LG KP260 Service Manual Download Page 79

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4. TROUBLE SHOOTING

4.16 RTC Trouble

LGE Internal Use Only

Only for training and service purposes

TEST POINT

CIRCUIT

X100

TP1

MC-146_12_5PFX100

32.768KHz

C121

C124
9p

R107

10M

Figure 4.15

TP1

Summary of Contents for KP260

Page 1: ...Service Manual Model KP260 265 Service Manual KP260 265 Date August 2008 Issue 1 0 Internal Use Only ...

Page 2: ...0 4 8 LCD Trouble 62 4 9 Camera Trouble 65 4 10 Speaker Trouble 68 4 11 SIM Card Interface Trouble 70 4 12 Earphone Trouble 72 4 13 KEY backlight Trouble 74 4 14 Receiver Trouble 76 4 15 Microphone Trouble 78 4 16 RTC Trouble 80 4 17 Slide open close Trouble 82 4 18 Micro SD Trouble 84 5 DOWNLOAD 86 5 1 Download 86 6 BLOCK DIAGRAM 92 7 CIRCUIT DIAGRAM 93 8 BGA IC Pin Check 101 9 PCB LAYOUT 105 10 ...

Page 4: ...nauthorized 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 ma...

Page 5: ...d 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 whic...

Page 6: ...al to Analog Converter DCS Digital Communication System dBm dB relative to 1 milli watt DSP Digital Signal Processing EEPROM Electrical Erasable Programmable Read Only Memory ESD Electrostatic Discharge FPCB Flexible Printed Circuit Board GMSK Gaussian Minimum Shift Keying GPIB General Purpose Interface Bus GSM Global System for Mobile Communications IPUI International Portable User Identity IF In...

Page 7: ... RLR Receiving Loudness Rating RMS Root Mean Square RTC Real Time Clock SAW Surface Acoustic Wave SIM Subscriber Identity Module SLR Sending Loudness Rating SRAM Static Random Access Memory PSRAM Pseudo SRAM STMR Side Tone Masking Rating TA Travel Adapter TDD Time Division Duplex TDMA Time Division Multiple Access UART Universal Asynchronous Receiver Transmitter VCO Voltage Controlled Oscillator V...

Page 8: ...TX output power GSM850 GSM900 32 5dBm Level 5 DCS PCS 29 5dBm Level 0 GPRS compatibility Class 10 SIM card type 3V Display MAIN TFT 128 x 160 pixel 262K Color Hard icons Key Pad Status Indicator 0 9 Up Down Left Right Ok Navigation Key Menu Key Clear Key Confirm Key Send Key PWR Key Volume Key Camera Hot Key ANT Internal EAR Phone Jack Yes Stereo PC Synchronization Yes Speech coding EFR FR HR Data...

Page 9: ...z n 512 885 PCS1900 TX 1810 n 512 x 0 2 MHz RX 1905 n 512 x 0 2 MHz n 512 885 2 Phase Error RMS 5 degrees Peak 20 degrees 3 Frequency Error 0 1 ppm GSM850 EGSM900 Level Power Toler Level Power Toler 5 33 dBm 2dB 13 17 dBm 3dB 6 31 dBm 3dB 14 15 dBm 3dB 7 29 dBm 3dB 15 13 dBm 3dB 8 27 dBm 3dB 16 11 dBm 5dB 9 25 dBm 3dB 17 9 dBm 5dB 10 23 dBm 3dB 18 7 dBm 5dB 11 21 dBm 3dB 19 5 dBm 5dB 4 Power Level...

Page 10: ...M900 Offset from Carrier kHz Max dBc 100 0 5 200 30 250 33 400 60 600 1 200 60 1 200 1 800 60 1 800 3 000 63 3 000 6 000 65 7 Output RF Spectrum 6 000 71 due to modulation DCS1800 PCS1900 Offset from Carrier kHz Max dBc 100 0 5 200 30 250 33 400 60 600 1 200 60 1 200 1 800 60 1 800 3 000 65 3 000 6 000 65 6 000 73 GSM850 EGSM900 Offset from Carrier kHz Max dBm Output RF Spectrum 400 19 8 due to sw...

Page 11: ...800 27 9 Spurious Emissions Conduction Emission Status Radiation Emission Status GSM850 EGSM900 10 Bit Error Ratio BER Class II 2 439 102dBm DCS1800 PCS1900 BER Class II 2 439 102dBm 11 RX Level Report Accuracy 2 3 dB 12 SLR 8 3 dB Frequency Hz Max dB Min dB 100 12 200 0 300 0 12 13 Sending Response 1 000 0 6 2 000 4 6 3 000 4 6 3 400 4 9 4 000 0 14 RLR 4 3 dB Frequency Hz Max dB Min dB 100 6 7 20...

Page 12: ...tooth on Standby 300mA Bluetooth connected Call FM radio 40mA FM Radio Operation AVG Backup Battery Without Main Battery Normal Power Off 5uA Emergency Power Off 15uA 4 hr Min GSM850 ESGSM900 PL 5 21 Talk Time 6 hr Min GSM850 EGSM900 PL 12 4 5 hr Min DCS PCS PL 0 7 hr Min DCS PCS PL 10 400 hr Min PP9 350 hr Min PP5 22 Standby Time Full charge no receive send and keep GSM in idle mode Broadcast set...

Page 13: ...Number Power 5 92 dBm 4 100 dBm 93 dBm 26 Antenna Display 3 skip 2 103 dBm 101 dBm 1 105 dBm 104 dBm 0 105 dBm Battery Bar Number Voltage 1 0 3 42V 0 05V 27 Battery Indicator 2 1 3 55V 0 05 V 3 2 3 7V 0 05 V 3 4 2V 28 Low Voltage Warning TBD 3 42 0 05 V Call 3 42 0 05 V Standby 29 Forced shut down Voltage 3 33 0 05V 30 Battery Type Main Battery Li ion 900mAh Inner Pack Back up Battery Lithium 1mAh...

Page 14: ... for 50 Ω input and output impedances and a Power Amplifier Control PAC block with an internal current sense resistor The custom BiCMOS integrated circuit provides the internal PAC function and interface circuitry Fabricated onto a single Gallium Arsenide GaAs die one Heterojunction Bipolar Transistor HBT PA block supports the GSM bands and the other supports the DCS1800 and PCS1900 bands Both PA ...

Page 15: ...ernal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF 16 Table 3 1 Pad description Figure 3 2 Pad configuration Top view and case marking ...

Page 16: ...0 17 3 TECHNICAL BRIEF LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Table 3 2 Mode Control logic ANT_SW1 ANT_SW2 GSM850_EGSM TX H H DCS_PCS TX L H GSM850 RX H L EGSM900 RX H L DCS1800 RX L L PCS1900 RX L L ...

Page 17: ...th 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 filters prior to the PA The AD6548 uses a single integrated LO VCO for both the receive and the transmit c...

Page 18: ...ut 19 REFIN Crystal Connection 4 VCC_BBI Baseband I TX path supply IP 20 REFINB Crystal Connection 5 SDATA Serial port data 21 REF_OP Reference Frequency Output 6 SCLK Serial port clock 22 QB Q baseband input output 7 SEN Serial port enable 23 Q Q baseband input output 8 N C Not connected 24 VCC_BBQ Baseband Q supply IP 9 VLDO3 TX LDO Output 1 25 RX1900B PCS 1900 LNA input 10 TXOP_LO Transmit O P ...

Page 19: ... circuitry to oscillate the crystal and tune its frequency is fully integrated The Oscillator is a balanced implementation requiring the crystal to be connected across 2 pins There is a programmable capacitor array included for coarse tuning of fixed offsets e g crystal manufacturing tolerance and an integrated varactor for dynamic control The oscillator is designed for use with a 26MHz crystal De...

Page 20: ...rates EDR to 3Mbits s It includes an integrated FM receiver with stereo audio output stage and an RDS demodulator With the on chip CSR Bluetooth software stack it provides a fully compliant Bluetooth system to v2 1 EDR of the specification for data and voice communications LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 21: ...ull Rate and Half Rate Speech Encoding Decoding Capable of Supporting AMR PDC Speech Algorithms 3 Peripheral Functions Parallel and Serial Display Interface USB 2 0 Full Speed device Interface Keypad Interface Support for Burst and Page Mode Flash 1 8V and 3 0V 64 kbps SIM Interface Universal System Connector Interface Data Services Interface SD Multimedia Card Interface 4 Other Supports 13 MHz an...

