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LG KG270 Service Manual

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KG270_cover(6)_0404
1904.1.1 1:19 AM
˘
` 1
Internal Use Only
Service Manual
KG270/MG160
Date: April, 2007 / Issue 1.0

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  • Page 1 KG270_cover(6)_0404 1904.1.1 1:19 AM ˘ Internal Use Only Service Manual KG270/MG160 Date: April, 2007 / Issue 1.0...

  • Page 2: Table Of Contents

    4.8. Key backlight Trouble ......64 4.9. LCD Trouble..........66 4.10. Microphone Trouble ......69 4.11. Receiver Trouble.........71 4.12 Speaker Trouble ........73 Copyright © 2007 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 © 2007 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 © 2007 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 © 2007 LG Electronics. Inc. All right reserved. - 6 - Only for training and service purposes...

  • Page 6: Performance

    Mono or Stereo(Optional) Yes(Plug in Type) : 3.0V MIDI 16 poly I/O Connect 18 Pins (included Earphone Jack) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 7 - Only for training and service purposes...

  • Page 7: S/W Features

    Camera Camera Module Audio Voice Codec FR, HR, EFR, AMR-NB FM Radio Integrated handsfree speaker Speaker phone mode LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 8 - Only for training and service purposes...

  • Page 8: Only For Training And Service Purposes

    Calling Line dentification Full Call divert Speed Dialing Last Number Redial Multi-party Call (Conference Call) Explicit Call Transfer Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 9 - Only for training and service purposes...

  • Page 9: Only For Training And Service Purposes

    Fixed Dial Number Barred Dial Number Service Dial Number Email Entry Picture ID Video Caller ID My Name card LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 10 - Only for training and service purposes...

  • Page 10: Only For Training And Service Purposes

    Message Protocol Normal, Fax, National Paging, Email, X400, ERMES, Voice Message Overflow Indicator Message Center Number Help Menu Copyright © 2007 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

    Sync ML Game Menu Quick Access Mode (Profile) External Interface Electrical Man Machine Interface O Development and Test Facility LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 12 - Only for training and service purposes...

  • Page 12: Only For Training And Service Purposes

    Cigar Lighter Adapter Portable Handsfree Bluetooth headset Bluetooth stereo earset controller Car kit Leather Pouch Stylus Pen Compass Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 13 - Only for training and service purposes...

  • Page 13: Technical Brief

    3. TECHNICAL BRIEF 3. TECHNICAL BRIEF 3.1 Digital Main Processor(PMB7880) Figure. 3-1 PMB7880 FUNCTIONAL BLOCK DIAGRAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 14 - Only for training and service purposes...

  • Page 14: Only For Training And Service Purposes

    The E-GOLDvoice is powered by the C166®S MCU and TEAKLite® DSP cores. The operating temperature range from -40C to 85C. It is manufactured using the 0.13 •Ïm CMOS process. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only...

  • Page 15: Only For Training And Service Purposes

    • Fully integrated RF VCO. ] Crystal Oscillator • Fully digital controlled crystal oscillator core with a highly linear tuning characteristic. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 16 - Only for training and service purposes...

  • Page 16: Only For Training And Service Purposes

    • System start up circuitry • Charger circuitry for NiCd, NiMh and LiIon cells • Integrated regulators for direct connection to battery. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 17 - Only for training and service purposes...

  • Page 17: Only For Training And Service Purposes

    For baseband operation, the E-GOLDvoice supports: • Making or receiving a voice call • Sending or receiving an SMS. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 18 - Only for training and service purposes...

  • Page 18: Only For Training And Service Purposes

    The E-GOLDvoice includes a multi-core debug. The C166 and TEAKlite cores can be debugged in parallel with: • A single JTAG port (that is, on a single host) • Mutual breakpoint control. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 19 - Only for training and service purposes...

  • Page 19: Only For Training And Service Purposes

    • Prevention of illegal Flash programming • Flash programming makes use of the E-GOLDvoice ID for personalization checks with IMEI and SIM-lock protection LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 20 - Only for training and service purposes...

  • Page 20: Only For Training And Service Purposes

    This processing includes frequency and timing compensation of the baseband and voiceband signals. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 21 -...

