 3
Level 1 and 2 Service Manual Table of Contents
DRAFT
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Product Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Product Names . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Product Changes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Regulatory Agency Compliance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Computer Program Copyrights . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
About this Service Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Warranty Service Policy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Parts Replacement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
General Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Controls, Indicators, and Input/Output (I/O) Connections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Alert Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Battery Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Tools and Test Equipment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Disassembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Removing and Replacing the Stylus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Removing and Replacing the Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Removing and Replacing the Subscriber Identity Module (SIM) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Removing and Replacing the Antenna . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Removing and Replacing the Rear Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Removing and Replacing the Real Time Clock (RTC) Battery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Removing and Replacing the Alert Gasket . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Removing and Replacing the Light Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Removing and Replacing the Battery Latch . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Removing and Replacing the Main Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Removing and Replacing the Microphone . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Removing and Replacing the Keypad and Buttons . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Removing and Replacing the Touch Screen Display Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Removing and Replacing the Flip Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
SIM Cards and Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
SIM Card . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Personality Transfer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Manual Test Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Manual Test Mode Commands . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Troubleshooting Chart . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Programming: Software Upgrade and Flexing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Part Number Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Related Publications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Exploded View Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Exploded View Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Model-dependent Part Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Index . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Index-1
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Table of Contents
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Table of Contents Product Family 0C81
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6809462A54 March 21, 2003 5
Level 1 and 2 Service Manual Introduction
DRAFT
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 names included in Product Family 0C81 (A388c) telephones are 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.
Product Changes
When electrical, mechanical or production changes are incorporated into Motorola
products, a revision letter is assigned to the chassis or kit affected, for example:
-A, -B, or -C.
The chassis or kit number, complete with revision number is imprinted during
production. The revision letter is an integral part of the chassis or kit number and
is also listed on schematic diagrams and printed circuit board layouts.
Regulatory Agency Compliance
This device complies with Part 15 of the FCC Rules. Operation is subject to the
following conditions:
1. This device may not cause any harmful interference, and
2. 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 Product Family 0C81
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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 A388c telephones. Refer questions
about this manual to the nearest Customer Service Manager.
A product family is the group of products having the same account product code
(APC). To locate the APC on a device, refer to “Mechanical Serial Number (MSN)”
later in this manual.
Audience
This manual aids service personnel in testing and repairing A388c telephones.
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 document is to provide the basic information relating to A388c
telephones, and also to provide procedures and processes for repairing the units at
Level 1 and 2 service centers including:
•Unitswapout
• Repairing of mechanical faults
• Basic modular troubleshooting
• Testing and verification of unit functionality
• Initiate warranty claims and send faulty modules to Level 3 or 4 repair centers
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6809462A54 March 21, 2003 7
Level 1 and 2 Service Manual Introduction
DRAFT
Conventions
Special characters and typefaces, listed and described below, are used in this
manual to emphasize certain types of information.
Revisions
Any changes that occur after manuals are printed are described in publication
revision bulletins (PMRs). These bulletins provide change information that can
include new parts listing data, schematic diagrams, and printed circuit board
layouts.
Warranty Service Policy
The product comes 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 units 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 units 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 Tech Centers will perform level 4 (full component) repairs.
➧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 Enter 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 or ALERTS.
Information that you need to type is printed in boldface type

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Introduction Product Family 0C81
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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.
Ordering Replacement Parts
Only centers authorized to carry out repairs can purchase spare parts. Orders for
spare parts from hubs and Hi-Tech Centers should be placed with the regional
Motorola Parts Distribution Center.
Parts Replacement
When ordering replacement parts or equipment, include the Motorola part number
and description used in the service manual or supplement.
When ordering crystals or channel elements, specify the Motorola part number,
description, crystal frequency, and operating frequency desired.
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]

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Level 1 and 2 Service Manual Specifications
DRAFT
Specifications
General Function Specification
Frequency Range GSM 880-915 MHz Tx (with EGSM)
925-960 MHZ Rx
Frequency Range DCS 1710-1785 MHz Tx
1805-1880 MHz Rx
Frequency Range PCS 1850.2-1909.8 MHz Tx
1930.2-1989.8 MHz Rx
Channel Spacing 200 kHz
Channels 174 EGSM, 374 DCS, 274 PCS carriers with 8 ch. 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 +5.1V dc (battery)
+4.4V dc to +6.5V dc (external connector)
Transmit Current 170mA at RF power 15
280mA at RF power 5
Stand-by Current Typically 4.4 mA (DRX2), 8.3 mA (DXR9)
Dimensions 98 mm x 58 mm x 24 mm (3.8 inches X 2.3 inches X 0.9 inches)
Size (Volume) 115 cc (6.8 in3)
Weight 130 gm (4.5 oz)
Temperature Range -10° C to +55° C (+15° F to +130° F)
Battery Life, 800 mAh
Lithium Ion Battery
Talk Time 180 to 300 minutes
Standby 95 to 160 hours
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 DTX off to DTX on.
Transmitter Function Specification
RF Power Output 33 dBm nominal GSM, 30 dBm nominal DCS / PCS
Output Impedance 50 ohms nominal
Spurious Emissions -36 dBm from 0.1 to 1 GHz, -30 dBm from 1 to 4 GHz
Receiver Function Specification
Receive Sensitivity -105 dBm GSM, -103 dBm DCS, -104 dBm PCS
RX bit error rate (100k bits) Type II < 2%
Channel Hop Time 500 microseconds
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

