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LG KG110 Service Manual

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Download this manual See also: User Manual
KG110_Cover_Eng
2006.8.9
3:57 PM
Page 1
Service Manual
KG110/KG115/
MG110a/MG110b
Date : Aug 2006 / Issue 1.0
P/N : MMBD0061701

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  • Page 1 KG110_Cover_Eng 2006.8.9 3:57 PM Page 1 Service Manual KG110/KG115/ MG110a/MG110b Date : Aug 2006 / Issue 1.0 P/N : MMBD0061701...

  • Page 2: Table Of Contents

    D. Notice of Radiated Emissions ....................3 E. Interference and Attenuation ....................4 F. Electrostatic Sensitive Devices....................4 2. SYSTEM SPECIFICATION ......................6 3. TECHNICAL BRIEF ........................7 3.1 KG110 Block Diagram ......................7 3.2 RF Part Introduction ........................8 3.2.1 Receiver Part........................8 A.Low Noise Amplifiers........................9 B.Down-Converting Mixers......................9 C.Baseband Amplifiers / Low Pass Filters ................
  • Page 3 E. LDO Block ..........................18 3.3.3 Battery Charging Block ....................18 3.3.4 Display and Interface ......................20 3.3.5 Keypad Switches and Scanning ..................21 3.3.6 Microphone........................22 3.3.7 Soft-midi and Main Speaker ....................23 3.3.8 Headset Interface ......................24 3.3.9 Key Back-light Illumination ....................25 3.3.10 LCD Back-light Illumination ....................26 3.3.11 VIBRATOR........................26 4.

  • Page 4: Introduction

    1. INTRODUCTION 1. INTRODUCTION 1.1 Purpose This manual provides the information necessary to repair, calibration, description and download the features of KG110. 1.2 Regulatory Information A. Security Toll fraud, the unauthorized use of telecommunications system by an unauthorized part (for example, persons other than your company’s employees, agents, subcontractors, or person working on your company’s behalf) can result in substantial additional charges for...

  • Page 5: Interference And Attenuation

    1. INTRODUCTION E. Interference and Attenuation Phone may interfere with sensitive laboratory equipment, medical equipment, etc. Interference from unsuppressed engines or electric motors may cause problems. F. Electrostatic Sensitive Devices...
  • Page 6 1. INTRODUCTION 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 which is also grounded.

  • Page 7: System Specification

    2. SYSTEM SPECIFICATION 2. SYSTEM SPECIFICATION Item Target Specification Form Factor Bar Type Standard Battery (830mAh , Li-ion) Size : 34(W) X 50(H) X 4.5(T) mm Weight: 20g Size 102.8 X 44 X 16.5mm Weight 71 Gram(with standard battery) Standby Current Below 3.0 mA under the least current consumption (e.g.

  • Page 8: Technical Brief

    (TQM6M4003) Circuit Figure 3-1: KG110 Top Level Block Diagram The Figure 3-1 shows the top level block diagram of KG110, it contains RF and BB part. The following list is the detailed: 1. AD6720 : ADI baseband chipset, including Digital Base Band (DBB) and Analog Base Band ABB 2.TQM6M4003 : Triquint PAM and Ant Switch...

  • Page 9: Rf Part Introduction

    3. TECHNICAL BRIEF 3.2 RF Part Introduction The RF parts consists of a transmitter part, a receiver part, a voltage supply part, the crystal reference system. And the main RF Chipset AD6548 is a highly integrated direct conversion radio solution that combines, on a single chip, Quad Band Radio (GSM850,E-GSM,DCS1800 and PCS1900 and power management functions necessary to build the most compact GSM radio solution possible.

  • Page 10: A.low Noise Amplifiers

    3. TECHNICAL BRIEF VCC_TXVC TX Loop filter TXIB TXOP_HI RXIB TXOP_LO Band Tx_LO1 TX RF Output VCC_BBI Control EGSM/GSM850 In RX RF Input Tx_LO2 VCC_FE TX RF Input ESD- RX850 Diode VCC_BBQ RX850B Vmod_en RX900 DC Offset Vramp Logic Correction &...

  • Page 11: D.baseband Output D.c. Offset Correction

    3. TECHNICAL BRIEF The external capacitor is not required with ADI baseband ICs. The on chip filter has an auto calibration feature ensuring that the filters are tuned for optimum performance. The baseband amplifiers have programmable gain for system AGC. A total of 57 dB of gain control is provided in 3dB steps programmable over the serial interface.

