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LG KG190 Service Manual
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LG KG190 Service Manual

Personal cellular phone
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KG190
Version: 1B
Every care has been taken to ensure that contents of this service manual give an accurate representation
of the equipment. However, DARTS TECHNOLOGIES CORP. accepts no responsibility for inaccuracies
which may occur and reserves the right to make changes to the design without prior notice.
1

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Summary of Contents for LG KG190

  • Page 1 KG190 Version: 1B Every care has been taken to ensure that contents of this service manual give an accurate representation of the equipment. However, DARTS TECHNOLOGIES CORP. accepts no responsibility for inaccuracies which may occur and reserves the right to make changes to the design without prior notice.

  • Page 2: Table Of Contents

    CONTENTS 1. INTRODUCTION 1.1 Purpose of the Manual 1.2 Structure of the Manual 1.3 Servicing Responsibilities 2. LEVEL 2.5 SERVICE GUIDELINES 2.1 Introduction 2.2 Level of Repair Guidelines 2.3 Level of Repair Service Tools and Interfaces 2.4 Features 2.5 Mobile Unit Basic Kit 3.
  • Page 3 5.1.5. Spurious Emissions at Antenna Connector 5.1.6. Residual Peak Power 5.2 Rx Characteristics 5.2.1. Sensitivity 6. BLOCK DIAGRAM 6.1 KG190 Base band Hardware Typical application and Block Diagram 6.2 KG190 RF Block Diagram 7. KG190 PCB PLACEMENT 8. CIRCUIT DIAGRAM 9. SPPL list...
  • Page 4 IMPORTANT This document is intended for use by qualified service personnel only. Company Policy Our policy is of continuous development; details of all technical modifications will be included with service bulletins. While every endeavor has been made to ensure the accuracy of this document, some errors may exist. If any errors are found by the reader, please notified it to company...
  • Page 5 Warnings and Cautions Please refer to the phone’s user guide for instructions relating to operation, care and maintenance including important safety information. Note also the following: Warnings: 1. CARE MUST BE TAKEN ON INSTALLATION IN VEHICLES FITTED WITH ELECTRONIC ENGINE MANAGEMENT SYSTEMS AND ANTI–SKID BRAKING SYSTEMS.

  • Page 6: Introduction

    1.1. Purpose of the Manual This service manual contains the information and procedures required for installing, operating and servicing the LG GSM Personal Cellular Mobile Telephone system operating on GSM Digital Cellular Networks. 1.2. Structure of the manual The manual is structured to provide service engineering personnel with the following information and procedures: 1.

  • Page 7: Level 2.5 Service Guidelines

    2. LEVEL 2 SERVICE GUIDELINES 2.1. Introduction The document is intended to help you carry out repair up to Level 2 on the KG190 mobile phone. The repair for International version and Asian variants are identical unless otherwise noted, therefore the description herein is confined to KG190 only.
  • Page 8 Battery connector Pitch=2.5mm 3Pin PA08303 2285-3224-0000 Antenna Ass'y ( w Louder SPK) 2206-1110-0001 Receiver Panasonic - EASG1D501E2 2285-1187-A000 TOP CASE Ass'y LG Silver ( w LENS) 2211-DP18-1100 Deco. Plate for Side-L 2211-DP18-2100 Deco. Plate for Side-R 2211-SE18-0100 SIDEKEY 1 WAY...
  • Page 9 The exchanged faulty main boards shall be properly packed in a plastic bulk with the attached IMEI label and fault report and send back to DARTS Mobile Service Center for detailed repairs. Level 2 Part No. DARTS P/N Description SVC Level LG P/N 2281-1831-0000 PCB Main Board, ARX...
  • Page 10 ONLY THE QUALIFIED PERSONNEL SHALL BE LIABLE TO PERFORM THIS LEVEL OF REPAIRS UNDER THE SUPERVISION AND APPROVAL OF DARTS TECHNICAL TRAINER. Level 2.5 Part No. DARTS P/N Description SVC Level LG P/N 2221-1261-0002 LCM STN 128x128dot 26P LKC34TML8Y L2.5 220B-0010-0000 BACKUP BATT D4.8Xh1.4mm 0.06F XC414-II06 L2.5...

  • Page 11: Level Of Repair Service Tools And Interfaces

    SW D/L cable : 2.4. Features The LG Telephone Model KG190 is a high performance small, light handset for business and domestic use. The following features are provided: 1. Triple Codec which includes Half Rate / Full Rate and Enhanced Full Rate (EFR) speech codec.

