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LG KG190, Service Manual, Page: 4 / 52

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LG KG190 Service Manual Download Page 4

       

 

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 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Summary of Contents for KG190

Page 1: ...re 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: ...General 3 2 Liquid Crystal Display 3 3 Location of Controls 3 4 Alpha Entry 3 4 1 Character Set Key Assignments 3 5 Public Man Machine Interface MMI 3 5 1 Reading the Phonebook Memory Location 3 5 2 Features for Factory Service 3 5 3 Tips for Call Option 3 6 Security Procedure 3 7 Troubleshooting 4 ASSEMBLY INSTRUCTIONS 4 1 Assembly Structure 4 2 Antenna sub assembly 4 2 1 Appendix 1 Speaker modul...

Page 3: ...odulation 5 1 4 Output RF Spectrum due to Switching Transients 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: ... 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: ...NS SERVICE STATIONS BLASTING AREAS ETC 3 OPERATION OF ANY RADIO TRANSMITTING EQUIPMENT INCLUDING CELLULAR TELEPHONES MAY INTERFERE WITH THE FUNCTIONALITY OF INADEQUATELY PROTECTED MEDICAL DEVICES CONSULT A PHYSICIAN OR THE MANUFACTURER OF THE MEDICAL DEVICE IF YOU HAVE ANY QUESTIONS OTHER ELECTRONIC EQUIPMENT MAY ALSO BE SUBJECT TO INTERFERENCE Cautions 1 Servicing and alignment must be undertaken...

Page 6: ...operating the equipment 3 Servicing information provides complete instructions for testing disassembly and reassembly of the product Step by step troubleshooting information is given to enable the isolation and identification of a malfunction and thus determine what corrective action should be taken The test information enable verification of the integrity of the equipment after any remedial actio...

Page 7: ...ined at customers premises The level of repairs are highly dependent on the customer s resource and capabilities and are approved by 7 Please abide by your service contract agreements in determining the level of repairs that you are capable of conducting Only qualified personnel shall perform all the related repair procedures based on the service contract 2 2 1 Level 0 This level DO NOT involved a...

Page 8: ...nly Level 1 Part No DARTS P N Description SVC Level LG P N 2207 0030 0003 Vibrator 3V L1 2285 2187 0000 BOTTOM CASE Ass y Silver L1 221C BA03 0102 Battery connector Pitch 2 5mm 3Pin PA08303 L1 2285 3224 0000 Antenna Ass y w Louder SPK L1 2206 1110 0001 Receiver Panasonic EASG1D501E2 L1 2285 1187 A000 TOP CASE Ass y LG Silver w LENS L1 2211 DP18 1100 Deco Plate for Side L L1 2211 DP18 2100 Deco Pla...

Page 9: ...any components on the faulty main board 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 L2 ...

Page 10: ...06F XC414 II06 L2 5 220S 1020 0081 SIDE KEY 20MA 12V 6P L2 5 220S 2010 0081 RF TEST SWITCH 6000MHz 2W 50 OHM MS156 L2 5 2212 BC18 0000 BASE BAND COVER FOR ARI L2 5 2212 BF18 0000 BASE BAND FRAME FOR ARI L2 5 2212 RC18 0000 RF COVER FOR ARI L2 5 2212 RF18 0000 RF FRAME FOR ARI L2 5 221C SC06 0102 SIM CARD CONN PITCH 2 54mm 6P 217 010 60 L2 5 221C SP02 0186 SPEK CONN P 3mm 2P CBE 2809 2258H POGOPI L...

Page 11: ...The service interface is used for the purpose of communicating with the mobile unit in situation such as software upgrading and testing process These service interfaces are listed below DARTS P N Description SVC Level LG P N RF Cable L2 5 SW D L cable ALL 2 4 Features The LG Telephone Model KG190 is a high performance small light handset for business and domestic use The following features are pro...

Page 12: ...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 12 ...

Page 13: ...e 2 5 6 Software Download Cable Item Description Part Number 1 Cellphone 2 Standard Battery Li lon 720mAh 220A 0307 1000 3 Earphone 4 USB cable 5 AC Travel Charger 2237 22T0 1003 6 Software Download Cable 13 ...

Page 14: ...full operational information 3 2 Liquid Crystal Display The telephone handset has a graphical chip on glass display The following icons are available 14 1 2 3 4 5 Figure 3 1 Crystal Display 1 Top of the screen shows Essential Indicators See table below 2 Next line displays the operator name 3 shows date time 4 To enter Menu press left selection key 5 To use Name in the phone book press right selec...

