LG KP175 Service Manual Download Page 63

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4.9 Speaker Trouble

LGE Internal Use Only

Only for training and service purposes

4. TROUBLE SHOOTING

- 64 -

TEST POINT

CIRCUIT

U201

R204

R207

CN201

SPEAKER

CN201

17-8T-01PP
SUSY0022601

C210

39p

VA203

ICVN0505X150FR

R203

VA204

ICVN0505X150FR

39p

C206

39p

C211

R206

SPK_OUT_N

SPK_OUT_P

Figure 4.9

AUDIO POWER AMP

VBAT

C212

220n

C213
DNI

R208
100K

C207

470n

R202

39K

0.1u

C203

C202

C205

470n

TPA6205A1ZQVR

U201

BYPASS

GND

IN+

IN-

VDD

VO+

VO-

_SHUTDOWN

39K

R209

10K

R207

R204 10K

C201

DNI

SPK_OUT_N

SPK_OUT_P

SPK_P_ABB

SPK_N_ABB

AMP_SHDN

Summary of Contents for KP175

Page 1: ...Service Manual Model KP175 KP170 Service Manual KP175 KP170 Date July 2008 Issue 1 0 Internal Use Only ...

Page 2: ...er Trouble 64 4 10 SIM Card Interface Trouble 66 4 11 Earphone Trouble 68 4 12 KEY backlight Trouble 70 4 13 Receiver Trouble 72 4 14 Microphone Trouble 74 4 15 RTC Trouble 76 4 16 Bluetooth KP175 only 78 4 17 FM Radio KP175 only 80 5 DOWNLOAD 82 5 1 Download 82 6 BLOCK DIAGRAM 88 7 CIRCUIT DIAGRAM 91 8 BGA IC Pin Check 99 9 PCB LAYOUT 103 10 ENGINEERING MODE 105 10 1 MF Mode MENU 1 106 10 2 ELT M...

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: ...S 102dBm TX output power GSM900 32 5dBm Level 5 DCS 29 5dBm Level 0 GPRS compatibility Class 10 SIM card type 3V 1 8V Small Display MAIN TFT 128 x 160 pixel 262K CSTN 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 Hot Key ANT Internal EAR Phone Jack Yes KP175 stereo KP170 mono PC Synchronization Yes Speech coding EFR FR ...

Page 9: ...rror RMS 5 degrees Peak 20 degrees 3 Frequency Error 0 1 ppm GSM900 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 12 19 dBm 3dB DCS Level Power Toler Level Power Toler 0 30 dBm 2dB 8 14 dBm 3dB 1 28 dBm 3dB 9...

Page 10: ... 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 5 Output RF Spectrum 6 000 71 due to modulation DCS 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 Output RF Spectrum 400 19 6 due to switching transient 600 21 1 200 21 1 800 24 ...

Page 11: ...ons Conduction Emission Status GSM900 8 Bit Error Ratio BER Class II 2 439 102 dBm DCS BER Class II 2 439 102 dBm 9 RX Level Report Accuracy 3 dB 10 SLR 8 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 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 ...

Page 12: ...equency 2 5ppm 13 MHz tolerance 19 32 768KHz tolerance 30ppm At least 65 dBspl under below conditions 20 Ringer Volume 1 Ringer set as ringer 2 Test distance set as 50 cm 21 Charge Current Fast Charge 600 mA Slow Charge 120 mA Antenna Bar Number Power 5 92 dBm 4 93dBm 100 dBm 22 Antenna Display 3 Skip 2 101 dBm 103 dBm 1 104 dBm 105 dBm 0 106 dBm Battery Bar Number Voltage 3 3 71 0 05 V 23 Battery...

Page 13: ...y for training and service purposes Item Description Specification 25 Forced shut down Voltage 3 33 0 05V 1 Li ion Battery 26 Battery Type Standard Voltage 3 7 V Battery full charge voltage 4 2 V Capacity 900mAh Switching mode charger 27 Travel Charger Input 100 240 V 50 60 Hz Output 6 6 V 400 mA ...

Page 14: ...s 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 on a multi layer laminate substrate The assembly is encapsulated with plastic overmold Band selection and control of transmit and ...

Page 15: ...e 2 VLOGIC Control logic level selection Standby control 3 VRAMP Analog power control voltage input 4 TX_EN TX RX select mode control 5 BS Band Select mode control 6 DCS_RX DCS Receive RF Output 1805 1880 MHz 7 GSM_RX GSM Receive RF Output 920 960 MHz 8 10 GND RF and DC Ground 11 ANT RF_IN RF_OUT to Antenna 12 16 GND RF and DC Ground 17 GSM_IN RF input 880 915 MHz 18 NC No Connect 19 DCS_IN RF inp...

Page 16: ...ble 3 2 1 Band SW Logic Table Figure 3 2 1 PAM ASM CIRCUIT DIAGRAM Mode VLOGIC Input Control Bits TX_En BS STANDBY 0 X1 X1 GSM_RX 1 0 0 DCS_RX 1 0 1 GSM_TX 1 1 0 DCS_TX 1 1 1 GND2 9 GND3 10 12 GND4 GND5 13 GND6 14 GND7 15 16 GND8 20 GND9 17 GSM_IN GSM_RX 7 18 NC PGND 21 4 TX_EN VBATT 1 2 VLOGIC VRAMP 3 U501 SKY77518 ANT 11 BS 5 19 DCS_IN DCS_RX 6 8 GND1 ...

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: ...e 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 Dedicated control softwa...

Page 20: ...am SRAM Full Rate Enhanced Full Rate and Half Rate Speech Encoding Decoding Capable of Supporting AMR PDC Speech Algorithms 3 Peripheral Functions Parallel and Serial Display Interface Keypad Interface Flash Memory Interface Page Mode Flash Support 1 8V and 3 0V 64 kbps SIM Interface Universal System Connector Interface Data Services Interface Battery Interface e g Dallas 4 Other Supports 13 MHz a...

Page 21: ... 22 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 22: ... Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Signals Description nLCD_MAIN_CS MAIN LCD driver chip enable MAIN LCD driver IC has own CS pin nLCD_RESET This pin resets LCD module This signal comes from AD6726 directly LCD_ID Select LCD module maker 2 4V NEODIS 0V LGIT LCD_RS This pin determines whether the data to LCD module are display data or c...

Page 23: ...g and service purposes Signals Description MLED Current source for backlight LED LCD_BACKLIGHT_CTRL Control LCD backlight level in 16 steps MLED 1 2 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 GPO 3 PAM Band Select ANT_SW GPO 9 Control logic level selection standby control PA_EN GPO 11 Tx Rx Se...

Page 24: ...ble 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 Inte...

