LG KM710 User manual
Date: May, 2008 / Issue 1.0
Service Manual Model : KM710c
Service Manual
KM710c
Internal Use Only
- 3 -
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
The information in this manual is subject to change without notice and should not be construed as a
commitment by LGE Inc. Furthermore, LGE Inc. reserves the right, without notice, to make changes to
equipment design as advances in engineering and manufacturing methods warrant. This manual
provides the information necessary to install, program, operate and maintain the KM710c.
REVISED HISTORY
Date Issue Contents of Changes S/W Version
2007. 12. 21 0.1
2008. 1. 31 0.2
2008. 4. 30 0.3
- 4 -
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 5 -
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1. Introduction ..................................... 7
1.1 Purpose................................................... 7
1.2. Regulatory Information........................... 7
1.3 Abbreviations .......................................... 9
2. General Performance.................... 10
2.1 Product Name ....................................... 10
2.2 Supporting Standard ............................. 10
2.3 Main Parts: GSM Solution..................... 10
2.4 HW Feature........................................... 11
2.5 S/W Features .........................................13
3. HW Circuit Description................. 16
3.1 General Description .............................. 16
3.2 RF Part.................................................. 16
3.3 Digital Baseband................................... 22
3.4 Multimedia IC ........................................ 29
3.5 Analog Baseband.................................. 32
3.6 Bluetooth Interface.................................38
4. Trouble Shooting .......................... 42
4.1 RF Part Technical Brief......................... 43
4.2 RF Part Trouble shooting...................... 46
4.3 Bluetooth Trouble Shooting .................. 53
4.4 Baseband Part Troubleshooting ........... 56
4.5 LCD Display Trouble shooting .............. 64
4.6 Camera Trouble Shooting..................... 69
4.7 Wheel Module Trouble Shooting........... 73
4.8 SIM Detect Trouble Shooting................ 76
4.9 Slide Up/Down Trouble Shooting.......... 79
4.10 Speaker/Receiver Trouble Shooting
(Common Path)................................... 81
4.11 Speaker/Receiver Trouble Shooting
(Acoustic Path).................................... 84
4.12 MIC Trouble Shooting ......................... 85
4.13 Ear-Mic Jack Detection
Trouble Shooting................................. 87
4.14 Ear-Mic Hook Detection
Trouble Shooting................................. 88
4.15 Ear-Mic Headset MIC
Trouble Shooting................................. 89
4.16 Ear-Mic Headset HSOR/HSOL
Trouble Shooting................................. 90
4.17 FM-Radio Trouble Shooting................ 91
4.18 Transflash Trouble Shooting............... 93
4.19 Main Key Backlight LED Trouble
Shooting.............................................. 95
4.20 Slide LCD Backlight LED
Trouble Shooting................................. 97
4.21 Vibrator Trouble Shooting ....................99
5. Download..................................... 100
5.1 Download Software............................. 100
5.2 The Environment of Downloading
Software.............................................. 100
5.3 Download Procedure ...........................102
6. Block Diagram............................. 109
7. CIRCUIT DIAGRAM...................... 111
8. BGA IC Pin Check ........................125
9. PCB LAYOUT............................... 131
10. Calibration ....................................... 141
10.1 What’s the Rx Calibration?.............. 141
10.2 What’s the Tx Calibration? .............. 141
10.3 Calibration program-HOT_KIMCHI ..142
11. Engineering Mode......................147
12. EXPLODED VIEW &
REPLACEMENT PART LIST ..... 151
12.1 EXPLODED VIEW ............................ 151
12.2 Replacement Parts
<Mechanic component>.................... 153
<Main component> ........................... 156
12.3 Accessory ......................................... 173
Table of Contents
- 6 -
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1.1 Purpose
This manual provides the information necessary to repair, calibration, description and download the features of the KM710c.
1.2 Regulatory Information
A. Security
Toll fraud, the unauthorized use of telecommunications system by an unauthorized part (for example, persons other than your
company’s employees, agents, subcontractors, or person working on your company’s behalf) can result in substantial additional
charges you’re your telecommunications services. System users are responsible for the security of own system. There are may
be risks of toll fraud associated with your telecommunications system. System users are responsible for programming and
configuring the equipment to prevent unauthorized use. LGE does not warrant that this product is immune from the above case
but will prevent unauthorized use of common-carrier telecommunication service of facilities accessed through or connected to it.
LGE will not be responsible for any charges that result from such unauthorized use.
B. Incidence of Harm
If a telephone company determines that the equipment provided to customer is faulty and possibly causing harm or interruption in
service to the telephone network, it should disconnect telephone service until repair can be done. A telephone company may
temporarily disconnect service as long as repair is not done.
C. Changes in Service
A local telephone company may make changes in its communications facilities or procedure. If these changes could reasonably
be expected to affect the use of the KM710c or compatibility with the network, the telephone company is required to give
advanced written notice to the user, allowing the user to take appropriate steps to maintain telephone service.
D. Maintenance Limitations
Maintenance limitations on the KM710c must be performed only by the LGE or its authorized agent.
The user may not make any changes and/or repairs expect as specifically noted in this manual.
Therefore, note that unauthorized alternations or repair may affect the regulatory status of the system and may void any remaining
warranty.
- 7 -
1. Introduction
1. Introduction
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 8 -
1. Introduction
E. Notice of Radiated Emissions
The KM710c complies with rules regarding radiation and radio frequency emission as defined by local regulatory agencies. In
accordance with these agencies, you may be required to provide information such as the following to the end user.
F. Pictures
The pictures in this manual are for illustrative purposes only; your actual hardware may look slightly different.