Page 22: ... 23 3 TECHNICAL BRIEF LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Figure 3 5 SYSTEM INTERCONECTION OF AD6726 EXTERNAL INTERFACE ...

Page 23: ...IT716 controls the LCD module through nLCD_CS nLCD_RS nLCD_WR L_DATA07 L_DATA00 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Signals Description nLCD_CS MAIN LCD driver chip enable MAIN LCD driver IC has own CS pin LCD_ID Identify LCD module maker LCD_RESET This pin resets LCD module This signal comes from AD6726 directly nLCD_WR...

Page 24: ...EN S_EN S_DATA S_CLK Signals Description MLED Current source for backlight LED LCD_DIM_CTRL Control LCD backlight level in 16 steps MLED 1 4 This pins are returned paths for backlight LED current source MLED Table 3 5 B2 DESCRIPTION OF LCD BACKLIGHT LED CONTROL Signals Description PA_BAND GPIO 0 PAM Band Select ANT_SW1 GPO 9 Antenna switch Band Select ANT_SW2 GPO 10 Antenna switch Band Select PA_E...

Page 25: ...w Table 3 5 in detail LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Signals Description SIM_DATA This pin receives and sends data to SIM card This model can support 3 0 volt and 1 8 volt interface SIM card SIM_CLK Clock 3 25MHz frequency SIM_RST Reset SIM block GPIO_23 Table 3 5 D SIM CONTROL SIGNALS DESCRIPTION Figure 3 5 D2 SIM ...

Page 26: ...nal memory on the digital baseband processor 2 8V 150mA 2V8_VEXT supplies Radio digital interface and high voltage interface 2 8V 200mA 2V85_VSIM supplies the SIM interface circuitry on the digital processor and SIM card 2 85V 1 8V 20mA 1V8_VRTC supplies the Real Time Clock module 1 8 V 20 µA 2V5_VMIC supplies the microphone interface circuitry 2 5 V 2 mA 2V75_VVCXO supplies the voltage controlled...

Page 27: ...nd service purposes Properties Spec Unit Active Screen Size 28 032mm W x 35 04mm H mm Color Depth 262K TFT colors Resolution 128 X 160 Pixels 4 INOUT_A4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3 INOUT_B4 6 FL300 ICVE10184E150R101FR G1 5 G2 10 INOUT_A1 1 2 INOUT_A2 INOUT_A3 3 2 3 INOUT_A3 INOUT_A4 4 INOUT_B1 9 8 INOUT_B2 INOUT_B3 7 6 INOUT_B4 ICVE10184E150R101FR FL301 5 G1 10 G2 1 INOUT_A1 INOUT_A2 1 2 INOU...

Page 28: ...32 33 25 3 4 5 6 7 8 9 26 35 36 37 38 39 40 41 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24 CN302 1 1u C333 VBAT C349 39p 39p C348 C345 39p 47p C336 2V5_VMIC SPK_MICP REC_N UKEY_ROW3 POWERKEY KEY_COL4 LCD_RESET VBACKUP UKEY_ROW2 UKEY_ROW1 MLED1 F_DATA07 F_nLCD_WR F_DATA00 MLED2 MLED SPK_MICN REC_P F_VSYNCOUT F_nLCD_RS UKEY_ROW4 F_DATA01 LED_BC F_DATA02 F_DATA03 F_DATA04 F_DATA05 KEY_COL3 F_nLCD_...

Page 29: ...vice purposes 3 8 Camera Interface AIT716 U400 This model has a built in 1 3M SXGA 1280 x 1024 camera module And the camera produces JPG pictures Camera module is controlled by AIT716 Interface is done by I2C and YCbCr format I2C is a control signal and YCbCr is real data interface signal Figure 3 7 1 AIT716 BLOCK DIAGRAM ...

Page 31: ...K7 PMCLK A6 PPXL_CLK K1 PRST_ B1 PSCAN_EN A4 PHD7 E2 E3 PHD8 B6 PHINT F3 PHLCD2_CS_ PHLCD_A0 F2 PHLCD_BY F1 PHRD_ C2 PHSYNC G2 G1 PHWAIT_ PHWE_ B3 E10 PI2S_MCLK F9 PI2S_SCK F8 PI2S_SDO PI2S_WS F10 PLCD0 K3 PLCD1 J9 D10 PGPIO2 D9 PGPIO3 PGPIO4 D8 C8 PGPIO5 PGPIO6 C9 C10 PGPIO7 PGPIO8 C7 B8 PGPIO9 C1 PHCS_ PHD0 B5 PHD1 D1 PHD2 D2 C3 PHD3 D3 PHD4 D4 PHD5 PHD6 E1 PD3 H1 H2 PD4 C5 PD5 PD6 H3 G5 PD7 PD8...

Page 32: ... are connected together causing the row input to go low and generate an interrupt The columns rows are then scanned by AD6726 to identify the pressed key LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Figure 3 8 Keypad Switches and Scanning 7 2 4 8 5 1 9 6 0 3 KEY208 CN201 1 2 3 varistor VA206 SHARP VA211 R211 680 680 R229 KEY209 C...

Page 33: ...8 LG Electronics Inc All right reserved Only for training and service purposes R303 47 C301 10u C309 47p MIC300 1 2 OBE 415L42 RC10 LGB10 VA300 ICVN0505X150FR 47p C308 47 R306 ICVN0505X150FR VA301 DNI C305 2 2K R301 2V5_VMIC 1K R300 0 1uF C300 R307 2 2K MAIN_MICN MAIN_MICP MODE L H H SPKPH_EN L MICROPHONE PATH SELECTION Replace EUSY0323001 L H Don t Use L H SPEAKER PHONE MODE MIC_PATH_SEL HANDSET ...

Page 34: ...DET AUXOP_R REC_P REC_N AUXOP_L Single end strero MIC Input AIT AIT_UART_TX 0 1uF C416 R407 12K 10u C417 C415 0 1uF DNI R406 A3 PUSBDN PUSBDP A2 PVIN_N H10 G10 PVIN_P H9 PVREF_N PVREF_P H8 PLCD1_CS_ PLCD2_CS_ PLCD_A0 PLCD_RD_ PGPIO11 B10 PGPIO12 B7 A10 PGPIO13 A7 PGPIO14 PGPIO15 A9 NC2 G9 MM_MICP FM_R FM_L MM_R MM_L MM_USBDM MM_USBDP 39p C234 1 2 CN200 VA200 ICVN0505X150FR C233 39p ICVN0505X150FR ...

Page 35: ... high to low This is detected by ACC_DETECT of AD6726 And then hook is detected LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF 36 Figure 3 11 HEADSET JACK INTERFACE 0 1u C318 27p C324 2V5_VMIC C323 27p R314 2 2K R316 20 C325 10u C330 100p C322 0 1u R312 1 5K HS_MIC AUXIN AUXIP ACC_DET ENRY0006801 R305 100K 3 4 5 6...

Page 36: ...LEDs in Main Board and 4 LEDs in Upper board which are controlled by KEY_BACKLIGHT1 and KEY_BACKLIGHT3 each on AD6726 Figure 3 12 KEY BACK LIGHT ILLUMINTION EDLH0013403 WHITE KEY BACKLIGHT LD201 VBAT LD200 75 R220 VA207 DNI VA208 DNI R219 75 LED_A UPPER_KEY_BACKLIGHT Not Mount Not Mount ICVN0505X150FR VA105 LD100 LD102 75 R113 LD103 75 R111 varistor VA106 LD101 R114 75 VBAT 75 R112 75 R116 LD105 R...

Page 37: ...R416 100K 14 FBA 7 FBB 20 GND 18 4 IN1 6 IN2 8 LDOA LDOB 3 OUT 11 PGND 5 THER_GND 21 AAT2845IML EE T1 U404 12 C1_M 13 C1_P C2_M 9 10 C2_P CBP 19 D1 2 1 D2 D3 17 16 D4 ENLDO 15 EN_SET C427 27p R424 62K 0 1u 1V8_CAMCORE C420 C432 2 2u R423 0 C428 R422 0 27p 2V8_AVDD C429 10u 27p C431 160K R419 VBAT 1 5K R418 1u FB400 C433 1u C430 1u 1V8_CAMIO C425 C426 1u FB401 100K R421 120K R420 R425 120K CAM_PWR_...

