LG U370 Service Manual Download Page 177

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11. EXPLODED VIEW & REPLACEMENT PART LIST

LGE Internal Use Only

Only for training and service purposes

11.3 Accessory

Level

Location

No.

Part Name

Part Number

Spec

Color

Remark

MCJA00

COVER,BATTERY

MCJA0047001

MOLD, PC LUPOY SC-1004A, , , , ,

Black

69,T

MTAB00

TAPE,PROTECTION

MTAB0190901

COMPLEX, (empty), , , , ,

Without Color

SBPL00

BATTERY PACK,LI-ION

SBPL0086301

3.7 V,850 mAh,1 CELL,PRISMATIC ,ABCD PJT (AX275)
Batt, IP, Whitout ID Chip, Pb-Free ,; ,3.7 ,850 ,0.2C
,PRISMATIC ,46x34x46 , ,ALLTEL SILVER ,Innerpack
,America Label

SGEY00

EAR PHONE/EAR MIKE
SET

SGEY0003210

; ,10mW ,16 OHM ,105dB ,10KHZ ,450HZ ,[empty]
,BLACK,EARPHONE HOUSING:SILVER ,18P MMI
CONNECTOR ,LOW COST STEREO,18P(5P)

SSAD00

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 ,

ADAPTOR,AC-DC

SSAD0024502

100-240V ,5060 Hz,5.1 V,0.7 A,CE ,AC-DC ADAPTOR ,;
,5.1V +0.15V, -0.2V ,5.1V ,700mA ,5060 , ,WALL 2P ,I/O
CONNECTOR ,

ADAPTOR,AC-DC

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 ,

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 ,

APAY00

PACKAGE

APAY0103101

U370 HIT Packing(P/Label66-Angle-9501)

Without Color

Note:

This Chapter is used for reference, Part order

is ordered by SBOM standard on GCSC

Summary of Contents for U370

Page 1: ...Date January 2008 Issue 1 0 Service Manual Model U370 Service Manual U370 ...

Page 2: ...th Block 85 4 8 Power ON Troubleshooting 87 4 9 Charger Troubleshooting 90 4 10 USB Troubleshooting 92 4 11 SIM Detect Troubleshooting 93 4 12 Camera Troubleshooting 96 4 13 LCD module Troubleshooting 99 4 14 Receiver Path 101 4 15 Headset path 103 4 16 Speaker phone path 105 4 17 Main microphone 107 4 18 Headset microphone 109 5 DOWNLOAD 111 5 1 Introduction 111 5 2 Downloading Procedure 111 5 3 ...

Page 4: ...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 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 dis...

Page 5: ...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 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 boar...

Page 6: ...ttery Power 3 7 V normal 850 mAh Li Ion Talk Time Over 140 min WCDMA Tx 12 dBm Voice with 850mAh Over 140 min GSM Max Tx Power Voice Standby Time Over 180 Hrs WCDMA DRX 1 28 with 850mAh Over 250 Hrs GSM Paging period 9 Antenna Internal type LCD Main 1 76 TFT QCIF 262K SUB 1 96 Mono STN LCD Backlight White LED Back Light Camera 1 3 Mega pixel Vibrator Yes Coin Type LED Indicator No MIC Yes Receiver...

Page 7: ...Typ 3 2 V Min Shut Down 3 2 V Operation Temp 20 60 C Storage Temp 20 70 C Humidity 85 Max Reference Spec Min Typ Max Unit TA Power Available power 100 220 240 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 62...

Page 8: ... MHz 53dBm 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 25...

Page 9: ...t should 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 ...

Page 10: ...p 10 equel 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 be...

Page 11: ...smit 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 No Item GSM DCS PCS 1 Sensitivity TCH FS Class II 105dBm 105dBm 2 Co Channel Rejection C Ic 7dB Storage 30 85 TCH FS Class II RBER TU high FH 3 Adjacent Channel 200kHz C Ia1 12dB C Ia1 12dB Rejecti...

Page 12: ...Blocking UE 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 Inte...

Page 13: ...Test Condition Bluetooth off LCD backlight off Neighbor Cell off VT Test Condition Speaker off LCD backlight On 2 5 RSSI BAR Stand by Voice Call VT WCDMA Under 4 5 mA Under 350 mA Under 600mA DRX 1 28 Tx 12dBm Tx 12dBm Under 3 3 mA Under 350 mA GSM Paging 9 period Max Tx Power Level Change WCDMA GSM BAR 4 3 88 2 dBm 90 2 dBm BAR 3 2 98 2 dBm 95 2 dBm BAR 2 1 108 2 dBm 100 2 dBm BAR 1 0 118 2 dBm 1...

Page 14: ... service purposes 2 6 Battery BAR 2 PERFORMANCE 15 Indication Standby Bar 4 Over 3 80 0 05V Bar 4 3 3 80 0 05V Bar 3 2 3 71 0 05V Bar 2 1 3 64 0 05V Bar 1 Empty 3 57 0 05V Low Voltage 3 57 0 05V Stand by 3 57 0 05V Talk Warning message Blinking Interval 3min Stand by 1min Talk Power Off 3 20 0 05V ...

Page 15: ...ess Rating SLR 8 3 dB 2 Receiving Loudness Rating RLR Nor 4 3 dB Max 15 3 dB 3 Side Tone Masking Rating STMR Min 17 dB 4 Echo Loss EL Min 46 dB 5 Idle Noise Sending INS Max 64 dBm0p 6 Idle Noise Receiving INR Nor Under 57 dBPA Max Under 54 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 25 dB 10 Echo Loss EL Min 40...

Page 16: ... receivers 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 signal to RF 1 QUALCOMM s branded chipset that implements a Zero IF radio architecture 3 TECHNI...

Page 17: ...ectly 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 transmit paths employ one stage of up conversion and in order to improve efficiency 1 The on chip quadrature up converter translates the GMSK modulated signal to a constant envelope phase signal at RF 2 The amplitude modulated AM co...

Page 18: ...ting bands and modes to share the same antenna In U370 a common antenna connects to one of six paths 1 UMTS 2100 Rx Tx 2 GSM 900 Rx 3 GSM 900 Tx 4 DCS 1800 Rx and 5 DCS 1800 Tx 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 signals T...

Page 19: ...ed in the switch module The 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 The RTR6275 input stages in...

Page 21: ...and symmetry about the band center frequency the suggested starting value is shown in Figure1 2 The RTR6275 IC is able to support GSM 900 and GSM 1800 1900 mode transmitting This design guideline shows a tri 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 in...

Page 22: ... the MSM device These analog input signals are amplified filtered and applied to the quadrature upconverter mixers The up converter output is amplified by multiple variable gain stages that provide transmit AGC control The AGC output is filtered and applied to the driver amplifier this output stage includes an integrated matching inductor that simplifies the external matching network to a single s...

Page 23: ...Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 3 TECHNICAL BRIEF 24 Figure 1 4 RTR6275 IC functional block diagram WCDMA_2100_TX WCDMA_2100_RX ...

Page 24: ...s 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 fractional N PLL synthesizers the RTR6275 has the advantages of more flexible loop bandwidth contro...

Page 25: ...power the VCTCXO and is enabled before most other regulated outputs Any GSM mode power control circuits within the MSM6245 IC require a reference voltage for proper operation and sufficient accuracy Connecting the PM6650 IC REF_OUT directly to the MSM6245 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...

