LG CU720 Black Service Manual Download Page 30

Page: 30 / 204

LGE Internal Use Only

3. TECHNICAL BRIEF

- 31 -

3.5.4 VCTCXO

The Voltage Controlled Temperature Compensated Crystal Oscillator (VCTCXO) provides the reference

frequency for all RFIC synthesizers as well as clock generation functions within the MSM6280 IC. The

oscillator frequency is controlled by the MSM6280 IC.s TRK_LO_ADJ pulse density modulated signal in the

same manner as the transmit gain control TX_AGC_ADJ. A two-pole RC lowpass filter is recommended on

this control line.

The PM6650 IC controls the handset power-up sequence, including a special VCTCXO warm-up interval

before other circuits are turned on. This warm-up interval (as well as other TCXO controller functions) is

enabled by the MSM TCXO_EN line . The PM6650 IC VREG_TCXO regulated output voltage is used to

power the VCTCXO and is enabled before most other regulated outputs.

Any GSM mode power control circuits within the MSM6280 IC require a reference voltage for proper

operation and sufficient accuracy. Connecting the PM6650 IC REF_OUT directly to the MSM6275 IC

GSM_PA_PWR_CTL_REF provides this reference. This sensitive analog signal needs a 0.1 µF low

frequency filter near to MSM side, and isolate from digital logic and clock traces with ground on both sides,

plus ground above and below if routed on internal layers

3.5.5 PMIC Functional Block Diagram

• 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 programmable thresholds

- VDD collapse protection

- Charger current regulation and real-time monitoring for over-current protection

- Charger transistor protection by power limit control

- Control drivers for two external pass transistors and one external battery MOSFET-MOSFET is

optional

- Voltage, current, and power control loops

-Automated recovery from sudden momentary power loss

• Output voltage regulation

- One boost (step-up) switched-mode power supply (SMPS) for driving white LEDs and hosting

USBOTG

- Three buck (step-down) switched-mode power supplies that efficiently generate MSMC, MSME, and

PA (or second MSMC) supply voltages

- Supports dynamic voltage scaling (DVS) for MSMC and PA

- Eleven low dropout regulator circuits with programmable output voltages, implemented using three

different current ratings: 300 mA (two), 150 mA (six), and 50 mA (three). These can be used to

power MSMA, MSMP, RFRX1, RFRX2, RFTX, SYNT, TCXO, WLAN, MMC, USB, and RUIM

circuits.

Z3X-BOX.COM

Summary of Contents for CU720 Black

Page 1: ...Date November 2007 Issue 1 0 Service Manual Model CU720 Service Manual CU720 Internal Use Only Z 3 X B O X C O M ...

Page 2: ...oting 101 4 11 Charger Troubleshooting 103 4 12 USB Troubleshooting 106 4 13 USIM Detect Troubleshooting 108 4 14 Camera Troubleshooting 110 4 15 Keypad Backlight Troubleshooting 113 4 16 Folder ON OFF Troubleshooting 115 4 17 Main LCD Troubleshooting 116 4 18 Receiver Path 117 4 19 Headset path 119 4 20 Speaker phone path 121 4 21 Main microphone 123 4 22 Headset microphone 125 4 23 Vibrator 127 ...

Page 4: ...ted 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 provided to customer is faulty and possibly causing harm or interruption in service to the telephone network it should disconnect telephone service until repair can be done A telephone company may temporarily disconnect s...

Page 5: ... with sensitive laboratory equipment medical equipment etc Interference from unsuppressed engines or electric motors may cause problems H Electrostatic Sensitive Devices ATTENTION Boards which contain Electrostatic Sensitive Device ESD are indicated by the sign Following information is ESD handling Service personnel should ground themselves by using a wrist strap when exchange system boards When r...

Page 6: ...l 910 mAh Li Ion Talk Time Over 180 min WCDMA Tx 13 dBm Voice with 910mAh Over 180 min GSM Tx Level 5 Voice Standby Time Over 250 Hrs WCDMA DRX 1 28 with 800mAh Over 250 Hrs GSM Paging frame class6 Antenna Internal type LCD Main 2 2 262K 240 X 320 pixel TFT LCD Backlight White LED Back Light Camera Fixed Focus 2 0 Mega pixel CMOS Vibrator Yes Coin Type LED Indicator No MIC Yes Receiver Yes Earphon...

Page 7: ... Min Shut Down 3 1 V Operation Temp 20 60 C Storage Temp 20 70 C Humidity 85 Max Reference Spec Min Typ Max Unit TA Power Available power 100 110 240 Vac No Item GSM DCS PCS 100k 1GHz 39dBm 9k 1GHz 39dBm MS allocated 1G A MHz 33dBm Channel 1G 12 75GHz 33dBm A M B MHz 39dBm Conducted B M 12 75GHz 33dBm 1 Spurious 100k 880MHz 60dBm 100k 880MHz 60dBm Emission 880M 915MHz 62dBm 880M 915MHz 62dBm Idle ...

Page 8: ...m B M 4GHz 47dBm B M 4GHz 47dBm 3 Frequency Error 0 1ppm 0 1ppm 4 Phase Error 5 RMS 5 RMS 20 PEAK 20 PEAK 3dB below reference sensitivity 3dB below reference sensitivity Frequency Error RA250 200Hz RA250 250Hz 5 Under Multipath and HT100 100Hz HT100 250Hz Interference Condition TU50 100Hz TU50 150Hz TU3 150Hz TU1 5 200Hz 0 100kHz 0 5dB 0 100kHz 0 5dB 200kHz 30dB 200kHz 30dB 250kHz 33dB 250kHz 33dB...

Page 9: ...be Less than 55dB below the level of Wanted signal Power control Power Tolerance Power control Power Tolerance 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 8 Transmitter Output Power 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 15 0 5 9 Burst tim...

Page 10: ...l command group 1 8 12 16 24 5 Minimum Output Power 50dBm 3 84MHz Qin Qout PCCH quality levels 6 Out of synchronization handling of output power 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 25us 9 Change of TFC Power varies according to the data rate DTX DPCH off minimize interference between UE ...

Page 11: ...m f 50KHz 30MHz 10K BW 36dBm f 30MHz 1000MHz 100K BW 14 Spurious Emissions 30dBm f 1 12 5GHz 1M BW additional requirement 41dBm f 1893 5 1919 6MHz 300K 67dBm f 925 935MHz 100K BW 79dBm f 935 960MHz 100K 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 Pow...

Page 12: ...c 7dB Storage 30 85 TCH FS Class II RBER TU high FH 3 Adjacent Channel 200kHz C Ia1 12dB C Ia1 12dB Rejection 400kHz C Ia2 44dB C Ia2 44dB Wanted Signal 98dBm 1st Wanted Signal 96dBm 1st 4 Intermodulation Rejection interferer 44dBm 2nd interferer 44dBm 2nd interferer 45dBm interferer 44dBm 5 Blocking Response Wanted Signal 101dBm Wanted Signal 101dBm TCH FS Class II RBER Unwanted Depend on Frequen...

Page 13: ... 20dBm output power Class3 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 5 Out band Blocking 2230 2255MHz UE 20dBm output power Class3 15dBm 3 84MHz f 1 2025 and 2255 12500MHz UE 20dBm output power Class3 6 Spurious Response 44dBm CW UE 20dBm output power Class3 46dBm CW 10MHz 7 Intermodulation...

Page 14: ... Voice Call VT WCDMA Under 3 64 mA Under 303 3 mA DRX 1 28 Tx 13dBm Under 3 64 mA Under 303 3 mA GSM Paging frame class6 PCL 5 Level Change WCDMA GSM BAR 5 4 87 2 dBm 87 2 dBm BAR 4 3 92 2 dBm 92 2 dBm BAR 3 2 97 2 dBm 97 2 dBm BAR 2 1 100 2 dBm 102 2 dBm BAR 1 0 103 2 dBm 108 2 dBm Indication Standby Bar 3 Over 3 75 0 05V Bar 3 2 3 75 0 05V Bar 2 1 3 66 0 05V Bar 1 Empty 3 58 0 05V Low Voltage 3 ...

Page 15: ...ceiving Loudness Rating RLR Nor 2 3 dB Max Under 13 dB 3 Side Tone Masking Rating STMR Nor 13 23 dB 4 Echo Loss EL Min Over 46 dB 5 Idle Noise Sending INS Max Under 64 dBm0p 6 Idle Noise Receiving INR Nor Under 57 dBPA Max Under 57 dBPA 7 Sending Loudness Rating SLR 8 3dB 8 Receiving Loudness Rating RLR Nor 1 3 dB Max 12 3 dB 9 Side Tone Masking Rating STMR Min Over 25 dB 10 Echo Loss EL Min Over ...

Page 16: ...rs and the UMTS transmitter use the radioOne1 Zero IF architecture to eliminate intermediate frequencies directly converting signals between RF and baseband The quad band GSM transmitters use a baseband to IF upconversion followed by an offset phase locked loop that translates the GMSK modulated or 8 PSK modulated signal to RF 1 QUALCOMM s branded chipset that implements a Zero IF radio architectu...

Page 17: ...verted directly to baseband in the RTR6275 transceiver 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 translate...

Page 18: ...cts to one of six paths 1 UMTS 850 Rx Tx 2 UMTS 1900 Rx Tx 3 GSM 850 Rx 4 GSM 900 Rx 5 GSM 850 900 Tx lo band Tx s share the same path 6 DCS 1800 Rx and 7 DCS 1800 PCS 1900 Tx High Band Tx s share the same path 8 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 signals GSM850 900 DCS...

Page 19: ...rs this is accomplished in the switch module The GSM850 GSM900 DCS and PCS receive signals are routed to the RTR6275 through band selection filters and matching networks that transform single ended 50 Ω sources to differential impedances optimized for gain and noise figure The RTR input uses a differential configuration to improve second order inter modulation and common mode rejection performance...

Page 20: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF 21 Fig 3 2 1 RTR6275 RX feature Z 3 X B O X C O M ...