  • Page 12: Power Amplifier Module

    3. TECHNICAL BRIEF A. Power Amplifier Module Figure 3-3: Power Amplifier Module The advanced quad-band Transmit Module designed for mobile handset applications provides full RF transmit functionality.The GSM850/900 and DCS/PCS power amplifier blocks including power control are combined with the low insertion loss quad-band pHEMT switch, Tx harmonics filtering, integrated switch decoder, four receive ports, and full ESD protection.

  • Page 13: C.phase Frequency Detector (Pfd)

    3. TECHNICAL BRIEF C. Phase Frequency Detector (PFD) The PFD ensures that the transmitted signal contains the required modulation and is accurately locked to the desired GSM channel. The downconverted feedback signal from the TXVCO and the Quadrature Modulator output are phase compared by the PFD. The PFD charge pump generates a current pulse proportional to the difference in phase which is applied to the loop filter.

  • Page 14: J.phase Frequency Detector/Charge Pump

    3. TECHNICAL BRIEF prescaler, integer M & A dividers, and fractional N system based on sigma-delta modulation to generate the required fractional divide ratio. The Denominator of the fractional divider can be set to 3 different values, (1040, 1170, 1235), depending on the mode of operation. For example a denominator of 1040 with an input fraction F maintains an average value of F/1040 allowing 25 kHz steps when operated at a reference of 26 MHz.

  • Page 15: Power Management

    3. TECHNICAL BRIEF 3.2.4 Power Management For direct battery supply connect, and to reduce external circuitry complexity the AD6548/9 features three Low Drop Out Regulators (LDOs). The three LDOs provide isolation of the oscillators and sensitive circuits from unwanted power supply and cross coupled noise. They also ensure the IC operation is robust over a wide range of power supply voltages.

  • Page 16: Baseband Introduction

    3. TECHNICAL BRIEF 3.3 Baseband Introduction 3.3.1 Baseband Processor (AD6720 , U101) • AD6720 is an ADI designed processor • AD6720 consists of 1. Control Processor Subsystem including: • 32-bit MCU ARM7TDMI Control Processor • 39 MHz operation at 1.8V •...

  • Page 17: Interconnection With External Devices

    3. TECHNICAL BRIEF 3.3.2 Interconnection with external devices A. RTC block interface Countered by external X-TAL The X-TAL oscillates 32.768KHz B. LCD module interface Signals Description L_MAIN_LCD_CS MAIN LCD driver chip enable. LCD_RESET This pin resets LCD module. LCD_WR Enable writing to LCD Driver. LCD_RD Enable reading to LCD Driver.

  • Page 18: Sim Interface

    3. TECHNICAL BRIEF Signals Description PA_EN (GPO16) PAM Enable/Disable S_EN (GPO19) PLL Enable/Disable S_DATA (GPO20) Serial Data to PLL S_CLK (GPO21) Clock to PLL Table 3-6. RF Control Signals Description D. SIM interface The AD6720 provides SIM Interface Module. The AD6720 checks status periodically during established call mode whether SIM card is inserted or not, but it doesn't check during deep Sleep mode.

  • Page 19: Ldo Block

    3. TECHNICAL BRIEF VSIM VSIM C321 R341 (1608) J300 2.2u SCK-6S-12PT-TF SIMRESET SIMDATAOP SIMCLK R345 Figure 3-5: SIM Interface of AD6720 E. LDO Block There are 8 LDOs in the AD6720. - VCORE : supplies Digital base band Processor core and AD6720 digital core - VMEM : supplies external memory and the interface to the external memory on the digital base band processor (1,8V or 2.8V, 150mA) - VEXT : supplies Radio digital interface and high voltage interface (2.8V, 170mA)
  • Page 20 3. TECHNICAL BRIEF - If AD6720 detects that Charger is inserted, the CC-CV charging starts. - Exception : When battery voltage is lower than 3.2V, the precharge (low current charge mode) starts firstly. - And the battery voltage reach to 3.2V the CC-CV charging starts. 3.