Page 38: ...ogram the TA charge current during the constant current mode IUSB Program the USB charge current during the constant current mode _EN Enable logic input BAT Charger output pin USB_BYP Output pin from USB bypass circuitry VDC_BYP Output Pin of Linear Regulator TA Travel Adaptor Input voltage AC 100V 250V 63Hz Output voltage DC 5 6V Output current Max 400mA Battery Li ion battery Max 4 2V Nom 3 7V S...

Page 39: ... Inc All right reserved Only for training and service purposes TEST POINT 40 4 TROUBLE SHOOTING 4 TROUBLE SHOOTING 4 1 RF Component FL500 U502 U501 X500 Figure 4 1 U501 PAM SKY77318 U502 AD6548 RF Main Chip Transceiver X500 Crystal 26MHz Clock FL500 FEM ...

Page 40: ...oses 4 TROUBLE SHOOTING 41 4 2 RX Trouble START Re download SW or Do calibration again HP8960 Test mode 190 CH 7 level setting TCH 190 CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting 1 Check Crystal Circuit TP1 2 2 Check Mobile SW Rx Saw TP3 4 5 6 3 Check RX I Q Signal TP7 8 CHECKING FLOW ...

Page 41: ...tal Circuit TP1 X401 TP2 26 MHzO K No No Crystal Circuit is OK See next Page to check Mobile SW See next Page to check Mobile SW Yes Change X500 VBAT 2V75_VVCXO 2V8_VMEM 0 1u C522 0 1u C520 Not Mount 2V75_VVCXO R509 0 C513 1000p 2 2u C514 U500 2 GND 3 5 VCC 4 26M_DBB 26M_BT TEST POINT CHECKING FLOW CIRCUIT WAVEFORM Graph 4 2 1 a Graph 4 2 1 b TP1 TP2 ...

Page 42: ... ANT G1 G2 RF 2V75_VVCXO 22p C518 3 4 GSM900_RX2 23 NC1 24 NC2 VC1 19 20 VC2 21 VDD GND1 10 GND2 GND3 12 13 GND4 GND5 14 16 GND6 18 GND7 22 GND8 15 GSM1800_1900_TX GSM1800_RX1 5 6 GSM1800_RX2 GSM1900_RX1 7 8 GSM1900_RX2 GSM850_900_TX 17 GSM850_RX1 1 2 GSM850_RX2 GSM900_RX1 LMSP43QA 538 FL500 ANT 11 9 0 1u C533 ANT_SW2 ANT_SW1 CIRCUIT SW500 TP3 TP4 TP5 TP6 R500 47 27p C507 1K R502 C505 39p 27p C506...

Page 43: ...ted Open Yes Changing SW500 Check SW500 Pin ANT RF with No RF Cable Connected Short Yes Changing SW500 For these 2 test case No Call connection is needed No No Changing the Board Ant SW Mobile SW is OK See next Page to check Rx I Q Signal No For this RF Level test case RX Stand alone Mode is needed refer to chapter 10 Check TP4 5 6 CHECKING FLOW PCS1900 RX ANT_SW1 GSM850_EGSM TX H EGSM900 RX DCS_P...

Page 44: ...VCC_BBI 4 24 VCC_BBQ 1 VCC_FE VCC_REF 17 12 VCC_TXVCO 13 VDD 15 VLDO1 GND 33 I 2 3 IB NC 8 Q 23 22 QB 20 REFIN REFINB 19 REF_OP 21 RX1800 28 27 RX1800B RX1900 26 25 RX1900B RX850 32 31 RX850B AD6548 U502 82p C542 C521 0 1u C519 82p IN IP QP 0 15MM QN TEST POINT CIRCUIT WAVEFORM Redownload software and calibration again Similar No Replace U502 Yes No Check TP7 8 Check if there is any Major differen...

Page 45: ...ining and service purposes START Redownload SW or Do calibration again HP8960 Test mode 190 CH 7 level setting TCH 190 CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting 1 Check Crystal Circuit 3 Check PAM control Signal TP11 12 13 15 16 4 Check TX I Q Signal TP17 18 2 Check Mobile SW FEM TP14 CHECKING FLOW ...

Page 46: ...ice purposes TP1 X401 TP2 26 MHzO K No No Crystal Circuit is OK See next Page to check Mobile SW See next Page to check Mobile SW Yes Change X500 TEST POINT WAVEFORM CIRCUIT CHECKING FLOW Graph 4 2 1 a Graph 4 2 1 b VBAT 2V75_VVCXO 2V8_VMEM 0 1u C522 0 1u C520 Not Mount 2V75_VVCXO R509 0 C513 1000p 2 2u C514 U500 2 GND 3 5 VCC 4 26M_DBB 26M_BT TP1 TP2 ...

Page 47: ...G1 G2 RF 2V75_VVCXO 22p C518 3 4 GSM900_RX2 23 NC1 24 NC2 VC1 19 20 VC2 21 VDD GND1 10 GND2 GND3 12 13 GND4 GND5 14 16 GND6 18 GND7 22 GND8 15 GSM1800_1900_TX GSM1800_RX1 5 6 GSM1800_RX2 GSM1900_RX1 7 8 GSM1900_RX2 GSM850_900_TX 17 GSM850_RX1 1 2 GSM850_RX2 GSM900_RX1 LMSP43QA 538 FL500 ANT 11 9 0 1u C533 ANT_SW2 ANT_SW1 CIRCUIT SW500 TP3 TP4 TP5 TP6 R500 47 27p C507 1K R502 C505 39p 27p C506 R501...

Page 48: ...d Open Yes Changing SW500 Check SW501 Pin ANT RF with No RF Cable Connected Short Yes Changing SW500 For these 2 test case No Call connection is needed No No Changing the Board Ant SW Mobile SW is OK See next Page to check Tx I Q Signal No For this RF Level test case TX Stand alone Mode is needed refer to chapter 10 Check TP12 13 14 CHECKING FLOW PCS1900 RX ANT_SW1 GSM850_EGSM TX H EGSM900 RX DCS_...

Page 49: ...trol Signal U401 TP7 TP8 R500 47 27p C507 1K R502 C505 39p 27p C506 R501 47 TX_RAMP PA_EN PA_BAND TEST POINT CIRCUIT WAVEFORM Similar Yes No Check TP7 8 Any Major Difference or not Similar Yes No Go to Next Step Similar Yes No Re download S W Check if there is Any Major Difference or not Refer to Graph 4 3 3 Graph 4 3 3 Figure 4 3 3 CHECKING FLOW TP7 TP8 ...

Page 50: ... VBAT 14 VCC_BBI 4 24 VCC_BBQ 1 VCC_FE VCC_REF 17 12 VCC_TXVCO 13 VDD 15 VLDO1 GND 33 I 2 3 IB NC 8 Q 23 22 QB 20 REFIN REFINB 19 REF_OP 21 RX1800 28 27 RX1800B RX1900 26 25 RX1900B RX850 32 31 RX850B AD6548 U502 82p C542 C521 0 1u C519 82p IN IP QP 0 15MM QN TEST POINT WAVEFORM CIRCUIT Re download the Software And calibrate Check if there is Any Major Difference Refer to Graph4 3 4 Similar Yes No...

Page 51: ...ADS G8 C10 VSS_PIO D2 VSS_RADIO_1 E2 VSS_RADIO_2 VSS_RADIO_3 F2 K2 XTAL_IN XTAL_OUT J2 F8 _RST VREGENABLE_H H3 VREGENABLE_L VREGIN_H J5 J1 VREGIN_L VREGOUT_H K5 VSS_ANA_1 C3 VSS_ANA_2 D3 VSS_ANA_3 E3 VSS_ANA_4 F3 VSS_ANA_5 G3 VSS_ANA_6 J3 VSS_CORE B6 G9 VSS_DIG VSS_FM1_1 B2 C1 VSS_FM1_2 VSS_FM2 B4 VSS_LO H5 UART_RX K7 UART_TX J8 K6 USB_DN USB_DP J7 VDD_ANA K1 A6 VDD_AUDIO VDD_CORE_1 A7 H10 VDD_COR...

Page 52: ...r training and service purposes Check Bias Voltage 2V8_BT at TP1 START NO YES Replace U203 BT_MAIN_CLK_EN check at TP2 NO Replace U200 YES 26MHz check at TP3 YES NO Replace X500 _BT_RST check at TP4 YES NO Replace U103 Bluetooth on is OK YES NO Re download SW and try again Bluetooth will work properly CHECKING FLOW ...

