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LG KP175 Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
1 Introduction
Purpose
Regulatory Information
Abbreviations
2 Performance
H/W Features
Technical Specification
3 Technical Brief
Power Amplifier (SKY77518, U501)
Band Select
Transceiver (AD6548, U502)
26 Mhz Clock (Crystal, X500)
Baseband Processor (AD6726, U102)
Display and Interface
Camera Interface(AIT701G, U301)
Keypad Switches and Scanning
Microphone
Main Speaker
Headset Interface
Key Back-Light Illumination
LCD Back-Light Illumination
Vibrator
Battery Charging
4 Trouble Shooting
RF Component
RX Trouble
TX Trouble
Power on Trouble
Charging Trouble
Vibrator Trouble
LCD Trouble
Camera Trouble
Speaker Trouble
SIM Card Interface Trouble
Earphone Trouble
KEY Backlight Trouble
Receiver Trouble
Microphone Trouble
RTC Trouble
Bluetooth (KP175 Only)
FM Radio (KP175 Only)
5 Download
6 Block Diagram
7 Circuit Diagram
8 BGA IC Pin Check
9 Pcb Layout
10 Engineering Mode
MF Mode [MENU 1]
All Auto Test
Main Lcd
Lcd Backlight
Key Backlight
ELT Mode [MENU 2]
Version [MENU 3]
Factory Reset [MENU 4]
Eng Mode [MENU 5]
Call Timer
Band Selection
Network Info [MENU 6]
11 Stand Alone Test
Introduction
Setting Method
Means of Test
12 Auto Calibration
Overview
Equipment List
Test Jig Operation
Procedure
Agc
Apc
Adc
13 Exploded View & Replacement Part List
Exploded View
Replacement Parts
Main Component
Accessory
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Internal Use Only
Service Manual
KP175 / KP170
Date: July, 2008 / Issue 1.0
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Summary of Contents for LG KP175
Page 1
Internal Use Only Service Manual KP175 / KP170 Date: July, 2008 / Issue 1.0...
Page 2: Table Of Contents
4.14 Microphone Trouble ......74 4.15 RTC Trouble ........76 4.16 Bluetooth (KP175 only) ......78 4.17 FM Radio (KP175 only)......80 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 3 - Only for training and service purposes...
Page 3: Only For Training And Service Purposes
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 4 - Only for training and service purposes...
Page 4: Introduction
The user may not make any changes and/or repairs expect as specifically noted in this manual. Therefore, note that unauthorized alternations or repair may affect the regulatory status of the system and may void any remaining warranty. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 5 -...
Page 5: Only For Training And Service Purposes
• When returning system boards or parts like EEPROM to the factory, use the protective package as described. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 6 - Only for training and service purposes...
Page 6: Abbreviations
International Portable User Identity Intermediate Frequency Liquid Crystal Display Low Drop Output Light Emitting Diode OPLL Offset Phase Locked Loop Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 7 - Only for training and service purposes...
Page 7: Only For Training And Service Purposes
Time Division Multiple Access UART Universal Asynchronous Receiver/Transmitter Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensated Crystal Oscillator Wireless Application Protocol LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 8 - Only for training and service purposes...
Page 8: Performance
Loud Speaker Voice Recoding Microphone Speaker/Receiver One way speaker Travel Adapter MIDI SW MIDI (Mono SPK) Camera Bluetooth Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 9 - Only for training and service purposes...
Page 9: Technical Specification
8 dBm 22 dBm 6 dBm 20 dBm 4 dBm 18 dBm 2 dBm 16 dBm 0 dBm LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 10 - Only for training and service purposes...
Page 10: Only For Training And Service Purposes
3,000~ <6,000 6,000 GSM900 Offset from Carrier (kHz) Max. (dBm) Output RF Spectrum (due to switching transient) 1,200 1,800 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 11 - Only for training and service purposes...
Page 11: Only For Training And Service Purposes
* Mean that Adopt a straight line in between 300 Hz and 1,000 Hz to be Max. level in the range. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 12 - Only for training and service purposes...