  • Page 21: Display And Interface

    3. TECHNICAL BRIEF VCHARGE VBAT VRTC R111 GPO_5 LIGHT1 LIGHT1 R106 LIGHT2 LIGHT2 KEY BOARD_BACKLIGHT LIGHT3 C150 C129 R105 GPO_22 D100 R122 GPO_23 DISP_LIGHT 4.7u C131 C127 VMEMSEL CUS02 (1%) C126 1u 0.1u C128 1u REFOUT TEMP1 TEMP2 AUXADC1 HOOK_DETECT AUXADC2 VRTC VCHG...

  • Page 22: Keypad Switches And Scanning

    3. TECHNICAL BRIEF LCD CONNECTER VMEM VMEM FL302 ICVE21054E250R401FR _LCD_RESET INPUT_B1 INPUT_A1 R301 DATA0 INPUT_B2 INPUT_A2 DATA1 INPUT_B3 INPUT_A3 DATA2 INPUT_B4 INPUT_A4 CN301 DATA3 INPUT_A4 INPUT_B4 DATA4 INPUT_A3 INPUT_B3 DATA5 INPUT_A2 INPUT_B2 DATA6 INPUT_A1 INPUT_B1 LCD_LED_CTL ICVE21054E250R401FR1 R302 LIGHT2 FL302 FL303 LIGHT1 R343...

  • Page 23: Microphone

    3. TECHNICAL BRIEF VBAT R200 SW20 R209 KEY ON POWER KEYPAD KEY _COL0 KEY _COL1 KEY _COL2 KEY _COL3 KEY _COL4 SW20 RIGHT LEFT DOWN R205 KEY _ROW0 MENU R206 KEY _ROW1 SW10 SW11 SW12 S2(OK) R207 KEY _ROW2 SW13 SW14 SW15 SW16...

  • Page 24: Soft-Midi And Main Speaker

    3. TECHNICAL BRIEF VMIC CLOSE TO MIC R264 C261 C262 R265 2.2K R262 R261 VINNORP MIC200 C263 C264 OB4-15L42-C33L R263 C265 NNORN 0.1U R266 C266 C267 2.2K Figure 3-9: Connection Between Microphone And AD6720 3.3.7 Soft-midi and Main Speaker The TTPCom Embedded MIDI & Polyphonic Orchestra product, “TEMPO”, is a complete MIDI music player solution offering the following features: •...

  • Page 25: Headset Interface

    3. TECHNICAL BRIEF VBAT VEXT AUDIO SPK_RCV_SEL SELECT C280 C271 HIGH SPEAKER RECEIVER U202 MAX9718 U201 MAX4684EBC_T R275 SPK_P SPK_RCV_SEL OUT+ R276 SPK_N OUT- R271 AMP_SHDN RCV_P SPK_RCV_P SHDN BIAS COM1 R272 AMP_SHDM RCV_N SPK_RCV_N SHDM COM2 C277 R280 (FOR TUNING NOISE) 0.1u R283 RC201...

  • Page 26: Key Back-Light Illumination

    3. TECHNICAL BRIEF VMEM VMEM VMIC EAR JACK C231 VMEM VMIC_N VMEM VMEM R232 R231 100K R233 VMIC_ON C233 R235 C232 R234 U204 NLAST4599DFT2G R238 R236 R237 VIN- R239 2.2K HOOK_DETECT VIN+ C234 C235 U205 LMV7291MGX-NOPB R240 510K J200 C236 10u R241 HEADSET_SPK_P R242...

  • Page 27: Lcd Back-Light Illumination

    3. TECHNICAL BRIEF 3.3.10 LCD Back-light Illumination LCD backlight LEDs is controlled by AD6720 via AAT3110, U300. CHARGE PUMP VBAT U300 FB301 AAT3110IGU-5_T1 LCD_LED_CTL VOUT C323 _SHDN C325 C324 R346 DISP_LIGHT R347 Figure 3-13: Main LCD Backlight Illumination 3.3.11 VIBRATOR The vibrator is placed in the folder cover and contacted to LCD MODULE.
  • Page 28 3. TECHNICAL BRIEF VBAT VIBRATOR R305 VIB301 VIB302 R308 Q301 1.5K R307 VIBRATOR 2SC5585 R306 100K Figure 3-14: Vibrator Circuit...

  • Page 29: Trouble Shooting

    4. TROUBLE SHOOTING 4. TROUBLE SHOOTING 4.1 RF components SW400 FL403 FL401 FL402 U401 U402 Y400 Figure 4-1 Table 4-1 Reference Description Reference Description U401 Power Amplifier module FL401 SAW filter GSM&DCS U402 Transceiver IC chip FL402 SAW filter PCS Y400 Crystal FL403...