Page 53: ...on is good START Check of ear_jack condition NO YES YES FM_radio will work properly Check condition of matching components L300 C307 A condition is good NO YES Give the additory solder in L300 C307 Replace CN300 Check Bias Voltage 2V8_BT at TP1 YES NO Replace U203 Check BT_32k at TP5 YES NO Replace U103 FM_Radio work is good NO Replace U200 CHECKING FLOW ...

Page 54: ...30 1u 2V8_VMEM R113 3300 27p C132 2V8_VEXT 1V8_VRTC R111 0 C133 1u 2V75_VVCXO 100K R109 1V8_VCORE C131 1u C127 VUSB 1u 1V8_VGP T19 VUSB_A VMEMFB W13 VMEMOUT V12 U12 VMEMSEL VMIC U19 VRF M19 W15 VRTC T11 VRTCSEL V14 VSIM_A VEXT_REG1 V11 VEXT_REG2 W11 VGP W14 V8 VCORE W8 VCOREOUT N18 VABB_LDO VAPP P18 L14 VAPPCFG VAPPGATE N19 E19 PMTSEL T13 PWREN V17 PWRON V5 RESET J8 J9 RESET1P8 K9 RESET2P8 MCLK V7...

Page 55: ...02 Logic level at RPWRON of U102 TP10 HIGH above 1 2V Is the phone power on The phone will Properly operating Charge or Change Battery Check the contact of power key Or dome switch Re download software 1V8_VCORE 1 8V TP1 2V75_VVCXO 2 75V TP8 2V8_VMEM 2 8V TP9 2V85_VSIM 2 85V TP4 2V8_VEXT 2 8V TP3 1V8_VRTC 1 8V TP2 2V5_VMIC 2 5V TP7 Replace U102 Does it work properly Replace the main board YES YES ...

Page 56: ...rposes 4 6 Charging Trouble CN300 TP1 TP2 U304 EUSY0351601 CHARGE TA USB C353 1u VCHG_IN VBAT R340 18K OVP_VCHG OVP_VUSB 10K R339 R338 15K VDC_BYP VUSB 2 4 _CHG 5 _EN _PPR 3 ISL9221 U304 BAT 11 8 GND 6 IMIN 7 IUSB 9 IVDC PGND 13 USB_BYP 10 1 VDC 12 VBUS_IN 100K R336 C352 1u C354 1u _CHG_EN TEST POINT CIRCUIT Figure 4 5 TP2 TP3 TP1 ...

Page 57: ...00 well soldered Voltage at anode of TP1 4 6 6 4V Is Voltage across TP2 LOW YES YES YES Battery is charged YES Charging is properly operating NO NO NO NO Resolder the CN300 Pin 12 13 VCHARGE The TA is out of work Change the TA 1 Download S W again 2 Replace the 304 Replace the main board Battery is charged NO Change the battery Charging is properly operating YES CHECKING FLOW ...

Page 58: ... I O Connector CN300 well soldered Voltage at anode of TP1 5V Is Voltage across TP2 LOW YES YES YES Battery is charged YES Charging is properly operating NO NO NO NO Resolder the CN300 Pin 15 VBUS Power on PC 1 Download S W again 2 Replace the U304 Replace the main board Battery is charged NO Change the battery Charging is properly operating YES CHECKING FLOW ...

Page 59: ...Only for training and service purposes 4 TROUBLE SHOOTING 60 4 7 Vibrator Trouble TP1 TP2 TP3 Q300 TEST POINT VIBRATOR 1608 10 R317 Q1_B 2 Q1_C 6 Q1_E 1 5 Q2_B 3 Q2_C 4 Q2_E Q300 VBAT 27p C331 100nH L301 L302 100nH 4 7u C339 1 2 VB300 VIBRATOR TEST POINT Figure 4 6 TP1 TP3 TP2 ...

Page 60: ... BB test menu START Is the voltage at TP1 high 0 66V YES NO Is the voltage at TP2 equal to VBAT YES Is the voltage at TP3 high VBAT YES Check the soldering of vibrator YES Replace vibrator YES Vibrator Working well Check the U103 Output soldering NO Check the soldering Of Q300 If overall current is abnormal replace Main Board NO Check the soldering of 311 L301 Q200 Resolder or Replace vibrator NO ...

Page 61: ... 62 4 TROUBLE SHOOTING LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 8 LCD Trouble TP1 CN100 CN302 FPCB TEST POINT Figure 4 8 ...

Page 62: ... 39p C344 DNI C343 2V8_MM C334 47p VA304 R322 680 680 R321 C335 1u 34 42 43 44 27 45 46 47 48 49 50 28 29 30 31 32 33 25 3 4 5 6 7 8 9 26 35 36 37 38 39 40 41 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24 CN302 1 1u C333 VBAT C349 39p 39p C348 C345 39p 47p C336 2V5_VMIC SPK_MICP REC_N UKEY_ROW3 POWERKEY KEY_COL4 LCD_RESET VBACKUP UKEY_ROW2 UKEY_ROW1 MLED1 F_DATA07 F_nLCD_WR F_DATA00 MLED2 MLED SP...

Page 63: ...Is Voltage TP1 2 8V NO Replace U403 Check the soldering of CN302 on Main PCB or CN100 on KEY PCB NO Change the FPCB and try again YES YES YES Check the soldering of EMI filter Resolder CN302 on Main PCB or CN100 on KEY PCB NO Resoldering EMI filter FL300 FL301 FL302 Does LCD work properly NO Replace LCD module YES LCD working well YES Is the connection of LCD with connector on KEY PCB CN100 ok NO ...

Page 64: ...E Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 65 4 9 Camera Trouble TEST POINT FL400 FL401 FL402 TP3 TP1 TP2 Figure 4 8 ...

Page 65: ...M_L MM_R MM_L L_DATA02 L_DATA03 L_DATA04 L_DATA05 L_DATA06 L_DATA07 C_PCLK_OUT _MULTI_RST CAM_PWR_EN MM_USBDM MM_USBDP C_VS_OUT _MAIN_CS _MULTI_INT C_CD00_OUT C_CD01_OUT C_CD02_OUT C_CD03_OUT C_CD04_OUT C_CD05_OUT C_CD06_OUT C_CD07_OUT C_MCLK TF_CLK DATA00 DATA01 DATA02 DATA03 DATA04 DATA05 DATA06 DATA07 ADD01 LCD_BYPASS C_HS_OUT _WR L_DATA00 L_DATA01 4 INOUT_B1 9 8 INOUT_B2 INOUT_B3 7 6 INOUT_B4 ...

Page 66: ...O Change the camera module Does it work properly YES Itís camera moduleís problem Replace the camera module Check the voltage of TP1 is 2 8V and Voltage of TP2 of U404 is 1 8V YES Check the signals of the FL400 FL401 FL402 YES Camera will work properly NO NO Go to the LCD trouble Replace FL400 FL401 FL402 NO Is the voltage at TP3 high NO Replace U400 YES Replace U404 CHECKING FLOW ...

Page 67: ...P EUSY0360201 1u C208 C218 1u 27p C221 C207 1u 1u C202 D4 B4 RXIN SCL C3 SDA B3 B1 VDD A3 VSS B2 BIAS C1N A4 C1P A5 D3 GND HPL A2 HPR A1 INA1 D2 INA2 D1 C2 INB1 C1 INB2 OUT D5 B5 OUT C4 PGND C5 PVDD RXIN MAX9877AEWP_TG45 IC200 1u C209 1u C213 1u C206 27p C222 1u C201 1u C214 1u C212 C203 C225 1u 1u VBAT C200 1u SPK_N SPK_P ABB_P AUXOP_L AUXOP_R MM_L FM_L FM_R MM_R I2C_SCL I2C_SDA HS_OUT_L HS_OUT_R...

Page 68: ...TROUBLE SHOOTING 69 START Check TP1 to make sure the connection between speaker and board Speaker Working well Check TP2 to see the audio signal No Yes Change the U102 Connect well the Speaker connector No Check TP3 is VBAT No Yes Change the main board Yes Is speaker properly working No Change U200 Yes CHECKING FLOW ...