Page 26: ...urrent 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 All regulators can be individually enabled disabled for power savings Low power mode available on MSMA and MSMP regulators All regulated outputs are derived from a common bandgap reference close tracking Integrated handset level housekeeping functions ...

Page 27: ...quences Supports and orchestrates soft resets USB OTG transceiver for full speed 12 Mb s and low speed 1 5 Mb s interfacing of the MSM device to computers as a USB peripheral or connecting the MSM device to other peripherals RUIM level translators enable MSM device interfacing with external modules Twelve multi purpose pins that can be configured as digital or analog I Os bidirectional I Os or cur...

Page 29: ...ie one supports the GSM850 900 bands 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 TECHNICAL BRIEF 30 Figure 1 8 GSM PAM Schematic 8 5dB 13dB MODE GSM LOW GSM_PA...

Page 30: ...um duplexer Rx band isolation value is about 51 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 inband to desensitize the receiver The required Tx band isolation depends on the PA channel power and Tx ba...

Page 31: ...t 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 rejection of t...

Page 32: ...CHNICAL BRIEF 33 3 5 Bluetooth M1 LBRQ 2B43A The MSM6245 includes BT baseband embedded BT 1 1 compliant baseband core so the other bluetooth components are an bluetooth RF module and Antenna Figure1 5 shows the bluetooth system architecture in the KU370 Figure1 5 Bluetooth system architecture MSM6245 Bluetooth baseband ...

Page 33: ...fps QCIF viewfinder resolution and support for 2 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 SIM lock and IMEI integrity Support for Q fuse Only trusted boot is supported Audio that is on par with portable music players Vocode...

Page 34: ...lexer RTR6275 WCDMA PAM MSM6245 WCDMA TX SAW WCDMA RX SAW PM6650 2M GSM PAM GSM TX SAW COUPLER VCTCXO Bluetooth RF Module U SIM 1 3M CAM USB MIC SPK RCV KEYPAD NAND SDRAM FLASH MAIN LCD GSM900 Rx GSM1800 Rx GSM1900 Rx GSM900 Tx GSM1800 1900 Tx AntSW Logic WCDMA2100 Tx WCDMA2100 Rx GSM VCO WCDMA VCO HDET GSM Block WCDMA Block Figure Simplified Block Diagram ...

Page 35: ...e GRAPHICS VIDEO AUDIO DUAL MEMORY BUS Modem QDSP 4000 PLL QDSP 4000 ARM 926ejs With Jazelle UMTS WCDMA 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 1 3M I O Conn NAND Flash 1Gbit SDRAM 512Mbit LCD 2 inch PM6650 GSM GPRS EDGE processor JTAG RF SBI GPIO USIM USB Figure Simplified...

Page 36: ... W CDMA FDD standard including the following features All modes and data rates for W CDMA frequency division duplex FDD with 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 dive...

Page 37: ...x Transparent and non transparent modes for CS data and fax No sub rates are supported 3 7 4 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 3 7 5 EDGE features EDGE E2 power class for 8 PSK DTM simple Class A multi slot class 12 Downlink coding ...

Page 38: ... S embedded microprocessor subsystem 16 kB instruction and 16 kB data cache Instruction set compatible with ARM7TDMI ARM version 5TEJ instructions Higher performance 5 stage pipeline Harvard cached architecture Higher internal CPU clock rate with on chip cache Java hardware acceleration Enhanced memory support 75 MHz and 90 MHz bus clock for SDRAM 32 bit SDRAM Dual memory buses separating the high...

Page 39: ...nnectivity Integrated USB host controller functionality Enable compelling visual and audio applications QcameraTM High quality digital camera processing supporting CCD or CMOS image sensors up to 2MP 30 fps QCIF viewfinder QtvTM Audio and video decoder that supports VOD MOD and Broadcast multimedia services Audio codecs supported AMR NB AMR WB AMR WB AAC AAC Plus Enhanced AAC Plus Windows Media Au...

Page 40: ...eous 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 MFi 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 Al...

Page 42: ...seal echo canceller ESEC Acoustic Echo Canceller AEC Noise Suppression NS and programmable 13 tap Type I FIR Tx Rx compensation filters The MSM6245 device s integrated ARM9TDMI processor downloads the firmware into the QDSP4000 and configures QDSP4000 to support the desired functionality 3 7 12 ARM Microprocessor subsystem The MSM6245 device uses an embedded ARM926EJ S microprocessor This micropro...

Page 43: ...ace additional 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 15 UART The MSM6245 device employs three UARTs UART1 has dedicated pins while UART2 and UART3 share multiplexed pins 3 7 16 USB The MSM6245 device integrates a universal serial bus USB controller that supports both unidirectio...

Page 44: ... 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 trimmed voltage reference A dedicated contr...

Page 46: ...ry to 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 e...

Page 47: ...urce that supplies current from VDD to pin VBAT Trickle charging can be used for lithium ion and nickelbased batteries with its performance specified below 3 2V The charging current is set to 80mA 48 3 TECHNICAL BRIEF 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 ...

Page 48: ... 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 850mAh Charger Voltage 5 1V Charging time Max 3h Except time t...

Page 49: ...ices which can support up to 32MBytes on each chip select Synchronous burst memories supported burst NOR 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 Support fo...

Page 50: ...c All right reserved Only for training and service purposes Figure Simplified Block Diagram of Memory Interface MSM6245 SDRAM 512Mb NAND 1Gb 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 15 0 EBI1 EBI2 ...

Page 51: ...16 RTCK H18 SBST1_GPIO93 F17 PA_ON0 Q_IM_CH0 AA25 W23 Q_IM_CH1 Q_IP_CH0 Y25 V23 Q_IP_CH1 Q_OUT B12 A13 I_OUT_N I_IM_CH0 AB25 I_IM_CH1 V25 I_IP_CH0 AC25 I_IP_CH1 W25 B13 I_OUT GP_PDM1_PA_RAN_GE0 H17 GP_PDM2_PA_RAN_GE1 D17 GRFC0_GPIO3 B8 GRFC1_AUX_SBDT_GPIO4 A8 GRFC2_GPIO5 D9 GRFC3_GPIO6 F10 H10 GRFC4_AUX_SBCK_GPIO7 GRFC5_AUX_SBST_GPIO8 D11 T23 GRFC7_GPIO10 GRFC8_GPIO11 B4 T19 GRFX6_GPIO9 DAC_REF F1...

Page 52: ... service purposes B the others TRK_LO_ADJ TCXO 19 2M Control PA_ON WCDMA 2100 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 ...

Page 53: ...2 2 UART Interface UART signals are connected to MSM GPIO through IO connector with 115200 bps speed LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes MSM6245 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 ...

Page 54: ...5 Mbps and full speed 12 Mbps both of which are supported by the MSM6245 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 MSM6245 Side PM6650 Side N23 USB_SE0_VM L23 UART3_CTS_N_GPIO86 UART3_DP_RX_DATA_GPIO85 M21 M1...

Page 55: ...s which are multiplexed to the input of the internal HKADC LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Figure MSM6245 HKADC Block diagram Table HKADC channel table PCB Version Check PCB_Rev_ADC HKADC4 ADC Reference voltage REF_ADC HKADC2 Ear jack Detection for TTY TTY_ADC_DET HKADC3 Battery Temperature Check Battery voltage leve...