  • Page 30: Rx Trouble

    4. TROUBLE SHOOTING 4.2 RX Trouble Redowload SW, CAL Start HP8960: test mode 5. Check RX I/Q Signal 62CH 7 level setting (TCH) 62CH -60dBm setting (BCCH) Spectrum Analyzer setting Oscilloscope setting 4. Check SAW Filter circuit 1. Check crystal circuit 3.

  • Page 31: Check Crystal Circuit

    4. TROUBLE SHOOTING 4.2.1 Check Crystal Circuit VCTCXO Circuit is OK 26MHz ok? See next Page to Check ANT SW & Mobile SW Change Y400 26MHz signal Graph 4-1 Crystal pin1 Figure 4-3 Graph 4-2 AD6548 VLDO3 TXOP_LO TXOP_HI RX850 RX850B VCC_TXVCO RX900...

  • Page 32: Check Control Signal

    4. TROUBLE SHOOTING 4.2.2 Check Control Signal Check S_DATA Level is high? Download the SW Check S_EN, S_CLK, Check if there is any major different. Refer Download the SW Similar? to Graph 4-3 Control Signal is OK, See next page to check ANT SW &...

  • Page 33: Check Mobile Sw & Ant Sw

    4. TROUBLE SHOOTING 4.2.3 Check Mobile SW & ANT SW Check Mobile SW SW400 SW400.ANT KMS-507 L410 3.3nH SW400.RF C403 1.2P L411 2.2nH L412 47nH C440 Figure 4-5 Check ANT feed point, Tightly? Press ANT tightly If ANT touch PCB tightly Check mobile SW port: SW400.ANT .
  • Page 34 4. TROUBLE SHOOTING Check ANT SW R427 R418 C441 C444 C445 C446 Vmod_en Figure 4-6 Control Voltage Operating Mode Vmod_en Vbs1 Vbs2 TX GSM 850/900 TX DCS/PCS Sleep Mode Figure 4-6 Check R418,R427 Check whether Ant SW Vmod_en = H? Change the board Set as RX mode Vtx = L?

  • Page 35: Check Saw Filter

    4. TROUBLE SHOOTING 4.2.4 Check SAW filter C441 FL401 ~C446 FL403 FL402 Figure 4-7 F L403 856441 C441 100P C 442 L408 33nH C 443 C 415 FL401 856520 L401 C444 100P 18nH G_01 G_I N G_02 C 416 C445 100P D _01 D _I N...

  • Page 36: Check I/Q Signal

    4. TROUBLE SHOOTING 4.2.5 Check I/Q signal C421 C433 C421 C433 Figure 4-8 Check C433,C421 Check if there is any Replace U101 Similar ? Major Different ? Refer to Graph 4-4 Redownload Software and Calibration Q signal I signal Graph 4-4...

  • Page 37: Tx Trouble

    4. TROUBLE SHOOTING 4.3 TX Trouble Redowload SW, CAL start HP8960: test mode 5. Check ANT SW 62CH 7 level setting (TCH) & Mobile SW 62CH -60dBm setting (BCCH) Spectrum Analyzer setting Oscilloscope setting 4. Check PAM Control signal 1. Check crystal circuit 3.

  • Page 38: Check Crystal Circuit

    4. TROUBLE SHOOTING 4.3.1 Check Crystal Circuit VCTCXO Circuit is OK 26MHz ok? See next Page to Check ANT SW & Mobile SW Change Y400 26MHz signal Graph 4-5 Crystal pin1 Figure 4-10 Graph 4-6 AD6548 VLDO3 TXOP_LO TXOP_HI RX850 RX850B VCC_TXVCO RX900...

  • Page 39: Check Control Signal

    4. TROUBLE SHOOTING 4.3.2 Check Control Signal Check S_DATA Level is high? Download the SW Check S_EN, S_CLK, Check if there is any major different. Refer Similar? Download the SW to Graph 4-7 Control Signal is OK, See next page to check TX IQ signal S DATA S CLK...