Page 69: ...aining and service purposes 4 TROUBLE SHOOTING 70 4 11 SIM Card Interface Trouble TP2 J300 TP1 TEST POINT SIM_CLK SIM_RST CLK GND 4 7 GND1 GND2 8 6 I_O RST 2 VCC 1 5 VPP J300 3 15K R313 220n C327 2V85_VSIM 1000p C329 0 R315 DNI C326 C328 DNI 2V85_VSIM SIM_DATA CIRCUIT Figure 4 11 TP2 TP1 ...

Page 70: ...nge the SIM Card This phone supports 3V or 1 8V SIM card YES Is Voltage at the TP1 of J200 2 85V NO Change the U103 NO YES Resolder J300 YES Voltage output of VSIM LDO Is 2 85V CHECK TP2 Change the SIM Card And try again Does it work Properly YES SIM card is properly working Redownload SW Does it work Properly NO Change the main board NO YES SIM card is properly working CHECKING FLOW ...

Page 71: ...320 VBUS_IN C314 18p 100K R302 FB303 1u C317 2V8_VEXT HS_OUT_R HS_OUT_L HS_MIC JACK_DETECT USC1 DSR USBDP USBDM RPWRON USC2 Figure 4 12 Figure 4 11 C534 0 1u C318 27p C324 2V5_VMIC C323 27p R314 2 2K R316 20 C325 10u C330 100p C322 0 1u R312 1 5K HS_MIC AUXIN AUXIP ACC_DET AUDIO AMP EUSY0360201 1u C208 C218 1u C207 1u D4 B4 RXIN SCL C3 SDA B3 B1 VDD A3 VSS B2 BIAS C1N A4 C1P A5 D3 GND INA1 D2 INA2...

Page 72: ...audio part of the test Equipment to echo mode Change the earphone and try again NO Can you hear the sound from the earphone Set the audio part of the test equipment to PRBS or Continuous wave mode YES YES ResolderCN300 Check TP1 voltage Is it low Resolder TP2 NO YES Can you hear the sound from the earphone NO Change the earphone and try again NO Can you hear your voice from the earphone NO Resolde...

Page 73: ...cs Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 74 4 13 KEY backlight Trouble TEST POINT CIRCUIT TP1 LD200 LD201 TP2 EDLH0013403 WHITE KEY BACKLIGHT LD201 VBAT LD200 75 R220 VA207 DNI VA208 DNI R219 75 LED_A TP1 TP2 ...

Page 74: ...s the level Period at TP1 Low Duty 70 START Is the level Period at TP1 High Duty 30 NO Check U103 YES Are all LEDs Working NO YES Check the soldering each LED Backlight will work properly NO Replace or resolder component NO Check U103 YES Are all LEDs off YES NO Is LD200 off Is LD201 off NO Resolder TP1 Resolder TP2 YES YES CHECKING FLOW ...

Page 75: ...405 DNI C343 47p VA304 R322 680 680 R321 1u 34 42 43 44 45 46 47 48 49 50 30 31 32 33 3 4 5 6 7 8 9 35 36 37 38 39 40 41 10 11 12 13 14 15 16 17 18 19 2 20 21 CN302 1 1u C349 39p 39p C348 47p REC_N KEY_COL4 LCD_RESET MLED1 MLED2 MLED REC_P UKEY_ROW4 KEY_COL3 UKEY_ROW0 LCD_ID RECEIVER DNI DNI VA101 VA100 CN101 1 2 L100 1800 39p C103 L101 1800 39p C102 C101 39p REC_P REC_N Figure 4 13 TP1 TP2 ...

Page 76: ...te NO Change the U103 YES Receiver will work properly SETTING After initialize Agilent 8960 Test GSM900 DCS PCS mode Set the property of audio as PRBS or continuous wave Set the receiving volume of mobile as Max Check TP2 to make sure the receiver connected Properly YES NO Resolder Change the receiver Does waveform at TP2 fluctuate NO YES NO Change the FPCB CHECKING FLOW ...

Page 77: ... 13 NO_A0 15 NO_B0 3 NO_C0 7 11 NO_D0 2 SAB SCD 10 14 VCC U301 NLAST9431MT 16 COM_A 4 COM_B 8 COM_C 12 COM_D 6 1u C302 100K R311 C310 1u C304 0 1uF 2V8_VEXT 1u C312 0 1uF C311 R310 100K MAIN_MICP SPK_MICP SPK_MICN MAIN_MICN MM_MICP VINNORP VINNORN MIC_PATH_SEL SPKPH_EN R303 47 C301 10u C309 47p MIC300 1 2 OBE 415L42 RC10 LGB10 VA300 ICVN0505X150FR 47p C308 47 R306 ICVN0505X150FR VA301 DNI C305 2 2...

Page 78: ...DCS PCS mode YES Check the signal Level at TP2 of MIC300 Is it a few tens mV AC Check the soldering of TP6 Make a phone call then check TP1 mic bias signal comes from U103 NO Change the microphone YES NO Resolder component Change the U103 Check microphone sound hole Does waveform at TP3 fluctuate NO Resolder component YES Does waveform at TP4 fluctuate NO Are the TP5 LOW NO Change the U103 YES Cha...

Page 79: ...RTC Trouble LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes TEST POINT CIRCUIT X100 TP1 1 2 3 4 MC 146_12_5PFX100 32 768KHz C121 9p C124 9p R107 10M Figure 4 15 TP1 ...

Page 80: ...nly for training and service purposes RTC will work properly Is frequency at TP1 about 32 768KHz START Resolder the X100 or change the X100 NO YES YES Is voltage at TP1 about 400mV Resolder the X100 or change the X100 NO Is RTC properly working NO Re download software and try again YES CHECKING FLOW ...

Page 81: ...2008 LG Electronics Inc All right reserved Only for training and service purposes 4 17 Slide open close Trouble TEST POINT CIRCUIT U300 TP1 TP2 EUSY0362601 0 1u C303 BU52031NVX U300 2 GND 3 NC 1 OUT 5 PGND VDD 4 2V8_VMEM C306 0 1u SLIDE Figure 4 17 TP1 TP2 ...

Page 82: ... purposes Folder on off will work properly Is there the magnet in the Folder START Replace U103 Place the magnet properly NO Voltage atTP1 of U300 2 8V YES NO Voltage of VMEM at U103 2 8V NO Resolder U300 YES Open Folder Voltage at TP2 2 8V Resolder U300 NO YES Close folder Voltage atTP2 0V YES Replace U300 NO YES CHECKING FLOW ...

Page 83: ... Figure 4 18 U303 TP1 TP2 ENSY0014701 u SD CARD EUSY0290701 U303 BGND 6 GND 2 SEL 5 1 STBY VIN 3 4 VOUT BH28PB1WHFV 56K R331 2V85_TF 56K R333 VBAT 100K R337 0 R334 100K R328 2V8_VEXT C350 1u C356 1u R332 56K 2V85_TF 56K R330 7 8 SWA SWB S300 49225 0821 GND GND 1 2 3 4 5 6 C351 4 7u 2V85_TF DNI C355 R329 56K TF_DET TF_DATA1 TF_DATA0 TF_CLK TF_CMD TF_DATA3 TF_DATA2 TFLASH_EN TP2 TP1 ...

Page 84: ...reserved Only for training and service purposes Micro SD Card will work properly Micro SD Detect OK START Change Micro SD or Replace S300 NO YES TP2 Is High NO YES Check out T_CLK Data Timing OK Re download SW NO YES YES Replace Micro SD Card Check TP1 2 85V YES NO Change U303 CHECKING FLOW ...

Page 85: ...se Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 5 DOWNLOAD 5 1 Download A Download Setup Figure 5 1 describes Download setup Figure 5 1 Download Setup 5 DOWNLOAD 86 ...

Page 86: ...DOWNLOAD LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes B Multi Download Procedure 1 Run GSM Multi Download program and select Setting KP265 ...

Page 87: ...ight 2008 LG Electronics Inc All right reserved Only for training and service purposes 88 2 Select Configuration from the menu and you may see this window 3 Press key to select DLL file and press Open 5 DOWNLOAD KP265_080315 dll ...

Page 88: ... Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 89 5 DOWNLOAD 4 Press key to select the mot files 5 Select AlchemyData mot and press open 6 Repeat step 4 5 to select CodeData mot ...

Page 89: ... Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 90 7 Check if the ADI option is set to Hermes 8 Press OK to end Configuration 5 DOWNLOAD Select Rate KP265 KP265 ...

Page 90: ...Electronics Inc All right reserved Only for training and service purposes 91 5 DOWNLOAD 9 Press START to execute download 10 Once downloading is started press STOP button to keep from re downloading after downloading is completed KP265 KP265 ...

