Page 1 Internal Use Only Service Manual KM555 Date: November, 2009 / Issue 1.0...
Page 2: Table Of Contents
4.4 GSM Power Amplifier Module ........66 12. Accessory .............159 4.5 WCDMA Band1/8 Power Amplifier Module ....67 4.6 WCDMA Band1/8 Low Noise Amplifier ......68 Copyright © 2009 LG Electronics. Inc. All right reserved. - - LGE Internal Use Only Only for training and service purposes...
Page 4: Introduction
A local telephone company may make changes in its communications facilities or procedure. If these changes could reasonably be expected to affect the use of the KM555 or compatibility with the net work, the telephone company is required to give advanced written notice to the user, allowing the user to take appropriate steps to maintain telephone service.
Page 5 1. Introduction D. Maintenance Limitations Maintenance limitations on the KM555 must be performed only by the LGE or its authorized agent. 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.
Page 6: Abbreviation
Power Amplifier Module Printed Circuit Board Programmable Gain Amplifier Phase Locked Loop PSTN Public Switched Telephone Network Radio Frequency Copyright © 2009 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 7 Voltage Controlled Oscillator VCTCXO Voltage Control Temperature Compensated Crystal Oscillator Wireless Application Protocol 8PSK 8 Phase Shift Keying LGE Internal Use Only - 8 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 8: Performance
RF chip TQ7M5005H (TriQuent)) Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright © 2009 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes...
Page 9: H/W Features
Main : Internal Fixed Type Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 10 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 10 V2.1 with A2DP Voice Recording Speaker Phone mode Support Travel Adapter CDROM Stereo Headset Data Cable T-Flash Not Equipped Copyright © 2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 11: Hw Spec
-98dBm/-96dBm (2.439%) GSM : -31dBm - DCS : - 29dBm 29dBm Timing Advance ± 0.5T Timing Advance ± 0.5T LGE Internal Use Only - 12 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 12 < 17.5 %, when Pout -20 dBm Peak Code Domain Error < -15 dB at Pout -20 dBm Copyright © 2009 LG Electronics. Inc. All right reserved. - 1 - LGE Internal Use Only Only for training and service purposes...
Page 13 Adjust output(TPC command) Uplink +0.5/1.5 +1/3 +1.5/4 -0.5/+0.5 -0.5/+0.5 -0.5/+0.5 -0.5/-1.5 -1/-3 -1.5/-4 group(10equal command group) +8/+12 +16/+24 LGE Internal Use Only - 14 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 14 Power Ratio (ACLR) > 43 dB @ 10 MHz Error Vector Magnitude 3GPP Not Complete Copyright © 2009 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved.
Page 15 4dB@36Mbps 0dB@48Mbps, ACR -1dB@54Mbps LGE Internal Use Only - 16 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 16 4dB@36Mbps 0dB@48Mbps, ACR -1dB@54Mbps Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright © 2009 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 17: Bb Circuit Technical Brief
3. BB Circuit Technical brief 3.1 Functional Block Diagram [Figure 3.1] Functional Block Diagram LGE Internal Use Only - 18 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved.
Page 18: Baseband Processor Introduction
3. BB Circuit Technical brief 3.2 Baseband Processor Introduction [Figure 3.2] Top level block diagram of S-GOLD®3H(PMB8878) Copyright © 2009 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes Copyright 2008 LG Electronics.
Page 19 - 48k x 16bit Data XRAM - 5k x 16bit Data YRAM - Incremental Redundancy(IR) Memory of 35904 words of 16bit LGE Internal Use Only - 20 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 20 - GMSK / 8-PSK Modulator according to GSM-standard 05.04 (5/2000) · GMSK Modulator: gauss-filter with B*T=0.3 · EDGE Modulator: 8PSK-modulation with linearized GMSK-Pulse-Filter Copyright © 2009 LG Electronics. Inc. All right reserved. - 21 - LGE Internal Use Only Only for training and service purposes...
Page 21 - A real time clock with alarm functions - 2 capture/compare units with 16 channels. One channel active during sleep mode. LGE Internal Use Only - 22 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 22 T_OUT5 JACK_DETECT PA_MODE T_OUT6 PAM Mode select ANT_SEL2 T_OUT7 ANT_SEL3 T_OUT8 KEY_BACK_EN T_OUT9 T_OUT10 LCD_BL_CTRL T_IN0 CHG_EN T_IN1 Copyright © 2009 LG Electronics. Inc. All right reserved. - 2 - LGE Internal Use Only Only for training and service purposes...