  • Page 40: Check Tx I/Q Signal

    4. TROUBLE SHOOTING 4.3.3 Check TX I/Q signal C421 C433 C433 C421 Figure 4-12 Check C433,C421 Check if there is any Similar ? Replace U101 Major Different ? Refer to Graph 4-8 See next page to check TX ramp control signal Q signal I signal Graph 4-8...

  • Page 41: Check Pam Control Signal

    4. TROUBLE SHOOTING 4.3.4 Check PAM control signal U401 TQM6M4003 GND1 GND2 GND3 VCC2 GND4 GND5 VCC1 Figure 4-13 Settin R418 Check Tx_ramp & TxEN Check if there is any Similar ? Replace U101 Major Different Refer to Graph 4-9 See next page to check TX ant SW &...

  • Page 42: Check Mobile Sw & Ant Sw

    4. TROUBLE SHOOTING 4.3.5 Check Mobile SW & ANT SW SW400.ANT SW400.RF L411 R418 Vtx L405 Vbs2 L406 Vbs1 R427 Vmod_en Figure 4-14 Table 4-3 Control Voltage Operating Mode Vmod_en Vbs1 Vbs2 TX GSM 850/900 TX DCS/PCS...
  • Page 43 4. TROUBLE SHOOTING For the test TX stand alone mode is needed Refer to chapter 11 (PL=11 for GSM, PL=2 for DCS) CheckR418,R427,L405, Vmod_en = H? Check whether Ant SW Change the board Vtx = H? Set as TX mode Vbs2 = L? ? Refer to Table 4-3 Check TX level of...

  • Page 44: Power On Trouble

    4. TROUBLE SHOOTING 4.4 Power On Trouble C116 C112 C127 C114 D101 Figure 4-15 Check the Phone with the following process.
  • Page 45 4. TROUBLE SHOOTING Start Battery Charge or Change Voltage>3.35V Battery Check the contact of Change Dome Power key or Dome Check the following pins of U101 C114=1.8V? Replace U101 C116=2.75V? C112=2.8V? C127=1.8V? Logic level of Pin3 of Download Software D101=High? Phone will power on...

  • Page 46: Charging Trouble

    4. TROUBLE SHOOTING 4.5 Charging Trouble R105 Q100 D100 CN302 Figure 4-16 VCHARGE VBAT VRTC R111 GPO_5 LIGHT1 LIGHT1 R106 LIGHT2 LIGHT2 KEY BOARD_BACKLIGHT LIGHT3 C150 C129 R105 GPO_22 D100 R122 GPO_23 DISP_LIGHT 4.7u C131 C127 VMEMSEL CUS02 (1%) C126 1u 0.1u C128 1u REFOUT...
  • Page 47 4. TROUBLE SHOOTING Start Resold the CN302 Pin 4,5: I/O connector CN302 is Charge input; Pin 12,19: well soldered? GND . Voltage at Anode of The TA is out of D100 is 5.2V? order. Change TA Resolder D100 D100 Q100 R105 are well soldered ? Q100 R105 Replace the Q100 Voltage across the R105 is...

  • Page 48: Download

    4. TROUBLE SHOOTING 4.6 Download Download with GSMULTI47 Firstly, run the “GSMULTI” shown as the following picture. Then turn the switch on the multidownloader to “ADI”. Then turn the switch on the multidownloader to “ADI”. Thereafter, you should configure the setting by press the tab “Setting -> Configuration”. Thereafter, you should configure the setting by press the tab “Setting->...
  • Page 49 4. TROUBLE SHOOTING Firstly, for initial download, you should choose the .dll file. Then choose the .mot file you want to download. The loader should be set as :Cmd.mo; According to you equipment configuration, please choose the right Baund rate your equipment support.

  • Page 50: Calibration

    4. TROUBLE SHOOTING 4.7 Calibration Calibration with Hotkimchi 4.7.1 Equipment Setup 4.7.2 Setup 1) Creating Main Folder...
  • Page 51 4. TROUBLE SHOOTING 2) Downloading Hotkimchi Execution Program 3) Directory Construction...
  • Page 52 4. TROUBLE SHOOTING 4) Creating Cal. Model folder 5) Cal. Model S/W Download(ex:B2000)
  • Page 53 4. TROUBLE SHOOTING 6) Directory Construction 7) Model Info_Db txt.file 7) Model Info_Db txt.file...
  • Page 54 4. TROUBLE SHOOTING 8) Organizing Info_Db txt file by models – ex:B2000 9) How to execute Hotkimchi Calibration Program...
  • Page 55 4. TROUBLE SHOOTING 10) How to Execute Hotkimchi Calibration Program-Model Choice 11) How to Execute Hotkimchi Calibration Program-Port check(display only ADI type’s)
  • Page 56 4. TROUBLE SHOOTING 12) How to Execute Hotkimchi Calibration Program-Finishing...