Page 91: ...LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 92 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM Figure 6 1 LG KP235 Block Diagram ...

Page 92: ...TA5 B19 DATA6 B18 DATA7 C17 DATA8 C16 C15 DATA9 E4 DATA_CLK_GPO_21 DBBON V6 DCS_SW_DRV_GPO_9 B3 B2 DCS_SW_SYNG_GPO_8 DGND V9 DMINUS A7 DPLUS A8 D2 DTH_DATA_GPO_20 D3 DTH_EN_GPO_18 DTH_VLO_EN_GPO_19 E3 J15 GATEDRIVE CSDI_ABB R9 K11 CSDI_DBB CSDO_ABB K12 U9 CSFS_ABB T9 CSFS_DBB D15 DATA0 D17 DATA1 B14 DATA10 B15 DATA11 B17 DATA12 B16 DATA13 A14 DATA14 A15 DATA15 DATA2 D16 C19 DATA3 C18 DATA4 BSDO_AB...

Page 93: ...218 680 C210 ICVN0505X150FR VA201 2 2u 22n C217 C215 15p 270nH L204 L201 NA 680 R223 R225 2V8_VEXT 680 R221 0 C236 DNI R209 680 680 R212 C203 C225 1u 1u 15p C235 VBAT C231 1 5p C200 1u R228 680 C204 0 1u 2V8_BT KEY205 FB200 H2 VSS_PADS G8 C10 VSS_PIO D2 VSS_RADIO_1 E2 VSS_RADIO_2 VSS_RADIO_3 F2 K2 XTAL_IN XTAL_OUT J2 F8 _RST VREGENABLE_H H3 VREGENABLE_L VREGIN_H J5 J1 VREGIN_L VREGOUT_H K5 VSS_ANA...

Page 94: ...I C305 2 2K R301 R318 100K R316 20 VDC_BYP VUSB 2 4 _CHG 5 _EN _PPR 3 ISL9221 U304 BAT 11 8 GND 6 IMIN 7 IUSB 9 IVDC PGND 13 USB_BYP 10 1 VDC 12 22 R320 VBUS_IN 2 3 INOUT_A3 INOUT_A4 4 INOUT_B1 9 8 INOUT_B2 INOUT_B3 7 6 INOUT_B4 ICVE10184E150R101FR FL301 5 G1 10 G2 1 INOUT_A1 INOUT_A2 C346 DNI C325 R332 56K 10u C304 0 1uF C314 18p 4 7u C339 VBUS_IN R322 680 10K R323 C330 1 2 INOUT_A2 INOUT_A3 3 4 ...

Page 95: ...14 DNI DNI R406 120K R420 VDD_IO0 E4 F5 VDD_IO1 J8 VDD_IO2 VDD_IO3 A1 VDD_IO4 E7 VDD_IO5 D7 B4 VDD_PLL A5 VSS_PLL K2 PSCK PSDA J2 PSEN J1 PTEST_EN A8 A3 PUSBDN PUSBDP A2 PVIN_N H10 G10 PVIN_P H9 PVREF_N PVREF_P H8 PVSYNC G3 VDD_CLK C4 E5 VDD_CORE0 G6 VDD_CORE1 E6 VDD_CORE2 F4 VDD_CORE3 K10 PLCD1_CS_ PLCD2 H6 PLCD2_CS_ K9 J10 PLCD3 PLCD4 J6 PLCD5 K4 J5 PLCD6 K6 PLCD7 PLCD8 K5 J7 PLCD_A0 K8 PLCD_RD_...

Page 96: ...NC VBAT 14 VCC_BBI 4 24 VCC_BBQ 1 VCC_FE VCC_REF 17 12 VCC_TXVCO 13 VDD 15 VLDO1 GND 33 I 2 3 IB NC 8 Q 23 22 QB 20 REFIN REFINB 19 REF_OP 21 RX1800 28 27 RX1800B RX1900 26 25 RX1900B RX850 32 31 RX850B 6 2nH AD6548 U502 20 VAPC VBATT 17 VCC1A 2 VCC1B 6 L503 3 DCS_PCS_IN DCS_PCS_OUT 15 EGSM_IN 4 EGSM_OUT 11 18 ENABLE 5 GND1 GND2 7 GND3 8 9 GND4 GND5 10 12 GND6 GND7 13 14 GND8 16 GND9 P_GND 21 RSVD...

Page 97: ... 16 17 18 19 2 20 21 22 23 24 25 26 27 28 CN100 1 10 11 12 13 39p C109 L100 1800 LD100 R103 20K SEL 1K R101 39p C103 DNI C107 LD102 47 R105 ICVN0505X150FR VA104 LEFT 75 R113 R106 L101 1800 2 2K DNI VA102 DNI C108 C111 47p C110 47p 39p C102 C101 LD103 39p BAT100 2V8_MM R109 DNI 75 R111 END varistor VA106 LD101 1 2 CLR SPOB 413S42 RC3310BC MIC100 MENU 47 R104 R114 75 VBAT R107 100K OJ101 2 2K R102 2...

Page 98: ...3 34 35 36 37 38 39 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 VBAT FPCB_EDGE_CONN ECN100 1 2V8_MM TP 2V8_MM UKEY_ROW2 UKEY_ROW3 KEY_COL3 KEY_COL4 UKEY_ROW0 UKEY_ROW4 REC_P REC_N POWERKEY VBACKUP LED_BC SPK_MICN F_DATA00 F_DATA01 F_DATA02 F_DATA03 F_DATA04 F_DATA05 F_DATA06 F_DATA07 F_VSYNCOUT F_nLCD_CS F_nLCD_WR F_nLCD_RS MLED MLED2 UKEY_ROW1 SPK_MICP SPK_MICN F_nLCD_WR F_nLCD_CS F_DATA00 F_DATA...

Page 100: ...LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 101 8 BGA IC Pin Check 8 BGA IC Pin Check And Not use U103 AD6726 EUSY0364401 Top View ...

Page 103: ...LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 104 8 BGA IC Pin Check Not use NC Pin U200 SMZY0015801 BLUECORE5 FM ...

Page 104: ... Charge Pump No LCD backlight No Camera U304 Charging IC No charging U200 BT FM BT Connection FM radio No Service FL200 Balun Filter BT Tx Rx No Service U203 BT LDO BT FM mode No BT FM Radio CN302 Slide Conn No Display No Receiver No Mic for Spk phone No Multi Key U302 USB Analog S W No USB LD200 LD201 LED No KEY backlight MIC300 MIC No MIC ...

Page 105: ...No Boot No Power on No Service Reset Q300 Vibrator Tr No Vibrator U303 T flash LDO No T flash U501 PAM GSM Tx Power No Service FL500 FEM GSM Rx Sensitivity Tx Power No Service U502 Transceiver GSM Rx Sensitivity Tx Power No Service IC200 Audio Amp No SPK No MP3 U403 MM LDO No U400 U100 Memory No Boot U402 USB LDO No USB ANT200 BT Antenna BT Tx Rx No Service CN200 SPK Conn No Speaker CN301 Battery ...

Page 106: ... 107 7 CIRCUIT DIAGRAM LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes MIC100 MIC No MIC for SPK phone LD100 104 No KEY backlight ...

Page 107: ...al Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ECN100 FPCB Conn No Display No Receiver No Mic for Spk phone No Multi Key CN100 LCD Conn No Display BAT100 Backup Battery RTC Reset ...

Page 108: ... 109 7 CIRCUIT DIAGRAM LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes CN403 No Display No Receiver No Mic for Spk phone No Multi Key ...

Page 110: ...2945 Pressing END will switch back to non engineering mode operation C Key Operation Use Up and Down key to select a menu and press select key to progress the test Pressing back key will switch back to the original test menu D Engineering Mode Menu Tree 10 ENGINEERING MODE Engineering Mode MF mode ELT Mode Version Factory Reset Eng Mode All Auto Test Main LCD LCD Backlight Key Backlight Speaker Vi...

Page 111: ... RED GREEN BLUE BLACK 2 Grey 16 level from black to white 10 1 3 LCD Backlight This menu is to test the LCD Backlight 1 Backlight on LCD Backlight on 2 Backlight off LCD Backlight off 10 1 4 Key Backlight This menu is to test the KEY Backlight 1 On KEY Backlight on 2 Off Key Backlight off 10 1 5 Speaker This menu is to test the melody sound 1 Melody on Melody sound is played through the speaker 2 ...