  • Page 21: Power Amplifier Module (Sky77318)

    The GaAs die, the Silicon (Si) die, and the passive components are mounted on a multi-layer laminate substrate. The assembly is encapsulated with plastic overmold. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 22 - Only for training and service purposes...

  • Page 22: Only For Training And Service Purposes

    (iPAC) function, which is insensitive to variations in temperature, power supply, process, and input power. The ENABLE input allows initial turn-on of PAM circuitry to minimize battery drain. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 23 -...

  • Page 23: 26 Mhz Clock (Dcxo)

    AFC compensation is sent to the LUXO (Lineari-Zation Unit of Crystal Oscillator), which in turns control the DCXO core and generates The 26MHz system clock. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 24 - Only for training and service purposes...

  • Page 24: Rtc(32.768Khz Crystal)

    The module RTC Shell solely performs level translation of the 32KHz clock to the VDD_LD1 power supply domain, and is not functionally associated with the RTC. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 25 -...

  • Page 25: Lcd Interface(3-Wire Spi Interface)

    AAT3157ITP-T1 C200 C201 MLED W_LED_DRV EN_SET MLED1 MLED2 R202 C202 100K C203 C204 Figure 3-5-2. Charge pump interface LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 26 - Only for training and service purposes...

  • Page 26: Only For Training And Service Purposes

    Data Output (mA/Ch) Data Output (mA/Ch) 20.0 17.0 14.0 12.0 10.0 0.05 Figure 3-5-3. Charge pump Output Current Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 27 - Only for training and service purposes...

  • Page 27: Sim Card Interface

    This signal makes SIM card to HW default status. SIM_CLK This signal is transferred to SIM card. SIM_DATA This signal is interface datum. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 28 - Only for training and service purposes...

  • Page 28: Keypad Interface

    • To set the keypad to a 5x5 scan matrix (5 input and 5 output pins) The scan mode should be determined at the very beginning of the system start because changes are not allowed later. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 29 -...

  • Page 29: Battery Charging Block Interface

    The AAT3681A has four basic modes for the battery charge cycle: pre-conditioning/trickle charge; constant current/fast charge; constant voltage; and end of charge. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 30 - Only for training and service purposes...

  • Page 30: Rf Interface

    An automatic DC-offset compensation is implemented and can be switched depending on the gain setting. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 31 -...

  • Page 31: Only For Training And Service Purposes

    26MHz. Thus a tightly controlled frequency modulation of the VCO is achieved. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 32 - Only for training and service purposes...

  • Page 32: Audio Interface

    The audio front-end itself can be considered to be organized in three sub-blocks: • Interface to processor cores (TEAKlite and - indirectly - C166S) • Digital filters • Analog part. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 33 - Only for training and service purposes...

  • Page 33: Only For Training And Service Purposes

    Main Microphone Negative signal(Differential signal) MICP2 Headset Microphone Positive signal(Differential signal) MICN2 Headset Microphone Negative signal(Differential signal) VMIC Main/Headset Microphone supply power LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 34 - Only for training and service purposes...

  • Page 34: Only For Training And Service Purposes

    C120 LOUD_SPK_EN C122 C123 1 uF 0.1u 0.1u (2012) (10V,K) Gain : Rf/Rin Figure 3-10-3 Main Speaker interface Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 35 - Only for training and service purposes...

  • Page 35: Only For Training And Service Purposes

    C328 (2012) (10V,Z,Y5V) (50V,J,NP0) HSEJ-18S04-25R VBAT R332 BATT_TEMP CN302 C336 C337 (50V,J,NP0) (50V,C,NP0) (TOL:0.25P) Figure 3-10-5 Headset interface LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 36 - Only for training and service purposes...

  • Page 36: Key Led Interface

    This handset has 6 LEDs that illuminates blue color. Control signal is controlled by EGold-voice with PWM and handset has 3 methods, ON, OFF and Dimming. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 37 -...

  • Page 37: Vibrator Interface

    2SC5585 Figure 3-12 Vibrator interface This handset has vibrator operation. Control signal is controlled by EGold-voice with PWM. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 38 - Only for training and service purposes...

