LG VX8350 Service Manual Download Page 153

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C436

CAP,CERAMIC,CHIP

ECCH0000143

1 nF,50V,K,X7R,HD,1005,R/TP

MCH155CN102KK

C437

CAP,CERAMIC,CHIP

ECCH0000143

1 nF,50V,K,X7R,HD,1005,R/TP

MCH155CN102KK

C438

CAP,CHIP,MAKER

ECZH0003202

1 uF,6.3V ,Z ,Y5V ,HD ,1005 ,R/TP

GRM36Y5V105Z6.3PT

C439

CAP,CHIP,MAKER

ECZH0001511

2.2 uF,10V ,Z ,Y5V ,HD ,1608 ,R/TP

C1608Y5V1A225ZT

C441

CAP,CERAMIC,CHIP

ECCH0000182

0.1 uF,10V ,K ,X5R ,HD ,1005 ,R/TP

GRM36X5R104K10PT

C442

CAP,CERAMIC,CHIP

ECCH0005602

2.2 uF,16V ,K ,X5R ,HD ,1608 ,R/TP

GRM39X5R225K16

C443

CAP,CERAMIC,CHIP

ECCH0005602

2.2 uF,16V ,K ,X5R ,HD ,1608 ,R/TP

GRM39X5R225K16

C444

CAP,CHIP,MAKER

ECZH0001215

1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP

C1005X5R1A105KT

C445

CAP,CERAMIC,CHIP

ECCH0005604

10 uF,6.3V ,M ,X5R ,TC ,1608 ,R/TP

GRM188R60J106ME47D

C446

CAP,CHIP,MAKER

ECZH0001215

1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP

C1005X5R1A105KT

C447

CAP,CHIP,MAKER

ECZH0001215

1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP

C1005X5R1A105KT

C448

CAP,CHIP,MAKER

ECZH0000830

33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP

C1005C0G1H330JT

C449

CAP,CHIP,MAKER

ECZH0000830

33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP

C1005C0G1H330JT

C450

CAP,CHIP,MAKER

ECZH0000830

33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP

C1005C0G1H330JT

C451

CAP,CHIP,MAKER

ECZH0000830

33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP

C1005C0G1H330JT

C504

CAP,CHIP,MAKER

ECZH0000830

33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP

C1005C0G1H330JT

C505

CAP,CHIP,MAKER

ECZH0000830

33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP

C1005C0G1H330JT

C610

CAP,CHIP,MAKER

ECZH0001215

1 uF,10V ,K ,X5R ,TC ,1005 ,R/TP

C1005X5R1A105KT

C611

CAP,TANTAL,CHIP

ECTH0005103

33 uF,10V ,M ,L_ESR ,3216 ,R/TP

TCSHS1A336MAAR

C612

CAP,CERAMIC,CHIP

ECCH0000122

47 pF,50V,J,NP0,TC,1005,R/TP

MCH155A470JK

C619

CAP,CHIP,MAKER

ECZH0000830

33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP

C1005C0G1H330JT

C620

CAP,CHIP,MAKER

ECZH0000830

33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP

C1005C0G1H330JT

C621

CAP,CHIP,MAKER

ECZH0000830

33 pF,50V ,J ,NP0 ,TC ,1005 ,R/TP

C1005C0G1H330JT

CON300

CONN,SOCKET

ENSY0014701

8 PIN,ETC , ,1.1 mm,H=1.95, Reverse

49225-0821

CON301

CONN,JACK/PLUG,
EARPHONE

ENJE0006101

3 ,4 PIN, ,; ,[empty] ,[empty] ,STRAIGHT ,P/TR , ,[empty] ,

KJA-PH-0-0140

CON601

CONNECTOR,I/O

ENRY0006401

18 PIN,0.4 mm,ANGLE , ,H=2.5, Reverse Type

HSEJ-18S04-25R

D600

DIODE,SWITCHING

EDSY0017701

SOD-123 ,40 V,1 A,R/TP , ,; , , , , , , ,[empty] ,[empty] ,2P ,1

SDB1040

D601

DIODE,TVS

EDTY0008602

SOD-323 ,13.3 V,400 W,R/TP ,PB-FREE

PSD12-LF

DP100

DUPLEXER,DCN

SDDY0004101

836.5 MHz,881.5 MHz,2.0 dB,2.7 dB,49 dB,61 dB,
3.0*2.5*1.25 ,SMD ,

B7637

DP101

DUPLEXER,PCS

SDPY0002902

1880 MHz,1960 MHz,3.8 dB,3.5 dB,43 dB,52 dB,
3.8*3.8*1.4 ,SMD ,FBAR

ACMD-7402-TR1G

F100

FILTER,SAW

SFSY0018301

1575.42 MHz,2.0*1.4*0.78 ,SMD ,

B7840

F101

FILTER,SAW

SFSY0018201

881.5 MHz,2.0*1.4*0.78 ,SMD ,

B7838

F102

FILTER,SAW

SFSY0024901

1960 MHz,2.0*1.4*0.68 ,SMD ,5pin, Unbal-Bal,
50/100, B7834 Low Loss ver.

B7847

F103

FILTER,SAW

SFSY0020101

1880 MHz,2.0*1.6*0.8 ,SMD ,

B9014

F104

FILTER,SAW

SFSY0018101

836.5 MHz,2.0*1.6*0.68 ,SMD ,

B9003

F105

FILTER,SEPERATOR,
SP3T

SFAD0000502

859 MHz,70 MHz,0.8 dB,20 dB,20 dB,42 dB,15 dB,
1575.42 MHz,2 MHz,1.8 dB,42 dB,42 dB,12 dB,12 dB,1920
MHz,140 MHz,0.85 dB,15 dB,20 dB,20 dB,42 dB,SMD ,ETC
,3.2*3.2, D1034 mirror type, LTCC

D1043

L100

INDUCTOR,CHIP

ELCH0004710

15 nH,J ,1005 ,R/TP ,

1005GC2T15NJ00

L101

INDUCTOR,CHIP

ELCH0004727

100 nH,J ,1005 ,R/TP ,

1005GC2TR10J00

L102

INDUCTOR,CHIP

ELCH0004722

47 nH,J ,1005 ,R/TP ,

1005GC2T47NJ00

L104

INDUCTOR,CHIP

ELCH0004715

27 nH,J ,1005 ,R/TP ,

1005GC2T27NJ00

L106

INDUCTOR,CHIP

ELCH0004705

8.2 nH,J ,1005 ,R/TP ,

1005GC2T8N2J00

L107

INDUCTOR,CHIP

ELCH0004704

4.7 nH,S ,1005 ,R/TP ,

1005GC2T4N7S00

L109

INDUCTOR,CHIP

ELCH0004704

4.7 nH,S ,1005 ,R/TP ,

1005GC2T4N7S00

L111

INDUCTOR,CHIP

ELCH0004713

6.8 nH,J ,1005 ,R/TP ,

1005GC2T6N8J00

L114

INDUCTOR,CHIP

ELCH0004712

3.9 nH,S ,1005 ,R/TP ,

1005GC2T3N9S00

L115

INDUCTOR,CHIP

ELCH0004712

3.9 nH,S ,1005 ,R/TP ,

1005GC2T3N9S00

L116

INDUCTOR,CHIP

ELCH0004721

2.2 nH,S ,1005 ,R/TP ,

1005GC2T2N2S00

L117

INDUCTOR,CHIP

ELCH0004706

10 nH,J ,1005 ,R/TP ,

1005GC2T10NJ00

L118

INDUCTOR,CHIP

ELCH0004717

82 nH,J ,1005 ,R/TP ,

1005GC2T82NJ00

L119

INDUCTOR,CHIP

ELCH0004715

27 nH,J ,1005 ,R/TP ,

1005GC2T27NJ00

L120

INDUCTOR,CHIP

ELCH0004721

2.2 nH,S ,1005 ,R/TP ,

1005GC2T2N2S00

L121

INDUCTOR,CHIP

ELCH0004722

47 nH,J ,1005 ,R/TP ,

1005GC2T47NJ00

L122

INDUCTOR,CHIP

ELCH0004706

10 nH,J ,1005 ,R/TP ,

1005GC2T10NJ00

L123

INDUCTOR,CHIP

ELCH0004730

33 nH,J ,1005 ,R/TP ,

1005GC2T33NJ00

L124

INDUCTOR,CHIP

ELCH0004709

3.3 nH,S ,1005 ,R/TP ,

1005GC2T3N3S00

L126

INDUCTOR,CHIP

ELCH0004730

33 nH,J ,1005 ,R/TP ,

1005GC2T33NJ00

Z3X-BOX.COM

Internal Use Only

152

Summary of Contents for VX8350

Page 1: ...07R CELLULAR Power Current Voltage Part Name MODE 6 Functions of Major Semi Conductors Converts baseband signal to Tx RF signal RFT6150 Converts Rx RF signal to baseband signal RFR6500 Flash Memory 512Mbit SDRAM 512Mbit Storing of terminal operation program Memory MCP HYG0SEG0AF1P 6S0E Terminal operation control and digital signal processing MSM6500 Function Classification 7 Frequency Stability CE...