Page 21: ...out the band center frequency the suggested starting value is shown in Figure1 2 2 The RTR6275 IC is able to support GSM850 900 and GSM 1800 1900 mode transmitting This design guideline shows a quad band GSM application Both high band and low band outputs are followed by resistive pads to ensure that the load Presented to the outputs remains close to 50ohm The low band GSM Tx path also includes a ...

Page 22: ...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 the dynamic range of the receivers T...

Page 23: ...at 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 design for multimode applications The PLL circuits include a reference divider phase detector charge pump fe...

Page 24: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF 25 Figure 3 3 2 RTR6275 IC functional block diagram Z 3 X B O X C O M ...

Page 25: ...ers are integrated within the RTR6275 IC The first synthesizer PLL1 creates the transceiver LOs that support the UMTS 2100 1900 1800 transmitter and all four GSM band receivers and transmitters including GSM 850 GSM 900 GSM 1800 and GSM 1900 The second synthesizer PLL2 provides the LO for the UMTS 2100 1900 1800 receiver An external TCXO input signal is required to provide the synthesizer frequenc...

Page 26: ...tion value is about 45 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 band losses between the PA...

Page 27: ...s while achieving a 25 PCB space savings compared with solutions requiring two single band Pas The package pin out was chosen enable handset manufacturers to easily route VCC to both power amplifiers and simplify control with a common VMODE pin The device is manufactured on an advanced InGaP HBT MMIC technology offering state of the art reliability temperatures stability and ruggedness The AWT6321...

Page 30: ...al logic and clock traces with ground on both sides plus ground above and below if routed on internal layers 3 5 5 PMIC Functional Block Diagram 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 ...

Page 31: ...cklight camera flash and general purpose drivers Vibration motor driver 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 interr...

Page 32: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF 33 Figure 3 5 5 1 MSM6280 Interface Z 3 X B O X C O M ...

Page 33: ... 34 3 TECHNICAL BRIEF LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure3 5 5 2 PM6650 Block Diagram Z 3 X B O X C O M ...

Page 34: ...ions and serves as the AM AM path in EDGE operations This eliminates the need for any external couplers power detectors current sensing etc to assure the output power level The module has Tx enable and band select inputs Module construction is a low profile overmolded land grid array on laminate LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and servic...

Page 35: ... 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 rejection of this Tx band leakage Other frequencies of particular concern bands known to include other wireless transmi...

Page 36: ... other bluetooth components are an bluetooth RF module and Antenna Figure1 5 12 1 shows the bluetooth system architecture in the CU720 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure3 5 8 Bluetooth system architecture MSM6280 Bluetooth baseband Z 3 X B O X C O M ...

Page 37: ...cation 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 with video front end VFE image processing True 3D graphics for advanced wireless gaming SecureMSM v2 0 includes support for Open Mobile Alliance OMA DRM v2 0 ...

Page 38: ...Default 8bit Interface GRAPHICS VIDEO AUDIO DUAL MEMORY BUS Modem QDSP 4000 PLL QDSP 4000 ARM 926ejs With Jazelle UMTS WCDMA HSDPA processor BT 1 2 processor Rx ADC Tx DAC MP3 AAC EVRC QCELP AMR CMX MIDI EBI 1 EBI 2 Open GL ES 3D 2D MPEG 4 H 263 H 264 Keypad I F USB UART1 UART2 RUIM1 UART3 PMIC SBI Camera 2M I O Conn NAND Flash 2Gbit SDRAM 1Gbit LCD 2 2inch PM6650 3P GSM GPRS EDGE processor JTAG R...

Page 39: ...ith the following restrictions The downlink supports the following specifications Up to four physical channels including the broadcast channel BCH if present Up to three dedicated physical channels DPCHs Spreading factor SF range support from 4 to 256 The following transmit diversity modes are supported Space time transmit diversity STTD Time switched transmit diversity TSTD Closed loop feedback t...

Page 40: ... R5 specifications 25 101 Supports network activation of compressed mode by SF 2 or HLS on the DPCH for conducting inter frequency or inter RAT measurements when the HS DSCH is active Supports STTD on both associated DPCH and HS DSCH simultaneously Supports CLTD mode 1 on the DPCH when the HS PDSCH is active Supports STTD on HS SCCH when either STTD or CLTD Mode 1 are configured on the associated ...

Page 41: ...t 11 bit RACH PBCCH support 1 phase 2 phase access procedures Link adaptation and IR NACC extended UL TBF 3 7 7 MSM6280 device audio processing features Integrated wideband stereo CODEC 16 bit DAC with typical 88 dB dynamic range Supports sampling rates up to 48 kHz on the speaker path and 16 kHz on the microphone path VR Voice mail voice memo Acoustic echo cancellation Audio AGC Audio Codecs AMR ...

Page 42: ...ipherals EBI2 such as LCD panels 1 8 V or 2 6 V memory interface support excluding EBI1 NAND FLASH memory interface 8 16 bit data I O width NAND flash support 1 or 4 bit ECC 512 byte 2KB page size support 2 chip selects supported for NAND Flash Boot from NAND Low power SDRAM LP SDRAM interface Internal watchdog and sleep timers 3 7 9 Supported interface features USB On the Go core supports both sl...

Page 43: ...roadcast 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 services QvideophoneTM A two way mobile video conferencing solution that delivers 15 fps QCIF Video Codecs supported MPEG 4...

Page 44: ...rmats 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 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Z 3 X B O X C O M ...

Page 45: ... 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 downloads the firmware into the QDSP4000 and configures QDSP4000 to support the desired functionality 3 7 14 ARM Microprocess...

Page 46: ... 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 serial bus USB controller that supports both unidirectional and bidirectional transceiver interfaces The USB controller acts ...

Page 47: ...ng 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 trimmed voltage reference A dedicated controller manages the TCXO warm up and signal buffering and key parameters under voltage...

Page 48: ... 49 3 TECHNICAL BRIEF LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure 3 8 2 PM6650 Functional Block Diagram Z 3 X B O X C O M ...

Page 49: ...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 and Drain or collector contacts of the pass transistor respectively LGE Internal Use Only Copyright 2007 LG ...

Page 50: ...e 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 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Parameter Min Typ Max Unit Trickle Current 60 80 100 mA Z 3 X B O X C O M ...

Page 51: ...nt 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 910mAh Charger Voltage 4 8V Charging time Max 3h Except time trickle charging Full charge indication current icon stop current 100mA Low battery POP UP Idle 3 49V Dedicated GSM WCDMA 3 ...

Page 52: ...R burst PSRAM Synchronous DRAM memories supported Byte addressable memory supporting 8 bit 16 bit and 32 bit accesses Pseudo SRAM PSRAM memory support 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 por...

Page 53: ...vice purposes Figure Simplified Block Diagram of Memory Interface 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 Z 3 X B O X C O M ...

Page 54: ...PIO65 TCK RTCK H16 F26 SBDT1_GPIO1 SBST1_GPIO93 H18 PA_ON0 F17 PA_ON1_GPIO2 H11 AA25 Q_IM_CH0 Q_IM_CH1 W23 Y25 Q_IP_CH0 Q_IP_CH1 V23 B12 Q_OUT A12 Q_OUT_N AE13 LCD_EN_GPIO37 AB25 I_IM_CH0 V25 I_IM_CH1 AC25 I_IP_CH0 I_IP_CH1 W25 I_OUT B13 I_OUT_N A13 GRFC1_AUX_SBDT_GPIO4 D9 GRFC2_GPIO5 GRFC3_GPIO6 F10 GRFC4_AUX_SBCK_GPIO7 H10 D11 GRFC5_AUX_SBST_GPIO8 GRFC7_GPIO10 T23 B4 GRFC8_GPIO11 D5 GRFC9_GPIO12...

Page 55: ...purposes B the others TRK_LO_ADJ TCXO 19 2M Control PA_ON WCDMA 1900 TX Power Amp Enable ANT_SEL 0 2 Ant Switch Module Mode Selection WCDMA GSM Tx Rx DCS PCS Tx Rx GSM_PA_BAND GSM DCS PCS Band Selection of Power Amp GSM_PA_RAMP Power Amp Gain Control of APC_IC GSM_PA_EN Power Amp Gain Control Enable of APC_IC Z 3 X B O X C O M ...

Page 56: ...ere control signals are followed USIM_CLK USIM Clock USIM_Reset USIM Reset 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 MSM6280 PM6650 USIM USIM CLK USIM Reset USIM Data USIM Data USIM Reset USIM CLK VREG_UIM 2 85V Figure SIM Interface GPIO_Map Name Note GPIO_96 UART_RXD Data_Rx GPIO_95 UART_TXD Data_Tx Table UAR...

Page 57: ...vision 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 Name Note USB_DAT Data to from MSM USB_SE0 Data to from MSM USB_OE_N Out Put Enable of Transceiver USB_VBUS USB_Power From Host PC USB_D USB Data to Host USB_D USB Data to Host Table USB Signal Interface Figure Schematic of USB block MSM6280 Side PM6650 Side USB_DA...

Page 58: ...arameters 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 Figure MSM6280HKADC Block diagram Table HKADC channel table PCB Version Check PCB_Rev_ADC HKADC4 Ear jack Detection for TTY TTY_ADC_DET HKADC2 Do not use REMOTE_ADC HKADC3 Battery Temperature Check Battery voltage level RF PAM Tempe...

Page 59: ...e purposes Table Key Matrix Mapping Table Figure Main Keypad Circuit CAM Side Hot COL 4 UP SIDE UP 0 ROW 4 DOWN SIDE DOWN 9 8 7 ROW 3 LEFT 6 5 4 ROW 2 RIGHT RHK 3 2 1 ROW 1 OK LHK CLR SEND ROW 0 COL 5 JOGKEY COL 3 COL 2 COL 1 COL 0 HOT4 0 HOT5 SND BACK 1 2 3 4 5 6 7 8 9 HOT702 704 CLR 708 707 705 706 R705 10K SND 710 709 HOT701 RA701 2 4 6 8 1 3 5 7 10K 703 701 702 KEY_ROW 2 KEY_ROW 4 KEY_ROW 1 KE...

