LG GB175 Service Manual Download Page 20

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Noise Reduction

Echo Suppression / Echo Cancellation

Advanced Sidetone Oscillation Reduction

Digital sidetone generator with programmable gain

Two programmable acoustic compensation filters

GSM/GPRS quad vocoders for adaptive multirate (AMR), enhanced full rate (EFR), full rate

(FR) and half rate (HR)

FR error concealment

GSM channel coding, equalization and A5/1, A5/2 and A5/3 ciphering

GPRS GEA1, GEA2 and GEA3 ciphering

Programmable GSM/GPRS Modem

Packet Switched Data with CS1/CS2/CS3/CS4 coding schemes

GSM Circuit Switch Data

GPRS Class 12

Voice Interface and Voice Front End

Two microphone inputs sharing one low noise amplifier with programmable gain and automatic

gain control (AGC) mechanism

Voice power amplifier with programmable gain

2nd order Sigma-Delta A/D Converter for voice uplink path

D/A Converter for voice downlink path

Supports half-duplex hands-free operation

Compliant with GSM 03.50

3.1.4 Multi-Media Features

LCD/NAND Flash Interface

18-bit Parallel Interface supports 8/16 bit NAND flash and 8/9/16/18 bit Parallel LCD

8/16 bit NAND Flash Controller with 1-bit ECC correction for mass storages

2 Chip selects available for high-density NAND flash device

Serial LCD Interface with 8/9 bit format support

LCD Controller

Hardware accelerated display

Supports simultaneous connection to up to 2 parallel LCD and 1 serial LCD modules

Supports format: RGB332, RGB444, RGB565, RGB666, RGB888

Supports LCD panel maximum resolution up to 800x600 at 16bpp

Supports hardware display rotation

Capable of combining display memories with up to 4 blending layers

Accelerated Gamma correction with programmable gamma table.

Image Signal Processor

8 bit YUV format image input

Capable of processing image of size up to VGA

Flexible I/O voltage of 1.8V ~ 2.8V

Audio CODEC

Wavetable synthesis with up to 64 tones

Advanced stereo wavetable synthesizer

Wavetable including GM full set of 128 instruments and 47 sets of percussions

PCM Playback and Record

Digital Audio Playback

HE-AAC decode support

Audio Interface and Audio Front End

Supports I2S interface

Summary of Contents for GB175

Page 1: ...1 GB175 Service Manual LG Electronics ...

Page 2: ...ble 43 4 2 SIM Card Trouble 45 4 3 Vibrator Trouble 47 4 4 Keypad Trouble 48 4 5 RTC Trouble 50 4 6 Key Backlight Trouble 53 4 7 LCM Backlight Trouble 56 4 8 LCM Trouble 58 4 9 Microphone Trouble 60 4 10 Receiver Trouble 62 4 11 Speaker Trouble 64 4 12 Headphone Trouble 66 4 13 Charging Trouble 69 4 14 FM Radio Trouble 71 4 15 RF Trouble 73 5 DOWNLOAD 78 5 1 Download setup 78 5 2 Download Process ...

Page 3: ...he 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 co...

Page 4: ...TENTION Boards which contain Electrostatic Sensitive Devices ESD are indicated by the sign Following information is ESD handing 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 th...

Page 5: ...es MP3 AAC AAC w o DRM FM Receiver Yes US Europe band 87 5 108MHz Loud Speaker Yes Memory Size 256Mb NOR Flash 64Mb PSRAM 6225 support 1 8 or not User Memory Yes 6M Bytes Memory Card Yes Micro SD Scheduled FM recording Yes FM as alarm Yes Embedded FM antenna Yes Pogo pin contact FPC type FM Antenna on Battery cover Audio player real resuming Yes For MP3 only USB Yes Slave 1 1 WAP Yes V2 0 Java Yes...

Page 6: ...ed profiles Y Key Tone Key Tone Volume 6 Level 0 5 0 for Mute Y Key tone setting 4 sets Silent Click Tone English Human voice Y Ring Tone Ring Tone Volume 6 Level 0 5 0 for Mute Y Built in Ring Tone Pattern 20 Y Customizable Ring Tone Link 5 Y Intelligent Call Alert Digits To Sound Synthesizing Y Alert Type 5 Types Ring Vibrate Ring vibrate Ring after vibrate Silent Y Power On Tone Built in Ring T...

