LG KB770 Service Manual Download Page 62 | Manualshive

Page: 62 / 207

background image

- 63 -

Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes

LGE Internal Use Only

3. TECHNICAL BRIEF

3.10.4. Key Pad

There are 15 main key buttons on touch screen , 3 multi-function keys and 4 side keys in
Figure. Shows the Keypad circuit. ‘END’ Key is connected to PMIC(PM6650).

Table 3.10.4 Key Matrix Mapping Table

N/A

CLR

ROW(3)

SEND

LOCK

ROW(2)

CAMERA capture

CAMERA Auto

Focus

ROW(1)

DOWN

UP

ROW(0)

COL(1)

COL(0)

SEND

SW101

DOWN

UP

CLR

LOC

KEY_ROW(2)

KEY_ROW(0)

KEY_ROW(3)

KEY_COL(0)

KEY_COL(1)

KEY_ROW(1)

END

PM_ON_SW_N

Figure 3.10.4 Main Keypad Circuit

«
...
60
61
62
63
64
...
»

Summary of Contents for KB770

Page 1: ...Service Manual Model KB770 Internal Use Only Service Manual KB770 Date November 2008 Issue 1 0 ...

Page 2: ...ent Description 79 4 2 WCDMA RF Signal Path 80 4 3 GSM RF Signal Path 81 4 4 Checking VCTCXO Block 82 4 5 Checking Front End Module Block 85 4 6 Checking WCDMA Block 87 4 7 Checking GSM Block 94 4 8 Checking Bluetooth Block 100 4 9 Power ON Troubleshooting 103 4 10 Charger Troubleshooting 105 4 11 USB Troubleshooting 107 4 12 USIM Detect Troubleshooting 108 4 13 Camera Troubleshooting 110 4 14 Key...

Page 3: ... 4 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 4: ...vent unauthorized use The manufacturer does not warrant that this product is immune from the above case but will prevent unauthorized use of common carrier telecommunication service of facilities accessed through or connected to it The manufacturer will not be responsible for any charges that result from such unauthorized use B Incidence of Harm If a telephone company determines that the equipment...

Page 5: ...as the following to the end user F Pictures The pictures in this manual are for illustrative purposes only your actual hardware may look slightly different G Interference and Attenuation A phone may interfere with sensitive laboratory equipment medical equipment etc Interference from unsuppressed engines or electric motors may cause problems H Electrostatic Sensitive Devices ATTENTION Boards which...

Page 6: ...er 4 0V normal 1000 mAh Li ion inner pack Talk Time Over 180 min WCDMA Tx 12 dBm Voice with 1000mAh Over 180 min GSM Tx Max Voice Standby Time Over 250 Hrs WCDMA DRX 1 28 with 1000mAh Over 320 Hrs GSM Paging period 5 Antenna Internal type LCD 400 x 240 pixel TFT LCD Backlight White LED Back Light Camera 3 0 Mega CMOS VGA CMOS Vibrator Yes LED Indicator No MIC Yes Receiver Yes Earphone Jack Yes 18 ...

Page 7: ...S 9k 1GHz 39dBm 100k 1GHz 39dBm 1G A MHz 33dBm A M B MHz 39dBm MS allocated Channel 1G 12 75GHz 33dBm B M 12 75GHz 33dBm 100k 880MHz 60dBm 100k 880MHz 60dBm 880M 915MHz 62dBm 880M 915MHz 62dBm 915M 1GHz 60dBm 915M 1GHz 60dBm 1G A MHz 50dBm 1G A MHz 50dBm A M B MHz 56dBm A M B MHz 56dBm 1 Conducted Spurious Emission Idle Mode B M 12 5GHz 50dBm B M 12 5GHz 50dBm In case of DCS A 1710 B 1785 In case ...

Page 8: ... 0 1ppm 0 1ppm 5 RMS 5 RMS 4 Phase Error 20 PEAK 20 PEAK 3dB below reference sensitivity 3dB below reference sensitivity RA250 200Hz RA250 250Hz HT100 100Hz HT100 250Hz TU50 100Hz TU50 150Hz 5 Frequency Error Under Multipath and Interference Condition TU3 150Hz TU1 5 200Hz 0 100kHz 0 5dB 0 100kHz 0 5dB 200kHz 30dB 200kHz 30dB 250kHz 33dB 250kHz 33dB 400kHz 60dB 400kHz 60dB 600 1800kHz 66dB 600 180...

Page 9: ...t should be Less than 55dB below the level of Wanted signal Power control Power Toleranc e Power control Power Toleranc e Level dBm dB Level dBm dB 5 33 3 0 30 3 6 31 3 1 28 3 7 29 3 2 26 3 8 27 3 3 24 3 9 25 3 4 22 3 10 23 3 5 20 3 11 21 3 6 18 3 12 19 3 7 16 3 13 17 3 8 14 3 14 15 3 9 12 4 15 13 3 10 10 4 16 11 5 11 8 4 17 9 5 12 6 4 18 7 5 13 4 4 19 5 5 14 2 5 8 Transmitter Output Power 15 0 5 ...

Page 10: ...r Loop Power control in uplink 1 8 12 16 24 5 Minimum Output Power 50dBm 3 84MHz 6 Out of synchronization handling of output power Qin Qout PCCH quality levels Toff DPCCH Ior 22 28dB Ton DPCCH Ior 24 18dB 7 Transmit OFF Power 56dBm 3 84MHz 8 Transmit ON OFF Time Mask 25us PRACH CPCH uplinlk compressed mode 9 Change of TFC 25us Power varies according to the data rate DTX DPCH off minimize interfere...

Page 11: ... BW 71dBm f 1805 1880MHz 100K BW 15 Transmit Intermodulation 31dBc 5MHz Interferer 40dBc 41dBc 10MHz Interferer 40dBc 16 Error Vector Magnitude EVM 17 5 20dBm 12 2K 1DPDCH 1DPCCH 17 Transmit OFF Power 15dB SF 4 768Kbps Multi code transmission 3 Receiver GSM Mode No Item GSM DCS PCS 1 Sensitivity TCH FS Class II 105dBm 105dBm 2 Co Channel Rejection TCH FS Class II RBER TU high FH C Ic 7dB Storage 3...

Page 12: ...ty ACS 33dB UE 20dBm output power Class3 56dBm 3 84MHz 10MHz UE 20dBm output power Class3 4 In band Blocking 44dBm 3 84MHz 15MHz UE 20dBm output power Class3 44dBm 3 84MHz f 2050 2095 and 2185 2230MHz UE 20dBm output power Class3 30dBm 3 84MHz f 2025 2050 and 2230 2255MHz UE 20dBm output power Class3 5 Out band Blocking 15dBm 3 84MHz f 1 2025 and 2255 12500MHz UE 20dBm output power Class3 6 Spurio...

Page 13: ...and by and Voice Call Test Condition LCD backlight Off VT Test Condition Speaker off LCD backlight On 2 5 RSSI BAR Level Change WCDMA GSM BAR 7 91 dBm 92 dBm BAR 7 6 5 93 2 dBm 94 2 dBm BAR 6 5 4 105 2 dBm 98 2 dBm BAR 4 3 2 110 2 dBm 102 2 dBm BAR 3 2 1 112 2 dBm 105 2 dBm BAR 1 0 114 2 dBm 107 2 dBm 2 6 Battery BAR Indication Standby Bar 3 Over 3 77 0 05V Bar 3 2 3 77 0 05V Bar 2 1 3 67 0 05V Ba...

Page 14: ...nding INS Max 64 dBm0p Nor Under 58 dBPA 6 Idle Noise Receiving INR MS Max Under 58 dBPA 7 Sending Loudness Rating SLR 7 3 dB Nor 6 3 dB 8 Receiving Loudness Rating RLR Max 13 3 dB 9 Side Tone Masking Rating STMR Min 25 dB 10 Echo Loss EL Min 40 dB 11 Idle Noise Sending INS Max 55 dBm0p Nor Under 45 dBPA 12 Idle Noise Receiving INR Headset Max Under 40 dBPA 13 TDMA Noise GSM Power Level 5 DCS PCS ...

Page 15: ...RFORMANCE 2 8 Charging Charging Method CC CV Constant Current and Constant Voltage Maximum Charging Voltage 4 2 V Maximum Charging Current 600 mA Normal Battery Capacity 1000 mAh Charging Time Max 3 hours except for trickle charging time Full charging indication current charging icon stop current 80mA Cut off voltage 3 2 V ...

Page 16: ... RTR RFR LO interfaces No External VCOs 1 2 LO Generation Distribution VCO PLL 1 Fref Quadrature Downconverter Quadrature Downconverter s O I l a t i g i D s l o r t n o c Quadrature Upconverter LPF DC Correction LPF DC Correction LPF LPF DAC _ REF VDDM Quadrature Upconverter BPF BPF BPF BPF F P L VCO PLL 2 F ref F P L Quadrature Downconverter LO Generation Distribution Power Detector ctls W S H B...

Page 17: ...sceiver IC These baseband outputs are shared with the UMTS receiver and routed to the MSM IC for further signal processing The GSM EDGE transmit path employs one stage of up conversion and in order to improve efficiency is divided into phase and amplitude components to produce an open loop Polar topology 1 The on chip quadrature up converter translates the GMSK modulated signal or 8 PSK modulated ...

Page 18: ...ple operating bands and modes to share the same antenna In KB770 a common antenna connects to one of six paths 1 UMTS 2100 Rx Tx 2 EGSM 900 Rx 3 EGSM 900 Tx 4 DCS 1800 Rx and 5 DCS 1800 PCS 1900 Tx High Band Tx s share the same path 6 PCS 1900 Rx UMTS operation requires simultaneous reception and transmission so the UMTS Rx Tx connection is routed to a duplexer that separates receive and transmit ...

Page 19: ...ls in place of frequency duplexers this is accomplished in the switch module The GSM900 DCS1800 and PCS1900 receive signals are routed to the RTR6275 through band selection filters and matching networks that transform single ended 50W sources to differential impedances optimized for gain and noise figure The RTR input uses a differential configuration to improve second order inter modulation and c...

Page 20: ... 21 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF Figure 3 2 1 RTR6275 RX feature ...

Page 21: ...ohm The low band GSM Tx path also includes a Tx band SAW filter to remove noise spurious components and noise that would be amplified by the PA and appear in the GSM Rx band The RTR6275 transmitter outputs HB_RF_OUT2 and LB_RF_OUT1 include on chip output matching inductors 50ohm output impedance is achieved by adding a series capacitor at the output pins The capacitor value may be optimized for sp...

Page 22: ... input is provided with an on chip LNA that amplifies the signal before a second stage filter that provides differential downconverter This second stage input is configured differentially to optimize second order intermodulation and common mode rejection performance The gain of the UMTS frontend amplifier and the UMTS second stage differential amplifier are adjustable under MSM control to extend t...

Page 23: ...tput is routed to its power amplifier through a bandpass filter and delivers fairly high level signals that are filtered and applied to the PA Transmit power is delivered from the duplexer to the antenna through the switch module The transceiver LO synthesizer is contained within the RTR6275 IC with the exception of the off chip loop filter components and the VC TCXO This provides a simplified des...

Page 24: ... 25 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF Figure 3 3 2 RTR6275 IC functional block diagram ...

Page 25: ...d synthesizer PLL2 provides the LO for the UMTS 2100 receiver An external TCXO input signal is required to provide the synthesizer frequency reference to which the PLL is phase and frequency locked The RTR6275 IC integrates most of PLL loop filter components on chip except two off chip loop filter series capacitors and significantly reduces off chip component requirement With the integrated fracti...

Page 26: ...uplexer Rx band isolation value is about 46 7 dB Tx band isolation the transmit channel power also leaks into the receiver In this case the leakage is outside the receiver passband but at a relatively high level It combines with Rx band jammers to create cross modulation products that fall in band to desensitize the receiver The required Tx band isolation depends on the PA channel power and Tx ban...

