LG T5100 Service Manual Download Page 53

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3. BASEBAND PART TROUBLE SHOOTING

- 54 -

The voltage level at R332 is?

Resolder R332

Yes

Sending Path Problem

Set audio menu of test equipment
to the echo mode

Yes

The soldering

of CN500 is OK ?

Resolder CN500 and

Reconnect

Yes

The soldering

of J1 is OK ?

Resolder J1 and Try again

Change the Earphone

A few tens or hundreds

of mV of signals at C107 are

measured?

The ABB is out of order.

Change the Board

Yes

The voltage level at ADIN4

is below 1.3V ?

S/W Re-download and
try again. If the result is

same, change the board.

Earphone Detect Problem

Yes

The soldering of

R302 is OK ?

Resolder R302

Yes

The soldering of

CN500 is OK?

Yes

The soldering of

J1 is OK ?

Resolder CN500

Resolder J1

Yes

Change the Earphone

Summary of Contents for T5100

Page 1: ...Service Manual Model T5100 Service Manual T5100 P N Date June 2004 Issue 1 0 ...

Page 2: ...rmore LGE Inc reserves the right without notice to make changes to equipment design as advances in engineering and manufacturing methods warrant This manual provides the information necessary to install program operate and maintain the T5100 REVISED HISTORY DATE ISSUE CONTENTS OF CHANGES S W VERSION May 2004 ISSUE 1 Initial Release ...

Page 3: ... D Video Interface 28 E External Audio Codec Interface 29 F DSP Pin description 30 G LCD module pin description 32 H Camera module pin description 33 I Keypad Connector pin description 34 3 BASEBAND PART TROUBLE SHOOTING 36 3 1 Main PCB side components 1 36 3 2 Main PCB side components 2 37 3 3 Keypad side components 39 3 4 Power On Trouble 40 3 5 Charging Trouble 40 3 6 LCD Display Trouble 43 3 7...

Page 4: ...roperties of Service Software 113 7 2 Calibration 116 7 2 1 Overview 116 7 2 2 Equipment List 116 7 2 3 Equipment Setup 117 7 2 4 Calibration steps 117 7 2 5 Test JIG Operation 120 8 CIRCUIT DIAGRAM 121 8 1 RF Interface 122 8 2 Baseband Interface 123 8 3 LCD Connector Camera Connector Keypad Connector 124 8 4 DSP 125 8 5 Memory Interface USB interface 126 8 6 MIDI Audio 127 8 7 I O Receptacle USB ...

Page 5: ... GSM EGSM 33dBm Level 5 DCS 30dBm Level 0 GPRS compatibility Class 10 SIM card type 3V Small Display 176 x 220 TFT LCD main 96 x 96 TFT LCD sub Soft icons Keypad Status Indicator 0 9 Navigation Key Up Down Side Key Shutter Side Key Confirm Key Clear Key Send Key END PWR Key ANT Internal EAR Phone Jack 4 pole earphone jack PC Synchronization Yes Speech coding EFR FR HR Data and Fax Yes Vibrator Yes...

Page 6: ...r Level Power Toler 5 33 dBm ᴦ2dB 13 17 dBm ᴦ3dB 6 31 dBm ᴦ3dB 14 15 dBm ᴦ3dB 7 29 dBm ᴦ3dB 15 13 dBm ᴦ3dB 8 27 dBm ᴦ3dB 16 11 dBm ᴦ5dB 9 25 dBm ᴦ3dB 17 9 dBm ᴦ5dB 10 23 dBm ᴦ3dB 18 7 dBm ᴦ5dB 11 21 dBm ᴦ3dB 19 5 dBm ᴦ5dB 12 19 dBm ᴦ3dB 4 Power Level DCS1800 Level Power Toler Level Power Toler 0 30 dBm ᴦ2dB 8 14 dBm ᴦ3dB 1 28 dBm ᴦ3dB 9 12 dBm ᴦ4dB 2 26 dBm ᴦ3dB 10 10 dBm ᴦ4dB 3 24 dBm ᴦ3dB 11 8 d...

Page 7: ... 000 65 5 Output RF Spectrum 6 000 71 due to modulation DCS1800 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 6 000 73 GSM900 Offset from Carrier kHz Max dBm 400 19 600 21 Output RF Spectrum 1 200 21 6 due to switching transient 1 800 24 DCS1800 Max dBm Max dBm 400 22 600 24 1 200 24 1 800 27 ...

Page 8: ...l Report accuracy ᴦ 3 dB 10 SLR 8 ᴦ 3 dB Frequency Hz Max dB Min dB 100 12 200 0 300 0 12 11 Sending Response 1 000 0 6 2 000 4 6 3 000 4 6 3 400 4 9 4 000 0 12 RLR 2 ᴦ 3 dB Frequency Hz Max dB Min dB 100 12 200 0 300 2 7 500 5 13 Receiving Response 1 000 0 5 3 000 2 5 3 400 2 10 4 000 2 Meanthat Adopt a straight line in between 300 Hz and 1 000 Hz to be Max level in the range 14 STMR 17 dB 15 Sta...

Page 9: ...mA 288 min GSM900 Lvl 12 Battery Capacity 950mA 490 min Under conditions at least 250 hours 1 Brand new and full 950mAh battery 2 Full charge no receive send and keep GSM in idle 22 Standby Time mode 3 Broadcast set off 4 Signal strength display set at 3 level above 5 Backlight of phone set off At least 65 dB under below conditions 23 Ringer Volume 1 Ringer set as ringer 2 Test distance set as 50 ...