Page 56: ...2 3 LEFT UP ROW 2 4 5 6 OK RIGHT ROW 3 7 8 9 SEND SEARCH ROW 4 0 DOWN BACK KEY_ROW 0 HOT4 2 6 5 1 4 3 7 0 KEY MAP 9 8 HOT3 CLR END SEARCH VA430 EVL14K02200 OK VA427 EVL14K02200 EVL14K02200 VA426 VA425 EVL14K02200 DN 404 400 409 401 EVL14K02200 VA413 RA400 2 4 6 8 1 3 5 7 RIGHT 100K BACK SND HOT400 HOT401 UP EVL14K02200 VA431 406 HOT402 403 LEFT 100K R427 402 VA432 EVL14K02200 405 408 EVL14K02200 V...

Page 57: ...rposes Figure END Keypad Circuit END EVL14K02200 VA413 PM_ON_SW_N Figure Camera Socket Type Connector 4 5 6 7 8 9 11 12 13 14 15 16 17 18 19 2 20 21 22 23 24 3 CN103 G1 G2 G3 G4 1 10 R1 47K VREG_CAM_DVDD_2 8V I2C_SCL CAM_PCLK CAM_RESET_N CAM_DATA 7 CAM_DATA 6 CAM_DATA 5 CAM_DATA 4 CAM_DATA 3 CAM_DATA 2 CAM_DATA 1 CAM_DATA 0 VREG_CAM_DVDD_1 8V VREG_CAM_DVDD_2 8V VREG_CAM_AVDD_2 8V CAM_MCLK CAM_HSYN...

Page 58: ...lled by I2C port from MSM6245 Table Interface between Camera Module and MAIN FPCB in camera module Pixel Clock 48M O CAM_PCLK 20 Vertical Sync O CAM_VSYNC 19 Horizontal Sync CAM_HSYNC 18 GND GND GND 17 DOVDD GND 15 AVDD I DOVDD_2 8V 16 GND GND GND 21 Data O CAM_DATA_OUT 5 3 Data O CAM_DATA_OUT 6 4 Data O CAM_DATA_OUT 7 5 GND 6 MCLK 7 GND 8 Camera reset signal CAM_RESET_N 9 I2C_SDA 10 I AVDD_2 8V 1...

Page 59: ...ch are arranged in vertical stripes Sub LCD has a 0 98 inch diagonally measured active display area with 96 mono X64 resolution Features Display mode Main LCD Normally White Transmissive TFT 265K colors Sub LCD Normally Black Transmissive Mono STN 16 bit CPU interface Parallel KYBD_BACKLIGHT VPWR REV_B EDLH0013501 EDLH0006001 KEY_BACK_LIGHT LED 10EA LEBB S14H LD402 100ohm R418 100ohm R423 R420 100...

Page 60: ...5 26 27 28 29 3 30 31 32 33 34 35 36 37 38 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 CN102 AXK8L40125G G1 G2 1 EBI2_DATA 2 EBI2_DATA 3 SPK_RCV SPK_RCV LCD_VSYNC EBI2_DATA 4 EBI2_DATA 5 EBI2_DATA 6 EBI2_DATA 7 WLED_PWR WLED_1 WLED_2 WLED_3 EBI2_WE_N EBI2_DATA 8 EBI2_DATA 9 EBI2_DATA 10 EBI2_DATA 11 LCD_CS_N EBI2_DATA 12 EBI2_DATA 13 EBI2_DATA 14 EBI2_DATA 15 VREG_MSMP_2 7V LCD_ADS LCD_IF_MODE LCD...

Page 61: ... MSM6245 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_P LINE_N are differential outputs Earphone2 HPH_L HPH_R is a single ended output stage designed to drive a headset speaker The microphone interface consists of two differential microphone inputs o...

Page 62: ...01 AF20 MIC1N AE20 MIC1P MIC2N AF21 AF22 MIC2P T15 MICBIAS AC21 LINE_L_IN LINE_L_IP AC22 LINE_ON AC18 AC17 LINE_OP LINE_R_IN AC20 AC19 LINE_R_IP W17 HPH_L HPH_R AA17 HPH_VREF AA19 AE18 EAR1ON AF18 EAR1OP AA20 CCOMP AUXIN AF19 AUXIP AE19 AA18 AUXOUT 47p C201 R437 10 0 1u C212 C211 0 1u RCV HPH_R HPH_L RCV MIC2N MIC1N MIC1P MIC2P LINE_N LINE_P MICBIAS VBATT R402 51K HB 1M1005 600JT FB2 C404 33u R405...

Page 63: ... COM2 9 GND 6 4 IN1 8 IN2 NC1 5 7 NC2 2 NO1 10 NO2 VCC 1 5 G3 1 OUT PWR 4 MIC400 SP0204LE5 PB G1 2 3 G2 C407 0 1u C402 47p 0 1u C409 10u C400 VPWR MIC1P MIC1N MICBIAS SPK_RCV SPK_RCV RCV RCV SPK SPK RCV_EN_N Audio AMP C408 10u 0 01u C406 33K R410 IN D1 B1 NC B4 VDD1 C4 VDD2 D4 VO VO A4 _SD A1 U403 TPA2005D1ZQYR GND1 A2 A3 GND2 GND3 B3 C2 GND4 GND5 C3 D2 GND6 GND7 D3 IN C1 0 01u C405 R408 33K C412 ...

Page 64: ... Description Voice Call Receiver Mode Receiver Voice Call Loud Mode Speaker Phone Headset Headset Voice Call Speaker phone Loud Mode Speaker Phone MIDI Loud Mode Speaker MIDI Bell Headset Headset MIDI Bell MP3 Loud Mode Speaker MP3 Headset Headset MP3 Component Design No Maker Part No Note 1 MSM6245 U201 MSM6245 Base Band Modem 2 Audio amp U403 TPA2005D1ZQYR Audio Amp 3 Analog Switch U401 NLAS5223...

Page 65: ...K TFT 20 SUB Mono STN 0 98 Camera 1 3Mega 1810 speaker receiver Stereo Headset Speaker phone in GSM and WCDMA MP3 AAC decoder and play MPEG4 encoder decoder and play save JPEG en decoder Supports Bluetooth USB 850 mAh Li Ion LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes ...

Page 66: ...0 Main Component LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Main board Bottom Main board Top Power RF Base Band Sub board Bottom Sub board Top Bluetooth Audio ...

Page 67: ...7 LG Electronics Inc All right reserved Only for training and service purposes U101 SW100 FL102 U102 U100 U104 Reference Description Reference Description U101 RTR6275 SW100 Ant Switch Module FL102 W2100 Duplexer U104 WCDMA PAM U100 Front End Module U102 GSM PAM ...

Page 68: ...g and service purposes U301 U201 U300 U304 X100 U401 U403 U303 U302 Reference Description Reference Description U201 MSM6245 Mobile Station Modem U304 NU3116 Charging IC U300 PM6650 Power Management IC U401 Analog Switch for Audio U301 Memory U403 Audio Amplifier U302 LDO for Camera X100 19 2 Mhz TCXO U303 Dual LDO for Camera ...

Page 69: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes MIC400 Reference Description Reference Description J300 USIM Connector ANT1 BlueTooth Antenna MIC400 Microphone M1 BlueTooth Module S1 T Flash Socket ANT1 M1 S1 ...

Page 70: ... 71 4 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 MAIN_BOTTOM TOP SIDE ...

Page 73: ... PATH_UMTS RF 74 4 TROUBLE SHOOTING LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Common Tx Rx UMTX 2100 UMTX 2100 Tx UMTX 2100 Rx Tx I Q RX I Q ...