Page 27: ...eet RF system specification DNI C155 51 R124 L121 2 2nH 6 GND1 7 GND2 GND3 9 PGND 11 RFIN 2 8 RFOUT VBATT 1 10 VCC VEN 5 4 VMODE1 3 VMODE2 U102 AWT6279R 3 3p R122 3 ANT 4 PGND RX 1 2 TX ACMD 7602 FL102 100p C159 C148 1u C154 100p C158 100p 0 R123 C146 6 8nH C156 1 2p C143 10u 15p C153 2 7nH C151 U103 LDC151G9520Q 359 COU 3 2 IN OUT 1 TER 4 L120 0 L122 NA 100p C147 C157 DNI EFCH1950TDF1 FL103 2 G1 ...

Page 28: ...ed on internal layers Input power management Valid external supply attachment and removal detection Supports unregulated closed loop external charger supplies and USB supplies as input power sources Supports lithium ion main batteries Trickle constant current constant voltage and pulsed charging of the main battery Supports coin cell backup battery including charging Battery voltage detectors with...

Page 29: ...programmable from 1 2 to 3 1V in 100 mV increments Speaker driver with programmable gain turn on time and muting differential operation drives external 8 Ω speakers with volume controlled 500 mW IC level interfaces MSM device compatible 3 line SBI for efficient initialization status and control Supports the MSM device s interrupt processing with an internal interrupt manager Many functions monitor...

Page 30: ... 31 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF Figure 3 5 5 1 PM6650 Interface with MSM ...

Page 31: ...ovsk j v lu j Gz v G z t t kp yjGv j j v j G j v y wvu ylzl u y G Gj ylm GVG w Gv Gj kk tzt kk ym kk shu w T j z Gi p p t nuk zs n pVm pVm pVm pVm G j v j T s G G j j th zls pth zls t ih kl os i ylm ylm G pVvG yln zi j s u yln tztw ht v ylm ylm v GGGGGOtww_P ziTv n y ptGs zi zlW zi vl zi kh y pt t pvGOtwwXXP y pt t yz GOtww P y pt t jsrGOtww P zi k w zi k t zi pk y pt yz GOtww P y pt jsrGOtwwXWP y...

Page 32: ...nds the other supports the DCS1800 and PCS1900 bands Both PA blocks share common power supply pins to distribute current The GaAs die the silicon die and the passive components are mounted on a multi layer laminate substrate and the entire assembly is encapsulated with plastic overmold 3 5 6 GSM PAM U101 SKY77329 7 75dB 110 R120 C140 DNI 15nH L116 C126 10p C128 33u 19 PGND4 20 21 PGND5 PGND6 22 PG...

Page 33: ...to meet these conditions Far out of band signals ranging from DC up to the first band of particular concern and from the last band of particular concern to beyond three times the highest passband frequency Tx band leakage the transmitter channel power although attenuated by the duplexer still presents a cross modulation threat in combination with Rx band jammers The RF filter must provide rejectio...

Page 34: ...ICAL BRIEF 3 5 8 Bluetooth Sub_U101 RB04 The MSM6280 includes BT baseband embedded BT 1 1 compliant baseband core so the other bluetooth components are an bluetooth RF module and Antenna Figure 3 5 8 shows the bluetooth system architecture in the KB770 Figure3 5 8 Bluetooth system architecture MSM6280 Bluetooth baseband RB04 ...

Page 35: ... the DVB H T signal from the GSM interference which is near the DVB H T signal band First DVB H T signal passes through the antenna and the GSM rejection filter And the tuner in DVB H T IC receives signal from the filter and passes the signal over to the demodulator which demodulates the receiving signal and passes it to the DSP DSP receives the signal from the demodulator and decodes the signal s...

Page 36: ...he function of the RFVGA is to amplify the signal after LNA while adding as little noise as possible It should be linear enough to handle all in band interferes and GSM900 interferer The function of the WBD is to measure the amplitude on the output of RFVGA sio that the digital baseband demodulator knows if or how far from compression RFVGA is MIXER The function of the MIXER is to down convert the...

Page 37: ... 38 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF Figure3 5 9 2 Integrated Tuner Block Diagram in DVB H T IC ...

Page 38: ...ed tuner uses direct conversion technology for low power consumption Dual AGC BB RF is implemented in order to offer very high dynamic range control through digital A digital filter with high rejection capability is added to cope with adjacent channels Combined with the interpolation function it allows the circuit to demodulate 8 7 or 5 MHz channels without changing the analog front end Host Inter...

Page 39: ... DVB H T interface block diagram is shown in below Figure In the DVB H T system DSP MSM both are related to control the demodulator Each interface is shown in below figure Each control signals are explained in table Interrupt signal IRQ Ready signal RDY Address signal ADDR 1 2 DATA signal DATA 0 7 Write Enable WE Chip Select CS Output Enable OE Note Name Table 3 5 9 4 DVB H T Interface ...

Page 40: ...terval 1 8 DVB T 89 6 dBm for MFER 5 BW 7 61 MHz Modulation 16QAM Code rate Guard interval 1 4 DVB H TIM 95 6 dBm for MFER 5 BW 7 61 MHz Modulation QPSK Code rate Guard interval 1 8 DVB H H3G Reference Sensitivity Level 470 862 MHz DVB T DVB H TIM 470 750 MHz DVB H H3G Receive Frequency Specification Item Average Under 400mA Same as Phone Deep Sleep state DVB T Average Under 300mA Same as Phone De...

Page 41: ...s HSDPA ARM Jazelle Java hardware acceleration for faster Java based games and other applets QDSP4000 high performance DSP cores Integrated gpsOne position location technology functionality Integrated Bluetooth 1 2 baseband processor for wireless connectivity to peripherals Qcamera with 15 fps QVGA viewfinder resolution and support for 4 MP camera sensors Direct interface to digital camera module ...

Page 42: ... 43 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF 3 6 2 Block Diagram MSM6280 Figure 3 6 2 MSM6280 block diagram ...

Page 43: ...uplink supports the following specifications The uplink provides the following UE support One physical channel eight TrCH and 16 TrBks starting at any frame boundary A maximum data rate of 384 kbps Full SF range support from 4 to 256 SMS CS and PS PS data rate 384 kbps DL 384 kbps UL CS data rate 64 kbps DL 64 kbps UL AMR all rates 3 7 3 HSDPA features The MSM6280 device supports the HSDPA release...

Page 44: ...ure Voice features FR EFR AMR HR A5 1 A5 2 and A5 3 ciphering Circuit switched data features 9 6k 14 4k Fax Transparent and non transparent modes for CS data and fax No sub rates are supported 3 7 5 GPRS features Packet switched data GPRS DTM Simple Class A operation Multi slot class 12 data services CS schemes CS1 CS2 CS3 and CS4 GEA1 GEA2 and GEA3 ciphering Maximum of four Rx timeslots per frame...

Page 45: ...e Harvard cached architecture Higher internal CPU clock rate with on chip cache Java hardware acceleration Enhanced memory support Please note that NOR PSRAM will not be supported on MSM6280 75 MHz and 90 MHz bus clock for SDRAM 32 bit SDRAM Dual memory buses separating the high speed memory subsystem EBI1 from low speed peripherals EBI2 such as LCD panels 1 8 V or 2 6 V memory interface support e...

Page 46: ...rs up to 4 megapixel with 15 fps capture rate 15 fps QVGA viewfinder Qtv Audio and video decoder that supports VOD MOD and Broadcast multimedia services Audio Codecs supported AMR NB AAC AAC Plus Enhanced AAC Plus Windows Audio v9 RealAudio v8 Integrated stereo wideband Codec for music digital clips CMX Video Codecs supported MPEG 4 H 263 H 264 Windows Media v9 and RealNetworks v10 Video telephony...

Page 47: ...2 simultaneous polyphonic tones 44 kHz sampling rate 512 kB wave table Support of universal file formats Standard MIDI Format SMF SP MIDI SMAF Audio playback MA 2 MA 3 MA 5 XMF OLS MFil requires Docomo license PNG decoder Pitch bend range support LED vibrate support Scalable Vector Graphics SVG Tiny 1 1 SVG Tiny 1 2 MLZ decoder Integrated PNG SAF A T Table 3 7 10 Summary of MSM6280 device feature ...

Page 48: ...R In addition the QDSP4000 has modules to support the following audio functions DTMF tone generation DTMF tone detection Tx Rx volume controls Tx Rx automatic gain control AGC Rx Automatic Volume Control AVC EarSeal Echo Canceller ESEC Acoustic Echo Canceller AEC Noise Suppression NS and programmable 13 tap Type I FIR Tx Rx compensation filters The MSM6280 device s integrated ARM9TDMI processor do...

Page 49: ...l RAM ROM general purpose chip selects parallel LCD interface and a UART interface The function of these pins is documented in the various software releases 3 7 17 UART The MSM6280 device employs three UARTs UART1 has dedicated pins while UART2 and UART3 share multiplexed pins UART1 for data UART2 can be used for USIM interface UART3 for data 3 7 18 USB The MSM6280 device integrates a universal se...

Page 50: ...er the appropriate handset electronics It monitors and controls the power sources detecting which sources are applied verifying that they are within acceptable operational limits and coordinates battery and coin cell recharging while maintaining the handset electronics supply voltages Eight programmable output voltages are generated using low dropout voltage regulators all derived from a common tr...

Page 51: ... 52 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF Figure 3 8 2 PM6650 Functional Block Diagram ...

Page 52: ...ascertain whether a valid external supply is applied or not For additional accuracy or to capture variations over time this voltage is routed internally to the housekeeping ADC via the analog multiplexer PM6650 circuits monitor voltages at VCHARGER and ICHARGE pins to determine which supply should be used and when to switch between the two supplies These pins are connected to the Source or emitter...

Page 53: ...ry enabled through SBI control and powered from VDD is provided by the PM6650 IC The trickle charger is on chip programmable current source that supplies current from VDD to pin VBAT Trickle charging can be used for lithium ion and nickel based batteries with its performance specified below 3 2V The charging current is set to 80mA mA 100 80 60 Trickle Current Unit Max Typ Min Parameter ...

Page 54: ... Voltage Charging Constant voltage charging begins when the battery voltage reaches a target voltage 4 2V The end of constant voltage charging is commonly detected 10 of the full charging current Charging Method CC CV Constant Current Constant Voltage Maximum Charging Voltage 4 2V Maximum Charging Current 600mA Nominal Battery Capacity 1000mAh Charger Voltage 5 1V Charging time Max 3h Except time ...

Page 55: ...AM Synchronous DRAM memories supported Byte addressable memory supporting 8 bit 16 bit and 32 bit accesses Pseudo SRAM PSRAM memory support y EBI2 Features Support for asynchronous FLASH and SRAM 16bit 8bit Interface support for byte addressable 16bit devices UB_N LB_N signals 2Mbytes of memory per chip select Support for 8 bit 16bit wide NAND flash Support for parallel LCD interfaces port mapped ...

Page 56: ...ly 3 TECHNICAL BRIEF MSM6280 SDRAM 1Gbits 512M x 2 NAND 2Gbits DATA 31 0 ADDRESS 15 0 WE CS CAS RAS CLK_EN CLK DQM 3 0 NAND_CS NAND_RE NAND_WE NAND_CLE NAND_WP NAND_ALE NAND_READY DATA 7 0 EBI1 EBI2 External Memory Micro SD card SDCC_DATA 3 0 SDCC_CMD SDCC_CLK Figure 3 9 Simplified Block Diagram of Memory Interface ...