Page 7: ...udio option Y World Clock Cities list China 49 IND 51 CIS 65 cities Y Daylight saving time support activated by user selection Y Home city set Y Calculator Addition Subtraction Multiplication Division Y Unit Converter Weight Length Y Currency Converter Health Y BMI Menstrual Y Phone Personalization Setting Greeting Text Y Shortcuts Y Flight Mode Y Time and Date Setting Y Wallpaper Y Screen Saver N...

Page 8: ... up to 9 6K bit s Y Call History Last Dialed Number 50 Y Last Received Number 50 Y Last Missed Number 50 Y Scratch Pad Memory Save an input number in call 1 Y Call Cost Last Call Time Y Total Dialed Call Time Y Total Received Call Time Y Last Call Cost Y Total Cost Y Max Cost Y Price Per Unit Y GPRS Counter Last Sent unit in Byte Y Last Received unit in Byte Y All Sent unit in Byte Y All Received ...

Page 9: ...losed User Group Y Phone Book Quick Search Notice Quick search function only works in Phonebook SMS and MMS In other application this phone supports regular search Y Alpha Store and Recall Y Access Phone Book in call Y Copy Move Y Fixed Dial Number Y Service Dial Number Y Speed Dial Number Y SOS Number Y Entry 1000 names 10 fields Name Mobile Home Office Fax Email Anniversary Ringtone Group memo Y...

Page 10: ...er Y Text Size Normal Large Small Y EMS Image Support 1 bit small image 16x16 pixels black and white Y 1 bit large image 32x32 pixels black and white Y 1 bit variable image in single SMS packet Y Extended black and white 1 bit image up to 255x255 pixels Y Extended 6 bit image up to 255x255 Y Pre defined animation Y User defined small animation 8x8 pixel 4 frame black and white Y User defined large...

Page 11: ...MS notification with icon or Pop up message display Y MMS Message Format Y MMS SMIL A subset of SMIL descried in the MMS Conformance Document 1 2 Y MMS Character Sets Support Y US ASCII Y Unicode Y ISO 8859 1 Y UTF 16 Y UTF 8 Y MMS Images Support Y WBMP Wireless bitmap Y GIF87 Y GIF89a Y JPEG sw decode Y MMS Sound Formats Support Y WAV Y AMR Y MIDI Y MP3 Y MMS Miscellaneous Y Multipart binary MIME...

Page 12: ... Y Message Templates Y Extract media from Message MMS EMS Y Store Media MMS EMS Y Delete Media MMS EMS Y Cell Broadcast Read Cell Broadcast Y Cell Broadcast Mode Receive On Off Y Cell Broadcast Message Language Y Channel Setting Y Network Automatic Network Selection Y Manual Network Selection Y Network Service Status Y Preferred Network User definition Y GPRS connection mode selection Always When ...

Page 13: ...election Get list from Phone Memory card Only available when external memory card supported Y Image Format Support Y JPEG Baseline Y GIF87a Y GIF89a Y WBMP Y BMP Y Music Player Music Player Play Y Pause Y Resume Y Stop Y Next Y Previous Y Storage Selection Get list from Phone Memory card Only available when external memory card supported Y Auto Generate Playlist Y Skin 2 skins Y Repeat Mode All Al...

Page 14: ...ecord Y Pause Y Resume Recording Y Stop Y Melody Compose Edit N Play N Save N Instrument Selection 10 types Piano Guitar Violin Saxophone Steel Drums Flute Harmonica Trumpet Music Box Xylophone N Play Speed Fast Normal Slow N Notice Melody composer only support one instrument in one melody file so the last chosen instrument will be used to play this melody file N FM Radio Frequencies 87 5 108 0 Sk...

Page 15: ...2 2 4 Connectivity Features Function Target Specification Parameter Support WAP WAP 2 0 Spec Y WAP Push OTA Message Y WAP Provisioning Service Y CSD GPRS data connection Y Bookmark Y Wireless Telephony Application WTA support Only Public WTA support supported functions listing below Make a telephone call Send a string of DTMF tones over an established voice connection Add an entry to the telephone...

Page 16: ... 16 3 TECHNICAL BRIEF 3 1 Digital Main Processor Figure 3 1 1 MT6225 FUNCTIONAL BLOCK DIAGRAM ...

Page 17: ... consumption and ensure low noise this interface is designed for flexible I O voltage and allows lowering of the supply voltage down to 1 8V The driving strength is configurable for signal integrity adjustment The data bus also employs retention technology to prevent the bus from floating during a turn over Multi media Subsystem In order to provide more flexibility and bandwidth for multi media pr...