Page 2: ...s Inc All right reserved Only for training and service purposes LGE Internal Use Only Internal Use Only CDMA Mobile Subscriber Unit VX8350 SERVICE MANUAL SERVICE MANUAL DUAL BAND CDMA PCS Cellular w GPS CDMA MOBILE PHONE Z 3 X B O X C O M ...

Page 3: ...hone Number Inputting Method 16 CHAPTER 3 Circuit Description 26 3 1 RF Transmit Receive Part 26 3 2 Digital Voice Processing Part 32 CHAPTER 4 Trouble Shooting 36 4 1 Rx Part Trouble 36 4 1 1 DCN Rx 36 4 1 2 PCS Rx 48 4 2 Tx Part Trouble 60 4 2 1 DCN Tx 60 4 2 2 PCS Tx 74 4 3 Logic Part Trouble 88 4 3 1 Power 88 4 3 2 LCD 92 4 3 3 Camera 94 4 3 4 Audio 97 4 3 5 Backlight 109 4 3 6 Vibrator 111 4 ...

Page 4: ...ed and to use one frequency channel by multiple users in the same specific area resulting that it increases the capacity 10 times more compared with that in the analog mode currently used Soft Softer Handoff Hard Handoff and Dynamic RF power Control technologies are combined into this phone to reduce the call being interrupted in a middle of talking over the phone Cellular and PCS CDMA network con...

Page 5: ...al Cellular systems is a multi access technology under the interference limited environment It can process more number of subscribers compared to other systems TDMA system has the processing capacity three times greater than the existing FDMA system whereas CDMA system about 12 15 times of that of the existing system CDMA system can be explained as follows TDMA or CDMA can be used to enable each p...

Page 6: ...gnal to interference through the use of transmit power control on all the mobile stations the system capacity can be maximized If the signal power of mobile station is received too strong the performance of that mobile station is improved However because of this the interference on other mobile stations using the same channel is increased and accordingly the call quality of other subscribers is re...

Page 7: ...s will reduce the interference on other CDMA signals and as a result improve system performance capacity increased by about two times 1 2 4 Protecting Call Confidentiality Voice privacy is provided in the CDMA system by means of the private long code mask used for PN spreading Voice privacy can be applied on the traffic channels only All calls are initiated using the public long code mask for PN s...

Page 8: ...by the entire system is increased by three times 1 2 7 Soft Capacity The subscriber capacity of the CDMA system is flexible depending on the relation between the number of users and service classes For example the system operator can increase the number of channels available for use during the busy hour despite the drop in call quality This type of function requires 40 of normal call channels in t...

Page 9: ...btain processing gain by not increasing the ratio The carrier wave of pilot channel from the cell site most adjacently located is demodulated in order to obtain the sequence of encoded data symbols During the operation with one cell site the searcher searches out multi paths in accordance with terrain and building reflections On three data receivers the most powerful 3 paths are allocated for the ...

Page 10: ...MAX POWER CELLULAR 0 8 mA 110 170mA 600 mA 24 dBm PCS 0 8 mA 110 170 mA 600 mA 24 dBm 1 4 1 5 Operating Temperature 0 C 60 C 1 4 1 6 Frequency Stability 1 CDMA 0 5PPM 2 PCS 0 1PPM 1 4 1 7 Antenna Internal Type 50ohm 1 4 1 8 Size and Weight 1 Size 94 7 H 50 W 22 1 D mm 2 Weight 93 5 g Approximately with standard battery 1 4 1 9 Channel Spacing 1 CELLULAR 1 25MHz 2 PCS 1 25 MHz 1 4 1 10 Battery Type...

Page 11: ...dB or more GPS 148 5dBm without SA mode 1 4 2 4 Selectivity CELLULAR 3dB C N Degration With Fch 1 25 kHz 30dBm PCS 3dB C N Degration With Fch 1 25 kHz 30dBm 1 4 2 5 Spurious Wave Suppression Maximum of 80dB 1 4 2 6 CDMA Input Signal Range Dynamic area of more than 104 25 dB 79dB at the 1 23MHz band 1 4 3 Transmit Specification 1 4 3 1 Frequency Range CELLULAR 824 820MHz 848 190MHz PCS 1850 MHz 191...

Page 12: ...tion Transmitter Frequency 1 4 4 1 CELLULAR mode Ch Center Freq MHz Ch Center Freq MHz 1011 29 70 111 152 193 234 275 316 363 824 640 825 870 827 100 828 330 829 560 830 790 832 020 833 250 834 480 835 890 404 445 486 527 568 609 650 697 738 779 837 120 838 350 839 580 840 810 842 040 843 270 844 500 845 910 847 140 848 370 1 4 4 2 PCS mode Ch Center Freq MHz Ch Center Freq MHz Ch Center Freq MHz ...

Page 13: ...00 1000 1900 00 225 1861 25 625 1881 25 1025 1901 25 250 1862 50 650 1882 50 1050 1902 50 275 1863 75 675 1883 75 1075 1903 75 300 1865 00 700 1885 00 1100 1905 00 325 1866 25 725 1886 25 1125 1906 25 350 1867 50 750 1887 50 1150 1907 50 375 1868 75 775 1888 75 1175 1908 75 1 4 5 2 PCS mode Ch Center Freq MHz Ch Center Freq MHz Ch Center Freq MHz 25 1931 25 425 1951 25 825 1971 25 50 1932 50 450 1...

Page 14: ... 1982 50 275 1943 75 675 1963 75 1075 1983 75 300 1945 00 700 1965 00 1100 1985 00 325 1946 25 725 1966 25 1125 1986 25 350 1947 50 750 1967 50 1150 1987 50 375 1948 75 775 1968 75 1175 1988 75 1 4 5 3 GPS mode 1575 42 MHz 1 4 5 4 Bluetooth mode 2400 MHz 2483 5 MHz 1 4 6 AC Adaptor See Appendix 1 4 7 Cigar Lighter Charger See Appendix Z 3 X B O X C O M ...

Page 15: ...ot facing each other and keep microphone a generous distance from the speaker 1 5 3 2 Cradle Installation Choose an appropriate flat surface where the unit will not interface with driver s movement or passenger s comfort The driver user should be able to access the phone with ease Using the four self tapping screws provided mount the supplied bracket on the selected area Then with the four machine...

Page 16: ...black wire to the car ground Connect the green wire to the car ignition sensor terminal In order to operate HFK please make sure to connect green wire to ignition sensor terminal Connect the kit s power cable connector to the interface box power receptacle 1 5 3 5 2 Antenna Cable Connection Connect the antenna coupler cable connector from the cradle to the external antenna connector Antenna is not...

Page 17: ...ethod Inputting of telephone numbers included 2 1 NAM Programming Method 1 Press 77647268550 SEND and then press 000000 2 Press 1 key for entering Service Prg Usually pressing soft key will save the change To exit service program press END key 3 MEID ESN You can see the MEID ESN number Press softkey OK Message key to edit more NAM1 items Press softkey Exit Contacts to exit Service Programming Z 3 ...

Page 18: ...dit more NAM1 items Press softkey Exit Contacts to edit previous NAM1 items 5 NAM1 Phone Number MIN You can edit the NAM1 Phone Number MIN Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items 6 NAM1 Home SID You can edit the NAM1 Home SID Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 it...

Page 19: ... items Press softkey Back Contacts to edit previous NAM1 items 8 More NAM1 Programming You can decide to edit more NAM1 Name Press softkey OK Message key to exit Service Programming Press softkey More Contacts to edit more advanced NAM1 items 9 Service Code You can edit Service Code Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items Z 3 X B...

Page 20: ...o edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items 11 NAM1 NMSID You can edit NAM1 NMSID Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items 12 NAM1 True IMSI MCC You can edit NAM1 True IMSI MCC Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items Z 3 X B O X...

Page 21: ...dit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items 14 NAM1 PRL Enabled You can see NAM1 PRL Enabled Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items 15 CDMA Home SID NID You can edit NAM1 Home SID NID pair Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items ...

Page 22: ...M1 items Press softkey Back Contacts to edit previous NAM1 items 17 NAM1 CDMA Sec CH A You can edit NAM1 CDMA Secondary Channel A Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items 18 NAM1 CDMA Pri CH B You can edit NAM1 CDMA Primary Channel B Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous ...

Page 23: ... softkey Back Contacts to edit previous NAM1 items 20 Lockout SID NID You can edit Lockout SID NID pair Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items 21 NAM1 Home Sys Reg You can edit NAM1 Home System Registration Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items Press Left Rig...