  • Page 38: Memory Interface

    Up to 3 external CS signals can be generated to save external glue logic. Access to very slow memories is supported via a special ‘Ready’ function. The system MCU clock is set to run with 26Mhz. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 39 -...

  • Page 39: Power Block Interface

    After system start up several methods are implemented for active and idle power saving. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 40 - Only for training and service purposes...

  • Page 40: Only For Training And Service Purposes

    • Internal reset of the baseband, including silent reset. • Tri-state function of the baseband module. • Standby mode controlled by VCXO_EN provided by SCCU module. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 41 -...

  • Page 41: Fm Radio Interface

    3. TECHNICAL BRIEF 3.15 FM Radio Interface LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 42 - Only for training and service purposes...

  • Page 42: Only For Training And Service Purposes

    The device consists of two 80mW Class AB headphone drivers, internal feedback network (fixed -1.5V/V gain), undervoltage lockout (UVLO)/shutdown control, charge pump, and comprehensive click-and-pop suppression circuitry. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 43 -...

  • Page 43: Trouble Shooting

    PAM (Power Amp. Module) X101 DCXO (26MHz) FL400 ASM (Antenna Switch Module) SW400 Mobile Switch FL401 RX SAW Filter LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 44 - Only for training and service purposes...

  • Page 44: Only For Training And Service Purposes

    TP405 CIRCUIT DIAGRAM R400 R401 C400 Antenna Matching component L401 22nH SW400 RF500 Mobile SW Coupling Capacitor C410 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 45 - Only for training and service purposes...

  • Page 45: Only For Training And Service Purposes

    Change Antenna Intenna Contact Check Resolder component Matching component Check Change SW400 Mobile SW Download Calibration Change PCB LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 46 - Only for training and service purposes...

  • Page 46: Only For Training And Service Purposes

    DCXO(X101) FL401 U400 Check point mobile SW & ASM & SAW Filter(SW400,F L400,FL401) U102 X101 Re-Download S/W & Copyright © 2007 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

    PLL Circuit. FL401 U400 U102 X101 CIRCUIT Waveform Waveform Pin 2 X101 NX3225SA Pin 1 2V8_VIO R107 ( NX3225SA(W-188-34-7) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 48 - Only for training and service purposes...

  • Page 48: Only For Training And Service Purposes

    U102 Mobile SW & ASM is OK. See next page * FL401 6,7 and 8,9 output are balanced Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 49 - Only for training and service purposes...

  • Page 49: Tx Trouble

    PAM(U400) Control Signal Check ASM & Mobile S/W & SAW U102 (FL400,SW400 X101 ,FL401) Re-Download S/W & RF LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 50 - Only for training and service purposes...

  • Page 50: Only For Training And Service Purposes

    PAM Control Vapc Paon & BS Signal is OK. See next page to check ASM & Mobile SW Circuit. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 51 - Only for training and service purposes...

  • Page 51: Only For Training And Service Purposes

    C417 C418 GND1 GSM850_900TX GND2 GSM850_900RX GND3 Mode GSM900 TX DCS1800 TX GSM800 RX DCS1800 RX H(2.7V) H(2.7V) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 52 - Only for training and service purposes...

  • Page 52: Only For Training And Service Purposes

    OK ? U102 Pin 3,7 Replace ASM Signal is (FL400) normal ? Mobile SW & ASM is Check Antenna. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 53 - Only for training and service purposes...

  • Page 53: Power On Trouble

    CIRCUIT 3V2_VBUF VRF1 (1608) 2V0_VRTC C111 R100 6.8K BAT100 C113 L102 18nH VBAT C115 (1608) 2.2u (16V,K,X5R) REXT LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 54 - Only for training and service purposes...

  • Page 54: Only For Training And Service Purposes

    C101 POWER ON. V_MEM 2.8V C109 V_IO 2.8V C107 V_SIM 2.85V C108 VRF0 1.5V C110 V_ANA 2.5V C113 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 55 - Only for training and service purposes...

  • Page 55: Sim Card Trouble

    R302/C310 J300.PIN1 C331/C332 CIRCUIT DIAGRAM 2V85_VSIM 2V85_VSIM 2V85_VSIM J300 SIM_RST SIM_DATA SIM_CLK GND2 GND1 C310 C311 C312 0.1u LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 56 - Only for training and service purposes...

