GSM TELEPHONE

SGH-U900
GSM TELEPHONE 1. 2. 3. 4. 5. 6. 7. 8. 9.
CONTENTS Safety Precautions Specification Product Function Array course control Exploded View and Parts list MAIN Electrical Parts List Disassembly and Assembly Instructions Block Diagrams PCB Diagrams
10. Chart of Troubleshooting 11. Reference data
GSPN (Global Service Partner Network) Country Web Site North America service.samsungportal.com Latin America latin.samsungportal.com CIS cis.samsungportal.com Europe europe.samsungportal.com China china.samsungportal.com Asia asia.samsungportal.com Mideast & Africa mea.samsungportal.com
This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable International and/or domestic law.
Samsung Electronics Co.,Ltd.

2008. 04. Rev.1.0

1. Safety Precautions

1-1. Repair Precaution

Repair in Shield Box, during detailed tuning. Take specially care of tuning or test, because specipicty of cellular phone is sensitive for surrounding interference(RF noise). Be careful to use a kind of magnetic object or tool, because performance of parts is damaged by the influence of manetic force. Surely use a standard screwdriver when you disassemble this product, otherwise screw will be worn away. Use a thicken twisted wire when you measure level. A thicken twisted wire has low resistance, therefore error of measurement is few. Repair after separate Test Pack and Set because for short danger (for example an overcurrent and furious flames of parts etc) when you repair board in condition of connecting Test Pack and tuning on. Take specially care of soldering, because Land of PCB is small and weak in heat. Surely tune on/off while using AC power plug, because a repair of battery charger is dangerous when tuning ON/OFF PBA and Connector after disassembing charger. Don't use as you pleases after change other material than replacement registered on SEC System. Otherwise engineer in charge isn't charged with problem that you don't keep this rules.
SAMSUNG Proprietary-Contents may change without notice
This Document can not be used without Samsung's authorization

Safety Precautions

1-2. ESD(Electrostatically Sensitive Devices) Precaution
Several semiconductor may be damaged easilly by static electricity. Such parts are called by ESD(Electrostatically Sensitive Devices), for example IC,BGA chip etc. Read Precaution below. You can prevent from ESD damage by static electricity. Remove static electricity remained your body before you touch semiconductor or parts with semiconductor. There are ways that you touch an earthed place or wear static electricity prevention string on wrist. Use earthed soldering steel when you connect or disconnect ESD. Use soldering removing tool to break static electricity. , otherwise ESD will be damaged by static electricity. Don't unpack until you set up ESD on product. Because most of ESD are packed by box and aluminum plate to have conductive power,they are prevented from static electricity. You must maintain electric contact between ESD and place due to be set up until ESD is connected completely to the proper place or a circuit board.

2. Specification

2-1. GSM General Specification

EG SM 900 Phase 2

Fre q. Band [MH z ] Upl ink/Do wnl ink AR FC N r an ge T x/Rx s pa cing Mo d. Bit r ate/ Bit Period Time Slot Period/ Fra m e Peri od Modu latio n MS Power Po wer C lass Se nsitivity TDMA Mux Ce ll R adi us 8 80~ 9 25~ 0 ~& 9 75~ 45 MHz 27 0.833 Kbps 3.us 57 6.9 us 4.m s 0.3 G MSK 33 d Bm~5 dBm 5 pcl ~ 19 pcl - d Bm 5 Km

DCS1800

17 10~ 18 05~ 5 12~ 95 M Hz 27 0.833 Kbps 3.us 57 6.9 us 4.m s 0.3 GMSK 30 d Bm~0 dBm 0 pcl ~ 15 pcl -d Bm Km

PCS1900

18 50~ 19 30~ 5 12~ 80 MHz 27 0.833 Kbps 3.us 57 6.9 us 4.m s 0.3 G MSK 30 d Bm~0 dBm 0 pcl ~ 15 pcl - d Bm 8 -