Page 25: ...batteries Charger initialization trickle charging and Li Ion charging control are implemented in hardware 2 Over voltage protection It will be automatically disabled when the input voltage is lower than 2 5V or high than 6 5V 3 Charging Process Check charger is inserted or not If MP26021 detects that Charger is inserted the CC CV charging starts Exception When battery voltage is lower than 2 6V th...

Page 26: ...training and service purposes Figure 3 5 F1 CIRCUIT FOR BATTERY CHARGING VCHG_ABB 1u C244 _CHG R238 20K VCHARGE R237 12K C248 1u VBUS_USB USB_VBUS R236 10K C245 1u _PPR C246 1u BAT 11 8 GND 6 IMIN IUSB 7 IVDC 9 13 PGND 10 USB_BYP VDC 1 VDC_BYP 12 2 VUSB _CHG 4 _EN 5 3 _PPR ISL9221 U205 1u C247 VBAT _CHG_EN ...

Page 27: ...mines whether the data to LCD module are display data or control data LCD_WR Write control Signal LCD_RD Read control Signal But this pin used only for debugging L_DATA 00 15 Parallel data lines LCD_ID LCD type selection signals For using 262K color data buses should be 16 bits LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Propert...

Page 28: ...A10 L_DATA11 L_DATA08 L_DATA09 L_DATA06 L_DATA07 L_DATA04 L_DATA05 L_DATA02 L_DATA03 L_DATA00 L_DATA01 L_DATAOUT06 L_DATAOUT07 L_DATAOUT04 L_DATAOUT05 L_DATAOUT00 L_DATAOUT01 L_DATAOUT00 L_DATAOUT01 L_DATAOUT02 L_DATAOUT03 L_DATAOUT04 L_DATAOUT05 L_DATAOUT06 L_DATAOUT07 L_DATAOUT08 L_DATAOUT09 L_DATAOUT10 L_DATAOUT11 L_DATAOUT12 L_DATAOUT13 L_DATAOUT14 L_DATAOUT15 VSYNC L_MAIN_LCD_CS_OUT LCD_WR_OU...

Page 29: ...nterface AIT701G U301 This model has a built in VGA 640 x 480 camera module And the camera produces JPG pictures Camera module is controlled by AIT701G Interface is done by I2C and YCbCr format I2C is a control signal and YCbCr is real data interface signal Figure 3 7 1 AIT701G BLOCK DIAGRAM Figure 3 7 2 SENSOR CHIP BLOCK DIAGRAM ...

Page 30: ... PLCD17 C3 PHD11 H9 G10 PHD12 PHD13 G9 G8 PHD14 F10 PHD15 K4 PHD2 J4 PHD3 PHD4 K5 PHD5 J5 K6 PHD6 J6 PHD7 K10 PHD8 PHD9 J9 J10 PHGPIO_CS_ J8 PHINT K8 PHLCD2_CS_ PD5 C1 PD6 A1 PD7 B1 PDCLK F3 PGPIO0 E9 PGPIO1 D9 C10 PGPIO2 PGPIO3 B9 PGPIO4 A7 PGPIO5 B7 PGPIO6 F9 D10 PGPIO7 PHCS_ K1 PHD0 J3 PHD1 H3 H10 PHD10 AIT701G U301 H6 GND_CORE H4 GND_IO0 GND_IO1 H7 F8 GND_IO2 E2 PD0 PD1 E1 PD2 D1 D2 PD3 C2 PD4...

Page 31: ...ogether 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 CLR 1 DOWN 9 RIGHT PWR 5 6 SEL MENU 4 LEFT 7 UP 0 3 2 SEND CONF 8 SW405 680 R403 UP SW403 C415 DNI C412 DNI ...

Page 32: ...and is a biased voltage for the VINNORP The VINNORP and VINNORN signals are then A D converted by the voice band ADC part of AD6726 The digitized speech PCM 8KHz 16KHz is then passed to the DSP section of AD6726 for processing coding interleaving etc CLOSE TO ABB MIC 39p C221 C223 0 1u R221 100ohm 1K R212 VA205 ICVN0505X150FR 2 2u C217 39p C219 2V5_VMIC ICVN0505X150FR VA206 SPOB 413S44 RC10BC MIC2...

Page 33: ... W1 NC6 A19 NC2 D1 NC3 NC1 A1 R15 LGND U15 AOUT2P1 T14 U14 AOUT2P2 AOUT3L M17 AOUT3R N15 AOUT1N N16 AOUT1P N17 AOUT2N1 T15 AOUT2N2 AGND2_15 39p C148 C147 39p AUXOP_R AUXOP_L SPK_P_ABB SPK_N_ABB RCV_P RCV_N AUDIO POWER AMP VBAT C212 220n C213 DNI R208 100K C207 470n R202 39K 0 1u C203 1u C202 C205 470n TPA6205A1ZQVR U201 BYPASS C1 GND B2 C2 IN C3 IN A3 VDD VO B3 VO A1 B1 _SHUTDOWN 39K R209 10K R207...

Page 34: ...Headset Jack to Receiver If jack is removed JACK_DETECT goes from low to high Audio path is switched from earphone to receiver by JACK_DETECT interrupt Hook detection If hook button is pressed ACC_DETECT is changed from high to low This is detected by ACC_DETECT of AD6726 And then hook is detected Figure 3 11 HEADSET JACK INTERFACE R218 1 5K C234 39p 0 1u C226 C232 DNI C230 39p C224 2V5_VMIC 10u 3...

Page 35: ... back light illumination there are 8 White LEDs in Main Board which are driven by KEY_BACKLIGHT port from AD6726 Figure 3 12 KEY BACK LIGHT ILLUMINTION KEY BACKLIGHT LD405 LD401 SSC TWH104 HL LD407 47 R414 R413 47 R410 47 VA401 ICVN0505X150FR 47 R407 R409 47 LD402 47 R412 R411 47 LD403 DNI C408 ICVN0505X150FR VA400 SSC TWH104 HL LD406 LD400 47 R408 VBAT LD404 KEY_BACKLIGHT ...

Page 36: ...ck light Illumination LCD backlight LEDs is controlled by AD6726 via AAT3155 U302 Figure 3 13 MAIN LCD BACKLIGHT ILLUMINATION CHARGE PUMP EN_SET 11 GND 4 5 IN 8 OUTCP U302 C1 10 9 C1 7 C2 6 C2 3 D1 D2 2 1 D3 D4 12 AAT3155ITP T1 C313 1u 1u C314 C312 1u VBAT C316 27p 1 5K R312 27p C315 FB302 100K R313 C311 4 7u 27p C317 MLED2 MLED LCD_DIM_CTRL MLED1 ...

Page 37: ...r training and service purposes 3 14 VIBRATOR The vibrator is placed in the folder cover and contacted to LCD MODULE The vibrator is driven from VIBRATOR GPIO_3 of AD6726 Figure 3 14 Vibrator VIBRATOR 1608 50V J NP0 C409 1u Q400 KTC4075E 2 3 1 R421 1K 10 R420 KDS114E D400 100K R423 J401 1 2 VBAT VIBRATOR ...