  • Page 56: Only For Training And Service Purposes

    Other component C311/C312 J300.PIN1 = 2.85V Check J300.PIN1 Change board Re-download SW Check Operation Change board - 57 - Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes...

  • Page 57: Vibrator Trouble

    Q300.PIN3 R306 R308 R305 CIRCUIT DIAGRAM VBAT VBAT C302 (50V,J,NP0) CN300 C305 R305 (1608) R306 Q300 VIBRATOR 2SC5585 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 58 - Only for training and service purposes...

  • Page 58: Only For Training And Service Purposes

    Check Voltage Level of Change PCB R308=0.7V R306/R308 Q300.PIN3=0V Check Voltage Level of Change Q300 R305=0V Q300.PIN3 and R305 Replace Vibrator Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 59 - Only for training and service purposes...

  • Page 59: Keypad Trouble

    C218 C219 C220 R211 680 KEY_IN0 R212 680 KEY_IN1 R213 680 KEY_IN2 R214 680 KEY_IN3 R215 680 KEY_IN4 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 60 - Only for training and service purposes...

  • Page 60: Only For Training And Service Purposes

    Check Metal Doom Change Metal Doom R201/R203/R204 R209/R211/R212 Check soldering status Resolder component R213/R214/R215 Of component Change PCB Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 61 - Only for training and service purposes...

  • Page 61: Rtc Trouble

    - The power of RTC is right. SWITCH_ON PWRON OSC32K 32KOUT F32K 32KIN CLKOUT CHG_STATUS X100 R100 32KIN 6.8K BAT100 32KOUT MC-146_12_5PF 32.768KHz LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 62 - Only for training and service purposes...

  • Page 62: Only For Training And Service Purposes

    Is the frequency Replace X100 and try again. about 32Khz? Is VRTC Replace BAT100 about 2.0V? RTC will work properly Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 63 - Only for training and service purposes...

  • Page 63: Key Backlight Trouble

    D20 4 D201 R203 Q200.PIN2 D205 D202 CIRCUIT DIAGRAM VBAT KEY BACKLIGHT (10V,K,X5R) (10V,K,X5R) R222 2SC5585 KEY_BACKLIGHT Q200 R223 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 64 - Only for training and service purposes...

  • Page 64: Only For Training And Service Purposes

    Check component R222=0.7V Of R222 and Q200.PIN2 R222 and Q200 Check LED Replace component LD200~LD205 component R216~R221 Change PCB Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 65 - Only for training and service purposes...

  • Page 65: Lcd Trouble

    R208 SSC0_MTSR MLED MLED1 MLED2 C211 C212 C213 C214 C208 C209 C210 LCD_ID R210 C221 100K IMSA-9671S-13Y902 (ENQY0013801) LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 66 - Only for training and service purposes...

  • Page 66: Only For Training And Service Purposes

    Or change PCB Including soldering status Refer to next page Check soldering Replace CN200 status of CN200 Change PCB Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 67 - Only for training and service purposes...

  • Page 67: Only For Training And Service Purposes

    ]SS0_MTSR pattern is out randomly when clock is fluctiatied. , clock frequency is 13MHz and LCD_RESET is High(2.8V). LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 68 - Only for training and service purposes...

  • Page 68: Microphone Trouble

    2.2K R304 C306 0.1u VINNORP OB4-15L42-C33L 100ohm C308 C307 0.1u R307 C309 0.1u MIC300 VINNORN 100ohm R309 2.2K Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 69 - Only for training and service purposes...

  • Page 69: Only For Training And Service Purposes

    Check the voltage Level Change Microphone of MIC_P MIC_P= about 1.2~1.5V DC with a few tens mV Replace PCB LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 70 - Only for training and service purposes...

  • Page 70: Receiver Trouble

    REC.N REC.P CIRCUIT DIAGRAM RECEIVER CN100 L100 22nH REC_P L101 22nH C100 11*07*3T receiver REC_N (SURY0013001) C102 C103 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 71 - Only for training and service purposes...