Page 24: ...t previous NAM1 items Press Left Right Up Down key to toggle Yes No 23 NAM1 Forn NID Reg You can edit NAM1 Foreign NID Registration Press softkey OK Message key to edit more NAM1 items Press softkey Back Contacts to edit previous NAM1 items Press Left Right Up Down key to toggle Yes No 24 NAM1 ACC Ovld Class You can edit NAM1 Access Overload Class Press softkey OK Message key to edit more NAM1 ite...

Page 25: ... to skip NAM2 items setting Press softkey Edit Contacts to edit NAM2 related items 26 Phone Model You can see the Phone Model Number Press softkey OK Message key to edit more items Press softkey Back Contacts to edit previous items 27 Slot Cycle Index You can edit Slot Cycle Index Press softkey OK Message key to save Slot Cycle Index Press softkey Back Contacts to edit previous items Z 3 X B O X C...

Page 27: ...6500 the RF signal is changed into baseband signal directly Then this signal is changed into digital signal by the analog to digital converter ADC A D Converter and the digital circuit part of the MSM Mobile Station Modem 6500 processes the data from ADC The digital processing part is a demodulator In the case of transmission RFT6150 receives OQPSK modulated analog signal from the MSM6500 The RFT6...

Page 29: ...ally called preselector It s main function is to limit the bandwidth of spectrum reaching the LNA and mixer attenuate receiver spurious response and suppress local oscillator energy As a result frequency sensitivity and selectivity of mobile phone increase The specification of VX8350 duplexer described below z PCS duplexer TX RX TX to RX min Pass Band 1850 1910 MHz 1930 1990 MHz Insertion Loss 3 5...

Page 30: ...S Cellular PCS Gain 19 20 3 3 14 15 dB Noise Figure 20 20 4 5 6 1 3 1 1 dB Input IP3 10 10 5 10 7 3 dBm Parameter 3 1 2 4 GPS LNA U108 The characteristics of Low Noise Amplifier LNA are low noise figure high gain high intercept point and high reverse isolation The frequency selectivity characteristic of mobile phone is mostly determined by LNA The specification of VX8350 GPS LNA is described below...

Page 31: ...lar PCS Noise Figure 25 27 7 9 12 dB Input IP3 5 11 4 4 dBm Input IP2 30 30 56 56 dBm Parameter 3 1 3 Description of Transmit Part Circuit 3 1 3 1 RFT6150 U107 The RFT6150 Base band to RF Transmit Processor performs all TX signal processing functions required between digital Base band and the Power Amplifier Modulator PAM The Base band quadrate signals are up converted to the Cellular or PCS frequ...

Page 32: ...e circuit are integrated onto one IC after going through the AlGaAs GaAs HBT heterojunction bipolar transistor process The module of power amplifier is made up of an output end interface circuit including this MMIC The maximum power that can be inputted through the input terminal is 10dBm and conversion gain is about 26 5dB RF transmit signals that have been amplified through the power amplifier a...

Page 33: ...ives and sends out voice and data with external sources 3 2 2 2 Voice Processing Part The voice processing part is made up of an audio codec used to convert MIC signals into digital voice signals and digital voice signals into analog voice signals amplifying part for amplifying the voice signals and sending them to the ear piece amplifying part that amplifies ringer signals coming out from MSM6500...

Page 34: ...s ARM926EJ S microprocessor core It supports both CDMA and Digital FM operating in both the cellular and PCS spectrums The subsystems within the MSM6500 include a CDMA processor a DFM processor a multi standard Vocoder an integrated CODEC with earpiece and microphone amplifiers general purpose ADC for subsystem monitoring an ARM926EJ S microprocessor and an RS 232 serial interfaces supporting forw...

Page 35: ...tdown ON OFF Control I2C I F Momentary Power Loss Detection Separate LDO 9 LDO Charger 5V 600mA MSM6500 MCP LCD 262K TFT RFR6500 RFT6150 VX8350 Logic Part Block Diagram 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 Power USB TCVR PMIC MAX8676 LDOX 9 2XComparator Li Ion Linear Charger Control 2XDC DC 8bit ADC for battery RESET Thermal Shutdown ON OFF Control I2C I F Momentary Power Loss Detection Separat...

Page 36: ...ol signal IDLE from MSM6500 The TCXO part LDO Out7 is operated by the control signal TCXO_EN from MSM6500 3 2 3 6 Logic Part The logic part consists of internal CPU of MSM RAM MCP The MSM6500 receives TCXO 19 2MHz from the X100 and controls the phone in CDMA modes The major components are as follows CPU The ARM926J S microprocessor includes a 3 stage pipelined RISC architecture both 32 bit ARM and...

Page 37: ...Trouble Shooting CHAPTER 4 Trouble Shooting 4 1 Rx Part Trouble 4 1 1 DCN Rx Test Point Test Point Mobile S W DCN duplexer Triplexer RFR6500 VCTCXO Check flow Check flow 1 Check DC Power Supply circuit 2 Check VCTCXO 2004 y Start 3 Check Control signal Redownload S W Cal NO 4 Check RF Signal path 5 Check Rx I Q data Z 3 X B O X C O M ...

Page 38: ...lectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 C427 C422 4 1 1 1 Checking DC Power supply circuit PMIC Test Point Test Point Circuit Diagram Circuit Diagram Z 3 X B O X C O M ...

Page 39: ...ronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Check C427 TP2 2 9V_RX0 is OK Check C422 TP1 2 6V_MSMP2 is OK YES Start y k y t t y t t NO NO YES Z 3 X B O X C O M ...

Page 40: ...07 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only C140 R106 TP1 TP2 4 1 1 2 Checking VCTCXO circuit Test Point Test Point Circuit Diagram Circuit Diagram Z 3 X B O X C O M ...

Page 41: ...0 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Waveform Waveform Figure 4 1 1 a Figure 4 1 1 b Z 3 X B O X C O M ...

Page 42: ...ronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Circuit Diagram Circuit Diagram 4 1 1 3 Checking Control signal Test Point Test Point U106 pin49 SBST0 pin50 SBDT0 pin51 SBCK0 Z 3 X B O X C O M ...

Page 43: ...0 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Waveform Waveform Figure 4 1 1 c Figure 4 1 1 d Z 3 X B O X C O M ...

Page 44: ...vice purposes LGE Internal Use Only U101 Pin4 L111 C116 L112 L118 F105 Pin5 DP100 Pin3 U109 C188 C102 L103 C100 L101 Circuit Diagram Circuit Diagram PCS Tx DCN Tx PCS Rx DCN Rx TP1 TP2 TP3 4 1 1 4 Checking RF signal path Mobile S W Triplexer Duplexer Test Point Test Point Z 3 X B O X C O M ...

Page 46: ...ht 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Waveform Waveform U100 pin4 Figure 4 1 1 e F105 pin5 Figure 4 1 1 f Figure 4 1 1 g DP100 pin3 Z 3 X B O X C O M ...

Page 47: ...s Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 1 1 5 Checking Rx I Q data Test Point Test Point Circuit Diagram Circuit Diagram U106 Pin7 RX0_QM Pin8 RX0_QP Pin9 RX0_IM Pin10 RX0_IP Z 3 X B O X C O M ...

Page 48: ...ectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Waveform Waveform RX0_QP RX0_IP RX0_IM RX_Q_ N RX0_Q M RX_Q_ N Figure 4 1 1 h Figure 4 1 1 i Z 3 X B O X C O M ...

Page 49: ...s LGE Internal Use Only 4 1 2 PCS Rx Test Point Test Point Checking Flow Checking Flow Mobile S W PCS duplexer Triplexer RFR6500 VCTCXO 1 Check DC Power Supply circuit 2 Check VCTCXO 4182 y Start 3 Check Control signal Redownload S W Cal NO 4 Check RF Signal path 5 Check Rx I Q data Z 3 X B O X C O M ...

Page 50: ...lectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 C427 C422 4 1 2 1 Checking DC Power supply circuit PMIC Test Point Test Point Circuit Diagram Circuit Diagram Z 3 X B O X C O M ...

Page 51: ...ronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Check C427 TP2 2 9V_RX0 is OK Check C422 TP1 2 6V_MSMP2 is OK YES Start y k y t t y t t NO NO YES Z 3 X B O X C O M ...

Page 52: ...07 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only C140 R106 TP1 TP2 4 1 2 2 Checking VCTCXO circuit Test Point Test Point Circuit Diagram Circuit Diagram Z 3 X B O X C O M ...

Page 53: ...0 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Waveform Waveform Figure 4 1 2 a Figure 4 1 2 b Z 3 X B O X C O M ...

Page 54: ...ronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Circuit Diagram Circuit Diagram 4 1 2 3 Checking Control signal Test Point Test Point U106 pin49 SBST0 pin50 SBDT0 pin51 SBCK0 Z 3 X B O X C O M ...