Page 60: ...es Figure Multi function Keypad Circuit HOT0 HOT1 900 901 INSTPAR KEY_ROW 1 KEY_COL 3 ESD9X5 0ST5G ZD900 KEY_ROW 0 Figure Side Keypad Circuit Rev 1 0 100ohm R704 RSB6 8CST2R RSB6 8CST2R D704 D702 RSB6 8CST2R D703 CN701 1 2 3 4 5 6 R702 470 D701 RSB6 8CST2R R701 470 R703 100ohm KEY_COL 4 KEY_COL 3 KEY_ROW 3 KEY_ROW 4 Z 3 X B O X C O M ...

Page 61: ...ce purposes Figure Navigation key Keypad Circuit RIGHT NAVIGATION KEY UP LEFT DOWN OK R905 0 4 SE SW 6 W 7 COM1 10 COM2 11 12 COM3 E 3 G1 13 G2 14 15 G3 16 G4 N 1 2 NE 8 NW 9 PUSH S 5 ZD901 ESD9X5 0ST5G SW900 NA R902 INSTPAR NA R906 KEY_ROW 0 KEY_COL 5 KEY_ROW 4 KEY_ROW 3 KEY_ROW 2 KEY_ROW 1 Figure END Keypad Circuit END Rev 1 0 2 ON_SW KEY SIDE EVL14S02200 VA701 ON END PM_ON_SW_N Z 3 X B O X C O ...

Page 62: ...NECTOR T 0 9 SOCKET Rev D rev 1 0 Rev C Rev C AXK7L24227 C800 NA 10u C813 V 0 1u C802 FB800 HB 1M1005 600JT 7 8 9 14 15 16 17 18 19 2 20 21 22 23 24 3 4 5 6 G1 G2 G3 G4 1 10 11 12 13 CN800 HB 1M1005 601JT FB801 EVLC18S02015 VA813 VA814 EVLC18S02015 0 1u C801 M_CAM_RESET_N M_CAM_PWDN CAM_VDDIO_2 8V 2M_CAM_VDDC_1 5V 2M_CAM_VDDA_2 8V CAM_MCLK_C CAM_HSYNC_C CAM_VSYNC_C I2C_SDA I2C_SCL CAM_PCLK_C CAM_D...

Page 63: ...lled by I2C port from MSM6280 Table Interface between MEGA Camera Module and MAIN PCB in camera module Vertical Sync O VSYNC 20 Horizontal Synch O HSYNC 19 Master Clock 24 576M I CLKIN 18 GND GND GND 17 VDDIO 2 8V I CAM_VDDIO_2 8V 15 VDDA 2 8V I 2M_CAM_VDDA_2 8V 16 GND GND GND 21 Data O CAM_DATA 6 3 Data O CAM_DATA 5 4 Data O CAM_DATA 4 5 Data O CAM_DATA 3 6 O CAM_DATA 2 7 I2C Data O CAM_DATA 1 8 ...

Page 64: ...at pin OUT of U701 goes to 0V Otherwise 2 7V This folder signal is delivered to MSM6280 GPIO92 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure Schematic of Folder ON OFF detection circuit Rev C SLIDE DETECT 0 1u VDD VSS 4 VREG_MSMP_2 7V C701 EM 1681 FT U701 NC 3 2 OUT 1 FOLDER_DETECT Z 3 X B O X C O M ...

Page 65: ...Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure Schematic of KEY back light circuit KEY side Figure Schematic of KEY back light circuit UP slide side Rev 1 0 3 Rev 1 0 3 KEY LED 100ohm R710 LD702 LEWWS44 E R711 4 7K 3 1 PMST3904 Q701 2 LEWWS44 E LD701 RSB6 8CST2R VA714 RSB6 8CST2R VA713 100ohm R709 RSB6 8CST2R VA712 VPWR KEY_BL_EN LD900 SSC T...

Page 66: ...otek This LCD Module has a 2 2 inch diagonally measured active display area with 240 RGB X320 resolution each pixel is divided into Red Green and Blue sub pixels and dots which are arranged in vertical stripes Features Display mode Main LCD Normally Black Transmissive VA mode 265K colors LCD Driver IC ER61505U Hitachi Driving Method A Si TFT Active Matrix 16 bit CPU interface Parallel Figure LCD M...

Page 67: ...M_HSYNC CAM_VSYNC CAM_DATA 0 KYBD_BACKLIGHT CAM_DATA 1 CAM_DATA 2 CAM_DATA 3 CAM_DATA 4 CAM_DATA 5 CAM_DATA 6 CAM_DATA 7 WLED_PWR CAM_MCLK CAM_PCLK I2C_SCL I2C_SDA VGA_CAM_RESET EBI2_WE_N_F LCD_ADS_F LCD_CS_N_F MAIN_LED4 VPWR KEY_COL 3 KEY_ROW 2 Rev 1 0 LCD EMI FILTER Key Main INOUT_B4 6 EVRC14S03Q030100R FL601 G1 5 G2 10 INOUT_A1 1 2 INOUT_A2 INOUT_A3 3 4 INOUT_A4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3...

Page 68: ... 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 designe...

Page 69: ... C268 10p C230 0 1u 0 1u C232 SDCC_DAT1_GPIO99 F25 M25 SDCC_DAT2_GPIO100 SDCC_DAT3_GPIO101 M26 MDP_VSYNC_PRIMARY_GPIO105 AD2 AE3 MDP_VSYNC_SECONDA_GPIO104 MIC1N AF20 MIC1P AE20 AF21 MIC2N AF22 MIC2P MICBIAS T15 LINE_L_IN AC21 AC22 LINE_L_IP AC18 LINE_ON LINE_OP AC17 AC20 LINE_R_IN LINE_R_IP AC19 W17 AA17 HPH_R HPH_VREF AA19 HPH_L EAR1ON AE18 EAR1OP AF18 CCOMP AA20 AF19 AUXIN AE19 AUXIP AUXOUT AA18...

Page 70: ...urposes Figure Audio part schematics Rev 1 0 rev 1 0 3 rev 1 0 3 Rev 1 0 2 MIC R326 0 C321 22u G1 2 3 G2 1 O 4 P MIC301 SPM0204HE5 PB 3 MIC1N MIC1P MICBIAS TTY DETECT Rev 1 0 Rev 1 0 3 Rev 1 0 2 Rev 1 0 Hook Key Logic Deleted R301 R302 2 2K 0 resistor NA C302 22u C301 0 R325 TTY_ADC_DET EAR_MIC2P MICBIAS MIC2P Z 3 X B O X C O M ...

Page 71: ...1J FB301 C316 15p C317 C304 15p 0 01u C327 R319 0 NA TPA6205A1DRBR 2 BYPASS 7 GND IN 3 IN 4 9 PGND VDD 6 5 VO 8 VO _SHUTDOWN 1 U302 R317 12ohm 100K R322 LINE_OP VPWR LINE_ON SPK_AMP_EN RCV RCV SPK_EN VPWR SPK_RCV SPK_RCV Rev D Rev 1 0 3 rev 1 0 3 MMI CONNECTOR p 680K R506 6 8CST2R 6 8CST2R 6 8CST2R 3 4 CN502 1 2 22 3 4 5 6 7 8 9 1 10 11 12 13 14 15 16 17 18 19 2 20 21 CN501 HSEJ 18S04 25R VLC14S02...

Page 72: ...dset MIDI Bell Headset Speaker MP3 Loud Mode MP3 Speaker MIDI Bell Loud Mode MIDI Speaker Phone Loud Mode Headset Voice Call Headset Speaker Phone Loud Mode Speaker phone Receiver Voice Call Description Receiver Mode Voice Call Device MODE 8 ohm Speaker EMS1810TCD1P Speaker Receiver 4 42 dB microphone SPM0204HE5 PB 3 MIC301 MIC 5 NOT INBOX 18PIN Ear jack 6 Dual Analog Switch FSA2267L10X U301 Analo...

Page 73: ...ga Camera VGA TU720 only 18x10 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 910 mAh Li Ion LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Z 3 X B O X C O M ...

Page 74: ...GE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Main board Top Main board Bottom LCD FPCB Folder RF Logic Audio Logic Bluetoot h ANT Bluetooth SUB PCB Bottom SUB PCB Top Z 3 X B O X C O M ...

Page 75: ... right reserved Only for training and service purposes U101 U106 X101 M101 U102 SW101 FL101 U107 WCDMA PAM U106 BT module M101 GSM PAM U102 RFR6275 U107 Front End module FL101 RTR6275 U101 Mobile connector SW101 Description Reference Description Reference X101 VCTCXO Z 3 X B O X C O M ...

Page 76: ...ed Only for training and service purposes U303 CN601 U201 CN502 CN501 U302 U400 CN702 Audio AMP U302 Main to Key FPCB Connector CN601 Battery connector U400 PMIC U303 Description Reference Description Reference Memory MCP U201 MSM6280 CN501 MMI connector 18pin CN502 Main to SUB Conn CN702 Z 3 X B O X C O M ...

Page 78: ... TROUBLE SHOOTING 4 TROUBLE SHOOTING LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 1 RF Component Fig 4 1 1 BOTTOM SIDE Z 3 X B O X C O M ...

Page 79: ...533 FL102 TX GSM TX Dual PAM TQM7M5003 U102 GSM GSM RX W850 RX SAW filter B7838 FL106 TRX WCDMA GSM Transceiver RTR6275 U101 Bluetooth TRX Bluetooth RF Transceiver LBRQ 2B43A M101 Bluetooth Bluetooth 19 2MHz VCTCXO TG 5010LH 19 2MHz X101 Calibration etc Test Connector KMS 518 SW101 2G NAND 1G SDRAM Memory TYA000BC00HOGG U303 Band select Switch LMSP4LMA 573TEMP FL101 AMP Speaker AMP TPA2005D1DRBR U...

Page 80: ...Path 81 4 TROUBLE SHOOTING LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes W850 TX path W1900 TX path W850 RX path W1900 RX path TX RX IQ Z 3 X B O X C O M ...

Page 81: ...07 LG Electronics Inc All right reserved Only for training and service purposes 4 4 GSM RF Signal Path 4 TROUBLE SHOOTING 82 G850 G900 TX path DCS PCS TX path G850 Rx path G900 Rx path DCS RX path PCS RX path TX RX IQ Z 3 X B O X C O M ...