Page 112: ...ys software version stored in the phone 10 4 Factory Reset MENU 4 This Factory Reset menu is to format data block in the flash memory and this procedure set up the default value in data block Attention 1 Fact Reset i e Factory Reset should be only used during the Manufacturing process 2 Servicemen should NOT progress this menu otherwise some of valuable data such as Setting value RF Calibration da...

Page 113: ...to view and tune the audio parameter 0x0000 0xFFFF 2 aecCnfg 1 Enable 2 Disable 1 aecCtrl 2 Downlink 4 test table 3 3 test table 2 2 test table 1 1 default table 12 aecTailControlGainTable 0x0000 0xFFFF 11 aecMinLineCouplingFactor 0x0000 0x7FFF 10 aecMinLemCouplingFactor 0x0000 0xFFFF 9 aecDlUlDelay 1 Enable 2 Disable 8 aecEnableComfortNoise 0x0000 0x7FFF 7 aecNlpAttenuation 1 Enable 2 Disable 6 a...

Page 114: ...115 10 ENGINEERING MODE 10 5 5 UART Setting This menu is designed to allow a service man engineer to UART path 1 AUTO 2 Cal Debug 3 AT CMD 4 STATUS 10 5 6 BT Test This menu is to test BT operation 1 Audio Test 2 RF Trst 10 6 Network Info MENU 6 This displays Cell Enviroment 10 6 1 Cell Env Idle 10 6 2 Cell Env Ded ...

Page 115: ...alues as explained below Port select a correct COM port Baud rate 115000 Leave the rest as default values B Tx 1 Selecting Channel Select one of GSM or DCS PCS Band and input appropriate channel 2 Selecting APC a Select either Power level or Scaling Factor b Power level Input appropriate value GSM850 between 5 19 or DCS PCS between 0 15 c Scaling Factor A Ramp Factor appears on the screen You may ...

Page 116: ...nly for training and service purposes 117 11 STAND ALONE TEST 11 3 Means of Test a Select a COM port b Set the values in Tx or Rx c Select band and channel d After setting them all above press connect button e Press the start button Connect Button Figure 11 3 1 HW test program ...

Page 117: ... 118 11 STAND ALONE TEST LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Figure 11 3 3 Ramping profile Figure 11 3 2 HW test setting ...

Page 118: ...rates calibration data by communicating with phone and measuring equipment then write it into calibration data block of flash memory in GSM phone 12 2 Equipment List Figure 11 2 1 Equipment Setup 12 AUTO CALIBRATION Equipment for Calibration Type Model Brand Wireless Communication Test Set HP 8960 Agilent RS 232 Cable and Test JIG LG RF Cable LG Power Supply HP 66311B Agilent GPIO interface card H...

Page 119: ...Jig Power Switch Number Name Description Switch 1 ADI REMOTE In ON state phone is awaked It is used ADI chipset Switch 2 TI REMOTE In ON state phone is awaked It is used TI chipset Switch 3 VBAT Power is provided for phone from battery Switch 4 PS Power is provided for phone from Power supply Table 12 3 Jig DIP Switch LED Number Name Description LED 1 Power Power is provided for Test Jig LED 2 TA ...

Page 120: ...port of PC and MON port of TEST JIG in general 2 Set the Power Supply 4 0V 3 Set the 3rd 4th of DIP SW ON state always 4 Press the Phone power key if the Remote ON is used 1st ON state 12 4 Procedure 1 Connect as Fig 12 2 2 RS232 serial cable is connected between COM port of PC and MON port of TEST JIG in general 2 Run Hot_Kimchi exe to start calibration 3 From the Calibration menu Select KP265 3 ...

Page 122: ...in code and the same measure is performed per every frequency 12 6 APC This procedure is for Tx calibration In this procedure you can get proper scale factor value and measured power level 12 7 ADC This procedure is for battery calibration You can get main Battery Config Table and temperature Config Table will be reset LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only...

Page 124: ...68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 47 46 45 44 43 42 41 33 32 48 83 40 73 39 38 37 36 35 34 31 84 17 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 EXPLODED VIEW LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for ...

Page 126: ...0085701 MOLD PC LUPOY SC 1004A Red 63 4 MDAK00 DECO REAR MDAK0015201 MOLD PC LUPOY SC 1004A Red 67 4 MLAB00 LABEL A S MLAB0001102 C2000 USASV DIA 4 0 White 74 4 MPBH00 PAD MIKE MPBH0038201 COMPLEX empty Without Color 60 4 MPBJ00 PAD MOTOR MPBJ0054101 COMPLEX empty Without Color 61 4 MPBN00 PAD SPEAKER MPBN0056101 COMPLEX empty Without Color 62 4 MPBT00 PAD CAMERA MPBT0057701 COMPLEX empty Without ...

Page 127: ...501 M1 4 2 0 Black 83 5 MDAG00 DECO FRONT MDAG0038201 MOLD POM LUCEL N109 LD Black 31 5 MFBC00 FILTER SPEAKER MFBC0040501 COMPLEX empty Without Color 35 5 MFBD00 FILTER MIKE MFBD0030801 COMPLEX empty Without Color 34 5 MGDA00 GUIDE LEFT MGDA0013701 MOLD POM LUCEL N109 LD Black 32 5 MIDZ00 INSULATOR MIDZ0167601 COMPLEX empty Without Color 46 5 MIDZ01 INSULATOR MIDZ0167701 COMPLEX empty Without Colo...

Page 128: ...ILTER RECEIVER MFBB0026301 COMPLEX empty Without Color 4 5 MPBG00 PAD LCD MPBG0078301 COMPLEX empty Without Color 13 5 MPBH00 PAD MIKE MPBH0038001 COMPLEX empty Without Color 8 5 MPBM00 PAD RECEIVER MPBM0022901 COMPLEX empty Without Color 5 MTAA00 TAPE DECO MTAA0168001 COMPLEX empty Without Color 14 5 MTAB00 TAPE PROTECTION MTAB0256801 COMPLEX empty Without Color 80 5 MTAB01 TAPE PROTECTION MTAB02...

Page 129: ...Z0214201 COMPLEX empty Without Color 77 4 MPBZ01 PAD MPBZ0216601 COMPLEX empty Without Color 84 4 MTAB00 TAPE PROTECTION MTAB0233702 COMPLEX empty Without Color 1 4 MTAZ00 TAPE MTAZ0217101 COMPLEX empty Without Color 17 6 ADCA00 DOME ASSY METAL ADCA0081401 SLIDE Without Color 18 3 GMEY00 SCREW MACHINE BIND GMEY0011201 1 4 mm 3 mm MSWR3 BK N NYLOK Without Color 68 3 MLAK00 LABEL MODEL MLAK0018622 P...

Page 130: ...INDER Reflow type BB Max T 1 67 phi 4 8 Pb Free 7 C100 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 7 C101 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 7 C102 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 7 C103 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 7 C104 CAP CHIP MAKER ECZH0004402 100000 pF 16V Z X7R TC 1005 R TP empty empty empty empty e...

Page 131: ...D100 DIODE LED CHIP EDLH0011901 WHITE 1608 R TP PB FREE ZENER 7 LD101 DIODE LED CHIP EDLH0011901 WHITE 1608 R TP PB FREE ZENER 7 LD102 DIODE LED CHIP EDLH0011901 WHITE 1608 R TP PB FREE ZENER 7 LD103 DIODE LED CHIP EDLH0011901 WHITE 1608 R TP PB FREE ZENER 7 MIC100 MICROPHONE SUMY0010507 UNIT 42 dB 4 1 35 SMD 7 R105 RES CHIP MAKER ERHZ0000483 47 ohm 1 16W J 1005 R TP 7 R106 RES CHIP MAKER ERHZ0000...

Page 132: ...F 6 3V M X5R TC 1608 R TP empty empty empty empty empty empty 0 8 mm 6 C104 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C105 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C106 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C107 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C108 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C109 CAP ...

Page 133: ...HD 1005 R TP 6 C137 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C138 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C139 CAP CERAMIC CHIP ECCH0000122 47 pF 50V J NP0 TC 1005 R TP 6 C140 CAP CERAMIC CHIP ECCH0000115 22 pF 50V J NP0 TC 1005 R TP 6 C141 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C142 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R ...