Page 10: ... 74V 3 3 87V 4 3 88V ᴦ0 03V 3 62V ᴦ0 03V Call 27 Low Voltage Warning 3 5V ᴦ0 03V Standby 28 Forced shut down Voltage 3 35V ᴦ 0 03 V 1 Li ion Battery 29 Battery Type Standard Voltage 3 7V Battery full charge voltage 4 2V Capacity 950mAh Switching mode charger 30 Travel Charger Input 100 240 V 60Hz Output 5 2V 800mA ...

Page 11: ...cture a transmitter based on a modulation loop architecture and fractional N synthesizer part with built in TXVCO and Local VCO 2 2 Receiver Part The Receiver part in TRF6151 U702 contains all active circuits completely full receiver chain with the exception of discrete front end RF SAW filters The filtered and amplified signal is down converted in the RF mixer to the base band output The receive ...

Page 12: ...gh gain mode is 60dB Front end low gain and VGA high gain mode is 46dB Front end and VGA low gain mode is 20dB The Rx gain setting is done in the AGC algorithm The nominal gain of the receiver is set as a function of the expected signal strength at the antenna input so that a desired level is reached at the Rx I Q The receiver chain in TRF6151 has variable gain parts LNA Mixer LPF VGA VGA Filter A...

Page 13: ...r an offset phase locked loop OPLL The RF GMSK outputs from the transmit VCO are fed directly to the RF power amplifier modules The peak output power and the profile of the transmitted burst are controlled by means of incorporated power control circuits inside of PA and DAC output from the Baseband Controller The PA outputs pass to the antenna connector via Front End Module SHS L090SF FL700 Fig 2 ...

Page 14: ...one is a low band VCO for GSM band and another is a high band VCO for DCS band The RF Main Chipset generates the RFLO signal with Main VCOs The MAINVCO1 is used for GSM900 DCS1800900 Low pass filters before the OPLL phase detect or reduce the harmonic content of the quadrature modulator and feedback mixer outputs The cutoff frequency of the filters is programmable with register setting which regis...

Page 15: ...rect closed loop is fully self contained and it does not require loop optimization It can be driven directly from the DAC output in the baseband circuit On board power control provides over 37 dB of control range with an analog voltage input VAPC Efficiency is about 53 at GSM and about 53 at DCS GSM900 Figure 5 Block Diagram of OPLL DCS DCS OUT GSM 900 OUT GSM 900 IN Figure 6 Internal Functional B...

Page 16: ...6 MHz It is used within the RF Main Chip TRF6151 U702 ABB IOTA U101 DBB CALYPSO U100 2 6 Power Supplies LDO An external LDO U704 is used to provide DC power to VCTCXO X700 Buffer U703 which is used for buffering FEM control signals from DBB and the RF Main Chip TRF6151 U702 Figure 7 Schematic of PAM circuit Figure 8 Schematic of VCTCXO circuit Figure 9 Schematic of LDO circuit ...

Page 17: ...ll fully support the Full Rate Enhanced Full Rate and Half Rate speech coding CALYPSO implements all features for the structural test of the logic full SCAN BIST PMT JTAG boundary SCAN B Block Description CALYPSO architecture is based on two processor cores ARM7 and DSP using the generic RHEA bus standard as interface with their associated application peripherals CALYPSO is composed from the follo...

Page 18: ...Time Serial Port GSM data interface with RF and ABB Memory Interface External Internal Memory Interface nCS0 FLASH1 2 16bit access 3 wait state nCS1 FLAHS1 1 16bit access 3 wait state nCS2 FLASH2 1 16bit access 3wait state nCS3 Ext PSRAM 16bit access 3 wait state nCS4 MIDI 8bit access DSP 16bit access USB 8bit addressing See Fig 11 nCS6 Int SRAM 32bit access 0 wait state Calypso is internally 39MH...

Page 19: ...1 1 AM50PDL193CHH66I AMD 70ns min 70ns min FLASH 1 2 AM50PDL193CHH66I AMD 70ns min 70ns min Pseudo SRAM AM50PDL193CHH66I AMD 70ns min 70ns min DSP SH Mobile V Renesas 80ns max 80ns max Melody IC YMU762 Yamaha 50ns 80ns USB IC USBN9604 N S 80ns 80ns LCD HD66784 RENESAS 150ns max 150ns max Table 2 External Device Spec connected to memory interface TSP Time Serial Port Resource Interconnection Descri...

Page 20: ... Modem UART MODEM UART1 Resource Name Remark TX_MODEM TXD Transmit Data RX_MODEM RXD Receive Data CTS_MODEM CTS Clear To Send RTS_MODEM RTS Request To Send GPIO 3 DSR Data Set Ready UART IRDA UART2 TXIR_IRDA TXIR_IRDA Infra Red Transmit Pulse TX_IRDA TX Transmit Data UART2 RXIR_IRDA RXIR_IRDA Infra Red Receive Pulse RX_IRDA RX Receive Data UART2 SD_IRDA SD_IRDA IrDA transceiver Shut Down Mode Tabl...

Page 21: ...O 0 FOLDER1 I GPIO HIGH Open LOW Closed I O 1 MELODY_INT I GPIO HIGH LOW I O 2 DSP_IRQ O GPIO HIGH LOW I O 3 DSR I GPIO INT HIGH LOW I O 4 N A O GPIO Reserved Reserved I O 5 SIM_PWRCTRL O SIM HIGH HIGH I O 6 STATUS0 I GPIO LOW HIGH I O 7 LCD_BL_EN O GPIO HIGH LOW I O 8 SPK_EN O GPIO LOW HIGH I O 9 LCD_ID I GPIO LOW Neodis HIGH Samsung I O 10 USB_INTR I GPIO HIGH LOW I O 11 FLASH_EN O GPIO LOW HIGH...

