U250/KU250
Table Of Contents
Page
Purpose
Regulatory Information
Electrostatic Sensitive Devices
Pictures
Interference and Attenuation
Specification
System Overview
Usable environment
Environment Accessory
Transmitter GSM Mode
Radio Performance
Case of DCS a 1710, B Case of PCS a 1850, B
Power Tolerance
Transmitter Wcdma Mode
3Receiver GSM Mode
Receiver Wcdma Mode
Stand by Voice Call
Current Consumption
U250/KU250 Current Consumption
Level Change
Battery BAR
Indication Standby
Charging
Test Item Specification
Sound Pressure Level
Block diagram of RF part
General Description
Technical Brief
GSM Receiver
GSM Mode
Antenna Switch Module Control logic
Technical Brief
RTR6275 RX feature
GSM Transmitter
GSM Transmitter matching
Transmitter
Umts Mode
Receiver
RTR6275 IC functional block diagram
Wcdma PAM U103 WS2512-TR1G
LO generation and distribution circuits
Off-chip RF Components
Front End Module control logic
Vctcxo X100 DSA321SCE-19.2M
Front-End Module U500 D5011
Pmic Functional Block Diagram U300 PM6650-2M
Usbotg
MSM6245 Interface
PM6650 Block Diagram
GSM PAM Schematic
GSM PAM U101 SKY77318
Umts DuplexerFL104ACMD-7602
Wcdma Rx SAW Filter Specification
Umts Rx RF filter FL103 EFCH2140TDE1
Bluetooth M100 LBRQ-2B43A
MSM6245 Bluetooth Baseband
Digital BasebandDBB/MSM6245
General Description
PM6650
RTR6275
512Mbit 76inch
Block DiagramMSM6245
Nand Flash
ARM Microprocessor Subsystem
Wcdma R99 features
SubsystemMSM6245
Edge features
GSM features
Gprs features
MSM6245 microprocessor subsystem
MSM6245 device audio processing features
Supported interface features
QcameraTM
Supported multimedia features
Video telephony services QvideophoneTM
QtvTM
Summary of MSM6245 device features
Description of RF configurations
Vocoder Subsystem
Mode Select and Jtag Interfaces
Stereo Wideband Codec
USB
General-Purpose Input/Output Interface
Uart
2. PM6650
Power Block
General
12 PM6650 Functional Block Diagram
13 U250/KU250 Battery Bar DisplayStand By Condition
Charging control
Trickle Charging
Parameter Min Typ Max Unit Trickle Current 100
Constant Current Charging
Constant Voltage Charging
External memory interface
Table#1. External memory interface
DATA310
512Mb
64MB
DQM30
RTR6275WCDMATx, GSMTx/Rx
11 H/W Sub System
RF Interface
Others
GPIOMap Name
MSM Sub System
Usim Interface
Table. Uart Interface
Table. USB Signal Interface
USB
HKADCHouse Keeping ADC
Table. Hkadc channel table
Key Pad
Table. Key Matrix Mapping Table
21 Camera Socket Type Connector
Camera Interface
CAMDATAOUT3
Dvdd
22 Schematic of KEY back light circuit KEY side
Keypad Light
LCD Module NM176CN1 Tovis
Display & LCD FPC Interface
Audio Signal Processing & Interface
24 Audio Interface Detailed DiagramMSM6245
MSM6245 Codec pins
25 Audio part schematics
MIC
Audio part schematics
Audio AMP
Audio Mode
Main Features
LG-U250/KU250 Main features
Logic Audio Bluetoot
SW100 U101 U500 FL101 U100 FL104 U103 X100
Logic / Audio
U301
S300
Trouble Shooting
RF Component
Umts
Signal Pathumts RF
Signal Pathgsm RF
Test Point of the VC-TCXO Block
Schematic of the VC-TCXO Block
Checking VC-TCXO Block
Check C312 of Pmic U300 Check R213 of MSM U201
Test Point of the Front-End Module Block
Schematic of the Front-End Module Block
Checking Front-End Module Block
Logic Table of the FEM
Checking Tx level
For testing, Max power of UMT 2100 is needed
Checking Umts Block
Trouble Shooting
Checking Umts PAM Control Block PAM control signal
Checking RF Rx Level
TP2 TP4
Trouble Shooting
Checking GSM Block
Schematic of RF Tx level
Checking RF Tx level
Trouble Shooting
Checking PAM Block
TP1 TP4 TP2TP3
Checking RF Rx Block
TP1. DCS RX Input
Trouble Shooting
Checking Bluetooth Block
Bluetooth
Start
Signals exits?
Change the M100 Signals exits?
Change the Main board
Power on Troubleshooting
Vregmsmc Vregmsme Vregmsmp
Charger Troubleshooting
Charger
Change TA Or USB Cable
Change the board Charger Troubleshooting Flow
Connection OK?
Charging part Main PCB Front
Q302
Q301
Cable is inserted? Insert cable
USB Troubleshooting
Go to power on trouble shooting
Q400 pin 4 is 5V? Check Q300 pin
Yes
SIM Detect Troubleshooting
Start Re-insert the SIM card
End
Usim
Yes Camera is OK?
Camera Troubleshooting
Start
Yes Check the Cammclk
Yes
Change the Main board 103
104
C350 C447 U501
U303C348 C349
Keypad Backlight Troubleshooting
Figure.Keypad backlight LED part 105
Main LCD Troubleshooting
106
Receiver Path
107
108
Headset path
109
110
Speaker phone path
111
112
Main microphone
113
114
Headset microphone
115
116
117
Vibrator
Work well? Yes End
118
Introduction
Downloading Procedure
U250/KU250 Download
Connecting to PC
120
121
Keep All Contents
EraseEFS
Choosing image files
122
123
124
Downloading
125
126
127
Tools
128
Troubleshooting Download Errors
129
130
NV Restore Error
131
132
Port number
133
U250/KU250 RF Functional Block Diagram 134
GSM & Umts RF Block
RF Block Component 135
RTR6275 & MSM6245 Interface Diagram 136
Interface Diagram
1 RTR6275 & MSM6245 Interface Diagram
Memory Interface Diagram 137
Memory Interface
3 USB,UART,SIM,JTAG Interface
USB, UART, SIM, Jtag Interface 138
Main RF signal Control signal
139
Placement Top Side
140
Bottom Side
141
142
Circuit Diagram
143
144
Nand & LCD
145
EBI2WEN Nandready Nandale Nandcle Resoutn EBI2OEN
LCD Connector
146
147
148
149
Configuration of HOT Kimchi
Configuration of directory
150
151
MSVCP60D.DLL MSVCRTD.DLL
152
How to use HOT Kimchi
Procedure
153
Test Program Setting
154
Wcdma Test Mode
155
GSM Test Mode
156
Exploded View & Replacement Part List
157
158
Replacement Parts Mechanic component
159
160
Replacement Parts Main component
161
162
163
164
165
166
167
DUPLEXER,IMT
168
169
170
171
RES,ARRAY,R
172
Vctcxo
173
Accessory
174