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Product Overview Product Family 0C81
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Product Overview
Motorola A388c telephones are global system for mobile communications (GSM)
general packet radio service (GPRS) wireless application protocol (WAP)-enabled
mobile phones with full-featured personal information manager (PIM)
functionality. The A388c incorporates a large task-based touch screen display user
interface (UI) featuring handwriting recognition for email and short message
service (SMS) text messaging. It is a tri-band phone that allows roaming within the
GSM 900 MHz, digital cellular system (DCS) 1800 MHz, and personal
communications services (PCS) 1900 MHz bands.
A388c telephones support GPRS and SMS in addition to traditional circuit switched
transport technologies. GPRS, where available, provides substantial increases in
mobile data communications performance and efficient use of radio spectrum. Data
transmission rates for GSM networks can potentially increase from the current rate
of 9.6 kbps up to a theoretical maximum of 171.2 kbps. In addition to increased data
rate, GPRS provides a permanent virtual connection to the network. This “always
on” connection is possible because GPRS uses packet data transfer so that, for
example, email can be downloaded in “background mode” without need for the user
to reconnect before requesting a service. This eliminates connection setup delays
and adds convenience and immediacy to data services. The “virtual” nature of this
connection means network resources are not consumed during periods when a user
is not actually sending or receiving data.
A388c telephones have a clam form factor. They are made of a polycarbonate plastic
with the earpiece speaker located in the flip. The flip features a viewing window
that allows a portion of the display to be seen with the flip is closed. The bottom
part of the clam (front housing) contains the touch screen display, main printed
circuit board (PCB), microphone, external accessory connector, infrared (IR)
communications port, and headset jack. Also located in the front housing are the
voice, volume, power, page up, page down, and menu buttons, as well as the battery,
antenna, subscriber identity module (SIM) holder, and status light. A stylus, also
located in the front housing, is provided to aid manipulating the touch screen UI.
The battery and battery door are integrated into a single unit to minimize overall
phone thickness. The phone accepts both 3V and 5V mini SIM cards which fit into
the SIM holder beneath the battery. The antenna is a fixed stub type antenna. The
service indicator (status light) displays flashing green while in-service, flashing
amber when roaming, flashing red while out of service, and alternating red / green
when ringing.
Features
A388c telephones use advanced, self-contained, sealed, custom integrated circuits
to perform the complex functions required for GSM GPRS 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:
• Lower voltage technology that provides increased standby and talk times
• Extended GSM (EGSM) channels
• Tri-coder/decoder (CODEC) that allows full rate, half rate, and enhanced full
rate modes of transmission
• Supports SMS, concatenated SMS, and cell broadcast messages
• Supports GPRS, circuit switched, and SMS networks
• Supports POP3, IMAP4, MIME and SMPT email protocols

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Level 1 and 2 Service Manual Product Overview
DRAFT
• WAP 1.2.1 compliant
• 65K TFT Color touch screen liquid crystal display (LCD)
• Downloadable wallpaper, themes, screensavers and ring tones
• 7MB memory for user data
•J2ME
•VibraCall
®vibrating alert
• Voice recorder personal memo feature
• Icon driven user interface with handwriting recognition and on-screen
keyboards
• Supports caller ID
• Supports call forwarding for incoming voice, fax, and data calls
• Supports 3V and 5V SIM cards
• SIM Toolkit (STK), Class II
• Supports TrueSync®synchronization with most PC’s PIM’s or PDA’s
Speaker Dependant Voice Recognition and Voice Note Recording
This feature allows voice tags to be used for voice dialing up to 25 phone numbers
in the phone book and for creating up to 5 voice shortcuts for menu items. The phone
must be “trained” by the voice tag being read into the phone’s memory twice before
it is recognized.
Voice tags can be added to the phone’s memory using the usual name addition
methods (phone book menu structure or the shortcut editor).
A388c telephones also include a voice note recorder that allows up to 3 minutes of
personal messages to be recorded. This feature has a complete set of record,
playback, and management tools that make it easy to store and maintain a list of
personal memos.
Wireless Access Protocol (WAP) 1.2.1 Compliancy
In the WAP environment, access to the Internet is initiated in wireless markup
language (WML), which is derived from hypertext markup language (HTML). The
request is passed to a WAP gateway which retrieves the information from the server
in standard HTML (subsequently filtered to WML) or directly in WML if available.
The information is then passed to the mobile subscriber through the mobile
network.
The A388c’s microbrowser can be configured for baud, idle timeout, line type, phone
number, and connection type.
➧The user cannot place or receive calls while adding voice tags to the phone’s memory.
➧Because the GSM standard does not provide the option to store voice tags onto the
SIM card, voice tags are added to the phone’s memory.
➧Bitmap image data will download as text. If the image is larger than the screen,
only part of the image will display.