Page 38: ...C Program 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 ...

Page 39: ... Only for training and service purposes TEST POINT 40 4 TROUBLE SHOOTING 4 TROUBLE SHOOTING 4 1 RF Component U501 U502 FL500 X500 PAM ASM SW500 Figure 4 1 U501 PAM ASM SKY77518 U501 AD6548 RF Main Chip Transceiver X500 Crystal 26MHz Clock FL500 SAW Filter SW500 Mobile Switch ...

Page 40: ... service purposes 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 190CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting 1 Check Crystal Circuit 2 Check Mobile SW ASM 3 Check RX I Q Signal CHECKING FLOW ...

Page 41: ...HOOTING 42 1 Checking Crystal Circuit R706 X500 26 MHzO K No Crystal Circuit is OK See next Page to check Mobile SW e Yes Change X500 0 R706 R514 10K 0 1u C512 2V75_VVCXO VCC_REF VAFC_NC 18 VCC_BBQ 24 17 23 Q QB 22 REFIN 20 19 REFINB 21 REF_OP C513 0 1u AFC TEST POINT CHECKING FLOW CIRCUIT WAVEFORM Graph 4 2 1 a Graph 4 2 1 b ...

Page 42: ...UBLE SHOOTING 43 2 Checking Mobile SW FEM TEST POINT VBAT 56p C503 20 GND9 GSM_RX 7 4 TX_EN VBATT 1 2 VLOGIC VRAMP 3 U501 BS 5 19 DCS_RX 6 8 C508 10u 56p C500 68p C501 C510 0 01u 68 R503 56p C502 PA_BAND PA_EN ANT_SW TX_RAMP WAVEFORM CIRCUIT Graph 4 2 2 ASM Control Signal EGSM RX V_LOGIC Tx_EN BS C503 ASM PAM C502 C500 ...

Page 43: ...00 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 Check RF Level of U501 7 for GSM U501 6 for DCS Ant SW Mobile SW is OK See next Page to check Rx I Q Signal Pin 7 62dBm Pin 6 63dBm No Changing U501 Yes No For this RF Level test case RX Stand alone Mode is needed refer to chapter 10 Check ANT SW Vdd 0 1 1 G...

Page 44: ...25 32 RX850 RX850B 31 30 RX900 RX900B 29 6 SCLK SDATA 5 SEN 7 TXOP_HI 11 10 TXOP_LO VAFC_NC 18 14 VBAT 4 VCC_BBI VCC_BBQ 24 VCC_FE 1 17 33 GND 2 I IB 3 8 NC 23 Q QB 22 REFIN 20 19 REFINB 21 REF_OP 28 RX1800 RX1800B 27 26 U502 AD6548 EUSY0280101 C526 39p C513 0 1u IN QN QP IP TEST POINT CIRCUIT WAVEFORM Redownload software and calibration again Similar No Replace U502 Yes Check C507 C530 Check if t...

Page 45: ...ved Only for training and service purposes START Redownload SW or Do calibration again HP8960 Test mode 190 CH 7 level setting TCH 190CH 60dBm setting BCCH Spectrum analyzer setting Oscilloscope setting 1 Check Crystal Circuit 3 Check PAM control signal 4 Check TX I Q Signal 2 Check Mobile SW FEM CHECKING FLOW ...

Page 46: ...Only for training and service purposes R706 X500 26 MHzO K No Crystal Circuit is OK 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 0 R706 R514 10K 0 1u C512 2V75_VVCXO VCC_REF VAFC_NC 18 VCC_BBQ 24 17 23 Q QB 22 REFIN 20 19 REFINB 21 REF_OP C513 0 1u AFC ...

Page 47: ...UBLE SHOOTING 48 2 Checking Mobile SW FEM TEST POINT VBAT 56p C503 20 GND9 GSM_RX 7 4 TX_EN VBATT 1 2 VLOGIC VRAMP 3 U501 BS 5 19 DCS_RX 6 8 C508 10u 56p C500 68p C501 C510 0 01u 68 R503 56p C502 PA_BAND PA_EN ANT_SW TX_RAMP WAVEFORM CIRCUIT Graph 4 2 2 ASM Control Signal EGSM RX V_LOGIC Tx_EN BS C503 ASM PAM C502 C500 ...

Page 48: ...00 No No Check C500 C502 C503 Check whether Ant SW Set as TX mode Refer to Graph 4 3 2 Refer to Table 4 3 2 Yes Check ANT SW Vdd Check RF Level of U501 Pin 17 for GSM Pin 19 for DCS Pin17 29 5dBm Pin19 26 5dBm No Yes No Changing board Go to 4 3 4 Checking PAM control signal END For the test TX Stand alone Mode is needed Refer to chapter 10 PL 7 for GSM PL 2 for DCS 0 1 1 GSM Tx BS Tx_EN 1 1 1 DCS ...

Page 49: ...GND8 20 GND9 17 GSM_IN GSM_RX 7 18 NC PGND 21 4 TX_EN VBATT 1 2 VLOGIC VRAMP 3 U501 SKY77518 ANT 11 BS 5 19 DCS_IN DCS_RX 6 8 GND1 C508 10u 56p C500 68p C501 C510 0 01u 68 R503 56p C502 PA_BAND PA_EN ANT_SW TX_RAMP TEST POINT CIRCUIT WAVEFORM Similar Yes No Check TX_RAMP and PAM_EN Any Major Difference or not Similar Go to Next Step Similar Re download S W Check if there is Any Major Difference or...

Page 50: ...efer to Graph4 3 4 Similar Yes No Replace U502 Figure 4 3 4 Graph 4 3 4 CHECKING FLOW DNI C507 2V75_VVCXO C530 DNI C525 27p 0 1u C514 VCC_REF 12 VCC_TXVCO VDD 13 VLDO1 15 16 VLDO2 VLDO3 9 RX1900 RX1900B 25 32 RX850 RX850B 31 30 RX900 RX900B 29 6 SCLK SDATA 5 SEN 7 TXOP_HI 11 10 TXOP_LO VAFC_NC 18 14 VBAT 4 VCC_BBI VCC_BBQ 24 VCC_FE 1 17 33 GND 2 I IB 3 8 NC 23 Q QB 22 REFIN 20 19 REFINB 21 REF_OP ...

Page 51: ...EMSEL VMEM_REG V12 VMIC U19 VRF M19 W15 VRTC T11 VRTCSEL V14 VSIM_REG VEXT_REG1 V11 VEXT_REG2 W11 VGP W14 V8 VCOREFB W8 VCOREOUT VABB N18 J9 NC22 NC23 P18 NC24 N19 NC25 V17 L14 NC26 T13 2V75_VVCXO 0 1u C132 2V8_VEXT C130 1u C125 1u 2V85_VSIM CIRCUIT Figure 4 4 PWR END R400 680 POWERKEY H9 VCXOEN PWRON V5 K9 RESET2P8 RXON W7 NRESET J8 J9 NC22 MCLK V7 MCLKEN T10 T8 INT K10 GPO_0 GPO_29 J10 GPIO_48 D...

