Service Manual

Service Manual Service Manual

Model : KKT27

Tech. Name:

Content

Specification

Method of SW Download

Circuit Description

Trouble Shooting

* Baseband Section* RF Section

* Main Board* Trouble Shooting

* Phone layout* Icons Status of KKT27 LCD* H/W Features * S/W Features

TEST Mode

Specification

* LCD Screen Display : Main : QVGA 2.8" TFT* Sub LCD Screen Display : N/A * Antenna : Internal (900/1800)* Camera: Camera 0.3M

SpecificationPhone layout -1Phone layout -1

SpecificationPhone layout -2Phone layout -2

Specification

Icon Description

Signal Strength : Shows the strength of the receiving signal. The greater the number of bars,

The better the signal strength

GPRS : Shows the strength of the receiving GPRS signal. The greater the number of bars, the better the signal strength.

GPRS Connect : Appears when you connect to GPRS.

Roaming : Appears when the phone is roaming

L1,L2 : Some SIM cards support two phone numbers and you can switch the number with this feature. The phone will display this icon when you set a line

Missed Calls : Appears when there is missed call (s)

New Message : Appears when a new incoming text message is arrived and unread

MMS Unread : Appears when a new MMS message is arrived and unread

MMS Busy : Appears when MMS is busy, such as receiving and sending a message

Broadcast Message : Appears when Broadcast Message receive mode is active

WAP Mail : Appears when WAP mail is arrived

Call Barring On : Appears when the call barring mode is active

Icons Status of SL388 LCD -1Icons Status of SL388 LCD -1

Specification

Icon Description

Call Forward : Appears when the call forward mode is active.

IrDA : Appears when the IrDA port is activated.

Ring : Appears when the Ring mode is active.

Vibrate and Ring : Appears when the Vibrate and Ring mode is active.

Vibrate then Ring : Appears when the Vibrate then Ring mode is active.

Vibrator On : Appears when the Vibration mode is active.

Silent Mode : Appears when the silent mode (manner mode) is active

Alarm On : Appears when you set the alarm.

Stopwatch : Appears when you set the stopwatch.

Lock : Appears when you set the phone lock.

Battery Strength : Shows the level of your battery. The more bars you see, the more power you have left

General : Appears when you set the sound & Light profile as General.

Meeting : Appears when you set the sound & Light profile as Meeting.

Icons Status of SL388 LCD-2 Icons Status of SL388 LCD-2

Specification

Icon Description

Outdoor : Appears when you set the Sound & Light profile as Outdoor.

Indoor : Appears when you set the Sound & Light profile as Indoor.

Headset : Appears when you set the Sound & Light profile as Headset.

Icons Status of SL388 LCD -3Icons Status of SL388 LCD -3

Specification

Feature Description

Dimension

Main LCD 2.8 TFT LCD (320x240)

Sub LCD N/A

Camera 0.3M

Flash Light No

Speaker Stereo (Single Speaker)

Vibrator Built – in vibrator

Antenna Internal

Phone Memory Internal : 64 MB

SIM 2.8V

BlueTooth Bluetooth V2.0 with EDR

FM Radio Recode Format : WAR,AMR

Data USB Connection and PC Link Manager

microSD

(T-Flash Card)%Use only genuine microSD(T-Flash) cards approved & specified by the SD card Association and SanDisk

H/W FeaturesH/W Features

Specification

Feature Description

RF GSM900 ,DCS1800 ,

GSM/GPRS GSM Phase 2 + Class 10 GPRS

Message MMS / EMS / SMS

WAP WAP 2.0 (Obigo Browser)

DRM DRM 1.1

Text Input T9 Intelligent Text Input

Camera 0.3m Camera

Video Video Record & Play ( MJpeg)

Wallpaper Pictures and user definable JPG, GIF, BMP

Sound 64 Polyphonic True Sound MIDI, iMelody, WAV, MP3

Games big tow 、 sokoban 、 tetris

TV – Out NO

Phonebook 500 ~ 1000 of Phonebook

ToolsCalendar, To-Do List, Alarm, Schedule Power On/Off, World Clock

Calculator, Unit Converter, Currency Converter, Health, Stopwatch

S/W FeaturesS/W Features

Calibration Data Upload (1)

Calibration Phone (1)

Circuit Description (Baseband Section)1. SC6531(GSM/GPRS Base band Processor)1. SC6531(GSM/GPRS Base band Processor)

Circuit Description (Baseband Section)

SC6531



3. 3. MX25U6435EZNI-10GMX25U6435EZNI-10G(64NOR Flash memory)(64NOR Flash memory)

Circuit Description (RF Section)