Page 82: ...TCXO 0 1u 1u C149 C150 R115 C151 0 01u 100ohm 4 VCC 5 U104 2 GND 1 TC7SH04FS 1000p C162 R117 100K X101 2 GND 3 OUT VCC 4 VCONT 1 TG 5010LH_19_2M_75A 19 2MHz 1000p C156 1000p C161 C154 100p C164 1000p R118 51 TRK_LO_ADJ VREG_TCXO_2 85V VREG_BT_2 85V RFR6275_TCXO RTR6275_TCXO TCXO_BT TCXO_PM Fig 4 5 1 Schematic of the TCXO Block Fig 4 5 2 VCTCXO 19 2MHz Wave Fig 4 5 3 Test Point of the TCXO Block TP...

Page 83: ...t 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 84 Check C411 of PMIC U402 Check R214 of MSM U200 Check TP1 VCC of TCXO Fig 4 5 3 Test Point of the TCXO Block Z 3 X B O X C O M ...

Page 84: ...33p 8 25 GSM850_900TX GSM900RX1 5 6 GSM900RX2 17 NC 15 UMTS1 UMTS2 16 14 VC1 VC2 13 12 VC3 VC4 11 10 VDD ANT GND1 9 18 GND2 GND3 20 21 GND4 GND5 23 24 GND6 26 GND7 27 GND8 GND9 28 GSM1800RX1 1 2 GSM1800RX2 GSM1800_1900TX 22 GSM1900RX1 3 4 GSM1900RX2 7 GSM850RX1 GSM850RX2 FL101 LMSP4LMA 573TEMP 19 C112 120p ANT_SEL3 ANT_SEL0 ANT_SEL1 ANT_SEL2 VREG_RF_SMPS Fig4 6 2 Test Point of the Front End Module...

Page 85: ...UBLE SHOOTING LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Fig 4 6 3 Logic Table of the FEM Fig 4 6 4 Check Flow of the FEM Z 3 X B O X C O M ...

Page 86: ... 8 2p C153 ANT GND1 GND2 GND3 GND4 GND5 GND6 RX TX B7638 FL103 1 5nH L123 R116 51 R121 120 TX FL104 ACMD 7402 TR1G ANT G1 G2 G3 G4 G5 G6 G7 RX L122 12nH L127 4 7nH C171 NA 68p C155 C160 10u 0 01u C163 C174 1000p 0 01u C157 120 R120 51 R119 56p C152 33p C169 C172 1 5p 14 GND4 15 PGND 2 RFIN_CELL 6 RFIN_PCS RFOUT_CELL 13 RFOUT_PCS 8 4 VBATT VCC 12 11 VCCA VEN_CELL 1 VEN_PCS 7 VMODE 3 U106 AWT6321R G...

Page 87: ...ck Check coupler U103 or U105 Check Duplexer FL103 or FL104 Check FEM FL101 Run a FTM program Set RF mode to WCDMA_1900B or WCDMA_800 Set Uplink Chan to 9400 or 4182 Click Tx ON and WCDMA Set PA range R1 On Set TX AGC to 400 Check TP6 or TP7 Over 5 dBm Check TP2 or TP3 Over 23dBm Check TP4 or TP5 Over 22dBm Fig 4 7 1 3 Check Flow of the WCDMA TX Block Z 3 X B O X C O M ...

Page 88: ...ted value Check R119 2 TX_AGC_ADJ UMTS RTR6275 Tx Amp Gain Control 3 VPWR UMTS PAM Main Voltage 3V VPWR 4 2V 4 PA_ON1 Enable W850 band C163 5 PA_ON2 Enable W1900 band C174 6 PA_R1 Control signals that step the active PA mode and bias WCDMA 850 1900 Coupler PWR_DET R119 VPWR PA_ON2 W1900 enable Check C174 PA_ON1 W850 enable Check C163 WCDMA Dual PAM W850 W1900 Fig 4 7 2 1 Test point of the WCDMA PA...

Page 89: ...638 FL103 TX FL104 ACMD 7402 TR1G ANT G1 G2 G3 G4 G5 G6 G7 RX C171 NA 56p C152 33p C169 RX_WCDMA_850 WCDMA_850 WCDMA_1900 RX_WCDMA_1900 REV D REV D REV D REV D C203 47p C187 NA 15nH 82p C196 L132 3 3nH L138 4 7p C185 22nH L133 L131 22nH 3 O1 4 O2 B7838 FL106 2 G1 5 G2 1 IN NA C202 3 9nH L134 C194 47p IN 3 O1 4 O2 B7847 FL107 G1 2 5 G2 1 100p C182 C180 4 7p L139 3 9nH 3 9nH L137 1 8p C201 1 8p C195...

Page 90: ...erved Only for training and service purposes Fig 4 7 3 3 Check Flow of the WCDMA RX Block Check Vbias over 2V Check the RF S W Check FEM Check the Duplexer FL103 FL104 Check the RTR6275 IQ signal Check TP2 TP4 Signal exist Check TP3 TP5 Signal exist Check TP7 TP8 Signal exist Z 3 X B O X C O M ...

Page 91: ...00 GND2 3 4 GND3 GND4 6 8 GND5 RFIN 1 5 RFOUT VC 7 FL102 LMSM32AA 533 2 GND1 51 R105 C137 L118 22u C128 NA 3 9nH L117 C127 3 3nH 1 2p R108 120 120 R107 120 R112 R111 120 R110 56 68p C148 C129 33nH C130 NA GSM_SAW_SW_MODE DCS_PCS_TX GSM_TX GSM_PA_RAMP GSM_PA_BAND GSM_PA_EN VPWR rev B C101 56p A C G1 G2 KMS 518 SW101 100nH L103 8 25 GSM850_900TX GSM900RX1 5 6 GSM900RX2 17 NC 15 UMTS1 UMTS2 16 14 VC1...

Page 92: ... 93 4 TROUBLE SHOOTING LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Fig 4 8 1 3 Check Flow of the GSM TX Block Z 3 X B O X C O M ...

Page 93: ...gh G900 Low G850 4 TROUBLE SHOOTING 94 Fig 4 8 2 1 Test point of the GSM PAM Block Fig 4 8 2 2 Schematic of the GSM PAM Block TP4 TP5 TP1 TP3 TP2 8 1dB REV D 7 75dB remain LOW when not transmitting LOW HIGH GSM850 EGSM C139 100p 39p C147 4 VBATT 12 VCC 6 VRAMP 2 BS DCS_PCS_IN 1 15 DCS_PCS_OUT GND1 5 GND2 8 GND3 10 11 GND4 GND5 13 14 GND6 16 GND7 GND8 17 7 GSM_IN 9 GSM_OUT TX_EN 3 TQM7M5003 U102 2 ...

Page 94: ... point of the GSM RX Block Fig 4 8 3 2 Schematic of the GSM RX Block TP2 TP1 TP3 TP4 rev 1 0 2 rev 1 0 2 rev 1 0 2 rev B DCS PCS GSM850 EGSM 5 6nH L106 NA L114 5 6nH L107 L112 22nH L115 47nH L111 22nH 5 6nH L108 5 6nH L101 L120 22nH 22nH L116 NA L119 8 25 GSM850_900TX GSM900RX1 5 6 GSM900RX2 17 NC 15 UMTS1 UMTS2 16 ANT GSM1800RX1 1 2 GSM1800RX2 GSM1800_1900TX 22 GSM1900RX1 3 4 GSM1900RX2 7 GSM850R...

Page 95: ...LE SHOOTING LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes G850 900 DCS PCS Rx is OK Fig 4 8 3 3 Check Flow of the GSM RX Block Z 3 X B O X C O M ...

Page 96: ... 97 4 TROUBLE SHOOTING LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes RTR6275 Rx_QP Wave RTR6275 Tx_QP Wave Z 3 X B O X C O M ...

Page 97: ...ig 4 9 2 Schematic of the Bluetooth Block rev 1 0 2 rev 1 0 DUMMY FEED ANT104 ACS2450HFL57 C189 100p C181 0 1u C183 1u 1u C184 1000p C175 1000p C177 20 PGND4 RX_BB_TX_BB 13 SBCK 11 12 SBDT SBST 4 5 SYNC_DET_TX_EN VCC_OUT 3 14 VDD_BAT 2 VDD_INT VDD_MSM 10 XTAL_IN 7 ANT 16 9 CLK_REF 1 GND1 6 GND2 8 GND3 15 GND4 PGND1 17 18 PGND2 PGND3 19 100p M101 LBRQ 2B43A C176 C192 2 2u C173 2 2nH 1 2nH R122 BT_S...

Page 98: ... 99 4 TROUBLE SHOOTING LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes TP3 TCXO_BT Wave TP5 BT_CLK Wave Z 3 X B O X C O M ...

Page 99: ...ll right reserved Only for training and service purposes Start TP1 TP2 Signals exits TP3 Is clock ok 19 2M TP4 Signals exits Change the Main board YES YES YES Change the M101 NO NO Change the X101 NO Change the main board Fig 4 9 3 Check Flow of the Bluetooth Block Z 3 X B O X C O M ...

Page 100: ...one booting and PS_HOLD D401 assert to PMIC LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Start Battery voltage higher than 3 10V VA701 high to low when key press VREG_MSMC_1 2V VREG_MSMP_2 7V VREG_MSME_1 8V VREG_TCXO_2 85V VREG_MSMA_2 6V power up Is clock ok R411 19 2M X401 32 768Khz Change the Main board Change or charging the B...

Page 101: ...raining and service purposes 4 TROUBLE SHOOTING 102 VREG_MSMC VREG_MSME VREG_MSMA VREG_TCXO R406 19 2Mhz X401 32 768Khz CU720 MAIN Bottom near MSM6280IC CU720 MAIN Bottom near PM6650IC VA701 VREG_MSMP PM6650IC MSM6280IC END Rev 1 0 2 EVL14S02200 VA701 ON END PM_ON_SW_N Z 3 X B O X C O M ...