Page 52: ...oltage of The LDO outputs at U102 Logic level at RPWRONN of U102 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 VCORE 1 8V VVCXO 2 75V VMEM 2 8V VSIM 1 8V or 2 85V VEXT 2 8V VMIC 2 5V Replace U102 Does it work properly Replace the main board YES YES YES YES YES NO NO NO NO NO NO Rep...

Page 53: ...u C307 2V8_MV 1u C306 1V8_VCAM C305 1u 8 VOUT1 VOUT2 7 R305 100K EN1 2 3 EN2 5 GND NC1 4 6 NC2 9 PGND 1 VIN U300 RT9011 MGPQW VBAT 2V8_VEXT VCHG_ABB 1u C244 _CHG R238 20K VCHARGE R237 12K C248 1u VBUS_USB USB_VBUS R236 10K C245 1u _PPR C246 1u BAT 11 8 GND 6 IMIN IUSB 7 IVDC 9 13 PGND 10 USB_BYP VDC 1 VDC_BYP 12 2 VUSB _CHG 4 _EN 5 3 _PPR ISL9221 U205 1u C247 VBAT _CHG_EN CIRCUIT Figure 4 5 ...

Page 54: ...ctor CN202 well soldered Voltage at C245 6 4V Are U300 FL201 well soldered YES YES YES YES Battery is charged Charging is properly operating NO NO NO Resolder the CN202 Pin 12 13 VCHARGE The TA is out of order Change the TA Resolder the U300 FL201 Replace the U205 Battery is charged NO Change the battery Charging is properly operating YES NO CHECKING FLOW ...

Page 55: ...ll right reserved Only for training and service purposes 4 TROUBLE SHOOTING 56 4 6 Vibrator Trouble Q400 R421 R330 VIBRATOR 1608 50V J NP0 C409 1u Q400 KTC4075E 2 3 1 R421 1K 10 R420 KDS114E D400 100K R423 J401 1 2 VBAT VIBRATOR TEST POINT CIRCUIT Figure 4 6 ...

Page 56: ...the engineering mode and set vibrator on at vibration of BB test menu START Is the voltage at pin2 of Q400 high YES NO Is the voltage at pin 3 of Q400 low YES Check the contact of vibrator YES Replace vibrator YES Vibrator Working well Check the soldering of R421 D400 NO Check the soldering Of D400 R420 Reassembly or Replace vibrator NO CHECKING FLOW ...

Page 57: ...LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 58 4 7 LCD Trouble U301 CN400 TEST POINT Figure 4 7 ...

Page 58: ...CN301 8 VOUT1 VOUT2 7 R305 100K EN1 2 3 EN2 5 GND NC1 4 6 NC2 9 PGND 1 VIN U300 RT9011 MGPQW C318 1u VBAT 100ohm R316 L_DATAOUT02 L_DATAOUT03 LCD_WR L_MAIN_LCD_CS LCD_RS LCD_RD 2V8_VEXT 2V8_MV LCD_IF_MODE_0 LCD_IF_MODE_1 L_DATA14 L_DATA15 L_DATA12 L_DATA13 L_DATA10 L_DATA11 L_DATA08 L_DATA09 L_DATA06 L_DATA07 L_DATA04 L_DATA05 L_DATA02 L_DATA03 L_DATA00 L_DATA01 L_DATAOUT06 L_DATAOUT07 L_DATAOUT04...

Page 59: ...G FLOW START Is the connection of FPCB with connector on PCB CN301 ok YES NO Reassemble FPCB with CN301 connector Is Voltage pin8 of U300 2 8V NO Replace U300 Check the soldering of CN301 NO YES YES Check the soldering of LCD Line Resoldering CN301 NO Resoldering FL304 FL305 Does LCD work properly NO Replace LCD module YES LCD working well YES ...

Page 60: ... 61 4 TROUBLE SHOOTING LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 8 Camera Trouble U400 AIT701G U301 TEST POINT Figure 4 8 ...

Page 61: ...D8 PLCD4 A8 PLCD5 B8 PLCD6 C8 PLCD7 PLCD8 C7 C6 PLCD9 PLCD_A0 B3 PLCD_RD_ A3 A4 PLCD_WE_ J2 PMCLK PPXL_CLK F1 PRST_ K3 PHLCD_A0 J7 PHLCD_BY K7 PHRD_ J1 PHSYNC E3 PHWAIT_ K9 K2 PHWE_ A10 PLCD0 B10 PLCD1 B6 PLCD10 PLCD11 C5 PLCD12 B5 A6 PLCD13 C4 PLCD14 PLCD15 A5 B4 PLCD16 PLCD17 C3 PHD11 H9 G10 PHD12 PHD13 G9 G8 PHD14 F10 PHD15 K4 PHD2 J4 PHD3 PHD4 K5 PHD5 J5 K6 PHD6 J6 PHD7 K10 PHD8 PHD9 J9 J10 PH...

Page 62: ...lf Has no trouble YES NO Replace the U300 Change the camera module Does it work properly YES Itís camera moduleís problem Replace the camera module Check the voltage of pin 8 of U300 is 2 8V and Voltage of pin 7 of U300 is 1 8V YES Check the signals of the FL302 YES Camera will work properly NO NO Go to the LCD trouble Resoldering the Filter NO CHECKING FLOW ...

Page 63: ...N201 17 8T 01PP SUSY0022601 1 2 C210 39p VA203 ICVN0505X150FR 0 R203 VA204 ICVN0505X150FR 39p C206 39p C211 R206 0 SPK_OUT_N SPK_OUT_P Figure 4 9 AUDIO POWER AMP VBAT C212 220n C213 DNI R208 100K C207 470n R202 39K 0 1u C203 1u C202 C205 470n TPA6205A1ZQVR U201 BYPASS C1 GND B2 C2 IN C3 IN A3 VDD VO B3 VO A1 B1 _SHUTDOWN 39K R209 10K R207 R204 10K C201 DNI SPK_OUT_N SPK_OUT_P SPK_P_ABB SPK_N_ABB A...

Page 64: ...ining and service purposes 4 TROUBLE SHOOTING 65 START Check the state of contact of speaker Speaker Working well Check the Audio signal R207 R204 No Yes Change the U103 Replace Change speaker No Check the Power voltage U201 VBAT And work properly No Yes Change the U201 Yes CHECKING FLOW ...

