Lg Gs290 User manual

Service Manual Model : GS290

Internal Use Only

Service Manual

GS290

Date: March, 2010 / Issue 1.0

- 3 -

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 Abbreviations................................................................................... 7

2. PERFORMANCE..................................................9

2.1 H/W Features.................................................................................... 9

2.2 Technical Speciﬁcation...............................................................11

3. TECHNICAL BRIEF............................................17

3.1 GS290 Functional Block diagram...........................................17

3.2 Baseband Processor (BBP) Introduction..............................18

3.3 Power management IC ..............................................................30

3.4. Power ON/OFF..............................................................................35

3.5. SIM & uSD interface....................................................................37

3.6. Memory...........................................................................................39

3.7. LCD Display....................................................................................40

3.8. Keypad Switching & Scanning...............................................41

3.9. Keypad back-light illumination .............................................42

3.10. LCD back-light illumination..................................................43

3.11. Audio..............................................................................................44

3.13. charging circuit..........................................................................46

3.14 FM radio & BLUETOOTH ..........................................................47

3.15. 5pin u-USB Interface connector..........................................51

3.16. General Description.................................................................54

3.17. Receiver part...............................................................................56

3.18. Transmitter part.........................................................................57

3.19. RF synthesizer.............................................................................58

3.20. Front End Module control .....................................................59

3.21. Power Ampliﬁer Module........................................................60

3.22. PAM Schematic ..........................................................................61

4. TROUBLE SHOOTING ......................................62

4.1 Trouble shooting test setup.....................................................62

4.2 Power on Trouble..........................................................................63

4.3 Charging trouble ..........................................................................66

4.4 LCD display trouble .....................................................................68

4.5 Camera Trouble.............................................................................70

4.6 Receiver & Speaker trouble ......................................................72

4.7 Microphone trouble....................................................................75

4.8 Vibrator trouble.............................................................................77

4.9 Keypad back light trouble.........................................................79

4.10 SIM & uSD trouble......................................................................81

4.11 Touch trouble...............................................................................85

4.12 Trouble shooting of Receiver part.......................................87

4.13 Trouble shooting of Transmitter part.................................93

5. DOWNLOAD & S/W UPGRADE......................101

6. BLOCK DIAGRAM...........................................112

7. CIRCUIT DIAGRAM ........................................113

8. BGA Pin Map..................................................121

9. PCB LAYOUT...................................................129

10.ENGINEERING MODE...................................135

10.1.Test Equipment Setup..........................................................135

10.2. Calibration Step...................................................................... 135

11. STAND ALONE TEST ....................................140

11.1 Test Program Setting ............................................................. 140

11.2 Tx Test........................................................................................... 143

11.4 Rx Test.......................................................................................... 145

12. EXPLODED VIEW & REPLACEMENT

PART LIST ....................................................147

12.1 EXPLODED VIEW...................................................................... 147

12.2 Replacement Parts.................................................................. 149

- 4 -

Only for training and service purposes

- 5 -

Only for training and service purposes

LGE Internal Use Only

1. INTRODUCTION

1.1. Purpose

This manual provides the information necessary to repair, calibration, description and download the features of

the GS290.

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 GS290 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 GS290 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.

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Only for training and service purposes

1. INTRODUCTION

1.2.5. Notice of Radiated Emissions

The GS290 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.

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

An GS290 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

Boards, 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 -

Only for training and service purposes

LGE Internal Use Only

1. INTRODUCTION

1.3. 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

୛EGPRS Enhanced General Packet Radio Service

୛EL Electroluminescence

୛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

୛

- 8 -

Only for training and service purposes

1. INTRODUCTION

୛

୛RLR Receiving Loudness Rating

୛RMS Root Mean Square

୛RTC Real Time Clock

୛SAW Surface Acoustic Wave

୛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

୛DCXO Digitally Controled Crystal Oscillator

୛WAP Wireless Application Protocol

ଝ8PSK 8 Phase Shift Keying

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Only for training and service purposes

LGE Internal Use Only

2. PERFORMANCE

2.1 H/W Feature

Item Feature Comment

Standard Battery Li-ion, 900mAh

AVG TCVR Current 250mA 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 3.5Pi 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

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Only for training and service purposes

2. PERFORMANCE

2.2 Technical specification

Item Description Specification

1 Frequency Band

GSM850

TX: 824 + 0.2 x n MHz

RX: 869 + 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

2 Phase Error RMS < 5 degrees

Peak < 20 degrees

3 Frequency Error < 0.1ppm

GSM850/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

4 Power Level

7 16 dBm ±3dB 15 0 dBm ±5dB

- 11 -

Only for training and service purposes

LGE Internal Use Only

2. PERFORMANCE

GSM850/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

5 Output RF Spectrum

(due to modulation)