Page 74: ...E SHOOTING LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 3 SIGNAL PATH_GSM RF Common GSM900 Tx PCS Rx Tx I Q RX I Q DCS PCS Tx EGSM900 RX DCS RX ...

Page 75: ...sed in UMTS TX part GSM part and BB part Schematic of the VC TCXO Block TCXO R123 100ohm 0 01u C175 0 1uF C169 C172 100p 4 VCC 5 TC7SH04FU U105 GND 3 2 0 01u C171 1000p C170 1000p C173 NC1 5 6 NC2 NC3 7 8 NC4 3 OUTPUT 4 VCC 1 VCONT DSA321SCE 19 2M X100 19 2MHz GND 2 R124 100K C174 1000p TRK_LO_ADJ VREG_TCXO_2 85V TCXO_BT VREG_BT_2 85V TCXO_PM RTR6275_TCXO TP3 TP1 TP2 X100 Test Point of the VC TCXO...

Page 76: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 77 Check R213 of MSM U200 Check C312 of PMIC U300 T T ...

Page 77: ...X1 5 6 GSM900_RX2 16 GSM900_TX VDD 19 WCDMA2100 9 18 CTRL2 22 7 GND1 GND10 23 GND2 8 GND3 10 GND4 12 GND5 13 15 GND6 17 GND7 GND8 20 GND9 21 14 GSM18001900_TX GSM1800_RX1 1 GSM1800_RX2 2 GSM1900_RX1 3 4 D5011 ANT 11 CTRL1 C123 15p NA C122 47p C111 ANT_SEL0 ANT_SEL1 VREG_RF_SMPS TP1 TP2 TP3 U100 FL102 Schematic of the Front End Module Block Test Point of the Front End Module Block TP1 TP2 TP3 ...

Page 79: ...0nH L102 ANT102 C101 1 2p WCDMA 20dB 7dB U103 CP0402A1950DNTR 50OHM 4 3 COUP 2 IN 1 OUT 2 4 5 3 1 KRX102U TR100 2 7nH L114 L115 5 6nH 130 R121 NA L118 C164 3 3nH FL102 ACMD 7602 ANT 3 PGND 4 1 RX TX 2 NA C160 100p C167 3 3p C162 R119 51 0 01u C158 L116 2 2p 1u C435 33p C155 47 R120 0 01u C159 C156 4 7u R122 130 C165 10nH 3 GND2 6 7 GND3 9 GND4 RFIN 2 RFOUT 8 1 VCC1 VCC2 10 4 VCONT 5 VREF WS2512_TR...

Page 81: ...Block PAM control signal 1 PWR_DET UMTS Tx Power Detected value Check R120 2 TX_AGC_ADJ UMTS RTR6275 Tx Amp Gain Control 3 VREG_TCXO_2 85V UMTS PAM enable C170 about 2 85V 4 VPWR UMTS PAM Main Voltage 3V VPWR 4 2V 5 PA_ON Turns the PA on and off 6 PA_R0 Control signals that step the active PA mode and bias PWR_DET PA_R0 VPWR VREG_TCXO_2 85V PA_ON U101 U104 U100 TR100 ...

Page 82: ...M1800_RX1 1 GSM1800_RX2 2 GSM1900_RX1 3 4 D5011 ANT 11 CTRL1 C123 15p NA C122 47p C111 VREG_RF_SMPS WCDMA 20dB 7dB U103 CP0402A1950DNTR 50OHM 4 3 COUP 2 IN 1 OUT 2 4 5 3 1 KRX102U TR100 2 7nH L114 L115 5 6nH 130 R121 NA L118 C164 3 3nH FL102 ACMD 7602 ANT 3 PGND 4 1 RX TX 2 NA C160 2 G1 3 G2 5 G3 1 IN 4 O1 FL101 EFCH1950TDF1 10p C168 100p C167 3 3p C162 R119 51 L122 1 8nH 0 01u C158 L116 2 2p 1u C...

Page 84: ...e Bluetooth Block Schematic of the Bluetooth Block BLUETOOTH C14 C10 1u 0 1uF 10 VDD_MSM 7 XTAL_IN 1 8p L1 GND1 1 GND2 6 GND3 8 GND4 15 PGND1 17 PGND2 18 19 PGND3 PGND4 20 13 RX_BB_TX_BB 11 SBCK SBDT 12 4 SBST SYNC_DET_TX_EN 5 VCC_OUT 3 14 VDD_BAT 2 VDD_INT LBRQ 2B43A M1 16 ANT CLK_REF 9 2 2u C6 2 2u C12 C13 100p 1000p C3 0 R2 1000p C11 C4 100p FEED NC1 NC2 ANT1 BT_CLK BT_SBCK BT_SBDT BT_SBST VREG...

Page 85: ...t 2007 LG Electronics Inc All right reserved Only for training and service purposes Start TP1 TP2 2 85 V 2 7 V exist TP3 Is clock ok 19 2MHz TP4 Signals exits Change the Main board Change the M1 NO YES YES YES NO Cha Change the Main board nge the X100 NO ...

Page 86: ...7V VREG_MSMA_2 6V VREG_TCXO_2 85V power up and system reset assert to MSM6245 Phone booting and PS_HOLD assert to PMIC Start Battery Voltage is higher than 3 2 V YES NO Insert Well Charged Battery or Charging the Battery Change the Main board Press PWR_ON key YES Check Belows MSMC_1 2V MSMP_2 7V MSME_1 8V MEMA_2 6V VREG_TCXO_2 85V YES Check TCXO Sleep Clock R306 TCXO_MSM 19 2 Mhz TP311 32 768 Khz ...

Page 87: ...e Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 88 VREG_MSMP VREG_MSMA VREG_MSME VREG_MSMC X300 32 768Khz R306 19 2Mhz MSM6245 U370 Main PCB BOTTOM ...

Page 89: ...ery Troubleshooting Setup Connect TA and battery to the phone Check Point Connection of TA or USB Cable Charging current path Battery Troubleshooting Procedure Check the charger TA or USB Cable connector Check the charging current Path Check the battery Battery Charging Circuit 1 EMITTER1 EMITTER2 2 6 GATE 9 P_COLLECTOR P_DRAIN 10 SOURCE 4 NUS3116MTR2G U304 BASE1 8 BASE2 7 3 COLLECTOR DRAIN 5 0 1 ...

Page 90: ...rposes Start Check the 5V_PWR Pin of I O Connector and Battery contact terminals Connection is OK YES NO Change I O Connector Change the Main board Check TA or USB Cable Voltage 5 1V YES Is it charging properly after turnning on U304 NO NO Change TA or USB Cable YES END Charger Troubleshooting Flow Charging part Main PCB U304 R315 ...

Page 91: ...Start Power on was OK YES NO Go to Power on Trouble shooting Change the Main board Insert the USB Cable and Check Voltage of USB_VBUS pin of U304 is 5V YES Voltage of USB_D is 3 3V YES NO Check I O Connector NO Check PM6650 LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 92 ...

Page 92: ...G 93 4 11 SIM Detect Troubleshooting USIM Initial sequence of U370 is USIM_CLK USIM_RST USIM_DATA triggered VREG_UIM_2 85V go to 2 8V USIM IF work Start Re insert the SIM Card Work Well NO YES END Change the Main board Check VREG_USIM_2 85V USIM_P_CLK is run YES Work well NO NO Check J300 USIM Connector YES END Change the SIM card ...