  • Page 12: Mobile Unit Basic Kit

    2.5. Mobile Unit Basic Kit Figure 2.5.1 Mobile Unit Figure 2.5.2 Battery Pack Figure 2.5.3 Earphone Figure 2.5.4 Figure 2.5.5 AC Travel Charger...
  • Page 13 Figure 2.5.6 Software Download Cable Item Description Part Number Cellphone Standard Battery (Li-lon 720mAh) 220A-0307-1000 Earphone USB cable AC Travel Charger 2237-22T0-1003 Software Download Cable...

  • Page 14: Operating Instructions

    3. OPERATING INSTRUCTIONS 3.1. General This section provides a brief guide to the operation and facilities available on the telephone handset. Refer to the Operating Instruction supplied with the telephone for full operational information. 3.2. Liquid Crystal Display The telephone handset has a graphical chip on glass display. The following icons are available: Figure 3.1: Crystal Display 1.
  • Page 15 Essential indicators Indicates signal strength and alternate line service. Shows handset current battery charge strength. Indicates the phone keypad is locked. Indicates the profiles alert type is Ring Indicates the profiles alert type is vibration. Indicates the profiles alert type is vibration and ring. Indicates the profiles alert type is vibration then ring.

  • Page 16: Location Of Controls

    3.1. Location of Controls Hand-free kit connection Receiver Left side key MP3 key Selection key Send/Answer key Power on / End key Navigation key Microphone USB connector Antenna area Speaker Camera Battery Cover Figure 3.2: Location of Controls...

  • Page 17: Alpha Entry

    3.2. Alpha Entry 3.4.1. Character Set / Key Assignments There are 20 keys on KG190, including 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, *, #, SEND, END, Left-Soft-Key (LSK), Right-Soft-Key (RSK), 4-way Navigation Key. The following ID drawing is only used for Keypad Layout’s reference.
  • Page 18 Key Function List A. Power/End key. • Switch phone on and off. Also, ends a call or Exit from any function and back to Idle mode. B. Selection Key • The function of the keys depends on the text shown on the display above the keys. For example, Menu and Name in Idle mode.

  • Page 19: Public Man Machine Interface (Mmi)

    3.5. Public Man Machine Interface (MMI) 3.5.1. Reading the Phonebook Memory Location # <MEMORY LOCATION> # Leading zeros can be left out of the location number, e.g. 007 can be 7. 3.5.2. Features for Factory Service Features Description By 2945#*# to enter factory mode 1.

  • Page 20: Tips For Call Option

    3.5.3.Tips for Call Option A call can be connected to any single caller by pressing Option key. When user press Option key during active call, user can choose one of those functions from the list: Hold: put a call on. Retrieve: reconnect a holding call.

  • Page 21: Troubleshooting

    3.7. Troubleshooting The user is given the following information and advised to contact the dealer if the problems persist: Problem Cause Remedy Telephone will not Check that the battery pack is fully charged switch on and correctly connected to the telephone. Extremely short battery The network in use and the Avoid areas of poor reception.

  • Page 22: Assembly Instructions

    4. ASSEMBLY INSTRUCTIONS 4.1. Assembly Structure...

  • Page 23: Antenna Sub Assembly

    4.2. Antenna Base sub assembly 1. To add cmos rubber on antenna base 2. To add speaker on antenna base 3. To add speaker cover on antenna base 4. To add antenna metal plate on Antenna base...

  • Page 24: Pcb Sub Assembly

    4.3 PCBA sub assembly 1. To add RF shielding cover on PCBA 2. To add BB shielding cover on PCBA 3. To add LCM module on PCBA 4. To stick tape in LCM golden finger...
  • Page 25 5. To add metal dome on PCBA 6. To add CMOS on PCBA 7. To add antenna base on PCBA 8. To add LCM shielding on PCBA...

  • Page 26: Top Case Sub Assembly

    4.4 Top case sub assembly 1. To add receiver rubber and receiver on top case 2. To add Keypad on top case 3. To add mini-USB cap on bottom case 4. To stick lens on top case...

  • Page 27: Bottom Case Sub Assembly

    4.5 Bottom case sub assembly 1. To add battery connector on bottom case 2. To add vibrator on bottom case 3. To add Mic on bottom case 4. To add earphone cap on bottom case.

  • Page 28: Main Assembly

    5. To stick cmos lens on bottom case 4.6 Main assembly 1. To add PCBA sub assembly on top case sub assembly. 2. To add right side key on main assembly.
  • Page 29 3. To add left side key on main assembly. 4. To add bottom sub assembly on main assembly. 5. To add RF cap on Main assembly...
  • Page 30 6. To screw four screws 7. To add battery cover on main assembly.

