LG KF310 Manuale utente
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1. INTRODUCTION .............................. 5
1.1 Purpose................................................... 5
1.2 Regulatory Information............................ 5
2. PERFORMANCE...............................7
2.1 Supporting Standard................................7
2.2 Main Parts : Solution................................7
2.3 HW Features............................................8
2.4 HW Spec. ..............................................10
3. TECHNICAL BRIEF ........................13
3.1 General Description ...............................13
3.2 GSM Mode.............................................15
3.3 UMTS Mode...........................................18
3.4 LO generation and distribution circuits...20
3.5 Off-chip RF Components .......................20
3.6 Digital Baseband (DBB/MSM6245)........29
3.7 Subsystem(MSM6245) ..........................31
3.8 Power Block...........................................39
3.9 External memory interface.....................44
3.10 H/W Sub System..................................46
4. TROUBLE SHOOTING ...................61
4.1 Power on trouble....................................61
4.2 USB trouble............................................64
4.3 SIM detect trouble..................................65
4.4 Key sense trouble ( KEYPAD ) ..............67
4.5 Keypad backlight trouble........................70
4.6 Micro SD trouble ....................................71
4.7 Audio trouble..........................................72
4.8 Camera trouble ......................................80
4.9 Main LCD trouble...................................83
4.10 Bluetooth trouble..................................86
4.11 RF Component.....................................88
4.12 SIGNAL PATH .....................................89
4.13 Checking VCTCXO Block ....................91
4.14 Checking Front-End Module Block ......93
4.15 Checking UMTS Block.........................95
4.16 Checking GSM Block...........................99
5. DOWNLOAD .................................105
5.1 Introduction ..........................................105
5.2 Downloading Procedure.......................105
5.3 Troubleshooting Download Errors .......120
5.4 Caution.................................................125
6. BLOCK DIAGRAM ........................126
6.1 GSM & UMTS RF Block.......................126
6.2 Interface Diagram ................................128
7. Circuit Diagram ............................131
8. BGM Pin Map................................139
9. PCB LAYOUT................................143
10. Calibration & RF Auto Test
(HOT KIMCHI) .............................149
10.1 Usage of Hot-Kimchi..........................149
11. EXPLODED VIEW &
REPLACEMENT PART LIST ......153
11.1 EXPLODED VIEW .............................153
11.2 Replacement Parts
<Mechanic component>.....................155
<Main component> ............................158
Table Of Contents
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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1.1 Purpose
This manual provides the information necessary to repair, calibration, description and download the
features of this model.
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 for 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.
The manufacturer 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. The manufacturer 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 phones or compatibility with the net
work, 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 phones must be performed only by the manufacturer 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.
1. INTRODUCTION
1. INTRODUCTION
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E. Notice of Radiated Emissions
This model 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
A phone 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 sign.
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.
1. INTRODUCTION
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2. PERFORMANCE
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2.1 Supporting Standard
2.2 Main Parts : Solution
2. PERFORMANCE
Item Feature Comment
Supporting Standard WCDMA
EGSM900/DCS1800/PCS1900 with
seamless handover
Phase 2+(include AMR)
SIM Toolkit : Class 1, 2, 3, A-E
Frequency Range EGSM900 TX : 880 - 915 MHz
EGSM900 RX : 925 - 960 MHz
DCS1800 TX : 1710 - 1785 MHz
DCS1800 RX : 1805 - 1880 MHz
PCS1900 TX : 1850 - 1910 MHz
PCS1900 RX : 1930 - 1990 MHz
WCDMA2100 TX : 1920 - 1980 MHz
WCDMA2100 RX : 2110 - 2170 MHz
Application Standard WAP 2.0, JAVA 2.0
Item Part Name Comment
Digital Baseband MSM6245 (Qualcomm)
Analog Baseband MSM6245(Qualcomm)
RF Chip RTR6280(Qualcomm)
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2.3 HW Features
2. PERFORMANCE
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Item Feature Comment
Form Factor Slide type
Battery 1) Capacity
Standard : Li-Ion, 900mAh
2) Packaging Type : Soft Pack
Size 97 x 48 x 16.7 mm
Weight 95 g With Battery
Stand by GSM 230 hours @paging period 5
time WCDMA 230 hours @DRX=1.28
Talk time GSM 200min @ Power Level 7
WCDMA 200min @Tx=12dBm
Charging time 3 hours @power OFF/900mAh
Rx sensitivity EGSM900 : -105 dBm
DCS1800 : -105 dBm
PCS1900 : -105 dBm
WCDMA2100 : -106.7 dBm
EGSM900 : 33 dBm Class4 (EGSM900)
DCS1800 : 30 dBm Class1(DCS)
PCS1900 : 30 dBm Class1(PCS)
EGSM900 : 27 dBm E2 (EGSM900)
DCS1800 : 26 dBm E2 (DCS)
PCS1900 : 26 dBm E2 (PCS)
GPRS compatibility GPRS Class 12
EDGE compatibility EDGE Class 12
Display QCIF Main LCD(2”, 176 x 220)
Built-in Camera 2.0 Mega pixel + VGA Video Call Camera
ANT Main : Internal Fixed Type
System connector 18 Pin
Ear Phone Jack 18pin, 4 Pole, Stereo
TX output
power
GSM/
GPRS
EDGE
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2. PERFORMANCE
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Item Feature Comment
PC synchronization Yes
Speech coding FR, EFR, HR, AMR
Vibrator Built in Vibrator
Blue Tooth V1.2
Voice Recording Yes
Speaker Phone mode Yes
Support
Travel Adapter Yes
CDROM No
Stereo Headset Yes
Data Cable No
T-Flash Yes Not Equipped
(External Memory)
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2. PERFORMANCE
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2.4 HW Spec.