6,000 -73

GSM850/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

Output RF Spectrum

(due to switching

transient)

1,800 -27

- 12 -

Only for training and service purposes

2. PERFORMANCE

7 Spurious Emissions

Conduction, Emission Status

8 Bit Error Ratio

GSM850 / EGSM

BER (Class II) < 2.439% @-102dBm

DCS1800/PCS1900

BER (Class II) < 2.439% @-100dBm

9 Rx Level Report

accuracy r3 dB

10 SLR 8 r3 dB

Frequency (Hz) Max.(dB) Min.(dB)

100 -12 /

200 0 /

300 0 -12

1,000 0 -6

2,000 4 -6

3,000 4 -6

3,400 4 -9

11 Sending Response

4,000 0 /

12 RLR 2 r3 dB

Frequency (Hz) Max.(dB) Min.(dB)

100 -12 /

200 0 /

300 2 -7

500 * -5

1,000 0 -5

3,000 2 -5

3,400 2 -10

4,000 2

13 Receiving Response

* Mean that Adopt a straight line in between 300 Hz and 1,000 Hz to be

Max. level in the range.

14 STMR 13 r5 dB

15 Stability Margin > 6 dB

- 13 -

Only for training and service purposes

LGE Internal Use Only

2. PERFORMANCE

dB to ARL (dB) Level Ratio (dB)

-35 17.5

-30 22.5

-20 30.7

-10 33.3

0 33.7

7 31.7

16 Distortion

10 25.5

17 Side tone Distortion Three stage distortion < 10%

<Change> System

frequency (26 MHz)

tolerance

d2.5 ppm

19 <Change>32.768KHz

tolerance d30ppm

20 Power consumption

Standby

- Normalஆd3 mA(@PP9)

21 Talk Time

EGSM/Lvl 7 (Battery Capacity 800mA):180 min

EGSM/Lvl12(Battery Capacity 800 mA):320min

22 Standby Time

Under conditions, at least 300 hours:

1. Brand new and full 900mAh battery

2. Full charge, no receive/send and keep GSM in idle mode.

3. Broadcast set off.

4. Signal strength display set at 3 level above.

5. Backlight of phone set off.

23 Ringer Volume

At least 65 dB under below conditions:

1. Ringer set as ringer.

2. Test distance set as 50 cm

24 Charge Current

Fast Charge : < 650 mA

Slow Charge: < 120 mA

- 14 -

Only for training and service purposes

2. PERFORMANCE

Antenna Bar Number Power

7 >-92 dBm a

5 -97dBm a–93dBm

4 -100dBm a

–98dBm

2 -103dBm a

–101dBm

1 -105dBm a

–104dBm

0 < –106 dBm

25 Antenna Display

Off No Service

Battery Bar Number Voltage (±0.05V)

3 3.72V~4.2V

2 3.65V~3.71V

1 3.59V~3.64V

26 Battery Indicator

0 3.35V~3.58V

3.59VĻ±0.05V (Call)

27 Low Voltage Warning

3.59VĻ±0.05V (Standby)

28 Forced shut down

Voltage 3.35 r0.05 V

29 Battery Type

Li-ion Battery

Standard Voltage = 3.7 V

Battery full charge voltage = 4.2 V

Capacity: 900mAh

30 Travel Charger

Switching-mode charger

Input: 150 a240 V, 50/60Hz

Out put: 5.1, 0.7A

- 15 -

Only for training and service purposes

LGE Internal Use Only

2. PERFORMANCE

* EDGE RF Specification (Option: is not serviced for ”EDGE mode”)

Item Description Specification

1 RMS EVM ≤9%

2 Peak EVM ≤30%

3 95th Percentile EVM ≤15%

4 Origin Offset Suppression ≥30dB

GSM900/EGSM

Level Power Toler. Level Power Toler.

5 27dBm ±3dB 13 17dBm ±3dB

6 27dBm ±3dB 14 15dBm ±3dB

7 27dBm ±3dB 15 13dBm ±3dB

8 27dBm ±3dB 16 11dBm ±5dB

9 25dBm ±3dB 17 9dBm ±5dB

10 23dBm ±3dB 18 7dBm ±5dB

11 21dBm ±3dB 19 5dBm ±5dB

12 19dBm ±3dB

DCS1800, PCS1900

Level Power Toler. Level Power Toler.