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Product Overview Product Family 0C81
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Caller Line Identification
Upon receipt of a call, the calling party’s phone number is compared to the phone
book. If the number matches a phone book entry, that name will be displayed. If
there is no phone book entry, the incoming phone number will be displayed. In the
event that no caller identification information is available, the Incoming Call
message is displayed.
Call Forwarding
Call forwarding is a network feature that diverts incoming calls to another phone
number if the user or phone is unavailable, or the user does not wish to receive calls.
This option can be used to:
• Divert all incoming voice calls unconditionally
• Divert incoming voice calls whenever the phone is unavailable, busy, not
reachable, or not answered
• Divert incoming fax calls
• Divert incoming data calls
• Allow all calls through to the phone.
Detailed operating instructions for these and the other A388c features can be found
in the appropriate A388c telephone user’s guide listed in the “Related Publications”
section toward the end of this manual.
➧When the user receives a call while in browser mode, the browser will pause and
allow the user to resume after completing the call.
➧User must subscribe to a caller line identification service through their service
provider.

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Level 1 and 2 Service Manual General Operation
DRAFT
General Operation
Controls, Indicators, and Input/Output (I/O) Connections
The A388c telephone’s controls are located on the front of the device
(see Figure 1). Controls on the front of the phone include a Power ON/OFF button,
Home Key, and a Up /Down key Soft Menu key on the left and right side. Indicators,
in the form of icons, are displayed on the LCD. Service status is indicated by a tri-
color light emitting diode (LED) (not shown) located on top of the phone.
Additionally, I/O connectors consisting of a headset jack and an accessory port are
located on the top and bottom of the phone, respectively. See Figure 1.
020035-o
Figure 1. A388c Telephone Controls, Indicators, and I/O
DOWN /
SOFT MENU KEY
UP /
SOFT MENU KEY
POWER ON/OFF
HOME KEY
CHARGER / DATA
PORT

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General Operation Product Family 0C81
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Menu Navigation
A388c telephones are equipped with a new user-friendly interface that employs 4
main menus. See Figure 2. Select each menu by tapping its tab on the right hand
side of the screen. Each menu contains up to six function icons that make up a
function group.
The tab represents the Communications Group.
The tab represents the Tools Group.
The tab represents the Setup Group.
The Setup Group allows you to configure and personalize the phone, as well as
providing the capability to connect the phone to other devices.
Liquid Crystal Display (LCD)
The color LCD provides a 65K TFT color touchscreen display. The display measures
240 x320 pixels.
The LCD screen displays the main menu icons and all of the function group icons.
You can navigate around the touch screen using the stylus to select the desired
functions.
Display animation makes the phone’s menus move smoothly as the user scrolls up
and down.
011660-o
Figure 2. A388c Menu Navigation
➧Whether a phone displays all indicators depends on the programming and services
to which the user subscribes.

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Level 1 and 2 Service Manual General Operation
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Figure 3 shows some common icons displayed on the LCD.
Figure 3. A388c Icon Indicators
Table 1. Icon Indicators and Description
Icon Description
Signal Strength Indicator. Shows the strength of the phone’s connection with the
network.
Antenna Off Indicator. Calls cannot be sent or received when the “antenna off”
indicator is displayed. The device is in PDA mode.
In Use Indicator. Appears when a call is in progress.
Roam Indicator. Appears when the phone uses another network system outside
the user’s home network. When leaving the home network area, the phone roams,
or seeks, another network.
GPRS Indicator. Appears when the phone is in GPRS mode.
0Message Waiting Indicator. Appears when the phone receives a text message or
voice message. This is a network-dependent feature.
Battery Level Indicator. Shows the amount of charge left in the battery. The more
segments visible, the greater the charge. Recharge the battery as soon as possible
when the Low Battery warning message appears.
Invalid Battery Indicator.
12:26 Clock. Shows the current time. This is a network-dependent feature.
Alert Setting Indicator. Shows the current selected alert. The default alert setting
is a ringer.