Page 93: ... USIM_P_RST_N USIM_P_CLK 3 7 USIM_P_DATA 1 2 3 7 6 5 USIM EVLC18S02003 VA302 VA300 EVLC18S02003 C351 33p smd_1005h_5_r C352 smd_1005h_5_r 0 1u RST 2 RSV1 4 RSV2 8 VCC 1 6 VPP HSSC 8P 18 J300 3 CLK GND1 5 9 GND2 GND3 10 12 GND4 GND5 11 7 IO 56nH L303 VA301 EVL14K02200 15K R314 USIM_P_DATA USIM_P_RST_N VREG_USIM_2 85V USIM_P_CLK Figure USIM part schematics ...

Page 94: ...LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 4 TROUBLE SHOOTING 95 USIM_P_CLK Waveform After Boot up Enlarger Waveform of USIM_P_CLK ...

Page 95: ...bleshooting Camera control signals are generated by MSM6245 4 12 1 MEGA CAMERA Start Check kthe camera connector and Reconnect the Camera CN103 Camera is OK NO YES END Change the Main board Check CAM_AVDD_2 8V CAM_DVDD_2 8 1 8 V YES Check the CAM_MCLK YES Camera is OK NO NO Change the Main Board NO Change the Main Board YES END Change the Camera Module ...

Page 96: ...3 Main FPCB CAM_PCLK CAM_DATA_OUT 5 3 CAM_DATA_OUT 6 4 CAM_DATA_OUT 7 5 GND 6 7 8 CAM_RESET_N 9 10 CAM_PWR_DN 12 11 CAM_DATA_OUT 4 2 CAM_DATA_OUT 3 1 Name No CAM_DATA_OUT 0 CAM_DATA_OUT 1 CAM_DATA_OUT 2 CAM_HSYNC GND I2C_SDA I2C_SCL GND DVDD_1 8V DOVDD_2 8V AVDD_2 8V GND MCLK 13 14 15 16 17 18 19 20 21 22 23 24 CAM_VSYNC GND No Name Camera Pin Map CAM_PCLK 48 Mhz ...

Page 97: ... C347 REV_C 10uF Cap Delete REV_B Dual LDO IC Change MG FM CAMERA LDO 2 EN1 3 EN2 5 GND NC1 4 NC2 6 9 PGND VIN 1 8 VOUT1 VOUT2 7 RT9011 FMPQW U303 C348 1u C345 1u 1u C346 1u 1u C347 C430 6 CE GND1 2 GND2 5 NC 4 1 VDD VOUT 3 U302 R1114D281D TR F VPWR CAM_LDO_EN VREG_CAM_DVDD_1 5V VREG_CAM_AVDD_2 8V VREG_CAM_DVDD_2 8V VPWR CAM_LDO_EN C345 U302 U303 U346 U347 ...

Page 98: ...CD module Troubleshooting Main LCD control signals are generated by MSM6245 The signal path is MSM6245 CN102 LCD Module Start Press END Key KEY LED turns on YES NO Go to Power on Trouble Shooting Change the Main board LCD Display is OK NO LCD Display is OK NO YES Change the Main Board YES END Change the LCD Module Reconnect the LCD Connector ...

Page 99: ...2 33 34 35 36 37 38 10 11 12 13 14 15 16 17 18 19 2 20 21 22 23 CN102 AXK8L40125G G1 G2 1 EBI2_DATA 2 EBI2_DATA 3 SPK_RCV SPK_RCV LCD_VSYNC EBI2_DATA 4 EBI2_DATA 5 EBI2_DATA 6 EBI2_DATA 7 WLED_PWR WLED_1 WLED_2 WLED_3 EBI2_WE_N EBI2_DATA 8 EBI2_DATA 9 EBI2_DATA 10 EBI2_DATA 11 LCD_CS_N EBI2_DATA 12 EBI2_DATA 13 EBI2_DATA 14 EBI2_DATA 15 VREG_MSMP_2 7V LCD_ADS LCD_IF_MODE LCD_MAKER_ID EBI2_OE_N LCD...

Page 100: ...Receiver Path MSM6245 EAR1ON EAR1OP R436 R437 Analog Switch U401 Receiver Start Connect the phone to network Equipment and setup call Setup 1KHz tone out NO The sine wave appears at PIN17 PIN19 of CN403 NO Can you hear the tone Change receiver YES END Change the Main board Check the analog switch The sine wave appears at R436 R437 NO YES YES ...

Page 102: ...ses 4 TROUBLE SHOOTING 103 4 15 Headset path MSM6245 HPH_R HPH_L C402 C401 R407 R406 CN401 MMI Connector Start Connect the phone to network Equipment and setup call Setup 1KHz tone out and insert headset Can you hear the tone NO Change Headset YES END Change the Main board Sine wave appears at R405 R406 NO YES ...

Page 104: ... and insert headset Can you hear the tone NO YES END Change the Main board Sine wave appears at C405 C406 and R408 R410 YES SPK_AMP_EN is 2 6V YES Pulse signal appears at SPK SPK YES Pulse signal appears at SPK_RCV SPK_RCV NO NO Change the Main Board NO Change the Main Board NO Change audio amp U401 YES Change Speaker U370 use Class D Amplifier So The Output Signal of Amplifier was seen Rectangula...

Page 106: ...and service purposes 4 TROUBLE SHOOTING 107 4 17 Main microphone MIC400 C407 C409 MIC1P MIC1N MSM6245 Start MIC_BIAS C400 is 1 8V Change the Main board Wave appears at C407 C406 NO Change the MIC END Make a Call Make Sound to MIC NO Change the Main Board Wave appears at C407 C406 YES NO YES YES ...

Page 108: ...9 4 18 Headset microphone Headset C210 C211 MIC2P MIC2N MSM6245 Analog Switch U401 Speaker Start Make a Call with Equipment Check the Headset or Connector YES Hook_KEY is detected YES Check the Voltage of MICBIAS whether 1 8 V YES Sine wave appears at C210 C211 YES NO Change the Main Board NO Change the Main Board NO Change the Headset ...

Page 110: ...alled 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 wav file when...

Page 111: ... and service purposes 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 shall be different from that of the port number in the snapshot ...

Page 112: ...All right reserved Only for training and service purposes 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 transmission of data is displayed ...

Page 113: ... default image path select Browse button The edit box shows the file path where images are located Please note that all images should be located in a selected folder 2 Click on the Browse button to select image files to be downloaded on the handset 3 NV Backup Restore NV Backup Restore always have to be done and it is default selected option Backup the NV data and restore the backed up NV data aut...

Page 114: ...er contents media and module are erased Only calibration data is kept when NV backup restore is checked The user contents and file system physically are wiped out Keep All Contents Maintain user data including WAP AD DRM E mail Play lists and images when downloading a new S W images User data stated above are maintained if this option is selected 5 Additional Options Display Information is default...

Page 115: ...d service purposes 5 DOWNLOAD 116 5 2 2 Choosing image files Select the image folder where all the image files are located by clicking on the Browse 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 ...

Page 116: ...oad images accordingly 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 have chosen correct file In case of wrong AMSS Modem file is selected the phone may not work The file name shall be different from that of t...

Page 117: ...service purposes 5 DOWNLOAD 118 If NV restore is failed then the NV Data nv2 is erased permanently In this case choose 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 ...

Page 118: ...ses 5 DOWNLOAD 119 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 continue downloading selected image file with options ...