  • Page 31: Technical Specification

    5 TECHNICAL SPECIFICATION 5.1. TX Characteristics All data is applicable to E-GSM900 and DCS1800 / PCS1900 except where stated. 5.1.1. Frequency Error ± 0.1 ppm max. relative to base station frequency. 5.1.2. Modulation Phase Error RMS: Equal to or less than 5° Peak: Equal to or less than 20°...

  • Page 32: Output Rf Spectrum Due To Switching Transients

    5.1.4. Output RF Spectrum due to Switching Transients Offset from Centre Maximum Level (dBm) Frequency (kHz) E-GSM 900 DCS 1800 PCS 1900 ±400 ﹣19 ﹣22 ﹣22 ±600 ﹣21 ﹣24 ﹣24 ±1200 ﹣21 ﹣24 ﹣24 ±1800 ﹣24 ﹣27 ﹣27 Measurement conditions for output RF spectrum measurements: Frequency Spen 0 Hz Measurement Bandwidth:...
  • Page 33 Frequency range Frequency offset Filter bandwidth Approx video bandwidth 100 kHz to 50 MHz 10 kHz 30 kHz 50 MHz to 500 MHz 100 kHz 300 kHz excl. relevant TX band: GSM 450: 450,4 MHz to 457,6 MHz; GSM 480: 478,8 MHz to 486 MHz, and the RX bands: For GSM 400 MS: 460,4 MHz to 467,6 MHz;...

  • Page 34: Residual Peak Power

    Frequency range Frequency offset Filter bandwidth Approx video bandwidth GSM 480: 478,8 MHz to 486 MHz > 6,0 MHz 100 kHz 300 kHz GSM 750: 777 MHz to 792 MHz GSM 850: 824 MHz to 849 MHz P-GSM: 890 MHz to 915 MHz E-GSM: 880 MHz to 915 MHz DCS: 1 710 MHz to 1 785 MHz PCS 1 900: 1 850 MHz to 1 910...

  • Page 35: Rx Characteristics

    5.2. Rx Characteristics 5.2.1. Sensitivity E-GSM 900 Full Rate Speech The reference sensitivity performance in terms of frame erasure, bit error, or residual bit error rates (whichever is appropriate) is specified in the following table, according to the propagation conditions. Propagation Conditions Propagation Conditions Channels...
  • Page 36 DCS 1800 Full Rate Speech The reference sensitivity performance in terms of frame erasure, bit error, or residual bit error rates (whichever is appropriate) is specified in the following table, according to the propagation conditions. Propagation Conditions Propagation Conditions Channels Propagation Conditions RA Static Conditions TUhigh...
  • Page 37 PCS 1900 Full Rate Speech The reference sensitivity performance in terms of frame erasure, bit error, or residual bit error rates (whichever is appropriate) is specified in the following table, according to the propagation conditions. Propagation Conditions Propagation Conditions Channels Propagation Conditions RA Static Conditions TUhigh...

  • Page 38: Block Diagram

    6 BLOCK DIAGRAM 6.1. KG190 Base band Hardware Typical application and Block Diagram Figure 6.1: Typical application of MT6217...
  • Page 39 Figure 6.2: MT6217 Block Diagram...