  • Page 71: Only For Training And Service Purposes

    Re-solder or Check L100 & Fluctiate signal above replace the Component L101 1.2V replace Receiver Check Receiver Replace PCB LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 72 - Only for training and service purposes...

  • Page 72: Speaker Trouble

    0.1u RADIO_SPK_L BYPASS D100 D101 C120 C122 C123 LOUD_SPK_EN 1 uF 0.1u 0.1u (2012) (10V,K) Gain : Rf/Rin Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 73 - Only for training and service purposes...

  • Page 73: Only For Training And Service Purposes

    Check the Signal, L102,L103 L102,L103 Re-Assemble Check the Contact or Re-place Of CN101 Speaker Try again or Change the Board LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 74 - Only for training and service purposes...

  • Page 74: Headphone Trouble

    12,13 : CHG C327 C328 (2012) (10V,Z,Y5V) (50V,J,NP0) HSEJ-18S04-25R VBAT R332 BATT_TEMP CN302 C336 C337 (50V,J,NP0) (50V,C,NP0) (TOL:0.25P) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 75 - Only for training and service purposes...
  • Page 75 Re-solder causal Does waveform at component CN301.4 and CN301.5 (CN302,C322 etc.) fluctuate? Change another Ear-Mic set and Try again LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 76 - Only for training and service purposes...

  • Page 76: Charging Trouble

    R122 CHG_EN_TEST C126 TIME V2P8 (10V,K,X5R) R123 CHG_EN C127 PGND 0.015u C128 R124 R125 ISL9201IRZ-T 160K 100K (1%) Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 77 - Only for training and service purposes...
  • Page 77 High or Low? The battery may have Battery is charged? problems. Change the battery. Charging is properly operating LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 78 - Only for training and service purposes...

  • Page 78: Fm Radio Trouble

    4. TROUBLE SHOOTING 4.15. FM Radio Trouble TEST POINT R332 R338/R337/R336 U304.P 1 U304.P4 R327 R331 U302 U303 R329/R330 C332/C333 Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 79 - Only for training and service purposes...

  • Page 79: Circuit Diagram

    4. TROUBLE SHOOTING CIRCUIT DIAGRAM LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 80 - Only for training and service purposes...
  • Page 80 Audio Output Change U302 R329/R330 Of Transceiver C332/C333 Check R327/R331 Audio Output Change U303 Of Amplifier Change PCB Copyright © 2007 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 Setup Configure system like figure 5-1. Figure 9-1. Download Setup LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 82 - Only for training and service purposes...

  • Page 82: Download Process

    Setting(S) → Configuration : configuration download condition DLL, SW files and etc. About(H) → MultiGSM : Provide version information First, select Setting Menu. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 83 - Only for training and service purposes...
  • Page 83 : Select download speed You must 460800. System supports maximum 460800bps. : Select port select start and end port be operated LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 84 - Only for training and service purposes...
  • Page 84 5. DOWNLOAD 5.2.3. Download step[3] : Select files downloaded KG270 have 4 files, *.eep, *.fls, *.dffs and *.cust. But You must not select *.eep file. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 85 -...
  • Page 85 Turn on power of multi download and connector phones. If download is started, then push start button else program will download repeatedly. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 86 - Only for training and service purposes...
  • Page 86 5.2.5. Download step[5] : This region appears donwload status. If download is finished, PASS or FAIL.message is showed. Copyright © 2007 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 LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 88 - Only for training and service purposes...

  • Page 88: Circuit Diagram

    Checked DRAWING NAME Approved DRAWING VER-1.1 LG Electronics Inc. Iss. Notice No. Date Name LG(42)-A-5505-10:01 LG Electronics Inc. Copyright © 2007 LG Electronics. Inc. All right reserved. - 89 - LGE Internal Use Only Only for training and service purposes...
  • Page 89 DRAWING AUDIO,LCD,KEY NAME Approved DRAWING Iss. Notice No. Date Name REV-1.1 LG Electronics Inc. LGIC(42)-A-5505-10:01 LG Electronics Inc. LGE Internal Use Only - 90 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...
  • Page 90 RADIO,MEMORY,AUDIO,I/O NAME Approved 2006 DRAWING VER-1.1 LG Electronics Inc. Iss. Notice No. Date Name LG(42)-A-5505-10:01 LG Electronics Inc. Copyright © 2007 LG Electronics. Inc. All right reserved. - 91 - LGE Internal Use Only Only for training and service purposes...
  • Page 91 Designer KEE-OUN.PARK 2006 Checked DRAWING 2006 NAME Approved 2006 DRAWING VER-1.1 LG Electronics Inc. LGIC(42)-A-5505-10:01 LG Electronics Inc. LGE Internal Use Only - 92 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 92: Pcb Layout