Page 119: ...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 Module image is downloaded Downloading the AMSS modem image 5 2 3 Downloading ...

Page 120: ...121 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 Rebooting the handset and re establishing the connection Erasing the existing directories and files before downloading the selected Media image ...

Page 121: ...007 LG Electronics Inc All right reserved Only for training and service purposes 5 DOWNLOAD 122 Downloading Module image in progress Downloading Module image in progress Rebooting handset Downloading process has completed successfully ...

Page 122: ...erved Only for training and service purposes 5 2 4 Tools Device Manager allows to monitor current hardware that is installed on your PC Device Manager is designed to monitor USB connectivity and check where the COM has been installed Select Device Manager from the Tools of the file menu ...

Page 123: ...en 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 images can not be running in this mode The below dialog shows parameters of S...

Page 124: ...e 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 125: ... Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes 5 3 2 NV Restore Error Snapshot showing the NV Restore error Next slide shows the remedial procedure to adopt ...

Page 126: ...007 LG Electronics Inc All right reserved Only for training and service purposes 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 127: ...Click on Browse Select the LGMDP installation directory and a list of NV Backup files nv2 will be shown These nv files were saved every time NV Backup option was selected and the name of the nv file is determined based on the time when NV Backup was done Choose the desired NV file to be downloaded on the handset and click on Start ...

Page 128: ... 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 at the same time 5 Erase EFS option will erase everything media module nv items and user data in the EFS area D LGMDP 004400 01 429926 _COM14_ LGMDP folder name IMEI num...

Page 129: ...K DIAGRAM 130 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 2 1 KU370 RF Functional Block Diagram ...

Page 130: ...PAM TX U105 TC7SH04FU Bluetooth buffer Bluetooth U103 CP0402A1950DNTR UMTS2100 coupler TX U104 WS2512 UMTS2100 PAM TX SW100 MM8430 2600RB3 Test Connector Calibration etc X100 DSA321SCE 19 2M VCTCXO 19 2MHz M1 LBRQ 2B43A Bluetooth RF Transceiver Bluetooth TRX U100 D5011 FEM Front end Module FEM FL100 EFCH897MTDB1 GSM900 TX SAW Filter TX FL101 EFCH1950TDF1 UMTS2100 TX SAW filter TX FL103 EFCH2140TDE...

Page 131: ... I F MAI N L CD VGA CAMERA GSM900 R x GSM1800 Rx GSM1900 Rx GSM900 Tx GSM1800 1900 T x AntSW Logi c W CDMA2100 T x W CDMA2100 R x GSM VCO WC DMA VCO HDET GSM Bl ock WCDM A Bl ock Front End Module Dupl exer RTR6275 WC DMA PAM MSM6245 WC DMA TX SA W WC DMA RX SAW PM6650 2M GSM PAM GSM TX SAW COUPLER VCTCXO Bl uetooth RF Modul e 1 3M CAMERA USB MIC SPK RCV KEYPAD NAND SDR AM FLASH SD I F MAI N L CD V...

Page 132: ... 133 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 2 3 Memory Interface Diagram ...

Page 133: ... 2 3 USB UART SIM JTAG Interface 134 6 BLOCK DIAGRAM LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes Fig 2 4 USB UART SIM JTAG Interface ...

Page 134: ... UMTS2100 TX RF Signal GSM 900 RX GSM 900 RX RF Signal DCS RX DCS RX RF Signal PCS RX PCS RX RF Signal UMTS2100 RX UMTS2100 RX RF Signal TX_I Q I Q for Tx of RF RX_I Q I Q for Rx of RF Control signal Description Comment UMTS PA_CTL signal PA_R0 UMTS Tx High Low Power Control GSM PA_CTL signal GSM_PA_BAND DCS or PCS GSM Mode Selection GSM_PA_EN Power Amp Gain Control Enable GSM_PA_RAMP Power Amp Ga...

Page 138: ...4 O1 51 R113 4 VCC 5 EFCH897MTDB1 FL100 TC7SH04FU U105 GND 3 2 33p C155 8 2p 68p C108 C115 680 R103 C120 68p 0 01u C141 C114 180p 47 R120 0 01u C171 22u C129 C127 0 01u L101 0 01u C159 NA ANT103 1000p GND1 3 GND2 4 5 GND3 6 GND4 IN 1 2 OUT C170 VDDA9 VDDM 17 VTUNE1 5 18 VTUNE2 26 WLNA_IN 29 WLNA_OUT 35 WMIX_INN WMIX_INP 34 SW100 MM8430 2600RB3 TX_QN TX_QP 53 VCONTROL 56 4 VDDA1 VDDA10 41 VDDA11 45...

Page 139: ..._DATP B20 A19 MDDIH_STBN MDDIH_STBP A20 AD2 MDP_VSYNC_PRIMARY_GPIO105 MDP_VSYNC_SECONDA_GPIO104 AE3 AF20 MIC1N AE20 MIC1P MIC2N AF21 AF22 MIC2P T15 MICBIAS MMC_CLK_SDCC_CLK_GPIO31 M16 A13 I_OUT_N KEYSENSE0_N_GPIO62 R21 P19 KEYSENSE1_N_GPIO63 D14 KEYSENSE2_N_GPIO46 R23 KEYSENSE3_N_GPIO47 KEYSENSE4_N_GPIO48 U21 L2 LB1_N_SDRAM1_DQM0 AE10 LB2_N_A2_0 AF14 LCD_CS_N_GPIO38 LCD_EN_GPIO37 AE13 AC21 LINE_L_...

Page 140: ... DQ1 T4 TY9000A800KOGG40 U301 A0 C3 A1 D3 E4 A10 A11 D9 A12 C9 C345 1u 1u R318 100K C346 C305 0 1u GND_SLUG 85 PON_RESET_N 9 C306 0 1u SPKR_IN_M 78 SPKR_OUT_M 79 FLSH_DRV_N 8 REF_OUT MPP8 80 VREG_SYNT 81 AMUX_OUT 82 VDD_MAIN 83 VREG_TCXO 84 AMUX_IN1 MPP1 70 VDD_RF 71 AMUX_IN2 MPP2 72 VREG_RFTX 73 SPKR_BYP 74 SPKR_OUT_P 75 SPKR_IN_P 76 VDD_SPKR 77 REF_BYP 63 VREG_WLAN 64 VDD_WLAN 65 CBL1PWR_N MPP4 ...

Page 141: ...GND2 GND3 B3 C2 GND4 GND5 C3 D2 GND6 GND7 D3 IN C1 EVLC18S02015 VA440 EVL14K02200 EVLC14S02050 VA433 VA406 33u C403 SD12T1G D400 0 01u 0 01u C405 C420 EVL14K02200 VA431 C419 47n 406 HOT402 LD407 R408 33K LEBB S14H 100ohm 680K R415 R422 5 G3 1 OUT PWR 4 R425 100ohm MIC400 SP0204LE5 PB G1 2 3 G2 D401 RB521S 30 ICVE10184E070R100FR 5 G1 10 G2 1 INOUT_A1 INOUT_A2 2 INOUT_A3 3 INOUT_A4 4 INOUT_B1 9 8 IN...

