DBTEL DB-6568 User manual

DB-6568 Service ManualLevel 1 ~ 32003.11.13
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DBTEL Incorporated
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DB-6568 Service ManualLevel 1 ~ 32003.11.13
DBTEL Copyright Reserved
DBTEL Incorporated
2
DB6568
Level 1 ~ 3Sevice Manual
2003/11/13
目錄
1. General 3
1.1 Introduction..................................................................................................................................4
1.2 Safety Notes ................................................................................................................................4
1.2.1 Handheld..................................................................................................................................4
1.2.2 Mobile/Portable–Vehicle..............................................................................................................4
1.2.3 General safe notes .....................................................................................................................5
2. Db6568 introduction 6
2.1 Db6568 Cosmetic Diagram ............................................................................................................7
2.2 General Specification.....................................................................................................................8
2.3 Electrical Specification List...............................................................................................................9
3. Function Table 10
3.1 Useful Menu Tree.........................................................................................................................11
3.1.1 Phone Book.............................................................................................................................12
3.1.2 Short Message ........................................................................................................................12
3.1.3 Call Records ............................................................................................................................12
3.1.4 Service ..................................................................................................................................13
3.1.5 Clock .....................................................................................................................................13
3.1.6 Settings .................................................................................................................................14
3.1.7 Miscellaneous .........................................................................................................................14
3.1.8 WAP.......................................................................................................................................15
4. Disassembly &Assembly 16
4.1 Introduction to disassemblyand assembly.........................................................................................17
4.2 Tools required..............................................................................................................................17
4.3 Exploding Diagram and Part List .....................................................................................................18
4.4 Disassembly steps .......................................................................................................................19
4.5 Assembly steps ...........................................................................................................................21
5. Troubleshooting & Testing 23
5.1 Basic knowledge of Handsets repair.................................................................................................24
5.1.1 Class of defect cause.................................................................................................................24
5.1.2 Class of Defect .........................................................................................................................25
5.1.3 Troubleshooting Steps................................................................................................................25
5.1.4 Basic Maintenance Environment ..................................................................................................27
5.2 Introduction of DB6568 Troubleshooting............................................................................................28
5.3 Mechanical Troubleshooting of DB6568............................................................................................29
5.4 Manual Test Command .................................................................................................................29
5.5 Basic Module Defects Analysis........................................................................................................32
5.6 Troubleshooting Procedures .......................................................................................................56
5.7 Test Items after Troubleshooting......................................................................................................62
5.8 SW Upgrade...............................................................................................................................64

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5.9 Function Test and Verification..........................................................................................................64
6. Accessories 65

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1. General
1.1 Introduction
1.2 Safety Notes
1.2.1 For Handset Users
1.2.2 For Mobility/Portability Phone Users–When Used inVehicles
1.2.3 General Safety Notes

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1.General
1.1Introduction
Thismanualis intendedfortechnicianswho arefamiliarwith similartypeofsuchdevice.Itcontains
all necessary service information for thedevice set forth below.
Thepurpose ofthisdocumentisto providetheuserswithbasic informationonDB-6568,andalsoto
provide the repairingprocedures up toLevel 3.。
Services Level 1 and 3 consist of the following sections: Level 1~3
lMechanical maintenance/repair
lManual test Command
lSoftware upgrading
lFunctional testing and verification
lBasic Module Failure Analysis
l
1.2 Safety Notes
1.2.1 Notes To Handheld Phone Users
lDONOT holdor touchorexpose partsof yourbody closeto antenna,especiallythe faceor
eyes while communications. You should use correct method while calls. For your healthy,
avoid directing the antenna to your head.
lDonotusehandsetwheninairplane.Switchedoffthephonebeforeboardinganaircraft.The
use of a cellular telephone in an aircraft may be dangerous to the operation of the aircraft,
disruption of the Cellular Network may occur and may be illegal.Don’tobeytoobserve this
instructionmayleadtosuspensionordenialofCellularTelephoneServicetotheoffender,or
legal action, or both.
1.2.2 Notes To Mobility/Portability Phone Users–When Used in Vehicles
lAllequipmentmustbeproperlygroundedaccordingtoinstallationinstructionsforyoursafety.
lUsersareadvisedtoturnofftheequipmentwhenatarefuelingpoint.Driverisresponsiblefor
the road safety. Cellular phones should only be used under situations in which the driver
considers it is safe .