Page 12: Only For Training And Service Purposes
0.05 V ≤ 3.42 0.05V (Call), 1minutes/1time (Receiver) Low Voltage Warning ≤ 3.42 0.05 V (Standby), 1minutes/3time (Speaker) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes...
Page 13: Only For Training And Service Purposes
Capacity: 900mAh Switching-mode charger Travel Charger Input: 100 ~ 240 V, 50/60 Hz Output: 6.6 V, 400 mA LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...
Page 14: Technical Brief
VLOGIC pad. This feature provides additional flexibility for the designer in the selection of FEM interface control logic. Figure 3.1 Functional Block Diagram Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 15 -...
Page 15: Only For Training And Service Purposes
RF and DC Ground GMD PADS GROUND GRID Ground Pads, module underside SKY77517 Pad Names and Signal Descriptions LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 16 - Only for training and service purposes...
Page 16: Band Select
Table 3.2.1 Band SW Logic Table DCS_RX VBATT GSM_RX GND9 U501 GND1 DCS_IN GND2 SKY77518 GND3 GSM_IN GND8 Figure 3.2.1 PAM+ASM CIRCUIT DIAGRAM Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 17 - Only for training and service purposes...
Page 17: Transceiver (Ad6548, U502)
IC. The interface features low-voltage digital interface buffers compatible with logic levels from 1.6V to 2.9V. Figure 3.2 AD6548 Block Diagram LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 18 - Only for training and service purposes...
Page 18: Only For Training And Service Purposes
2. Internally connected as Synth supply (Counters + SDM + Charge pump) 3. Supply regulated by internal LDO2 and should not be connected to any other supply Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only...
Page 19: 26 Mhz Clock (Crystal, X500)
26MHz crystal. Dedicated control software ensures excellent frequency stability under all circumstances. X500 26MHz DSX321G-26M Figure 3.4 CRYSTAL CIRCUIT DIAGRAM LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 20 - Only for training and service purposes...
Page 20: Baseband Processor (Ad6726, U102)
• GSM 900/850 power classes 4 and 5, • DCS 1800 power classes 1 and 2, and • DCS 1900 power classes 1 and 2 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 21 -...
Page 21: Only For Training And Service Purposes
3. TECHNICAL BRIEF Figure 3.5 SYSTEM INTERCONECTION OF AD6726 EXTERNAL INTERFACE LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 22 - Only for training and service purposes...
Page 22: Only For Training And Service Purposes
Select 16bits or 8bits interface mode for MAIN LCD. For the future 2V8_AIT_CAM 2.8V voltage is supplied to LCD driver IC. Table 3.5.B LCD CONTRON SIGNALS DISCRIPTION Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 23 - Only for training and service purposes...
Page 23: Only For Training And Service Purposes
S_EN (GPO 19) PLL Enable/Disable S_DATA (GPO 20) Serial Data to PLL Table 3.5.C RF CONTROL SIGNALS DESCRIPTION LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 24 - Only for training and service purposes...
Page 24: Only For Training And Service Purposes
SIM_DATA SIM_CLK GND4 GND1 GND3 GND2 C402 C401 C403 C404 220n 1000p Figure 3.5.D2 SIM Interface of AD6726 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 - Only for training and service purposes...
Page 25: Only For Training And Service Purposes
- Output current: Max 400mA 6. Battery - Li-ion battery (Max 4.2V, Nom 3.7V) - Standard battery: Capacity - 900mAh LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 26 - Only for training and service purposes...
Page 26: Only For Training And Service Purposes
USB_BYP _CHG _CHG IVDC _CHG_EN IMIN IUSB C244 C245 C246 C247 C248 Figure 3.5.F1 CIRCUIT FOR BATTERY CHARGING Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 27 - Only for training and service purposes...
Page 27: Display And Interface
• 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. - 28 - Only for training and service purposes...
Page 28: Only For Training And Service Purposes
L_DATAOUT03 L_DATA10 L_DATAOUT10 L_DATA02 L_DATAOUT02 L_DATA09 L_DATAOUT09 L_DATA01 L_DATAOUT01 L_DATA08 L_DATAOUT08 L_DATA00 L_DATAOUT00 Figure 3.6 LCD INTERFACE CIRCUIT Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 - Only for training and service purposes...
