LG GD510 User manual

Service Manual Model : GD510
Internal Use Only
Service Manual
GD510
Date: October, 2009 / Issue 1.0

- 3 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
Table Of Contents
1. INTRODUCTION...............................................5
1.1 Purpose......................................................................5
1.2 Regulatory Information.................................................5
1.3. ABBREVIATION ...........................................................7
2. PERFORMANCE............................................... 9
2.1 H/W Feature................................................................9
2.2 Technical specification ...............................................10
3. Technical brief .............................................17
3.1 GD510 Functional Block diagram ...............................17
3.2 Baseband Processor (BBP) Introduction ......................18
3.3 Power management IC...............................................27
3.4. Power ON/OFF .........................................................31
3.5 SIM & uSD interface ..................................................32
3.6 Memory ....................................................................34
3.7 LCD Display ..............................................................35
3.8 Keypad Switching & Scanning ....................................36
3.9 Keypad back-light illumination....................................37
3.10 LCD back-light illumination ......................................38
3.11 JTAG & ETM interface connector ..............................39
3.12 Audio......................................................................40
3.13 Charging circuit.......................................................41
3.14 FM radio & BLUETOOTH...........................................42
3.15 u-USB Multi Media Interface connector.....................44
3.16 General Description .................................................46
3.17 Receiver part...........................................................47
3.18.Transmitter part.......................................................48
3.19 RF synthesizer.........................................................49
3.20 DCXO .....................................................................49
3.21 Front End Module control.........................................50
3.22 Power Amplifier Module...........................................51
3.2. PAM Schematic........................................................52
4. PCB layout picture ....................................... 53
5. Trouble shooting .......................................... 55
5.1 Trouble shooting test setup ........................................55
5.2 Power on Trouble.......................................................56
5.3 Charging trouble........................................................59
5.4 LCD display trouble ...................................................61
5.5 Camera Trouble.........................................................63
5.6 Receiver & Speaker trouble........................................65
5.7 Microphone trouble ...................................................68
5.8 Vibrator trouble..........................................................70
5.9 Keypad back light trouble...........................................72
5.10 SIM & uSD trouble...................................................74
5.11 Touch trouble ..........................................................77
5.12 Trouble shooting of Receiver part..............................78
5.13 Trouble shooting of Transmitter part ..........................84
6. DOWNLOAD & S/W UPGRADE....................... 93
7. BLOCK DIAGRAM........................................103
8. CIRCUIT DIAGRAM...................................... 105
9. BGA Pin Map .............................................. 113
10. PCB LAYOUT .............................................117
11. RF Calibration .......................................... 123
11.1 Test Equipment Setup ............................................123
11.2 Calibration Step.....................................................123
12. Stand-alone Test......................................128
12.1 Test Program Setting ...........................................1288
12.2 Tx Test..................................................................131
12.3 Rx Test..................................................................132
13. EXPLODED VIEW & REPLACEMENT
PART LIST ................................................133
13.1 EXPLODED VIEW ...................................................133
13.2 Replacement Parts ................................................135
13.3 Accessory .............................................................153

- 4 -
LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
GD510 Operational Description Revision A
LG Electronics 2/112 LGE Property
REVISED HISTORY
Editor Date Issue Contents of Changes S/W Version
A
* 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.
zThis manual provides the information necessary to install, program, operate and
maintain the GD510.

- 5 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. INTRODUCTION
GD510 Operational Description Revision A
LG Electronics 7/112 LGE Property
I. Introduction
1.1. Purpose
This manual provides the information necessary to repair, calibration, description and
download the features of the GD510.
1.2. Regulatory Information
1.2.1. 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.
1.2.2. 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.
1.2.3. 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 GD510 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.
1.2.4. Maintenance Limitations
Maintenance limitations on the GD510 must be performed only at the LGE or its authorized
agents. 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.
1.2.5. Notice of Radiated Emissions
The GD510 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.

- 6 -
LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1. INTRODUCTION
GD510 Operational Description Revision A
LG Electronics 8/112 LGE Property
1.2.6. Pictures
The pictures in this manual are for illustrative purposes only; your actual hardware may look
slightly different.
1.2.7. Interference and Attenuation
AGD510 may interfere with sensitive laboratory equipment, medical equipment, etc.
Interference from unsuppressed engines or electric motors may cause problems.
1.2.8. Electrostatic Sensitive Devices
ATTENTION
A board, which contains 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 such as
EEPROM to the factory, use the protective package as described.

- 7 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
1. INTRODUCTION
1. INTRODUCTION
GD510 Operational Description Revision A
LG Electronics 5/112 LGE Property
ABBREVIATION
For the purposes of this manual, following abbreviations apply:
୛APC Automatic Power Control
୛BB Baseband
୛BER Bit Error Ratio
୛CC-CV Constant Current – Constant Voltage
୛CLA Cigar Lighter Adapter
୛DAC Digital to Analog Converter
୛DCS Digital Communication System
୛dBm dB relative to 1 milli-watt
୛DSP Digital Signal Processing
୛EEPROM Electrical Erasable Programmable Read-Only Memory
୛GEGPRS Enhanced General Packet Radio ServiceG
୛EL ElectroluminescenceG
୛ESD Electrostatic Discharge
୛FPCB Flexible Printed Circuit Board
୛GMSK Gaussian Minimum Shift Keying
୛GPIB General Purpose Interface Bus
୛GPRS General Packet Radio Service
୛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
୛LGE LG Electronics
୛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
୛SAW Surface Acoustic Wave
୛SIM Subscriber Identity Module
୛SLR Sending Loudness Rating
1.3 Abbreviation