Page 18: ...y programming internal OTP one time programmable fuse Power Management The MT6225 offers various low power features to help reduce system power consumption These features include Pause Mode of 32KHz clocking at Standby State Power Down Mode for individual peripherals and Processor Sleep Mode In addition MT6225 is also fabricated in advanced low leakage CMOS process hence providing an overall ultra...

Page 19: ...urity Supports security key for code protection 143 bit unique secret chip ID Power Management Power Down Mode for analog and digital circuits Processor Sleep Mode Pause Mode of 32KHz clocking at Standby State 7 channel Auxiliary 10 bit A D Converter for charger and battery monitoring and photo sensing Test and Debug Built in digital and analog loop back modes for both Audio and Baseband Front End...

Page 20: ...res LCD NAND Flash Interface 18 bit Parallel Interface supports 8 16 bit NAND flash and 8 9 16 18 bit Parallel LCD 8 16 bit NAND Flash Controller with 1 bit ECC correction for mass storages 2 Chip selects available for high density NAND flash device Serial LCD Interface with 8 9 bit format support LCD Controller Hardware accelerated display Supports simultaneous connection to up to 2 parallel LCD ...

Page 21: ...ment and interrupt handling logics Digital Signal Processor DSP Subsystem including a DSP and its accompanying memory memory controller and interrupt controller MCU DSP Interface where the MCU and the DSP exchange hardware and software information Microcontroller Peripherals which include all user interface modules and RF control interface modules Microcontroller Coprocessors which intend to run c...

Page 22: ... 22 Figure 3 1 2 MT6225 BLOCK DIAGRAM ...

Page 23: ...gle Gallium Arsenide GaAs die One PA block supports the GSM900 band and the other PA block supports the DCS1800 band Both PA blocks share common power supply pads to distribute current The output of each PA block and the outputs to the two receive pads are connected to the antenna pad through PHEMT RF switches and a diplexer The GaAs die PHEMT die Silicon Si die and passive components are mounted ...

Page 24: ...ion The Receiver output pins can be directly connected to the baseband analog processor The Receive path features automatic calibration and tracking to remove DC offsets The transmitter features a translation loop architecture for directly modulating baseband signals onto the integrated TX VCO The translation loop modulator and TX VCO are extremely low noise removing the need for external SAW filt...

Page 25: ... RX Channel Select Filters Programmable Gain Baseband Amplifiers Translation Loop Direct VCO Modulator Integrated TX VCO and tank External TX filters eliminated Integrated Loop filter components High performance multi band PLL system Fast Fractional N Synthesizer Integrated Local Oscillator VCO Fully Integrated Loop filters Crystal Reference Oscillator Tuning System AD6548 Power Management Integra...

Page 26: ...functions to the mobile handset s battery charger and power supply More specifically the management criterion is to provide power to the mobile phone while extending the standby active time as long as possible The block diagram implemented in PMIC is shown further below to describe the relationships between different states Figure 3 4 1 MT6318 FUNCTIONAL BLOCK DIAGRAM ...

Page 27: ...General Description The MT6318 is a power management system chip optimized for GSM GPRS handsets especially those based on the MediaTek MT621x MT622x system solution MT6318 contains 11 LDOs one to power each of the critical GSM GPRS sub blocks Sophisticated controls are available for power up during battery charging for the keypad interface and for the RTC alarm The MT6318 is optimized for maximum...

Page 28: ... 28 3 5 Memory Module PF38F4050M0Y0CG Figure 3 5 1 PF38F4050M0Y0CG FUNCTIONAL BLOCK DIAGRAM ...

Page 29: ...ce blank check security using OTP and zero latency block lock The M18 delivers up to 133 MHz synchronous burst and page mode read rates with multi partitioning Read While Program and Read While Erase operations The synchronous PSRAM Non Mux I O interface is a high performance volatile memory operating at speeds up to 104 MHz with configurable burst lengths The PSRAM lower sixteen addresses can be ...

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Page 31: ... 31 ...

Page 32: ...porates a digital processor for the European Radio Data System RDS and the US Radio Broadcast Data System RBDS including all required symbol decoding block synchronization error detection and error correction functions RDS RDBS enables data such as station identification and song name to be displayed to the user The Si4709 offers a detailed RDS view and a standard view allowing adopters to selecti...

Page 33: ... 33 ...

