Product Overview; Features - Motorola A840 Service Manual

Level 2 Service Manual

Product Overview

Features

1. 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.
6809485A78-O
Motorola A840 mobile telephones feature Code Division Multiple Access (CDMA)
technology. The mobile telephone uses a simplified icon and Graphical user
interface (GUI) for easier operation, allow Short Message Service (SMS) text
messaging, and include clock, alarm, datebook, calculator, and caller profiling
personal management tools. The A840 also has a built in camera. The phone
provides 32 Embedded ring tones including VibraCall vibrating alert and 32
Downloadable/Customizable iMelody ring tones. The A840 is a dual band, quad
mode phone that allow user roaming with a single handset between the 800/1900
MHz CDMA bands and the 900/1800 MHz GSM bands.
Manual switching between CDMA and GSM and GSM and CDMA is supported by
a soft button and icons to indicate mode of operation.
The A840 telephone consists of a main housing assembly and a flip assembly. The
phone has the main circuit board, battery, headset jack, and accessory connector in
the main housing assembly. The display and camera are located in the hinged flip
assembly.
The flip assembly contains the entire hinge mechanism. It is attached to the main
housing by four screws. The main display is on the inside of the flip assembly and
a LED display on the outside of the flip assembly. The main display is a 176 x 220
pixels, 262K color TFT LCD. The external display is a 96x64 pixel, 4K-color CSTN.
The camera is a 350K pixel, VGA CMOS Sensor Camera.
The main housing assembly includes a battery cover, chassis, main circuit board,
keypad and plastic front housing.
The main circuit board contains the Receiver, Transmitter, Synthesizer and Control
Logic Circuitry which together comprise the dual band tri-mode phone electronics.
The telephones are made of polycarbonate plastic with a metal enclosure. The
display and speaker, as well as the 18-key keypad, transceiver printed-circuit board
(PCB), microphone, charger and headphone connectors, and power button are
contained within the flip form-factor housing. The 750 mAh Lithium Ion (Li Ion)
battery provides up to 178 minutes of talk time in CDMA mode with up to 264 hours
1
of standby time .
A840 telephones use advanced, self-contained, sealed, custom integrated circuits to
perform the complex functions required for CDMA 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:
• 1.3 M-pixel Camera with Integrated Flash
• Multi-Media Messaging (MMS)
• Video clips capture & playback
• Self Portrait Viewfinder External Display
• 64 Polyphonic, 18mm Office Quality Speaker Phone, Stereo Headset Support
• Integrated MP3 Player, MP3 and MIDI Ringers
•
June 09, 2004
Product Overview
11