Page 23 Battery temperature measure RF_TEMP RF block temperature measure HW revision reserved pin VBAT (divide resistor) Battery supply voltage measure LGE Internal Use Only - 24 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 24 3. BB Circuit Technical brief 3.2.5 GPIO map Over a hundred allowable resources, KM555 is using as follows except dedicated to SIM and Memory. KM555 GPIO(General Purpose Input/Output) Map, describing application, I/O state, and enable level, is shown in below table [Table 3.2.5-1] S-Gold®3H GPIO pin Map...
Page 25 BT_DBB_INT DIF_HD LCD_VSYNC DIF_VD LGE Internal Use Only - 26 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 26 IRDA_RX I2S1 BT_PCM_CLK I2S1_CLK0 For Bluetooth I2S1_CLK1 Copyright © 2009 LG Electronics. Inc. All right reserved. - 27 - LGE Internal Use Only Copyright Only for training and service purposes 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 27 ETM I/F TRIG_IN TRIG_IN LGE Internal Use Only - 28 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 28 MEM _BC1_n _BC1 MEM _BC2_n LDQS MEM _BC3_n UDQS Copyright © 2009 LG Electronics. Inc. All right reserved. - 29 - LGE Internal Use Only Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 29 _RAS MEM _CAS_n _CAS LGE Internal Use Only - 0 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 30 TRIG_IN TRIG_IN RTC_OUT RTC_OUT SPCU_RC_OUT0 PM_VCXO_EN Copyright © 2009 LG Electronics. Inc. All right reserved. - 1 - LGE Internal Use Only Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 31 Navi key LED Backlight Control DSPIN1 BT_WAKEUP LGE Internal Use Only - 2 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 32: Power Management Ic
• Interrupt channels for peripherals Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright © 2009 LG Electronics. Inc. All right reserved. - - LGE Internal Use Only Only for training and service purposes...
Page 33 - Charge pump with internal switching capacitor for USB host VBUS supply voltage SM-POWER fully supports LED and Vibra Motor functionality LGE Internal Use Only - 4 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 34 - Overtemperature Warning - Support of S-GOLD standby power-down concept - Support of S-GOLD Power-Down Pad Tristate Function Copyright © 2009 LG Electronics. Inc. All right reserved. - 5 - LGE Internal Use Only Only for training and service purposes...
Page 35 2.2u 100n 2.2u 2.2u 2.2u 2.2u 2.2u 2.2u 2.2u 4.7u 2.2u 4.7u 4.7u [Figure3.3.1-1] SM-Power 3 Circuit Diagram LGE Internal Use Only - 6 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 36 3. BB Circuit Technical brief 3.3.2 Charging control - KM555 uses external charging IC which is BQ25040. Charging method : CC-CV Charger output voltage : 5.1 V Charging time : 2h 20m Charging current : 620 mA CV voltage : 4.2 V...
Page 37 3. BB Circuit Technical brief [Table 3.3.2-1] PIN description of Charging IC LGE Internal Use Only - 8 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 38 3. BB Circuit Technical brief [Figure 3.3.2-1] Block diagram of Charging IC Copyright © 2009 LG Electronics. Inc. All right reserved. - 9 - LGE Internal Use Only Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved.
Page 39: Power On/Off
If push the END_KEY button, voltage level of PWRON pin is change from high to low. ON_OFF1 is a power-on input for SM-POWER3 with active low levels. LGE Internal Use Only - 40 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 40: Sim Interface
3. BB Circuit Technical brief 3.5 SIM Interface KM555 supports 1.8V & 2.9V plug in SIM. SIM_IO, SIM_CLK, SIM_RST ports are used to communicate with S-Gold3H-LC and the SIM power supply enabled by PMIC. SIM Interface SIM_CLK : SIM card reference clock...
Page 41: Flash Connector
CLOSE R618 R619 R623 R621 R622 100K MMC_DETECT MMC_D[0] MMC_CLK MMC_CMD S600 DM3AT-SF-PEJ 100n [Figure 3.6-1] T-Flash Connector LGE Internal Use Only - 42 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 42: Memory
3. BB Circuit Technical brief 3.7 Memory 2Gbit NAND & 1Gbit DDRSDRAM employed on KM555 with 8 & 16 bit parallel data bus thru ADD(0) ~ ADD(29). The 2Gbit NAND Flash memory with DDR SDRAM stacked device family offers multiple high-performance solutions.
Page 43: Lcd Display
INOUT_B1 INOUT_B1 INOUT_A1 FL300 FL303 LCD_VSYNC IF_MODE[0] C315 C300 PIN21 PIN20 R310 R306 VA300 [Figure3.8-1] LCD circuit diagram LGE Internal Use Only - 44 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 44: Keypad Back-Light Illumination
[Figure 3.10.1-2] Number key back-light LED circuit diagram [Figure 3.10.1-2] Number key back-light LED circuit diagram [Figure 3.10.1-2] Number key back-light LED circuit diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 45 - LGE Internal Use Only Copyright 2008 LG Electronics.