Page 65: ...ning and service purposes 4 TROUBLE SHOOTING 66 4 10 SIM Card Interface Trouble TEST POINT CIRCUIT J400 R401 C324 Figure 4 10 15K R401 C404 1000p 2V85_VSIM DNI C403 220n C401 2 C2 C3 3 4 C5 C6 5 C7 6 GND1 7 8 GND2 GND3 9 10 GND4 C402 J400 1 C1 DNI 2V85_VSIM R402 0 SIM_DATA SIM_CLK SIM_RST ...

Page 66: ...e the SIM Card This phone supports 3V or 1 8V SIM card YES Is Voltage at the pin1 pin6 of J400 2 85V or 1 8V NO Change the U102 NO YES Resolder J400 YES Voltage output of VSIM LDO Is 2 85V 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 67: ...02 R227 C226 R222 CN202 TEST POINT R218 1 5K C234 39p 0 1u C226 C232 DNI C230 39p C224 2V5_VMIC 10u 39p C233 0 1u C220 R225 DNI R230 47 19 2 21 3 4 5 6 7 8 9 CN202 1 10 11 12 13 14 15 16 R222 2 2K C225 DNI VBAT 1800 FB802 FB801 1800 39p C229 R226 100K 100K R224 0 R227 2V8_VEXT ACC_DETECT HS_OUT_R HS_OUT_L AUXIN AUXIP IO_P7 RPWRON DSR IO_P6 JACK_DETECT CIRCUIT Figure 4 11 ...

Page 68: ...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 Resolder R2181 R222 Is voltage level at R218 About 2 5v Change the U102 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 Reso...

Page 69: ...es 4 TROUBLE SHOOTING 70 4 12 KEY backlight Trouble TEST POINT CIRCUIT VA401 KEY BACKLIGHT LD405 LD401 SSC TWH104 HL LD407 47 R414 R413 47 R410 47 VA401 ICVN0505X150FR 47 R407 R409 47 LD402 47 R412 R411 47 LD403 DNI C408 ICVN0505X150FR VA400 SSC TWH104 HL LD406 LD400 47 R408 VBAT LD404 KEY_BACKLIGHT Figure 4 12 ...

Page 70: ...ht reserved Only for training and service purposes 4 TROUBLE SHOOTING 71 START Is the level at VA401 LOW 0V NO Check U102 Are all LEDs Working NO YES Check the soldering each R and LED Backlight will work properly NO Replace or resolder component YES CHECKING FLOW ...

Page 71: ...d service purposes 4 TROUBLE SHOOTING 72 4 13 Receiver Trouble TEST POINT CIRCUIT C148 C147 C152 39p C149 39p C150 39p C151 39p U15 AOUT2P1 T14 U14 AOUT2P2 AOUT3L M17 AOUT3R N15 AOUT1N N16 AOUT1P N17 AOUT2N1 T15 AOUT2N2 39p C148 C147 39p AUXOP_R AUXOP_L SPK_P_ABB SPK_N_ABB RCV_P RCV_N Figure 4 13 ...

Page 72: ... 73 START Does waveform at C147 and C148 fluctuate NO Change the U102 YES Receiver will work properly SETTING After initialize Agilent 8960 Test EGSM DCS mode Set the property of audio as PRBS or continuous wave Set the receiving volume of mobile as Max Is receiver connected Properly YES NO Resolder Change the receiver CHECKING FLOW ...

Page 73: ...for training and service purposes TEST POINT CIRCUIT MIC 201 C228 R219 C223 R216 C227 CLOSE TO ABB MIC 39p C221 C223 0 1u R221 100ohm 1K R212 VA205 ICVN0505X150FR 2 2u C217 39p C219 2V5_VMIC ICVN0505X150FR VA206 SPOB 413S44 RC10BC MIC201 1 2 C228 39p 100ohm R219 C227 39p 2 2K R223 R216 39p 2 2K C222 VINNORP VINNORN Figure 4 14 ...

Page 74: ...oses START NO YES Microphone will work properly SETTING After initialize Agilent 8960 Test EGSM DCS mode YES Check the signal Level at each side of MIC201 Is it a few tens mV AC Check the soldering of C227 C228 C223 R219 R216 Check the Voltage VMIC 2 5V NO Change the microphone YES NO Resolder component Change the U102 CHECKING FLOW ...

Page 75: ... R105 _RD X100 SSP T7 F_7PF_20PPM 1 2 3 4 32 768KHz _LBS 10M R105 C122 DNI OSCIN OSCOUT W3 A18 NHWR A17 NLWR NRD A16 NWAIT A12 B12 NWE W4 H4 B11 NADV GPIO_6 G5 GPIO_3 G3 GPIO_4 G2 GPIO_5 G1 F2 GPIO_0 GPIO_1 F1 G4 GPIO_2 A11 BURSTCLK CLKIN B9 _UBS _WR C120 1000p 3 3M R106 C119 DNI BT_RTS BT_CTS VIBRATOR nFM_RESET PA_BAND _UBS CAM_INT T_Detect _RD _LBS _WAIT _WR 26M Figure 4 15 ...

Page 76: ...rvice purposes 4 TROUBLE SHOOTING 77 RTC will work properly Is frequency at R105 about 32 768KHz START Resolder the X100 or change the X100 NO YES YES Is voltage at R105 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 77: ...DO_USB VDDPLL G2 VDDR3V A4 B2 VDDRF VDDTF B1 H1 VDDVCO H4 VDDXO VREG1 A3 VREG2_VBAT A2 B3 VREG_CTL C2 VSS1 F9 RF_ACTIVE_GPIO4 RST_N B4 SCL_TX_PU_TDO_N A9 A8 SDA_TX_PU_TDO TM0 J6 H6 TM1 TM2 H5 D4 TST1 A6 TX_CONFX_WLAN_ACTIVITY_GPIO2 UART_CTS_N C8 C9 UART_RTS_N UART_RXD B9 UART_TXD B8 VCTRIFP J2 A7 VDDC1 VDDC2 B7 BT_PRIORITY_STATUS_GPIO3 E9 B5 BT_WAKE_GPIO_0 H7 GPIO7_TX_PU_TDDN_TX_PU_TDO_USB HOST_WA...

Page 78: ...reserved Only for training and service purposes Check Bias Voltage 2V8_Vext at TP1 START NO YES Replace U600 26MHz check at TP601 YES NO Replace X500 _BT_RST check at TP600 YES NO Replace U102 Bluetooth on is OK YES NO Re download SW and try again Bluetooth will work properly CHECKING FLOW ...

Page 79: ...31 L701 FM RADIO 2V8_VEXT C700 1u R705 47 0 1u C703 C702 22n GPIO_1 L701 2 2nH GPIO_2 VGP VGP VGP 4 7K R703 R701 100K DNI R700 VGP R704 4 7K 11 10 VIO _RST 5 _SEN 6 100K R702 4 12 GND2 15 GND3 19 GPIO1 GPIO2 18 17 GPIO3 LOUT 14 1 NC1 NC2 20 21 PGND RCLK 9 RFGND 3 ROUT 13 7 SCLK 8 SDIO VA 16 VD FM_ANT SI4702 C19 GM U700 FMIP 2 GND1 BT_32K FM_SDATA FM_SCLK FM_HP_R FM_HP_L nFM_RESET Figure 4 17 ...