WCDM A

192 0~ 211 0~ 2~ 190 MHz 3.84Mcp s/s 10ms Up Link:2BPSK Do wn L ink:QPSK MA X:24(+ 1.- 3) dBm MIN:<-5 0dBm CLASS 3 -106.7 dBm -

Specification

2-2. GSM TX power class
TX Power control level 19 GSMdBm 312 dBm 292 dBm 272 dBm 252 dBm 232 dBm 212 dBm 192 dBm 172 dBm 152 dBm 132 dBm 113 dBm 93 dBm 73 dBm 53 dBm TX Power control level DCSdBm 283 dBm 263 dBm 243 dBm 223 dBm 203 dBm 183 dBm 163 dBm 143 dBm 124 dBm 104 dBm 84 dBm 64 dBm 44 dBm 25 dBm 05 dBm TX Power control level PCSdBm 283 dBm 263 dBm 243 dBm 223 dBm 203 dBm 183 dBm 163 dBm 143 dBm 124 dBm 104 dBm 84 dBm 64 dBm 44 dBm 25 dBm 05 dBm

3. Product Function

Main Function
HSDPA 7.2Mbps 5M AF CMOS Camera Music Player Image editor Bluetooth USB 2.0 Highspeed DaCP (Dynamic adaptive Control Panel) UCS (Use Changed Graphic interface)

4. Array course control

TEST JIG BOX (GH80-03308A)
TEST CABLE (0.4M:GH39-00886A/1.5M:GH68-00890A)

RF CABLE (GH39-00397A)

Array course control

Software Downloading

4-1. Downloading Binary Files A boot file folder and five binary files for downloading SGH-U900 File Boot folder amss_compressed.bin Rsrc_U900_Open_Europe_Common.rc1 Rsrc2_U900(Low/Mid).rc2 FactoryFs_U900_Open_Europe_Common.ffs Comments Initial booting files Modem binary for common function Application files Power on/off animation files Default file system for initial production
4-2. Pre-requsite for Downloading Downloader Program(Multiloader V5.33.exe) SGH-U900 Mobile Phone Data Cable Binary files
4-3. S/W Downloader Program 1. Load the binary download program by executing the "Multiloader V5.33.exe".
[Program main window] 2. Click "MSM6275/MSM6280" to select baseband chip version of SGH-U900. Click "Full Download" to download binary files.
3. Click Boot button to load boot folder. Select binary folder and boot folder(BOOT_FILES). Click "(OK)".
If the previous processes were successful, you can find the condition as below.
4. Click AMSS button to load "amss_compressed.bin" file. Select "amss_compressed.bin" file and click "(OPEN)"

Click Rsrc1 button to load "Rsrc_U900_Open_Europe_Common.rc1" file. Select "Rsrc_U900_Open_Europe_Common.rc1" file and click "(OPEN)"
Click Rsrc2 button to load "Rsrc2_U900(Low).rc2" file. Select "Rsrc2_U900(Low).rc2" file and click "(OPEN)" Click Factory FS button to load "FactoryFs_U900_Open_Europe_Common.ffs" file. Select "FactoryFs_U900_Open_Europe_Common.ffs" file and click "(OPEN)"
5. If 3 and 4 processes were successful, you can find the condition as below. All files which compose the binary file are loaded. Don't need to click FOTA and ETC. Two buttons are not necessary.
6. Connect SGH-U900 mobile phone to computer via data cable. And click "Port Search" button to examine the connection condition. If the connection condition were successful, you can find the message below. Eight connections are possible at the same time.
7. If all connections are ready, click "Download" to start downloading.
Process success message is "All is complete[XXX.Xs]".
8. Recommedations Don't touch the mobile phone while downloading to prevent disconnecting. Disconnection while downloading is critical to phone condition. Main PBA would be damaged by disconnection while downloading. If all files are downloaded, it is recommended to do full reset. Full reset : *2767*3855#
5. Exploded View and Parts List
5-1. Cellular phone Exploded View