Page 34: ...GSM 1800 75 MHz Filter 2 GSM 900 35 MHz Unbalanced to balanced operation for both filters Very low insertion attenuation Low amplitute ripple Impedance transformation from 50 W to 150 W for both filters Suitable for GPRS class 1 to 12 Pin configuration 1 Input Filter 1 4 Input Filter 2 6 7 Output balanced Filter 2 8 9 Output balanced Filter 1 2 3 5 10 Case ground ...

Page 35: ...Green and Blue sub pixels and dots which are arranged in vertical stripes Main LCD color is determined with 262 144 colors signal for each pixel The IM152FBN5A has been designed to apply the interface method that enables low power high speed and high contrast The IM152FBN5A is intended to support applications where thin thickness wide viewing angle and low power consumption are critical factors an...

Page 36: ... 36 Figure 3 9 2 IM152FBN5A Block Diagram ...

Page 37: ...TA SIMRST SIMCLK The SIMVCC is used to control the external voltage supply to the SIM card SIMRST is used as the SIM card reset signal SIMDATA and SIMCLK are used for data exchange purpose The SIM interface acts as a half duplex asynchronous communication port and its data format is composed of ten consecutive bits a start bit in state Low eight information bits and a tenth bit used for parity che...

Page 38: ...e something different in the 4 x 5 matrix the key detection block senses the change and recognizes if a key has been pressed or released Whenever the key status changes and is stable a KEYPAD IRQ is issued The MCU can then read the key s pressed directly in KP_HI_KEY KP_MID_KEY and KP_LOW_KEY registers To ensure that the key pressed information is not missed the status register in keypad is not re...

Page 39: ... 39 3 11 Battery Charging Block Interface Figure 3 11 1 Charging IC Interface TheAON4703 is controlled by MT6318 ...

Page 40: ... 40 3 12 Audio Interface Figure 3 12 1 Main Speaker Interface Figure 3 12 2 Main Microphone Recevice Interface ...

Page 41: ...package option total printed circuit board PCB area in most applications This device operates from 2 5V to 5 5V drawing only 1 7mA of quiescent supply current The TPA6202A1 is available in the space saving 2 mm x 2 mm MicroStar Junior BGA package A fast start up time of 4ms with minimal pop makes the TPA6202A1 ideal for wireless handsets ...

Page 42: ... 42 3 13 Vibrator Interface Figure 3 13 1Vibrator Interface This handset has Vibrator operation Control signal is controlled by MT6318 with PMIC ...

Page 43: ...put TP Component Describe Vcore 1 8V TP1 C504 C505 Power on check VDD 2 8V TP2 C513 Power on check AVDD 2 8V TP3 C514 Power on check VMEM 1 8V TP4 C516 Power on check VSIM 1 8V 3V TP5 C517 No detect SIM check point VRTC 1 5V TP6 C518 Power on check VUSB 3 3V TP7 C519 USB fail check point VIB 3 2V TP8 C520 Vibrator fail check point PCB Placement TP1 TP2 TP3 TP4 TP5 TP6 TP7 TP8 ...

Page 44: ...tart Charge or Change Battery Push END key and check the level change of END key Replace U502 Check PMIC Voltage Output U502 3 35V The Phone will Power ON LDO Voltage Vcore 1 8V TP1 VDD 2 8V TP2 AVDD 2 8V TP3 VMEM 1 8V TP4 VSIM 1 8V 3V TP5 VRTC 1 5V TP6 VUSB 3 3V TP7 VIB 3 2V TP8 NO NO NO YES YES YES ...

Page 45: ... 45 4 2 SIM Card Trouble 4 2 1 Test Point 4 2 2 Circuit Diagram VSIM VSIM ...

Page 46: ...rd Our phone supports only 1 8V or 3V SIM Card Does the SIM Card supports 1 8V or 3V Start Re solder J500 Check soldering status of J500 Change U502 Check VSIM 1 8V or 3V NO NG NG YES YES Re download the SW Check operation Change Board NO YES ...

Page 47: ... Vibrator Trouble 4 3 1 Test Point 4 3 2 Circuit Diagram 4 3 3 Checking Flow Change Board Check Voltage Level of Check VIB 3 2V Start NG OK Enter the Engineer Mode and set Vibrator ON Replace Vibrator VIB VIB ...

Page 48: ... 48 4 4 Keypad Trouble 4 4 1 Test Point 4 4 2 Circuit Diagram Key pad Top View ...

Page 49: ... 49 4 4 3 Checking Flow Change Metal Dome Start Change PCB NG OK Check Metal Dome ...