Page 80: ...d START Check of ear_jack condition NO YES YES FM_radio will work properly Check condition of matching components L201 C231 L701 A condition is good NO YES Give the additory solder in L201 C231 L701 Replace CN202 Check Bias Voltage VGP at C700 YES NO Replace U102 Check BT_32k at R705 YES NO Replace U102 FM_Radio work is good NO Replace U700 CHECKING FLOW ...

Page 81: ...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 82 ...

Page 82: ... 5 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 ...

Page 83: ...nly Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 84 2 Select Configuration from the menu and you may see this window 3 Press key to select DLL file and press Open 5 DOWNLOAD ...

Page 84: ...ectronics Inc All right reserved Only for training and service purposes 85 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 7 Repeat step 4 5 to select FlexData mot ...

Page 85: ...ternal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 86 8 Check if the ADI option is set to Hermes 9 Press OK to end Configuration 5 DOWNLOAD Select Rate ...

Page 86: ...08 LG Electronics Inc All right reserved Only for training and service purposes 87 5 DOWNLOAD 10 Press START to execute download 11 Once downloading is started press STOP button to keep from re downloading after downloading is completed ...

Page 87: ...T B _ M C P T N I _ B B D _ T B h t o o t e u l B W S _ T N A x i r t a M _ Y E K M I S C I g n i g r a h C P V O y r e t t a B V 7 3 A m 0 0 9 T S R A T A D K L C _ M I S N O C _ Y E K W O R _ Y E K N E _ G H C r o t a r b i V 7 1 7 4 X A M B S U B S U 5 5 1 3 T A A 5 5 1 3 T A A p m u P e g r a h C L R T C _ M I D _ D C L LCD D E L M 3 2 1 0 D D A 5 1 0 0 A T A D 2 0 7 4 I S 2 0 7 4 I S o i d a ...

Page 88: ... B x R x T _ g u b e D x R x T _ T B _ M C P T N I _ B B D _ T B h t o o t e u l B W S _ T N A x i r t a M _ Y E K M I S C I g n i g r a h C P V O y r e t t a B V 7 3 A m 0 0 9 T S R A T A D K L C _ M I S N O C _ Y E K W O R _ Y E K N E _ G H C r o t a r b i V 7 1 7 4 X A M B S U B S U 5 5 1 3 T A A 5 5 1 3 T A A p m u P e g r a h C L R T C _ M I D _ D C L LCD D E L M 3 2 1 0 D D A 5 1 0 0 A T A D...

Page 90: ...PIO_44 C6 GPIO_47 J10 GPIO_48 GPIO_5 G1 GPIO_55 P3 N3 M5 F2 GPIO_0 GPIO_1 F1 H2 GPIO_10 GPIO_11 J1 GPIO_12 J2 J3 GPIO_13 H6 GPIO_14 J6 GPIO_15 GPIO_18 B5 D5 GPIO_19 G4 GPIO_2 GPIO_20 A4 C5 GPIO_21 P4 GPIO_22 GPIO_23 B7 GPIO_24 N7 GND16 P5 P6 GND17 GND18 R4 R5 GND19 E14 GND2 GND20 R6 G8 GND21 GND22 F12 M3 GND23 G17 GND3 H15 GND4 GND5 J12 GND6 J13 GND7 K6 GND8 L6 GND9 B19 DATA6 B18 DATA7 C17 DATA8 C...

Page 91: ...801 GU041 18P E1000 CN202 1 10 11 12 13 14 15 16 17 VA203 ICVN0505X150FR VA202 ICVN0505X150FR VBUS_USB R222 2 2K VCHG_ABB 2 2K R223 0 1u C203 12K R235 0 R203 C225 DNI C243 1u 0 R205 C248 1u VA204 ICVN0505X150FR 39p C206 1u C202 39p VBUS_USB 4 8 IN2 5 NC1 7 NC2 NO1 2 10 NO2 P_GND 11 1 V C240 U203 MAX4717ETB T 3 COM1 COM2 9 GND 6 IN1 R217 12K R216 39p USB_VBUS 2 2K C237 C222 10u VUSB R236 10K 39p C2...

Page 92: ...D13 G9 G8 PHD14 F10 PHD15 K4 PHD2 J4 PHD3 PHD4 K5 PHD5 J5 K6 PHD6 J6 PHD7 K10 PHD8 PHD9 J9 J10 PHGPIO_CS_ J8 PHINT K8 PHLCD2_CS_ PD5 C1 PD6 A1 PD7 B1 PDCLK F3 PGPIO0 E9 PGPIO1 D9 C10 PGPIO2 PGPIO3 B9 PGPIO4 A7 PGPIO5 B7 PGPIO6 F9 D10 PGPIO7 PHCS_ K1 PHD0 J3 PHD1 H3 H10 PHD10 AIT701G U301 H6 GND_CORE H4 GND_IO0 GND_IO1 H7 F8 GND_IO2 E2 PD0 PD1 E1 PD2 D1 D2 PD3 C2 PD4 R301 4 7K 5 G1 10 G2 1 INOUT_A1...

Page 93: ...C405 C401 C418 DNI 1u LD403 C407 2V85_TF R427 680 DNI R424 R421 1K 680 C413 DNI C422 DNI 680 R426 END SW409 LEFT 10 R420 KDS114E CONF D400 SW408 R431 56K R432 56K DNI C408 2 C2 C3 3 4 C5 C6 5 C7 6 GND1 7 8 GND2 GND3 9 10 GND4 C402 2V8_VEXT J400 1 C1 DNI 2V85_VSIM ICVN0505X150FR VA400 SSC TWH104 HL LD406 SW404 C419 SEL DNI LD400 ICVN0505X150FR VA403 56K R430 R405 680 100K R423 47 C421 VBAT R408 ICV...

Page 94: ... 10 12 GND4 GND5 13 GND6 14 GND7 15 16 GND8 20 GND9 17 GSM_IN GSM_RX 7 18 NC PGND 21 4 TX_EN VBATT 1 2 VLOGIC VRAMP 3 U501 SKY77518 ANT 11 BS 5 19 DCS_IN DCS_RX 6 8 GND1 C508 OUT501 10u 56p L505 18nH C500 180 R509 C524 68p 3p C501 VCC_REF 12 VCC_TXVCO VDD 13 VLDO1 15 16 VLDO2 VLDO3 9 R515 0 RX1900 RX1900B 25 32 RX850 RX850B 31 30 RX900 RX900B 29 6 SCLK SDATA 5 SEN 7 TXOP_HI 11 10 TXOP_LO VAFC_NC 1...