Page 45: Lcd Back-Light Illumination
The protocol for using this interface is described in the following subsection. LGE Internal Use Only - 46 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 46 3. BB Circuit Technical brief Figure 13 I2C Serial data port control method Copyright © 2009 LG Electronics. Inc. All right reserved. - 47 - LGE Internal Use Only Only for training and service purposes...
Page 47: Battery Voltage Monitor
[Figure3.12-1] Battery voltage monitor circuit diagram Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 48 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 48: Audio
3. BB Circuit Technical brief 3.12 Audio KM555 Audio signal flow diagram as following diagram. FM RADIO FM RADIO RADIO_OUT_L RADIO_OUT_L RADIO_OUT_R RADIO_OUT_R Ear-Phone Ear-Phone HS_L HS_L EPPA1 EPPA1 HS_R HS_R EPPA2 EPPA2 EPP1 EPP1 REC_P REC_P RCV/SPK RCV/SPK REC_N...
Page 49 R420 8.2 EVLC5S0250 EVLC5S0250 C444 C443 [Figure 3.13.1-1] Audio circuit diagram C442 R414 EAR_GND [Figure 3.13.1-1] Audio circuit diagram LGE Internal Use Only - 50 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 50 C421 2.2K FB404 BLM15BD182SN1D HS_MIC_P C420 1800 C413 C412 C448 390p VMIC_GND EAR_GND [Figure 3.13.3-1] Headset circuit diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 51 - LGE Internal Use Only Only for training and service purposes...
Page 51: Wlan/Bluetooth/Fm (Rwfs-B971A)
BCM4325 solution is supported three kinds of functions. It is the one antenna structure which is supported of WLAN/Bluetooth in 2.4GHzand [Figure 3.14] WLAN/Bluetooth System Architecture LGE Internal Use Only - 52 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 52 [Figure3.14] shows the WLAN system architecture in the KM555 3.13.2 Bluetooth The KM555 provides the Bluetooth 2.1 specification. The Bluetooth module is the optimal solution for any voice or data application that requires the Bluetooth SIG standard Host Controller Interface (HCI) using a high-speed UART and PCM.
Page 53 3. BB Circuit Technical brief [Figure 3.14.3] FM Radio system architecture. LGE Internal Use Only - 54 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 54: 5Pin Interface Connector
USB/ Remote control Key ADC/ Headset left sound USW_DP USB/ Remote control interrupt/ Headset Right sound USW_ID 5~15 Power GND Copyright © 2009 LG Electronics. Inc. All right reserved. - 55 - LGE Internal Use Only Only for training and service purposes...
Page 55: Rf Circuit Technical Brief
[Figure 4.1-1] Block Diagram of RF part LGE Internal Use Only - 56 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright © 2009 LG Electronics. Inc. All right reserved. - 51 -...
Page 56 [Figure 4.1-2] RF Functional Block Diagram [Figure 4.1-2] RF Functional Block Diagram [Figure 3.15-2] RF Functional Block Diagram Copyright © 2009 LG Electronics. Inc. All right reserved. - 57 - LGE Internal Use Only Only for training and service purposes...
Page 57 MMCI1_DAT2 WLAN_SDIO[3] MMCI1_DAT3 AB17 MMC_CMD MMCI2_CMD AA17 MMC_D[0] MMCI2_DAT0 MMC_CLK MMCI2_CLK Figure 4.1-3] Schematic of RF Control Signals LGE Internal Use Only - 58 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 58: Gsm Part
Furthermore an automatic DC-offset compensation can be used (depending on the gain setting) to reduce the DC-offset at baseband-output. A programmable gain correction can be applied to correct for front end- and receiver gain tolerances. Copyright © 2009 LG Electronics. Inc. All right reserved. - 59 - LGE Internal Use Only...
Page 59: Gsm Transmitter
PGA’s as described above. LGE Internal Use Only - 60 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved.
Page 60: Front End Module Control
Implemented in the SMARTi 3GE are two outputs for direct control of GSM front end modules with two logic input pins to select RX- and TX-mode as well as low- and highband operation. Copyright © 2009 LG Electronics. Inc. All right reserved. - 61 -...