Page 50: ... 50 4 5 RTC Trouble 4 5 1 Test Point 4 5 2 Circuit Diagram XIN XOUT VRTC XIN XOUT ...

Page 51: ... 51 XIN XOUT ...

Page 52: ...hecking Flow Replace X100 and try again Is the Frequency about 32 768kHz Start Replace C100 C103 Check soldering status of C100 C103 Replace U502 Check Voltage C518 1 5V RTC will work properly NO NO NO YES YES YES ...

Page 53: ... 53 4 6 Key Backlight Trouble ...

Page 54: ... 54 4 6 1 Test Point 4 6 2 Circuit Diagram TP8 TP8 TP9 TP9 ...

Page 55: ...eplace U100 or Change PCB Check R901 TP8 2 8V Start Replace U800 Check R901 TP9 Vbat Yes NO No YES Change PCB Replace Component LED800 LED809 ignore LED802 LED 803 Check LED Component LED800 LED809 ignore LED802 LED 803 NO YES ...

Page 56: ... 56 4 7 LCM Backlight Trouble 4 7 1 Test Point TP11 TP10 TP12 ...

Page 57: ...502 or Change PCB Check Voltage Level of C507 TP10 5V Start Check C506 TP11 soldering NO Yes YES No Change PCB Change LCM Check J201 TP12 soldering Yes No Re solder C506 TP11 TP10 Change other LCM then to double check No Re solder J201 or Replace a new one ...

Page 58: ... 58 4 8 LCM Trouble 4 8 1 Test Point 4 8 2 Circuit Diagram TP13 TP14 TP14 TP13 ...

Page 59: ... 59 4 8 3 Checking Flow Change PCB Backlight is OK Start Replace Component or LCM or U100 Check Control C208 TP13 R210 TP14 2 8V NO NG YES OK Change PCB Replace J201 Check soldering status of J201 NG OK ...

Page 60: ... 60 4 9 Microphone Trouble 4 9 1 Test Point 4 9 2 Circuit Diagram TP15 TP15 ...

Page 61: ... 61 4 9 3 Checking Flow Echo Loop Start Replace U100 BB Check Voltage R903 TP15 2 2V Assembly receiver Check Assembly have receiver NO NO YES YES OK Replace U100 or Change PCB ...

Page 62: ... 62 4 10 Receiver Trouble 4 10 1 Test Point 4 10 2 Circuit Diagram TP16 TP17 TP16 TP17 ...

Page 63: ... 63 4 10 3 Checking Flow Echo Loop Start YES Replace U100 or Change PCB Re assembly Check Receiver on assembly is good NG OK Re solder or Replace Component Check Component status L303 L304 NG OK ...

Page 64: ... 64 4 11 Speaker Trouble 4 11 1 Test Point 4 11 2 Circuit Diagram TP21 TP22 TP20 TP26 TP27 TP24 TP23 TP25 TP20 TP26 TP21 TP22 TP23 TP24 TP27 TP25 ...

Page 65: ...heck setp3 NO NO YES NO Done Play music check TP20 have sin wave NO YES Done Setp1 Setp2 Re soldering C402 Check again Go to Step1 Change PCB Change U100 Check NO NO YES YES YES Change U100 Play music check TP21 TP22 have sin wave Setp3 Check the voltage TP23 TP24 3 4V Setp4 Check the voltage TP25 Vbat NO Setp5 Check the voltage TP26 TP27 2 8V Change PCB ...

Page 66: ... 66 4 12 Headphone Trouble 4 12 1 Test Point 4 12 2 Circuit Diagram TP28 TP29 TP30 TP30 TP28 TP29 ...

Page 67: ...the phone change to the earphone mode NO YES Re solder or replace the component Check voltage level of R304 TP30 VMIC 2 2V Re solder cause component J300 Check component status around VMIC YES NO Earphone Check the signal level and R300 R302 TP28 Is it about 1 2 1 5VDC with a few tens mV AC Check U100 EGV NO YES YES MIC ...

Page 68: ... or Change PCB Does waveform at R300 R302 C300 C302 TP28 Re solder component J600 Earphone Re soldering B300 B301 or Change PCB Does waveform at B300 B301 TP29 Does waveform at J600 Change another Ear Mic set and Try again YES YES YES YES NO NO ...

Page 69: ... 69 4 13 Charging Trouble 4 13 1 Test Point 4 13 2 Circuit Diagram TP31 TP31 ...