Page 22: ...pply voltage regulation Battery charging control Switch ON OFF 1 8V 3V SIM card Interface 4 internal 4external ADC channels B Audio Signal Processing Interface Audio signal processing is divided Uplink path and downlink path The uplink path amplifies the audio signal from MIC and converts this analog signal to digital signal and then transmit it to DBB Chip This transmitted signal is reformed to f...

Page 23: ...t analog I Q signal from RF section and then transmit it to DSP of DBB chip with 270 833kHz data rate through BSP D Voltage Regulation VREG There are 7 LDO Low Drop Output regulators in ABB chip The output of these 7 LDOs are as following table Figure 15 shows the power supply related blocks of DBB ABB and their interfaces in T5100 Figure 14 Baseband Codec Block Diagram Output Voltage Usage VRDBB ...

Page 24: ...2 TECHNICAL BRIEF 25 Figure 15 Power Supply Scheme ...

Page 25: ...he permanent function ULPD To enter into Switch ON state one of following 4 condition is satisfied PWR ON pushed after a debouncing time of 30ms ON_REMOTE After debouncing when a falling edge is detected on RPWON pin IT_WAKE_UP When a rising edge is detected on RTC_ALARM pin CHARGER_IC When a charger voltage is above VBAT 0 4V on VCHG G Memories 192Mbit Flash 64Mbit Pseudo SRAM 16 bit parallel dat...

Page 26: ...uced Instruction Set Computer microcomputer includes a Renesas Technology original RISC CPU as its core and the peripheral functions required to configure a system The SH7300 includes external memory interface SH BUS Multifunction interface MFI Camera interface NAND AND interface Audio PCM interface UART interfcace SIM card interface and ETC B Power circuit T5100 use two external dual LDO regulato...

Page 27: ...rnal devices T5100 uses MCP type memory NAND 256 Mbit SDRAM 128Mbit for processing image storing image D Video Interface SH7300 incorporates a video I O VIO module that can be used to capture an image input from a camera and to perform scaling of a YCbCr RGB image tone reduction and RGB conversion SH7300 chip supports CMOS CCD camera upto 2Mega pixels Figure 17 DSP Power circuit Figure 18 Camera I...

Page 28: ... GPIO pin Net name CAM_PWR_EN as LOW T5100 has a special white LED for camera flash function This function is controlled by GPIO of DBB And the scheme is described at Figure 18 E External Audio Codec Interface In T5100 external audio codec is used for MPEG4 decoding Additionally During incoming call External audio codec amplifys stereo Midi sound outputput Figure 19 Camera Flash LED control scheme...

Page 29: ...AL BRIEF 30 Signal I O Description Connection D 0 15 I Host Data Bus DBB calypso _WR I Host write strobe DBB calypso _RD I Host Read strobe DBB calypso _A 2 I HostCommand Data control DBB calypso YUV 7 0 O Camera data bus DBB calypso C_HSYNC I Camera HSYNC control Camera module C_PCLK o Camera Pixel clock Camera module C_VSYNC I Camera HSYNC control Camera module DSP_INT O DSP interrupt DBB calyps...

Page 30: ...ord clock signal Audio codec 12M_OUT I Audio clock in Audio codec SCIF_TXD O Uart serial data TX JTAG SCIF_RXD I Uart serial data RX JTAG CLK_SDRAM O SDRAM clock SDRAM DSP_RESET I DSP RESET GPIO Expander DSP_CA O DSP Chip Active GPIO Expander ASEMD0 I Emulator mode select IO expander DSP_TRST_N I DSP reset emulator JTAG DSP_TDO I JTAG data out JTAG DSP_TDI O JTAG data in JTAG DSP_TMS O JTAG mode s...

Page 31: ...H bus data LCD SDRAM Table 9 Pin description No Pin Name Function 1 2V8_SRAM Power supply 2 2V8_SRAM Power supply 3 _OE Read strobe 4 LCD_RESET Data input 5 GND Ground 6 V_D 0 Data input 7 V_D 1 Data input 8 V_D 2 Data input 9 V_D 3 Data input 10 V_D 4 Main LCD Backlight 11 V_D 5 VSS 12 V_D 6 Main LCD vender confirmation 13 V_D 7 Backup Battery 14 LCD_BACKLIGHT VCC_LED 15 LED1 VSS_LED1 16 LED2 VSS...

Page 32: ...a data 9 YUV4 Camera data 10 YUV5 Camera data 11 YUV6 Camera data 2 TECHNICAL BRIEF 33 Table 10 Pin description No Pin Name Function 24 GND Ground 25 GND Ground 26 V_D 15 Data input 27 V_D 14 Data input 28 V_D 13 Data input 29 V_D 12 Data input 30 V_D 11 Data input 31 V_D 10 Data input 32 V_D 9 Data input 33 V_D 8 Data input 34 _WEM Write strobe 35 _LCD_CS LCD Chip select 36 _VA 2 Command Data sel...

Page 33: ... supply for I O 22 VLED1 FLASH LED1 23 VLED2 FLASH LED2 24 SPK_P SPEAKER 25 SPL_N SPEAKER 26 GND Ground No Pin Name Function 1 GND Ground 2 FOLDER1 Folder on off detection 3 GND Ground 4 FOLDER2 Folder swivel detection 5 KBR 4 Key row input 6 KBR 3 Key row input 7 KBR 2 Key row input 8 KBR 1 Key row input 9 KBR 0 Key row input 10 EAR_MIC_K Ear Mic Sending 11 EAR_R_K Stereo Ear Mic Receiving RIGHT ...

Page 34: ... U 18 PWON END KEY INPUT 19 GND Ground 20 2V8_RIO 2 8 V 21 GND GROUND 22 KBC 0 Key Column output 23 KBC 1 Key Column output 24 KBC 2 Key Column output 25 KBC 3 Key Column output 26 KBC 4 Key Column output 27 GND Ground 28 VBAT Battery voltage 29 VBAT Battery voltage 30 GND Ground ...