Page 134: ...P 6 C221 CAP CERAMIC CHIP ECCH0000117 27 pF 50V J NP0 TC 1005 R TP 6 C222 CAP CERAMIC CHIP ECCH0000117 27 pF 50V J NP0 TC 1005 R TP 6 C225 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C233 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C234 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C300 CAP CHIP MAKER ECZH0004402 100000 pF 16V Z X7R TC 1005 R TP empty ...

Page 135: ...MIC CHIP ECCH0000143 1 nF 50V K X7R HD 1005 R TP 6 C330 CAP CHIP MAKER ECZH0000813 100 pF 50V J NP0 TC 1005 R TP 6 C331 CAP CERAMIC CHIP ECCH0000117 27 pF 50V J NP0 TC 1005 R TP 6 C332 CAP TANTAL CHIP ECTH0005203 33 uF 10V M STD 2012 R TP empty empty empty empty empty empty empty 6 C337 CAP CERAMIC CHIP ECCH0000122 47 pF 50V J NP0 TC 1005 R TP 6 C338 CAP CERAMIC CHIP ECCH0000113 18 pF 50V J NP0 TC...

Page 136: ... uF 6 3V K X5R TC 1005 R TP 6 C423 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C424 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C500 CAP CERAMIC CHIP ECCH0000117 27 pF 50V J NP0 TC 1005 R TP 6 C501 CAP CERAMIC CHIP ECCH0000122 47 pF 50V J NP0 TC 1005 R TP 6 C502 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K X7R HD 1005 R TP 6 C503 CAP CERAMIC CHIP ECCH0000393 22000000 pF...

Page 137: ...0115 22 pF 50V J NP0 TC 1005 R TP 6 C533 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C534 CAP CHIP MAKER ECZH0000806 5 pF 50V C NP0 TC 1005 R TP 6 C535 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C536 CAP CERAMIC CHIP ECCH0000185 5 6 pF 50V C NP0 TC 1005 R TP 6 C537 CAP CERAMIC CHIP ECCH0000185 5 6 pF 50V C NP0 TC 1005 R TP 6 C538 CAP CHIP MAKER ECZH0000813 100 pF 50V...

Page 138: ... 2 54 mm H 1 5 6 L204 INDUCTOR CHIP ELCH0010402 270 nH M 1005 R TP CHIP 6 L205 INDUCTOR CHIP ELCH0010402 270 nH M 1005 R TP CHIP 6 L300 INDUCTOR CHIP ELCH0001556 270 nH J 1608 R TP 6 L301 INDUCTOR CHIP ELCH0004727 100 nH J 1005 R TP 6 L302 INDUCTOR CHIP ELCH0004727 100 nH J 1005 R TP 6 L500 INDUCTOR CHIP ELCH0003828 2 4 nH J 1005 R TP MLCI 6 L501 CAP CHIP MAKER ECZH0000813 100 pF 50V J NP0 TC 1005...

Page 139: ...J 1005 R TP 6 R225 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R226 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R227 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R228 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R229 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R300 RES CHIP ERHY0003201 1000 ohm 1 16W F 1005 R TP 6 R301 RES CHIP MAKER ERHZ0000443...

Page 140: ... CHIP ERHY0000275 56K ohm 1 16W J 1005 R TP 6 R333 RES CHIP ERHY0000275 56K ohm 1 16W J 1005 R TP 6 R334 PCB ASSY MAIN PAD SHORT SAFP0000501 6 R337 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R400 RES CHIP MAKER ERHZ0000434 1 ohm 1 16W J 1005 R TP 6 R401 PCB ASSY MAIN PAD SHORT SAFP0000501 6 R402 RES CHIP MAKER ERHZ0000401 0 ohm 1 16W J 1005 R TP 6 R403 RES CHIP MAKER ERHZ0000435 20 oh...

Page 141: ... RES CHIP MAKER ERHZ0000405 10 Kohm 1 16W J 1005 R TP 6 R512 RES CHIP MAKER ERHZ0000429 180 ohm 1 16W J 1005 R TP 6 R513 RES CHIP MAKER ERHZ0000429 180 ohm 1 16W J 1005 R TP 6 S300 CONN SOCKET ENSY0014701 8 PIN ETC 1 1 mm H 1 95 Reverse 6 SW500 CONN RF SWITCH ENWY0004501 SMD dB H 3 6 Straight type 6 U100 IC EUSY0288701 BGA 84 PIN ETC 256 1die flash 64 PSRAM 3V 8x11 6x1 2mm 84ball Pb Free 6 U101 IC...

Page 142: ... R TP 6 C216 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C217 CAP CERAMIC CHIP ECCH0000198 2 2 uF 6 3V M X5R TC 1005 R TP 6 C219 CAP CERAMIC CHIP ECCH0000112 15 pF 50V J NP0 TC 1005 R TP 6 C220 CAP CERAMIC CHIP ECCH0000112 15 pF 50V J NP0 TC 1005 R TP 6 C223 CAP CERAMIC CHIP ECCH0002002 47000 pF 10V K B HD 1005 R TP 6 C224 CAP CHIP MAKER ECZH0001216 220 nF 10V K X5R TC 1005 R TP 6 C...

Page 143: ... CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C345 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C348 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C349 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C352 CAP CHIP MAKER ECZH0001215 1 uF 10V K X5R TC 1005 R TP 6 C353 CAP CHIP MAKER ECZH0001215 1 uF 10V K X5R TC 1005 R TP 6 C354 CAP CERAMIC CHIP ECCH000490...

Page 144: ... V 4ch EMI_ESD Filter 100Ohm 15pF Pb free 6 L202 INDUCTOR CHIP ELCH0004730 33 nH J 1005 R TP 6 L203 INDUCTOR CHIP ELCH0003823 470 nH K 1608 R TP chip coil PBFREE 6 L206 INDUCTOR CHIP ELCH0001413 22 nH J 1005 R TP PBFREE 6 LD200 DIODE LED CHIP EDLH0013403 WHITE ETC R TP 3 8 1 2 0 6T empty 2 9 3 2V 20mA 1200 1400mcd 126mW empty empty 2P 6 LD201 DIODE LED CHIP EDLH0013403 WHITE ETC R TP 3 8 1 2 0 6T ...

Page 145: ...m 1 16W J 1005 R TP 6 R318 RES CHIP MAKER ERHZ0000204 100 Kohm 1 16W F 1005 R TP 6 R319 RES CHIP MAKER ERHZ0000441 22 ohm 1 16W J 1005 R TP 6 R320 RES CHIP MAKER ERHZ0000441 22 ohm 1 16W J 1005 R TP 6 R321 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R322 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R323 RES CHIP MAKER ERHZ0000405 10 Kohm 1 16W J 1005 R TP 6 R324 RES CHIP MAKER...

Page 146: ...hm 1 16W F 1005 R TP 6 R425 RES CHIP MAKER ERHZ0000213 120 Kohm 1 16W F 1005 R TP 6 SPFY PCB MAIN SPFY0181401 FR 4 0 8 mm BUILD UP 8 KP260 MAIN 6 U200 MODULE ETC SMZY0015801 84 Ball 0 5pitch BGA Bluetooth FM 6 0 6 0 1 0 6 U201 IC EUSY0227901 SON5 P 0 35 fSV 5 PIN R TP 2 INPUT AND GATE Pb Free 6 U202 IC EUSY0317101 WQFN 10 PIN R TP 1 8 1 4 0 75 6 U203 IC EUSY0232812 SON1612 6 6 PIN R TP 2 8V 150mA ...

Page 147: ...rpack Europe Label Black 69 3 SGEY00 EAR PHONE EAR MIKE SET SGEY0003719 RMS 20mW 0 56V RMS 16 ohm 2 4 ohm 1KHZ 116dB 3dB 1KHZ 3mW 116dB 1KHZ 96dB 100HZ empty BLACK 18P MMI CONNECTOR Earphone Stereo 3 SSAD00 ADAPTOR AC DC SSAD0028501 100 240V 5060 Hz 5 6 V 0 4 A GOST AC DC Adaptor 150Vac 350Vac 5 6V 0 8V 400mA 5060 WALL 2P I O CONNECTOR ADAPTOR AC DC SSAD0028502 100 240V 5060 Hz 5 6 V 4 A GOST AC D...

Page 148: ...Note ...

Page 149: ...Note ...

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Summary of Contents for KP260

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LG KP260, Service Manual, Page: 79 / 149

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Summary of Contents for KP260

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