Page 57: ...I_IM_CH0 V25 I_IM_CH1 AC25 I_IP_CH0 W25 I_IP_CH1 I_OUT B13 I_OUT_N A13 GRFC7_GPIO10 T23 B4 GRFC8_GPIO11 GRFX6_GPIO9 T19 H17 GP_PDM1_PA_RAN_GE0 D17 GP_PDM2_PA_RAN_GE1 B8 GRFC0_GPIO3 A8 GRFC1_AUX_SBDT_GPIO4 D9 GRFC2_GPIO5 F10 GRFC3_GPIO6 GRFC4_AUX_SBCK_GPIO7 H10 D11 GRFC5_AUX_SBST_GPIO8 F12 DAC_REF AUX_PCM_CLK_GRFC14_GPIO80 K19 N21 AUX_PCM_DIN_GRFC13_GPIO14 AUX_PCM_DOUT_GRFC12_GPIO103 G4 AUX_PCM_SYN...

Page 58: ...NICAL BRIEF B the others y TRK_LO_ADJ TCXO 19 2M Control y PA_ON WCDMA 2100 TX Power Amp Enable y ANT_SEL 0 2 Ant Switch Module Mode Selection WCDMA GSM Tx Rx DCS PCS Tx Rx y GSM_PA_BAND GSM DCS PCS Band Selection of Power Amp y GSM_PA_RAMP Power Amp Gain Control of APC_IC y GSM_PA_EN Power Amp Gain Control Enable of APC_IC ...

Page 59: ...et USIM Reset y USIM_Data USIM Data T Rx 3 10 2 2 UART Interface UART signals are connected to MSM GPIO through IO connector with 115200 bps speed Data_Tx Data_Rx Note UART_TXD UART_RXD Name GPIO_95 GPIO_96 GPIO_Map Table 3 10 2 2 UART Interface MSM6280 PM6650 USIM USIM CLK USIM Reset USIM Data USIM Data USIM Reset USIM CLK Figure 3 10 2 1 SIM Interface VREG_UIM 2 85V MSM6280 PM6650 USIM USIM CLK ...

Page 60: ...cification Revision 2 0 The USB Specification Revision 1 1 defines two speeds of operation namely low speed 1 5 Mbps and full speed 12 Mbps both of which are supported by the MSM6280 USB Data to Host USB_D USB Data to Host USB_D USB_Power From Host PC Out Put Enable of Transceiver Data to from MSM Data to from MSM Note USB_VBUS USB_OE_N USB_DAT USB_SE0 Name Table 3 10 2 3 USB Signal Interface USB_...

Page 61: ...parameters such as battery voltage temperature and RF power levels The MSM6280 device has six analog input pins which are multiplexed to the input of the internal HKADC Table 3 10 3 HKADC channel table Figure 3 10 3 MSM6280HKADC Block diagram PCB Version Check PCB_Rev_ADC HKADC4 TV_OUT cable detection MIC2P HKADC2 Headset remote key detection RMT_ADC HKADC3 Battery Temperature Check Battery voltag...

Page 62: ...uch screen 3 multi function keys and 4 side keys in Figure Shows the Keypad circuit END Key is connected to PMIC PM6650 Table 3 10 4 Key Matrix Mapping Table N A CLR ROW 3 SEND LOCK ROW 2 CAMERA capture CAMERA Auto Focus ROW 1 DOWN UP ROW 0 COL 1 COL 0 SEND SW101 DOWN UP CLR LOC KEY_ROW 2 KEY_ROW 0 KEY_ROW 3 KEY_COL 0 KEY_COL 1 KEY_ROW 1 END PM_ON_SW_N Figure 3 10 4 Main Keypad Circuit ...

Page 63: ...0 G1 G2 FB400 VREG_CAM_ACT VREG_CAM_1 8V VREG_CAM_2 8V VREG_CAM_IO_2 8V CAM_PCLK_MF CAM_MCLKF CAM_DATA 0 F CAM_DATA 1 F CAM_DATA 2 F CAM_DATA 3 F CAM_DATA 4 F CAM_DATA 5 F CAM_DATA 6 F CAM_DATA 7 F CAM_RESET_NF I2C_SDAF I2C_SCLF M_CAM_PWDN CAM_HSYNCF CAM_VSYNCF Figure 3 10 5 2 VGA Camera to Board Connector Figure 3 10 5 1 3M Camera to Board Connector VGA_CAMERA CONNECTOR 7 8 9 10 11 12 13 14 15 16...

Page 64: ... signal and 8bits data from camera module The camera module is controlled by I2C port from MSM6280 Table 3 10 5 1 3 MEGA Camera Module pins description Not use FLASH in KB770 The VGA Camera module is connected to 20 pins connector S400 by FPCB It s interface is dedicated camera interface port in MSM6280 The VGA camera port supply 24 0 MHz master clock to camera module and receive 24 0 MHz pixel cl...

Page 65: ...g and service purposes 3 TECHNICAL BRIEF 3 10 6 Keypad Light There are 2 White LEDs in Main key backlight circuit which are driven by LED_CON line from PM6650 pin23 KPD_DRV_N Figure 3 10 6 Schematic of KEY back light circuit KEY side LD101 LD102 R103 120 120 R102 ICVN0505X150FR VA103 LED_CON VPWR ...

Page 66: ...ed by TMD This LCD Module has a 3 0 inch diagonally measured active display area with 240 RGB X400 resolution each pixel is divided into Red Green and Blue sub pixels and dots which are arranged in vertical stripes Features Display mode Normally Black Transmissive type HEAD mode 265K colors LCD Driver IC D54EPA7551 MAGNA CHIP Driving Method A Si TFT Active Matrix 16 bit CPU interface Parallel Figu...

Page 67: ...38 39 22 40 23 24 25 26 27 14 15 16 17 18 19 2 20 3 4 5 6 7 8 9 21 CN401 1 10 11 12 13 VA401 ICVN0505X150FR VA400 EVRC14S03Q030100R 5 G1 10 G2 1 INOUT_A1 INOUT_A2 2 3 INOUT_A3 INOUT_A4 4 INOUT_B1 9 INOUT_B2 8 INOUT_B3 7 6 INOUT_B4 FL400 INOUT_A3 4 INOUT_A4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3 INOUT_B4 6 FL401 EVRC14S03Q030100R G1 5 G2 10 INOUT_A1 1 2 INOUT_A2 3 VREG_LCD_2 8V 5 G1 10 G2 1 INOUT_A1 INOU...

Page 68: ... in GSM WCDMA frame format and delivered to RF Chipset The downlink path amplifies the signal from DBB chip MSM6280 and outputs it to receiver or speaker The receive path can be directed to either one of two earphone amplifiers or the auxiliary output The outputs earphone1 EAR1OP EAR1ON and auxiliary out LINE_OP LINE_ON are differential outputs Earphone2 HPH_L HPH_R is a single ended output stage ...

Page 69: ...T2_GPIO100 SDCC_DAT3_GPIO101 M26 MIC1P AE20 AF21 MIC2N MIC2P AF22 MICBIAS T15 AC22 LINE_L_IP AC18 LINE_ON LINE_OP AC17 AC20 LINE_R_IN LINE_R_IP AC19 AE3 MIC1N AF20 LINE_L_IN AC21 HPH_L W17 AA17 HPH_R AA19 HPH_VREF EAR1ON AE18 EAR1OP AF18 CCOMP AA20 AUXOUT AA18 AF19 AUXIN AE19 AUXIP C204 0 1u C200 56p 0 1u C211 0 1u MIC2P C210 MIC1N MIC1P AMP_P SDCC_DATA 1 SDCC_DATA 3 RCV RCV SDCC_DATA 2 AMP_N MICB...

Page 70: ...N2 5 NC1 7 NC2 2 NO1 NO2 10 1 VCC U300 NLAS5223BMNR2G 68nH L300 VA301 VA300 SPK300 SPK301 AMP_SPK AMP_SPK VPWR SPK_SW_ON RCV RCV DNI R504 R500 2 2K 470K R505 DNI R503 HH 1M1005 601JT FB500 tcc_16085h_9_r C500 10u 680K C502 33u 15 19 2 21 3 4 5 6 7 8 9 CN500 1 10 11 12 13 14 33u C503 100K R599 100ohm R502 100ohm R501 RMT_ADC_USB_D TV_OUT EAR_SENSE_N VREG_MSMP_2 7V 47n VBATT VBATT_SENSE PM_ON_SW_N R...

Page 71: ...3 VMID LIN2 C5 C6 LIN3_GPI7 B6 LIN4_RXN LON C2 LOP D1 B4 LOUT MCLK F5 A2 MICBIAS MODE E2 A4 OUT3 OUT4 C4 D4 RIN1 D6 RIN2 RIN3_GPI8 D5 E5 RIN4_RXP RON D2 A6 AVDD G5 BCLK F2 CSB_ADDR F3 DACDAT G4 DACLRC DBVDD G6 F6 DCVDD DGND E6 DNC F4 E4 GPIO1 GPIO3_BCLK2 G2 GPIO4_DACLRC2 G3 GPIO5_DACDAT2 G1 HPGND B3 A5 HPVDD D3 LIN1 U301 WM8959 AGND A3 R306 18K C315 2 2u R310 100K 1u C326 VREG_WM_2 7V 2 2K R308 R3...

Page 72: ...Phone Loud Mode Headset Voice Call Headset Speaker Phone Loud Mode Speaker phone Receiver Voice Call Description Receiver Mode Voice Call Device MODE Table 3 10 9 2 Audio main component list Audio Sound Main Component There are 6 main components in KB770 8 ohm Speaker 1813 8T 01PP Speaker Receiver 4 42 dB microphone SPM0410LR5H QB MIC MIC 5 Stereo Ear mic set HC MYD LG086 Ear phone 6 Dual Analog S...

Page 73: ...ain features Bar Type WCDMA 2100 GSM 900 1800 1900 7 2 Mbps HSDPA Support DVB T Support KB770 Color LCD Main 262K TFT 3 3 Mega Camera VGA Camera 18x13 Track type speaker Stereo Headset Speaker phone in GSM and WCDMA 72 Poly Sound MP3 AAC decoder and play MPEG4 encoder decoder and play save JPEG en decoder Supports Bluetooth USB External Memory Micro SD 1000 mAh Li Ion ...

Page 74: ... 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF 3 11 2 KB770 Main Components Main board Top Main board Bottom Sub board Bottom Sub board Top ...

Page 75: ... Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF Antenna SW FL100 DVB T tuner U705 TCXO X100 WCDMA PAM U102 GSM PAM U101 RTR6275 U100 Description Reference U100 U705 U101 FL100 U102 X100 RF Main board ...

Page 76: ...eserved Only for training and service purposes LGE Internal Use Only 3 TECHNICAL BRIEF Logic Audio Main board Analog switch U300 DVB T processor U601 Audio amp U301 PMIC U503 Memory U302 MSM6280 U200 Description Reference U200 U300 U302 U503 U301 U601 ...

Page 77: ...e Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF RF Logic Sub board Touch IC U104 Bluetooth IC U101 Charge Pump U103 Description Reference U103 U104 U101 ...

Page 78: ...X SAW filter EFCH2140TDE1 FL104 TX G850 900 Dual TX SAW Filter EFCH897MTDB1 FL101 TX GSM TX Dual PAM SKY77329 U101 GSM TRX WCDMA GSM Transceiver RTR6275 U100 Bluetooth TRX Bluetooth RF Transceiver RB04 U101 Bluetooth 19 2MHz VCTCXO TG 5010LH 19 2M 75A X100 Calibration etc Test Connector KMS 512 SW101 2G NAND 1G SDRAM Memory TYA000B800COGG U302 Band select Switch LMSP4LMA 573TEMP FL100 Power Supply...

Page 79: ...8 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 4 2 WCDMA RF Signal Path 1 Tx Signal Path Top to Bottom Top side Bottom side Bottom Bottom to TOP to TOP Top side Bottom side 2 Rx Signal Path ...