Page 35: ... 24 5602 040 001 829 LCD Connector CN502 24 5602 026 000 829 Camera Connector U708 SI91841DT 18 LDO 1 8V for Camera U501 LM2750LDX 5 0 Charge pump for Flash LED U402 CIM 80S7B IrDA Module J500 GCA264 6S H27 SIM Connector X 100 MC 146 32KHz Oscillator 3 BASEBAND PART TROUBLE SHOOTING 36 3 BASEBAND PART TROUBLE SHOOTING CN501 U101 X700 U704 U702 CN401 FL700 SW404 U402 J500 X100 U100 U201 BAT100 CN40...

Page 36: ...YMU762 MIDI Chip X200 DSX531X 24MHz X tal U712 NL27WZ32US Decoder U711 NL27WZ32US Decoder U200 USBN9604SLB USB Driver X300 SG 8002CE SC 12 288 12 288MHz X tal U301 TLV320AIC23BGQE Audio Codec U302 TPA2005D1GQYR Speaker Amp CN200 24 8005 502 100 867 Vibrator Connector Table 13 Part description U100 D751992GHH DBB Solution Calypso U201 AM50PDL193CH66I NOR Flash Memory PSRAM BAT100 PB 414SR 12K Backu...

Page 37: ...3123ITP 20 LCD Backlight Drive IC MIC300 OBG415L30 C33 MIC U603 PCA9535BS GPIO Expander X600 FA 238 30MHz 30MHz X tal U602 D17300BLZ120V DSP For Video Processing U600 MIC2211 FMBML LDO 1 5V 2 8V for DSP U601 MIC2211 MFBML LDO 1 5V 2 8V for DSP Camera U709 SKY77325 PAM Q200 NDC652P FET CN500 AXN830535J Board to Board Connector ...

Page 38: ...onents U1 U2 CN1 J1 Figure 23 Key Pad side components Reference Part Description CN1 AXN730535J Board to Board Connector J1 KJA PH 3 0059 Ear Jack U1 A3212ELH Hall Effect Switch For On Off U2 A3212ELH Hall Effect Switch For Reverse Table 14 Part description ...

Page 39: ...ch at PIF UNION Jig off Trouble Shooting Procedure Check Battery Voltage END Key Dome switch condition Check the output voltage of all LDOs 3 5 Charging Trouble Charging method CC CV Charger Detection Voltage over 4 0V Charging Time About 2 5Hours Charging Current 550mA Cut off Current 50mA Low Battery Alarm Talk mode 3 62 0 03 Standby mode 3 50 0 03 Switch Off Voltage Charging Temperature ADC Ran...

Page 40: ...low into the Battery Check Points Connection of TA Charging Current Path Battery Trouble Shooting Setup Connect Battery TA to the handset Trouble Shooting Procedure Block Diagram VCHG GND CN 401 TA IOT A U101 Q200 IC TL R200 PCHG VCCS D200 R201 C212 Batte r y VBAT VBATS FB40 0 FB40 1 VCHG Char gin g C urren t Figure 25 Charging Current Block ...

Page 41: ...00 R201 are well soldered Yes Voltage across R 201 Is about 10 10 0mV Yes Battery is OK Yes Yes Charging is operating properly Resolder the CN401 Pin 4 5 VCHG Pin 12 19 25 26 GND No The TA is out of order Change the TA No Resolder the Q200 D200 R201 Replace the Q200 D200 The Battery may have Problems Change battery No No No ...

Page 42: ...2 V_D 0 V_D 15 Check Points The Assembly status of the LCD Module The Soldering of connector The FPCB which connects the LCD Module Trouble Shooting Setup Connect PIF Jig and Power on Check soldering around connector Main Board LCD Module If the FPCB has a problem the control signals for LCD cannot be transmitted properly Main PCB Figure 26 LCD Module ...

Page 43: ... SHOOTING 44 DSP D17300BLZ120V CN501 FL500 FL501 FL503 FL505 FL506 V_D 0 V_D 15 _WEM V_A 2 _LCD_CS DBB D751992GHH LCD_BL_EN LCD_ID R750 GPIO Expander PCA9535BS R770 R502 LCD_RESET LCD_IFMODE Figure 27 LCD Module Block Diagram ...

Page 44: ...of LCD control signals are OK FPCB is OK Connection between FPCB and LCD Module is OK After changing the board LCD Display is OK LCD Module is out of order Change the LCD Module No Refer to Power On trouble No Reconnect FPCB No Resolder the CN501 No Resolder the R502 R750 R770 FL500 FL501 FL503 FL505 FL506 No Replace the FPCB No Resolder the connector of LCD Module No The board is broken Change th...

Page 45: ... TPA2005D1GQYR makes the mixed input signal to differential amplified audio signal These signals are finally delivered to speaker through the camera connector and receiver through the LCD connector Signal to Receiver RCV_P RCV_N from ABB IOTA RCV_P RCV_N are delivered to Receiver in LCD module through LCD connector Receiver Trouble shooting setup Initialize GSM MS Test equipment Connect PIF UNION ...

Page 46: ...ART TROUBLE SHOOTING 47 Trouble shooting Procedure Check the audio signal level at each points Check the soldering of the connector Check the soldering of the receiver R822 R823 CN501 RCV_N RCV_P Figure 29 Receiver ...

Page 47: ...plies Check the sound path Check the sound level to the speaker Check the speaker and the soldering YES NO YES NO YES NO START Set audio part at test equipment as PBRS or continuous wave not echo Set the audio volume Max Does sine wave appear at R822 R823 Connection between FPCB and board is OK Soldering of CN501 and Receiver is OK FPCB is out of order Change the FPCB ABB is out of order Change th...

