LG HB620 Manuale utente
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1. INTRODUCTION .............................. 5
1.1 Purpose................................................... 5
1.2 Regulatory Information............................ 5
2. PERFORMANCE...............................7
2.1 System Overview .....................................7
2.2 Usable environment .................................8
2.3 Radio Performance ..................................9
2.4 Current Consumption.............................16
2.5 RSSI BAR ..............................................16
2.6 Battery BAR ...........................................16
2.7 Sound Pressure Level............................17
2.8 Charging ................................................18
3. TECHNICAL BRIEF ........................19
3.1 General Description ...............................19
3.2 GSM Mode.............................................21
3.3 UMTS Mode...........................................24
3.4 LO generation and distribution circuits...26
3.5 Off-chip RF Components .......................27
3.6 Digital Baseband (DBB/MSM6280)........43
3.7 Subsystem(MSM6280) ..........................45
3.8 Power Block ...........................................54
3.9 External memory interface .....................59
3.10 H/W Sub System..................................61
3.11 Feature List ..........................................72
4. TROUBLE SHOOTING ...................75
4.1 Power on trouble....................................75
4.2 USB trouble............................................77
4.3 SIM detect trouble..................................78
4.4 Key sense trouble (KEYPAD) ................79
4.5 Keypad backlight trouble........................81
4.6 Micro SD trouble ....................................83
4.7 Audio trouble..........................................84
4.8 Camera trouble ......................................95
4.9 Main LCD trouble ...................................99
4.10 Bluetooth trouble................................102
4.11 RF Component...................................104
4.12 SIGNAL PATH ...................................105
4.13 Checking VCTCXO Block ..................107
4.14 Checking Front-End Module Block ....109
4.15 Checking UMTS Block .......................112
4.16 Checking GSM Block .........................119
4.17 DVB-H/T trouble.................................126
5. DOWNLOAD .................................129
5.1 Introduction ..........................................129
5.2 Downloading Procedure.......................129
5.3 Troubleshooting Download Errors .......142
5.4 Caution.................................................147
6. BLOCK DIAGRAM ........................148
6.1 GSM & UMTS RF Block.......................148
6.2 Interface Diagram ................................150
7. Circuit Diagram ............................153
8. BGM Pin Map................................163
9. PCB LAYOUT................................167
10. CALIBRATION & RF AUTO TEST
(HOT KIMCHI) .............................175
10.1 Usage of Hot-Kimchi ..........................175
11. EXPLODED VIEW &
REPLACEMENT PART LIST ......179
11.1 EXPLODED VIEW .............................179
11.2 Replacement Parts
<Mechanic component>.....................181
<Main component> ............................184
11.3 Accessory ..........................................202
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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Copyright © 2008 LG Electronics. Inc. All right reserved.
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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 System Overview
2. PERFORMANCE
Item Specification
Shape GSM900/1800/1900 and WCDMA Folder Handset
Size 88.5 x 54.9 x17.9 mm
Weight 110 g (with 1000mAh Battery)
Power 4.0V normal, 1000 mAh(Li-ion) inner-pack
Talk Time Over 180 min (WCDMA, Tx=12 dBm, Voice)
(with 1000mAh) Over 180 min (GSM, Tx=Max, Voice)
Standby Time Over 250 Hrs (WCDMA, DRX=1.28)
(with 1000mAh) Over 320 Hrs (GSM, Paging period=5)
Antenna Internal type
LCD Main 320 x 240 pixel (TFT) / sub 34 x 96 pixel (TFT)
LCD Backlight White LED Back Light (2way ; main/sub common)
Camera 2.0 Mega (CMOS) / VGA (CMOS).
Vibrator Yes
LED Indicator No
MIC Yes
Receiver Yes
Earphone Jack Yes (18 pin)
Connectivity Bluetooth, USB
Volume Key Push Type (+, -)
External Memory Trans-Flash
I/O Connect 18 Pin
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2.2 Usable environment
2.2.1 Environment
2.2.2 Environment (Accessory)
* CLA : 12~24V(DC).