Page 61 ANT_SEL4 GPIO16 ANT_SEL5 GPIO17 ANT_SEL6 GPIO18 GPIO19 [Figure 4.2.5-2] KM555 Front End Control (Control signal from Baseband IC) LGE Internal Use Only - 62 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 62: Wcdma Part
4. RF Circuit Technical Brief [Figure 4.2.5-3] KM555 Front End Control Logic Table 4.3 WCDMA Part The single-chip transceiver is designed to fulfill the W-CDMA UTRA FDD system requirements for bands I, II, III, IV, V, VI and IX. It contains all active circuits required to simultaneously modulate an analog W-CDMA I/Q signal to the TX RF frequency and demodulate a RX RF W-CDMA signal to an I/Q baseband signal.
Page 63 An external power amplifier as well as duplex and interstage filters are needed to form a complete transmit chain for each band. LGE Internal Use Only - 64 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 64 The total VCO frequency range is divided in 256 subranges, in order to limit the VCO slope. Before the settling process of the PLL starts, a successive approximation algorithm selects the most appropriate subrange. Copyright © 2009 LG Electronics. Inc. All right reserved. - 65 - LGE Internal Use Only...
Page 65: Gsm Power Amplifier Module
Bypass Cap Connect 0.01uF bypass capacitor as close to pin as practical 8,11,4 Ground [Table 4.4-1] TQM7M5005H Pin description LGE Internal Use Only - 66 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 66: Wcdma Band1/8 Power Amplifier Module
R522 4.7p 4.7n KM555e, The Components in t [Table 4.5-1] AWT6224R Pin description Copyright © 2009 LG Electronics. Inc. All right reserved. - 67 - LGE Internal Use Only Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved.
Page 67: Wcdma Band1/8 Low Noise Amplifier
[Figure 4.6-1] Schematic Diagram of WCDMA Band1/8 LNA (BGA735L16) M555e, The Components in this are [Table 4.6-1] BGA735L16 Pin description LGE Internal Use Only - 68 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 68: Wcdma Band1 Duplexer
[Table 4.7-1] SAYFP1G95AA00B00 Pin description GND1 GND6 GND2 GND5 GND3 GND4 897.5,942.5MHz BC5 : LT69D [SDDY0004901] ->EPCOS BC8 : LT56B [SDMY0002001]->EPCOS Copyright © 2009 LG Electronics. Inc. All right reserved. - 69 - LGE Internal Use Only Only for training and service purposes...
Page 69: Wcdma Band8 Duplexer
[Table 4.8-1] LT56B Pin description Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 70 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 70: Trouble Shooting
- Connect mobile switch cable between Communication test set and DUT when you need to make a phone call. - Follow trouble shooting procedure Copyright © 2009 LG Electronics. Inc. All right reserved. - 71 - LGE Internal Use Only...
Page 72 C216 C234 C225 C226 C237 C240 C231 C241 C205 C229 2.2u 2.2u 2.2u 2.2u 2.2u 2.2u 2.2u 4.7u Copyright © 2009 LG Electronics. Inc. All right reserved. - 7 - LGE Internal Use Only Only for training and service purposes...
Page 73 C237 C240 U202 C235 LGE Internal Use Only - 74 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 75 BAT_ID RF_TEMP R116 390K (1%) R105 R123 100K PAOUT1_1 (1%) PA_LEVEL PAOUT1_2 C317 (TP1) C317 (TP2) R116 (TP3) LGE Internal Use Only - 76 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 77 2.2u 2.2u 2.2u 2.2u 2.2u 4.7u SIM SOCKET 2V9_SIM 2V9_SIM 4.7K GCA26C-6S-H15-E1500 SIM_RST SIM_CLK SIM_IO GND1 GND2 100n LGE Internal Use Only - 78 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 79: Three-Key Backlight Trouble
Copyright 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 80 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved.
Page 81 CLOSE R618 R619 R623 R621 R622 100K MMC_DETECT MMC_D[0] MMC_CLK MMC_CMD S600 DM3AT-SF-PEJ 100n S100 C5 ( TP1) LGE Internal Use Only - 82 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 82: Audio Trouble
5. Trouble shooting 5.8 Audio Trouble 5.8.1 Receiver path Copyright © 2009 LG Electronics. Inc. All right reserved. - 8 - LGE Internal Use Only Only for training and service purposes...