Page 29: Camera Interface(Ait701G, U301)
YCbCr is real data interface signal. Figure 3.7.1 AIT701G BLOCK DIAGRAM Figure 3.7.2 SENSOR CHIP BLOCK DIAGRAM LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 30 - Only for training and service purposes...
Page 30: Only For Training And Service Purposes
PDCLK C_MCLK C308 1000p 13M_AIT PMCLK PPXL_CLK C_PCLK VDD_IO0 VDD_IO1 GND_IO0 GND_IO1 C309 C310 Figure 3.7.3 AIT701G CIRCUIT Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 - Only for training and service purposes...
Page 31: Keypad Switches And Scanning
VA403 ICVN0505X150FR R422 KEY_COL0 R424 KEY_COL1 R425 KEY_COL2 R426 KEY_COL3 R427 KEY_COL4 Figure 3.8 Keypad Switches and Scanning LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 32 - Only for training and service purposes...
Page 32: Microphone
SPOB-413S44-RC10BC VINNORN R221 100ohm CLOSE TO ABB R223 C227 C228 2.2K Figure 3.9 Connection between Microphone and AD6726 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...
Page 33: Main Speaker
AMP_SHDN _SHUTDOWN SPK_OUT_P BYPASS R208 100K C212 220n C213 R209 Figure 3.10 Connection between Speaker, Amp and AD6726 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 34 - Only for training and service purposes...
Page 34: Headset Interface
FB801 1800 C232 FB802 1800 HS_OUT_R IO_P6 C233 C234 IO_P7 JACK_DETECT R230 RPWRON Figure 3.11 HEADSET JACK INTERFACE Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 - Only for training and service purposes...
Page 35: Key Back-Light Illumination
R412 C408 R413 R414 LD400 LD401 LD402 LD403 LD404 LD405 KEY_BACKLIGHT VA401 ICVN0505X150FR Figure 3.12 KEY BACK-LIGHT ILLUMINTION LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 36 - Only for training and service purposes...
Page 36: Lcd Back-Light Illumination
R312 1.5K LCD_DIM_CTRL EN_SET MLED1 R313 C314 C315 MLED2 100K C316 C317 Figure 3.13 MAIN LCD BACKLIGHT ILLUMINATION Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 - Only for training and service purposes...
Page 37: Vibrator
VBAT VIBRATOR KDS114E J401 D400 C409 R420 (50V,J,NP0) Q400 R421 VIBRATOR KTC4075E R423 (1608) 100K Figure 3.14 Vibrator LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 38 - Only for training and service purposes...
Page 38: Battery Charging
USB_BYP _CHG _CHG IVDC _CHG_EN IMIN IUSB C244 C245 C246 C247 C248 Figure 3.15 CIRCUIT FOR BATTERY CHARGING Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 - Only for training and service purposes...
Page 39: Trouble Shooting
PAM +ASM (SKY77518) U501 (AD6548) RF Main Chip (Transceiver) X500 Crystal, 26MHz Clock FL500 SAW Filter SW500 Mobile Switch LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 40 - Only for training and service purposes...
Page 40: Rx Trouble
Crystal Circuit (2) Check Mobile SW &ASM (3) Check RX I/Q Signal Re-download SW or Do calibration again Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 41 - Only for training and service purposes...
Page 41: Only For Training And Service Purposes
R706 Mobile SW Change X500 CIRCUIT R706 R514 2V75_VVCXO C512 0.1u C513 0.1u WAVEFORM Graph 4.2.1(b) Graph 4.2.1(a) LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 42 - Only for training and service purposes...
Page 42
VBAT EGSM RX C508 C510 0.01u Tx_EN DCS_RX VBATT GSM_RX GND9 U501 V_LOGIC Graph 4.2.2 ASM Control Signal Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 43 - Only for training and service purposes...
