LG lg530g User manual
Internal Use Only
Service Manual
LG530G
Date: July, 2012 / Issue 1.0
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LGE Internal Use Only
Table Of Contents
1. INTRODUCTION..................................................................... 3
1.1 Purpose....................................................................................................3
1.2 Regulatory Information ....................................................................3
1.3 Abbreviations........................................................................................5
2. PERFORMANCE...................................................................... 7
2.1 Electrical characteristics....................................................................7
2.2. RF...............................................................................................................9
2.3 Current Consumption..................................................................... 16
2.4 530G Figures....................................................................................... 16
3. TECHNICAL BRIEF................................................................ 17
3.1 RF Technical Description................................................................ 17
3.2 WCDMA Part....................................................................................... 18
3.3 EDGE/GPRS/GSM RF block............................................................ 25
3.4 Control Flow.......................................................................................31
3.5 BB Technica Description................................................................32
3.6 Power management........................................................................ 43
3.7 Memory................................................................................................ 47
4. TROUBLE SHOOTING .......................................................... 49
4.1 RF Component................................................................................... 49
4.2 RF Path..................................................................................................51
4.3Trouble Shooting of GSM Part (GSM850/900/1800/1900)
........................................................................................................................ 52
4.4Trouble Shooting of WCDMA Part ............................................. 61
4.5 Checking Bluetooth Block ............................................................ 69
4.6 Checking GPS Block......................................................................... 72
4.7 Power ON Troubleshooting.......................................................... 76
4.8 Charger Troubleshooting.............................................................. 79
4.9 USB Troubleshooting...................................................................... 80
4.10 USIM Detect Troubleshooting..................................................82
4.11 Camera Troubleshooting............................................................ 84
4.12 Main Keypad Backlight Troubleshooting............................. 86
4.13 LCD Troubleshooting.................................................................... 87
4.14 Vibrator............................................................................................... 89
4.15 Receiver Path ................................................................................... 91
4.16 Headset path ...................................................................................93
4.17 Speaker phone path..................................................................... 95
4.18 Main microphone.......................................................................... 97
4.19 Headset microphone....................................................................99
5. DOWNLOAD.......................................................................101