Page 55: ...0 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Waveform Waveform Figure 4 1 2 c Figure 4 1 2 d Z 3 X B O X C O M ...

Page 56: ...vice purposes LGE Internal Use Only U101 Pin4 L124 C117 L113 L119 F105 Pin7 DP101 Pin2 U101 C187 L137 L105 C100 L101 4 1 2 4 Checking RF signal path Mobile S W Triplexer Duplexer Test Point Test Point Circuit Diagram Circuit Diagram PCS Tx DCN Tx PCS Rx DCN Rx TP1 TP2 TP3 Z 3 X B O X C O M ...

Page 58: ...t 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Waveform Waveform Figure 4 1 2 e Figure 4 1 2 f Figure 4 1 2 g U100 Pin 4 F105 Pin 7 DP101 Pin 2 Z 3 X B O X C O M ...

Page 59: ...s Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 1 2 5 Checking Rx I Q data Test Point Test Point Circuit Diagram Circuit Diagram U106 Pin7 RX0_QM Pin8 RX0_QP Pin9 RX0_IM Pin10 RX0_IP Z 3 X B O X C O M ...

Page 60: ...ectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Waveform Waveform RX0_QP RX0_IP RX0_IM RX_Q_ N RX0_Q M RX_Q_ N Figure 4 1 2 h Figure 4 1 2 i Z 3 X B O X C O M ...

Page 61: ... 4 2 1 DCN Tx 1 Check DC Power Supply circuit 2 Check VCTCXO Press 5473784236368 SEND key 000000 in Phone idle state Press 5 to enter FCC Test Press 2 to enter CDMA FCC mode Set channel to 384 and AGC to 360 Measure frequency domain waveform with Spectrum analyser Measure time domain waveform with Oscilloscope Start 6 Check DCN Duplexer Redownload S W Cal NO 7 Check Triplexer 8 Check Mobile Switch...

Page 62: ...lectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 C424 C422 4 2 1 1 Checking DC Power supply circuit PMIC Test Point Test Point Circuit Diagram Circuit Diagram Z 3 X B O X C O M ...

Page 64: ...07 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only C140 R106 TP1 TP2 4 2 1 2 Checking VCTCXO circuit Test Point Test Point Circuit Diagram Circuit Diagram Z 3 X B O X C O M ...

Page 65: ...nternal Use Only Checking Flow Checking Flow Check X100 pin3 TP1 Is it 19 2MHz Refer to figure 4 2 1 a NO Start y t t YES NO NO Check X100 pin4 TP2 Is it 2 85V Refer to figure 4 2 1 b Replace X100 and then check R106 C140 YES Is it similar YES Waveform Waveform Figure 4 2 1 a Figure 4 2 1 b Z 3 X B O X C O M ...

Page 66: ...d service purposes LGE Internal Use Only 4 2 1 3 Checking RFT6150 circuit Test Point Test Point U107 PIN23 TX_ON SBCK0 SBDT0 SBST0 TX_QM PIN15 PIN 27 PIN 28 PIN 29 PIN 30 PIN 1 2 3 4 Circuit Diagram Circuit Diagram CELL_OUT TCXO TX_QP TX_IP TX_IM TP1 TP2 TP3 TP4 TP5 Z 3 X B O X C O M ...

Page 67: ...s OK See next page NO Replace U107 YES Check pin27 28 29 30 at U107 TP2 Check if there is any major difference referring To Figure 4 2 1 d Is it similar Check MSM6500 U200 NO YES Check pin1 TX_ON at U107 TP3 whether it is higher than 2 5V Check TX_ON signal MSM NO Check pin2 3 4 at U107 TP5 Referring to Figure 4 2 1 f Is it similar YES Check SBI signal line MSM NO YES Check pin15 TCXO at U107 TP4 ...

Page 68: ...nics Inc All right reserved Only for training and service purposes LGE Internal Use Only Waveform Waveform Figure 4 2 1 c Figure 4 2 1 e RX_I_N RX_I_P RX_Q_P RX_Q_N Figure 4 2 1 d SBD T SBC K SBS T SBC K Figure 4 2 1 f Z 3 X B O X C O M ...

Page 69: ...nd service purposes LGE Internal Use Only TP1 TP2 RF_OUT RF_IN F104 4 2 1 4 Check DCN RF Tx SAW Test Point Test Point Circuit Diagram Circuit Diagram Checking Flow Checking Flow RF_IN Waveform Waveform RF_IN fed up with CW signal Figure 4 2 1 g RF_OUT Figure 4 2 1 h Z 3 X B O X C O M ...

Page 70: ...nics Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 TP4 RFOUT VCC 4 2 1 5 Check DCN PAM circuit Test Point Test Point VBATT VMODE RFIN VEN Circuit Diagram Circuit Diagram TP3 Z 3 X B O X C O M ...

Page 71: ...ronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Waveform Waveform RF_IN RF_IN fed up with CW signal in low gain mode of PAM RF_OUT Figure 4 2 1 i Z 3 X B O X C O M ...

Page 72: ...ly for training and service purposes LGE Internal Use Only Circuit Diagram Circuit Diagram TP1 TP2 DP100 4 2 1 6 Check DCN Duplexer Test Point Test Point ANT_PORT TX_PORT Checking Flow Checking Flow Waveform Waveform Tx Port ANT Port Figure 4 2 1 j Z 3 X B O X C O M ...

Page 73: ...nly for training and service purposes LGE Internal Use Only Test Point Test Point F105 Ant Port TP1 TP2 4 2 1 7 Check Triplexer Circuit Diagram Circuit Diagram DCN Port Checking Flow Checking Flow Waveform Waveform DCN Port ANT Port Figure 4 2 1 k Z 3 X B O X C O M ...

Page 74: ...erved Only for training and service purposes LGE Internal Use Only TP2 TP1 4 2 1 8 Check Mobile S W Test Point Test Point Circuit Diagram Circuit Diagram RF OUT RF IN Checking Flow Checking Flow Waveform Waveform RF IN RF OUT Figure 4 2 1 l Z 3 X B O X C O M ...

Page 75: ...iagram 1 Check DC Power Supply circuit 2 Check VCTCXO Press 5473784236368 SEND key 000000 in Phone idle state Press 5 to enter FCC Test Press 2 to enter PCS FCC mode Set channel to 600 and AGC to 360 Measure frequency domain waveform with Spectrum analyser Measure time domain waveform with Oscilloscope Start 6 Check PCS Duplexer Redownload S W Cal NO 7 Check Triplexer 8 Check Mobile Switch 3 Check...

Page 76: ...lectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 C424 C422 4 2 2 1 Checking DC Power supply circuit PMIC Test Point Test Point Circuit Diagram Circuit Diagram Z 3 X B O X C O M ...

Page 78: ...07 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only C140 R106 TP1 TP2 4 2 2 2 Checking VCTCXO circuit Test Point Test Point Circuit Diagram Circuit Diagram Z 3 X B O X C O M ...

Page 79: ...0 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Waveform Waveform Figure 4 2 2 a Figure 4 2 2 b Z 3 X B O X C O M ...

Page 80: ...nd service purposes LGE Internal Use Only 4 2 2 3 Checking RFT6150 circuit Test Point Test Point U107 PIN21 TX_ON SBCK0 SBDT0 SBST0 TX_QM PIN15 PIN 27 PIN 28 PIN 29 PIN 30 PIN 1 2 3 4 Circuit Diagram Circuit Diagram PCS_OUT TCXO TX_QP TX_IP TX_IM TP1 TP2 TP3 TP4 TP5 Z 3 X B O X C O M ...

Page 81: ...s OK See next page YES Replace U107 YES Check pin27 28 29 30 at U107 TP2 Check if there is any major difference referring To Figure 4 2 2 d Is it similar Check MSM6500 U200 NO YES Check pin1 TX_ON at U107 TP3 whether it is higher than 2 5V Check TX_ON signal MSM NO Check pin2 3 4 at U107 TP5 Referring to Figure 4 2 2 f Is it similar YES Check SBI signal line MSM NO YES Check pin15 TCXO at U107 TP4...

Page 82: ...nics Inc All right reserved Only for training and service purposes LGE Internal Use Only Waveform Waveform Figure 4 2 2 c Figure 4 2 2 e RX_I_N RX_I_P RX_Q_P RX_Q_N Figure 4 2 2 d SBD T SBC K SBS T SBC K Figure 4 2 2 f Z 3 X B O X C O M ...

Page 83: ...nd service purposes LGE Internal Use Only RF_IN RF_OUT Figure 4 2 2 h RF_IN fed up with CW signal TP1 TP2 4 2 2 4 Check PCS RF Tx SAW Test Point Test Point Circuit Diagram Circuit Diagram Checking Flow Checking Flow RF_OUT RF_IN F103 Waveform Waveform Figure 4 2 2 g Z 3 X B O X C O M ...