Page 70: ...rging is properly operating NO Re solder the J301 pin12 13 15 VCHARGE I O Connector J301 is soldering well NO YES Replace the U502 Remove batter then check bat have not or voltage NO YES Check the U501 Check the U501 pin4 have or not voltage NO YES Battery is charged The battery may have problem Change the Battery YES ...

Page 71: ... 71 4 14 FM Radio Trouble 4 14 1 Test Point 4 14 2 Circuit Diagram TP32 TP33 TP33 Wireless FM test point TP32 Wireless FM test point ...

Page 72: ...tart Change U300 NO Replace the J300 YES Check a condition of Ear Jack connector solder J300 for Ext FM ANT Check C318 TP33 have or not 32KHz Check Antenna matching Re solder C318 NO YES YES NO Re solder L300 A condition is Good ...

Page 73: ... 73 4 15 TRX PAM 4 15 1 Test Point TP38 TP37 TP34 TP35 TP39 TP36 TP40 ...

Page 74: ... 74 4 15 2 Circuit Diagram TP34 TP35 TP36 TP37 TP41 TP40 TP39 ...

Page 75: ... LDO Start Setp1 Check the voltage TP34 Vbat Re solder B702 NO YES Setp2 Check the voltage TP35 2 8V when make a call Re solder C726 NO YES Setp3 Check the voltage TP36 2 8V when make a call Re solder R707 NO YES Change U701 ...

Page 76: ...4 15 3 Checking TRX YES NO NO Start Setp1 Check TP37 has 26MHz sine wave Re solder R705 C709 Re solder X700 or Change X700 Change PCB NO YES Re start Setp2 Check TP38 2 8V NO Re solder B701 Change U700 YES ...

Page 77: ... Checking PAM YES Start Setp1 Check TP39 Vbat Setp2 Check TP40 2 8V Change U600 or PCB YES NO Re solder C614 C615 C616 NO Re solder B600 Setp3 Check TP41 components soldering well YES NO Re solder TP41 components ...

Page 78: ... 78 5 DOWNLOAD 5 1 Download setup ...

Page 79: ...ial 2 PC 3 Battery 3 8 V Li ion Battery How to install Leo download tool 1 You must install Prolific USB to Serial Comm Port driver first before installing this program and then double click the Setup msi start installation 2 You can see the below picture and then click the Next button ...

Page 80: ... 80 3 You can see the below picture and then click the Next button 4 You can see the below picture and then click the Next button ...

Page 81: ... 81 5 You can see the below Installing picture and then click the Close button installation complete ...

Page 82: ... 82 How to use Leo download tool For example GB170 00 V09a CIS XX JUN 08 2009 1 Connect Download cable with computer and then double click the LEO Download Tool 2 you can see the below picture ...

Page 83: ... Download ROM it will download software only If you select Download ROM and Format it will download software and delete NVRAM all data except calibration data and IMEI number and delete user disk data include contact information message etc also it still will reset META_NVRAM to factory default ...

Page 84: ... 84 5 Click the Setting button and select a valid file The file always be end of PCS reference below picture 6 Select the PCS file and press open you can see following picture ...

Page 85: ... 85 7 After you see the pink cycle connect download cable with handset and then press the power key you will see below picture 8 After reach to 100 SW download finish ...

Page 86: ... 86 9 If download failed you will see the below picture Attention If appear failed image Please try close LEO and try open again ...

Page 87: ... 87 6 BLOCK DIAGRAM ...

Page 88: ... 88 7 CIRCUIT DIAGRMA ...

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Page 96: ... 96 8 BGA IC PIN Check 8 1 BGA PIN Check of main chip MT6225 BB_MT6225 U100 BGA use BGA non us ...

Page 97: ... 97 8 2 BGA PIN Check of Memory PF38F4050M0Y0CG PF38F4050M0Y0CG U200 BGA use BGA non use ...

Page 98: ... 98 8 3 BGA PIN Check of PMIC MT6318 MT6318 U502 BGA use BGA non use ...

Page 99: ... 99 9 PCB LAYOUT TOP J401 Receiver PAD No receiver ...

Page 100: ... No power on No service etc U700 Transceiver AD6548 No network J200 Trans Flash Socket Micro SD No working J300 Earphone connector Earphone not working JBAT500 Battery Connector No Charging No Power On J201 LCM connector No display U502 PMIC MT6318 No power on No network J500 SIM connector No SIM U600 SKY77518 No TX No RX ...