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1.2.3 General Notes
lKeep the mobile phone out of children’sreach.
lDONOToperatethephonewheninanyareawithapotentiallyexplosiveatmosphere.Sparks
in such areas could cause an explosion or fire resulting in bodily injury or even death.
lMobileTelephonesare,undercertainconditions,capableofinterferingwithelectromagnetic.
lSwitchoffthe phonewhenyouarein thevicinityof suchworkplaceif anyregulationsposted
in these areas instruct you to do so.
lMobile telephone will automatically transmit or receiving signalifitisnotturnedoffevenin
standby mode.
lRefer to the related section of the user manual for this product for additional related safety
information.
All equipment should only be serviced/repaired by DBTEL qualified technician.

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2.DB-6568 Introduction
1.3 DB-6568 Cosmetic Diagram
1.4 Specifications List
1.5 Electrical Specifications List

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2. DB-6568 Introduction
2.1 DB6568 Cosmetic Diagram

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2.2 DB-6568 Specification List
Item Reference Specification
lSize = 55 cc with Standard battery pack
lWeight = 70gr± 10% with Standard battery pack
lPlastic Material ABS or ABS-PC
lPower Supply 3.8V nominal, 3.4V minimum
lBattery Voltage 2.8V nominal,Capacity 600mAH.( Standard
battery)
4. 2VAC/DC Charger
lTransmitted Power GSM900 Max. 2W (Class 4)
DCS1800 Max. 1W (Class 1)
lTalk Time(using
StandardBattery) GSM900 = 2 hours(2W, no DTX)* DCS1800= 2 hours(W, no DTX)*
lStandby Time(using
StandardBattery)
(in good signal intensity)
GSM900 = 100 hours(BSPA=2)* DCS1800 = 100 hours(BSPA=9)*
lCharging Time = 120 minutes ( 90% capacity)
lPhone Book 100 sets Phone Book embedded in handset
200 sets Phone Book embedded inSIM
lVibrator Vibration for Call Alert
lLCD Display 128x128dots Full Graphic LCD
4 line including soft icons
lKey pads 12Telphonekeys;Up/Down,Power,
Softbutton,
fast menu。
lBacklight LCD and keypad backlight
lExternal Interface Battery connector
SIM holder and connector
Hand free connector
Accessories
lRTC Clock Built-in
lCharging Control Built-in DC charging control
lOperating Temperature -10°C to +55°C
-10°C to +55°C
lStorageTemperature -40°C to +85°C
lStorage Humidity 0 to 90%
＊Is up to local network
＊１Is up to system service vender

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2.3 Electrical Specifications List
Item Reference Specification
lChannel Bands
GSM900 Transmitted
Bands
GSM900 Received Bands
DCS1800 Transmitted
Bands
DCS1800ReceivedBands
880 –915 MHz
925 –960 MHz
1710-1785MHz
1805-1880MHz same as left
lChannel Numbers
GSM900
DCS1800
124 channels
374 channels same as left
lMultiplexing Time Slot 8 channels TDMA same as left
lChannel Spacing 200KHz
lModulation Type GMSK, BT=0.3
lTransmission Rates 270.833 kb/s
lSpeech codes FR –13kbps
EFR –13kbps
AMR
lCommunication Control
Protocol GSM Phase 2+
FrequencyStability(
instatic
condition)= ± 0.1ppm = ± 0.1ppm
lTransmitted Phase Error = 5° RMS
= 20° PEAK = 5° RMS = 20° PEAK
lRF Output Power
GSM900
DCS1800
+33dBm ± 2.0dB(Class 4)
+30dBm ± 2.0dB(Class 1)
+32dBm ± 0.6 dB
+29dBm ± 0.6dB (at RF Interface)
lRF Output Power Control
GSM900
DCS1800
15 levels in 2 dB steps
16 levels in 2 dB steps
lRF Sensitivity
EGSM900
DCS1800
= -102dBm
= -102dBm
Except static condition
= -105dBm (Static, Conducted)
= -103dBm (Static, Conducted)
lRinging Tone Output = 94dB(A) at 10cm (max. Level)

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3.Function List
3.1Useful Function List
lDB6568
l3. Menu Tree Table

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3.1 Menu Tree function Table
服务
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
Call Meters
Phone Books
Screen
Function
LIST
Date&Ti
Mode
Setting
Message
Extras
Wap
STK

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1 Phone book
Search Edit
Save
Delete
Copy
Group setting
Send
Add New
Group Setting Family
Friend
Workmate
VIP
Others
Copy Manual Select Erase Original
Keep Original
Auto Select SIMAll
HandsetAll
Delete One Entry
Entries
SIMAll
HandsetAll
FamilyAll
FriendAll
WorkmateAll
VIPAll
Others
Fixed Dial Control On
Add new
View
Delete
Speed Dial View
Change
Delete
Phone Status SIM
Handset
2 Call Meters
Recent Call Missed
Received
Dialed
Calling Display Call Timer Dialed
Received
Lifetime
Finally Call
Timer Reset
Call Charge
Money Balance
Call Setting Call Money Setting
During Call Off
Time
Cost
Time &Cost
CallAlert Off
1 Minute
Auto Set

