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Ares Communications Technology., INC. FILE : 2049 service manual level3 v1.4 ENG.DOC
Service Manual (level 1~3)
DB 2049
COPYRIGHT, ARES INC, THIS NOTICE DOES NOT IMPLY PUBLICATION." ARES
CONFIDENTIAL PROPRIETARY." THIS DRAWING ON THIS PRINT AND INFORMATION
THEREWITH ARE PROPRIETARYTO ARES INC., AND SHALL NOT BE USED OR
DISCUSSED IN WHOLE OR IN PART WITHOUT ARES'S CONSENT."
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Ares Communications Technology., INC. FILE : 2049 service manual level3 v1.4 ENG.DOC
Record
Rev. Notes Issue Date
1.0 New release Shyang Lin 2002.07.20
1.1 Update drawing, circuit. Shyang Lin 2002.10.19
1.2 ID drawing update, Shyang Lin 2002.12.17
1.3 Update: Exploded Parts Diagram, electronic circuit Shyang Lin 2003.02.06
diagram, ver. 4.31
1.4 service-load changed into ver 2.3 for update Shyang Lin 2003.03.24
Approved By Issued By
Shyang Lin
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Contents
1. Introduction 4
1.1 Brief Introduction 4
1.2 Reminder of the Safety 4
2. DB2049 Brief Industroduction 5
2.1 Appearance of the DB 2049 5
2.2 Specification list 6
2.3 Accessories 8
3. Operatio Interface 9
3.1 Display interface 9
3.2 Function Keys 10
3.3 Operation Menu 11
4. Disassembly & Assembly 17
4.1 Brief Introduction to Disassembly and Assembly 17
4.2 Recommended Tool 17
4.3 Disassembly Procedures 18
4.4 Assembly Procedures 21
4.5 Exploded Parts Diagram and Parts List for Each Portion 24
5. Repair & Test 25
5.1 Basic Knowledge of the Mobile Phone Repair 25
5.2 Brief Introduction to DB 2049 Repair 26
5.3 DB 2049 Mechanism Repair 27
5.4 Manual Test Instructions 27
5.5 Basis Circuit Module Trouble Shooting 29
5.6 Simple Repair Flow 58
5.7 Detection after the Mobile Phone Is Repaired 62
5.8 Software Update 63
5.9 Function Test and Verification 80
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1. Introduction
1.1 Brief Introduction
This Service Manual is provided for the user, engineering personnel, to know the basic information of
the DB 2049 inclusively about configuration, circuitry, operation interface, features and functions, and
simple repair.
1.2 Reminder of the Safety
1.2.1 For Portable Mobile Phone
When you use the mobile phone to talk, do not have your body excessively close to or touch the
antenna, especially your face or eyes. When you communicate by mobile phone with the other
party, please follow a correct method to hold the mobile phone, and prevent the antenna from
directing your head for your security and health.
Do not use the mobile phone on a plane. Before you board a plane, turn off the mobile phone.
When the plane does not take off or just lands, please keep the regulations about mobile phone use
made by the airline company.
1.2.2 For Car-Use Mobile Phone
For security of the operation, all the equipment must be grounded in accordance with the
instructions.
When you stay at a gas station, switch off your mobile phone. All drivers should think highly of
safety. A mobile phone may be used only when the driver stays at a safe place.
On the way you drive do not use the mobile phone in order for your security.
1.2.3 For General Use
Do not allow the children to play with the radio communication equipment with a transmitter.
Never use a mobile phone near a place with electric sparks or an explosion probably happening.
At a certain situation, a mobile phone may interfere with electromagnetic communication.
When you work near one of the places described above, pay attention to a sign saying "No Radio
Mobile Transmission". If there is such a sign, you must turn off your mobile phone for fear of its
signal transmission.
If you do not switch off the mobile phone, the mobile at a stand-by mode may still transmit a
signal automatically.
Refer to the applicable chapters and sections in the user manual to get the related information.
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2. Brief Introductiom to the 2049
2.1 Appearance of the 2049
17
16 15
1
3
10 5
11 13
6
7
12 4
8
9
Item Name of the Part Remarks
1 Insert rubber 14 2
2 Microphone hole
3 Rear housing of the phone
4 Battery cover
5 Front housing of the phone
6 Direction key
7 operating key
8 power/clear key
numeric key/character
9 key/specific key
10 LENS
11 LCD
12 calls key
13 Concealed antenna
14 External interface
15 Strap hole
16 Buzzer hole
17 Receiver hole
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2.2 Specification List
2.2.1 Specification Available
Item Requirements
3
Dimension 99.8x44.4x21 (mm ), with a standard battery
Weight Around 74.5g
Plastic material ABS or ABS-PC
Power supply 3.7V (normal), 4. 2V (max.)
Battery voltage 3.7V (normal), 600mAH (Min.), for a standard battery
5.0V (normal), AC/DC battery charger
Transmission power GSM900 Max. 2W(Class 4)
DCS1800 Max. 1W(Class 1)
talking time for a standard 22.5 hrs., (2W, no DTX)
battery
stand-by time for a standard >150 hrs.
battery
Charging time (Ultra battery) Around 2.5 hrs.
Phone book 50 groups of phone book built in the phone
100 groups of phone book embedded in the SIM card
Vibrator Vibration while a call is recieved
LCD 101 x 64 dots-plotted LCD, including 3 lines of
software plot (TBD)
keypad 12 numeric keys, 2-direction key, 2 function keys, 1
calls key, 1 power /clear key
backlighting LCD backlightinged: orange color
Keypad backlightinged:orange color
external interface Battery base
SIM card base
Outlet for hands-free speakerphone
Charging interface
antenna resistance 50
clock embedded
charging control DC charging controller embedded
operating temperature -10