Page 101: ...e 2 Test SIM Standard 1 3 1 3 Sample Hands free Kit SHF Stereo 3 Test Procedure 3 1 Appearance Test Verify appearance by visual check 3 2 SIM Test Verify recognition of SIM card If Insert SIM indicated on Display it is NG 3 3 Enter Service Mode 3 1 1 No SIM Card installed a Power on Phone b Press 878 to enter service mode 3 1 2 SIM Card installed a Power on Phone b Press 878 to enter service mode ...

Page 102: ...8 UART 19 Camera 20 Radio Auto Test Mode This auto test mode is designed to do the baseband test automatically When you finish all tests phone will report the result for you Enter and Exit Auto Test Mode In the idle screen enter 878 and the Auto Test Mode menu will show up In Auto Test Mode main menu press Left Soft Key LSK Start will process the test automatically or End key to go back to the idl...

Page 103: ... 103 Work Flow ...

Page 104: ...ator on off on every 0 5sec 4 MIC Enable microphone audio path to pass input sounds to receiver for checking the microphone and receiver component 5 KeyPad Test all keypad keys All the keys are displayed on the screen When a key is pressed the depression is detected and the key disappears from the screen Once all keys are detected the test stops and exits 6 Headset To test the analog loop back pat...

Page 105: ... 105 11 CALIBRATION 11 1 Test Equipment set up ...

Page 106: ...iver Radio Communication Tester Rohde Schwarz CMU 200 Agilent 8960 Anritsu MT8820 Rohde Schwarz CMD55 Willtek WT4400 Agilent N4010A for Bluetooth test Rohde Schwarz CBT for Bluetooth test Anritsu MT88852 for Bluetooth test DC Power Supply Agilent 661x or Agilent 663x2 series power supply R S NGSM Power Supply KEITHLEY 2303 2304 2306 Agilent 3631A power supply Willtek WT4400 power supply option Oth...

Page 107: ... 107 The following diagrams depict the system setups when using the Agilent test platform Connect 8960 power supply computer phone ...

Page 108: ... 108 When install the MTK ATE tool first install driver In turn execute CF06PP_INST_DRIVERS_663XXA exe winnt_8960_e1960 exe 230x 850a01 exe ...

Page 109: ... 109 ...

Page 110: ...allation Wizard guides the user through the installation process step by step up to Installation finish Third to install the MTK ATE tool execute the KP320 Volume1 setup exe file The Installation Wizard guides the user through the installation process step by step up to Installation finish ...

Page 111: ... 111 Execute Measurement Automation to check equipment address Choose Devices and Interfaces ...

Page 112: ... 112 You can see your equipment address Choose Topaz2_Setup_090518 ini and open the file to setup from data files For example GB170 ...

Page 113: ... 113 Setup your CMU Base GPIB address and power supply address ...

Page 114: ... 114 ATE Tool system setting Execute MTK _ ate demo Press Report System button ...

Page 115: ... 115 Setting your equipment Setting your power supply type Choose your Power Supply Type ...

Page 116: ... 116 Setting your GSM EDGE Tester Choose your download com port Choose your Tester Choose your download cable connect COM port ...

Page 117: ... 117 Choose select test setup file Execute MTK _ ate demo again To select the setup file in this icon For example 7213_SETUP_090518 ini ...

Page 118: ... INI Choose Con fig File Choose NVRAM Database file To select the ini file in this icon For example 7213_090518 ini To select the CFG file in this icon For example 7213_AD6548_090518 CFG To select the SW database in this icon ...

Page 119: ... 119 How to setup your test report location Choose my computer Choose C disk ...

Page 120: ... 120 Choose program files Choose Program Files ATE Tools KP199_KP320_KM330_KM335_KC530 file ...

Page 121: ... 121 Setup new file and leave the window Execute MTK _ ate demo ...

Page 122: ... 122 Press Report System button Press select test report location ...

Page 123: ... 123 Choose your setup report Press Done ...

Page 124: ... 124 Setup finish When you finish the setup then you press save change icon ...

Page 125: ... 125 Press Configuration choose Cal Setting Setting your cable loss ...

Page 126: ... 126 Press Done to save Press Configuration choose Final setting ...

Page 127: ... 127 Choose MT Call from Establish Call Type Key in your test SIM card number form IMSI NUMBER Press Done and save your setting ...

Page 128: ... 128 If you want calibration you can press initial calibration Press Calibration Test ...

Page 129: ... 129 Key in your phone bar Code Press your phone of power on key and Start calibration ...

Page 130: ... 130 Calibration is ok and will show PASS You can see the test report ...