Page 43: Only For Training And Service Purposes
RX Stand alone Mode is needed Tx_EN refer to chapter 10 GSM Rx DCS Rx GSM Tx DCS Tx LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 44 - Only for training and service purposes...
Page 44: Only For Training And Service Purposes
Check if there is any Similar? Replace U502 Major difference Refer to graph 4.2.3 Redownload software and calibration again Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 45 - Only for training and service purposes...
Page 45: Tx Trouble
Mobile SW & FEM (3)Check PAM control signal (4)Check TX I/Q Signal Redownload SW or Do calibration again LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 46 - Only for training and service purposes...
Page 46: Only For Training And Service Purposes
Mobile SW R706 Change X500 CIRCUIT R706 R514 2V75_VVCXO C512 0.1u C513 0.1u WAVEFORM Graph 4.2.1(a) Graph 4.2.1(b) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 47 - Only for training and service purposes...
Page 47: Only For Training And Service Purposes
VBAT EGSM RX C508 C510 0.01u Tx_EN DCS_RX VBATT GSM_RX GND9 U501 V_LOGIC Graph 4.2.2 ASM Control Signal LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 48 - Only for training and service purposes...
Page 48: Only For Training And Service Purposes
RF Cable disconnected Input Control Bits Mode Vlogic Tx_EN GSM Rx DCS Rx GSM Tx DCS Tx Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 49 - Only for training and service purposes...
Page 49: Only For Training And Service Purposes
Any Major Difference or not Any Major Difference or not ¨ ¨ Refer to Graph 4.3.3 Go to Next Step LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 50 - Only for training and service purposes...
Page 50: Only For Training And Service Purposes
Check if there is Replace U502 Similar? Any Major Difference Refer to Graph4.3.4 Re-download the Software And calibrate Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 51 - Only for training and service purposes...
Page 51: Power On Trouble
CLKOUT_GATE 100K MCLKEN CLKOUT MCLK PWRON D101 KDS114E DBBON GPIO_48 R109 100K NRESET _RESET R112 3300 RESET2P8 NC22 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 52 - Only for training and service purposes...
Page 52: Only For Training And Service Purposes
Replace U100 and Re-download software Does it work properly? The phone will Replace the main board Properly operating. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 53 - Only for training and service purposes...
Page 53: Charging Trouble
C305 C306 C307 VUSB _PPR _PPR USB_BYP _CHG _CHG IVDC _CHG_EN IMIN IUSB C244 C245 C246 C247 C248 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 54 - Only for training and service purposes...
Page 54: Only For Training And Service Purposes
C245 = 6.4V ? Resolder the Are U300,FL201 U300, FL201 well-soldered? Replace the Battery is charged? U205 Charging is properly operating Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 55 - Only for training and service purposes...
Page 55: Vibrator Trouble
Figure 4.6 CIRCUIT VBAT VIBRATOR KDS114E J401 D400 C409 R420 (50V,J,NP0) Q400 R421 VIBRATOR KTC4075E R423 (1608) 100K LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 56 - Only for training and service purposes...
Page 56: Only For Training And Service Purposes
Of D400,R420 Reassembly or Check the contact Replace vibrator of vibrator ? Replace vibrator Vibrator Working well ! Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 57 - Only for training and service purposes...
Page 57: Lcd Trouble
4. TROUBLE SHOOTING 4.7 LCD Trouble TEST POINT CN400 U301 Figure 4.7 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 58 - Only for training and service purposes...
Page 58: Only For Training And Service Purposes
L_DATAOUT14 R315 LCD_RESET LCD_RESET_OUT L_DATA13 L_DATAOUT13 100ohm L_DATA12 L_DATAOUT12 C706 L_DATA11 L_DATAOUT11 L_DATA10 L_DATAOUT10 L_DATA09 L_DATAOUT09 L_DATA08 L_DATAOUT08 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 59 - Only for training and service purposes...
Page 59: Only For Training And Service Purposes
Check the soldering of Resoldering FL304,FL305 LCD Line ? Does LCD work Replace LCD module properly ? LCD working well ! LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 60 - Only for training and service purposes...