  • Page 57: Lcd Trouble

    4. TROUBLE SHOOTING 4.8 LCD Trouble 4.8.1 LCD Blue Screen or abnormal display R302,R303 CN301 FL302 FL303 FL304 FL305 FL306 Figure 4-17 Checking Flow Check Check the Can the PCB connection of Check LCD function of Change Main MCU or board power on CN301, whether itself, Is a good...

  • Page 58: Lcd Black Screen

    4. TROUBLE SHOOTING 4.8.2 LCD Black Screen R346 C323 U300 C324 Figure 4-18 Figure 4-18 Checking Flow Checking Flow Can the PCB Voltage at one Voltage at pin3 Voltage at pin 1 board power on point of C324 of U300 is equal of U300 is equal normally? equal to Vbat?

  • Page 59: Receiver Trouble

    4. TROUBLE SHOOTING CHARGE PUMP VBAT U300 FB301 AAT3110IGU-5_T1 LCD_LED_CTL VOUT C323 _SHDN C325 C324 R346 DISP_LIGHT R347 4.9 Receiver Trouble 4.9 Receiver Trouble R115 R280 R114 U101 CIRCUIT DIAGRAM CIRCUIT DIAGRAM R114 RCV_P C137 (RECEIVER) R115 RCV_N C139 C140...
  • Page 60 4. TROUBLE SHOOTING VBAT VEXT C280 AUDIO C271 U202 MAX9718 U201 MAX4684EBC_T C290 1u R275 SPK_P SPK_RCV_SEL OUT+ C291 1u R276 SPK_N OUT- R271 AMP_SHDN RCV_P SHDN BIAS COM1 SPK_RCV_P R272 AMP_SHDM RCV_N SHDM COM2 SPK_RCV_N R280 (FOR TUNING NOISE) C277 0.1u R283...
  • Page 61 4. TROUBLE SHOOTING CHECKING FLOW Set audio part at test equipment as PRBS or continuous wave, not echo set the audio volume max SPK_RCV_SEL is low?

  • Page 62: Speaker Trouble

    4. TROUBLE SHOOTING 4.10 Speaker Trouble R271 R272 U201 C290 C291 U202 Test point 1 Test point 2 CIRCUIT DIAGRAM CIRCUIT DIAGRAM VBAT VEXT C280 AUDIO C271 U202 MAX9718 U201 MAX4684EBC_T C290 1u R275 SPK_P SPK_RCV_SEL OUT+ C291 1u R276 SPK_N OUT- R271...
  • Page 63 4. TROUBLE SHOOTING SETTING: Connect PIF to the phone, and Power on.Enter The engineering mode,and set” Melody on” at Buzzer of BB test menu...

  • Page 64: Mic Trouble

    4. TROUBLE SHOOTING 4.11 MIC Trouble R264 C115 R265 R266 CIRCUIT DIAGRAM CIRCUIT DIAGRAM VMIC R264 CLOSE TO MIC C261 C262 R265 2.2K MIC200 R262 R261 VINNORP C263 C264 OB4-15L42-C33L R263 C265 VINNORN 0.1U R266 C266 C267 2.2K...
  • Page 65 4. TROUBLE SHOOTING CHECKING FLOW C266=~1.9V, C264=~0.5V...

  • Page 66: Earphone Trouble

    4. TROUBLE SHOOTING 4.12 Earphone Trouble R241 R244 C236 J200 R242 U204 CIRCUIT DIAGRAM VMEM VMEM VMIC C231 VMEM VMIC_N VMEM VMEM R232 R231 100K R233 EAR JACK VMIC_ON C233 R235 C232 R234 U204 NLAST4599DFT2G R238 R236 R237 VIN- R239 2.2K HOOK_DETECT VIN+...
  • Page 67 4. TROUBLE SHOOTING CHECKING FLOW S T A R T I n s e r t t h e e a r p h o n e t o t h e p h o n e E a r p h o n e d e t e c t p r o b l e m D o e s t h e a u d i o p r o f i l e o f p h o n e c h a n g e t o e a r p h o n e m o d e ?
  • Page 68 4. TROUBLE SHOOTING Earphone detect problem Earphone detect problem V o l ta g e a t R 2 4 2 = 0 V ? R e s o ld e r R 2 4 4 Y e s D o w n l o a d S /W R e p l a c e m a i n b o a r d Earphone sending path problem...