Page 83 BRS-181213SL08-P R419 RCV_P RXIN+ RCV_N RXIN- R420 8.2 EVLC5S0250 EVLC5S0250 C444 C443 C442 R414 EAR_GND U401 C444 C443 LGE Internal Use Only - 84 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 85 BRS-181213SL08-P R419 RCV_P RXIN+ RCV_N RXIN- R420 8.2 EVLC5S0250 EVLC5S0250 C444 C443 C442 R414 EAR_GND C439 C438 U401 LGE Internal Use Only - 86 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 86 5. Trouble shooting 5.8.3 Voice path for headset 5.8.3 Voice path for headset Copyright © 2009 LG Electronics. Inc. All right reserved. - 87 - LGE Internal Use Only Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 87 RCV_P RXIN+ RCV_N RXIN- R420 8.2 EVLC5S0250 EVLC5S0250 C444 C443 C442 R414 EAR_GND C439 C438 C432 U401 C433 LGE Internal Use Only - 88 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 88: Microphone Trouble
5. Trouble shooting 5.9 Microphone Trouble 5.9.1 Microphone for main MIC Copyright © 2009 LG Electronics. Inc. All right reserved. - 89 - LGE Internal Use Only Only for training and service purposes...
Page 89 C146 C139 MAIN_MIC_N L102 L101 L100 L103 100n 100n 100n 100n 100p VMIC_GND U101 C146 (TP3) L101 L102 LGE Internal Use Only - 90 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 91 1.5K R410 HS_MIC_N C421 2.2K FB404 BLM15BD182SN1D HS_MIC_P C420 1800 C413 C412 C448 390p VMIC_GND EAR_GND C414 C413 LGE Internal Use Only - 92 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 93 INOUT_A3 CAM_D1 INOUT_B2 INOUT_A2 CAM_D0 INOUT_B1 INOUT_A1 TP400 FL401 GB042-24S-H10-E3000 100n ICVE10184E050R101FR 100n CAM_PCLK CAM_RESET CAM_PD C2 C3 LGE Internal Use Only - 94 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 95 LCD_DATA[7] INOUT_A1 INOUT_B1 INOUT_B1 INOUT_A1 FL300 FL303 LCD_VSYNC IF_MODE[0] PIN21 C315 C300 PIN20 R310 R306 VA300 C315 (TP1) LGE Internal Use Only - 96 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 97 I2C1_SDA R627 I2C2_SDA VDD_REF TOUCH_XP TOUCH_XM R628 TOUCH_INT I2C2_SCL PENIRQ- R629 I2C1_SCL TOUCH_YP TOUCH_YM 3.3p 3.3p 3.3p 3.3p LGE Internal Use Only - 98 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 98: Wifi /Bluetooth Trouble
5. Trouble shooting 5.13 WiFi /Bluetooth Trouble Copyright © 2009 LG Electronics. Inc. All right reserved. - 99 - LGE Internal Use Only Only for training and service purposes 5.13.1 Module Part...
Page 99 Checking Test Point Description Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes LGE Internal Use Only - 100 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 100 Checking Flow Checking Flow Checking Flow Checking Flow Checking Flow Copyright © 2009 LG Electronics. Inc. All right reserved. - 101 - LGE Internal Use Only Only for training and service purposes Copyright 2008 LG Electronics. Inc. All right reserved.
Page 101 RP103K281D-TR-F C623 VOUT XTALP CLK_REQ 26MHz TG-5010LH-87N C624 C626 R617 C627 100K TP1 → CLK_REQ TP2 → XTALP LGE Internal Use Only - 102 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 102 6. You can select wanted test cases after getting an optimized power 7. Blue tooth Off - Menu(OK key) setting 4)Connectivity 1)Bluetooth 1)Turn on/Turn off Copyright © 2009 LG Electronics. Inc. All right reserved. - 10 - LGE Internal Use Only...
Page 103: Download & S/W Upgrade
S/W download. Copyright 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only - 104 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes Only for training and service purposes...
Page 104 6. Download & S/W upgrade GD510 Operational Description Revision A . Download & S/W upgrade KM555 KM555 LG Electronics LGE Property 96/116 Copyright © 2009 LG Electronics. Inc. All right reserved. - 105 - LGE Internal Use Only Only for training and service purposes...
Page 105 6. Download & S/W upgrade GD510 Operational Description Revision A KM555 KM555 KM555 - 106 - LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. LG Electronics LGE Property 97/116 Only for training and service purposes...
Page 107 6. Download & S/W upgrade GD510 Operational Description Revision A LGE Internal Use Only - 108 - Copyright © 2009 LG Electronics. Inc. All right reserved. LG Electronics LGE Property 99/116 Only for training and service purposes...
Page 108 6. Download & S/W upgrade GD510 Operational Description Revision A Remove phone for I/O cable Copyright © 2009 LG Electronics. Inc. All right reserved. LG Electronics - 109 - LGE Property LGE Internal Use Only 100/116 Only for training and service purposes...
Page 109 6. Download & S/W upgrade GD510 Operational Description Revision A Connect phone to I/O cable LGE Internal Use Only - 110 - Copyright © 2009 LG Electronics. Inc. All right reserved. LG Electronics LGE Property 101/116 Only for training and service purposes...