6. BLOCK DIAGRAM...............................................................120
7. CIRCUIT DIAGRAM ............................................................132
8. BGA Pin Map......................................................................140
9. PCB LAYOUT.......................................................................144
10. CALIBRATION...................................................................148
10.1 Conguration of Tachyon.........................................................148
10.2 How to use Tachyon....................................................................150
11. EXPLODED VIEW & REPLACEMENT PART LIST .............152
11.1 EXPLODED VIEW...........................................................................152
11.2 Replacement Parts.......................................................................155
11.3 Accessory ........................................................................................181
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1. INTRODUCTION
1. INTRODUCTION
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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 this phone 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 this model 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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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
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.
2. INTRODUCTION
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1.3 Abbreviations
For the purposes of this manual, following abbreviations apply:
Offset Phase Locked LoopOPLL
Light Emitting DiodeLED
Low Drop OutputLDO
Liquid Crystal DisplayLCD
Intermediate FrequencyIF
International Portable User IdentityIPUI
Global System for Mobile CommunicationsGSM
General Purpose Interface BusGPIB
Gaussian Minimum Shift KeyingGMSK
Flexible Printed Circuit BoardFPCB
Electrostatic DischargeESD
Electrical Erasable Programmable Read-Only MemoryEEPROM
Digital Signal ProcessingDSP
dB relative to 1 milli wattdBm
Digital Communication SystemDCS
Digital to Analog ConverterDAC
Constant Current – Constant VoltageCC-CV
Bit Error RatioBER
BasebandBB
Automatic Power ControlAPC
1. INTRODUCTION
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Wireless Application Protocol
WAP
Voltage Control Temperature Compensated Crystal OscillatorVCTCXO
Voltage Controlled OscillatorVCO
Universal Asynchronous Receiver/TransmitterUART
Time Division Multiple AccessTDMA
Time Division DuplexTDD
Travel AdapterTA
Side Tone Masking RatingSTMR
Pseudo SRAMPSRAM
Static Random Access MemorySRAM
Sending Loudness RatingSLR
Subscriber Identity ModuleSIM
Surface Acoustic WaveSAW
Real Time ClockRTC
Root Mean SquareRMS
Receiving Loudness RatingRLR
Radio FrequencyRF
Public Switched Telephone NetworkPSTN
Phase Locked LoopPLL
Programmable Gain AmplifierPGA
Printed Circuit BoardPCB
Power Amplifier ModulePAM
1. INTRODUCTION
2. PERFORMANCE
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2. PERFORMANCE
2.1 Electrical characteristics
FP 2Gr. Items Remark
Network
CDMA No -
Band No -
2G Half EDGE(RX only) Must
Band Quad (850 / 900 / 1800 / 1900) Nice
3G HSDPA 3.6 Must
Band UMTS(850/1900) Must
Multi-SIM / Type No -
Band No -
Etc. No -
Chipset Baseband (Clock) QSC6270 (230Mhz) Must
Memory
System 2Gb / 1Gb Must
User 60MB TBD
External Slot Micro SD, Up to 32GB Must
Display Size / Resolution 2.3” / QVGA(320x240) Must
Type TFT Must
Sub Display Size / Resolution No -
Type No -
Touch Type No -
Handwriting No -
Camera
Main 1.3M FF Must
Features - -
VT No -
Flash No -
Battery Capacity / Type 1000mAh / Li-ion Must
Talk / Stand-by Time 180 min / 250 Hrs Nice
Speaker Size / Type 18x12 -
Audio
2nd Microphone No -
FM radio No -
Headset Jack 3.5mm Must
Etc. No -
2.1 Electrical characteristics
2. PERFORMANCE
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FP 2Gr. Items Remark
Connectivity
Bluetooth 2.1 + EDR Must
USB 2.0 High Speed Must
Wi-Fi No -
A-GPS Yes (with SUPL) Must