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3 Screen
WallpapersChang Everyday Activate
Settings
Fix Activate
Settings
Background Blue
Gray
Green
Orange
Pink
Purple
Rainy
Red
Cream
Sand
Contrast Level 1 –5
Back-light Duration10 Seconds
15 Seconds
30 Seconds
WelcomeNote Save
Delete
4 Mode
General Activate
Settings CallAlert
Ringing Tone
Volume Level
Key Volume
Silent Activate
Settings CallAlert
Ringing Tone
Volume Level
Key Volume
Meeting Activate
Settings CallAlert
Ringing Tone
Volume Level
Key Volume
Outdoor Activate
Settings CallAlert
Ringing Tone
Volume Level
Key Volume
Customzied Activate
Settings CallAlert
Ringing Tone
Volume Level
Key Volume
Rename Save
Delete

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5 Date &Time
Alarm Off
Once Set Time
Everyday Set Time
Calendar Set Date
Date & Time Set Date
Set Time
Display Mode No Display
Date Only
Time Only
Date & Time
Power Off Off
Once Set Time
Everyday Set Time
Power On Off
Once Set Time
Everyday Set Time
Date & Time Format Date Format YYYY/MM/DD
DD/MM/YYYY
MM/DD/YYYY
Time Format 12 Hour
24 Hour
Stopwatch
Count Down Set Timer
Time Zone View
Change

Menu Map
16
6Settings
Normal SettingsLanguage English
繁體中文
简体中文
Input Method Upper Case
Lower Case
Smart English
Number Input
Voice Volume Earpiece Volume
Earphone Volume
Key Lock Auto
Keypad Lock Now
Anykey Answer Off
On
AutoAnswer Off
On
Factory Settings
Call SettingsOwn Number Sending Off
Sending On
Automatic Redial Off
On
Call Divert All Calls
When Busy
No Reply
No Response
CancelAll
Call Barring All Calls
Outgoing Int.
Out Ex Home
All Calls
When Roaming
CancelAll
Call Waiting Status
Activate
Deactivate

Menu Map
17
Network SettingsPreferred Register
Delete
Move
AddAvailable
Select Mode Auto Search
Manual Search
Security SettingsPin Lock On
Off
Change PIN
Change PIN2
Phone Lock On
Off
Change Code
Short Cut Key Up Key Long
Down Key Long
Left Key Long
Right Key Long
7Extras
Calculator
JAVATM JAVATM List
About JAVATM
Games FiveChess
Redcap
Blackjack
Tank War
Game Setting Volume
Schedule Notebook View Today Records
Everyday
Every Week
Every Month
Every Year
All Records
Add new Edit
Detail set
Save
Delete One Entry
All Records
Data Download Area Download Melodies
Download Wallpapers

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8 Messages
Message
Inbox
Outbox
MESSAGE Draftbox
Write Message
Delete Select delete
Inbox
Outbox
Draftbox
DeleteAll
Voice Message Listen To Voice Message
Voice Mailbox Number
Broadcast Broadcast Off
On
Channel Show List
Add To List
SettingsValidity Period 1 Hour
6 Hours
12 Hours
1 Day
7 Days
15 Days
30 Days
SMS Center
9 WAP
Homepage
Bookmarks Bookmark 1-5
LastPage
Navigation
Empty Cache
Settings Profiles China Mobile
China Unicom
WAP Profiles 3
Features Image Download
Character Set
Bearer
History
10 STK
The availability depends on your network service provider.

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4.Disassembly & Assembly
4.1 Introduction To Disassembly & Assembly
4.2 Tool Required
4.3 Exploding Diagram &Parts List
4.4Disassembly Steps
4.5 Assembly Steps

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4. Disassembly &Assembly
4.1Introduction To Disassembly &Assembly
DB-6568 Housings: are tightened by 4screw nuts in Battery Slot。
The LCD is very fine part and easy to be broken, so be careful when disassemble it。
You must put on completely electrostatic protection wrist ring when disassemble and assemble
any handset。
Do not place any heavy object on mobile housings; or You will damage the mobile。
!!Notice!!
4.2 Tool Required
We suggested that use the following tools to disassemble and assembleDB-6568
ESD Protection Tools including：
nESD Protection Pad
nGrounded Wire
nGrounded Wrist Ring
nPlastic Blade
nT6Torx Screwdriver
nPliers
4.3 Exploded Parts Diagram
lDB6568
There are many handset components that easy to damage by ESD effects. Make sure that they have fully
ESD protection when operation、shipping、and troubleshooting。