  • Page 69: Keypad Backlight Leds Trouble

    4. TROUBLE SHOOTING 4.13 KEYPAD Backlight LEDS Trouble Resistor Capacitor Figure 4-19 Figure 4-19 Checking Flow Checking Flow Are all keypad Enter into engine mode and Replace not working Backlight work Start backlight LEDs turn backlight on LEDs properly? working? Replace R/C and Check Vbat and Replace U101 or...

  • Page 70: Sim Trouble

    4. TROUBLE SHOOTING KEY BACKLIGHT VBAT (6 LIGHT) KEY BOARD_BACKLIGHT 4.14 SIM Trouble 4.14 SIM Trouble J300 Pin 1 Figure 4-20 Checking Flow Checking Flow The SIM is malfunctioned, Change the SIM card. START Voltage at pin1 of Check the Check the contact Change the SIM and Does the SIM...
  • Page 71 4. TROUBLE SHOOTING Circuit Digram SIM CONNECTOR VSIM VSIM R341 C321 J300 (1608) SCK-6S-12PT-TF 2.2u SIMRESET SIMDATAOP SIMCLK R345...

  • Page 72: Appendix

    5. Appendix 1. BOM <Main component> Location Level Part Name Part Number Spec SAFY00 PCB ASSY,MAIN SAFY0178601 KG110 (ATOM) PCB ASSY,MAIN SAFB00 SAFB0064001 KG110 ATOM ASSY,MAIN,INSERT ANTENNA,GSM,FIXED SNGF0018401 5 ,-7 dBd, ,Internal, Triple(GSM900+DCS1800+PCS1900), Pb Free ,; ,TRIPLE , , , BAT01...
  • Page 73 5. APPENDIX-BOM Location Level Part Name Part Number Spec C123 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C124 CAP,CERAMIC,CHIP ECCH0006201 4.7 uF,6.3V ,K ,X5R ,TC ,1608 ,R/TP C125 CAP,CHIP,MAKER ECZH0003202 1 uF,6.3V ,Z ,Y5V ,HD ,1005 ,R/TP C126 CAP,CHIP,MAKER ECZH0003202 1 uF,6.3V ,Z ,Y5V ,HD ,1005 ,R/TP...
  • Page 74 5. APPENDIX-BOM Location Level Part Name Part Number Spec C261 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C262 CAP,TANTAL,CHIP,MAKER ECTZ0005201 10 uF,6.3V ,M ,L_ESR ,1608 ,R/TP C263 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C264 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C265 CAP,CERAMIC,CHIP ECCH0000167 0.1 uF,6.3V,K,X5R,HD,1005,R/TP C266 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C267...
  • Page 75 5. APPENDIX-BOM Location Level Part Name Part Number Spec C415 CAP,CERAMIC,CHIP ECCH0000126 68 pF,50V,J,NP0,TC,1005,R/TP C416 CAP,CERAMIC,CHIP ECCH0000126 68 pF,50V,J,NP0,TC,1005,R/TP C417 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C418 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C421 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C422 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C423 CAP,CERAMIC,CHIP ECCH0000167 0.1 uF,6.3V,K,X5R,HD,1005,R/TP...
  • Page 76 5. APPENDIX-BOM Location Level Part Name Part Number Spec FL401 FILTER,SAW,DUAL SFSB0000801 942.5 MHz,35 MHz,2.3 dB,21 dB,1842.5 MHz,75 MHz,2.4 dB,12 dB,2.5*2.0*0.76 ,SMD ,Pb-free_Dual( GSM900+DCS1800 Rx) ,; ,942.5MHz_1842.5MHz ,2.5*2. 0*0.76 ,SMD ,[empty] J200 CONN,JACK/PLUG,EARP ENJE0002301 3,5 PIN,G7000 EAR JACK 3 pole, 5 HONE pin KSD J300...
  • Page 77 5. APPENDIX-BOM Location Level Part Name Part Number Spec R124 RES,CHIP ERHY0000265 20K ohm,1/16W,J,1005,R/TP R190 RES,CHIP ERHY0000280 100K ohm,1/16W,J,1005,R/TP R200 RES,CHIP ERHY0000261 10K ohm,1/16W,J,1005,R/TP R205 RES,CHIP ERHY0000237 680 ohm,1/16W,J,1005,R/TP R206 RES,CHIP ERHY0000237 680 ohm,1/16W,J,1005,R/TP R207 RES,CHIP ERHY0000237 680 ohm,1/16W,J,1005,R/TP R208 RES,CHIP ERHY0000237 680 ohm,1/16W,J,1005,R/TP...
  • Page 78 5. APPENDIX-BOM Location Level Part Name Part Number Spec R314 RES,CHIP ERHY0000280 100K ohm,1/16W,J,1005,R/TP R315 RES,CHIP ERHY0000280 100K ohm,1/16W,J,1005,R/TP R316 RES,CHIP ERHY0000280 100K ohm,1/16W,J,1005,R/TP R317 RES,CHIP ERHY0000213 47 ohm,1/16W,J,1005,R/TP R318 RES,CHIP ERHY0000213 47 ohm,1/16W,J,1005,R/TP R319 RES,CHIP ERHY0000220 100 ohm,1/16W,J,1005,R/TP R320 RES,CHIP ERHY0000213 47 ohm,1/16W,J,1005,R/TP...
  • Page 79 26 MHz,10 PPM, pF, ohm,SMD ,3.2*2.5*0.7 ,temporary spec, W-191-451 ,; ,26 ,10PPM , , , ,SMD , R/TP SAFD00 PCB ASSY,MAIN,SMT SAFD0079901 KG110 (ATOM) PCB ASSY,MAIN,SMT TOP C221 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C222 CAP,CERAMIC,CHIP ECCH0004904...