Page 60: Camera Trouble
4. TROUBLE SHOOTING 4.8 Camera Trouble TEST POINT U400(AIT701G) U301 Figure 4.8 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 61 - Only for training and service purposes...
Page 61: Only For Training And Service Purposes
PSCK C_SCK _WAIT PHWAIT_ PDCLK C_MCLK C308 1000p 13M_AIT PMCLK PPXL_CLK C_PCLK VDD_IO0 VDD_IO1 GND_IO0 GND_IO1 C309 C310 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 62 - Only for training and service purposes...
Page 62: Only For Training And Service Purposes
Itís camera moduleís problem Replace the camera module Check the signals of the Resoldering the Filter FL302 Camera will work properly Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 63 - Only for training and service purposes...
Page 63: Speaker Trouble
BYPASS R208 100K C212 220n C213 R209 SPEAKER R203 SPK_OUT_N CN201 C206 R206 SPK_OUT_P C210 C211 17-8T-01PP SUSY0022601 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 64 - Only for training and service purposes...
Page 64: Only For Training And Service Purposes
R207,R204 Check the Power voltage Change the U201 U201 = VBAT And work properly ? Speaker Working well!! Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 65 - Only for training and service purposes...
Page 65: Sim Card Interface Trouble
2V85_VSIM 2V85_VSIM R401 J400 R402 SIM_RST SIM_DATA SIM_CLK GND4 GND1 GND3 GND2 C402 C401 C403 C404 220n 1000p LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 66 - Only for training and service purposes...
Page 66: Only For Training And Service Purposes
Does it work Does it work Properly? Properly? SIM card is properly working SIM card is properly working. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 67 - Only for training and service purposes...
Page 67: Earphone Trouble
R225 100K 100K R227 HS_OUT_L FB801 1800 C232 FB802 1800 HS_OUT_R IO_P6 C233 C234 IO_P7 JACK_DETECT R230 RPWRON LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 68 - Only for training and service purposes...
Page 68: Only For Training And Service Purposes
Or Change the U102 and try again the earphone? the earphone? Earphone will work properly Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 69 - Only for training and service purposes...
Page 69: Key Backlight Trouble
R409 R410 R411 R412 C408 R413 R414 LD400 LD401 LD402 LD403 LD404 LD405 KEY_BACKLIGHT VA401 ICVN0505X150FR Figure 4.12 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 70 - Only for training and service purposes...
Page 70: Only For Training And Service Purposes
Are all LEDs Check the soldering Working? each R and LED Replace or resolder Backlight will work properly. component Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 71 - Only for training and service purposes...
Page 71: Receiver Trouble
AOUT1N RCV_N AOUT2P1 C147 C148 AOUT2P2 AOUT2N1 AOUT2N2 AOUT3L AUXOP_L AOUT3R AUXOP_R C149 C150 C151 C152 SPK_P_ABB SPK_N_ABB LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 72 - Only for training and service purposes...
Page 72: Only For Training And Service Purposes
Change the U102 C147 and C148 fluctuate? Is receiver connected Resolder/Change the receiver Properly? Receiver will work properly. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 73 - Only for training and service purposes...
Page 73: Microphone Trouble
100ohm VINNORP MIC201 C221 C222 C223 0.1u SPOB-413S44-RC10BC VINNORN R221 100ohm CLOSE TO ABB R223 C227 C228 2.2K LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 74 - Only for training and service purposes...
Page 74: Only For Training And Service Purposes
Is it a few tens mV AC? Check the soldering of Resolder component C227,C228,C223 R219,R216 Microphone will work properly. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 75 - Only for training and service purposes...
Page 75: Rtc Trouble
PA_BAND GPIO_0 32.768KHz R106 C122 nFM_RESET GPIO_1 3.3M BT_CTS GPIO_2 VIBRATOR GPIO_3 BT_RTS GPIO_4 T_Detect GPIO_5 CAM_INT GPIO_6 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 76 - Only for training and service purposes...
Page 76: Only For Training And Service Purposes
R105 about 400mV? change the X100 Re-download software and try Is RTC properly working? again RTC will work properly Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 77 - Only for training and service purposes...