0 26/25dBm ±3dB 8 14dBm ±3dB

1 26/25dBm ±3dB 9 12dBm ±4dB

2 26/25dBm ±3dB 10 10dBm ±4dB

3 24dBm ±3dB 11 8dBm ±4dB

4 22dBm ±3dB 12 6dBm ±4dB

5 20dBm ±3dB 13 4dBm ±4dB

6 18dBm ±3dB 14 2dBm ±5dB

5 Power Level

7 16dBm ±3dB 15 0dBm ±5dB

GSM900/EGSM

Offset from carrier(kHz) Max. dBc

100 +0.5

200 -30

250 -33

400 -54

600~<1,200 -60

1,200~<1,800 -60

1,800~<3,000 -63

3,000~<6,000 -65

6 Output RF Spectrum

(due to modulation)

6,000 -71

- 16 -

Only for training and service purposes

2. PERFORMANCE

DCS1800, PCS1900

Offset from carrier(kHz) Max. dBc

100 +0.5

200 -30

250 -33

400 -54

600~<1,200 -60

1,200~<1,800 -60

1,800~<3,000 -63

3,000~<6,000 -65

6,000 -71

GSM900/EGSM

Offset from carrier(kHz) Max. dBm

400 -23

600 -26

1,200 -27

1,800 -30

DCS1800, PCS1900

Offset from carrier(kHz) Max. dBm

400 -23

600 -26

1,200 -27

7 Output RF Spectrum

(due to switching transient)

1,800 -30

- 17 -

Only for training and service purposes

LGE Internal Use Only

3. TECHNICAL BRIEF

3.1. GS290 Functional Block diagram.

The functional component arrangement is mentioned below diagram.

Figure 1 GS290 Functional block diagram

- 18 -

Only for training and service purposes

3. TECHNICAL BRIEF

3.2. Baseband Processor (BBP) Introduction

Figure 2-1 E-GPRS Solution

In combination with Infineon Technologies’ SMARTi familiy RF ICs and an S/M-Power battery and power

SMARTiPM

PMB 6272

(ED GE G SM/GPR S RF T ran sce ive r)

TEAKLi te®

GEA-1/2/3

SRA M

USB FS

OTG

DMA C

GPIO s

USIM

GPTU

RTC

Equali zer

Acc.

I²S / DAI

GSM

Timer

Keyp ad AFC

CAPCO M

IC U

SPCU

AUX

ADC

SRC

MEM

CTRL

SDIO IF

I²C

CGU

Display

Camera

IF FCDP

Multi medi a IC I F

ARM® 926 EJ-S

MOVE CoPro

Fast

IrDA

USIFs

Cryp to

box

TSMU

I²S

Sys

Timer

1 Wire

Eng in e

MMC IF

Channel

Deco der

BB Receiver

Modu lator

8 PSK/GMSK

JTAG

Cerb erusABW

S-GOLD3

PMB 8877

IR-Memory DAC

ADC

Audio F E DAC

DSP

Timer

DSP

ICU

DSP

ICU

ADC

I/Q

DA C

Ph/

Am p

PLL

AD C

3 WI R E

Control IF

GSM

Cipher Unit

3-w ire-bus

Analog

Audio In

Analog

Audio Out

SDs

SM-Power3

PMB 6821

USB

AUDIO

AMPL IF IER

BA C K L IGH T

I²C

DI GI TA L

CO N TR O L CH A R G ER

DI G. R ESET

& SLEEP

CO N TR O L

VRF sVAU D I Os

VMMCVUSB

VSIMVRT C

VVIBVAU X

VAF C

VIOVPLL

REF ER EN C E

FEM

DC X O

Core s upply (0.95 V,1.37V)

Analog Supply(2.5V)

VRTC, VPLL,IO Supply

1.8V,2 .5V

LD Os

FLA SH

LIG H T

SD R or D DR

SD-R A M

/ C-R A M

N OR / N AN D

FLA SH

1 32

465

7 98

* #0

SIM

MMC

Figure 2 Top level block diagram of the S-GOLD3TM (PMB8877)

- 19 -

Only for training and service purposes

LGE Internal Use Only

3. TECHNICAL BRIEF

3.2.1. General Description

S-GOLD3TM is a GSM/EDGE single chip mixed signal Baseband IC containing all analog and digital functionality

of a cellular radio. Additionally S-GOLD3TM Provides multimedia extensions such as camera, software MIDI, MP3

sound. It is designed as a single chip solution, integrating the digital and mixed signal portions of the base

band in 0.09um, 1.2V technology.