Page 84: ...nics Inc All right reserved Only for training and service purposes LGE Internal Use Only TP1 TP2 TP4 RFOUT VCC 4 2 2 5 Check PCS PAM circuit Test Point Test Point VMODE VBATT VEN RFIN Circuit Diagram Circuit Diagram TP3 Z 3 X B O X C O M ...

Page 85: ...ectronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Waveform Waveform RF_OUT Figure 4 2 2 i RF_IN fed up with CW signal in low gain mode of PAM Z 3 X B O X C O M ...

Page 86: ...ly for training and service purposes LGE Internal Use Only Figure 4 2 2 j Tx Port ANT Port TP1 TP2 ANT_PORT TX_PORT DP101 4 2 2 6 Check PCS Duplexer Test Point Test Point Circuit Diagram Circuit Diagram Checking Flow Checking Flow Waveform Waveform Z 3 X B O X C O M ...

Page 87: ...nly for training and service purposes LGE Internal Use Only PCS Port TP2 TP1 ANT Port 4 2 2 7 Check Triplexer Test Point Test Point F105 Ant Port Circuit Diagram Circuit Diagram PCS Port Checking Flow Checking Flow Waveform Waveform Figure 4 2 2 k Z 3 X B O X C O M ...

Page 88: ...erved Only for training and service purposes LGE Internal Use Only RF IN TP2 TP1 4 2 2 8 Check Mobile S W Test Point Test Point Circuit Diagram Circuit Diagram RF OUT RF IN Checking Flow Checking Flow Waveform Waveform RF OUT Figure 4 2 2 9 Z 3 X B O X C O M ...

Page 89: ...Use Only 1 4V_MSMC L402 L403 1 8V_MSMP1 2 6V_MSMP2 U401 2 6V_MSMA 2 9V_RXO 2 85V_TCXO C 4 2 2 C 4 2 3 C 4 2 7 C 4 3 0 1 4V_MSMC U401 1 8V_MSMP1 2 85V_TCXO 4 3 Logic Part Trouble 4 3 1 Power 4 3 1 1 Power On Trouble Circuit Diagram Circuit Diagram Test point Test point 2 9V_RXO 2 6V_MSMA 2 6V_MSMP2 Z 3 X B O X C O M ...

Page 91: ... All right reserved Only for training and service purposes LGE Internal Use Only Test point Test point 4 3 1 2 Charging Trouble Circuit Diagram Circuit Diagram Battery Vcc D601 C611 C410 C420 Pin4 CON600 U600 1 2 3 4 D601 Q600 Z 3 X B O X C O M ...

Page 92: ... contact pin CON600 2 The battery may have the problem Change the battery and try again Voltage at VPWR of C420 4 2V START YES Voltage at V_CHAR of D600 4 8V NO The charging adaptor TA is out of order Change the charging adaptor Replace U600 D601 Voltage at C410 4 8V YES YES YES NO NO YES Replace PMIC U401 The logic level at CHG_MODE of Q600 Low NO Replace Q600 Is the battery charged NO Charging w...

Page 93: ...02 F606 F603 F605 2 8V LCD C428 LCD DATA LINES C604 F208 F207 Test point C604 2 8V LCD F605 F606 F602 F603 F604 4 3 2 LCD 4 3 2 1 LCD Trouble Circuit Diagram Circuit Diagram Check point The assembly status of the LCD Module The assembly status of the main connector The Soldering of connector Test point Test point Z 3 X B O X C O M ...

Page 94: ...solder F602 F603 F604 F605 F606 signal control lines filter YES NO YES NO NO NO NO YES YES YES Does LCD work properly Change the LCD module The voltage of C428 is 2 8V Replace U401 The soldering status of control signal lines is OK The soldering status of CON603 is OK Replace CON603 Is main FPCB good Change the FPCB LCD will be worked properly Z 3 X B O X C O M ...

Page 95: ...ice purposes LGE Internal Use Only Test point Test point CAM_Pclk Mclk 8 bit CAM_DATA line Analog Power Digital Power I O Power Vsync Hsync SDA SCK F607 R611 Mclk _19 2Mhz R610 Pclk _24Mhz Camera data line 4 3 3 Camera 4 3 3 1 Camera Trouble Circuit Diagram Circuit Diagram Z 3 X B O X C O M ...

Page 96: ...95 VX8350 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Test point Test point C439_ IOVDD R421_ AVDD R422_ DVDD Z 3 X B O X C O M ...

Page 97: ...B Camera will work properly YES NO YES NO NO NO NO YES YES YES Replace R611 Check the FPCB The voltage of R421 Analog is 2 8V Replace U404 R421 The voltage of R421 Digital is 1 8V Replace U404 R422 The voltage of C439 IOVDD is 2 8V Replace U405 Replace FPCB F607 looks good Check the FPCB NO Re soldering or replace F607 NO Replace camera module FPCB R611 Check the R610 24Mhz Z 3 X B O X C O M ...

Page 98: ...ved Only for training and service purposes LGE Internal Use Only 4 3 4Audio 4 3 4 1 Speaker Trouble Circuit Diagram Circuit Diagram Test points Test points C429 VR400 VR401 VR402 VR403 C425 C400 U400 C429 U400 VR400 VR401 VR402 VR403 C400 C425 Z 3 X B O X C O M ...

Page 99: ... Re solder U400 START Voltage atC429 Is about 3 4 4 2V NO Replace C429 Check the audio signal at C400 C425 Check the Soldering of C400 C425 Check the audio signal at VR400 VR401 VR402 VR403 Check the Soldering of U400 Replace U400 Check the state Of contact of speaker Speaker will work properly Yes SETTING Melody on at sounds of test menu Yes Yes Yes Yes NO NO NO NO NO Z 3 X B O X C O M ...

Page 100: ...ronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 3 4 2 Receiver Trouble Circuit Diagram Circuit Diagram Test points Test points L400 L401 C429 C401 U400 C429 U400 L400 L401 Z 3 X B O X C O M ...

Page 101: ...eplace MSM Yes Re solder C401 Re solder U400 START Voltage atC429 Is about 3 4 4 2V NO Replace C429 Check the audio signal at C401 Check the Soldering of C401 Check the audio signal at L400 L401 Check the Soldering of U400 Replace U400 Check the state Of contact of receiver Receiver will work properly Yes Yes Yes Yes Yes NO NO NO NO NO Z 3 X B O X C O M ...

Page 102: ...8350 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 3 4 3 MIC Trouble Circuit Diagram Circuit Diagram U201 R203 C208 C210 Z 3 X B O X C O M ...

Page 103: ...2 VX8350 Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Test points Test points MIC network U201 R203 C208 C210 MSM6500 Z 3 X B O X C O M ...

Page 104: ...15C Test Cellular Replace MSM Yes Re solder R203 START Check the voltage level at R203 is 1 2 1 5V NO Replace the microphone U201 Check the signal level at each side of MIC Check the Soldering of R203 Check the soldering of C208 C210 Check the soldering of MIC network MIC will work properly Yes Yes Yes Yes Yes NO NO NO Re solder C208 C210 NO Replace MIC network Z 3 X B O X C O M ...

Page 105: ...07 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only 4 3 4 4 Headset Trouble Circuit Diagram Circuit Diagram PMIC U401 내부 Inverter C405 C406 CON301 R308 U401 Z 3 X B O X C O M ...

Page 106: ...Copyright 2007 LG Electronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Test points Test points U401 CON301 C405 C406 R308 PIN1 PIN1 PIN5 PIN4 PIN3 PIN2 Z 3 X B O X C O M ...

Page 107: ... from the headset Insert the headset to the handset 1 Headset detect Problem Set the audio part of the test equipment to echo mode Can yoe hear your voice from the headset Change the headset and try again Set the audio part of the test equipment to continuous wave mode Can you hear your voice from the headset 2 Headset receiving Path problem 3 Headset sending Path problem 4 The headset will work p...

Page 108: ...age level of C405 C406 is about 1 8V NO Download S W Check the soldering of Pin 2 3 of CON301 Check the Soldering of R308 Yes Yes Yes NO Change main board Re soldering of Pin 2 3 of CON301 NO Headset detect problem 1 Headset receiving Path problem Headset detect Problem Level of pin4 of CON301 is 1 65 2 1V Check the soldering of U401 Yes Yes Yes NO Level of EAR_JACK_SENSE Yes 4 NO NO Yes Z 3 X B O...

Page 109: ...r training and service purposes LGE Internal Use Only Headset Sending path problem 3 Re solder R308 Change main board Does it work Yes Yes NO Download S W NO Headset sending Path problem Level of pin4 of CON301 is 1 65 2 1V Yes Does it work well Yes 4 NO Z 3 X B O X C O M ...