Page 131: ... 131 If you want final test you can press initial final test ...

Page 132: ... 132 Press RF Final test ...

Page 133: ... 133 1 Handset to insert SIM card 2 Key in bar code or IMEI number 3 power on handset ...

Page 134: ... 134 ATE start final test ...

Page 135: ... 135 If ATE test finish ATE will show pass ...

Page 136: ... 136 You can see the test report ...

Page 137: ... 137 If you want initial cal and final test you can press initial cal and final test ...

Page 138: ... 138 Press Cal Final ...

Page 139: ... 139 1 Handset to insert SIM card 2 Key in bar code or IMEI number 3 Power on handset ...

Page 140: ... 140 Start calibration ...

Page 141: ... 141 Calibration finish and power on handset again ...

Page 142: ... 142 Start final test ...

Page 143: ... 143 Finish Cal Final test ...

Page 144: ... 144 Ate show the test report ...

Page 145: ...TAND ALONE TEST 12 1Test Configuration Expected Outcome Test Configuration Expected Outcome TX power 32 5 1 5 dBm for GSM900 TX power 29 5 1 5 dBm for DCS1800 PCS1900 RX power 85 4 dBm for GSM900 DCS1800 PCS1900 ...

Page 146: ... 146 12 2 META Install RF TX RX Check META Tool Install process 1 Press setup exe then press 2 Install Process press Next 3 Install Process press Next ...

Page 147: ... 147 4 Install Process press Next 5 Install Process press Next 6 Install Process ...

Page 148: ... 148 7 Install Process press Finish ...

Page 149: ... 149 12 3 RF RX Check 1 Open Meta_RF_Tool 2 Pull in UART cable 3 Inset RF Cable AG8960 4 Select proper com port and press Reconnect Step1 Step2 ...

Page 150: ... 150 5 Press handset s power key and it will show LG logo Than appear the following picture Select RF Tool 6 Loading database Make sure the same to handset ...

Page 151: ... 151 7 Press PM to RX check Select proper Band ARFCN and PM Count 8 Setup AG8960 Press CALL SETUP Than press F1 and select GSM BCH TCH ...

Page 152: ... 152 9 RX Test AG8960 Set BCH Parms 10 RX Test Press Start then Only check top 5 items Check first 5 items need 4 inside 1 Select Band GSM DCS PCS 2 Set channel members 3 Press Start ...

Page 153: ... in UART cable 3 Inset RF Cable AG8960 4 Select proper com port and press Reconnect and then press handset s power key 5 Loading database Make sure the same to handset 6 AG8960 need to set TCH Parms 7 Press TX level and profile to TX Test Step2 Step1 ...

Page 154: ... 154 8 TX Test AG8960 Need set Band Channel Power Level TX Output power 1 Select Band GSM DCS PCS 2 Set channel members 3 Press Start ...

Page 155: ... 155 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 Exploded view ...

Page 156: ... 156 Ass y exploded view ...

Page 157: ...w 409 00000 0090 GMEY0023101 Machine Screw_Pan Head_Cross JCIS _1 6mm_3 90mm_BLACK_Steel_Plating Zinc_H N M_NYLOK 5 18 2 Antenna Cover Sub Ass y 8M07 7213 B001 AANY0002201 Antenna Cover Sub Ass y_7213_BLACK_FOR LG 1 19 3 CARRIER FOR ANTENNA 415 72130 0008 MFEZ0022901 BRACKET_7213_BLACK_PC_N A_CARRIER FOR ANTENNA_A TEK PRECISION SUZHOU _N A 1 20 3 Antenna 330 0000 00161 SNGF0053101 ANTENNA EMBEDDED...

Page 158: ...CASE 415 72130 0005 ACKA0020501 CASE_7213_SILVER_STAINLESS STEEL COPPER NICKEL ZINC ALLOY_N A_BB SHIELDING CASE_PLIGHT JIANGSU _FR AME COVER 1 54 5 RF SHIELDING CASE 415 72130 0006 ACKA0020601 CASE_7213_SILVER_STAINLESS STEEL COPPER NICKEL ZINC ALLOY_N A_RF SHIELDING CASE_PLIGHT JIANGSU _FR AME COVER 1 55 3 LCD 327 0000 00081 SVLM0037101 LCD TFT_Transmissive_128x128 Pixels_1 50 inch_IM152FBN5A_LG ...

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Summary of Contents for GB175

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LG GB175, Service Manual, Page: 20 / 158

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Summary of Contents for GB175

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