    8. PCB LAYOUT Copyright © 2007 LG Electronics. Inc. All right reserved. - 93 - LGE Internal Use Only Only for training and service purposes...
  • Page 93 8. PCB LAYOUT LGE Internal Use Only - 94 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 94: Engineering Mode

    1. BB TEST 2. Model Version 3. Eng Mode 4. Call Timer 5. Factory Reset 6. MF Test Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 95 - Only for training and service purposes...
  • Page 95 2. Vibrator Off 1. Audio Test 5. Audio 2. Close 6. FM Radio * FM Radio function is not supported LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 96 - Only for training and service purposes...
  • Page 96 9.4.1.4 Vibrator This menu can control vibrator on and off operation. 9.4.1.5 Audio This menu can control MIDI operation Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 97 - Only for training and service purposes...

  • Page 97: Eng Mode

    This menu displays the Model software version. Eng Mode 1. Serving Cell 2. Neighbour Cells 3. Reset Information LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 98 - Only for training and service purposes...
  • Page 98 Cipher : Cipher mode of Serving Cell CBQ : Cell Bar Quality flag of Serving Cell CBA : Cell Bar Access flag of Serving Cell Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 99 -...
  • Page 99 BSIC : Base Tranceiver Station Identity Code of Neighbour Cell 9.4.3.3 Reset Information This menu displays the information of reset point in source code, call stack. LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 100 - Only for training and service purposes...

  • Page 100: Call Timer

    9.4.5 Factory Reset This menu is to format data block in the flash memory and this procedure set up the default value in data block. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 101 -...

  • Page 101: Mf Test

    4. Vibrator 5. LCD 6. Key Pad 7. Mic Speaker 8. FM radio * function is not supported LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 102 - Only for training and service purposes...
  • Page 102 When a pop-up message shows ‘Press Any Key’, you may press any keys. If the key is working properly, name of the key is displayed on the screen. Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only...

  • Page 103: Calibration

    10. CALIBRATION 10.1 Test Equipment Setup 4.000V 0.0000A 10.2 Calibration Steps 10.2.1 Tune on the phone 10.2.2 Execute “HK_28.exe” LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 104 - Only for training and service purposes...
  • Page 104 10. CALIBRATION 10.2.3 Click “SETTING” Memu KG278 10.2.4 Setup “Ezlooks” menu such as the following fugure Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 105 - Only for training and service purposes...
  • Page 105 1. By-Pass: not control by GPIB 2. Normal : control by GPIB Setup UART Port PWR : Power Supply CELL :Call-Test Equipment LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 106 - Only for training and service purposes...
  • Page 106 10. CALIBRATION 10.2.7 Select “MODEL” 10.2.8 Click “START” for RF calibration KG278 10.2.9 RF Calibration finish Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 107 - Only for training and service purposes...
  • Page 107 10. CALIBRATION 10.2.10 Calibration data will be saved to the following folder LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 108 - Only for training and service purposes...

  • Page 108: Stand Alone Test

    11.1.3 Confirm EEPROM & Delta file prefix name 11.1.4 Click “V24AT#ON” and then “Update Info” for communicating Phone and Test Program Not Connected Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 109 - Only for training and service purposes...
  • Page 109 11.1.6 Select “Non signaling” in the Quick Bar menu. Then Standalone Test setup is finished. Change "ptest mode" LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 110 - Only for training and service purposes...

  • Page 110: Tx Test

    11.2.3 Select “TX” in the RF mode menu and “PCL” in the PA Level menu 11.2.4 Finally, Click “Write All” bar and try the efficiency test of Phone Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only...