Page 95: ...PIO4 RST_N B4 SCL_TX_PU_TDO_N A9 A8 SDA_TX_PU_TDO TM0 J6 H6 TM1 TM2 H5 D4 TST1 A6 TX_CONFX_WLAN_ACTIVITY_GPIO2 UART_CTS_N C8 C9 UART_RTS_N UART_RXD B9 UART_TXD B8 VCTRIFP J2 A7 VDDC1 VDDC2 B7 BT_PRIORITY_STATUS_GPIO3 E9 B5 BT_WAKE_GPIO_0 H7 GPIO7_TX_PU_TDDN_TX_PU_TDO_USB HOST_WAKE_USB_DETACH_GPIO_1 B6 HUSB_DN J8 J7 HUSB_DP A5 LPO_IN PA_CTL_GPIO6_TX_PU_TDD_TX_PU_T H8 F8 PCM_CLK_SCK PCM_IN_SPDIF_IF_...

Page 96: ...704 4 7K 11 10 VIO _RST 5 _SEN 6 100K R702 4 12 GND2 15 GND3 19 GPIO1 GPIO2 18 17 GPIO3 LOUT 14 1 NC1 NC2 20 21 PGND RCLK 9 RFGND 3 ROUT 13 7 SCLK 8 SDIO VA 16 VD FM_ANT SI4702 C19 GM U700 FMIP 2 GND1 BT_32K FM_SDATA FM_SCLK FM_HP_R FM_HP_L nFM_RESET 7 CIRCUIT DIAGRAM LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 98: ...LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 99 8 BGA IC Pin Check 8 BGA IC Pin Check And Not use U102 AD6726 EUSY0364401 Top View ...

Page 102: ... 103 9 PCB LAYOUT LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LD400 407 No KEY backlight MIC201 MIC No MIC for SPK phone ...

Page 103: ...and service purposes CN202 MMI CONNECTOR U502 AD6548 Tx Rx Error FL500 B9308 Rx sensitivity U501 SKY77518 Tx Power U301 AIT701G No camera preview U102 AD6726 Can t boot the phone U100 S71PL256NC0 Can t boot the phone CN400 LCD CONNECTOR U602 BCM2046 Bluetooth Error U700 SI4702 No FM Radio CN300 Camera CONNECTOR ...

Page 104: ...is 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 MF Mode ELT Mode Version Factory Reset Eng Mode All Auto Test Main LCD LCD Backlight Key Backlight Speaker Vibrator Camera ...

Page 105: ... Main LCD This menu is to test the LCD Color display and Grey scale 1 Color WHITE 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 t...

Page 106: ... seconds then it is replayed on the speaker automatically 10 1 9 KeyPad When a pop up message shows ÆPress Any Key Ø you may press any keys including side keys but not Soft2 Key If the key is working properly name of the key is displayed on the screen Test will be completed in 15 seconds automatically 10 2 ELT Mode MENU 2 This manufacturing menu is to test life time Early Life Time This is NOT a n...

Page 107: ...to view and test the basic functions provided by a handset 10 5 1 Call Timer This displays total conversation time This value is never reset even after Factory Reset 10 5 2 Band Selection This menu is designed to allow a service man engineer to select band and test 10 5 3 Battery info 1 TEMP Cal This displays the value of Temperature Calibration The following menus are displayed in order TEMP_HIGH...

Page 108: ...0000 0xFFFF 9 aecDlUlDelay 1 Enable 2 Disable 8 aecEnableComfortNoise 0x0000 0x7FFF 7 aecNlpAttenuation 1 Enable 2 Disable 6 aecEnableNlp 1 Enable 2 Disable 5 aecEnableCoefUpdate 0x0000 0x4000 4 aecMaxStepSize 0x0000 0xFFFF 3 aecResidualThreshold 0x0000 0xFFFF 2 aecMicThreshold 1 Enable 2 Disable 1 aecMode 1 Uplink 5 Echo Canceller 6 test table5 5 test table4 4 test table3 3 test table2 2 test tab...

Page 109: ... 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 9 6 1 Cell Env Idle 9 6 2 Cell Env Ded LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 110: ...Dialog Menu select the values as explained below Port select a correct COM port Baud rate 38400 Leave the rest as default values B Tx 1 Selecting Channel Select one of GSM or DCS DCS Band and input appropriate channel 2 Selecting APC a Select either Power level or Scaling Factor b Power level Input appropriate value GSM between 5 19 or DCS DCS between 0 15 c Scaling Factor A Ramp Factor appears on...

Page 111: ...nly for training and service purposes 112 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 11 STAND ALONE TEST Figure 10 3 1 HW test program ...

Page 112: ...LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 113 11 STAND ALONE TEST Figure 10 3 3 Ramping profile Figure 10 3 2 HW test setting ...

Page 113: ...M phone 12 2 Equipment List Figure 12 2 1 Equipment Setup 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 HP GPIB Agilent Calibration Final test software LG Test SIM Card PC for Software Installation Pentium II class above 300MHz Table 12 2 1 Calibration Equipment ...

Page 114: ...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 115: ...ort 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 KP175 12 AUTO CALIBRATION 3 ...

Page 117: ...ue Set band EGSM and press Start button the result window will show correction values per every power level and gain 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 temp...

Page 118: ...31 10 26 36 38 37 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 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 13 EXPLODED VIEW REPLACEMENT PART LIST 13 1 EXPLODED VIEW LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 120: ...1 CUTTING NS Black 7 4 MTAB00 TAPE PROTECTION MTAB0243401 CUTTING NS Transparent 1 4 MTAB01 TAPE PROTECTION MTAB0262201 CUTTING NS Transparent 9 4 MTAD00 TAPE WINDOW MTAD0090101 CUTTING NS Without Color 3 4 MWAC00 WINDOW LCD MWAC0101601 MOLD PMMA HI835M Black 2 5 BFAA00 FILM INMOLD BFAA0100601 empty 3 ACGM00 COVER ASSY REAR ACGM0115201 Black D 4 MCCE00 CAP RECEPTACLE MCCE0044301 MOLD Urethane Rubb...

Page 121: ...2 1 6 4 SWCH FZB Without Color E 40 3 MLAK00 LABEL MODEL MLAK0018622 PRINTING empty Without Color 5 ACGZ00 COVER ASSY ACGZ0016001 COVER ASSY BRACKET Black 6 MBFZ00 BRACKET MBFZ0031201 MOLD PC LUPOY SC 1004A Gray 17 6 MPBN00 PAD SPEAKER MPBN0058001 CUTTING NS Black 19 6 MTAK00 TAPE CAMERA MTAK0013601 CUTTING NS Black 20 6 MTAZ00 TAPE MTAZ0219301 COMPLEX empty Without Color 18 5 ADCA00 DOME ASSY MET...