2.4.1. GSM Transmitter/Receiver spec.
Item Specification
Frequency EGSM900 TX : 880 - 915 MHz RX : 925 - 960 MHz
DCS1800 TX : 1710 - 1785 MHz RX : 1805 - 1880 MHz
PCS1900 TX : 1850 - 1910 MHz RX : 1930 - 1990 MHz
Phase Error Rms : 5°
Peak : 20°
Frequency Error GSM : 0.1 ppm
DCS/PCS : 0.1 ppm
EMC(Radiated Spurious GSM/DCS : < -28dBm
Emission Disturbance)
Transmitter Output power GSM : 5dBm - 33dBm 3dB
and Burst Timing DCS/PCS : 0dBm - 30dBm 3dB
Burst Timing <3.69us
Spectrum due to modulation 200kHz : -36dBm
out to less than 1800kHz offset 600kHz : -51dBm/-56dBm
Spectrum due to modulation GSM : 1800-3000kHz :< -63dBc(-46dBm)
out to larger than 3000kHz-6000kHz : <-65dBc(-46dBm)
1800kHz offset to the edge 6000kHz < : < -71dBc(-46dBm)
of the transmit band DCS : 1800-3000kHz :< -65dBc(-51dBm)
6000kHz < : < -73dBc(-51dBm)
Spectrum due to switching transient 400kHz : -19dBm/-22dBm(5/0), -23dBm
600kHz : -21dBm/-24dBm(5/0), -26dBm
Reference Sensitivity - TCH/FS Class II(RBER) : -105dBm(2.439%)
Usable receiver input level range 0.012(-15 - -40dBm)
Intermodulation rejection - 800kHz, 1600kHz : -98dBm/-96dBm (2.439%)
Speech channels
AM Suppression -98dBm/-96dBm (2.439%)
- GSM : -31dBm - DCS : -29dBm
Timing Advance 0.5T
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2.4.2. WCDMA Transmitter spec.
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2. PERFORMANCE
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Item Specification
Transmit Frequency 1920 MHz ~ 1980 MHz
Maximum Output Power +24 dBm / 3.84 MHz, +1 / -3 dB
Frequency Error within 0.1 PPM
Open Loop Power Control Normal Conditions : within 9 dB,
Extreme Conditions : within 12 dB
Minimum Transmit Power < -50 dBm /3.84 MHz
Occupied Bandwidth < 5 MHz at 3.84 Mcps (99% of power)
Adjacent Channel Leakage > 33 dB @ 5 MHz,
Power Ratio (ACLR) > 43 dB @ 10 MHz
Spurious Emissions < -36 dBm / 1 kHz RW @ 9 kHz ≤ f < 150 kHz
|f-fc| > 12.5 MHz < -36 dBm / 10 kHz RW @ 150 KHz ≤ f < 30 MHz
< -36 dBm / 100 kHz RW @ 30 MHz ≤ f < 1 GHz
< -30 dBm / 1 MHz RW @ 1 GHz ≤ f < 12.75 GHz
< -41 dBm / 300 kHz RW @ 1893.5 MHz < f < 1919.6 MHz
< -67 dBm / 100 kHz RW @ 925 MHz ≤ f ≤ 935 MHz
< -79 dBm / 100 kHz RW @ 935 MHz < f ≤ 960 GHz
< -71 dBm / 100 kHz RW @ 1805 MHz ≤ f ≤ 1880 MHz
Transmit Intermodulation < -31 dBc @ 5 MHz & < -41 dBc @ 10 MHz
when Interference CW Signal Level = -40 dBc
Error Vector Magnitude < 17.5 %, when Pout ≥ -20 dBm
Peak Code Domain Error < -15 dB at Pout ≥ -20 dBm
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