Page 102: ...arging current path Battery Troubleshooting Setup Connect TA and battery to the phone Troubleshooting Procedure Check the charger TA or USB Cable connector Check the charging current Path Check the battery Battery Charging Circuit BASE1 8 BASE2 7 3 COLLECTOR DRAIN 5 1 EMITTER1 EMITTER2 2 6 GATE 9 P_COLLECTOR P_DRAIN 10 SOURCE 4 U401 NUS3116MTR2G 0 1 R406 VPWR ICHARGE ICHARGEOUT VBATT VBATT 5V_PWR ...

Page 103: ...ce purposes 4 TROUBLE SHOOTING 104 Start Check the pin and battery Connect terminals of I O connector Connection OK Change I O connector Is the TA voltage 5 1V Change TA Is it charging properly After turning on U401 END Change the board NO Yes NO Yes NO Yes Charger Troubleshooting Flow Z 3 X B O X C O M ...

Page 104: ...es 4 TROUBLE SHOOTING 105 Charging part MAIN Bottom Charging part schematics R406 U401 BASE1 8 BASE2 7 3 COLLECTOR DRAIN 5 1 EMITTER1 EMITTER2 2 6 GATE 9 P_COLLECTOR P_DRAIN 10 SOURCE 4 U401 NUS3116MTR2G 0 1 R406 VPWR ICHARGE ICHARGEOUT VBATT VBATT 5V_PWR USB_VBUS CHG_CNT_N USB_CNT_N BATT_FET_N Z 3 X B O X C O M ...

Page 105: ...itial sequence of CU720 is USB connected to CU720 power on USB_VBUS U401 go to 5V USB_D go to 3 3V USB_VP and USB_VN is triggered USB work Start U401 2pin is 5V USB_D is 3 3V Change the Main board Check U401 2Pin Check U402 NO YES YES NO Cable is inserted YES Insert cable NO Power is on YES Go to power on trouble shooting NO USB Troubleshooting Flow Z 3 X B O X C O M ...

Page 106: ...MITTER2 2 6 GATE 9 P_COLLECTOR P_DRAIN 10 SOURCE 4 U401 NUS3116MTR2G 0 1 R406 VPWR ICHARGE ICHARGEOUT VBATT VBATT 5V_PWR USB_VBUS CHG_CNT_N USB_CNT_N BATT_FET_N N A rev 1 0 4 Rev 1 0 4 USB_D USB _RADC USB _RINT USB_D N A rev 1 0 4 TP502 D503 C516 1u RB521S 30 4 2B1 2S 2 GND 10 5 VCC FSA2257L10X 1A 7 9 1B0 1B1 6 1S 8 3 2A 2B0 1 U505 TP501 REMOTE_INT EAR_SENSE_N USB _RINT USB_D USB _RADC REMOTE_ADC ...

Page 107: ...108 4 13 USIM Detect Troubleshooting USIM Initial sequence of CU720 is USIM_CLK USIM_RST USIM_DATA triggered VREG_UIM_2 85V go to 2 8V USIM IF work Start Work well VREG_UIM_2 85V is 2 85V USIM_P_CLK is run Change the Main board End Check CN802 Yes No YES NO Re insert the SIM card Change SIM card Work well End Yes No Z 3 X B O X C O M ...

Page 108: ...2 85V 2 USIM_P_RST_N USIM_P_CLK 3 6 USIM_P_DATA USIM rev B Rev 1 1 Rev 1 1 2 RST 1 VCC 5 VPP CN802 KCN 2T 0 0075 3 CLK 4 GND GND1 7 8 GND2 I_O 6 33p C806 15K R807 VA808 EVLC18S02015 C814 NA 0 1u C808 VA807 EVLC18S02015 EVLC18S02015 VA809 VA810 EVLC18S02015 C807 33p USIM_P_DATA VREG_USIM_2 85V USIM_P_CLK USIM_P_RST_N Figure USIM part schemetics Z 3 X B O X C O M ...

Page 109: ...generated by MSM6280 4 14 1 MEGA CAMERA Start 2M_CAM_VDDC_1 5V C802 is 1 5V 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 FB800 CAM_VDDIO_2 8V is 2 8V C802 Change the camera Yes Yes NO NO NO END Yes Change the Main board Change the Main board 2M_CAM_VDDA_2 8V C813 Change the Sub board Yes NO Z 3 X B O X C O M ...

Page 110: ... 111 4 14 2 VGA CAMERA TU720 only Start CAM_DVDD_1 8V is 1 8V C606 CAM_AVDD_2 8V is 2 8V C607 Yes NO END Camera is OK Check the camera connector and reconnect the camera Change the Main board Camera is OK Check the CAM_MCLK Change the camera Yes Yes NO NO NO END Yes FB800 Change the Main board Change the Main board Z 3 X B O X C O M ...

Page 111: ... 8 9 14 15 16 17 18 19 2 20 21 22 23 24 3 4 5 6 G3 G4 1 10 11 12 13 HB 1M1005 601JT FB801 0 1u C801 CAM_VDDIO_2 8V 2M_CAM_VDDC_1 5V 2M_CAM_VDDA_2 8V CAM_MCLK_C CAM_HSYNC_C CAM_VSYNC_C I2C_SDA I2C_SCL C606 C607 REFBP SETF SETM F1 10 9 F2 LDO1 4 5 LDO2 M5 11 M6 EVLC14S02050 VA605 VA603 EVLC14S02050 VA602 EVLC14S02050 1u C606 VA606 EVLC14S02050 EVLC14S02050 VA604 10u C605 C607 1u CAM_VDDIO_2 8V CAM_V...

Page 112: ...go to 2 7V 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 KEY_BL_EN is 2 7 R709 R710 is connected ground Yes Change the KEY FPCB NO VPWR Figure MAIN key backlight LED part Rev 1 0 3 Rev 1 0 3 KEY LED 100ohm R710 LD702 LEWWS44 E R711 4 7K 3 1 PMST3904 Q701 2 LEWWS44 E LD701 RSB6 8CST2R VA714 RSB6 8CST2R VA713 ...

Page 113: ...k Light is on as below Key pressing KYBD_BACKLIGHT go to 0V UP Slide Backlight LED On VPWR Start Change the Main board Check battery NO Yes Yes Key press Change the Main board VPWR is above 3 2V KYBD_BACKLIGHT is 0V Check the LCD FPCB NO YES YES LD900 SSC TWH104 HL SSC TWH104 HL LD901 R904 100ohm 100ohm R903 KYBD_BACKLIGHT VPWR Figure UP Slide backlight LED part Z 3 X B O X C O M ...

Page 114: ...below Folder On Off Event Flip U701 pin OUT is triggered On about 2 7V Off 0V MSM6280 Sense the Folder Event Start Change the Main board Insert the magnet Check the magnet in Slide Assy Approach the magnet to U701 FOLDER_DETECT is 0V Yes NO Yes Change the U701 NO Magnet Hall effect IC Rev C SLIDE DETECT 0 1u VDD VSS 4 VREG_MSMP_2 7V C701 EM 1681 FT U701 NC 3 2 OUT 1 FOLDER_DETECT Z 3 X B O X C O M...

Page 115: ...trol signals are generated by MSM6280 The signal path is MSM6280 CN601 CN701 CN902 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 CN601 CN902 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 Z 3 X B O X C O M ...

Page 116: ...Switch U301 CN601 CN901 Receiver Start The sine wave appears at PIN28 PIN29 CN601 YES Connect the phone to network Equipment and setup call Setup 1KHz tone out NO The sine wave appears at SPK_N SPK_P LCD FPCB Check LCD FPCB Check CN901 YES NO Can you hear the tone Change receiver YES NO END Change the Main board The sine wave appears at R315 R317 Check the analog switch YES NO Z 3 X B O X C O M ...

Page 118: ...0 HPH_R HPH_L C501 C502 Headphone AMP U501 R502 R503 CN501 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 R503 Change the Main board YES NO Check the Headphone Amp Sine wave appears at C501 C502 YES NO Z 3 X B O X C O M ...

Page 119: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 120 R502 R503 U501 Headphone Amp C501 C502 Z 3 X B O X C O M ...

Page 120: ...ect the phone to network equipment and setup call Setup 1KHz tone out Sine wave appears at C314 R318 and C315 R320 Change the Main board NO SPK_AMP_EN R312 is 2 5V Change the Main board NO YES The sine wave appears at SPK_N SPK_P LCD FPCB YES NO Change the speaker YES Change the Main board The sine wave appears at SPK_RCV Change the Main board Check the Analog Switch NO YES The sine wave appears a...

Page 121: ...al Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 122 SPK_RCV U302 Audio Amplifier U302 Analog Switch C314 R318 C315 R320 Z 3 X B O X C O M ...

Page 122: ...ining and service purposes 4 TROUBLE SHOOTING 123 4 21 Main microphone MIC301 C231 MIC1P MSM6280 Start MIC_BIAS C321 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 YES Sine wave appears at C231 Z 3 X B O X C O M ...

Page 123: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 124 C321 MIC_BIAS C231 MIC301 Z 3 X B O X C O M ...

Page 124: ... Headset microphone Headset CN501 PIN2 C229 MIC2P MSM6280 Start EAR_SENSE_N VA504 is 0V Yes END Make a call Change the MAIN board MICBIAS is biased by 1 8V R301 Change the Main board Yes OK NO NO NO Change the headset and retry YES Change MAIN board Sine wave appears at C229 Change the headset or Main board and retry NO Yes Z 3 X B O X C O M ...

Page 125: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 126 VA504 Ear_Sense_N C229 R301 MIC_BIAS Z 3 X B O X C O M ...

Page 126: ...s the motor and Vibrator is operating same time Otherwise MOTOR_PWR is open state Start MOTOR_EN is 2 7V Operate the Vibrator Change the MAIN board or Check the KEY FPCB NO YES Change vibrator MOTOR_PWR is connected ground Change the U602 or Check the LCD FPCB NO YES Rev D Rev D RB521S 30 D603 C608 1u 100nH L601 R611 4 7 R612 1K R610 100K VIN VOUT 3 SUY98005LT1G U602 2 GND 1 VPWR MOTOR_EN MOTOR_PW...

Page 127: ...m the Preferences of the file menu the way you want Click on the File menu and select Preferences Play a success sound This is an experimental feature To enable this simply check the box It will be played a wav file when the download has been completed Automatically run Select Port When LGMDP starts This option is designed to give user convenient When LGMDP starts it will automatically select Sele...