Page 110: ...ning and service purposes LGE Internal Use Only R514 Main Keypad LED Enable Q600 LED Switching Tr R514 Main Keypad LED Enable Circuit Diagram Circuit Diagram 4 3 5 Backlight 4 3 5 1 Numeric key backlight Q500 LED Switching Tr Test point Test point LED500 LED515 Z 3 X B O X C O M ...

Page 112: ...rved Only for training and service purposes LGE Internal Use Only 4 3 6 Vibrator 4 3 6 1 Operating Vibrator Circuit Diagram Circuit Diagram Test point Test point 3 0V_Motor 3 0V_Motor U401 PMIC CON603 B d to B d C412 3 0V_Motor C605 3 0V_Motor Z 3 X B O X C O M ...

Page 113: ...eserved Only for training and service purposes LGE Internal Use Only Checking Flow Checking Flow Setting ON at the motor test of test mode Is theOperating voltage of MOTOR about 3 0V NO Re solder U401 PMIC YES Start Motor will work properly Z 3 X B O X C O M ...

Page 114: ... for training and service purposes LGE Internal Use Only 4 4 Bluetooth Part Trouble 4 4 1 Bluetooth Circuit Circuit Diagram Circuit Diagram TP1 TP2 TP4 TP3 4 4 2 Bluetooth Block Test Point Test Point C304 U302 Pin 14 U302 U302 Pin 10 U302 Pin 9 BT_CLK Z 3 X B O X C O M ...

Page 115: ...Press 5 FCC Test Press 3 Bluetooth FCC Press 8 DUT mode Spectrum analyzer setting Oscilloscope setting Check Bluetooth Intenna or Antenna Matching Network TP2 Check Pin10 of U302 2 6V_MSMP2 is OK YES The Problem may be Logic Part Refer to Logic Troubleshoot TP3 Check Pin14 of U302 2 8V_BT is High OK YES TP4 Check Pin9 of U302 NO The Problem may be PMIC Refer to PMIC and Replace U401 Similar to bel...

Page 116: ...loped this updated Standard In March 1993 the US Federal Communications Commission FCC proposed the adoption of this updated Standard The design of your phone complies with this updated Standard Of course if you want to limit RF exposure even further than the updated ANSI Standard you may choose to control the duration of your calls and operation your phone in the most power efficient manner Effic...

Page 117: ...nal RF energy Aircraft Turn your phone OFF before boarding any aircraft Use it on the ground only with crew permission Do not use it in the air To prevent possible interference with aircraft systems US Federal Aviation Administration FAA regulations require you to have permission from a crew member to use your phone while the plane is on the ground Using your phone while the plane is in the air Ch...

Page 118: ...iquefied petroleum gas such as propane or butane must compl7y with the National Fire Protection Standard NFPA 58 For a copy of this standard contact the National Fire Protection Association One Battery march Park Quincy MA 02269 Attn Publication Sales Division Rule of Thumb Using common sense at all times when handling installing or using the phone Any questions should be directed to you nearest S...

Page 119: ...cess Channel generated to reply to a message received from the base station Access Channel Slot The assigned time interval for an access probe An Access Channel slot consists of an integer number of frames The transmission of an access probe is performed within the boundaries of an Access Channel slot Access Probe One Access Channel transmission consisting of a preamble and a message The transmiss...

Page 120: ...o Good Frames Base Station A station in the Domestic Public Cellular Radio Telecommunications Service other than a mobile station used for communicating with mobile stations Depending upon the context the term base station may refer to a cell a sector within a cell an MSC or other part of the Cellular system See also MSC Base Station Authentication Response AUTHBS An 18 bit pattern generated by th...

Page 121: ...edundancy Code CRC A class of linear error detecting codes which generate parity check bits by finding the remainder of a polynomial division Data Burst Randomizer The function that determines which power control groups within a frame are transmitted on the Reverse Traffic Channel when the data rate is lower than 9600 bps The data burst randomizer determines for each mobile station the pseudo rand...

Page 122: ...onic Serial Number Extended Protocol An optional expansion of the signaling message between the base station and mobile station to allow for the addition of new system features and operational capabilities Fade Timer A timer kept by the mobile station as a measure of Forward Traffic Channel continuity If the Fade timer expires the mobile station drops the call Flash An indication sent on an analog...

Page 123: ...haracterized by a temporary disconnection of the Traffic Channel Hard handoffs Occur when the mobile station is transferred between disjoint Active Sets the CDMA frequency assignment changes the frame offset changes or the mobile station is directed from a CDMA Traffic Channel to an analog voice channel See also Soft Handoff Hash Function A function used by the mobile station to select one out of ...

Page 124: ... message consists of a length field MSG_LENGTH a message body the part conveying the information and a CRC Message Body The part of the message contained between the length field MSG_LENGTH and the CRC field Message Capsule A sequence of bits comprising a single message and padding The padding always follows the message and may be of zero length Message CRC The CRC associated with a message See al...

Page 125: ... stations or a group of base stations set up to handle a special requirement A network can be as small or as large as needed as long as it is fully contained within a system See also System Network Identification NID A number that uniquely identifies a network within a Cellular system See also System Identification NID See Network Identification Non Autonomous Registration A registration method in...

Page 126: ...om a base station to a mobile station Paging Channel Slot An 80ms interval on the Paging Channel Mobile station operating in the slotted mode are assigned specific slots in which day monitor messages from the base station Parameter Change Registration A registration method in which the mobile station registers when certain of its stored parameters change Parity Check Bits Bits added to a sequence ...

Page 127: ...ed by the public long code mask Public Long Code Mask The long code mask used to form the private long code The mask contains the ESN of the mobile station See also Private Long Code Mask and Long Code Punctured Code An error correcting code generated from another error correcting code by deleting i e puncturing code symbols from the code output Quick Repeats Additional transmissions of identical ...

Page 128: ...n See also Primary CDMA Channel Secondary Traffic An additional traffic stream that can be carried between the mobile station and the base station on the Traffic Channel See also Primary Traffic and Signaling Traffic Seizure Precursor The initial digital sequence transmitted by a mobile station to a base station on a reverse analog control channel Seizure Option A service capability of the system ...

Page 129: ...t respond to local control messages Roam Status Indicates whether a mobile station is in its home system Termination Status Indicates whether a mobile station must terminate the call when it is on an analog voice channel Supervisory Audio Tone SAT One of three tones in the 6 kHz region that is transmitted on the forward analog voice channel by a base station and transponder on the reverse analog v...

Page 130: ...tead of the random variable broadcast globally RAND Unique Random Variable RANDU A 24 bit random number generated by the base station in support of the Unique Challenge Response procedure Universal Coordinated Time UTC An internationally agreed upon time scale maintained by the Bureau International de l Heure BIH used as the time reference by nearly all commonly available time and frequency distri...

Page 131: ...tronics Inc All right reserved Only for training and service purposes LGE Internal Use Only Appendix Appendix 1 Assembly and Disassembly diagram 2 Block and Circuit diagram 3 Part List 4 Component Layout 5 BGA Pin Map Z 3 X B O X C O M ...

Page 132: ...1 Assembly and Disassembly Diagram Z 3 X B O X C O M 131 ...

Page 133: ...Z 3 X B O X C O M Internal Use Only 132 ...

Page 134: ...Z 3 X B O X C O M Internal Use Only 133 ...

Page 135: ...2 Block and Circuit Diagram Z 3 X B O X C O M 134 ...

Page 136: ... GPS VCO Diversity Rx VCO PCS BPF GPS BPF Primary Path Secondary Path HDET RFT6150 RFR6500 PCS Duplexer DCN Duplexer Internal Antenna Mobile S W DCN BPF PCS BPF DCN PAM PCS PAM DCN Coupler Fref Loop Filter for CDMA Tx Buffer TCXO Loop Filter for CDMA Rx Loop Filter for GPS Ref SBI Control SBI Control Tx_I Tx_Q Rx0_I Rx0_Q Rx1_I Rx1_Q PCS Coupler GPS Pre LNA U103 AWT6308R F103 B9014 F104 B9003 U102...

Page 137: ...omentary PowerLoss Detection Separate LDO 9 LDO Charger 5V 600mA Power USBTCVR PMIC MAX8676 LDOX 9 2XComparator Li Ion Linear Charger Control 2XDC DC 8bit ADC for battery RESET Thermal Shutdown ON OFF Control I2C I F Momentary PowerLoss Detection Separate LDO 9 LDO Charger 5V 600mA MSM6500 MCP LCD 262K TFT RFR6500 RFT6150 VX8350 Logic Part Block Diagram Z 3 X B O X C O M Internal Use Only 136 ...

Page 138: ...VX8350 Circuit Diagram Main fpcb 1 VX8350 Main PCB Rev1 0 2 VX8350 sub_fpcb Rev1 0 3 VX8350 mod_fpcb Rev1 2 4 VX8350 cam_key Rev1 0 5 VX8350 vol_key Rev1 0 Z 3 X B O X C O M Internal Use Only 137 ...