Page 48: ...3 BASEBAND PART TROUBLE SHOOTING 49 U302 R341 R340 R333 R335 R334 C306 C315 U707 TP303 TP304 U300 U301 CN502 VA502 VA503 Figure 30 Speaker ...

Page 49: ...5 U300 is out of order Change the Board U707 is out of order Change the Board Enter into engineering mode and go to menu Baseband alert ring YES NO Does sine wave appears at R333 R333 R334 C332 are out of order Change the R333 R334 C332 YES NO Does sine wave appears at R340 R341 U302 is out of order Change the Board YES NO Connection between FPCB and board is OK Reconnect FPCB FPCB is out of order...

Page 50: ...hone Signal Flow MIC is enabled by MICBIAS MICBIAS is supplied from ABB IOTA MICP MICN signal to ABB IOTA Check Points Microphone bias level Audio signal level of the microphone Soldering of components Figure 31 Mic Circuit MICP MICN L301 R331 R328 L302 Figure 32 Mic ...

Page 51: ...measured ABB is out of order Change the board Y N Y N START Connect the handset to network equipment and setup call Check the signal level at MICP MICN after putting audio signal The MIC is out of order Change the Mic The soldering of R331 R328 C323 C324 L301 L302 is OK Resolder the R331 R328 C323 C324 L301 and L302 Resolder R329 N Y Y N Figure 33 Earphone Circuit ...

Page 52: ...xternal audio codec and it makes stereo type audio output signal This stereo type output is delivered to the receiver through U707 analog switch IC START No Yes Go to Earphone Detect Problem Make a call and insert the earphone into headset Does the audio profile change to the earphone mode Can you hear the sound from the earphone Set the menu of test equipment to PBRS or continuous wave mode Does ...

Page 53: ... Resolder J1 and Try again Change the Earphone A few tens or hundreds of mV of signals at C107 are measured The ABB is out of order Change the Board Yes The voltage level at ADIN4 is below 1 3V S W Re download and try again If the result is same change the board No Earphone Detect Problem Yes The soldering of R302 is OK No Resolder R302 Yes The soldering of CN500 is OK Yes The soldering of J1 is O...

Page 54: ...3 BASEBAND PART TROUBLE SHOOTING 55 CN500 J1 L500 L501 L502 C108 R300 C107 R302 U300 R301 Figure 34 Earphone path ...

Page 55: ...brator is enabled Check Points VDD lines of MIDI Chip Vibrator signal path The connection between the main board and vibrator connector The soldering of components The vibrator Trouble Shooting Setup Connect PIF UNION Jig to the phone and Power on Block Diagram YMU762 U300 R218 VIBRATOR VBAT VBAT CN200 R219 L200 MOTOR U204 Figure 35 Vibrator Circuit ...

Page 56: ... to board connector Check vibrator Vibrator Trouble CN200 U204 L200 R219 R218 Figure 36 Vibrator Path START CN200 is soldered well No Resolder the CN200 Yes Signal path is OK No Resolder the R218 R219 U204 L200 Yes Rectangular wave 0 7V appears at pin3 of U204 No Change the U204 U204 is broken Enter into Engineering Mode and select Vibrator Vibrator is out of order Change the Vibrator Yes ...

Page 57: ...EDs are forward biased and turned on Check Points LEDB signal LEDs Trouble Shooting Setup Connect PIF UNION Jig to the phone and Power on Enter Engineering mode Go to menu Baseband Backlight Keypad on Trouble Shooting Procedure Check the soldering of components Check the LEDB signal Check LEDs Check LED signal R27 R28 Check soldering Figure 37 Keypad Backlight ...

Page 58: ...Yes Replace the LED It is out of order No Enter into Engineering Mode and select Keypad On The Voltage of LED signal is about 0V Is there anything that resistor value across LED Keypad Display is OK Power off and Measure the Resistor Value of all LEDs Resolder the path START No Yes Enter into Engineering Mode and select Keypad On The path is OK The LED is out of order Change the LED ...

Page 59: ...HOOTING 60 3 12 Folder On Off and Trouble Block Diagram Folder On Off Block Diagram Folder Reverse DBB CALYPSO U100 Folder2 Component Side Keypad Side DBB CALYPSO U100 Folder1 Component Side Keypad Side Figure 38 Folder on off ...

Page 60: ...d to DBB and the status of folder is reported Folder Operation Normal Reverse There is a magnet to detect the folder status normal mode or reverse mode If a magnet is close to the hall effect switch U2 the voltage at pin 2 of U2 goes to 0V Otherwise 2 8V This Folder2 signal is delivered to DBB and the status of folder is reported U1 U2 Figure 39 Folder Operation Folder1 Signal Status L Close Magne...

Page 61: ...broken Change theboard Resolder the R29 No Refer to Power On Trouble No Replace the U1 U1 is broken Folder1 signal is low on magnetizing into U1 No Yes Yes Yes START The all paths connected to U2 are OK The 2V8_RIO is 2 8V TheDBB Calypso is broken Change the board Resolder the R30 No Refer to Power On Trouble No Replace the U2 U2 isbroken Folder2 signal is low on magnetizing into U2 ...

Page 62: ...IM Detect Trouble Block Diagram SIM_IO SIM_CLK SIM_RST SIM_PWRCTRL SIM_CD DBB U100 ABB U101 VRSIM DBBSIO DBBSCK DBBSRST S IMCLK SIMIO SIMRST SIM J500 VPP CLK IO RST 2V8 RIO C523 C505 R111 R112 DSP_INT V SIM C526 R500 R114 Figure 40 SIM Circuits ...

