Transcript Trouble Shooting

Service Manual
Model : KKT9+
Content
Specification
* Phone layout
* Icons Status of LCD
* H/W Features
* S/W Features
Method of SW Download
* Baseband Section
* RF Section
* Main Board
* Trouble Shooting
Circuit Description
Trouble Shooting
TEST Mode
Specification
* LCD Screen Display : Main : QQVGA 1.8" TFT
* Sub LCD Screen Display : N/A
* Antenna : internal (900/1800)
* Camera: Camera 0.08M
Specification
Phone layout -1
Specification
Phone layout -2
Specification
H/W Features
Description
Feature
Dimension
Main LCD
1.8” LCD
Sub LCD
N/A
Camera
0.08M
Flash Light
No
Speaker
Stereo (Single Speaker)
Vibrator
Built – in vibrator
Antenna
Internal
Phone Memory
Internal : 32 MB
SIM
2.8V
BlueTooth
Yes (hands free (HSP,HFP)) Stereo (GAVDA,A2DP,AVRCP)
Data Transfer (FTP, OPP)
FM Radio
Recode Format : WAR,AMR
Data
USB Connection
microSD
(T-Flash Card)
%Use only genuine microSD(T-Flash) cards approved & specified by the SD card
Association and SanDisk
Specification
S/W Features
Description
Feature
RF
GSM900 ,DCS1800
GSM/GPRS
GSM Phase 2
Message
SMS
WAP
NA
Camera
0.08m Camera
Video
Video Record & Play ( 3GP)
Wallpaper
Pictures and user definable JPG, BMP
Sound
64 Polyphonic True Sound MIDI, WAV, MP3
Games
Fun Game
Phonebook
1500 of Phonebook
Tools
Calendar, Alarm, Schedule Power On/Off, World Clock,
Calculator
Circuit Description (Baseband Section)
1.SC6531D(GSM/GPRS Base band Processor)
Circuit Description (Baseband Section)
SC6531
Circuit Description (Baseband Section)
Circuit Description (Baseband Section)
5. Audio FrontEnd
Audio Front-End Block Diagram
Circuit Description (Baseband Section)
6. Radio Interface Control
- Baseband Serial Interface
- Baseband Parallel Interface
- Automatic Power Control (APC)
Unit
- Automatic Frequenncy Control
(AFC) Unit
Block Diagram of APC unit
Block Diagram of the AFC Controller
Circuit Description (Baseband Section)
7. Baseband Front End
- Baseband Serial Ports
- Downlink Path (RX Path)
- Uplink Path (TX Path)
8. Timing Gemerator
9. Power, Clocks Reset
- Baseband to PMIC Serial Interface
- Clocks
- Reset Management
Circuit Description (RF Section)
1. RF7176D (RF PA)
Trouble Shooting
PCB LAYOUT (bot – Reference)
PCB LAYOUT (top – Reference)
Trouble Shooting
1. Power on Repair chart
1. Check VBAT(3.8V) .
2. Check Voltage out .
If not ,Check the J1001 Defective or Cold solder
VSIM 1.8V/3.0V – C312/C355
VCAMIO 2.8V – C809
VCAM-CORE 1.8V- C805/C806
VDDIO 2.8V- C317
VMEM 1.8 –C320
VDDSD 3V-C356
U201
3. Check the Output TCXO 26MHz
If not ,Check the X202 Defective or Cold solder
4. Re download
If not . Change CPU (U0100)
OCS100
U500
U100
Trouble Shooting
2. LCD Dead Repair chart (1)
1. Check the Connector LCD FPC,LCD
If not , Change the F-PCB,LCD
2. Check Voltage out . C705(2.8V)OR LCD 4PIN,5PIN,
CON10
U500
3. Check the DB0 ~ DB7 Defective or Cold solder
and CPU (U0100) Defective.
U100
Trouble Shooting
3. SIM Error Repair chart
1. After insert SIM ,Check the LCD Display.
2. Check the voltage out. CONN. 2, 6 PIN
(1.8V/3.0V)
If not ,Check the U0100 Defective or Cold
solder.
U300
Trouble Shooting
4. Melody Dead Repair chart
1. Check the speaker Spring state on Rear Cover
If not good, Change the Speaker
2. Check the U0100
CON130
Trouble Shooting
5. Audio Dead Repair chart - (1)
1. Check the MIC600
If not ,Check the MIC600 Defective or Cold solder.
2. Check the MICBIAS. R600(1.9~2.3V)
If not ,Check the U0100 Defective or Cold solder
3. Check the C601, C602 solder state.
Trouble Shooting
6. Vibrator Dead Repair chart
1. Check the Vibrator wire.
If not , Re-solder or Change
3. Check the U0100 Signal
If not , Change the CPU (U0100)
U300
Trouble Shooting
7. Camera Dead Repair chart
1. Check the connector state or camera module.
If not ,Change the camera module
2. Check the DATE. SR_D0-SR_D7
If not ,Change the U0100
3. Check the voltage. J718 3/10 PIN (2.8V),9PIN (1.8V)
If not ,Check the U0100 Defective or Cold solder
4. Change the CPU. U0100
U300
Trouble Shooting
8. 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. C356 (3V)
If not ,Check the U0100 Defective or Cold solder
3. Change the CPU. U0100
Trouble Shooting
9. Charger Dead Repair chart
1. Check the Battery connector state. J1001
If not ,Check the J1001Defective or Cold solder.
2. Check the voltage.C1102 (5.0V)
If not ,Check the Q201 Defective or Cold solder
3. Change the CPU. U0100
Debug Code
Factory ModeTest : *#7548*#
Code
Test Infomation
1
Full phone test
2
Item test
3
Bluetooth address
4
Adc calibrate info
Debug Code
Code
Test Information
*#7548135*#
Eng mode
*#18375#
Version info