Page 15: ...es the profiles alert type is vibration Indicates the profiles alert type is vibration and ring Indicates the profiles alert type is vibration then ring Indicates the profiles alert type is light only The Alarm clock is set on Indicates roaming Indicates missed call Indicates Broadcast set on Indicates new text messages Indicates call diverted is set on Indicates GPRS service Indicates earphone pl...

Page 16: ... Figure 3 2 Location of Controls Receiver USB connector Microphone B Selection key D Send Answer key Speaker Antenna area C Navigation key F MP3 key A Power on End key Camera E Left side key Hand free kit connection Battery Cover ...

Page 17: ...y 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 Figure 3 3 KG190 Keypad Layout 17 ...

Page 18: ... to the Favorites menu Down key Access to the Phone book menu Left key Access to the Profiles menu Right key Access to the Messages menu Scroll through names and numbers stored in the phone book or through the phone s menus submenus and option list D Send Answer Key Make and answer calls press in Idle mode to see recent dialed calls 0 9 input number and character E Left Side Key Adjust handset vol...

Page 19: ...on 2 Resource BIN 3 Echo loop 4 Keypad 5 Vibrator 6 Loud Spk 7 Ring tone 8 LED 9 LCD 10 LCD contrast 11 Receiver 12 Charger 13 Headset 14 RTC 15 MTBRF 16 UART 17 Nand Flash 18 CAMERA 19 Reset Factory Display IMEI By 06 Enter Engineer Mode By 3646633 1 Network Info 2 Device 3 Audio 4 GPRS act 5 Band Sel 6 Misc 7 Auto Test List 8 PWR Down Control 9 Debug Info 10 Socket Test Reset to default language...

Page 20: ... of conference call End All end a multi party call End End a call Mute mute the call during the conversation New Call make a new call during an active call Phonebook shortcut to phonebook menu SMS shortcut to Message menu Sound Recorder shortcut to Sound Recorder submenu DTMF set On Off for DTMF Dual Tone Multi Frequency tone dialing system 3 6 Security Procedure Features Description PIN 1 and 2 P...

Page 21: ...ty setup Barred dials Menu Setting call setup call barring Calls cannot be made The telephone is not registered to a network Move to a coverage area and operate the telephone after it has registered with a network Calls cannot be made from Fixed Dial Stored Check that SIM supports Fixed Dial Check if the Fixed Dial is switched on Menu Setting security setup Fixed dials Check the telephone number i...

Page 22: ...4 ASSEMBLY INSTRUCTIONS 4 1 Assembly Structure 22 ...

Page 23: ...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 23 ...

Page 24: ...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 24 ...

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 25 ...

Page 26: ...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 26 ...

Page 27: ...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 27 ...

Page 28: ...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 28 ...

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 29 ...

Page 30: ...6 To screw four screws 7 To add battery cover on main assembly 30 ...

Page 31: ... 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 5 1 3 Output RF Spectrum due to Modulation Offset from Centre Frequency kHz Maximum Level Relative to Carrier 9dB 100 0 5 200 30 250 33 400 60 600 to 1800 60 ...

Page 32: ...measurements Frequency Spen 0 Hz Measurement Bandwidth 30 kHz Video Bandwidth 30 kHz modulation 100 kHz switching Average Modulation Over 200 burst Peak Hold Switching Over 10 burst 5 1 5 Spurious Emissions at Antenna Connector Frequency range Power level in dBm GSM 400 GSM 700 GSM 850 GSM 900 DCS 1 800 PCS 1 900 9 kHz to 1 GHz 36 36 36 1 GHz to 12 75 GHz 30 30 1 GHz to 1 710 MHz 30 1 710 MHz to 1...

Page 33: ...300 kHz 1 MHz excl relevant TX band 20 MHz 1 MHz 3 MHz GSM 750 777 MHz to 792 MHz 30 MHz 3 MHz 3 MHz GSM 850 824 MHz to 849 MHz P GSM 890 MHz to 915 MHz offset from edge E GSM 880 MHz to 915 MHz of relevant TX band DCS 1 710 MHz to 1 785 MHz PCS 1 900 1 850 MHz to 1 910 MHz and the RX bands For GSM 400 MS GSM 900 MS and DCS 1 800 MS 925 MHz to 960 MHz 1 805 MHz to 1 880 MHz For GSM 700 MS GSM 850 ...