QFR01 QFU01

QKP02 QME03

QCR58 QMO01

QAN02 QSH01

QSP01 QCA01 QCA02

QCK01 QSD01

QVO01 QRF03

QCR67 QRE04 QBA01 QCR58
Exploded View and Parts List
5-2. Cellular phone Parts list
Design LOC QAN02 QBA00 QBA01 QCA01 QCA02 QCR12 QCR58 QCR67 QFR01 QLC01 QMO01 QMP01 QPC01 QRE04 QSH01 QSH02 QSP01 QFL01 QHI01 QHI15 QFU01 QFU02 QFU03 QFU04 QKP02 QME03 QMW01 QRE01 QCK01 QRF03 QSD01 QVO01 Discription INTENNA-SGHU900 ASSY CASE-BATT COVER SUS INNER BATTERY PACK-880MAH , BL CAMERA MODULE-SGHU900 5M CAMERA MODULE-SGHU900 CIF SCREW-MACHINE SCREW-MACHINE SCREW-MACHINE ASSY CASE-FRONT ELA UNIT-SGHU900 LCD HOT BAR A MOTOR LINEAR VIBRATION-SGHU900 PBA MAIN-SGHU900 MEA-SLIDE FPCB KIT ASSY CASE-REAR DECO ASSY COVER-IPR SHIELD REAR ASSY COVER-SHIELD FRONT UNIT-SGHU900 SPEAKER MODULE ASSY CASE-SLIDE LOWER ASSY HINGE-SLIDE ASSY CASE-MIDDLE LINK UNIT ASSY CASE-SLIDE-UPPER ASSY ACCE-UPPER ASSY CASE-SLIDE UPPER SUS ASSY CASE-UPPER BTM ASSY KEYPAD-SUB KEY FPCB-SGHU900 TOUCH KEY ASSY COVER-MAIN WINDOW ASSY CASE-REAR ASSY KEY-CAMERA PMO COVER-EAR IF PMO COVER-MICRO SD ASSY KEY-VOLUME SEC CODE GH42-01494A GH98-07749A GH43-02666A GH59-05418A GH59-05431A 6001-001530 6001-001870 6001-002083 GH98-07407A GH96-03031A GH31-00414A GH92-04365A GH97-08787A GH98-08410A GH98-07766A GH98-08462A GH59-05419A GH98-07402A GH98-07403A GH98-08152A GH98-07713A GH98-07408A GH98-07748A GH98-07853A GH98-07409A GH59-05407A GH98-07400A GH98-07406A GH98-07411A GH72-46089A GH72-46090A GH98-07412A