Page 80: ...ght reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING 4 3 GSM RF Signal Path 1 Tx Signal Path Top to Bottom Top side Bottom side Bottom to TOP Top side Bottom side 2 Rx Signal Path GSM Low Band GSM High Band ...

Page 81: ... The reference frequency 19 2MHz from X100 TCXO is used in UMTS TX part GSM part and BB part Fig 4 4 2 VCTCXO 19 2MHz Wave Fig 4 4 1 Schematic of the TCXO Block TCXO GND 3 OUT VCC 4 VCONT 1 19 2MHz X100 TG 5010LH_19_2M_75A 2 100ohm R121 C145 33p 0 1uF C144 C152 1000p 0 01u C149 100p C150 TCXO_BT VREG_TCXO_2 85V TRK_LO_ADJ TCXO_PM RTR6275_TCXO TP1 TP3 TP5 TP4 TP2 ...

Page 82: ...nc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING Fig 4 4 3 Test Point of the TCXO Block TP1 TP2 TP3 TP4 TP5 Top side Top side Top side Top side Bottom side Sub PCB Bottom side Sub PCB ...

Page 83: ...ly Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING Fig 4 4 4 Test Point of the TCXO Block Check C527 of PMIC U503 Check R209 of MSM U200 Check TP1 VCC of TCXO 5 T ...

Page 84: ...ottom side R100 0 C101 DNI 0 1uF C112 KMS 512 ANT G1 G2 RF SW101 C104 DNI L107 47nH R111 1K C102 56nH 33p C113 1K R108 C100 56p 1K R107 R110 1K UFL R SMT10 SW100 ANT G1 G2 NC 17 UMTS1 15 16 UMTS2 VC1 14 13 VC2 VC3 12 11 VC4 VDD 10 21 GND4 23 GND5 24 GND6 GND7 26 GND8 27 28 GND9 1 GSM1800RX1 GSM1800RX2 2 22 GSM1800_1900TX 3 GSM1900RX1 GSM1900RX2 4 GSM850RX1 7 8 GSM850RX2 GSM850_900TX 25 5 GSM900RX1...

Page 85: ... 86 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING Fig 4 5 3 Logic Table of the FEM Fig 4 5 4 Check Flow of the FEM ...

Page 86: ...Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING 4 6 Checking WCDMA Block 4 6 1 Checking Tx level Fig 4 6 1 1 Test point of the WCDMA TX Block Bottom side Bottom side TP1 TP2 TP3 TP4 ...

Page 87: ...73TEMP 19 TP1 DNI C155 51 R124 6 GND1 7 GND2 GND3 9 PGND 11 RFIN 2 8 RFOUT VBATT 1 10 VCC VEN 5 4 VMODE1 3 VMODE2 U102 AWT6279R 3 3p R122 3 ANT 4 PGND RX 1 2 TX ACMD 7602 FL102 100p C159 C148 1u C154 100p C158 100p C146 6 8nH C156 1 2p C143 10u 15p C153 2 7nH C151 U103 LDC151G9520Q 359 COU 3 2 IN OUT 1 TER 4 L120 0 L122 NA 100p C147 EFCH1950TDF1 FL103 2 G1 3 G2 5 G3 1 IN 4 O1 PA_R1 PA_ON VPWR HDET...

Page 88: ...TING Check Tx SAW Filter Check PAM block Check coupler U103 Check Duplexer FL102 Check FEM FL100 Run a FTM program Set RF mode to WCDMA_2100 Set Uplink Chan to 9739 Click Tx ON and WCDMA Set TX AGC to 400 Check TP4 Over 5 dBm Check TP2 Over 23dBm Check TP1 Over 22dBm Fig 4 6 1 3 Check Flow of the WCDMA TX Block Check TP3 Over 25dBm ...

Page 89: ... Detected value Check R101 2 TX_AGC_ADJ UMTS RTR6275 Tx Amp Gain Control 3 VPWR UMTS PAM Main Voltage 3V VPWR 4 2V 4 PA_ON Enable W2100 band C159 5 PA_R1 Control signals that step the active PA mode and bias z PAM control signal Fig 4 6 2 1 Test point of the WCDMA PAM Block WCDMA PAM W2100 WCDMA Coupler WCDMA Tx Saw Filter PA_ON W2100 Enable check C159 VPWR Bottom side Bottom side PA_R1 check C158...

Page 90: ... Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING 4 6 3 Checking Rx Level Fig 4 6 3 1 Test point of the WCDMA RX Block TP1 TP2 TP3 TP5 TP4 Bottom side Bottom side Top side Top side ...

Page 91: ...2 EGSM_INP GCELL_INN 30 GCELL_INP 31 22 GND1 GND2 23 25 GND3 1 GND4 2 GND5 GPCS_INN 37 36 GPCS_INP HB_RF_OUT1 RTR6275 U100 12K R102 WCDMA_MIX_IN_P VREG_RF_SMPS WLNA_OUT WCDMA_2100_TX_OUT DCS_PCS_TX GSM_TX RX_WCDMA_2100 DAC_REF TX_ON SSBDT_RTR TX_AGC_ADJ DNI C155 51 R124 6 GND1 7 GND2 GND3 9 PGND 11 8 RFOUT 10 VCC AWT6279R 3 3p R122 3 ANT 4 PGND RX 1 2 TX ACMD 7602 FL102 C160 18p 5 G2 1 IN 3 O1 4 O...

Page 92: ...and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING Check Vbias over 2V Check the RF S W Check FEM FL100 Check the Duplexer FL102 Check the RTR6275 U100 Check TP2 signal exist Check TP3 signal exist Check TP5 Signal exist Fig 4 6 3 3 Check Flow of the WCDMA RX Block ...

Page 93: ...t 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 4 7 Checking GSM Block 4 7 1 Checking Tx level Fig 4 7 1 1 Test point of the GSM TX Block Bottom side Bottom side TP1 TP2 TP3 TP4 TP5 ...

Page 94: ...28 33u 19 PGND4 20 21 PGND5 PGND6 22 PGND7 23 24 PGND8 25 PGND9 4 RSVD1 8 RSVD2 12 RSVD3 TX_EN 1 6 VAPC VBATT 5 GND5 7 GSM_IN 9 GSM_OUT 17 PGND1 PGND10 26 PGND11 27 PGND12 28 29 PGND13 30 PGND14 PGND15 31 32 PGND16 33 PGND17 PGND18 34 PGND19 35 18 PGND2 36 PGND20 PGND3 SKY77329 U101 BS 3 DCS_PCS_IN 2 16 DCS_PCS_OUT GND1 10 GND2 11 13 GND3 GND4 14 15 2 G1 3 G2 5 G3 1 IN 4 O1 EFCH897MTDB1 FL101 R114...

Page 95: ...g and service purposes 4 TROUBLE SHOOTING Check TP1 If G900 over 31dBm If DCS PCS over 28dBm G900 DCS PCS Tx is OK Check the other part Check TP2 TP3 If G900 over 29dBm If DCS PCS over 25dBm G900 DCS PCS Tx is OK Check PAM Block OK Refer to Chapter 4 7 2 Fig 4 7 1 3 Check Flow of the GSM TX Block ...

Page 96: ...ock Fig 4 7 2 1 Test point of the GSM PAM Block TP1 TP2 TP3 TP4 Bottom side 7 75dB 110 R120 C128 33u 19 PGND4 20 21 PGND5 PGND6 22 PGND7 23 24 PGND8 25 PGND9 4 RSVD1 8 RSVD2 12 RSVD3 TX_EN 1 6 VAPC VBATT 5 GND5 7 GSM_IN 9 GSM_OUT 17 PGND1 PGND10 26 PGND11 27 PGND12 28 29 PGND13 30 PGND14 PGND15 31 32 PGND16 33 PGND17 PGND18 34 PGND19 35 18 PGND2 36 PGND20 PGND3 SKY77329 U101 BS 3 DCS_PCS_IN 2 16 D...

Page 97: ...EGSM L111 47nH L104 3 3nH 22nH L109 L103 4 3nH 0 75p C119 2 7nH L105 100p C116 L102 NA L110 18nH L112 22nH NA L101 56p L100 4 3nH NC 17 UMTS1 15 16 UMTS2 VC1 14 13 VC2 VC3 12 11 VC4 VDD 10 21 GND4 23 GND5 24 GND6 GND7 26 GND8 27 28 GND9 1 GSM1800RX1 GSM1800RX2 2 22 GSM1800_1900TX 3 GSM1900RX1 GSM1900RX2 4 GSM850RX1 7 8 GSM850RX2 GSM850_900TX 25 5 GSM900RX1 GSM900RX2 6 FL100 LMSP4LMA 573TEMP ANT 19...

Page 98: ...08 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING Fig 4 7 3 3 Check Flow of the GSM RX Block TP1 TP2 TP3 Signals exist Top side RTR6275 Tx_QP Wave ...

Page 99: ...atic of the Bluetooth Block TP1 TP2 TP3 TP4 TP5 BLUETOOTH C101 1000p ANT100 FEED NC1 NC2 1000p C105 C100 100p 2 2u C108 0 1uF C109 C106 C104 1u 1u 0 L102 DNI C103 13 NC RX_BB_TX_BB 8 SBCK 10 11 SBDT SBST 6 5 SYNC_DET_TX_EN VDD_A 14 VDD_MSM 12 XTAL_IN 4 U101 RB04 ANT 16 9 CLK_REF 1 GND1 7 GND2 15 GND3 LDO1 2 LDO2 3 C102 1000p 4 5 VCC 100K R100 U100 TC7S04FU 3 GND 2 100p C110 100p C107 C124 DNI BT_S...

Page 100: ... 101 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING TP5 BT_CLK Wave TP3 TCXO_BT Wave ...

Page 101: ...ved Only for training and service purposes 4 TROUBLE SHOOTING Start TP1 TP2 Signals exits TP3 Is clock ok 19 2M TP4 Signals exits Change the Main board YES YES YES Change the U101 Sub PCB NO NO Change the X100 NO Change the main board Fig 4 8 3 Check Flow of the Bluetooth Block ...

Page 102: ...SME_1 8V C546 VREG_MSMP_2 7V C535 VREG_MSMA_2 6V C533 VREG_TCXO_2 85V C527 power up and system reset assert to MSM Æ Phone booting and PS_HOLD D502 assert to PMIC Battery voltage higher than 3 20V R520 go to low when key press NO YES YES YES YES NO NO NO Æ Æ Æ Æ Start Change the main board VREG_MSMC_1 25V VREG_MSME_1 8V VREG_MSMP_2 7V VREG_MSMA_2 6V VREG_TCXO_2 85V power up Is clock ok C150 19 2M ...

Page 103: ...CXO IN 19 2MHz C150 X500 32 768KHz MAIN Bottom near PM6650IC VREG_MSMP PS_HOLD D502 RUIM_IO MPP12 26 27 USB_SE0 19 USB_D_M 20 21 GP1_DRV_N MPP7 LCD_DRV_N 22 KPD_DRV_N 23 KPDPWR_N 24 VIB_DRV_N 25 VREG_5V 12 USB_OE_N 13 VSW_5V 14 USB_CTL_N 15 USB_VBUS 16 USB_DAT 17 USB_D_P 18 R520 100K 2 2u C536 R518 47K PM_ON_SW_N LED_CON USB_D USB_SE0 USB_D USB_DAT USB_VBUS USB_CTL_N USB_OE_N VPWR PM6650IC ...

Page 104: ... it charging properly After turning on U504 END NO Yes NO Yes NO Yes Charging Procedure Connect TA or USB Cable Control the charging current by PM6650 IC Charging current flows into the battery Check Point Connection of TA or USB Cable Charging current path Battery Troubleshooting Setup Connect TA and battery to the phone Troubleshooting Procedure Check the charger TA or USB Cable connector Check ...