Page 77: Bluetooth (Kp175 Only)
BT_CTS TP604 RF_ACTIVE_GPIO4 UART_RXD DEBUG_TX TP605 BT_PRIORITY_STATUS_GPIO3 UART_TXD DEBUG_RX TX_CONFX_WLAN_ACTIVITY_GPIO2 TP606 BT_DBB_INT HOST_WAKE_USB_DETACH_GPIO_1 HUSB_DN TP607 DBB_BT_INT BT_WAKE_GPIO_0 HUSB_DP LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 78 - Only for training and service purposes...
Page 78: Only For Training And Service Purposes
_BT_RST check at TP600? U102 Bluetooth on is OK? Re-download SW and try again Bluetooth will work properly Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 79 - Only for training and service purposes...
Page 79: Fm Radio (Kp175 Only)
SI4702-C19-GM nFM_RESET _RST R701 C702 100K R702 100K C703 0.1u R703 R704 4.7K 4.7K FM_SCLK FM_SDATA R705 BT_32K LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 80 - Only for training and service purposes...
Page 80: Only For Training And Service Purposes
VGP at C700 Replace Check BT_32k at R705? U102 Replace FM_Radio work is good? U700 FM_radio will work properly Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 81 - Only for training and service purposes...
Page 81: Download
5. DOWNLOAD 5. DOWNLOAD 5.1 Download A. Download Setup Figure 5.1 describes Download setup Figure 5.1 Download Setup LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 82 - Only for training and service purposes...
Page 82
5. DOWNLOAD B. Multi Download Procedure 1. Run GSM Multi Download program and select Setting Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 83 - Only for training and service purposes...
Page 83
2. Select Configuration from the menu and you may see this window 3. Press key to select DLL file and press Open LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 84 - Only for training and service purposes...
Page 84
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 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 85 - Only for training and service purposes...
Page 85
8. Check if the ADI option is set to Hermes 9. Press OK to end Configuration Select Rate LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 86 - Only for training and service purposes...
Page 86
10. Press START to execute download 11. Once downloading is started, press STOP button to keep from re-downloading after downloading is completed. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 87 - Only for training and service purposes...
Page 87: Block Diagram
6. BLOCK DIAGRAM 6. BLOCK DIAGRAM i t l Figure 8.1 LG-KP175 Block Diagram LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 88 - Only for training and service purposes...
Page 88
6. BLOCK DIAGRAM i t l Figure 8.2 LG-KP170 Block Diagram Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 89 - Only for training and service purposes...
Page 89
LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 90 - Only for training and service purposes...
Page 90: Circuit Diagram
KEYON AOUT2N1 AOUT2N2 NC31 AOUT3L AUXOP_L NC32 AOUT3R AUXOP_R NC33 C149 C150 C151 C152 SPK_P_ABB SPK_N_ABB OJ100 OJ101 - 91 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 91
(18pin 6, 7) VUSB _PPR _PPR USB_BYP _CHG _CHG IVDC _CHG_EN IMIN IUSB C244 C245 C246 C247 C248 - 92 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 92
L_DATAOUT14 R315 LCD_RESET LCD_RESET_OUT L_DATA13 L_DATAOUT13 100ohm L_DATA12 L_DATAOUT12 C706 L_DATA11 L_DATAOUT11 L_DATA10 L_DATAOUT10 L_DATA09 L_DATAOUT09 L_DATA08 L_DATAOUT08 - 93 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 93
J402 AXA463062P T_DATA1 DAT1_2 DUMMY1 T_DATA0 DAT0 T_CLK T_CMD T_DATA3 CD_DAT3 DUMMY2 T_DATA2 DAT2 T_Detect DETECT_A DETECT_B DUMMY3 C419 - 94 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 94
CHANGE THIS DUAL SAW FILTER DCS1800 RX C527 C528 C529 TO PART_NO SFSB0001301 GSM 900 TX C530 DCS1800 TX - 95 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 95
BT_CTS TP604 RF_ACTIVE_GPIO4 UART_RXD DEBUG_TX TP605 BT_PRIORITY_STATUS_GPIO3 UART_TXD DEBUG_RX TX_CONFX_WLAN_ACTIVITY_GPIO2 TP606 BT_DBB_INT HOST_WAKE_USB_DETACH_GPIO_1 HUSB_DN TP607 DBB_BT_INT BT_WAKE_GPIO_0 HUSB_DP - 96 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 96
GND2 nFM_RESET _RST R701 C702 100K R702 100K C703 0.1u R703 R704 4.7K 4.7K FM_SCLK FM_SDATA R705 BT_32K - 97 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 97
- 98 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 98: Bga Ic Pin Check
8. BGA IC Pin Check 8. BGA IC Pin Check U102 AD6726 (EUSY0364401) Top View Not use Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 99 - Only for training and service purposes...