NFC No -
Etc. No -
Sensor No -
Design
New-tech. No -
Acc. Inbox
TA / Type Standard Must
Data cable No -
Ear Mic. No -
Manual Yes Must
External Memory No -
CD No -
Etc. No -
Outbox No -
SW Spec.
OS / UI LGE Proprietary/ Basic keypad Must
Codec Audio MP3 / AAC / AAC+/WMA Must
Video MPEG4/H.263/H.264 Must
Video Recoding 15fps@QCIF Must
Playback 15fps@QVGA Nice
MIDI 64 Poly, MP3 Ringtone Must
Phonebook * Field 1000 EA Must
SMS 500 EA Must
Messaging SMS / MMS / Email Must
IM ver. IM Must
Push email Yes(Native) Must
SNS Yes(Wap Link) Nice
Browser Web-kit browser(Obigo) Must
WAP / Java 2.0 / 2.1 Must
Game TBD -
Market / Operator
Requirement
HAC (NA) Yes Must
HD Voice (EU) No -
Etc. Prepaid Engine Must
Additional
Features
Pop-up noti. Must
Message blinker Must
Conference call(Up to 5 way) Nice
2. PERFORMANCE
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2.2. RF
1) GSM Transmitter Specification
NO Category GSM DCS/PCS
1
Conducted
Spurious
Emission
MS allocated
Channel
100kHz ~ 1GHz -36dBm
100kHz~1GHz -36dBm
1G ~ 1710MHz -30dBm
1GHz ~ 12.75GHz -30dBm
1.710GHz~1.785GHz -36dBm
1.785GHz~12.75GHz -30dBm
Idle Mode
100kHz~880MHz -57dBm 100kHz~880MHz -57dBm
880MHz~915MHz -59dBm 880MHz~915MHz -59dBm
915MHz~1GHz -57dBm 915MHz~1GHz -57dBm
1GHz~1.710GHz -47dBm 1GHz~1.710GHz -47dBm
1.710GHz~1.785G
Hz -53dBm 1.710GHz~1.785GHz -53dBm
1.785G~12.75GHz -47dBm 1.785GHz~12.75GHz -47dBm
Radiated
Spurious
Emission
MS allocated
Channel
30M ~ 1GHz -36dBm
30M ~ 1GHz -36dBm
1GHz ~ 1710MHz -30dBm
1G ~ 4GHz -30dBm
1710MHz~1785MHz -36dBm
1785MHz~4GHz -30dBm
Idle Mode
30M ~ 880MHz -57dBm 30M ~ 880MHz -57dBm
880M ~ 915MHz -59dBm 880M ~ 915MHz -59dBm
915M ~ 1GHz -57dBm 915M ~ 1GHz -57dBm
1G ~ 1710MHz -47dBm 1G ~ 1710MHz -47dBm
1710M~1785MHz -53dBm 1710M~1785MHz -53dBm
1785M ~ 4GHz -47dBm 1785M ~ 4GHz -47dBm
2 Frequency Error < 0.1 ppm < 0.1 ppm
3 Phase Error RMS < 5 degrees RMS < 5 degrees
Peak < 20 degrees Peak < 20 degrees
4
Frequency Error Under
Multipath and
Interference
Condition
3dB below reference sensitivity 3dB below reference
RA250: 300Hz RA130: 0Hz
HT100: 0Hz HT100: 350Hz
TU50: 0Hz TU50: 260Hz
TU3: 0Hz TU1,5: 320Hz
2.2. RF
1) GSM Transmitter Specication
2. PERFORMANCE
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5
Output
RF Spec
trum
Due to
modulation
100kHz +0.5dB 100kHz +0.5dB
200kHz -30dB 200kHz -30dB
250kHz -33dB 250kHz -33dB
400kHz -60dB 400kHz -60dB
600~<1,800kHz -60dB 600~<1,800kHz -60dB
1,800~<3,000kHz -63dB 1,800~<3,000kHz -65dB
3,000~<6,000kHz -65dB 3,000~<6,000kHz -65dB
>6,000kHz -71dB >6,000kHz -73dB
Due to Swit
ching
transient
400kHz -19dB 400kHz -22dB
600kHz -21dB 600kHz -24dB
1200kHz -21dB 1200kHz -24dB
1600kHz -24dB 1600kHz -27dB
6 Intermodulation
attenuation
Frequency offset 800kHz
Intermodulation product sho
uld be Less than 55dB below
the level of Wanted signal
7 Transmitter
Output Power
Power
control
Level
Power
(dBm)
Tolerance
(dB)
Power
control
Level
Power
(dBm)
Toler
ance
(dB)
5 3333 ±2dB 0 30 ±2dB
6 31 ±3dB 1 28 ±3dB
7 29 ±3dB 2 26 ±3dB
8 27 ±3dB 3 24 ±3dB
9 25 ±3dB 4 22 ±3dB
10 23 ±3dB 5 20 ±3dB
11 21 ±3dB 6 18 ±3dB
12 19 ±3dB 7 16 ±3dB
13 17 ±3dB 8 14 ±3dB
14 15 ±3dB 9 12 ±4dB
15 13 ±3dB 10 10 ±4dB
16 11 ±5dB 11 8 ±4dB
17 9 ±5dB 12 6 ±4dB
18 7 ±5dB 13 4 ±4dB
19 5 ±5dB 14 2 ±5dB
15 0 ±5dB
8 Burst timing Mask IN Mask IN
2. PERFORMANCE
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2) GSM Receiver Specification
NO Category GSM DCS/PCS
1 Sensitivity (TCH/FS Class II) -102dBm -100dBm
2 Co-Channel Rejection
(TCH/FS Class II, RBER, TUhigh/FH) C/Ic= 7dB C/Ic= 7dB
3 Adjacent Channel Rejection
(Speech Channel)
200kHz C/Ia1= -12dB C/Ia1= -12dB
400kHz C/Ia2= -44dB C/Ia2= -44dB
4 Intermodulation Rejection
Wanted Signal: -98dBm Wanted Signal: -96dBm
1’st interferer: -44dBm 1’st interferer: -44dBm
2’nd interferer: -45dBm 2’nd interferer: -44dBm
5 Blocking Response
(TCH/FS Class II, RBER)
Wanted Signal: -101dBm
Unwanted Signal:
Depend on freq.
Wanted Signal: -101dBm
Unwanted Signal:
Depend on freq.