Page 105: ... Current Flow CHARGING IC 5 1 EMITTER1 EMITTER2 2 6 GATE 9 P_COLLECTOR P_DRAIN 10 SOURCE 4 NUS3116MTR2G U504 BASE1 8 BASE2 7 3 COLLECTOR DRAIN 0 1 R519 CHG_CNT_N ICHARGE VBATT VPWR 5V_PWR USB_VBUS ICHARGEOUT VBATT BATT_FET_N USB_CTL_N TA 5 1V R519 Charging part MAIN Bottom U504 USB 5 0V Main Battery Pass Tr ON Battery FET ON CHARGING IC 4 2 4 25V ...

Page 106: ...ial sequence is USB connected to I O connector Æ USB_VBUS U504 go to 5V Æ USB_D go to 3 3V Æ USB_VP and USB_VN is triggered Æ USB work NO YES YES NO YES NO YES NO USB Troubleshooting Flow Start Change the main board Connect USB cable Go to Power on trouble shooting guide Check the USB cable Check the USB cable Cable is connected Power is ON U504 2pin is 5V USB_D is 3 3V ...

Page 107: ...IM Detect Troubleshooting USIM Initial sequence is VREG_USIM_2 85V go to 1 8V or 3 0V Æ USIM_CLK USIM_RST USIM_DATA triggered Æ USIM IF work Yes No YES NO No Yes Work well Change the Main board No Yes Change the sub board End Vreg_USIM is 1 8V or 3 0V USIM_P_CLK RST is run Re insert the SIM card Change the SIM card Work well Work well End Start ...

Page 108: ... 4 TROUBLE SHOOTING 1 2 3 4 5 6 Figure USIM part schemetics 1 VREG_USIM_2 85V 2 USIM_P_RST_N USIM_P_CLK 3 6 USIM_P_DATA 4 5 GND NC Figure USIM connector J100 L101 56nH GND2 8 6 I_O RST 2 VCC 1 5 VPP J100 3 CLK GND 4 7 GND1 33p C112 15K R102 33p C114 C111 33p 0 1u C113 USIM_P_DATA USIM_P_CLK USIM_P_RST_N VREG_USIM_2 85V ...

Page 109: ...ting Camera control signals are generated by MSM6280 Start VREG_CAM_1 8v C405 C404 Yes NO END Camera is OK Check the camera connector and reconnect the camera Change the Sub board Camera is OK Check the CAM_MCLK FL406 Pin4 Change the camera Yes Yes NO NO NO END Yes Change the Main board Change the Main board VREG_CAM__2 8V C402 C403 Change the Sub board Yes NO ...

Page 110: ... 111 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING FL406 C402 C404 MAIN Top near camera connector C405 C403 ...

Page 111: ...OTING 4 14 Keypad Backlight Troubleshooting Key Pad Back Light is on as below Key pressing Æ LED_CON go down low below 0 8v Æ MAIN Key Backlight LED On Start Change the Main board Check battery NO Yes Yes Key press Change the Main board Yes NO VPWR is above 3 2V LED_CON is low R102 R103 is connected ground Yes Change the KEY FPCB NO ...

Page 112: ... All right reserved Only for training and service purposes LGE Internal Use Only 4 TROUBLE SHOOTING R103 R102 LED_CON Figure Side key FPCB backlight LED part SUB Bottom LD101 LD102 R103 120 120 R102 ICVN0505X150FR VA103 LED_CON VPWR KEY_LED ...

Page 113: ...ing LCD control signals are generated by MSM6280 The signal path is MSM6280 Æ CN401 Æ LCD Module Start GO to power on trouble shooting Key LED is on Change the LCD module Yes NO Press END key Disconnect and reconnect The LCD connector CN401 END LCD display OK No Yes END LCD display OK No Yes Change the Main board END LCD display OK No Yes Change the LCD FPCB ...

Page 114: ... Path MSM6280 EAR1ON EAR1OP Æ R300 R301 Æ Analog Switch U300 Æ SPK300 SPK301 Æ Receiver Start Connect the phone to network Equipment and setup call Setup 1KHz tone out NO The sine wave appears at SPK_300 SPK_301 YES NO Can you hear the tone Change receiver YES END Change the Main board The sine wave appears at R300 R301 Check the analog switch YES NO ...

Page 115: ... 116 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING Analog Switch SPK300 SPK301 R300 R301 MAIN Top ...

Page 116: ... Use Only 4 TROUBLE SHOOTING 4 17 Headset path MSM6280 HPH_R HPH_L Æ R502 R501 Æ CN500 MMI Connector Start Connect the phone to network equipment and setup call Setup 1KHz tone out and insert headset Can you hear the tone Change the Headset YES NO END Sine wave appears at R502 R501 Change the Main board YES NO ...

Page 117: ...LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING CN500 R502 R501 MAIN Bottom near MMI connector MAIN Top near MMI connector ...

Page 118: ...301 Æ Analog Switch U300 Æ SPK300 SPK301 Æ Speaker Start Connect the phone to network equipment and setup call Setup 1KHz tone out Sine wave appears at R306 R307 Change the Main board NO AMP_EN R308 is 2 5V Change the Main board NO YES The sine wave appears at SPK300 SPK301 YES NO Change the speaker YES Change the Main board The sine wave appears at AMP_SPK Change the Main board Check the Analog S...

Page 119: ... 120 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING Analog Switch SPK300 SPK301 R306 R307 R308 MAIN Top ...

Page 120: ...vice purposes LGE Internal Use Only 4 TROUBLE SHOOTING 4 19 Main microphone MIC101 Æ VA607Æ MIC1P MSM6280 Start MIC_BIAS C616 is 1 8V Change main board NO Make a call Change the MIC NO YES Change the Main board Make sound to MIC Work well END YES NO Æ Æ YES Sine wave appears at VA607 ...

Page 121: ...ved Only for training and service purposes 4 TROUBLE SHOOTING VA607 C616 MAIN Top near sidekey FPCB connector ZD606 ESD9X5 0ST5G ZD604 03 C616 10u 39p C617 ZD605 VA609 VA607 EVLC5S0250 3 4 5 6 7 8 9 10 11 12 13 14 CN600 1 2 ICVN0505X150FR VA606 MIC1P LED_CON MICBIAS MIC1N VPWR ...

Page 122: ...20 Headset microphone Headset ÆCN500 MMI connector Æ D501 Æ MIC2P MSM6280 Start EAR_SENSE_N D501 is 0V Yes END Make a call Change the MAIN board MICBIAS is biased by 1 8V FB500 Change the Main board Yes YES NO NO NO Change the headset and retry YES Change MAIN board Sine wave appears at D501 Change the headset or Main board and retry NO Yes ...

Page 123: ...GE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING D501 FB500 MAIN Top near MMI connector CN801 MAIN Bottom near MMI connector ...

Page 124: ...l Use Only 4 TROUBLE SHOOTING 4 21 Vibrator Vibrator is operate when DC motor driver audio amp is enabled Start VREG_VIB_3 0V C701 is above 2 5V Operate the Vibrator check battery NO YES Change vibrator MOTOR_EN R703 is above 1 8V Change the PMIC Main board NO YES C801 R703 MAIN Bottom near Vibrator connector ...

Page 125: ...Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 4 22 Checking DVB T H Block The DVB T H function is for KB770 DVB T H PCB Block DVB T H Block DIB9080 TCC7920S BOTTOM TOP DVB T H ANTENNA FEEDING CONTACT ...

Page 126: ..._2 B4 J8 PWRSDR_3 K11 PWRUSB REXT J11 J7 RSTN RTCK D13 N5 SCLK0 SCLK1 N9 LPD_9 B1 LRCK E7 LWEN E3 LXA0 F7 A6 MCLK NTRST E12 D9 PWR12_1 D10 PWR12_2 E10 PWR12_3 PWR12_4 F10 PWR12_5 H7 PWR12_6 H9 C13 PWRDAC PWREHI J4 G9 PWRGP0 G8 PWRGP1 A3 LPD_15 LPD_16 A1 A2 LPD_17 G1 LPD_18 G6 LPD_19 E5 LPD_2 LPD_20 G7 F2 LPD_21 LPD_22 F3 F4 LPD_23 D2 LPD_3 LPD_4 D3 LPD_5 D4 LPD_6 C2 LPD_7 C3 LPD_8 B2 M3 HPXD5 M2 H...

Page 127: ...OTING KB770 DVB T H CHECKING FLOW Go into the Broadcasting Mode Check the Antenna contact point Check DVB H Antenna or replace Antenna YES 1 08V TP1 1 32V 2 34V TP2 2 86V 1 62V TP3 1 98V 0 9V TP4 1 1V NO Check the LDO DC DC replace not working LDO DC DC TP6 30MHz TP5 12MHz Replace X700 Replace X600 Replace U705 NO YES YES YES NO NO ...

Page 128: ...3 MIC23031 AYMT U602 EN 4 FB 5 G_SLUG 7 PGND 6 3 SNS 2 SW VIN 1 TCC_PWR_EN 1 8V_DVB_RF VPWR SW 2 1 VIN R708 0 U700 MIC23031 AYMT 4 EN FB 5 7 G_SLUG PGND 6 SNS 3 R1131D181D GND 5 NC1 2 4 NC2 VDD 1 3 VOUT 6 _CE_OR_CE U703 33nH L701 L700 4 7uH VPWR 1 8V_DVB_RF 1 8V_DVB_PLL C707 1u 2 2u C708 R701 390K 2 2u C730 R712 DNI 4 7u C702 R700 200K DIB_LDO_EN DIB_DCDC_EN 0 9857V 1 0V_DVB_CORE L702 4 7uH 4 7u C...

Page 129: ...21G 12MHz 8PF X600 1 TCC_2 6V_SDR 12p C614 1M R719 R720 470 VDD_BANK_1 A12 VSS1 F11 F7 VSS2 VSS3 F8 VSS4 G7 VSS5 G8 H7 VSS6 VSS7 H8 VSS8 L7 VSS9 M12 L10 RESETN RFU C11 D11 HOST_BUS14 C13 HOST_BUS2 K13 K11 HOST_BUS3 J13 HOST_BUS4 J11 HOST_BUS5 H13 HOST_BUS6 HOST_BUS8 G13 HOST_BUS9 G11 HOST_VUS7 H11 INT_SELECT0 L9 L8 INT_SELECT1 GPIO1 B12 F13 GPIO2 L13 HOST_BUS0 HOST_BUS1 L11 HOST_BUS10 E13 E11 HOST...

Page 130: ...driver is installed Additionally LGMDP allows multi downloading up to 9 handsets at the same time 5 2 DOWNLOADING PROCEDURE Connect the phone to your desktop PC using the USB cable and run the LGMDP application Before getting started set up LGMDP preferences from the Preferences of the ﬁle menu the way you want Click on the File menu and select Preferences Play a success sound It will be played a ...

Page 131: ...be pop up Check if state shows Enable for the port to be connected for downloading images Then click on the Connect button The port number COM7 shall be different from that of the port number in the snapshot The status Ready is displayed when the application is ready for downloading While the images are transmitted from PC to the handset a progressive bar Red box indicating the degree of transmiss...

Page 132: ...ckup the NV data and restore the backed up NV data automatically 4 Reset database Contents User related data including the setting data on the EFS is reset in the handset The user contents in the handset will be erased If you want to reset all the user data back to the way they were before you started downloading new images check the option Erase_EFS The calibration data user contents media and mo...

Page 133: ...the path where the image ﬁles are located Select the path on the Image Folder by clicking on the Browse then the LGMDP will automatically load images ac cordingly Also you can select images by manually For instance select the path of AMSS Modem Image ﬁle by clicking on the Browse button The selected AMSS image will be downloaded to the handset from the path directory in the PC Make sure that you h...