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Alert Settings
A388c telephones include up to 32 preset alert tones and vibrations that can be
applied to all alert events at the same time.
Battery Function
Battery Gauge
The telephone displays a battery level indicator icon in the idle screen to indicate
the battery charge level. The gauge shows four levels: 100%, 66%, 33%, and Low
Battery.
Battery Removal
Removing the battery causes the device to immediately shut down and any pending
work (for example, partially entered phone book entries or outgoing messages) is
lost.
Operation
For detailed operating instructions, refer to the appropriate User Guide listed in
the Related Publications section toward the end of this manual.
➧Pressing either volume key will mute the alert.
➧To ensure proper memory retention, turn OFF the phone before removing the
battery. Immediately replace the old battery with a fresh battery.
GIf the battery is removed while receiving a message, the message will be lost.

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Level 1 and 2 Service Manual Tools and Test Equipment
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Tools and Test Equipment
The following table lists tools and test equipment recommended for disassembly
and reassembly of A388c telephones. Use either the listed items or equivalent.
Table 2. General Test Equipment and Tools
Motorola Part Number1Description Application
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
See Table 6 Charger Used to charge battery and to power
device
0180386A82
Antistatic Mat Kit (includes 66-80387A95
antistatic mat, 66-80334B36 ground
cord, and 42-80385A59 wrist band)
Provides protection from damage to
device caused by electrostatic discharge
(ESD)
6680388B67 Disassembly tool, plastic with flat and
pointed ends
Used during assembly/disassembly of
device
6680388B01 Tweezers, plastic Used during assembly/disassembly
—2Tweezers, stainless steel, Type 2
pointed blade, Plato part number
TZF-401-2 or equivalent
Used for flip removal.
—3Digital Multimeter, HP34401A Used to measure battery voltage
8102430Z04 GSM / DCS Test SIM Card Used to enable manual test mode
1. To order in North America, contact Motorola Aftermarket and Accessories Division (AAD) at [phone];
Internationally, AAD can be reached by calling [phone] or faxing [phone].
2. Not available from Motorola. To order, contact Plato Products, Inc. at [phone].
3. Not available from Motorola. To order, contact Hewlett Packard at [phone].
1 and 2
6809462A54
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Disassembly
The procedures in this section provide instructions for the disassembly of a A388c
telephone. Tools and equipment used for the phone are listed in Table 2, preceding.
Removing and Replacing the Stylus
1. Grasp the stylus and pull straight out of the bottom of the telephone as shown
in Figure 4.
2. To replace, insert the stylus, pointed end first, into the styles holder on the
bottom of the telephone. Push until fully seated in the holder.
Removing and Replacing the Battery
1. Ensure the phone is turned off.
2. Slide the battery latch in the direction of the arrow as shown in Figure 5-1.
GMany of the integrated devices used in this equipment are vulnerable to damage
from electrostatic discharge (ESD). Ensure adequate static protection is in place
when handling, shipping, and servicing the internal components of this equipment.
GAvoid stressing the plastic in any way to avoid damage to either the plastic or
internal components.
011638-o
Figure 4. Removing the stylus
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 in handling any charged battery, particularly when
placing it inside a pocket, purse, or other container with metal objects.
STYLUS

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Level 1 and 2 Service Manual Disassembly
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3. While holding the battery latch open, lift the end of the battery and remove it
completely. See Figures 5-2 and 5-3.
4. To replace, align the battery with the battery compartment so the contacts on
the battery match the battery contacts in the phone.
5. Insert the tabs at the base of the battery into the slots at the bottom of the
battery compartment.
6. Push the top of the battery down until it snaps into place.
011639-o
Figure 5. Removing 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
BATTERY
LATCH
1
2
3
BATTERY
COMPARTMENT
BATTERY
CONTACTS

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Removing and Replacing the Subscriber Identity Module (SIM)
1. Remove the battery as described in the procedures.
2. Slide the SIM holder in the direction of the arrow (Figure 6-1) to unlock and
rotate (Figure 6-2) to open.
3. Carefully slide the SIM from its holder as shown in Figure 6-3.
4. To replace, insert the SIM into the holder, ensuring the keyed corner of the
SIM aligns with the notch molded into the holder.
5. Close the SIM holder and slide to lock.
6. Replace the battery as described in the procedures.
011640-o
Figure 6. Removing the SIM
SIM HOLDER
SIM
SIM CONTACTS
BATTERY
COMPARTMENT
2
1
3