Page 139: ... 10 R121 11 3k 1 R119 20k 1 R105 100 R106 51 R107 100k R117 10 R120 24k 1 R122 1k 1 R113 0 R112 100k R115 10k R102 24 R124 1 5k 1 R125 1k R126 49 9 R104 240 R103 1 2k R129 10 R128 10 R127 0 R123 10k R130 100 ACMD 7402 DP101 1 TX 2 RX 3 ANT 4 GND C188 DNI C187 DNI 1005 U103 AWT6308R 1 VBATT 2 RF_IN 3 VMODE 4 VEN 5 GND1 6 GND2 7 RF_OUT 8 VCC 9 G_DUMMY C160 10u 1608 C171 10u 1608 C174 2 2u 1608 C123 ...

Page 140: ...5 UIM2_CLK GPIO 87 L23 UIM2_RESET GPIO 86 L21 UIM2_PWR_EN GPIO 85 M19 UIM2_DATA GPIO 84 D18 SYNTH2 GPIO 65 H23 SYNTH1 GPIO 41 F19 SYNTH0 GPIO 92 R21 KEYSENSE4_N GPIO 48 R23 KEYSENSE3_N GPIO 47 P16 KEYSENSE2_N GPIO 46 P19 KEYSENSE1_N GPIO 63 P21 KEYSENSE0_N GPIO 62 AE20 MIC1P AF20 MICIN AC19 MIC2P AA18 MIC2N AE19 AUX1P AF19 AUX1N AA19 MICOUTP W18 MINOUTN AF22 MICINP AE22 MININN AC20 MICFBP AC21 MIC...

Page 141: ...UG4 C303 1u EW 6672 T3 U301 1 VCC 2 GND 3 OUT ACS2450HBACU5 ANT300 1 ANT 2 GND1 3 GND2 HYG0SEG0AF1P 6S S H 0E U300 D4 A0 E4 A1 F4 A2 G4 A3 G8 A4 F8 A5 E8 A6 D8 A7 D9 A8 G7 A9 G5 A10 F7 A11 E7 A12 P10 I O0 N10 I O1 M10 I O2 L10 I O3 F10 I O4 E10 I O5 D10 I O6 C10 I O7 M3 WEn G3 CE F3 RE K3 CLE L3 ALE N3 WP E3 RY BY H11 VCCn1 H2 VCCn2 C5 VSS1 C9 VSS2 G2 VSS3 H10 VSS4 J3 J4 J5 J6 J7 J8 J9 J11 K2 K4 K...

Page 142: ...L A10 ACOK B22 ONO B1 PWRON B19 HFPWR B24 PWRHOLD B12 HRESET B2 DATA A3 CLK A8 IN4 A9 OUT8 A5 OUT9 B3 COMP1 B8 INV1 A4 COMP2 A2 INV2 A23 VBUS A26 VTRM A24 DP A25 DM A29 LX1 A28 PGND1 B18 FB1 A12 RESET A32 LX2 A27 PGND2 B17 FB2 A16 OUT1 1 B10 OUT1 2 A17 IN3 B9 OUT2 1 A15 OUT2 2 A19 OUT3 A6 IN5 B5 OUT4 A7 OUT5 A40 ENO5 A13 OUT6 B6 ENO6 B4 OUT7 A39 ENO7 A30 OE B20 SUSPEND A20 RCV A21 VP A22 VM B7 GND...

Page 143: ...Q500 1 E 3 C 2 B SW501 1 2 SW507 1 2 SW512 1 2 SW517 1 2 SW502 1 2 SW508 1 2 SW513 1 2 SW518 1 2 SW503 1 2 SW509 1 2 SW514 1 2 SW519 1 2 SW504 1 2 SW510 1 2 SW515 1 2 SW520 1 2 SW505 1 2 SW511 1 2 SW516 1 2 SW521 1 2 SW506 1 2 SW522 1 2 SW500 1 2 SIDEKEY_6PIN_MAIN CON500 1 2 3 4 5 6 SIDEKEY_4PIN_MAIN CON501 1 2 3 4 LEWW S14 LED505 1 2 LEWW S14 LED513 1 2 LEWW S14 LED510 1 2 LEWW S14 LED508 1 2 LEW...

Page 144: ...10 CHAR_MON 11 KEY_LED_EN 12 NC1 HSEJ 18S04 25R CON601 1 GND1 2 EAR_MIC 3 JACK_TYPE 4 EAR_L 5 EAR_R 6 USC0 USB_D 7 USC1 USB_D 8 JACK_DETECT 9 VBAT1 10 VBAT2 11 REMOTE_ON OFF 12 V_CHG1 13 V_CHG2 14 USC2 15 USB_PWR 16 UART_TX 17 UART_RX 18 GND2 19 20 NTS104B L600 1 2 3 4 PSD12 LF D601 1 2 ICVE10184E150R101FR F604 1 IN1 2 IN2 3 IN3 4 IN4 5 GND 6 OUT4 7 OUT3 8 OUT2 9 OUT1 10 ICVE10184E150R101FR F603 1...

Page 145: ...D_RESET D2 9 D2 15 D2 8 D2 7 D2 3 3 0V_MOTOR WE2 D2 4 MLCD_CS VSYNC_OUT CAM_PCLK CAM_VSYNC CAM_HSYNC CAM_SCK CAM_SDA CAM_RESET GB042 40P H10 E3000 CON100 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 C104 DNI CON102 14 5602 024 000 829H 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 SIDEKEY_7PIN_MAIN CON103 1 2 3 4 5 ...

Page 146: ... 2 SW100 1 2 SIDEKEY_7PIN_FPCB_TOP CON1 1 2 3 4 5 6 7 SIDEKEY_7PIN_FPCB_BOT CON2 1 2 3 4 5 6 7 RCV 2 8V_LCD MOD_ADC 3 0V_MOTOR RCV MOD_KEY_BL_EN 2 8V_LCD 3 0V_MOTOR RCV MOD_KEY_BL_EN MOD_ADC RCV VR108 ICVL0505101V150FR U100 1 U102 1 U103 1 U101 1 LEWW S14 LED100 1 2 LEWW S14 LED101 1 2 RCV MOTOR PAD PLAY MOD KEY B L FF REW MOD Conn Z 3 X B O X C O M Internal Use Only 145 ...

Page 147: ...SW100 1 2 SW101 1 2 SW102 1 2 SIDEKEY_6PIN_FPCB_TOP CON102 1 2 3 4 5 6 SIDEKEY_6PIN_FPCB_BOT CON103 1 2 3 4 5 6 UP KEY DOWN KEY REC KEY UP DOWN REC COM Z 3 X B O X C O M Internal Use Only 146 ...

Page 148: ... refer 1 2 SIDEKEY_4PIN_FPCB_BOT refer 1 2 3 4 SIDEKEY_4PIN_FPCB_TOP refer 1 2 3 4 COM CAM KEY MATRIX Z 3 X B O X C O M Internal Use Only 147 ...

Page 149: ...3 Part List Z 3 X B O X C O M 148 ...

Page 150: ... 6 3V Z Y5V HD 1608 R TP C1608Y5V0J475ZT C125 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K X7R HD 1005 R TP MCH153CN103KK C126 CAP CERAMIC CHIP ECCH0000122 47 pF 50V J NP0 TC 1005 R TP MCH155A470JK C127 CAP CERAMIC CHIP ECCH0000155 10 nF 16V K X7R HD 1005 R TP MCH153CN103KK C128 CAP CHIP MAKER ECZH0000844 68 pF 50V J NP0 TC 1005 R TP C1005C0G1H680JT C129 CAP CHIP MAKER ECZH0000826 27 pF 50V J NP0 TC 1...

Page 151: ...183 CAP CERAMIC CHIP ECCH0000137 330 pF 50V K X7R HD 1005 R TP C1005X7R1H331KT C184 CAP CERAMIC CHIP ECCH0000143 1 nF 50V K X7R HD 1005 R TP MCH155CN102KK C185 CAP CHIP MAKER ECZH0001106 4700 pF 25V K X7R HD 1005 R TP C1005X7R1E472KT C186 CAP CERAMIC CHIP ECCH0000115 22 pF 50V J NP0 TC 1005 R TP MCH155A220JK C189 CAP CERAMIC CHIP ECCH0000122 47 pF 50V J NP0 TC 1005 R TP MCH155A470JK C190 CAP CHIP ...

Page 152: ...R TP SYF 1A475M RJ C404 CAP CHIP MAKER ECZH0001216 220 nF 10V K X5R TC 1005 R TP C1005X5R1A224KT C405 CAP TANTAL CHIP ECTH0005201 33 uF 6 3V M L_ESR 2012 R TP empty empty empty 2 2X1 1X1 1MM empty empty empty TCTP0J336M8R C406 CAP TANTAL CHIP ECTH0005201 33 uF 6 3V M L_ESR 2012 R TP empty empty empty 2 2X1 1X1 1MM empty empty empty TCTP0J336M8R C410 CAP CHIP MAKER ECZH0001215 1 uF 10V K X5R TC 100...