Page 99
8. BGA IC Pin Check U102 EUSY0288701 S71PL256NC0_TLA084 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 100 - Only for training and service purposes...
Page 100
8. BGA IC Pin Check U301 EUSY0318501 AIT701G Not use (NC Pin) Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 101 - Only for training and service purposes...
Page 101
8. BGA IC Pin Check U602 EUSY0350101 BCM2046SB1 Not use (NC Pin) LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 102 - Only for training and service purposes...
Page 102: Pcb Layout
9. PCB LAYOUT LD400~407 No KEY backlight MIC201 MIC No MIC for SPK phone - 103 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 103
U102 AD6726 Can’t boot the phone U502 AD6548 Tx, Rx Error U501 SKY77518 Tx Power FL500 B9308 Rx sensitivity - 104 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 104: Engineering Mode
Selection Cell Env. Backlight Battery (Ded) Audio Backlight Tuning Speaker UART Vibrator Setting Camera BT Test MicRcv Keypad Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 105 - Only for training and service purposes...
Page 105: Mf Mode [Menu 1]
This menu is to test the vibration mode. 1) Vibrator on : Vibration mode is on. 2) Vibrator off : Vibration mode is off. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 106 - Only for training and service purposes...
Page 106: Elt Mode [Menu 2]
This is NOT a necessary menu to be used by neither engineers nor users. 10.2.1 Automatic 10.2.2 Manual 10.3 Version [MENU 3] This displays software version stored in the phone. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 107 - Only for training and service purposes...
Page 107: Factory Reset [Menu 4]
3) MVBAT ADC : This displays Battery voltage ADC. 4) AUX ADC : This displays AUX ADC. 5) TEMPER ADC : This displays temperature ADC. LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 108 - Only for training and service purposes...
Page 108
4. test table 3 2. Downlink 1. aecCtrl 1. Enable / 2. Disable 2. aecCnfg 0x0000 ~ 0xFFFF Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 109 - Only for training and service purposes...
Page 109: Network Info [Menu 6]
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. - 110 - Only for training and service purposes...
Page 110: Stand Alone Test
- See if the value of RSSI is close to -16dBm when setting the value between 0 ~ 26 in Gain Control Index. - Normal phone should indicate the value of RSSI close to -16dBm. Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 111 -...
Page 111: Means Of Test
After setting them all above, press connect button. e. Press the start button Connect Button Figure 10.3.1 HW test program LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 112 - Only for training and service purposes...
Page 112
11. STAND ALONE TEST Figure 10.3.2 HW test setting Figure 10.3.3 Ramping profile Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 113 - Only for training and service purposes...
Page 113: Auto Calibration
PC (for Software Installation) Pentium II class above 300MHz Table 12.2.1 Calibration Equipment List. Figure 12.2.1 Equipment Setup LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 114 - Only for training and service purposes...
Page 114: Test Jig Operation
Indicate data transfer state through the UART port LED 4 Indicate data transfer state through the MON port Table 12-4 LED Description Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 115 - Only for training and service purposes...
Page 115: Procedure
TEST JIG, in general.) 2. Run Hot_Kimchi.exe to start calibration. 3. From the Calibration menu, Select KP175! KP175 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 116 - Only for training and service purposes...