Page 110 GD510 Operational Description Revision A Remove phone form I/O cable KM555 KM555 KM555 KM555 LG Electronics LGE Property 102/116 Copyright © 2009 LG Electronics. Inc. All right reserved. - 111 - LGE Internal Use Only Only for training and service purposes...
Page 111 6. Download & S/W upgrade GD510 Operational Description Revision A KM555 KM555 KM555 KM555 KM555 LGE Internal Use Only - 112 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes LG Electronics LGE Property 103/116...
Page 112 6. Download & S/W upgrade GD510 Operational Description Revision A KM555 KM555 Connect phone to I/O cable Copyright © 2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes LG Electronics LGE Property...
Page 113 6. Download & S/W upgrade GD510 Operational Description Revision A KM555 KM555 KM555 KM555 LGE Internal Use Only - 114 - Copyright © 2009 LG Electronics. Inc. All right reserved. LG Electronics LGE Property 105/116 Only for training and service purposes...
Page 114: Block Diagram
[Figure 3.1] Functional Block Diagram Copyright 2008 LG Electronics. Inc. All right reserved. Only for training and service purposes Copyright © 2009 LG Electronics. Inc. All right reserved. - 115 - LGE Internal Use Only Only for training and service purposes...
Page 116: Circuit Diagram
VBUS_USB RPWRON_EN ON_SW ON_SW VBAT VBAT URXD USB_DM USB_DP UTXD OJ100 OJ103 OJ102 OJ101 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 117 - LGE Internal Use Only Only for training and service purposes...
Page 117 HSBC-3PT25-19N 2V11_RTC R214 BAT_ID C239 C214 C206 C215 C233 4.7K 100n 2.2u BAT1 NBL414R-F9J LGE Internal Use Only LGE Internal Use Only - 118 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 118 MLED OUTCP MLED1 MLED2 LCD_BL_CTRL EN_SET MLED3 MLED4 MLED5 PGND MLED6 C305 R319 C318 LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 119 - LGE Internal Use Only Only for training and service purposes...
Page 119 R419 RCV_P RXIN+ RCV_N RXIN- R420 8.2 EVLC5S0250 EVLC5S0250 C444 C443 C442 R414 EAR_GND LGE Internal Use Only LGE Internal Use Only - 120 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 120 TX SAW : BAND8 SAFEA897MFL0F00 [SFSY0037502] WCDMA_900 : BAND8 RX SAW : BAND8 SAFEB924MFL0F00 [SFSY0024301] LGE Internal Use Only Copyright © 2009 LG Electronics. Inc. All right reserved. - 121 - LGE Internal Use Only Only for training and service purposes...
Page 121 R629 MAIN_MIC_N I2C1_SCL TOUCH_XM TOUCH_YP TOUCH_YP TOUCH_YM AXK7L10227G 3.3p 3.3p 3.3p 3.3p 100p VMIC_GND LGE Internal Use Only LGE Internal Use Only - 122 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 122: Bga Pin Map
9. BGA Pin Map 9. BGA Pin Map 9. BGM Pin Map PMB 8878(S-GOLD3H) : NC Pin Copyright © 2009 LG Electronics. Inc. All right reserved. - 12 - LGE Internal Use Only Only for training and service purposes...
Page 123 PMB6821 Pin Configuration (Top View) PMB6821 Pin Configuration (Top View) PMB6821 Pin Configuration (Top View) PMB6821 Pin Configuration (Top View) LGE Internal Use Only - 124 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 124 9. BGA Pin Map K55H1HACB-B060 K55H1HACB-B060 *** NC pin is not used *** NC pin is not used Copyright © 2009 LG Electronics. Inc. All right reserved. - 125 - LGE Internal Use Only Only for training and service purposes Copyright 2008 LG Electronics.
Page 126: Pcb Layout
U502 Ant. SW U300 Charging IC U505 Not SMT U501 2G PAM ANT501 ANT Connector U501 2G PAM Copyright © 2009 LG Electronics. Inc. All right reserved. - 127 - LGE Internal Use Only Only for training and service purposes...
Page 127 Proximity sensor Camera connector U400 Camera LDO / No LCD LD1, LD2, LD3 Key Backlight MIC1 Main Mic. LGE Internal Use Only - 128 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 128: Rf Calibration
2008 LG Electronics. Inc. All right reserved. Only for training and service purposes 2.2. Execute “HK_36.exe” Copyright ⓒ 2008 LG Electronics. Inc. All right reserved. LGE Internal Use Only Only for training and service purposes Copyright © 2009 LG Electronics. Inc. All right reserved.