2. PERFORMANCE
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Item Specification
Voltage 4.0 V(Typ), 3.38 V(Min), [Shut Down : 3.28 V]
Operation Temp -20 ~ +60°C
Storage Temp -20 ~ +70°C
Humidity 85% (Max)
Reference Spec. Min Typ. Max Unit
TA Power Available power 100 220 240 Vac
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2. PERFORMANCE
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2.3 Radio Performance
2.3.1 Transmitter - GSM Mode
* In case of DCS : [A] -> 1710, [B] -> 1785* In case of PCS : [A] -> 1850, [B] -> 1910
No Item GSM850/900 DCS & PCS
1Conducted MS allocated 100k~1GHz -39dBm 9k ~ 1GHz -39dBm
Spurious Channel 1G~[A]MHz -33dBm
Emission 1G~12.75GHz -33dBm [A]M~[B]MHz -39dBm
[B]M~12.75GHz -33dBm
Idle Mode 100k~880MHz -60dBm 100k~880MHz -60dBm
880M~915MHz -62dBm 880M~915MHz -62dBm
915M~1GHz -60dBm 915M~1GHz -60dBm
1G~[A]MHz -50dBm 1G~[A]MHz -50dBm
[A]M~[B]MHz -56dBm [A]M~[B]MHz -56dBm
[B]M~12.5GHz -50dBm [B]M~12.5GHz -50dBm
2Radiated MS allocated 30M ~ 1GHz -36dBm 30M~1GHz 36dBm
Spurious Channel 1G~[A]MHz -30dBm
Emission 1G ~ 4GHz -30dBm [A]M~[B]MHz -36dBm
[B]M~4GHz -30dBm
Idle Mode 30M ~ 880MHz -57dBm 30M~880MHz -57dBm
880M ~ 915MHz -59dBm 880M~915MHz -59dBm
915M~1GHz -57dBm 915M~1GHz -57dBm
1G~[A]MHz -47dBm 1G~[A]MHz -47dBm
[A]M~[B]MHz -53dBm [A]M~[B]MHz -53dBm
[B]M~4GHz -47dBm [B]M~4GHz -47dBm
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* In case of DCS : [A] -> 1710, [B] -> 1785* In case of PCS : [A] -> 1850, [B] -> 1910
LGE Internal Use Only
Copyright © 2008 LG Electronics. Inc. All right reserved.
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2. PERFORMANCE
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No Item GSM850/900 DCS & PCS
3Frequency Error ± 0.1ppm ± 0.1ppm
4Phase Error ± 5(RMS) ± 5(RMS)
±20(PEAK) ± 20(PEAK)
5Frequency Error 3dB below reference sensitivity 3dB below reference sensitivity
Under Multipath and RA250 : ± 200Hz RA250: ± 250Hz
Interference Condition HT100 : ± 100Hz HT100: ± 250Hz
TU50 : ± 100Hz TU50: ± 150Hz
TU3 : ± 150Hz TU1.5: ± 200Hz
6Output RF Due to 0 ~ 100kHz +0.5dB 0 ~ 100kHz +0.5dB
Spectrum modulation 200kHz -30dB 200kHz -30dB
250kHz -33dB 250kHz -33dB
400kHz -60dB 400kHz -60dB
600 ~ 1800kHz -66dB 600 ~ 1800kHz -60dB
1800 ~ 3000kHz -69dB 1800 ~ 6000kHz -65dB
3000 ~ 6000kHz -71dB ≥6000kHz -73dB
≥6000kHz -77dB
Due to 400kHz -19dB 400kHz -22dB
Switching 600kHz -21dB 600kHz -24dB
transient 1200kHz -21dB 1200kHz -24dB
1800kHz -24dB 1800kHz -27dB
7Intermodulation attenuation - Frequency offset 800kHz
Intermodulation product should
be Less than 55dB below the
level of Wanted signal
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2. PERFORMANCE
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No Item GSM850/900 DCS & PCS
8Transmitter Output Power Level Power Toler. Level Power Toler.
533 ±3030 ±3
631 ±3128 ±3
729 ±3226 ±3
827 ±3324 ±3
925 ±3422 ±3
10 23 ±3 5 20 ±3
11 21 ±3 6 18 ±3
12 19 ±3 7 16 ±3
13 17 ±3 8 14 ±3
14 15 ±3 9 12 ±4
15 13 ±3 10 10 ±4
16 11 ±5 11 8 ±4
17 9 ±5 12 6 ±4
18 7 ±5 13 4 ±4
19 5 ±5 14 2 ±5
15 0 ±5
9Burst timing Mask IN Mask IN
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