Page 63: ...g to the phone and Power on Trouble Shooting Procedure Check the power supply Check the soldering of SIM socket Check the SIM Pin1 Pin3 Pin4 Pin6 Figure 41 SIM Socket START No Yes Resolder the J500 No Resolder the R500 Yes The SIM Card is OK No SIM card is broken Change the SIM Card Yes The soldering of SIM connector is OK The ABB IOTA is broken Change the board The all paths connected to J500 are...

Page 64: ...nd C_PCLK Camera serial communication is I2C Check Points Check the power supply Check the soldering of Components Check the FLASH_EN signals Check the CAMERA signals Trouble Shooting Setup Enter the engineering mode Go to menu Baseband Camera Figure 43 Camera Connector Block Diagram GPIO DSP D751992GHH Camera SXGA C_PCLK C_Vsync C_Hsync I2C 1 8V 2 8V YUV0_7 USBN 9604SBL C_MCLK Figure 42 Camera Bl...

Page 65: ... U601 2V8_CAM NO C_MCLK waveform Go to the LCD NO NO Check CN502 soldering Change the camera module NO Change U708 Camera module is out of order NO U200 is outof order Change theU200 YES NO Change U601 YES YES YES Check the C_PCLK Check the C_VSYNC Check the C_HSYNC flat cable of camera module YES X200 U200 X200 is outof order Change theX200 Resolder CN502 YES YES NO NO YES ...

Page 66: ..._DX is Low_signal which come by FLASH_EN DBB The LEDs are forward biased and turned on Check Points Signal FLASH_EN LED Power Source VBAT 2V8_CAM Trouble Shooting Setup Connect PIF UNION to the phone and power on Go to menu Camera Flash On Block Diagram DBB LM2750 LDX_5 0 _SD FLASH_EN R506 R508 R509 R507 U501 R800 FLASH_EN C524 Figure 44 Camera Flash Path ...

Page 67: ...le START DBB is out of order Change the Board The voltage of U501 is about 4 5V U501 is out of order Change the U501 LED is out of order Change the LED High signal Appear at the R800 YES NO YES Press VOD key Set Camera on And then turn flash on at Menu NO ...

Page 68: ...eck the soldering of Components Check the IrDA Transceiver Trouble Shooting Setup Enter the engineering mode Go to menu Baseband IrDA Test Trouble Shooting Procedure Check the SD TX RX signal Check the soldering Check the IrDA Transceiver Block Diagram IrDA UART IrDA DBB CALYPSO VBAT 2V8_RIO RX_IrDA SD_IrDA TX_IrDA R416 Figure 45 IrDA Block Diagram Figure 46 IrDA Tx_IrDA Rx_IrDA SD_IrDA R416 2V8_R...

Page 69: ...llumination Cone 30 Cm START Resolder the R416 Change the U402 The soldering of U402 is OK Resolder the U402 The power is supplied to U402 The DBB is broken Change the board The signal TX_IrD A R X_ IrD A are measured Execute PCSync program YES YES YES NO NO NO ...

Page 70: ...OTING U702 U703 U709 FL700 SW404 U704 X700 Figure 47 RF Components Reference Description Referencen Description SW404 Mobile S W U704 LDO Voltage Regulator FL700 FEM Front End Module X700 VCTCXO 26MHz U703 Triple Buffer U709 PAM U702 RF Main Chip Table 15 RF Components ...

Page 71: ...4 RF PART TROUBLESHOOTING 72 4 2 Trouble Shooting of Receiver Part Figure 48 RF ...

Page 72: ...cuit Figure 49 LDO Figure 50 LDO Circuit Figure 51 LDO Waveform Pin5 Replace U704 U100 is out of order change the board Checking Points Checking Flow Yes No Yes No U704 Pin 3 RF_EN Pin 5 RF2 85V LDO Circuit Diagram Waveform Redownload The phone S W Pin3 ...

Page 73: ...e waveform of Pin3 similar to Fig 54 VCTCXO Circuit is OK Replace X700 Yes Is the waveform of Pin 47 similar to Fig 55 Replace U702 Yes No No Waveform VCTCXO Circuit Diagram Pin 3 X700 Pin 47 Figure 52 VCTCXO Figure 53 VCTCXO Circuit Figure 54 VCTCXO Waveform Figure 55 VCTCXO Buffer Out Waveform ...

Page 74: ...ing Points Similar Fig58 Control Signals is OK See next page to check Checking Flow Wavefrom Yes Control Signal Circuit Diagram STROBE CLK DATA DATA CLK STROB No Redownload The phone S W U702 Figure 56 RF Chipset Figure 58 RF Chipset Control Signal Figure 57 RF Chipset Circuit ...

Page 75: ...4 RF PART TROUBLESHOOTING 76 4 2 4 Checking Mobile S W and FEM Circuit VC1 VC3 VC2 Pin1 Pin2 Checking Points Mobile S W FEM Circuit Diagram Figure 59 FEM Figure 60 FEM Circuit ...

Page 76: ... to the next stage Pin1 67dBm Pin3 67dBm Change FL700 For this RF level test case Rx Stand alone mode is needed Check Pin 1 2 of SW404 with RF Cable Open Replace SW404 Redownload The Phone S W Yes No No Checking Flow On the just one line of the balanced Signal Line VC1 Low VC2 Low VC3 Low Yes Yes Yes No ...

Page 77: ...4 2 5 Checking Rx IQ Circuit Similar Fig63 Checking Points Checking Flow Replace U702 Rx IQ Circuit Wavefrom RXQN RXQP RXIP RXIN Yes No Rx IQ is OK Rx IQ data U702 Figure 61 RX I Q Figure 62 RX I Q Circuit Figure 63 RX I Q Waveform ...

Page 78: ... Figure 64 PAM Setup Test Equipment GSM900 62CH 5 Level DCS1800 700CH 0 Level Check point LDO Check point VCTCXO Check point RF Chipset Control Signal Check point TX IQ Check point Mobile S W FEM Checking Flow Checking Points Re download the phone S W Check point PAM ...