Page 129 11. RF Calibration 11.2.2. Click “SETTING” Menu 11.2.3. Setup “Ezlooks” menu such as the following figure LGE Internal Use Only - 10 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 130 11. RF Calibration 11.2.4. Setup “Line System” menu such as the following figure 11.2.5 Setup Logic operation such as the following figure. Copyright © 2009 LG Electronics. Inc. All right reserved. - 11 - LGE Internal Use Only Only for training and service purposes...
Page 131 11. RF Calibration 11.2.6. Select “MODEL”. 11.2.7. Click “START” for RF calibration 11.2.8. RF Calibration finishes LGE Internal Use Only - 12 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 132 2. Calibration program automatically changes either “normal mode” or “ptest mode”. 3. Phone operation Mode < Normal Mode> <Ptest Mode> Copyright © 2009 LG Electronics. Inc. All right reserved. - 1 - LGE Internal Use Only Only for training and service purposes...
Page 134: Exploded View & Replacement Part List
12. Exploded view & Replacement part list 12.1 Exploded view Copyright © 2009 LG Electronics. Inc. All right reserved. - 135 - LGE Internal Use Only Only for training and service purposes...
Page 136: Replacement Parts
COMPLEX, (empty), , , , , COLOR WITHOUT MPBU00 PAD,CONNECTOR MPBU0078001 COMPLEX, (empty), , , , , COLOR Copyright © 2009 LG Electronics. Inc. All right reserved. - 17 - LGE Internal Use Only Only for training and service purposes...
Page 137 COMPLEX, (empty), , , , , COLOR WITHOUT MTAD00 TAPE,WINDOW MTAD0112701 COMPLEX, (empty), , , , , COLOR LGE Internal Use Only - 18 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 138 TAPE,CAMERA MTAK0028701 COMPLEX, (empty), , , , , COLOR WITHOUT MLAZ00 LABEL MLAZ0038301 PID Label 4 Array COLOR Copyright © 2009 LG Electronics. Inc. All right reserved. - 19 - LGE Internal Use Only Only for training and service purposes...
Page 139: Main Component
2.0 V,0.1 A,10*3.6 ,12mm linear motor ,; ,3V , , , , , , , SPKY00 PCB,SIDEKEY SPKY0076601 POLYI ,.2 mm,DOUBLE ,Power(KM555) ,; , , , , , , , , , ASSY ,8 ohm,90 dB,1812 mm,3.0T 10mm ,; , , , , , , SUSY00 SPEAKER...
Page 140 ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C141 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 141 - LGE Internal Use Only Only for training and service purposes...
Page 141 ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C141 CAP,CERAMIC,CHIP ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only - 142 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 142 ECCH0000198 2.2 uF,6.3V ,M ,X5R ,TC ,1005 ,R/TP C246 CAP,CHIP,MAKER ECZH0003103 0.1 uF,10V ,K ,X7R ,HD ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 14 - LGE Internal Use Only Only for training and service purposes...
Page 143 ECCH0000179 22 nF,16V ,K ,X5R ,HD ,1005 ,R/TP C415 CAP,CERAMIC,CHIP ECCH0000129 120 pF,50V,J,NP0,TC,1005,R/TP C419 CAP,CERAMIC,CHIP ECCH0000117 27 pF,50V,J,NP0,TC,1005,R/TP LGE Internal Use Only - 144 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 144 ECCH0009101 0.1 uF,6.3V ,K ,X5R ,TC ,0603 ,R/TP C512 CAP,CERAMIC,CHIP ECCH0000196 0.75 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 145 - LGE Internal Use Only Only for training and service purposes...
Page 145 ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C543 CAP,CERAMIC,CHIP ECCH0000122 47 pF,50V,J,NP0,TC,1005,R/TP C544 CAP,CERAMIC,CHIP ECCH0000113 18 pF,50V,J,NP0,TC,1005,R/TP LGE Internal Use Only - 146 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 146 ECCH0009101 0.1 uF,6.3V ,K ,X5R ,TC ,0603 ,R/TP C585 CAP,CHIP,MAKER ECZH0000846 8.2 pF,50V ,C ,NP0 ,TC ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 147 - LGE Internal Use Only Only for training and service purposes...
Page 147 ECCH0000143 1 nF,50V,K,X7R,HD,1005,R/TP C639 CAP,CERAMIC,CHIP ECCH0000109 8 pF,50V,D,NP0,TC,1005,R/TP C640 CAP,CHIP,MAKER ECZH0001215 1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP LGE Internal Use Only - 148 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 148 FILTER,EMI/POWER SFEY0013201 SMD ,1608 ,EMI-ESD Filter, 4ch, 14V, 15pF, 100ohm FL301 FILTER,EMI/POWER SFEY0006501 SMD ,3 TERMINAL EMI FILTER Copyright © 2009 LG Electronics. Inc. All right reserved. - 149 - LGE Internal Use Only Only for training and service purposes...