Page 142: ...4K02200 EVL14K02200 VA7 2 2u VA6 EVL14K02200 C6 EVL14K02200 VA5 C9 0 1uF 2 2u C12 C13 100p 1000p R6 470K C3 DAT0_DO DAT1_RSV DAT2_RSV GND GND VDD VSS SCHA1A0102 S1 CD_DAT3_CS CLK_SCLK CMD_DI EVLC18S02003 R4 100K VA3 0 KEY0 1 2 3 4 5 R2 1000p C11 C4 100p FEED NC1 NC2 EVLC18S02003 VA4 KEY_COL 5 VREG_MMC_3 0V VREG_MSMP_2 7V VREG_BT_2 85V KEY_ROW 0 KEY_ROW 1 KEY_ROW 2 KEY_COL 5 ANT1 MMC_CD MMC_CLK MMC...

Page 143: ...MAKER_ID LCD_ADS LCD_CS_N MOTOR_PWR VPWR VREG_CAM_DVDD_2 8V LCD_RESET_N I2C_SDA I2C_SCL CAM_PCLK CAM_RESET_N CAM_HSYNC CAM_VSYNC EBI2_DATA 7 EBI2_DATA 6 EBI2_DATA 5 EBI2_DATA 4 I2C_SCL EBI2_DATA 8 EBI2_DATA 9 EBI2_DATA 10 EBI2_DATA 11 LCD_IF_MODE EBI2_OE_N EBI2_WE_N CAM_DATA 3 CAM_DATA 2 CAM_DATA 1 CAM_DATA 0 CAM_DATA 7 CAM_DATA 6 CAM_DATA 5 CAM_DATA 4 LCD_VSYNC EBI2_DATA 2 EBI2_DATA 3 SPK_RCV SPK...

Page 144: ...C PIN MAP 8 BGA IC PIN MAP LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes U201 MSM6245 EUSY0318401 Unused Used Bottom view U201 MSM6245 EUSY0318401 ...

Page 149: ...s 9 PCB LAYOUT Not Display No Voice Sound Not work Camera Not work Vibrator Unable to boot mobile Unable to boot mobile No registration fail to attach network weak Rx sensitivity weak Tx Power even max power No operate Bluetooth function No read write MicroSD card Unable to boot mobile mismatch the RTC Real time Clock ...

Page 154: ...10 Calibration RF Auto Test Program Hot Kimchi 10 1 Configuration of HOT KIMCHI 10 1 1 Configuration of directory Cm_Grut Debug Common dll_serialat Log LG_CL_009 dll Auto Cal CalAuto Directory File C At_Serial_Cmd xml Diag_NV6250_RevB dll Diag_NV dll Diag_NV6275 dll DLL_E5515CD DLL DLL_PwrControlD dll LG_CL_011 dll Dll_SerialATD dll PwrSupply_Cmd xml U370 U370 U370 ...

Page 155: ...ses Hot_Kimchi Model Debug U370 Directory File image Log Log AutoSetup_110 xml Cal_Setup_Test xml Ezlooks xml LG_RfCal_Q3G6280N_Polar_006 dll Procedure_U370_103 xml script_auto_001 xml script_cal_003 xml Spec_3GPP_030 xml LG_RfTest_E5515C_211 dll ComLMPLib_11 dll Dll_EzLooksMQ_004 dll GuiTk115d dll HK_25 exe ijl11 dll SBCmd xml ShieldBox_DllD dll QMSL_MSVC6R dll ...

Page 156: ...Result UI Auto image Directory File Cal CalAuto result bmp LG_UI_Ad6500_002 dll U370 U370 U370 LG_UI_EmU370_001 dll LG_UI_Qu6250_003 dll LG_UI_Qu6275_004 dll dll ocx MFCO42D DLL MSVCP60D DLL Win98 MFCD DLL COPY bat Win2000 MFCD DLL COPY bat WinXP MFCD DLL COPY bat MFC42D DLL MFCD42D DLL MFCN42D DLL Vsflex7L ocx vsflex7l_ocx_regist bat MSVCRTD DLL 1 _New_HK_0808 reg ...

Page 157: ...c Operation 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 ...

Page 158: ...o Test Program Hot Kimchi Procedure 4 Select the model name U370 5 Click Start button LGE Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes U370 Select U370 Click Start ...

Page 160: ... training and service purposes 1 18 19 20 21 22 23 24 25 26 30 31 32 33 34 37 38 39 40 41 42 43 44 46 45 36 59 58 57 35 54 61 62 56 55 69 68 67 66 49 48 47 27 70 53 29 28 50 51 52 60 63 64 65 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 11 EXPLODED VIEW REPLACEMENT PART LIST 11 1 EXPLODED VIEW ...

Page 161: ... Internal Use Only Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes T S R Q P O N M L K J I H G F E D C B A A B C D E F G H I J K L M N O P Q R S T ASS Y EXPLODED VIEW ...

Page 162: ... PAD LCD MPBG0064801 COMPLEX empty Without Color 18 5 MTAA00 TAPE DECO MTAA0143201 COMPLEX empty Without Color 28 5 MTAD00 TAPE WINDOW MTAD0072501 COMPLEX empty Without Color 26 5 MTAF00 TAPE MOTOR MTAF0013301 COMPLEX empty Without Color 24 5 MTAK00 TAPE CAMERA MTAK0002601 COMPLEX empty Without Color 23 4 ACGJ00 COVER ASSY FOLDER UPPER ACGJ0065201 Black A 5 MCJJ00 COVER FOLDER UPPER MCJJ0049101 MO...

Page 163: ...or 31 F 4 MCCH01 CAP SCREW MCCH0109901 MOLD PC LUPOY SC 1004A Black 35 H 5 MTAZ00 TAPE MTAZ0198301 COMPLEX empty Without Color 4 MCCH02 CAP SCREW MCCH0111501 COMPLEX empty Black 32 G 4 MHFD00 HINGE FOLDER MHFD0013001 COMPLEX empty Without Color 34 D 4 MKAG00 KEYPAD MAIN MKAG0001201 COMPLEX empty Black 36 K 4 MLAZ00 LABEL MLAZ0038303 PRINTING empty White 4 MPBF00 PAD FLEXIBLE PCB MPBF0026301 COMPLE...

Page 164: ... SJMY0008401 3 V 80 mA 10 2 7 17mm 4 SUSY00 SPEAKER SUSY0026801 ASSY 8 ohm 88 dB mm wire 15mm 18 10 3T WIRE 17 4 SVCY00 CAMERA SVCY0015001 CMOS MEGA 1 3M SS LSI 1 5 7x12x4 1t HPCB 14 4 SVLM00 LCD MODULE SVLM0025601 MAIN M_176 220 S_96 64 Mono 38 5 51 8 3 2 262k TFT TM S6B0724 16 3 ACGM00 COVER ASSY REAR ACGM0095001 Black N 4 ENZY00 CONNECTOR ETC ENZY0019901 3 PIN 3 mm STRAIGHT 4 MCJN00 COVER REAR ...

Page 165: ...RAMIC CHIP ECCH0000122 47 pF 50V J NP0 TC 1005 R TP 6 C123 CAP CERAMIC CHIP ECCH0000112 15 pF 50V J NP0 TC 1005 R TP 6 C124 CAP CERAMIC CHIP ECCH0000115 22 pF 50V J NP0 TC 1005 R TP 6 C125 CAP CHIP MAKER ECZH0000803 2 pF 50V C NP0 TC 1005 R TP 6 C126 CAP TANTAL CHIP ECTH0005501 33 uF 10V M L_ESR 2012 R TP empty empty 55TO 125C empty empty empty empty 6 C127 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K...