G. Interference and Attenuation
An KM710c may interfere with sensitive laboratory equipment, medical equipment, etc. Interference from unsuppressed engines
or electric motors may cause problems.
H. Electrostatic Sensitive Devices
ATTENTION
Boards, which contain Electrostatic Sensitive Device (ESD), are indicated by the Following information is ESD handling:
•
Service personnel should ground themselves by using a wrist strap when exchange system boards.
•
When repairs are made to a system board, they should spread the floor with anti-static mat which is also grounded.
•
Use a suitable, grounded soldering iron.
•
Keep sensitive parts in these protective packages until these are used.
•
When returning system boards or parts like EEPROM to the factory, use the protective package as described.
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
- 9 -
1. Introduction
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1.3 Abbreviations
For the purposes of this manual, following abbreviations apply:
APC Automatic Power Control
BB KM710c
BER Bit Error Ratio
CC-CV Constant Current - Constant Voltage
DAC Digital to Analog Converter
DCS Digital Communication System
dBm dB relative to 1 milliwatt
DSP Digital Signal Processing
EEPROM Electrical Erasable Programmable Read-Only Memory
EL Electroluminescence
ESD Electrostatic Discharge
FPCB Flexible Printed Circuit Board
GMSK Gaussian Minimum Shift Keying
GPIB General Purpose Interface Bus
GSM Global System for Mobile Communications
IPUI International Portable User Identity
IF Intermediate Frequency
LCD Liquid Crystal Display
LDO Low Drop Output
LED Light Emitting Diode
OPLL Offset Phase Locked Loop
PAM Power Amplifier Module
PCB Printed Circuit Board
PGA Programmable Gain Amplifier
PLL Phase Locked Loop
PSTN Public Switched Telephone Network
RF Radio Frequency
RLR Receiving Loudness Rating
RMS Root Mean Square
RTC Real Time Clock
FEM Front End Module
SIM Subscriber Identity Module
SLR Sending Loudness Rating
SRAM Static Random Access Memory
STMR Side Tone Masking Rating
TA Travel Adapter
TDD Time Division Duplex
TDMA Time Division Multiple Access
UART Universal Asynchronous Receiver/Transmitter
VCO Voltage Controlled Oscillator
VCTCXO Voltage Control Temperature Compensated Crystal Oscillator
WAP Wireless Application Protocol
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. General Performance
- 10 -
2. General Performance
2.1 Product Name
KM710c: GPRS Class 10 / EDGE Class 10
2.2 Supporting Standard
2.3 Main Parts: GSM Solution
Item Feature Comment
Supporting Standard KM710c : GSM900/DCS1800/PCS1900
KM710d : GSM850/DCS1800/PCS1900
with seamless handover
Phase 2+(include AMR)
SIM Toolkit: Class 1, 2, 3, A-E
Frequency Range GSM850 TX : 824 - 849 MHz
GSM850 RX : 869 - 894 MHz
GSM900 Tx : 880 - 195 MHz
GSM900 Rx : 925 - 960 MHz
DCS1800 TX : 1710 - 1785 MHz
DCS1800 RX : 1805 - 1880 MHz
PCS1900 TX : 1850 - 1910 MHz
PCS1900 RX : 1930 - 1990 MHz
Application Standard WAP 2.0, JAVA 2.0
Item Part Name Comment
Digital Baseband Neptune (D761811BZVL): TI
Analog Baseband Triton (TWL3029): TI
RF Chip B6PLD: RENESAS
- 11 -
2. General Performance
2.4 HW Feature
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
Item Feature Comment
Form Factor Slide
Battery 1) Capacity
Standard : Li-Polymer, 950mAh
2) Packing Type: Soft Pack
Size Standard:
103 X 48 X 14.9 mm
Weight 116g With Battery
Volume 68cc
PCB Staggered 10Layers , 0.8t
Stand by time 250 hrs @ Paging Period 5
Charging time 3 hrs @ Power Off / 950mAh
Talk time Min: 3.0 hrs @ Power Level 7 @ EGSM / 950mAh
RX sensitivity EGSM : -105 dBm
GSM : -105 dBm
DCS 1800 : -105 dBm
PCS 1900 : -105 dBm
TX output power GSM/ EGSM : 33 dBm Class4 (EGSM)
GPRS GSM : 33 dBm Class4 (GSM)
DCS 1800 : 30 dBm Class1 (PCS)
PCS 1900 : 30 dBm Class1 (DCS)
EDGE EGSM : 27 dBm E2 (EGSM)
GSM : 27 dBm E2 (GSM)
DCS 1800 : 26 dBm E2 (PCS)
PCS 1900 : 26 dBm E2 (DCS)
GPRS compatibility GPRS Class 10
EDGE compatibility EDGE Class 10
SIM card type Plug-In SIM 3V /1.8V
Display Main LCD
2 inch 262K Color TFT (240 x 320 pixel)
Backlight : White LED
Sub LCD
1.1 inch 262K color TFT (128 RGB x 160 dots)
Built-in Camera 3M QXGA CMOS Camera One button access
Other manuals for KM710
3
This manual suits for next models
1
Table of contents
Other LG Cell Phone manuals
Popular Cell Phone manuals by other brands
Blackbe;rry
Blackbe;rry Q10 user guide
Blackbe;rry
Blackbe;rry Bold 9900 user guide
Blackbe;rry
Blackbe;rry STORM 9500 - VERSION 5.0 user guide
ISAFE MOBILE
ISAFE MOBILE IS655.2 operating manual
Blackbe;rry
Blackbe;rry CURVE 8300 - SMARTPHONE Getting started guide
Blackbe;rry
Blackbe;rry 8707 - VERSION 4.1 user guide