  • Page 80: Mechanic Component

    5. APPENDIX-BOM Location Level Part Name Part Number Spec C223 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C224 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C225 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C226 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP...

  • Page 81: Exploded View

    APEY00 PHONE APEY0324301 KG110 PHONE BLACK ACGK00 COVER ASSY,FRONT ACGK0077501 KG110 FRONT ASSY BLACK CAP,EARPHONE MCCC00 JACK MCCC0038601 KG110 EARPHONE JACK CAP BLACK MCJK00 COVER,FRONT MCJK0061901 KG110 FRONT COVER(PC) BLACK MDAG00 DECO,FRONT MDAG0022201 KG110 FRONT DECO(PC) BLACK MPBG00 PAD,LCD MPBG0049501...

  • Page 83: Circuit Diagram

    TDO_1 SPK_N USC6 USC6 TCK_ABB C141 C142 Section Date Sign & Name Sheet/ Sheets KG110 MODEL 06/05/30 Designer Guo Peng Checked DRAWING AD6720,MEMORY NAME Approved DRAWING Ver 1.0 LG Electronics Inc. Iss. Notice No. Date Name LG(42)-A-5505-10:01 LG Electronics Inc.
  • Page 84 C274 R266 C266 C267 2.2K KEYBOARD_BACKLIGHT Section Date Sign & Name Sheet/ Sheets KG110 MODEL 06/05/30 Cai Xinchao Designer Checked DRAWING AUDIO, MMI NAME Approved DRAWING Ver 1.0 LG Electronics Inc. Iss. Notice No. Date Name LG(42)-A-5505-10:01 LG Electronics Inc.
  • Page 85 Q300 100K UMX1NTN Section Date Sign & Name Sheet/ Sheets KG110 MODEL Liang Bing Designer 06/05/30 Checked DRAWING CONNECT, CHARGE PUMP, SIM, VIB NAME Approved DRAWING Ver 1.0 LG Electronics Inc. Iss. Notice No. Date Name LG(42)-A-5505-10:01 LG Electronics Inc.
  • Page 86 Date Sign & Name Vbs1 Vbs2 Sheet/Sheets MODEL KG110 TX GSM 850/900 Designer 06/05/30 Lang Xian li TX DCS/PCS Checked DRAWING NAME Approved Sleep Mode DRAWING Iss. Notice No. Date Name Ver 1.0 LG Electronics Inc. LGIC(42)-A-5505-10:01 LG Electronics Inc.

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