Page 34: ... MHz to 1 785 MHz PCS 1 900 1 850 MHz to 1 910 MHz offset from carrier NOTE 1 The excluded RX bands are tested in sub clause 13 4 NOTE 2 The filter and video bandwidths and frequency offsets are only correct for measurements on an MS transmitting on a channel in the Mid ARFCN range NOTE 3 Due to practical implementation the video bandwidth is restricted to a maximum of 3 MHz 5 1 6 Residual Peak Po...

Page 35: ...Class ll RBER 6 742 0 42 8 33 8900 1000000 120000 7 5 24000 9 333 60000 0 122 0 41 2 439 164000 20000000 8200 The reference sensitivity level is 102dBm E GSM 900 Half 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 Channels Propagati...

Page 36: ...0 42 8 33 8900 1000000 120000 7 5 24000 9 333 60000 0 122 0 41 2 439 164000 20000000 8200 The reference sensitivity level is 102dBm DCS 1800 Half 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 Channels Propagation Conditions TUhigh ...

Page 37: ...0 42 8 33 8900 1000000 120000 7 5 24000 9 333 60000 0 122 0 41 2 439 164000 20000000 8200 The reference sensitivity level is 102dBm PCS 1900 Half 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 Channels Propagation Conditions TUhigh ...

Page 38: ...6 BLOCK DIAGRAM 6 1 KG190 Base band Hardware Typical application and Block Diagram Figure 6 1 Typical application of MT6217 38 ...

Page 39: ...Figure 6 2 MT6217 Block Diagram 39 ...

Page 40: ...6 2 KG190 RF Block Diagram Figure 6 3 MT6120 Block Diagram 40 ...

Page 41: ...41 ...

Page 42: ...42 ...

Page 43: ...XADCREF U201 Q MT6218B 17 C2 XIN B1 XOUT C1 BBWAKEUP U201 R MT6218B 17 D1 VDDK1 M1 VDDK2 V8 VDDK3 V16 VDDK4 H19 VDDK5 C16 VDDK6 W4 VDD3_EMI1 W7 VDD3_EMI2 W9 VDD3_EMI3 W11 VDD3_EMI4 W13 VDD3_EMI5 W15 VDD3_EMI6 W18 VDD3_EMI7 T18 VDD3_EMI8 V3 VDD3_EMI9 V6 VDD3_EMI10 U8 VDD3_EMI11 V10 VDD3_EMI12 V12 VDD3_EMI13 V14 VDD3_EMI14 U16 VDD3_EMI15 V19 VDD3_EMI16 R19 VDD3_EMI17 P15 VDD3_USB D4 VDD3 1 F1 VDD3 2...

Page 44: ...F2 VCCF J6 VCCPS VCCR J7 DQ12 J8 DQ7 J9 VSS4 VSS2 J10 I O7 K1 WEN K2 WPN K3 DQ8 K4 DQ2 K5 DQ11 K6 NC21 NC13 K7 DQ5 K8 DQ14 K9 I O5 K10 I O6 L1 NC22 NC14 L2 NC23 L3 NC24 L4 NC25 L5 NC26 NC15 L6 I O1 NC16 L7 I O2 L8 I O3 L9 I O4 L10 NC27 NC17 M1 NC28 NC18 M2 NC29 M9 NC30 M10 NC31 NC19 U102 S71PL127JB0BAW9Z0 R133 n m C122 1n C140 33p C142 VCE 5 6V 10pF R140 1K5 R141 n m_TBD C124 100n R146 3 9K R147 3...

Page 45: ...56 100K R461 1K5 R459 27R R460 27R R435 200R R436 200R R437 200R 1 D1 2 D2 3 G 4 S 5 D3 6 D4 U404 SI3443DV R402 0R 0603 1 10W C402 4 7u 0805 X5R 10V R406 100K 1 2 LED402 1 2 LED403 1 2 LED404 1 2 LED405 1 2 LED406 1 2 LED407 HT 191NB5 1 2 3 4 D401 HT 372FCH 1 2 D455 RB520S 30 R407 24K 1 1 2 D433 RB160M 30 1A 30V 1 S1 2 G1 3 D2 4 S2 5 G2 6 D1 U406 FDG6303N 1 2 D432 RB520S 30 R469 100K R426 0 1R R08...

Page 46: ...1 2 ESD357 1 2 ESD356 1 2 ESD355 1 2 ESD354 1 2 ESD353 1 2 ESD352 1 2 ESD351 1 2 ESD350 1 2 ESD349 1 2 ESD348 1 2 ESD301 1 2 ESD347 1 2 3 4 5 6 S333 T304 1 2 ESD367 1 EN 2 CTRL0 3 CTRL1 4 AGND 5 ISET 6 VOUT 7 VIN 8 C1P 9 C1N 10 C2N 11 C2P 12 PGND 13 LED4 14 LED3 15 LED2 16 LED1 17 GND U302 RT9362 C301 4 7u 0603 C302 4 7u 0603 C304 2 2u 0603 R302 24K R301 100K 1 NC 2 VSS 3 ID 4 VDD 5 VDD2 6 VSS 7 W...