  • Page 111: Rx Test

    11.3.2 Select “RX” in the RF mode menu 11.3.3 Finally, Click “Write All” bar and try the efficiency test of Phone LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 112 - Only for training and service purposes...

  • Page 112: Exploded View & Replacement Part List

    12. EXPLODED VIEW & REPLACEMENT PART LIST 12.1 EXPLODED VIEW Copyright © 2007 LG Electronics. Inc. All right reserved. - 113 - LGE Internal Use Only Only for training and service purposes...
  • Page 113 LGE Internal Use Only - 114 - Copyright © 2007 LG Electronics. Inc. All right reserved. Only for training and service purposes...

  • Page 114: Replacement Parts

    LABEL MLAZ0038301 PID Label 4 Array Color Without SC100 CAN,SHIELD MCBA0016401 PRESS, NS, 0.2, , , , Color Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 115 - Only for training and service purposes...

  • Page 115: Main Component

    ECCH0000182 0.1 uF,10V ,K ,X5R ,HD ,1005 ,R/TP C120 CAP,CERAMIC,CHIP ECCH0002101 1 uF,10V ,K ,B ,TC ,2012 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 116 - Only for training and service purposes...
  • Page 116 0.1 uF,10V ,K ,X5R ,HD ,1005 ,R/TP C308 CAP,CERAMIC,CHIP ECCH0000120 39 pF,50V,J,NP0,TC,1005,R/TP C309 CAP,CERAMIC,CHIP ECCH0000161 33 nF,16V,K,X7R,HD,1005,R/TP C310 CAP,CERAMIC,CHIP ECCH0000115 22 pF,50V,J,NP0,TC,1005,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 117 - Only for training and service purposes...
  • Page 117 ECCH0003002 10 uF,10V ,Z ,Y5V ,HD ,2012 ,R/TP C403 CAP,CHIP,MAKER ECZH0000816 12 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 118 - Only for training and service purposes...
  • Page 118 18 nH,J ,1005 ,R/TP ,PBFREE L404 INDUCTOR,CHIP ELCH0003814 5.1 nH,S ,1005 ,R/TP ,5.1nH,1005 Q200 TR,BJT,NPN EQBN0007101 EMT3 ,0.15 W,R/TP ,LOW FREQUENCY Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 119 - Only for training and service purposes...
  • Page 119 100 ohm,1/16W ,J ,1005 ,R/TP R305 RES,CHIP,MAKER ERHZ0000702 10 ohm,1/10W ,J ,1608 ,R/TP R306 RES,CHIP,MAKER ERHZ0000404 1 Kohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 120 - Only for training and service purposes...
  • Page 120 240 Kohm,1/16W ,J ,1005 ,R/TP R345 RES,CHIP,MAKER ERHZ0000406 100 Kohm,1/16W ,J ,1005 ,R/TP R401 RES,CHIP,MAKER ERHZ0000401 0 ohm,1/16W ,J ,1005 ,R/TP Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 121 - Only for training and service purposes...
  • Page 121 Blue ,1608 ,R/TP ,Blue SMD LED LD205 DIODE,LED,CHIP EDLH0006001 Blue ,1608 ,R/TP ,Blue SMD LED R201 RES,CHIP,MAKER ERHZ0000505 680 ohm,1/16W ,J ,1005 ,R/TP LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 122 - Only for training and service purposes...
  • Page 122 100 ohm,1/16W ,J ,1005 ,R/TP R221 RES,CHIP ERHY0003301 100 ohm,1/16W ,J ,1005 ,R/TP SPFY00 PCB,MAIN SPFY0144601 FR-4 ,.0.8mm,BUILD-UP 4 ,KG270/KG278 Main PCB Copyright © 2007 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 123 - Only for training and service purposes...

  • Page 123: Accessory

    100-240V ,5060 Hz,5.2 V,0.7 A,CB/GOST ,AC-DC ADAPTOR,AC-DC SSAD0024902 ADAPTOR ,; ,100Vac~350Vac ,5.2±0.3V ,700mA ,5060 , ,WALL 2P ,I/O CONNECTOR , LGE Internal Use Only Copyright © 2007 LG Electronics. Inc. All right reserved. - 124 - Only for training and service purposes...
  • Page 124 Note...
  • Page 125 Note...

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