Page 134: ...o be downloaded on the handset To enable this simply check the box or select the NV ﬁle from the LGMDP installation directory by clicking on the Browse button Click on the START button to start downloading A summary of the selected images and option information window will be displayed Click on the No button if this is not the setting you are downloading for Otherwise click on the Yes button to co...

Page 135: ... to allow the testing of the integrity of the DZ image by checking a hash code of every included ﬁle DZ does not allowing extracting or creating zip archive with other public opened archive tool such as WinZip or Alzip To download DZ image simply click on the DZ button Select dz image path where dz image ﬁle is located by clicking on the Browse button Click on the Start Button to start downloading...

Page 136: ... W upgrade This message box informs that a new ﬁle for NV backup will be created in the displayed ﬁle name in the LGMDP installation directory Backing up NV data and backed up NV data will be stored in the LGMDP installation directory Erasing the existing directories and ﬁles before the Mod ule image is downloaded 5 2 3 Downloading ...

Page 137: ...ved Only for training and service purposes 5 Download S W upgrade Downloading the AMSS modem image Rebooting the handset and re establishing the connection Restoring NV data which backed up in the Backing up process User can also restore NV data using NV Default image selection ...

Page 138: ...nly for training and service purposes LGE Internal Use Only 5 Download S W upgrade Rebooting the handset and re establishing the connection Erasing the existing directories and ﬁles before downloading the selected Media image Downloading Media image in progress ...

Page 139: ... Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 5 Download S W upgrade Downloading Module image in progress Rebooting handset Downloading process has completed successfully ...

Page 140: ...poses LGE Internal Use Only 5 Download S W upgrade 5 2 4 Tools Device Manager allows to monitor current hardware that is installed on your PC Device Manager is designed to moni tor USB connectivity and check where the COM has been installed Select Device Manager from the Tools of the ﬁle menu ...

Page 141: ...rgency mode Simultaneously press 2 5 and PWR red keys and then try to download all the images up to AMSS In the emergency mode you can not download media or module image The phone supports a special mode called emergency mode In this mode minimum units for downloading is running so that users can download the images again in case of emergency situation AMSS modem Media and Module im ages can not b...

Page 142: ...se Image ﬁle after clicking on the Browse button Make sure that you have chosen the right image ﬁle After choosing valid images then click on the Start button to start downloading selected images The selected image will be downloaded to the handset from the path directory in the PC After downloading images successfully it will boot to normal mode ...

Page 143: ...purposes 5 Download S W upgrade 5 3 2 NV Restore Error Snapshot showing the NV Restore error Next slide shows the remedial procedure to adopt Connect the handset and Press the Connect button in the Select Port window Enable state in the window indicates that the Phone has been detected and is ready to download ...

Page 144: ... was done Choose the desired NV ﬁle to be downloaded on the handset and click on Start 5 4 CAUTION 1 Multi downloading using the USB hub is not recommendable 2 If you see the message cal mode after completing download you must do NV restore and image media and module download 3 The NV data saved at LGMDP folder as following format 4 Recommended that the Module and Media Image have to be downloaded...

Page 145: ...x USIM USB TA NAND 2G SDRAM 1G Speaker LCD 3 WQVGA Stereo Headset Audio amp WCDMA PAM Demodulator Multimedia Processor switch Touch Driver IC Touch Panel T Flash EGSM DCS PCS Tx EGSM DCS PCS Rx RX_SAW VGA camera DVB T 146 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 6 BLOCK DIAGRAM 6 BLOCK DIAGRAM Block Diagram_System ...

Page 146: ... 147 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 6 BLOCK DIAGRAM Block Diagram_MSM6280 ...

Page 147: ... 148 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 6 BLOCK DIAGRAM Block Diagram_RF ...

Page 148: ... 149 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 6 BLOCK DIAGRAM Block Diagram_DVB T ...

Page 149: ...es 6 BLOCK DIAGRAM PMIC MSM6280 SDRAM 1Gb 128MB NAND 2Gb 256MB DATA 31 0 ADDRESS 15 0 WE CS CAS RAS CLK_EN CLK DQM 3 0 NAND_CS NAND_RE NAND_WE NAND_CLE NAND_WP NAND_ALE NAND_READY DATA 7 0 USIM SIM_RESET SIM_IO SIM_CLK EBI1 EBI2 TFLASH TFLASH_CMD TFLASH_DATA 3 0 TFLASH_CLK TFLASH_DECT_N Block Diagram_Memory Interface ...

Page 150: ...NC CAM_PCLK CAM_MCLK I2C_SDA I2C_SCL CAM_PWDN CAM_RESET_N VREG_CAM_IO_2 8V VREG_CAM_2 8V EBI2_DATA 15 0 LCD_ADS LCD_CS_N EBI2_WE_N LCD_RESET_N VREG_LCD_2 8V VREG_CAM_1 8V VREG_CAM_ACT WLED_PWR VGA Camera VREG_CAM_IO_2 8V VREG_CAM_1 8V CAM_DATA 7 0 CAM_HSYNC CAM_VSYNC CAM_PCLK CAM_MCLK I2C_SDA I2C_SCL VGA_CAM_PWDN VGA_CAM_RESET_N LCD_BP_EN TCC7920 Digital Processor Block Diagram_ Camera LCD Interfa...

Page 151: ...purposes 6 BLOCK DIAGRAM USB MSM6280 PM6650 RECEPTACLE I O Conn UART3 Touch UART1 VBUS D D SIM UART2 RUIM USB TRANSCEIVER I O RST CLK USB_DAT USB_SE0 USB_OE_N USB UART JTAG RX TX USIM TRANSCEIVER TSC2007 Touch driver JTAG JTAG Interface TOUCH_PENIRQ TOUCH_SDA TOUCH_SCL Block Diagram_USB UART SIM JTAG interfaces ...

Page 152: ...ND Bluetooth TCXO USIM T Flash VREG_TCXO 2 85V 50mA VREG_TFLASH 3 0V 150mA PAM GSM Dual LDO Charge Pump LCD Backlight TPA2005 MSM 6280 RTR6275 FEM VREG_MSMP 2 7V 300mA VREG_MSMC 1 25V 500mA VREG_MSMA 2 6V 300mA VREG_MSME 1 8V 500mA VREG_SYNTH 2 6V 50mA VREG_RF_SMPS 2 85V 150mA Audio Codec Audio Codec LDO Select RCV SPK USB REMOCON_SEL 1 8V_DVB_RF 1 2V_DVB_BB_CORE KEY_LED PAM W2100 DVB T RF Tuner 1...

Page 153: ...Recep TRST_N TCK TMS TDI TDO RTCK PM_INT_N PS_HOLD TCXO_EN ON_SW_N MSM_RESIN_N JTAG LED Motor Driver USIM Level Trans SBI USB Trans ADC AMUX_OUT VPWR Motor VBATT_SENSE REMOTE_DET PCB_REV_CHK HKADC0 HKADC1 HKADC3 HKADC4 HKADC5 UART2 UART1 UART TX RX JTAG CON UART USB USB_D D VBUS KEY_ROW 0 3 KEY_COL 0 1 LCD_BL_CTRL EAR_SENSE_N EAR JACK KEY TV_OUT_DET TTY_ADC_DET SDCC_CMD SDCC_DATA 3 0 TFLASH SDCC_C...

Page 154: ...nternal Use Only 6 BLOCK DIAGRAM MSM6280 AMP WM8959 SPK_AMP_EN AMP_N AMP_P Loud SPEAKER 18x13 3 6T 8ohm 0 8W EAR JACK 4 Pole 12 pin MMI MIC 6 15x3 16 1 25T 42dB 3dB AMP_SPK AMP_SPK HPL_L HPL_R MIC2P MIC1P MIC1N MICBIAS RCV RCV EAR_SENSE_N NLAS5223B Analog Switch SPK SPK HPL_LC HPL_RC Block Diagram_Audio ...

Page 155: ... 156 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 156: ...82 15p C102 56nH C153 L110 18nH L112 22nH NA L114 C133 100p 33p 82 R116 C113 2 7nH C151 1K R108 R112 2 2K U103 LDC151G9520Q 359 COU 3 2 IN OUT 1 TER 4 L113 47nH NA L101 0 1uF C100 C144 22p 56p C136 2 2nH L117 L123 1nH C124 C152 0 1u 1000p 0 01u C149 L119 1nH 1K R107 C135 22p L124 1nH L120 0 12p C115 L122 NA 2 2u R110 C132 1K 10 R113 C137100p C127 68p L100 4 3nH UFL R SMT10 SW100 ANT G1 G2 100p C16...

Page 157: ...K_GRFC14_GPIO80 K19 N21 AUX_PCM_DIN_GRFC13_GPIO14 AUX_PCM_DOUT_GRFC12_GPIO103 G4 AUX_PCM_SYNC_GRFC11_GPIO102 J8 AE21 BOOT_MODE BOOT_MODE2 AE22 AD1 BOOT_MODE3 G23 BT_CLK_GPIO25 BT_DATA_GPIO20 R19 E26 BT_SBCK_GPIO23 BT_SBDT_GPIO22 E25 F23 BT_SBST_GPIO24 BT_TX_RX_N_GPIO21 H21 CAMCLK_PO_GP_MN_GPIO13 J21 CAMIF_DATA0_GPIO83 J25 A2_15 W13 A2_16 AE14 AC14 A2_17 A2_18 T13 AA14 A2_19 AF9 A2_2 AF13 A2_20_GPI...

Page 158: ...NC37 F9 NC38 F10 NC39 A4 NC4 F11 NC40 F12 NC41 NC13 B11 B12 NC14 NC15 B13 B14 NC16 NC17 C1 C2 NC18 NC19 C5 A2 NC2 NC20 C13 C14 NC21 D1 NC22 D14 NC23 E1 NC24 E7 NC25 E8 NC26 E9 NC27 NC110 W3 W4 NC111 NC112 W11 W12 NC113 NC114 W13 W14 NC115 NC116 Y1 Y2 NC117 NC118 Y3 Y4 NC119 B4 NC12 NC120 Y11 Y12 NC121 NC122 Y13 Y14 NC123 NC124 D7 H10 IO7 G12 IO8 M12 IO9 NC1 A1 B2 NC10 T13 NC100 NC101 U1 NC102 U3 U...

Page 159: ...10 INOUT_A1 1 INOUT_A2 2 VREG_CAM_ACT VREG_CAM_1 8V INOUT_A3 4 INOUT_A4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3 INOUT_B4 6 VREG_CAM_IO_2 8V FL401 EVRC14S03Q030100R G1 5 G2 10 INOUT_A1 1 2 INOUT_A2 3 VREG_LCD_2 8V VREG_CAM_1 8V VREG_CAM_2 8V FL403 G1 5 G2 10 INOUT_A1 1 INOUT_A2 2 3 INOUT_A3 4 INOUT_A4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3 INOUT_B4 6 5 G1 10 G2 1 INOUT_A1 INOUT_A2 2 3 INOUT_A3 INOUT_A4 4 9 INOU...

Page 160: ...u C545 5 1 EMITTER1 EMITTER2 2 6 GATE 9 P_COLLECTOR P_DRAIN 10 SOURCE 4 EVLC5S0250 VA502 NUS3116MTR2G U504 BASE1 8 BASE2 7 3 COLLECTOR DRAIN 47p C517 56p C522 32 768KHz 1 2 C544 1000p X500 1u C525 0 R506 C524 1u 470K R505 DNI R503 HH 1M1005 601JT FB500 51K L500 4 7uH smd_2520h1_6_r R517 tcc_16085h_9_r C500 10u R507 0 1u C519 C507 680K 0 1u 10u C543 2 2u C531 NC 2 P_GND 7 RCLAMP0504P TCT 5 5V_NC 1 ...