Page 149 1.5 nH,S ,1005 ,R/TP , L510 INDUCTOR,CHIP ELCH0001413 22 nH,J ,1005 ,R/TP ,PBFREE L512 INDUCTOR,CHIP ELCH0004721 2.2 nH,S ,1005 ,R/TP , LGE Internal Use Only - 150 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 150 470 ohm,1/20W(0.05W) ,F ,0603 ,R/TP R114 RES,CHIP ERHY0009504 1 Kohm,1/20W(0.05W) ,J ,0603 ,R/TP R115 RES,CHIP ERHY0009505 10 Kohm,1/20W(0.05W) ,J ,0603 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 151 - LGE Internal Use Only Only for training and service purposes...
Page 151 100 Kohm,1/16W ,J ,1005 ,R/TP R223 RES,CHIP,MAKER ERHZ0000437 2 Kohm,1/16W ,J ,1005 ,R/TP R224 RES,CHIP,MAKER ERHZ0000204 100 Kohm,1/16W ,F ,1005 ,R/TP LGE Internal Use Only - 152 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 152 2200 ohm,1/16W ,J ,1005 ,R/TP R411 RES,CHIP,MAKER ERHZ0000483 47 ohm,1/16W ,J ,1005 ,R/TP R412 RES,CHIP,MAKER ERHZ0000445 220 Kohm,1/16W ,J ,1005 ,R/TP Copyright © 2009 LG Electronics. Inc. All right reserved. - 15 - LGE Internal Use Only Only for training and service purposes...
Page 153 BGA ,389 PIN,R/TP ,MP-EH / HSDPA 7.2 Mbps / Display U101 EUSY0355101 HVGA /3M CAM / H.263 / AGPS ,; ,IC,Digital Baseband Processor LGE Internal Use Only - 154 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 154 5.5 V, ,SMD ,1005, 50pF VA300 VARISTOR SEVY0001001 14 V, ,SMD ,50pF, 1005 VA301 VARISTOR SEVY0005201 5.5 V, ,SMD ,1005, 50pF Copyright © 2009 LG Electronics. Inc. All right reserved. - 155 - LGE Internal Use Only Only for training and service purposes...
Page 155 ECCH0004904 1 uF,6.3V ,K ,X5R ,TC ,1005 ,R/TP C411 CAP,CERAMIC,CHIP ECCH0000138 390 pF,50V,K,X7R,HD,1005,R/TP C418 CAP,CERAMIC,CHIP ECCH0000138 390 pF,50V,K,X7R,HD,1005,R/TP LGE Internal Use Only - 156 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 156 RES,CHIP,MAKER ERHZ0000405 10 Kohm,1/16W ,J ,1005 ,R/TP SPFY PCB,MAIN SPFY0206201 FR-4 ,0.8 mm,LX-BUMP 8 ,L1B1(KM555) ,; , , , , , , , , , U303 EUSY0376201 ,8 ,R/TP , ,; ,IC,PMIC WDFN-8L ,8 PIN,R/TP ,300mA/300mA 2.8V/1.8V Dual U400 EUSY0319001...
Page 157 5.5 V, ,SMD ,1005, 50pF Main ,3.0 inch ,240*400 ,43.08*75.4*1.8t ,262K ,TFT ,TM SVLM00 LCD MODULE SVLM0035201 C, 14 ,S6D14E0 , , LGE Internal Use Only - 158 - Copyright © 2009 LG Electronics. Inc. All right reserved. Only for training and service purposes...
Page 158: Accessory
100-240V ,5060 Hz,5.1 V,.7 A,CE / GOST ,AC-DC SSAD00 ADAPTOR,AC-DC SSAD0032701 ADAPTOR ,; ,150Vac~350Vac ,4.75Vdc~5.25Vdc ,700mA ,5060 , ,WALL 2P ,USB , Copyright © 2009 LG Electronics. Inc. All right reserved. - 159 - LGE Internal Use Only Only for training and service purposes...

LG KM555 Service Manual

1 Introduction

2 Performance

3 BB Circuit Technical Brief

4 RF Circuit Technical Brief

5 Trouble Shooting

6 Download & S/W Upgrade

7 Block Diagram

8 Circuit Diagram

9 BGA Pin Map

10 PCB Layout

11 RF Calibration

12 Exploded View & Replacement Part List

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