Page 116
12. AUTO CALIBRATION 4. Press Calibration START KP175 KP175 Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 117 - Only for training and service purposes...
Page 117: Agc
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. - 118 - Only for training and service purposes...
Page 118: Exploded View & Replacement Part List
13. EXPLODED VIEW & REPLACEMENT PART LIST 13.1 EXPLODED VIEW 27 29 30 - 119 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 119
ASS'Y EXPLODED VIEW - 120 - Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...
Page 120: Replacement Parts
CUTTING, NS, , , , , Black Without MPBU00 PAD,CONNECTOR MPBU0041801 COMPLEX, (empty), , , , , Color Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 121 - Only for training and service purposes...
Page 121
TAPE MTAZ0219201 COMPLEX, (empty), , , , , Color Without MLAZ00 LABEL MLAZ0038301 PID Label 4 Array Color LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 122 - Only for training and service purposes...
Page 122: Main Component
ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP C112 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 123 - Only for training and service purposes...
Page 123
ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C146 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 124 - Only for training and service purposes...
Page 124
22 uF,10V ,M ,L_ESR ,2012 ,R/TP ,; , ,[empty] ,[empty] , C236 CAP,TANTAL,CHIP ECTH0001704 ,[empty] , ,2.2X1.25X1.2MM ,[empty] ,[empty] ,[empty] Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 125 - Only for training and service purposes...
Page 125
ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C401 CAP,CHIP,MAKER ECZH0001216 220 nF,10V ,K ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 126 - Only for training and service purposes...
Page 126
ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C604 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 127 - Only for training and service purposes...
Page 127
FL303 FILTER,EMI/POWER SFEY0010501 Pb-free FL304 FILTER,EMI/POWER SFEY0015201 SMD ,; ,; ,Filter,LCR FL305 FILTER,EMI/POWER SFEY0015201 SMD ,; ,; ,Filter,LCR LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 128 - Only for training and service purposes...
Page 128
39 Kohm,1/16W ,J ,1005 ,R/TP PCB ASSY,MAIN,PAD R203 SAFP0000401 SHORT R204 RES,CHIP,MAKER ERHZ0000405 10 Kohm,1/16W ,J ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 129 - Only for training and service purposes...
Page 129
4700 ohm,1/16W ,J ,1005 ,R/TP R303 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP R305 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 130 - Only for training and service purposes...
Page 130
PCB ASSY,MAIN,PAD R601 SAFP0000401 SHORT R602 RES,CHIP,MAKER ERHZ0000486 47 Kohm,1/16W ,J ,1005 ,R/TP PCB ASSY,MAIN,PAD R603 SAFO0000501 0OHM_1005_DNI OPEN Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 131 - Only for training and service purposes...
Page 131
VA208 VARISTOR SEVY0004101 5.6 V, ,SMD ,360pF, 1005 X100 X-TAL EXXY0016001 32.768 KHz,20 PPM,7 pF,65 Kohm,SMD ,6.9*1.4*1.3 , LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 132 - Only for training and service purposes...
Page 132
47 ohm,1/16W ,J ,1005 ,R/TP R408 RES,CHIP,MAKER ERHZ0000483 47 ohm,1/16W ,J ,1005 ,R/TP R409 RES,CHIP,MAKER ERHZ0000483 47 ohm,1/16W ,J ,1005 ,R/TP Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 133 - Only for training and service purposes...
Page 133
5.6 V, ,SMD ,360pF, 1005 VA401 VARISTOR SEVY0004101 5.6 V, ,SMD ,360pF, 1005 VA403 VARISTOR SEVY0004101 5.6 V, ,SMD ,360pF, 1005 LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved. - 134 - Only for training and service purposes...
Page 134: Accessory
100-240V ,5060 Hz,5.6 V,.4 A,CE ,AC-DC ADAPTOR ,; SSAD00 ADAPTOR,AC-DC SSAD0028801 ,85Vac~264Vac ,5.6V+/-0.8V ,400mA ,5060 , ,WALL 2P ,I/O CONNECTOR , Copyright © 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 135 - Only for training and service purposes...
Page 135
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