Page 161: ...00K R615 ZD604 C623 ZD603 270p 0 1u C612 0 R623 VA612 EVLC5S0250 R609 0 VPWR 3 0V_AUDIO C602 0 1u TP603 TCC_2 7V_EHI_LCD R610 100K 0 1u C609 R621 200K C624 C619 1u 4 7u TCC_1 2V_CORE TP600 VA610 EVLC5S0250 EVLC5S0250 VA617 100ohm R603 2 2u TCC_2 6V_MISC TV_OUT_3 0V C625 R605 100ohm 100K R613 TCC_1 2V_CORE C616 10u 0 R622 C604 0 1u TP602 TP605 EVLC5S0250 VA615 R606 100ohm VA616 EVLC5S0250 0 1u C607...

Page 162: ...N GNDRF3 GNDRF4 F6 G3 GNDRF5 G6 GNDRF6 H3 GNDRF7 GNDRF8 H6 GNDRF9 J3 GPIO1 B12 F13 GPIO2 GPIO3 N12 M13 GPIO4 L13 HOST_BUS0 HOST_BUS1 L11 HOST_BUS10 E13 E11 HOST_BUS11 D13 HOST_BUS12 HOST_BUS13 BIASRES B2 CLK_CFG A6 CRYSTAL_N E1 D1 CRYSTAL_P DGND1 C3 C4 DGND2 DGND3 C5 C6 DGND4 GNDRF1 D3 GNDRF10 K3 L4 GNDRF11 GNDRF12 L5 L6 GNDRF13 E3 GNDRF2 F3 10nH U705 DIB9080H 33nH L705 L701 1 2 L700 4 7uH CN700 1...

Page 163: ...12 XTAL_IN 4 U101 RB04 ANT 16 9 CLK_REF 1 GND1 7 GND2 15 GND3 LDO1 2 LDO2 3 46 47 48 49 50 28 29 30 31 32 33 34 7 8 9 26 35 36 37 38 39 40 41 42 43 44 27 45 15 16 17 18 19 2 20 21 22 23 24 25 3 4 5 6 CN101 1 10 11 12 13 14 C102 1000p 4 5 VCC 100K R100 U100 TC7S04FU 3 GND 2 TP103 R106 100K C111 33p 0 1u C113 R104 7 5K TP100 100p 0 01u C121 C110 100p C107 C124 DNI TP101 1u C119 1u C120 C115 BT_TX_RX...

Page 164: ... Side Volume Up Down OK Send Clear Zoom In shutter 7 6 14 PIN CONNECTOR B 5 B LD101 LD102 TP102 TP101 SW101 END DOWN R103 120 UP 120 R102 CLR LOC MIC SPM0410LR5H QB 2 G1 G2 3 G3 4 6 G4 OUT 1 5 PWR ICVN0505X150FR VA103 7 8 9 10 11 12 13 14 CN101 1 2 3 4 5 6 PM_ON_SW_N LED_CON KEY_COL 0 KEY_COL 1 PM_ON_SW_N KEY_ROW 0 KEY_ROW 1 KEY_ROW 2 KEY_ROW 3 KEY_ROW 2 KEY_ROW 0 KEY_ROW 3 KEY_COL 0 KEY_COL 1 KEY...

Page 165: ... 166 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 166: ... 167 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 8 BGA PIN MAP 8 BGA PIN MAP NC MSM6280 ...

Page 167: ... 168 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 8 BGA PIN MAP NC Memory TYA000B800COGG ...

Page 168: ... 169 Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 8 BGA PIN MAP DVB T DIB9080H NC ...

Page 169: ... 170 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 8 BGA PIN MAP DVB T TCC7920S NC ...

Page 170: ...y for training and service purposes U100 RTR6275 Can t make a call No TX power U705 DIB9080H Can t operate DVB T U200 MSM6280 Abnormal operation No power on U302 Memory Abnormal operation No power on U402 Dual LDO Can t operate Camera U501 OVP No charging U503 PM6650 Abnormal operation No power on ...

Page 171: ... a picture No use camera CN600 Side key connector No power on Abnormal side key operation U301 WM8959 Audio CODEC Can t operate SPK CN401 LCD connector No LCD display CN501 Battery connector No power on No charging SW100 ANT Switch Can t make a call No service U101 GSM PAM Can t make a call Low TX power FL100 FEM Can t make a call Low Tx power No service U101 GSM PAM Can t make a call Low TX power...

Page 172: ...03 LCD backlight charge pump Can t see LCD display LCD backlight off CN102 Touch panel connector No touch sensing U104 Touch driver IC Abnormal touch sensing U103 LCD backlight charge pump Can t see LCD display LCD backlight off J100 USIM connector No use phone set Display Inset SmartChip ANT100 No use BT service Abnormal Tx RX power ...

Page 173: ...PCB LAYOUT 174 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes CN101 B to B connector No use BT touch Insert SmartChip Abnormal operation ...

Page 174: ... 175 9 PCB LAYOUT LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 175: ...9 PCB LAYOUT 176 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 176: ... Use Only 10 CALIBRATION 10 CALIBRATION 10 1 USAGE OF HOT KIMCHI 10 1 1 Calibration Model Name Calibration Only Procedure Click SETTING in menu and logic operation in sub menu Choose 1 in LOGIC MODE means calibration alone Select the model name which you want in list box Click Start button to calibrate a phone ...

Page 177: ...nd logic operation in sub menu You can select how to control AT comm Testset and Power supply in DLL Operating Mode You can set UART Port and logic mode mode 1 Calibration alone You can set Result File s name type If you choose TIME the saved ﬁles name is saved in a run time You can run the multi mode S B1 S B2 You can use S B1 for only one port You can set the path of HOTKIMCHI program ...

Page 178: ...Internal Use Only 10 CALIBRATION 10 1 3 Log of Calibration and Test Contents On Running Log window is created in center area It displays logs of command and measurements of Calibration or Autotest The result files are saved in the directory janghee debug Cal janghee debug Auto or janghee debug CalAuto ...

Page 179: ... 180 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 180: ...Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes 1 3 4 5 6 9 10 11 12 13 16 17 18 19 20 55 54 53 52 51 50 48 47 45 44 43 42 38 56 49 46 41 40 39 37 36 35 24 28 32 33 31 34 30 29 27 26 25 23 22 21 2 7 8 14 15 ...

Page 181: ...ASS Y EXPLODED VIEW 182 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes A B C J L M S T D E F G H I K N O P Q R ...

Page 182: ...Color 3 MPAE00 PACKING BLISTER MPAE0007803 COMPLEX empty Red 2 APEY00 PHONE APEY0668401 BLACK 3 ACGV00 COVER ASSY BAR ACGV0001901 Black 4 ACGK00 COVER ASSY FRONT ACGK0119701 Black K 5 MCJK00 COVER FRONT MCJK0092701 MOLD PC LEXAN EXL4419 Black 25 6 MICZ00 INSERT MICZ0025701 CASTING Zn Alloy Without Color 5 MGAZ00 GASKET MGAZ0059901 COMPLEX empty Without Color 28 5 MLAB00 LABEL A S MLAB0001102 C2000...

Page 183: ...olor 42 5 MPBZ01 PAD MPBZ0196201 COMPLEX empty Without Color 44 5 MTAA00 TAPE DECO MTAA0166801 COMPLEX empty Without Color 50 5 MTAD00 TAPE WINDOW MTAD0092401 COMPLEX empty Without Color 52 5 MWAE00 WINDOW CAMERA MWAE0039201 CUTTING PMMA MR 200 Black 53 5 SNGR00 ANTENNA GSM RETRACTA BLE SNGR0000901 4 5 4 5 7 dBd 7 dBd Black DVB T 470 862MHZ 38 4 ACGZ00 COVER ASSY ACGZ0016301 Black D 5 MCJZ00 COVER...

Page 184: ...OR MIDZ0138601 COMPLEX empty Green 33 4 MLAZ00 LABEL MLAZ0038303 PRINTING empty White 4 MTAB00 TAPE PROTECTION MTAB0263101 COMPLEX empty Without Color A 1 4 MWAC00 WINDOW LCD MWAC0090503 COMPLEX empty Black B 3 7 ADCA00 DOME ASSY METAL ADCA0069001 CU920 METAL DOME ASSY Black 15 6 MTAC00 TAPE SHIELD MTAC0077101 COMPLEX empty Without Color 6 MTAC01 TAPE SHIELD MTAC0078701 COMPLEX empty Without Color...

Page 185: ...OP SACD0062501 7 LD101 DIODE LED CHIP EDLH0013403 WHITE ETC R TP 3 8 1 2 0 6T empty 2 9 3 2V 20mA 1200 1400mcd 126mW empty empty 2P 7 LD102 DIODE LED CHIP EDLH0013403 WHITE ETC R TP 3 8 1 2 0 6T empty 2 9 3 2V 20mA 1200 1400mcd 126mW empty empty 2P 7 SW101 SWITCH TACT ESCY0004201 12 V 0 02 A HORIZONTAL 0 2 G 6 SPCY PCB FLEXIBLE SPCY0163201 POLYI 0 4 mm MULTI 4 4 SACY01 PCB ASSY FLEXIBLE SACY008470...

Page 186: ...0 pF 50V D NP0 TC 1005 R TP 7 C127 CAP CHIP MAKER ECZH0000844 68 pF 50V J NP0 TC 1005 R TP 7 C128 CAP TANTAL CHIP ECTH0002002 33 uF 10V M L_ESR 2012 R TP empty empty 55TO 125C 2 2X1 1X1 1MM empty empty empty 7 C130 CAP CHIP MAKER ECZH0000830 33 pF 50V J NP0 TC 1005 R TP 7 C133 CAP CHIP MAKER ECZH0000813 100 pF 50V J NP0 TC 1005 R TP 7 C143 CAP TANTAL CHIP ECTH0001902 10 uF 10V M L_ESR 1608 R TP 7 ...

Page 187: ... R TP 7 C325 CAP CERAMIC CHIP ECCH0000199 12 nF 16V K X7R HD 1005 R TP 7 C326 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 7 C327 CAP CERAMIC CHIP ECCH0000199 12 nF 16V K X7R HD 1005 R TP 7 C328 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 7 C329 CAP CERAMIC CHIP ECCH0000198 2 2 uF 6 3V M X5R TC 1005 R TP 7 C400 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 7 C...

Page 188: ...5 R TP 7 C612 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 7 C613 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 7 C614 CAP CHIP MAKER ECZH0000816 12 pF 50V J NP0 TC 1005 R TP 7 C615 CAP CHIP MAKER ECZH0000816 12 pF 50V J NP0 TC 1005 R TP 7 C616 CAP TANTAL CHIP ECTH0005601 10 uF 10V M L_ESR 1608 R TP empty empty empty empty empty empty empty 7 C617 CAP CERAMIC CHIP ECCH000012...

Page 189: ... CONNECTOR ETC ENZY0018801 PIN mm ETC RCS 1 35 7 D500 DIODE TVS EDTY0008602 SOD 323 13 3 V 400 W R TP PB FREE 7 FB400 FILTER BEAD CHIP SFBH0000903 600 ohm 1005 7 FL100 FILTER SEPERATOR SFAY0009201 dB dB dB dB ETC 7 FL101 FILTER SAW SFSY0030201 897 5 MHz 1 4 1 1 0 6 SMD Pb free_SAW_GSM900_Tx 7 FL102 DUPLEXER IMT SDMY0001301 1950 MHz 2140 MHz 1 6 dB 2 0 dB 53 dB 44 dB 3 0 2 5 1 2 SMD FBAR WCDMA dupl...