Page 122: ...TENNA GSM FIXED SNGF0032201 3 0 2 0 dBd internal bluetooth chip antenna SINGLE 2 0 50 3 0 6 BAT400 BATTERY CELL LITHIUM SBCL0001701 2 V 0 5 mAh CYLINDER Reflow type BB Max T 1 67 phi 4 8 Pb Free 6 C100 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C101 CAP CHIP MAKER ECZH0001215 1 uF 10V K X5R TC 1005 R TP 6 C102 CAP CERAMIC CHIP ECCH0007802 4 7 uF 10V M X5R TC 1608 R TP 6 C103 CAP CH...

Page 123: ...X5R TC 1005 R TP 6 C128 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C129 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C130 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C131 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C132 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C133 CAP CHIP MAKER ECZH0001215 1 uF 10V K X5R TC 1005 R ...

Page 124: ... NP0 TC 1005 R TP 6 C209 CAP CHIP MAKER ECZH0000841 56 pF 50V J NP0 TC 1005 R TP 6 C210 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C211 CAP CERAMIC CHIP ECCH0000120 39 pF 50V J NP0 TC 1005 R TP 6 C212 CAP CHIP MAKER ECZH0001216 220 nF 10V K X5R TC 1005 R TP 6 C214 CAP TANTAL CHIP ECTH0005202 100 uF 4V M L_ESR 2012 R TP empty empty empty empty empty empty empty 6 C218 CAP CHIP MAKE...

Page 125: ...01 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C302 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C304 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C305 CAP CHIP MAKER ECZH0001215 1 uF 10V K X5R TC 1005 R TP 6 C306 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C307 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C308 CAP CERAMIC ...

Page 126: ...P 6 C516 CAP CHIP MAKER ECZH0000841 56 pF 50V J NP0 TC 1005 R TP 6 C517 CAP CERAMIC CHIP ECCH0000104 3 pF 50V C NP0 TC 1005 R TP 6 C518 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C519 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C520 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C521 CAP CERAMIC CHIP ECCH0000117 27 pF 50V J NP0 TC 1005 R TP 6 C522 CAP CHI...

Page 127: ...GHT 0 30MM FPC STRAIGHT BOTH SMD R TP empty 6 D100 DIODE SWITCHING EDSY0005701 EMT3 80 V 4 A R TP 6 D101 DIODE SWITCHING EDSY0010501 ESC 30 V 100 mA R TP SWITCH DIODE 6 D400 DIODE SWITCHING EDSY0010501 ESC 30 V 100 mA R TP SWITCH DIODE 6 FB300 FILTER BEAD CHIP SFBH0007102 10 ohm 1005 Ferrite Bead 6 FB301 FILTER BEAD CHIP SFBH0007102 10 ohm 1005 Ferrite Bead 6 FB302 FILTER BEAD CHIP SFBH0007102 10 ...

Page 128: ... J 1005 R TP 6 Q400 TR BJT NPN EQBN0007601 SOT 23 0 15 W R TP EMT3 6 R100 RES CHIP MAKER ERHZ0000443 2200 ohm 1 16W J 1005 R TP 6 R101 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R102 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R103 PCB ASSY MAIN PAD SHORT SAFP0000501 6 R104 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R105 RES CHIP ERHY0000512 10M ohm 1 16W J 1608 R TP...

Page 129: ...J 1005 R TP 6 R220 RES CHIP MAKER ERHZ0002401 12 Kohm 1 16W J 1005 R TP 6 R222 RES CHIP MAKER ERHZ0000443 2200 ohm 1 16W J 1005 R TP 6 R224 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R226 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R230 RES CHIP MAKER ERHZ0000483 47 ohm 1 16W J 1005 R TP 6 R231 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R232 RES CHIP MAKER ERH...

Page 130: ... ERHZ0000702 10 ohm 1 10W J 1608 R TP 6 R421 RES CHIP MAKER ERHZ0000404 1 Kohm 1 16W J 1005 R TP 6 R423 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R500 PCB ASSY MAIN PAD SHORT SAFP0000501 6 R501 PCB ASSY MAIN PAD SHORT SAFP0000501 6 R503 RES CHIP MAKER ERHZ0000504 68 ohm 1 16W J 1005 R TP 6 R506 RES CHIP MAKER ERHZ0000522 24 ohm 1 16W J 1005 R TP 6 R507 RES CHIP MAKER ERHZ0000242 220 ...

Page 131: ...B Free 6 U204 DIODE TVS EDTY0006501 SC70 6L 5 25 V 100 W R TP 6 U205 IC EUSY0351601 DFN 12 PIN R TP Dual Charger IC Bypass IC Charger 6 U300 IC EUSY0319001 WDFN 8L 8 PIN R TP 300mA 300mA 2 8V 1 8V Dual LDO 6 U301 IC EUSY0318501 BGA 84 PIN R TP 7x7 VGA Camera Backend IC 6 U302 IC EUSY0336501 TSOPJW 12 PIN R TP 6 U501 RF MODULE HANDSET SMRH0004501 MHz MHz Dual band for EU ASM PAM 6 U502 IC EUSY02801...

Page 132: ...E 1608 R TP PB FREE ZENER 6 LD403 DIODE LED CHIP EDLH0011901 WHITE 1608 R TP PB FREE ZENER 6 LD404 DIODE LED CHIP EDLH0011901 WHITE 1608 R TP PB FREE ZENER 6 LD405 DIODE LED CHIP EDLH0011901 WHITE 1608 R TP PB FREE ZENER 6 LD406 DIODE LED CHIP EDLH0011901 WHITE 1608 R TP PB FREE ZENER 6 LD407 DIODE LED CHIP EDLH0011901 WHITE 1608 R TP PB FREE ZENER 6 MIC201 MICROPHONE SUMY0010515 UNIT 44 dB 4 1 35...

Page 133: ... 47 ohm 1 16W J 1005 R TP 6 R419 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R422 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R424 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R425 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R426 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 R427 RES CHIP MAKER ERHZ0000505 680 ohm 1 16W J 1005 R TP 6 SPFY00 PCB M...

Page 134: ...3 SEGY00 EAR PHONE EAR MIKE SET SGEY0003212 10mW 16 OHM 105dB 10KHZ 450HZ empty BLACK EARPHONE HOUSING SILVER 18P MMI CONNECTOR MONO18P 5P LOW COST 3 SSAD00 ADAPTOR AC DC SSAD0028801 100 240V 5060 Hz 5 6 V 4 A CE AC DC ADAPTOR 85Vac 264Vac 5 6V 0 8V 400mA 5060 WALL 2P I O CONNECTOR 13 3 Accessory Note This Chapter is used for reference Part order is ordered by SBOM standard on GCSC Note 135 LGE In...

Page 135: ...Note ...

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LG KP175, Service Manual

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