Page 79: ...SHOOTING 80 4 3 1 Checking LDO Circuit See RX Part Check LDO Circuit 4 3 2 Checking VCTCXO circuits See RX Part Check VCTCXO Circuit 4 3 3 Checking RF Chipset Control Signals See RX Part Check RF chipset control signal ...

Page 80: ... IQ signals Checking Points Checking Flow Tx IQ Circuit Diagram Waveform Similar Fig67 Replace U702 TXQN TXQP TXIP TXIN Yes No Tx IQ is OK Go to the next stage U702 Figure 65 TX I Q Fig 36 Tx Burst Figure 66 TX I Q Circuit Figure 67 TX I Q Waveform ...

Page 81: ... GSM Out Similar Fig 69 Tx IQ signals are OK Go to the next stage Checking Flow Redownload The Phone S W Tx PAM Circuit Diagram Waveform DCS Out Yes No GSM Out 33dBm DCS Out 30dBm Yes U709 is out of order change U709 No U709 Figure 68 PAM Circuit Figure 69 PAM Control Signal ...

Page 82: ...Check RF Level of FEM Output FL700 13 FEM is OK Redownload The Phone S W Change FL700 For this RF level test case Rx Stand alone mode is needed Check Pin 1 2 of SW404 with RF Cable Open Replace SW404 GSM VC1 High VC2 Low VC3 Low Checking Flow DCS VC1 Low VC2 High VC3 High EGSM 33dBm DCS 30dBm Yes Yes Yes No No No ...

Page 83: ...5 DISASSEMBLY INSTRUCTION 84 5 1 Disassembly 5 DISASSEMBLY INSTRUCTION 1 2 ...

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Page 98: ...use data kit you should have a battery with the voltage above 3 7V 6 1 2 In case of using the PIF Preparation Target Handset T5100 PIF RS 232 Cable and PIF to Phone interface Cable TA Power Supply or Battery IBM compatible PC supporting RS 232 with Windows 98 or newer If you use battery you should have a battery with the voltage above 3 7V 6 Download Figure 6 1 Describes Download Setup ...

Page 99: ...6 2 Download Procedure 1 Execute Fluid_GUI exe and select Erase Program flash menu 6 Download 100 ...

Page 100: ...6 Download 101 2 Click the Add button Then choose m0 file which is going to download ...

Page 101: ...or current target s m0 file you must erase entire flash memory The second programming option is to decide whether you erase bootloader It is recommended not to erase bootloader The third is to decide whether you take delta download or not If you use delta download You can save download time through comparing m0 and flash block and not downloading flash block same with m0 file 6 Download 102 ...

Page 102: ...6 Download 103 4 Press Global Settings menu Choose a correct serial port and set the configuration as below ...

Page 103: ... Click Erase Program button If you click Erase Program button you will be able to see that reset target is displayed in the Output window And then if you push shortly the Power key of the mobile downloading will be started 6 Download 104 ...

Page 104: ...6 Download 105 6 Wait for downloading to be finished ...

Page 105: ...tch on the mobile first time after downloading you must not remove the battery until switch on procedure is completed If you remove the battery before switch on procedure is completed we will not be able to save user data in the flash memory of the mobile 6 Download 106 ...

Page 106: ...es DSP file system corrupted T5100 Multimedia Chip Download START Turn on the Power of Phone Connect to Computer using USB Interface Cable Excute T5100 manager program Yes NW NW NW Yes Yes 3 DSP Boot Download success 1 USB Check is OK 5 Sticker Downlad success Reconnect phone 2 DSP Format Reconnect phone Reconnect phone 6 Reboot Phone 4 Reboot Phone ...

Page 107: ...1 Execute T5100_Manager exe and Click 1 USB Check button 2 Click 2 DSP Format button You should not power off the phone before completing the step 3 It makes DSP file system corrupted 6 Download 108 ...

Page 108: ...6 Download 109 3 Click the 3 DSP Boot Download button Then choose bin file which is going to be download ...

Page 109: ...progress bar while DSP Boot bin file is Downloading 5 Click 4 Reboot Phone button after downloading This step is just to inform you that you should reboot phone This step does not make rebooting process automatically 6 Download 110 ...

Page 110: ...6 Download 111 5 Click 5 Sticker Download button Then choose bin file which is going to be download ...

Page 111: ... progress bar while Sticker bin file is Downloading 7 Click 6 Reboot Phone button after downloading This step is just to inform you that you should reboot phone This step does not make rebooting process automatically 6 Download 112 ...

Page 112: ...ed where slide you want there are some files extracted in that slide Start Setup exe in Service software setup slide RampTable dat default transmit ramping table and rf_original_L300 epm default calibration data are located in window system slide so that these files are loaded automatically if you execute LaputaService exe 7 1 4 Common Properties of Service Software When you execute this program y...

Page 113: ...fined ARFCNs within Rx band 4 ARFCNs are for GSM and others for DCS Clicking arrow button to change number you can see TCH and BCH ARFCN changed automatically PM window displays the power level measured in baseband chip PM value is useful to calculate the received absolute power The unit of PM is dBd PM Start You can measure Rx power that target received from test equipment When you click this but...

Page 114: ...ng label of Test button is changed to Stop If you want stop transmitting click this button one more D RF Parameter Download Frame Saving epm file into Flash When you have a epm file contains calibrated data and you want to download into target Flash check Flash and click File Download button Then you can see RF parameters Save window Select epm file you want to save into Flash then click Open Duri...