Page 190: ...00 INDUCTOR CHIP ELCH0005019 68 nH J 1005 R TP 7 L301 INDUCTOR CHIP ELCH0005019 68 nH J 1005 R TP 7 L600 INDUCTOR SMD POWER ELCP0008004 4 7 uH M 1 R TP 0 3NH NON SHIELD 2 5X2X1MM 11MM R TP 7 L601 INDUCTOR SMD POWER ELCP0008003 3 3 uH M 2 5 2 0 1 0 R TP Chip power 7 L700 INDUCTOR SMD POWER ELCP0008004 4 7 uH M 1 R TP 0 3NH NON SHIELD 2 5X2X1MM 11MM R TP 7 L702 INDUCTOR SMD POWER ELCP0008004 4 7 uH ...

Page 191: ...1 16W F 1005 R TP 7 R509 RES CHIP MAKER ERHZ0000204 100 Kohm 1 16W F 1005 R TP 7 R510 RES CHIP MAKER ERHZ0000537 680000 ohm 1 16W F 1005 R TP 7 R511 RES CHIP ERHY0000254 4 7K ohm 1 16W J 1005 R TP 7 R519 RES CHIP MAKER ERHZ0003901 0 1 ohm 1 4W F 2012 R TP 0 1 1 1 4W 2012 R TP 7 R599 RES CHIP MAKER ERHZ0000204 100 Kohm 1 16W F 1005 R TP 7 R600 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 7 R601 R...

Page 192: ...RT SAFP0000501 7 R628 RES CHIP MAKER ERHZ0000412 1200 ohm 1 16W J 1005 R TP 7 R629 PCB ASSY MAIN PAD SHORT SAFP0000501 7 R630 RES CHIP MAKER ERHZ0002401 12 Kohm 1 16W J 1005 R TP 7 R632 RES CHIP ERHY0000179 39 ohm 1 16W F 1005 R TP 7 R634 RES CHIP MAKER ERHZ0000405 10 Kohm 1 16W J 1005 R TP 7 R700 RES CHIP ERHY0000161 200K ohm 1 16W F 1005 R TP 7 R701 RES CHIP ERHY0000166 390 Kohm 1 16W F 1005 R T...

Page 193: ...udio DAC with Class AB D dual speaker driver IC Audio Codec 7 U303 IC EUSY0232816 SON1612 6 6 PIN R TP 3 0V 150mA LDO 7 U504 IC EUSY0332901 WDFN 8 PIN R TP 12V 6 3A Single P MOSFET DUAL Transistor 7 U600 IC EUSY0186502 Micropak 6 PIN R TP Single SPDT Analog Switch Pb Free 7 U601 IC EUSY0352701 BGA 169 PIN R TP DVB H IC Digital Signal Processors 7 U602 IC EUSY0154417 DFN 6 R TP 4MHz 400mA ADJ Buck ...

Page 194: ...ODE TVS EDTY0009101 SOD 923 5 V 150 mW R TP 1 0 0 6 0 4 7 ZD601 DIODE TVS EDTY0009101 SOD 923 5 V 150 mW R TP 1 0 0 6 0 4 7 ZD602 DIODE TVS EDTY0009101 SOD 923 5 V 150 mW R TP 1 0 0 6 0 4 7 ZD603 DIODE TVS EDTY0009101 SOD 923 5 V 150 mW R TP 1 0 0 6 0 4 7 ZD604 DIODE TVS EDTY0009101 SOD 923 5 V 150 mW R TP 1 0 0 6 0 4 7 ZD605 DIODE TVS EDTY0009101 SOD 923 5 V 150 mW R TP 1 0 0 6 0 4 7 ZD606 DIODE ...

Page 195: ...15 22 pF 50V J NP0 TC 1005 R TP 7 C136 CAP CERAMIC CHIP ECCH0000115 22 pF 50V J NP0 TC 1005 R TP 7 C137 CAP CHIP MAKER ECZH0000813 100 pF 50V J NP0 TC 1005 R TP 7 C138 CAP CERAMIC CHIP ECCH0000115 22 pF 50V J NP0 TC 1005 R TP 7 C139 CAP CHIP MAKER ECZH0000813 100 pF 50V J NP0 TC 1005 R TP 7 C141 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K X7R HD 1005 R TP 7 C142 CAP CERAMIC CHIP ECCH0000115 22 pF 50V...

Page 196: ... ECZH0004402 100000 pF 16V Z X7R TC 1005 R TP empty empty empty empty empty empty 7 C219 CAP CHIP MAKER ECZH0004402 100000 pF 16V Z X7R TC 1005 R TP empty empty empty empty empty empty 7 C220 CAP CHIP MAKER ECZH0004402 100000 pF 16V Z X7R TC 1005 R TP empty empty empty empty empty empty 7 C221 CAP CERAMIC CHIP ECCH0000143 1 nF 50V K X7R HD 1005 R TP 7 C222 CAP CERAMIC CHIP ECCH0000143 1 nF 50V K X...

Page 197: ...CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 7 C304 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 7 C305 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 7 C308 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 7 C309 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 7 C310 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 7 C311 CAP CHIP MAKER E...

Page 198: ...P CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 7 C512 CAP CERAMIC CHIP ECCH0006201 4 7 uF 6 3V K X5R TC 1608 R TP 7 C513 CAP CERAMIC CHIP ECCH0006201 4 7 uF 6 3V K X5R TC 1608 R TP 7 C514 CAP CERAMIC CHIP ECCH0006201 4 7 uF 6 3V K X5R TC 1608 R TP 7 C517 CAP CERAMIC CHIP ECCH0000122 47 pF 50V J NP0 TC 1005 R TP 7 C518 CAP CERAMIC CHIP ECCH0000122 47 pF 50V J NP0 TC 1005 R TP 7 C524 CAP CER...

Page 199: ...F 10V K X7R HD 1005 R TP 7 C549 CAP CERAMIC CHIP ECCH0000143 1 nF 50V K X7R HD 1005 R TP 7 C707 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 7 C708 CAP CERAMIC CHIP ECCH0000198 2 2 uF 6 3V M X5R TC 1005 R TP 7 C709 CAP CERAMIC CHIP ECCH0012001 7 pF 50V Z NP0 HD 1005 R TP empty empty empty 55TO 125C empty empty 5 mm 7 C710 CAP CERAMIC CHIP ECCH0000901 2 2 pF 50V C NP0 TC 1005 R TP 7 C7...

Page 200: ... 1005 R TP Coil 7 L103 INDUCTOR CHIP ELCH0004733 4 3 nH S 1005 R TP Coil 7 L104 INDUCTOR CHIP ELCH0001034 3 3 nH S 1005 R TP PBFREE 7 L105 INDUCTOR CHIP ELCH0005002 2 7 nH S 1005 R TP 7 L106 INDUCTOR CHIP ELCH0010619 18 nH J 1005 R TP 7 L108 INDUCTOR CHIP ELCH0001034 3 3 nH S 1005 R TP PBFREE 7 L109 INDUCTOR CHIP ELCH0004711 22 nH J 1005 R TP 7 L110 INDUCTOR CHIP ELCH0010619 18 nH J 1005 R TP 7 L1...

Page 201: ...206 10 ohm 1 16W F 1005 R TP 7 R117 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 7 R121 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 7 R200 RES CHIP MAKER ERHZ0000288 470 Kohm 1 16W F 1005 R TP 7 R201 RES CHIP MAKER ERHZ0000222 150 Kohm 1 16W F 1005 R TP 7 R202 RES CHIP MAKER ERHZ0000493 51 Kohm 1 16W J 1005 R TP 7 R203 RES CHIP MAKER ERHZ0000443 2200 ohm 1 16W J 1005 R TP 7 R204 RES CHIP MAKE...

Page 202: ...PAD SHORT SAFP0000501 7 R508 PCB ASSY MAIN PAD SHORT SAFP0000501 7 R512 RES CHIP MAKER ERHZ0004201 121000 ohm 1 16W F 1005 R TP 7 R513 RES CHIP MAKER ERHZ0000439 200 Kohm 1 16W J 1005 R TP 7 R514 RES CHIP MAKER ERHZ0000405 10 Kohm 1 16W J 1005 R TP 7 R515 RES CHIP MAKER ERHZ0000495 56 ohm 1 16W J 1005 R TP 7 R516 RES CHIP MAKER ERHZ0000493 51 Kohm 1 16W J 1005 R TP 7 R517 RES CHIP MAKER ERHZ000049...

Page 203: ...2 8V 1 8V Dual LDO 7 U500 IC EUSY0338301 uMLP 10 PIN R TP High Speed USB Siwitch 2 0 3 7pF 6 5ohm 1 4X1 8 7 U501 IC EUSY0333701 TLLGA 8 PIN R TP OVP 7 U502 FILTER EMI POWER SFEY0006501 SMD 3 TERMINAL EMI FILTER 7 U503 IC EUSY0347301 BCCS 84 PIN R TP PA buck General Buck for RF CMOS Chip IC PMIC 7 U703 IC EUSY0356901 SON6 6 PIN R TP 1 8V 300mA LDO IC LDO Voltage Regulator 7 U704 TRANSFORMER MATCHIN...

Page 204: ... TP 7 C114 CAP CHIP MAKER ECZH0000830 33 pF 50V J NP0 TC 1005 R TP 7 C115 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 7 C116 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 7 C117 CAP TANTAL CHIP ECTH0004807 10 uF 10V M STD 1608 R TP empty empty 55TO 125C empty empty empty empty 7 C118 CAP TANTAL CHIP ECTH0004807 10 uF 10V M STD 1608 R TP empty empty 55TO 125C empty empty e...

Page 205: ...50 W R TP 5 6 15 40 empty R TP 6P 4 7 U103 IC EUSY0295501 TQFN PIN R TP 6 BLU 2 LDO 1 Flash LED Drv 4 4 7 U104 IC EUSY0337101 CSP 12 PIN R TP Touchscreen Controller IC IC A D Converter 6 SAJD00 PCB ASSY SUB SMT TOP SAJD0030301 7 CN101 CONNECTOR BOARD TO BOARD ENBY0016501 50 PIN 0 4 mm STRAIGHT AU 1 5T HEADER MALE 6 SPJY00 PCB SUB SPJY0060501 FR 4 0 5 mm BUILD UP 6 4 SJMY00 VIBRATOR MOTOR SJMY00084...

Page 206: ...Ohm 2 4Ohm 1KHZ 116dB 3dB 1KHZ 3mW 116dB 1KHZ 96dB 100HZ empty BLACK 18P MMI CONNECTOR Earphone Stereo 3 SSAD00 ADAPTOR AC DC SSAD0024504 100 240V 5060 Hz 5 1 V 7 A CE AC DC ADAPTOR 85Vac 264Vac 5 1V 0 15V 0 2V 700mA 5060 WALL 2P I O CONNECTOR 㾌 ADAPTOR AC DC SSAD0024501 100 240V 5060 Hz 5 1 V 7 A CE AC DC ADAPTOR 85Vac 264Vac 5 1V 0 15V 0 2V 700mA 5060 WALL 2P I O CONNECTOR 㾌 ADAPTOR AC DC SSAD00...

Page 207: ... 208 LGE Internal Use Only Copyright 2008 LG Electronics Inc All right reserved Only for training and service purposes Note ...

Reviews:

No comments

Related manuals for KB770

Brand: TCL Pages: 35

Brand: Pantech Pages: 126

Brand: 101VOICE Pages: 2

Brand: Eads Telecom Pages: 2

Brand: Radio Shack Pages: 64

Brand: Kalley Pages: 32

Brand: Yealink Pages: 361

Brand: Yealink Pages: 7

Brand: Yealink Pages: 4

Brand: Yealink Pages: 2

Brand: Yealink Pages: 7

Brand: UMX Pages: 12

Brand: Audiovox Pages: 137

Brand: GE Pages: 40

Brand: Mitsubishi Pages: 72

selfie dexule flash

Brand: ultron Pages: 2

Brand: Yealink Pages: 28

Brand: Doro Pages: 48

Brands by name

0 1 2 3 4 5 6 7 8 9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Popular brands

Load more brands