•All uncommented feature shall support GSM 11.10 and GCF(GSM Certification Forum)
2) GSM Receiver Specication
•All uncommented feature shall support GSM 11.10 and GCF(GSM Certication Forum)
2. PERFORMANCE
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Item Specification
Transmit Frequency WCDMA850 : 824 MHz ~ 849 MHz
WCDMA1900 : 1850 ~ 1910 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
Power Ratio (ACLR)
> 33 dB @ ±5 MHz,
> 43 dB @ ±10 MHz
Spurious Emissions
|f-fc| > 12.5 MHz
< -36 dBm / 1 kHz RW @ 9 kHz ≤ f < 150 kHz
< -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 Inter-modulation < -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
3) WCDMA Transmitter Specification
3) WCDMA Transmitter Specication
2. PERFORMANCE
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Item Specification
Receive Frequency WCDMA850 : 849 MHz ~ 894 MHz
WCDMA1900 : 1930MHz ~ 1990 MHz
Reference Sensitivity Level BER < 0.001 when Îor = -106.7 dBm / 3.84 MHz
Maximum Input Level BER < 0.001 when Îor = -25 dBm / 3.84 MHz
Adjacent Channel
Selectivity (ACS)
ACS > 33 dB where BER < 0.001 when Îor = -92.7 dBm / 3.84 MHz
& Ioac = –52 dBm / 3.84 MHz @ ±5 MHz
Blocking Characteristic BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz
& Iblocking = -56 dBm / 3.84 MHz @ Fuw(offset) = ±10 MHz
or Iblocking = -44 dBm / 3.84 MHz @ Fuw(offset) = ±15 MHz
Spurious Response BER < 0.001 when Îor = -103.7 dBm / 3.84 MHz & Iblocking = -44 dBm
Intermodulation BER < 0.001 when Îor= -103.7 dBm / 3.84 MHz
& Iouw1 = -46 dBm @ Fuw1(offset) = ±10 MHz
& Iouw2 = -46 dBm / 3.84 MHz @ Fuw2(offset) = ±20 MHz
Spurious Emissions < -57 dBm / 100 kHz BW @ 9 kHz ≤ f < 1 GHz
< -47 dBm / 1 MHz BW @ 1 GHz ≤ f ≤ 12.75 GHz
4) WCDMA Receiver Specification
4) WCDMA Receiver Specication
2. PERFORMANCE
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Item Specification
Transmit Frequency 824 MHz ~ 849 MHz
1850MHz ~ 1910 MHz
Maximum Output
Power
Sub-Test
1=1/15, 2=12/15 21~25dBm / 3.84 MHz
3=13/15 4=15/8 20~25dBm / 3.84 MHz
5=15/7 6=15/0 19~25dBm / 3.84 MHz
HS-DPCCH
Spectrum Emission
Mask
Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
Adjacent Channel
Leakage
Power Ratio (ACLR)
Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
> 33 dB @ ±5 MHz
> 43 dB @ ±10 MHz
Error Vector Magnitude < 17.5 %, when Pout ≥ -20 dBm
Sub-
test in
table
C.10.1.
4
Power
step
Power step slot
boundary
Power
step size,
P [dB]
Transmitter
power step
tolerance
[dB]
5
1 Start of Ack/Nack 6 +/- 2.3
2 Start of CQI 1 +/- 0.6
3 Middle of CQI 0 +/- 0.6
4 End of CQI 5 +/- 2.3
Frequency offset from
carrier △f Minimum requirement Measurement
Bandwidth
2.5 ~ 3.5 MHz -35-15×(△f-2.5)dBc 30 kHz
3.5 ~ 7.5 MHz -35-1×(△f-3.5)dBc 1 MHz
7.5 ~ 8.5 MHz -35-10×(△f-7.5)dBc 1 MHz
8.5 ~ 12.5 MHz -49dBc 1 MHz
5) HSDPA Transmitter Specification
5) HSDPA Transmitter Specication
2. PERFORMANCE
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Item Specification
Receive Frequency
849 MHz ~ 894 MHz
1930 MHz ~1990 MHz
Maximum Input Level
(BLER or R), 16QAM Only
Sub-Test : 1=1/15, 2=12/15, 3=13/15, 4=15/8, 5=15/7, 6=15/0
BLER < 10% or R >= 700kbps
6) HSDPA Receiver Specification
6) HSDPA Receiver Specication
2. PERFORMANCE
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WCDMA Only
GSM Only
Standby
3.0mA(DRX=1.28sec) ↓3.00mA(PP=5) ↓
Talk Mode
270 mA (Tx Lvl : 12dBm) ↓
280 mA (Tx Lvl:5) ↓
Power Off
(Backup Battery Charging중)
300㎂↓
500㎂↓
300㎂↓
500㎂↓
2.3 Current Consumption
2.4. LG530G Figures
2.3 Current Consumption
2.4. LG530G Figures
3. TECHNICAL BRIEF
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3.1 RF Technical Description
The RF platform of LG530G supports two different communication modes (WCDMA/GSM modes)
including four communication bands (W1900/W850/GSM850,GSM900/GSM1800,GSM1900).