Page 128: ...oses 5 2 1 Connecting to PC Click on the Select Port and then Select Port window will 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 and model name shall be different from that of the port number in the snapshot Z 3 X B O X C O M ...

Page 129: ...e the images are transmitted from PC to the handset a progressive bar Red box indicating the degree of transmission of data is displayed 130 5 DOWNLOAD LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Z 3 X B O X C O M ...

Page 130: ... LG Electronics Inc All right reserved Only for training and service purposes The following slide describes how to use or set options in detail The model name shall be different from that of the model name in the snapshot 1 2 3 6 4 5 7 Z 3 X B O X C O M ...

Page 131: ...set The contents in the handset will be erased Erase_EFS The calibration data user contents media and module are erased Only calibration data is kept when NV backup restore is checked Keep All Contents Maintain user data including WAP AD DRM Email Play lists images When downloading a new images user data stated above are maintained if this option is enable 5 Additional Options Display Information ...

Page 132: ...iles Select the image folder where all the image files are located by clicking on the Browse button The folder name shall be different from that of the folder name in the snapshot The folder name indicates the path where the image files are located if you select the image folder the program will automatically load images accordingly Z 3 X B O X C O M ...

Page 133: ...ght 2007 LG Electronics Inc All right reserved Only for training and service purposes 5 DOWNLOAD 134 if you select the image folder the program will automatically load images accordingly Automatically load images Z 3 X B O X C O M ...

Page 134: ...e the desired NV file to 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 Normally LGMDP will downloaded all files that need downloading To download selected image file only simply select the image file that user want to process downloading Z 3...

Page 135: ...Inc All right reserved Only for training and service purposes 5 DOWNLOAD 136 5 2 3 Downloading The following flow chart is whole process for downloading images to the handset You will see snapshots for each step in the succeeding slides Z 3 X B O X C O M ...

Page 136: ...ms 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 Module image is downloaded Downloading the AMSS modem image 5 2 3 Downloading Z 3 X B O X C O M ...

Page 137: ... 138 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 Erasing the existing directories and files before downloading the selected Media image Downloading Media image in progress Z 3 X B O X C O M ...

Page 138: ... LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Downloading Module image in progress Downloading process has completed successfully Z 3 X B O X C O M ...

Page 139: ...eful for debugging Select Log Extractor from the Tools of the file menu and connect the phone with LGMDP by clicking on the Connect button When clicking on the Connect button this checks if the appropriate files such as LFAPP RecMngr bin err directory Debugging_Tip txt or Hidden_info bin are placed on the handset If they are exist then appropriate check boxes are checked accordingly Select directo...

Page 140: ...eboot the phone as the emergency mode keep pressing 2 and 5 key while the phone is being booted and then try to download the images again The phone supports a special mode named 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 Images don t be running in this mode Z 3 X B O X C...

Page 141: ... 3 2 NV Restore error When you meet the NV Restore error 142 5 DOWNLOAD LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Z 3 X B O X C O M ...

Page 144: ...007 LG Electronics Inc All right reserved Only for training and service purposes Click on NV Restore then several NV Backup files nv2 are shown The files are saved every NV Backup The name is based on the time when NV Backup is done Z 3 X B O X C O M ...

Page 145: ... 146 5 DOWNLOAD LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Select the proper file and click on Restore Z 3 X B O X C O M ...

Page 146: ...E Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes If you want image download and NV backup file restore at once use the NV Default function Z 3 X B O X C O M ...

Page 148: ...oad 3 In emergency mode you can not download the media and module image So if you want download media and module image connect the phone normal mode after emergency mode download and then you can do it 4 The NV data saved at LGMDP folder like this 5 Recommended that the Module and Media Image have to be downloaded at the same time 6 Erase EFS option will erase everything media module nv items and ...

Page 149: ... DIAGRAM 6 BLOCK DIAGRAM LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 6 1 GSM UMTS RF Block Fig 6 1 RF Functional Block Diagram Z 3 X B O X C O M ...

Page 150: ... B7838 FL106 TX GSM850 900 band selector LMSM32AA 533 FL102 FEM FEM Front end Module LMSP4LMA 573TEMP FL101 Bluetooth TRX Bluetooth RF Transceiver LBRQ 2B43A M101 19 2MHz VCTCXO TG 5010LH 19 2MHz X101 Calibration etc Test Connector KMS 518 SW101 Rx UMTS Receiver RFR6275 U107 TX UMTS Dual PAM AWT6321R U106 Bluetooth Bluetooth buffer TC7SH04FS U104 TX GSM TX Dual PAM TQM7M5003 U102 TRX UMTS GSM Tran...

Page 151: ...ernal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 6 2 Interface Diagram 6 2 1 RTR6275 MSM6280 Interface Diagram Fig 6 2 1 RTR6275 MSM6280 Interface Diagram Z 3 X B O X C O M ...

Page 152: ... 6 BLOCK DIAGRAM LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 6 2 2 Memory Interface Fig 6 2 2 Memory Interface Diagram Z 3 X B O X C O M ...

Page 153: ...face USB UART SIM JTAG 154 6 BLOCK DIAGRAM LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Fig 6 2 3 USB UART SIM JTAG Interface Z 3 X B O X C O M ...

Page 154: ...ignal UMTS1900 RX PCS RX RF Signal PCS RX DCS RX RF Signal DCS RX GSM 900 RX RF Signal GSM 900 RX UMTS850 TX RF Signal UMTS850 TX PCS TX RF Signal PCS TX DCS TX RF Signal DCS TX GSM 900 TX RF Signal GSM 900 TX Comment Description Main RF signal UMTS850 1900 GSM850Tx Rx GSM900Tx Rx DCS Tx Rx PCS Tx Rx Ant Switch Module Mode Selection ANT_SEL 0 1 2 3 Power Amp Gain Control GSM_PA_RAMP Power Amp Gain...

Page 155: ...6 2 4 Placement 156 6 BLOCK DIAGRAM LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Fig6 2 4 1 Top Side Z 3 X B O X C O M ...

Page 158: ...TG 5010LH_19_2M_75A 19 2MHz 3 9nH L126 NA C202 3 9nH L134 L127 C194 47p 4 7nH IN 3 O1 4 O2 2 7p L124 B7847 FL107 G1 2 5 G2 1 100p C182 10 R128 C207 0 1u C210 C208 0 1u 33p C171 NA 68p C155 C160 0 068u C200 10u 0 01u C163 C180 4 7p L139 3 9nH 3 9nH L137 1 8p C201 1 8p C195 C131 22p R124 10K 1000p C156 5 6nH L101 C174 1000p 0 01u C157 L129 3 9nH 51 R129 100p C206 120 R120 I2_PCS 6 1 O1_CELL 4 O2_PCS...

Page 159: ...AB1 A19 A20 MDDIH_STBP MDP_VSYNC_PRIMARY_GPIO105 AD2 AE3 MDP_VSYNC_SECONDA_GPIO104 MIC1N AF20 MIC1P AE20 AF21 MIC2N AF22 MIC2P MICBIAS T15 M16 MMC_CLK_SDCC_CLK_GPIO31 MMC_CMD_GPIO30 H14 L14 MMC_DATA_SDCC_DAT0_GPIO32 MODE0 Y23 MODE1 U23 T21 MODE2 T14 NAND2_FLASH_READY_GPIO33 OE1_N L2 LB2_N_A2_0 AE10 LCD_CS_N_GPIO38 AF14 AE13 LCD_EN_GPIO37 LINE_L_IN AC21 AC22 LINE_L_IP AC18 LINE_ON LINE_OP AC17 AC20...

Page 160: ...C119 B4 NC12 NC120 Y11 Y12 NC121 NC122 Y13 Y14 NC123 NC13 B11 B12 NC14 NC15 B13 M12 IO9 NC1 A1 B2 NC10 T13 NC100 NC101 U1 NC102 U3 U14 NC103 NC104 V1 V2 NC105 NC106 V13 V14 NC107 NC108 W1 W2 NC109 NC11 B3 NC110 W3 W4 NC111 DQM3 U9 IO1 M11 L9 IO10 L11 IO11 K9 IO12 IO13 H13 H11 IO14 H9 IO15 G11 IO16 IO2 M13 IO3 L10 IO4 L12 IO5 J9 H12 IO6 H10 IO7 G12 IO8 DQ26 R10 P11 DQ27 R11 DQ28 DQ29 P12 DQ3 V5 DQ3...

Page 161: ...BAT_FET_N 7 VREG_MSMA 56 PS_HOLD 57 TCXO_IN 58 MSM_INT_N 59 VBAT 6 VCOIN 60 REF_ISET 61 REF_GND 62 SBCK 49 ISNS_M 5 VREG_MSMP 50 SBST 51 VDD_MSM 52 TCXO_OUT 53 VDD_ANA 54 TCXO_EN 55 VDD_RUIM 41 VREG_RUIM 42 RUIM_RST MPP6 43 XTAL_IN 44 SLEEP_CLK 45 XTAL_OUT 46 SBDT 47 VBACKUP 48 RUIM_M_CLK MPP9 34 VDD_MSME 35 VREG_MSME 36 VSW_MSME 37 RUIM_CLK MPP10 38 VREG_MMC 39 CHG_CTL_N 4 RUIM_M_RST MPP5 40 VSW_...

Page 162: ... C515 4 2B1 2S 2 GND 10 5 VCC C514 FSA2257L10X 1A 7 9 1B0 1B1 6 1S 8 3 2A 2B0 1 NFM21PC105B1A3 3 G1 4 G2 1 IN 2 OUT U505 U503 C505 2 2u 2 2u C506 100 R502 OJ501 OJ507 EVLC18S02003 1u VA502 C501 NA TP501 R507 47n C504 OJ505 39p C509 100 VA503 EVLC18S02003 R503 12 CTS 10 DSR GND 1 4 NC1 NC2 7 8 NC3 9 NC4 ON_SW 5 RTS 11 2 RX TX 3 6 VBAT C508 UAT501 1u EVLC14S02050 VA507 EVLC14S02050 VA506 470K PSD12 ...