Page 153: ...J 18S04 25R D600 DIODE SWITCHING EDSY0017701 SOD 123 40 V 1 A R TP empty empty 2P 1 SDB1040 D601 DIODE TVS EDTY0008602 SOD 323 13 3 V 400 W R TP PB FREE PSD12 LF DP100 DUPLEXER DCN SDDY0004101 836 5 MHz 881 5 MHz 2 0 dB 2 7 dB 49 dB 61 dB 3 0 2 5 1 25 SMD B7637 DP101 DUPLEXER PCS SDPY0002902 1880 MHz 1960 MHz 3 8 dB 3 5 dB 43 dB 52 dB 3 8 3 8 1 4 SMD FBAR ACMD 7402 TR1G F100 FILTER SAW SFSY0018301...

Page 154: ... 16W J 1005 R TP MCR01MZSJ000 R114 RES CHIP MAKER ERHZ0000402 10 ohm 1 16W J 1005 R TP MCR01MZSJ100 R115 RES CHIP MAKER ERHZ0000203 10 Kohm 1 16W F 1005 R TP MCR01MZSF1002 R116 RES CHIP MAKER ERHZ0000402 10 ohm 1 16W J 1005 R TP MCR01MZSJ100 R117 RES CHIP MAKER ERHZ0000206 10 ohm 1 16W F 1005 R TP MCR01MZSF10R0 R118 RES CHIP MAKER ERHZ0000402 10 ohm 1 16W J 1005 R TP MCR01MZSJ100 R119 RES CHIP MAK...

Page 155: ...HIP MAKER ERHZ0000231 180 Kohm 1 16W F 1005 R TP MCR01MZSF1803 R417 RES CHIP MAKER ERHZ0000315 75 Kohm 1 16W F 1005 R TP MCR01MZSF7502 R418 RES CHIP MAKER ERHZ0000222 150 Kohm 1 16W F 1005 R TP MCR01MZSF1503 R419 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP MCR01MZSJ104 R420 RES CHIP MAKER ERHZ0000406 100 Kohm 1 16W J 1005 R TP MCR01MZSJ104 R421 RES CHIP MAKER ERHZ0000401 0 ohm 1 16W J 10...

Page 156: ...505101V150FR VR609 VARISTOR SEVY0003601 5 6 V SMD 100pF 1005 ICVL0505101V150FR VR610 VARISTOR SEVY0003601 5 6 V SMD 100pF 1005 ICVL0505101V150FR VR612 VARISTOR SEVY0003601 5 6 V SMD 100pF 1005 ICVL0505101V150FR X100 VCTCXO EXSK0004802 19 2 MHz 1 5 PPM 10 pF SMD 3 2 2 5 1 2 19 2 Mhz 1 5PPM 2 8V 3 2 2 5 1 2 SMD P TP ERF3003E X200 RESONATOR EXRY0002401 48 MHz 5 14 pF SMD 2 0 1 2 0 65 Outgoing Toleran...

Page 157: ...TP White LED LEWW S14 LED514 DIODE LED CHIP EDLH0005901 White 1608 R TP White LED LEWW S14 LED515 DIODE LED CHIP EDLH0005901 White 1608 R TP White LED LEWW S14 R500 RES CHIP MAKER ERHZ0000527 200 ohm 1 6W J 1005 R TP MCR01MZSJ201 R501 RES CHIP MAKER ERHZ0000527 200 ohm 1 6W J 1005 R TP MCR01MZSJ201 R502 RES CHIP MAKER ERHZ0000527 200 ohm 1 6W J 1005 R TP MCR01MZSJ201 R503 RES CHIP MAKER ERHZ000052...

Page 158: ...L0505101V150FR VR504 VARISTOR SEVY0003601 5 6 V SMD 100pF 1005 ICVL0505101V150FR VR505 VARISTOR SEVY0003601 5 6 V SMD 100pF 1005 ICVL0505101V150FR VR506 VARISTOR SEVY0003601 5 6 V SMD 100pF 1005 ICVL0505101V150FR VR507 VARISTOR SEVY0003601 5 6 V SMD 100pF 1005 ICVL0505101V150FR VR508 VARISTOR SEVY0003601 5 6 V SMD 100pF 1005 ICVL0505101V150FR VR509 VARISTOR SEVY0003601 5 6 V SMD 100pF 1005 ICVL050...

Page 159: ...Y0102003 POLYI 0 18 mm DOUBLE F MOD KEY SPCY0102003 SACE01 PCB ASSY FLEXIBLE SMT SACE0053401 SACE0053401 SACC00 PCB ASSY FLEXIBLE SMT BOTTOM SACC0032701 CON100 CONNECTOR BOARD TO BOARD ENBY0035901 40 PIN 0 4 mm ETC H 1 0 Plug GB042 40P H10 E3000 CON102 CONNECTOR BOARD TO BOARD ENBY0019101 24 PIN 0 4 mm STRAIGHT H1 5 MALE 14 5602 024 000 829H F100 FILTER EMI POWER SFEY0012501 SMD SMD 18 V 4ch EMI_E...

Page 160: ...4 Components Layout Z 3 X B O X C O M 159 ...

Page 161: ... C139 C140 C141 C142 C143 C144 C145 C146 C147 C148 C149 C150 C151 C152 C153 C154 C155 C156 C157 C158 C159 C160 C161 C162 C163 C164 C165 C166 C167 C168 C169 C170 C171 C172 C173 C174 C175 C176 C177 C178 C179 Q600 Q601 C180 C181 C182 C183 C184 C185 C186 L402 C187 L403 C188 C189 C190 L600 C191 R200 DP100 R201 DP101 R202 R203 R204 R205 R206 R207 R208 R209 Z 3 X B O X C O M ANT300 BT ANTENNA acs2450HBAC...

Page 162: ...500 SW520 R501 SW521 R502 SW522 R503 R504 R505 R506 R507 R508 R509 R510 R511 R512 R513 R515 U201 R516 R517 R518 R519 R520 R521 R522 R523 R524 R525 R526 R527 R529 U602 CON500 CON501 C309 C500 C501 C502 C503 C311 VR500 VR501 VR502 VR503 VR504 VR505 VR506 VR507 VR508 F600 VR509 F601 F602 F603 F604 F605 F606 F607 VR510 VR511 VR512 VR513 VR514 VR515 VR516 L400 L401 Z 3 X B O X C O M U201 MICROPHONE U60...

Page 163: ...VX8350 SPCY0098801 F_SUB_REV1 0 LGIT cam2 R100 R101 CON101 CON103 C100 C101 C104 Z 3 X B O X C O M Internal Use Only 162 ...

Page 164: ...F100 F101 F102 cam3 cam4 CON100 CON102 Z 3 X B O X C O M Internal Use Only 163 ...

Page 165: ...CON2 Z 3 X B O X C O M Internal Use Only 164 ...

Page 166: ...0_F_MOD SPCY0102003 R LGIT Rev1 2 U103 LED100 LED101 R101 R102 R103 U100 U101 U102 U103 LED100 LED101 SW100 SW102 SW106 R101 R102 R103 R104 R105 R106 VR100 VR101 VR108 CON1 Z 3 X B O X C O M Internal Use Only 165 ...

Page 167: ...CON103 Z 3 X B O X C O M Internal Use Only 166 ...

Page 168: ...VX8350 CAM_REV1 0 SPKY 0047501 SW100 CON102 Z 3 X B O X C O M Internal Use Only 167 ...

Page 169: ...CON103 Z 3 X B O X C O M Internal Use Only 168 ...

Page 170: ...VX8350 F_VOL REV1 0 SPKY 0047701 SW100 SW101 SW102 SW100 SW101 SW102 CON102 Z 3 X B O X C O M Internal Use Only 169 ...

Page 171: ...5 BGA Pin Map Z 3 X B O X C O M 170 ...

Page 172: ...M EUSY0170903 BOTTOM VIEW PIN A1 Corner AF AE AD AC AB AA Y W V U T R P N M L K J H G F E D C B A 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 USED Not USED Z 3 X B O X C O M Internal Use Only 171 ...

Page 173: ...1 2 3 4 5 6 7 8 9 10 11 12 A B C D E F G H J K L M N P Q T TOP VIEW PIN A1 Corner 2 U300 MCP EUSY0331001 USED Not USED Z 3 X B O X C O M Internal Use Only 172 ...

Page 174: ...TOP VIEW PIN A1 Corner 3 U400 Audio Amp EUSY0194501 A B C D E F 5 4 3 2 1 USED Not USED Z 3 X B O X C O M Internal Use Only 173 ...

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