- 8 -
LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
1. INTRODUCTION
GD510 Operational Description Revision A
LG Electronics 6/112 LGE Property
୛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
୛DCXO Digitally Controlled Crystal Oscillator
୛WAP Wireless Application Protocol
ଝ8PSK 8 Phase Shift Keying

- 9 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. PERFORMANCE
2. PERFORMANCE
GD510 Operational Description Revision A
LG Electronics 9/112 LGE Property
II. General Performance
2.1 H/W Feature
Item Feature Comment
Standard Battery Li-ion, 900mAh
AVG TCVR Current 270mA typ @PL5
Standby Current 2.3 mA typ @PP9
Talk time 3 hours (GSM TX Level 7)
Standby time Over 250 hours (Paging Period:9, RSSI: -85dBm)
Charging time Under 3 hours
RX Sensitivity EGSM/GSM850:-105dBm˨,DCS/PCS:-105dBm˨
TX output power EGSM/GSM850 : 33dBm (@PL 5)
DCS/PCS: 30dBm (@PL 0)
GPRS compatibility Class 10
SIM card type 3V Small
Display Main 240 u400 pixels, 3” WQVGA, 262K color
Status Indicator Send Key, Shortcut Key, Volume Up/Down Key, PWR
Key, Camera Key, Lock Key
ANT Built in antenna
EAR Phone Jack u USB multi port Headset jack
PC Synchronization Yes
Speech coding HR/EFR/FR/AMR
Data and Fax Yes
Vibrator Yes
Buzzer No
Voice Recoding Yes
C-Mic Yes
Receiver Yes
Travel Adapter Yes
Options Bluetooth hands-free kit, Data Kit

- 10 -
LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
2. PERFORMANCE
GD510 Operational Description Revision A
LG Electronics 10/112 LGE Property
2.2 Technical specification
Item Description Specification
1Frequency Band
GSM900
TX: 890 + 0.2 x n MHz
RX: 935 + 0.2 x n MHz ( n = 1 ~ 124 )
EGSM
TX: 890 + 0.2 x (n-1024) MHz
RX: 935 + 0.2 x (n-1024) MHz ( n = 975 ~ 1023 )
DCS1800
TX: 1710 + ( n-511 ) u0.2 MHz (n = 512 a885)
RX: TX + 95 MHz
PCS1900
TX: 1850.2 + ( n-512 ) u0.2 MHz (n = 512 a810)
RX: TX + 80MHz
2Phase Error RMS < 5 degrees
Peak < 20 degrees
3Frequency Error < 0.1ppm
GSM900/EGSM
Level Power Toler. Level Power Toler.
5 33 dBm ±2dB 13 17 dBm ±3dB
6 31 dBm ±3dB 14 15 dBm ±3dB
7 29 dBm ±3dB 15 13 dBm ±3dB
8 27 dBm ±3dB 16 11 dBm ±5dB
9 25 dBm ±3dB 17 9 dBm ±5dB
10 23 dBm ±3dB 18 7 dBm ±5dB
11 21 dBm ±3dB 19 5 dBm ±5dB
12 19 dBm ±3dB
DCS1800/PCS1900
Level Power Toler. Level Power Toler.
0 30 dBm ±2dB 8 14 dBm ±3dB
1 28 dBm ±3dB 9 12 dBm ±4dB
2 26 dBm ±3dB 10 10 dBm ±4dB
3 24 dBm ±3dB 11 8 dBm ±4dB
4 22 dBm ±3dB 12 6 dBm ±4dB
5 20 dBm ±3dB 13 4 dBm ±4dB
6 18 dBm ±3dB 14 2 dBm ±5dB
4Power Level
7 16 dBm ±3dB 15 0 dBm ±5dB

- 11 -
Copyright © 2009 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LGE Internal Use Only
2. PERFORMANCE
GD510 Operational Description Revision A
LG Electronics 11/112 LGE Property
GSM900/EGSM
Offset from Carrier (kHz). Max. dBc
100 +0.5
200 -30
250 -33
400 -60
600 ~ 1,200 -60
1,200 ~ 1,800 -60
1,800 ~ 3,000 -63
3,000 ~ 6,000 -65
6,000 -71
DCS1800/PCS1900
Offset from Carrier (kHz). Max. dBc
100 +0.5
200 -30
250 -33
400 -60
600 ~ 1,200 -60
1,200 ~ 1,800 -60
1,800 ~ 3,000 -65
3,000 ~ 6,000 -65
5Output RF Spectrum
(due to modulation)
6,000 -73
GSM900/EGSM
Offset from Carrier (kHz) Max. (dBm)
400 -19
600 -21
1,200 -21
1,800 -24
DCS1800/PCS1900
Offset from Carrier (kHz) Max. (dBm)
400 -22
600 -24
1,200 -24
6Output RF Spectrum
(due to switching transient)
1,800 -27