  • Page 40: Kg190 Rf Block Diagram

    6.2. KG190 RF Block Diagram Figure 6.3: MT6120 Block Diagram...
  • Page 43 BB_Main GPIO34_UR1_CTL_NONEUSE n,m(0603) R204 XOUT X201 32KHz URXD1 UCTS1 UCTS2 URXD2 RP202 U201-O DL_Q+ DL_Q- DL_I- DL_I+ UL_I+ UL_I- UL_Q- MISC SIM I/F SLCD I/F UL_Q+ VAPC U201-C VAFC K2 LPCE1 AFC_BP TP230 U201-S L5 LPCE0 MT6218B-17 LPCE0B MT6218B-17 C206 BACKENDRST L4 LRST JRTCK...
  • Page 44 Memory and Audio VMEM 3V 128+32Mb FLASH+(p) SRAM +NAND Flash ( THPV0578 Louder SPK R114 VBATBB C101 C113 100n 2.2u(0603 6.3V) U102 U101 LS101 GP01_OP_CTL /SHUTDOWN R125 0R(0603 1/10W) SPK18-2K0710 GND1 R120 EA[1:23] /ECS0_FLASH GND2 C115 R115 R126 WP/ACC VDD1 C114 100p G2 A0...
  • Page 45 PMIC and LED n,m<0R(0603 1/10W)> R415 RB160M-30(1A 30V) D402 VCHGI VBATBB T420 S401 PWRKEY VBATBB U402 KBR0 KBC4 R402 0R(0603 1/10W) R403 100K EMD6 KEYLED_PAIR1 U403 ALERTER_KEYLED_PAIR2 VBAS 32 PWRKEY /RESET /SYSRST BBWAKEUP 33 PWRBB RSTCAP VCHGI J402 31 SRCLKEN VCXO_EN CON-MINI-USB-2 F401...
  • Page 46 LCD and KEYPAD 4.7u (0603) 4.7u (0603) C309 C301 C304 C302 100n 2.2u (0603) KBC2 KBR0 B301 B302 KBC3 VBATBB VOUT 0R(0603 1/10W) 0R(0603 1/10W) U302 T303 T302 T301 GPIO3_LCM_BL_EN RT9362 2 CTRL0 LED1 LCM_BL_PWM 3 CTRL1 LED2 LED3 5 ISET LED4 4 AGND KBR1...
  • Page 47 CMOS 10 Y7 11 Y6 12 Y4 RP510 13 Y5 CM_D7 14 Y0 CM_D6 15 Y2 16 Y3 CM_D4 RP512 U502 CM_D5 17 Y1 VL_6X6_MODULE_SOCKET CM_D0 CM_D2 18 SIO_D FM_IO2V8 CM_D3 CM_D2V8 CM_A2V8 VCORE RP513 19 SIO_C CM_D1 VBATBB CM_I2C_DA 1 PWDN U501 CM_I2C_CK...
  • Page 48 VBAT R602 PA_EN R603 VAPC C602 C603 C601 R604 BANDSW_DCS 40 BS VRAMP L602 GND1GSM L603 DCSIN C604 31 DCSOUT GNDPAD R605 5dB GND6 C607 GND5 C608 R607 5dB U602 GND4 6 GSMOUT RF3146 GSMIN GND3 36 GND7 ANTENNA L607 SPRING-ARIZONA(POGO_PIN) GND2 38 GND8...
  • Page 49 F32K_FM LSCE0_FM_RST LSA0_FM_3WIRE_DATA LSCE1_FM_3WIRE_CE# LSCK_FM_3WIRE_CLK FM_ANT R708 EINT3_FMINT L701 AGND C701 C702 FMIP FMIN NC-1 FM_IO2V8 NC-2 U701 R706 0R NC-3 SI4700 NC-4 NC-5 R707 0R C703 AU_FMIN_R AU_FMIN_L...
  • Page 50 9. SPPL for LG – KG190 Version : 1A ITEM Darts P/No. SVC 여부 Description Mini. Q'ty Location LG part number Chip Set 2255-6217-3080 RISC PROCESSOR,TFBGA,282P U201 225K-T700-1080 BACKEND IC,TFBGA,96P,AIT700G/CN1-G U500 2257-6305-2080 DS,IC,POWER MANAGEMENT,QFN48,48PS U403 2259-RF31-2000 POWER AMPLIFIER RF3146 LFM 48P...
  • Page 51 T304,T401,T402, T403,T404,T420, T421,T422 2257-MLVS-2000 VCE MLVS0603K14 +-10% 14V 0603 T100,T103,T104 2265-3010-0582 LED R G B HT-372FCH-DT D401 2265-B040-0286 LED,L=B,AOT-0603P-B110-HS LED402~D407 EME -SMT 220B-0010-0000 BACKUP BATT D4.8xH1.4mm 0.06F XC414-II06E N401 221J-EP06-0988 EARPHONE JACK KM03011ABGS1 6P J101 220S-2010-0081 SWITCH,RF TEST SWITCH,6000MHz 2W J601 221C-SC06-0182 CONN.,SIM CARD CONN.,6PIN,217+010+606,ACT...
  • Page 52 2212-DM18-0000 DS,ME,METAL,DOME,ARI 2221-1341-0082 LCM,STN,128*128dot,26P,LKC34TML8Y2 2211-BA18-0100 BAT.COVER Accessory 220A-1800-7080 BATT PACK 2237-22T0-1003 TRV.CHARGER 2236-6620-4001 CABLE MINI CABLE 223A-0020-1080 HANDSFREE Service SW D/L CABLE 2281-18B5-0080 PCBA...

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