Page 163: ...FL603 EVRC14S03Q030100R FL604 5 G1 10 G2 INOUT_A1 1 INOUT_A2 EVLC18S02015 VA608 RSB6 8CST2R D601 VIN VOUT 3 SUY98005LT1G U602 2 GND 1 10u C605 5 1K R609 C607 1u D602 RSB6 8CST2R EBI2_DATA 4 _F EBI2_DATA 5 _F EBI2_DATA 6 _F EBI2_DATA 7 _F LCD_VSYNC_F LCD_CS_N_F LCD_ADS_F EBI2_WE_N_F LCD_VSYNC LCD_CS_N LCD_ADS EBI2_WE_N VPWR SPK_RCV SPK_RCV KEY_COL 5 KEY_ROW 4 KEY_ROW 3 EBI2_DATA 0 EBI2_DATA 1 EBI2_...

Page 164: ... EM 1681 FT U701 NC 3 2 OUT 1 EVLC14S02050 VA704 EVLC14S02050 VA711 D701 RSB6 8CST2R RSB6 8CST2R VA712 R701 470 R703 100ohm NC 1 STBY VIN 3 4 VOUT VA702 EVLC14S02050 U702 BH28FB1WHFV BGND 6 2 GND 5 2 2K R712 703 701 702 CAM_DATA 3 CAM_DATA 2 CAM_DATA 1 CAM_DATA 0 I2C_SCL I2C_SDA CAM_VSYNC CAM_MCLK CAM_HSYNC M_CAM_RESET_N CAM_PCLK M_CAM_PWDN CAM_VDDIO_2 8V VCOIN UART_RX_IN UART_TX REMOTE_PWR_ON VPW...

Page 165: ...11 FMYML V BGND 11 BYP 4 EN1 2 EN2 3 6 GND 5 NC1 NC2 7 8 NC3 1 VIN VOUT1 10 9 VOUT2 0 1u C801 LD800 LEWWH25LA G1 5 G2 10 INOUT_A1 1 2 INOUT_A2 INOUT_A3 3 4 INOUT_A4 9 INOUT_B1 INOUT_B2 8 7 INOUT_B3 INOUT_B4 6 EVLC14S02050 VA806 FL802 EVRC18S03Q015010R VA805 100K EVLC14S02050 R804 C807 BAT800 ML414RM_F9CL 33p C804 1u EVLC14S02050 VA802 R802 C803 0 1u 100K CAM_VSYNC M_CAM_RESET_N M_CAM_PWDN CAM_PCLK...

Page 166: ...G_LCD_2 8V VREG_LCD_2 8V KEY_ROW 0 KEY_ROW 4 KEY_ROW 3 KEY_ROW 0 KEY_ROW 2 KEY_ROW 1 KEY_ROW 2 KEY_ROW 1 EBI2_DATA 12 EBI2_DATA 11 MAIN_LED3 EBI2_DATA 10 EBI2_DATA 9 EBI2_DATA 8 EBI2_DATA 5 EBI2_DATA 4 EBI2_DATA 1 MAIN_LED2 EBI2_DATA 0 KEY_ROW 4 KEY_ROW 3 MAIN_LED1 MAIN_LED0 EBI2_DATA 7 EBI2_DATA 6 CAM_DATA 4 CAM_DATA 5 CAM_DATA 6 CAM_DATA 7 SPK_RCV SPK_RCV WLED_PWR CAM_MCLK CAM_PCLK I2C_SCL I2C_S...

Page 168: ...A Pin Map 8 BGA Pin Map LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes U303 Memory device PIN map U201 MSM6280 device PIN map Z 3 X B O X C O M ...

Page 170: ...Use Only 9 PCB LAYOUT Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes U702 LCD LDO No Display U601 Charge Pump No LCD Backlight No Flash LED No Camera ANT104 Bluetooth Ant BT connection Z 3 X B O X C O M ...

Page 171: ...No Power On No Service No Charging U102 GSM PAM GSM Tx Power No Service FL102 Tx SAW Filter GSM Tx Power No Service FL101 FEM WCDMA GSM Rx Sensitivity Tx Power No Service FL103 FL104 Duplexer WCDMA Tx Power Rx Sensitivity No Service U303 Memory No Booting U201 MSM6280 BB chipset No Power On No Display No Service U107 RFR6275 WCDMA Rx Sensitivity No Service U101 RTR6275 WCDMA GSM Rx Sensitivity Tx ...

Page 172: ... 173 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGMC 9 PCB LAYOUT BAT800 Backup Battery RTC reset Z 3 X B O X C O M ...

Page 173: ...4 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGMC 9 PCB LAYOUT U800 2M CAM LDO No Camera CN800 2M CAM conn No Camera Z 3 X B O X C O M ...

Page 175: ... 176 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGMC 9 PCB LAYOUT CN802 LCD conn No Display Z 3 X B O X C O M ...

Page 176: ...At_Serial_Cmd xml Diag_NV6250_RevB dll Diag_NV6275 dll Diag_NV6280 dll Diag_NV dll DLL_E5515CD dll Directory File Model LG_CL_015 dll PwrSupply_Cmd xml Auto Cal CalAuto ComLMPLib_2_11 dll Dll_EzLooksMQ_015 dll GuiTk115d dll HK_32 exe ShieldBox_DIID dll CU720 AutoSetup_200 xml Common Cal_Setup_Test xml Ezlooks xml LG_RfCal_Q3G6280Rev_051 dll NstProcedure_CU515_001 xml script_001 xml Spec_FullBand_0...

Page 177: ...l Specification File of RF Test items 4 LG_RfCal_Q3G6280Rev_001 dll RF Calibration DLL File including RF Calibration sequence functions 5 LG_NsTest_E5515C_239 dll Auto RF Test DLL File including RF Test sequence functions 6 DLL_E5515CD DLL GPIB DLL File including measuring functions in E5515CD Test Set LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and...

Page 178: ...on of SETTING menu bar 2 Select UART Port that PC can communicate with the phone 3 Select LOGIC MODE that you want Logic Mode 1 Calibration Only 2 Auto Test Only 3 Calibration Auto LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Z 3 X B O X C O M ...

Page 179: ...ram Hot Kimchi Procedure 4 Select the model name CU720 5 Click Start button LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes CU720 Select CU720 Click Start Z 3 X B O X C O M ...

Page 180: ...42 41 9 40 39 32 28 29 30 31 33 34 35 36 37 38 68 50 51 61 26 62 46 47 48 67 66 64 63 65 15 22 24 25 27 4 11 EXPLODED VIEW REPLACEMENT PART LIST 11 1 EXPLODED VIEW LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Z 3 X B O X C O M ...

Page 181: ...l Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes S R Q P O N M L K J I H G F E D C B A A B F G H I K L G M N O P S Q J C D E R ASS Y EXPLODED VIEW Z 3 X B O X C O M ...

Page 182: ...Color 4 MPBU00 PAD CONNECTOR MPBU0007001 COMPLEX empty Without Color 48 4 MPBZ00 PAD MPBZ0186901 COMPLEX empty Without Color 43 4 MPBZ01 PAD MPBZ0187001 COMPLEX empty Without Color 4 MPFD00 PLATE GROUND MPFD0004101 PRESS BeCu 0 15 Without Color 49 4 MSDC00 SPRING LOCKER diameter 5X1 6 Without Color 52 4 MTAA00 TAPE DECO MTAA0143001 COMPLEX empty Without Color 54 4 MTAD00 TAPE WINDOW MTAD0072201 CO...

Page 183: ... Without Color 5 MFBC00 FILTER SPEAKER MFBC0036501 PRESS STS Without Color 5 MPBG00 PAD LCD MPBG0071201 COMPLEX empty Without Color 5 MPBN00 PAD SPEAKER MPBN0045701 COMPLEX empty Without Color 5 MPBT00 PAD CAMERA MPBT0034001 COMPLEX empty Without Color 8 5 MTAD00 TAPE WINDOW MTAD0060001 COMPLEX empty Without Color 3 4 GMEY00 SCREW MACHINE BIND GMEY0014701 1 4 mm 1 6 mm MSWR3 FN B empty empty empty...

Page 184: ...PE PROTECTION MTAB0135601 COMPLEX empty Without Color 4 MTAB01 TAPE PROTECTION MTAB0183501 COMPLEX empty Without Color 1 A 4 MTAZ00 TAPE MTAZ0204301 COMPLEX empty Without Color 66 4 MWAC00 WINDOW LCD MWAC0083201 CUTTING STS 0 63 Silver 2 B 3 MLAK00 LABEL MODEL MLAK0007203 Silver 68 S 6 MCBA00 CAN SHIELD MCBA0021001 PRESS STS 0 3 Without Color 38 6 MLAB00 LABEL A S MLAB0001102 C2000 USASV DIA 4 0 W...

Page 185: ...6 100 Kohm 1 16W J 1005 R TP 7 R903 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 7 R904 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 7 R905 RES CHIP MAKER ERHZ0000401 0 ohm 1 16W J 1005 R TP 7 SW900 SWITCH TACT ESCY0004901 5 V 0 5 A HORIZONTAL 2 5 G 10C2P empty empty HORIZONTAL empty 7 ZD900 DIODE TVS EDTY0009101 SOD 923 5 V 150 mW R TP 1 0 0 6 0 4 7 ZD901 DIODE TVS EDTY0009101 SOD 923 5 V 150...

Page 186: ...112 CAP CERAMIC CHIP ECCH0000129 120 pF 50V J NP0 TC 1005 R TP 6 C113 CAP CHIP MAKER ECZH0000816 12 pF 50V J NP0 TC 1005 R TP 6 C114 CAP CERAMIC CHIP ECCH0001002 180 pF 50V J NP0 TC 1005 R TP 6 C115 CAP CERAMIC CHIP ECCH0000175 2 7 pF 50V B NP0 TC 1005 R TP 6 C116 CAP CHIP MAKER ECZH0000841 56 pF 50V J NP0 TC 1005 R TP 6 C117 CAP CERAMIC CHIP ECCH0000149 3 3 nF 50V K X7R HD 1005 R TP 6 C118 CAP CE...