Page 47: ...F7 GND_IO1 G7 GND_IO2 U500 E AIT 700 1 VOUT1 2 VDD 3 VOUT2 6 CE1 5 GND 4 CE2 U501 R5323N001B C505 2 2u 0603 6 3V C502 2 2u 0603 6 3V R504 0R C506 100n C507 100n 1 PWDN 2 AVDD 3 DVDD 4 VSYNC 5 HREF 6 PCLK 7 XCLK 8 DGND 9 RESET 10 Y7 11 Y6 12 Y4 13 Y5 14 Y0 15 Y2 16 Y3 17 Y1 18 SIO_D 19 SIO_C 20 AGND 21 GND 22 GND 23 GND 24 GND 25 GND 26 GND 27 GND 28 GND U502 VL_6X6_MODULE_SOCKET C510 n m R505 100n...

Page 48: ...BS 41 TXEN 42 VBAT1 43 VBAT2 44 NC23 45 VRAMP 46 NC46 47 GND1GSM 48 GSMIN 49 GNDPAD U602 RF3146 C614 n m C615 n m C621 22p C624 22p C622 22p C616 22p C603 6p C601 0p5 C607 n m C611 n m L601 2 7n L605 2n2 L608 KMCB1005S750HA L609 KMCB1005S750HA L610 KMCB1005S750HA C608 0P5 C612 n m C604 27p R602 1k R603 10k R604 15k L606 8n2 L604 6N8 C602 27p C605 220p C617 100p C618 n m C619 n m C606 1n C630 1N C6...

Page 49: ...17 GND 3 18 VA 19 GPIO3 20 GPIO2 21 GPIO1 22 NC 3 23 NC 4 24 NC 5 25 GND 4 U701 SI4700 C703 22n R706 0R R707 0R C701 15p C702 15p L701 82n R708 0R C708 4 7uH FM_ANT GND LSCK_FM_3WIRE_CLK LSCE1_FM_3WIRE_CE LSA0_FM_3WIRE_DATA F32K_FM AU_FMIN_R AU_FMIN_L GND GND GND LSCE0_FM_RST VDD FM_IO2V8 GND GND EINT3_FMINT GND AGND 49 ...

Page 50: ...0 Z602 OK 11 0945 1842 5183 RF FILTER 1842 5MHz 5P F6EB 1G8425 B2BG 500 Z603 OK BB 12 220S 1020 0081 SWITCH SIDE KEY 20MA 12V 6P SOH 213HST 500 S320 S321 S333 OK 13 0942 6001 1000 TUNING FORK CRYSTAL 32 768KHZ 20ppm 12 5pF 500 X201 OK 14 225R 5323 5080 REGULATOR SOT 23 6 6P R5323N001B TR F 500 U501 OK 15 2258 2005 2080 AUDIO AMPLIFIER ZQY 15P TPA2005D1ZQYR 500 U101 OK 16 225F 4700 2080 FM MODULE Q...

Page 51: ...2212 RF18 0000 RF FRAME 200 OK Antenna Ass y 39 2285 3187 0000 ASS Y ANTENNA 100 OK Top case Ass y 40 2206 1110 0001 RECEIVER RECTANGLE L1 5xW0 6xH3 8 100 OK 41 2218 1800 6280 KEYPAD ARI RU SILVER MM OB613S 40CHA 100 OK 42 2211 SE18 1100 SIDE KEY CASE ARI SILVER FOR 2 WAY 100 OK 43 2211 SE18 0100 SIDE KEY CASE ARI SILVER FOR 1 WAY 100 OK 44 2211 DP18 1100 DECORATE PLATE ARI D BLUE FOR SIDE L 100 O...

Page 52: ...128dot 26P LKC34TML8Y2 100 OK 56 2211 BA18 0100 BAT COVER 100 OK Accessory 57 220A 1800 7080 BATT PACK 50 OK 58 2237 22T0 1003 TRV CHARGER 50 OK 59 2236 6620 4001 CABLE MINI CABLE 50 OK 60 223A 0020 1080 HANDSFREE 50 OK Service 50 OK 61 SW D L CABLE 50 62 2281 18B5 0080 PCBA 50 OK ...

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