The all the RF blocks can be divided into three main parts, which are a WCDMA part, a GSM, and
Antenna switch module. The simplified block diagram is shown in Figure 3.1.1
Figure 3.1.1 Block diagram of RF part
3. TECHNICAL BRIEF
3.1 RF TECHNICAL DESCRIPTION
16
p
a
g
e Fi
g
ure 3.1.1
p g g
Figure 3.1.1 Block diagram of RF part
3. TECHNICAL BRIEF
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3.2 WCDMA Part
The W-CDMA transceiver uses differential analog in-phase and quadrature-phase interfaces, that is an IQ
interface, both in the receiver and transmitter information path. The transceiver has the following general
features:
•Power class : Power class 3 (+24dBm) in Band II and V
•Zero-IF Receiver.No IF filter needed
•Direct IQ modulation transmitter
Figure 3.2.1. WCDMA RF structure
17
p
a
g
e Fi
g
ure 3.2.1
p g g
Figure 3.2.1. WCDMA RF structure
3.2 WCDMA PART
3. TECHNICAL BRIEF
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3.2.1 Transmitter Part
WCDMA Transmitter Block
The QSC62x0 device supports tri-band UMTS transmissions with three separate driver amplifier outputs; in
fact, most Tx active circuits are contained within the device. All three UMTS transmit paths (Figure 3.2.1.1)
begin with a single, shared analog baseband signal from the device’s baseband circuits. The baseband signal
is composed of two differential lines, one in-phase component and one quadrature-phase component. Each
component is lowpass filtered and amplified to levels sufficient for driving the quadrature upconverters.
There are two upconverters — one for low-band signals and one for high band — but only one upconverter is
active at a time.
Figure 3.2.1.1 WCDMA Transceiver Architecture
Figure 3.2.1.1 WCDMA Transceiver Architecture
3.2.1 TRANSMITTER PART
18
p
a
g
e Fi
g
ure 3.2.1.1
p g g
U2100
BPF
U850BPF
3. TECHNICAL BRIEF
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The active upconverter’s output is at the desired RF channel frequency and drives the QSC output stages. These
RF circuits include multiple variable-gain stages that provide transmit AGC control.
A greater than 81 dB gain control range is realized using information from the on-chip Tx power detector
combined with a control signal from the baseband circuits. The wide range of driver amplifier output levels is
achieved while supporting the WCDMA standard’s requirements for ACLR, spurious emissions, Rx-band noise,
etc. The high-band driver amplifier output is followed by a SPDT switch that provides two high-band outputs,
thereby fulfilling the tri-band UMTS requirement. The low-band output port is driven directly by its output
amplifier.
All three output ports are single-ended with 50ohm nominal impedance. Each requires a matching network to
interface with its band-pass filter.
Each of the three UMTS Tx output chains are functionally identical: the QSC Tx output drives the PA through
the band-pass filter and a matching network; a directional coupler provides a sample of the PA output signal;
the through path of the coupler is routed to the Tx port of the duplexer; the duplexer antenna port is
connected to the antenna switch; and the switch is connected to the antenna.
The coupler outputs provide a low-level sample of the active transmitter’s Tx power. An on-chip power-
detector circuit provides a Tx power estimate that assists in setting the transmit gains and helps ensure that
the maximum allowed output power is not exceeded. The three UMTS couplers (one for each band) use a
daisy-chain configuration that allows them to share the single, on-chip power detector circuit.
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