1. SC2661D (RF PA)1. SC2661D (RF PA)

Trouble Shooting

Main Board

Bottom Surface ComponentBottom Surface Component

Main Bord

Top Surface ComponentTop Surface Component

PCB LAYOUT (TOP – Reference)

PCB LAYOUT (Bottom – Reference)

Trouble Shooting1. Power on Repair chart1. Power on Repair chart

1. Check VBAT(3.8V) .

2. Check Voltage out .

If not ,Check the U0100 Defective or Cold solder

VSIM 1.8V/3.0V – C0231/C0230VMEM 1.8V- C0222VMEM_SPI 1.8V - C0221VCAM_ANA_2V8 2.8V – C0227VCAM_CORE_1V8_B 1.8V -C0226VDDIO_2V8 2.8V- C0223VDDSD 2.8V- C0228VDDRF 2.8V- C0206

3. Check the Output 26MHz Crystal (X0601)


5. Re download

If not . Change CPU (U0100)U100

U201

U500

OCS100

U500 U100

CON10

Trouble Shooting2. LCD Dead Repair chart (1)2. LCD Dead Repair chart (1)

1. Check the Connector LCD FPC,LCD

If not , Change the F-PCB,LCD

2. Check Voltage out . C0223(2.8V) or LCD 6PIN,7PIN

3. Check the EMI Filter data line. DB0~ DB7

If not ,Check the DB0 ~ DB7 Defective or Cold solder

and CPU (U0100) Defective.

U500 U100

U700

Trouble Shooting3. LCD Dead Repair chart – Touch Pannel (2)3. LCD Dead Repair chart – Touch Pannel (2)

1. Check the ,B’d To B’d FPCB,LCD Module

If not , Change the F-PCB,LCD

2. If not ,Check the U0100 Defective or Cold solder

Trouble Shooting4. SIM Error Repair chart4. SIM Error Repair chart

1. After insert SIM ,Check the LCD Display.

2. Check the voltage out. CONN. 1/6/11/16 PIN

(1.8V/3.0V)

If not ,Check the U0100 Defective or Cold solder.

U300

Trouble Shooting

1. Check the speaker Spring state on Rear Cover

If not good, Change the Speaker

2. Check the U0100

5. Melody Dead Repair chart5. Melody Dead Repair chart

CON130

Trouble Shooting

1. Check the MIC. MIC1

If not ,Check the MIC1 Defective or Cold solder.

2. Check the MICBIAS. R0501(1.9~2.3V)


3. Check the B0507, B0508 solder state.

If not ,Check the C0501, C0502 Defective or Cold solder

6. Audio Dead Repair chart - (1)6. Audio Dead Repair chart - (1)

Trouble Shooting7. Vibrator Dead Repair chart 7. Vibrator Dead Repair chart

U300

1. Check the Vibrator wire.

If not , Re-solder or Change

2. Check the U0100 Signal If not , Change the CPU (U0100)

Trouble Shooting8. Camera Dead Repair chart 8. Camera Dead Repair chart

U3001. Check the connector state or camera module.

If not ,Change the camera module

2. Check the DATE. CCIR_D00-SCCIR_D07

If not ,Change the U0100

3. Check the voltage. J861 6PIN (2.8V),95IN (1.8V)


4. Change the CPU. U0100

Trouble Shooting9. T-Flash Card Dead Repair chart 9. T-Flash Card Dead Repair chart 1. Check the T-Flash connect state.

If not Good, Change the T-Flash connect.

2. Check the voltage. C0228 (2.8V)



Trouble Shooting

1. Check the Battery connector state.

If not ,Check the Battery Connector Defective or Cold solder.

2. Check the voltage.C0391(5.0V)

If not ,Check the T0391 Defective or Cold solder


10. Charger Dead Repair chart 10. Charger Dead Repair chart

1. Check the Ear-Mic phone connection

If not ,Check the J0881 Defective or Cold solder.

2. Check the L0881/R0882/C1101



11. FM Receiver Dead Repair chart 11. FM Receiver Dead Repair chart

Trouble Shooting

Deberg Code

Code Test Infomation

1 Auto test

2 Project version

3 audio Test

4 speaker Test

5 Vibrator Test

6 keypad Test

7 Backlight Test

8 Lcd Test

9 Flash light Test

10 SD test

11 camera Test

12 headset Test

13 Fm Radio Test

14 BT Test

Factory ModeTest : *#346#+call+back

Deberg CodeTest Mode

Code Test Information

*#8841#+call SW Version Check

*#06# IMEI Number

Phone Lock Default Number : 1122

Documents

Service Manual