Page 166: ...TP 6 C163 INDUCTOR CHIP ELCH0004720 1 2 nH S 1005 R TP 6 C164 INDUCTOR CHIP ELCH0004709 3 3 nH S 1005 R TP 6 C165 INDUCTOR CHIP ELCH0001048 10 nH J 1005 R TP PBFREE 6 C166 INDUCTOR CHIP ELCH0004720 1 2 nH S 1005 R TP 6 C167 CAP CHIP MAKER ECZH0000813 100 pF 50V J NP0 TC 1005 R TP 6 C168 CAP CERAMIC CHIP ECCH0000110 10 pF 50V D NP0 TC 1005 R TP 6 C169 CAP CHIP MAKER ECZH0004402 0 1 uF 16V Z NP0 TC ...

Page 167: ...30 CAP CHIP MAKER ECZH0004402 0 1 uF 16V Z NP0 TC 1005 R TP 6 C231 CAP CERAMIC CHIP ECCH0000147 2 2 nF 50V K X7R HD 1005 R TP 6 C232 CAP CERAMIC CHIP ECCH0000143 1 nF 50V K X7R HD 1005 R TP 6 C233 CAP CERAMIC CHIP ECCH0000143 1 nF 50V K X7R HD 1005 R TP 6 C234 CAP CERAMIC CHIP ECCH0000143 1 nF 50V K X7R HD 1005 R TP 6 C235 CAP CERAMIC CHIP ECCH0000143 1 nF 50V K X7R HD 1005 R TP 6 C236 CAP CERAMIC...

Page 168: ...KER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C323 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C324 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C325 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C326 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C327 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C328 CAP CERAMIC CHIP ECCH000620...

Page 169: ...P 6 C405 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K X7R HD 1005 R TP 6 C406 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K X7R HD 1005 R TP 6 C407 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C408 CAP TANTAL CHIP ECTH0001902 10 uF 10V M L_ESR 1608 R TP 6 C409 CAP CHIP MAKER ECZH0003103 0 1 uF 10V K X7R HD 1005 R TP 6 C412 CAP CHIP MAKER ECZH0001215 1 uF 10V K X5R TC 1005 R TP 6 C416 CAP CERA...

Page 170: ...ilter 10 Ohm 7 5pF 6 FL403 FILTER EMI POWER SFEY0011701 SMD SMD 18 V 4ch EMI_ESD Filter 10 Ohm 7 5pF 6 FL404 FILTER EMI POWER SFEY0011701 SMD SMD 18 V 4ch EMI_ESD Filter 10 Ohm 7 5pF 6 FL405 FILTER EMI POWER SFEY0011701 SMD SMD 18 V 4ch EMI_ESD Filter 10 Ohm 7 5pF 6 FL408 FILTER EMI POWER SFEY0011701 SMD SMD 18 V 4ch EMI_ESD Filter 10 Ohm 7 5pF 6 J300 CONN SOCKET ENSY0019201 8 PIN ETC 8Pin 2 54 mm...

Page 171: ...S CHIP MAKER ERHZ0000483 47 ohm 1 16W J 1005 R TP 6 R121 RES CHIP MAKER ERHZ0000415 130 ohm 1 16W J 1005 R TP 6 R122 RES CHIP MAKER ERHZ0000415 130 ohm 1 16W J 1005 R TP 6 R123 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R124 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R201 RES CHIP MAKER ERHZ0000222 150 Kohm 1 16W F 1005 R TP 6 R203 RES CHIP MAKER ERHZ0000204 100 Kohm 1 16W F 100...

Page 172: ... 6 R427 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R436 RES CHIP MAKER ERHZ0000441 22 ohm 1 16W J 1005 R TP 6 R437 RES CHIP MAKER ERHZ0000441 22 ohm 1 16W J 1005 R TP 6 R440 RES CHIP MAKER ERHZ0000443 2200 ohm 1 16W J 1005 R TP 6 RA400 RES ARRAY R ERNR0000404 100 Kohm 100 Kohm 8 PIN J 1 16W SMD R TP 6 SW100 CONN RF SWITCH ENWY0001801 STRAIGHT SMD 2 dB 3000PCS REEL 6 TR100 TR BJT ARRAY...

Page 173: ... 6 VA411 VARISTOR SEVY0000702 14 V 10 SMD 6 VA412 VARISTOR SEVY0000702 14 V 10 SMD 6 VA433 VARISTOR SEVY0001001 14 V SMD 50pF 1005 6 VA434 VARISTOR SEVY0001001 14 V SMD 50pF 1005 6 VA440 VARISTOR SEVY0003801 18 V SMD 6 X100 VCTCXO EXSK0005703 19 2 MHz 1 5 PPM 40 pF SMD 3 2 2 5 0 9 1 5PPM 2 8V 3 2 2 5 0 9 SMD P TP 6 X300 X TAL EXXY0016601 32 768 KHz 20 PPM 9 pF 65 Kohm SMD 4 9 1 8 0 9 5 SAFD00 PCB ...

Page 174: ...14 V 10 SMD 6 VA424 VARISTOR SEVY0000702 14 V 10 SMD 6 VA425 VARISTOR SEVY0000702 14 V 10 SMD 6 VA426 VARISTOR SEVY0000702 14 V 10 SMD 6 VA427 VARISTOR SEVY0000702 14 V 10 SMD 6 VA428 VARISTOR SEVY0000702 14 V 10 SMD 6 VA429 VARISTOR SEVY0000702 14 V 10 SMD 6 VA430 VARISTOR SEVY0000702 14 V 10 SMD 6 VA431 VARISTOR SEVY0000702 14 V 10 SMD 6 VA432 VARISTOR SEVY0000702 14 V 10 SMD 5 WSYY00 SOFTWARE W...

Page 175: ... 10V K X5R HD 1005 R TP 6 C9 CAP CHIP MAKER ECZH0004402 0 1 uF 16V Z NP0 TC 1005 R TP 6 L1 CAP CERAMIC CHIP ECCH0000183 1 8 pF 50V C NP0 TC 1005 R TP 6 M1 MODULE ETC SMZY0012601 4 5x3 2x1 2 Bluetooth RF Module 6 R10 RES CHIP ERHY0003301 100 ohm 1 16W J 1005 R TP 6 R2 RES CHIP ERHY0000101 0 ohm 1 16W F 1005 R TP 6 R4 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP 6 R5 RES CHIP MAKER ERHZ0000...

Page 176: ... Electronics Inc All right reserved Only for training and service purposes 11 EXPLODED VIEW REPLACEMENT PART LIST 177 Level Location No Part Name Part Number Spec Color Remark 5 SPJY00 PCB SUB SPJY0046201 FR 4 0 8 mm BUILD UP 4 U370 SUB PCB ...

Page 177: ...3210 10mW 16 OHM 105dB 10KHZ 450HZ empty BLACK EARPHONE HOUSING SILVER 18P MMI CONNECTOR LOW COST STEREO 18P 5P 3 SSAD00 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 ADAPTOR AC DC SSAD0024502 100 240V 5060 Hz 5 1 V 0 7 A CE AC DC ADAPTOR 5 1V 0 15V 0 2V 5 1V 700mA 5060 WALL 2P I O CONNECTOR ADAPTOR AC DC 100 240...

Page 178: ...Note ...

Page 179: ...Note ...

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Summary of Contents for U370

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LG U370, Service Manual, Page: 177 / 179

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Summary of Contents for U370

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