Page 115: ... also enables writing the default parameters on the Flash in which case all calibration steps should be carried out The service software can Øt control the equipment so only manual calibration process is possible 7 2 2 Equipment List Equipment for Calibration Type Model Brand Wireless Communication Test Set HP 8960 HP8922 CMU200 any other call equipment RS 232 Cable and Test JIG RF Cable Power Sup...

Page 116: ...nent antenna connector is 74dBm In channel compensation the channel numbers in Rx band are E GSM band 0 40 124 975 and 1023 DCS band 512 574 636 700 760 822 and 885 Procedure a Initialize phone by clicking Initialize button b Set the GSM test equipment CW mode and BCH and TCH of GSM test equipment 0 same with phone c Set the power of GSM test equipment 74dBm d Click the PM Start button then the va...

Page 117: ...ecute after measuring the PM B TX Calibration In order for the Tx power to be within the GSM specifications for each Tx level some calibration is necessary In total four calibrations are required per transmit band power calibration channel compensation temperature compensation and low voltage compensation Of these temperature compensation and low voltage compensation are not needed in replacement ...

Page 118: ...N with this value For each power level adjust the DAC value to get target power and click Test button Then you can see the output power displayed on test equipment c Saving updated calibration data into phone by clicking Calib Saving button Power Level GSM DCS 0 29 1 28 2 26 3 24 4 22 5 32 20 6 31 18 7 29 16 8 27 14 9 25 12 10 23 10 11 21 8 12 19 6 13 17 4 14 15 2 15 13 0 16 11 17 9 18 7 19 5 Tabl...

Page 119: ...ch LED Number Name Description LED 1 POWER Power is provided for test JIG LED 2 TA Indicate charging state of the phone battery with travel charger LED 3 MON STATUS Indicate date transfer state through the UART IrDA LED 4 UART STATUS Indicate date transfer state through the UART MODEM JIG LED Operation 1 Connect the RS232 serial cable between COM port of notebook and MON port of test JIG in genera...

Page 120: ... 121 8 CIRCUIT DIAGRAM 8 1 RF Interface ...

Page 121: ... 122 2 3 8 2 Base Band Interface ...

Page 122: ...UT_A2 I NOUT_A3 3 4 I NOUT_A4 9 I NOUT_B1 I NOUT_B2 8 7 I NOUT_B3 I NOUT_B4 6 I NOUT_B3 7 6 I NOUT_B4 1 I NOUT_A1 I NOUT_A2 2 3 I NOUT_A3 I NOUT_A4 4 I NOUT_B1 9 8 I NOUT_B2 1 I NOUT_A1 I NOUT_A2 2 3 I NOUT_A3 I NOUT_A4 4 I NOUT_B1 9 8 I NOUT_B2 I NOUT_B3 7 6 I NOUT_B4 8 3 LCD Connector Camera Connector Keypad Connector ...

Page 123: ... 124 2 2 300mA 12 8 150mA 4 11 12 6 3 150mA 3 5 10 7 9 300mA 4 N9 NC23 8 4 DSP ...

Page 124: ... 125 Fe r r i t e be a d BLM18PG121SN1D 8 5 Memory Interface USB interface ...

Page 125: ... 126 8 6 MIDI Audio ...

Page 126: ... 127 8 7 I O Receptacle USB Interface IrDa Interface D G S ...

Page 127: ... 128 8 8 Keypad VA3 VA2 VA1 ...

Page 128: ... 129 9 PCB LAYOUT 9 1 Main Top ...

Page 129: ... 130 9 2 Main Bottom ...

Page 130: ... 131 9 3 Keypad Top ...

Page 131: ... 132 9 4 Keypad Bottom ...

Page 132: ...st menu 1 All Auto test 2 Baseband test 2 1 Backlight 2 1 1 Main Lcd Off 2 1 2 Keypad Off 2 2 LCD 2 2 1 LCD Auto 2 2 2 65K LCD Test 2 3 Camera 2 3 1 Preview 2 3 2 Settings 2 3 3 DSP Up set 2 3 4 Frame Up set 2 4 Font 2 4 1 Font8 X 16 2 4 2 Font8 X 16i 2 4 3 Font8 X 18 2 4 4 Font8 X 18i 2 4 5 Font8 X 18b 2 4 6 INFORMAL_Font8 X 18 2 4 7 Font10 X 9 2 4 8 Font13 X 20 2 5 Alert 2 5 1 Vibrator 2 5 2 Rin...

Page 133: ... Echo Control 2 8 3 Loud Speaker 2 8 3 1 Voice 2 8 3 1 1 Link Volume 2 8 3 1 2 Sidetone 2 8 3 2 Keytone 2 8 3 1 1 Link Volume 2 8 3 1 2 Sidetone 2 8 3 3 Echo Control 2 8 4 HANDSFREE 2 8 4 1 Voice 2 8 4 1 1 Link Volume 2 8 4 1 2 Sidetone 2 8 4 2 Keytone 2 8 4 1 1 Link Volume 2 8 4 1 2 Sidetone 2 8 4 3 Echo Control 2 9 Irda Test 3 S W Version 3 1 T5100 Vers 3 2 DSP Version 4 Eng Mode 4 1 Cell Enviro...

Page 134: ...APC a Select either Power level or DAC value b Power level Input appropriate value GSM between 5 19 or DCS between 0 15 c DAC value You may adjust directly the power level with DAC values 11 1 3 Rx Test 1 Selecting Channel Select one of GSM or DCS Band and input appropriate channel 2 Automatic Gain Control and Instrument Power level See if the value of RSSI is close to 60dBm when setting the value...

Page 135: ... 136 12 EXPLODED VIEW REPLACEMENT PART LIST 12 1 EXPLODED VIEW ...

Page 136: ... 137 12 1 EXPLODED VIEW ...

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Summary of Contents for T5100

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LG T5100, Service Manual, Page: 53 / 136

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Summary of Contents for T5100

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