The chip will fully support the FR, EFR, HR and AMR-NB vocoding.

S-GOLD3TM support multi-slot operation modes HSCSD (up to class 10), GPRS for high speed data application

(up to class 12) and EGPRS (up to class 12) without additional external hardware.

3.2.2. Block Description

zProcessing core

ARM926EJ-S 32 bit processor core for controller functions. The ARM926EJ-S includes an MMU, and the Jazelle

Java extension for Java acceleration.

- TEAKLite DSP core

zARM-Memory

- 32k Byte Boot ROM on the AHB

- 96k Byte SRAM on the AHB, flexibly usable as program or data RAM

- 16k Byte Cache for Program (internal)

- 8k Byte tightly coupled memory for Program(internal)

- 8k Byte Cache for Data(internal)

- 8k Byte tightly coupled memory for Data(internal)

zDSP-Memory

- 104K x 16bit Program ROM

- 8k x 16bit Program RAM

- 60k x 16bit Data ROM

- 37k x 16bit Data RAM

- Incremental Redundancy(IR) Memory of 35904 words of 16bit

zShared Memory Block

1.5K x 32bit Shared RAM(dual ported) between controller system and TEAKLite.

zController Bus system

The processor cores and their peripherals are connected by powerful buses.

Multi-layer AHB for connecting the ARM and the other master capable building blocks with the internal and

external memories and with the peripheral buses.

- 20 -

Only for training and service purposes

3. TECHNICAL BRIEF

zClock system

The clock system allows widely independent selection of frequencies for the essential parts of the S-GOLD3.

Thus power consumption and performance can be optimized for each application.

zFunctional Hardware block

- CPU and DSP Timers

- MOVE coprocessor performing motion estimation for video encoding algorithms

(H.263, MPEG-4)

- Programmable PLL with additional phase shifters for system clock generation

- GSM Timer Module that off-loads the CPU from radio channel timing

- GMSK / 8-PSK Modulator according to GSM-standard 05.04 (5/2000)

- GMSK Modulator: gauss-filter with B*T=0.3

- EDGE Modulator: 8PSK-modulation with linearized GMSK-Pulse-Filter

- Hardware accelerators for equalizer and channel decoding.

- Incremental Redundancy memory for EDGE class 12 support

- A5/1, A5/2, A5/3 Cipher unit

- GEA1, GEA2, GEA3 Cipher Unit to support GPRS data transmission

- Advanced static and dynamic power management features including TDMA-Frame

synchronous low power mode and enhanced CPU modes(idle and sleep modes)

- Pulse Number Modulation output for Automatic Frequency Correction(AFC)

- Serial RF Control interface: support of direct conversion RF

- A Universal Serial Interface(USIF) enabling asynchronous (UART) of synchronous (SPI)

serial data transmission

- 3 USIF with autobaud detection, hardware flow control and integrated

- A dedicated Fas IfDA Controller supporting IrDA’s SIR,MIR and FIR standards

(up to 4Mbps)

- I2C-bus interface (e.g. connection to S/M power)

- A fast display interface supporting serial and parallel interconnection

- An ITU-R BT.656 compatible Camera interface.

- Programmable clock output for a camera

- An multimedia/Secure Digital Card Interface (MMCI/SD:SDIO capable)

- 21 -

Only for training and service purposes

LGE Internal Use Only

3. TECHNICAL BRIEF

3.2.3. External Devices connected to memory interface

Table 1. Memory interface

Device Name Maker Remark

FLASH K522H1HACB-B060 SAMSUNG Synchronous / A synchronous

DDR K522H1HACB-B060 SAMSUNG Synchronous 166MHz

LCD IM300IBN1A LGIT 8bit access 2 times transmission

Melody IC Not Used S/W Infineon Software CODEC

3.2.4. RF Interface (T_OUT)

S-Gold3 uses this interface to control RF IC and Peripherals. 13 signals are provided switch on/off RF ICs

Periodically each TDMA frame.

Table 2. RF Interface Spec.

T_OUT

Resource Interconnection Description

T_OUT0 TXON_PA PAM Power on

T_OUT1 N/A N/A

T_OUT2 PA_BAND TX RF band select

T_OUT3 N/A N/A

T_OUT4 N/A N/A

T_OUT5 Other function -

T_OUT6 PA MODE PAM Mode select

3.2.5. USIF Interface

GS290 have three USIF Drivers as follow :

- USIF1 : Hardware Flow Control / SW upgrade / Calibration

- USIF2 : Not used Rx, Tx and CTS, RTS use BT Interface

- USIF3 : BT Interface

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