Page 187: ... CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C151 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K X7R HD 1005 R TP 6 C152 CAP CHIP MAKER ECZH0000841 56 pF 50V J NP0 TC 1005 R TP 6 C153 CAP CHIP MAKER ECZH0000846 8 2 pF 50V C NP0 TC 1005 R TP 6 C154 CAP CHIP MAKER ECZH0000813 100 pF 50V J NP0 TC 1005 R TP 6 C155 CAP TANTAL CHIP ECTH0001902 10 uF 10V M L_ESR 1608 R TP 6 C156 CAP CERAMIC CHI...

Page 188: ...CFD0000105 2 2 nF 16V J STD SMD 1608 mm R TP 5 empty empty 55TO 125C empty 1 6X0 8X0 7MM R TP 6 C191 CAP CHIP MAKER ECZH0000813 100 pF 50V J NP0 TC 1005 R TP 6 C192 CAP CERAMIC CHIP ECCH0005603 2 2 uF 10V K X5R TC 1608 R TP 6 C193 CAP CERAMIC CHIP ECCH0000187 150 pF 50V J NP0 TC 1005 R TP 6 C194 CAP CERAMIC CHIP ECCH0000122 47 pF 50V J NP0 TC 1005 R TP 6 C195 CAP CERAMIC CHIP ECCH0000183 1 8 pF 50...

Page 189: ... ECCH0000155 10 nF 16V K X7R HD 1005 R TP 6 C238 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K X7R HD 1005 R TP 6 C239 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C240 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C241 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C242 CAP CERAMIC CHIP ECCH0000143 1 nF 50V K X7R HD 1005 R TP 6 C243 CAP CERAMIC CHIP ECCH0000143 1...

Page 190: ... ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C308 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C309 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C310 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C311 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C312 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C313 CAP CHIP MAKER ECZH0003103 0 1...

Page 191: ...CCH0000113 18 pF 50V J NP0 TC 1005 R TP 6 C423 CAP CERAMIC CHIP ECCH0000115 22 pF 50V J NP0 TC 1005 R TP 6 C424 CAP CERAMIC CHIP ECCH0005603 2 2 uF 10V K X5R TC 1608 R TP 6 C425 CAP CERAMIC CHIP ECCH0005603 2 2 uF 10V K X5R TC 1608 R TP 6 C426 CAP CERAMIC CHIP ECCH0006201 4 7 uF 6 3V K X5R TC 1608 R TP 6 C427 CAP CERAMIC CHIP ECCH0006201 4 7 uF 6 3V K X5R TC 1608 R TP 6 C428 CAP CERAMIC CHIP ECCH0...

Page 192: ...D501 DIODE TVS EDTY0008602 SOD 323 13 3 V 400 W R TP PB FREE 6 D502 DIODE TVS EDTY0008601 SOD 323 6 V 400 W R TP PB FREE 6 D601 DIODE TVS EDTY0009401 VMN2 5 V 10 W R TP 1 0 0 6 0 4 7 82V 100mW empty empty 2P 1 6 D602 DIODE TVS EDTY0009401 VMN2 5 V 10 W R TP 1 0 0 6 0 4 7 82V 100mW empty empty 2P 1 6 D603 DIODE SWITCHING EDSY0011901 EMD2 30 V 1 A R TP VF 1 5V IF 200mA IR 30uA VR 10V 6 D701 DIODE TV...

Page 193: ...04 CAP CHIP MAKER ECZH0001002 0 5 pF 50V B NP0 TC 1005 R TP 6 L105 INDUCTOR CHIP ELCH0004705 8 2 nH J 1005 R TP 6 L106 INDUCTOR CHIP ELCH0001036 5 6 nH S 1005 R TP PBFREE 6 L107 INDUCTOR CHIP ELCH0001036 5 6 nH S 1005 R TP PBFREE 6 L108 INDUCTOR CHIP ELCH0001036 5 6 nH S 1005 R TP PBFREE 6 L109 INDUCTOR CHIP ELCH0001041 10 nH S 1005 R TP PBFREE 6 L110 INDUCTOR CHIP ELCH0001420 3 9 nH S 1005 R TP P...

Page 194: ...H0005009 100 nH J 1005 R TP 6 M101 MODULE ETC SMZY0012601 4 5x3 2x1 2 Bluetooth RF Module 6 Q701 TR BJT NPN EQBN0014901 SOT323 2 W R TP NPN SWITCHING TR Pb free 6 R101 RES CHIP ERHY0000101 0 ohm 1 16W F 1005 R TP 6 R102 RES CHIP MAKER ERHZ0000212 12 Kohm 1 16W F 1005 R TP 6 R103 RES CHIP MAKER ERHZ0000310 680 ohm 1 16W F 1005 R TP 6 R104 RES CHIP ERHY0013101 2 7 ohm 1 16W J 1005 R TP 6 R105 RES CH...

Page 195: ...KER ERHZ0000493 51 Kohm 1 16W J 1005 R TP 6 R212 RES CHIP MAKER ERHZ0000441 22 ohm 1 16W J 1005 R TP 6 R214 RES CHIP MAKER ERHZ0000437 2 Kohm 1 16W J 1005 R TP 6 R215 RES CHIP MAKER ERHZ0000405 10 Kohm 1 16W J 1005 R TP 6 R216 RES CHIP MAKER ERHZ0000493 51 Kohm 1 16W J 1005 R TP 6 R301 RES CHIP MAKER ERHZ0000443 2200 ohm 1 16W J 1005 R TP 6 R305 RES CHIP MAKER ERHZ0000405 10 Kohm 1 16W J 1005 R TP...

Page 196: ...005 R TP 6 R703 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R704 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R705 RES CHIP MAKER ERHZ0000405 10 Kohm 1 16W J 1005 R TP 6 R709 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R710 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R711 RES CHIP MAKER ERHZ0000485 4700 ohm 1 16W J 1005 R TP 6 R712 RES CHIP MAKER ERHZ0000443 2200 ohm 1 16W J 100...

Page 197: ...DRIVER INTEGERATED RELAY 6 U701 IC EUSY0250001 Leaded 4 PIN R TP Hall IC 6 VA501 VARISTOR SEVY0001001 14 V SMD 50pF 1005 6 VA502 VARISTOR SEVY0004001 18 V SMD 3pF 1005 6 VA503 VARISTOR SEVY0004001 18 V SMD 3pF 1005 6 VA504 VARISTOR SEVY0001001 14 V SMD 50pF 1005 6 VA505 VARISTOR SEVY0001001 14 V SMD 50pF 1005 6 VA506 VARISTOR SEVY0001001 14 V SMD 50pF 1005 6 VA507 VARISTOR SEVY0001001 14 V SMD 50p...

Page 198: ...ZD601 DIODE TVS EDTY0007501 SOD 523 5 V 240 W R TP Vc 12 5V 160pF 1 6 0 8 06 5 SAFD00 PCB ASSY MAIN SMT TOP SAFD0097201 shine silver 6 ANT104 ANTENNA MOBILE FIXED SNMF0033901 2 0 6 7 dB Internal Bluetooth SMD Pb Free SINGLE 6 C601 CAP CERAMIC CHIP ECCH0007802 4 7 uF 10V M X5R TC 1608 R TP 6 C602 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V K X5R TC 1005 R TP 6 C603 CAP CERAMIC CHIP ECCH0004904 1 uF 6 3V...

Page 199: ...M MGAD0149301 COMPLEX empty Without Color 6 MTAZ00 TAPE MTAZ0204601 COMPLEX empty Without Color 5 MGAD00 GASKET SHIELD FORM MGAD0147401 COMPLEX empty Without Color 39 5 SVCY00 CAMERA SVCY0015901 CMOS MEGA 2M 1 4 SS LSI Sensor 8 Wafer 4 SAJE00 PCB ASSY SUB SMT SAJE0020901 shine silver 5 SAJC00 PCB ASSY SUB SMT BOTTOM SAJC0019801 shine silver 6 C801 CAP CERAMIC CHIP ECCH0000182 0 1 uF 10V K X5R HD 1...

Page 200: ...100 Kohm 1 16W J 1005 R TP 6 R807 RES CHIP MAKER ERHZ0000422 15 Kohm 1 16W J 1005 R TP 6 R808 RES CHIP MAKER ERHZ0000487 470 Kohm 1 16W J 1005 R TP 6 U800 IC EUSY0154407 MLF 10 PIN R TP Dual 1 5V 150mA 2 8V 300mA LDO Regulator PBFREE 6 VA800 VARISTOR SEVY0001001 14 V SMD 50pF 1005 6 VA801 VARISTOR SEVY0001001 14 V SMD 50pF 1005 6 VA802 VARISTOR SEVY0001001 14 V SMD 50pF 1005 6 VA803 VARISTOR SEVY0...

Page 201: ...LIST LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Level Ref No Part Name Part Number Spec Color Remark 5 SPJY00 PCB SUB SPJY0045901 FR 4 0 6 mm BUILD UP 4 Z 3 X B O X C O M ...

Page 202: ...V 0 15 0 2V 700mA 5060 WALL 2P I O CONNECTOR ADAPTOR AC DC SSAD0024402 100 240V 5060 Hz 5 1 V 0 7 A UL CSA AD DC ADAPTOR 85Vac 264Vac 5 1 0 15 0 2V 700mA 5060 WALL 2P I O CONNECTOR ADAPTOR AC DC SSAD0024403 100 240V 5060 Hz 5 1 V 7 A UL CSA AC DC ADAPTOR 85Vac 264Vac 5 1V 0 15V 0 2V 700mA 5060 WALL 2P I O CONNECTOR ADAPTOR AC DC SSAD0024404 100 240V 5060 Hz 5 1 V 7 A UL CSA AC DC ADAPTOR 85Vac 264...

Page 203: ...Note Z 3 X B O X C O M ...

Page 204: ...Note Z 3 X B O X C O M ...

Search results

Summary of Contents for CU720 Black

Reviews:

Related manuals for CU720 Black

Brands by name

Popular brands

LG CU720 Black, Service Manual

Search results

Summary of Contents for CU720 Black

Reviews:

Related manuals for CU720 Black

Brands by name

Popular brands