6. MAIN Electrical Parts List
SEC CODE 0403-001547 0403-001547 0404-001153 0406-001190 0406-001239 0406-001254 0406-001254 0406-001254 0406-001254 0406-001254 0406-001254 0406-001303 0406-001303 0406-001304 0406-001304 0406-001304 0406-001304 0407-001002 0504-001113 0504-001151 1001-001336 1001-001410 1001-001410 1003-002047 1009-001035 1009-001035 1108-000143 1201-002195 1201-002304 1201-002461 1201-002570 1203-003664 1203-003674 1203-003769 1203-004252 1203-004518 1203-004778 Design LOC ZD601 ZD607 D700 ZD600 ZD608 ZD602 ZD604 ZD605 ZD606 ZD700 ZD701 ZD706 ZD707 ZD702 ZD703 ZD704 ZD705 D400 TR400 TR200 U700 U502 U503 U602 U701 U702 UME300 U500 U501 PAM200 PAM100 U603 U600 U601 U604 U401 U400 Discription DIODE-ZENER DIODE-ZENER DIODE-SCHOTTKY DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-TVS DIODE-ARRAY TR-DIGITAL TR-DIGITAL IC-ANALOG SWITCH IC-ANALOG SWITCH IC-ANALOG SWITCH IC-MOTOR DRIVER IC-HALL EFFECT S/W IC-HALL EFFECT S/W IC-MCP IC-AUDIO AMP IC-AUDIO AMP IC-POWER AMP IC-POWER AMP IC-MULTI REG. IC-DC/DC CONVERTER IC-POSI.FIXED REG. IC-POSI.FIXED REG. IC-BATTERY IC-POWER SUPERVISOR
STATUS SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SNA SA SA SA
Main Electrical Parts List
SEC CODE 1205-003216 1205-003341 1205-003360 1404-001224 1405-001082 1405-001110 1405-001133 1405-001177 1405-001177 1405-001183 1405-001183 1405-001183 1405-001221 1405-001221 1405-001221 1405-001221 1405-001221 1405-001221 1405-001221 2007-000138 2007-000138 2007-000138 2007-000138 2007-000138 2007-000138 2007-000138 2007-000138 2007-000138 2007-000140 2007-000140 2007-000140 2007-000144 2007-000148 2007-000148 2007-000148 2007-000148 2007-000148
Design LOC U100 U200 UCP300 VR300 VR700 VR403 VR402 VR400 VR401 VR717 VR720 VR727 VR701 VR702 VR703 VR704 VR705 VR725 VR726 R522 R523 R700 R701 R702 R704 R706 R708 R718 R209 R723 R724 R408 R315 R316 R319 R322 R425
Discription IC-TRANSCEIVER IC-TRANSCEIVER IC-MODEM THERMISTOR-NTC VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR VARISTOR R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP R-CHIP
STATUS SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA SA
SEC CODE 2007-000148 2007-000148 2007-000148 2007-000148 2007-000154 2007-000154 2007-000154 2007-000157 2007-000157 2007-000157 2007-000162 2007-000162 2007-000162 2007-000165 2007-000165 2007-000165 2007-000165 2007-000169 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000171 2007-000173 2007-000173

1) Detach REAR. Caution 1. Pull upper side of REAR to detach it.
1) Disjoint PBA. Caution 1. While checking the attachments, detach PBA carefully from set. 2. Do not force too much on Intenna and screw hole close to vibration motor.
1) Remove connector gasket tape. Caution 1. Remove connector gasket tape carefully. 2. Slight damage on SLIDE FPCB is not permitted. 1) Disjoint FRONT screws.
1) Separate FRONT from LCD ASS'Y. Caution 1. Down the FRONT and detach it. 1) Disjoint LOWER screw.
1) Separate LOWER. Caution 1. Lift bottom of LOWER about 1cm and stir slightly. 2. Detach the LOWER while SLIDE FPCB damaged. 1) Remove black tape. Caution 1. Remove the black tape carefully.
1) Disjoint TOUCH KEY FPCB. Caution 1. Open the connector and disjoint TOUCH KEY FPCB.
1) Disjoint camera part. Caution 1. Disjoint the CAMERA FPCB. 2. Disjoint speaker and CIF camera.
1) Disjoint SUB LCD HOOK. Caution 1. Lean LOWER BOTTOM to window side to disjoint it from LCD ASS'Y.
1) Separate LCD. Caution 1. Lift the upside of LCD first and lift LCD PBA next. 2. Because the FPCB between LCD and LCD PBA are easy to be torn, lift the LCD PBA with care.

7-2. Assembly

Lower Bottom
1) Put the lower bottom to right position. 1) Put the main LCD in window frame. Caution 1. First, put the main LCD part in window frame. Red dashed lines point to display part. Caution 1. Insert lower bottom to LCD ASS'Y. 2. First, match window side then lean toward PBA 3. Lean the lower bottom until it sound undertone.
Main LCD consists of display part and PBA part. side.
1) Assemble touch key FPCB to connector. Caution 1. Assemble touch key FPCB to connector (dashed line). 2. Locate connector so that white silk lines aligned.
1) Combine camera. Caution 1. Connect camera FPCB to connector(dashed line). 2. Keep white silk line aligned. 3. Assemble by CIF camera/speaker/5MEGA camera order.
1) Attach black tape like picture below. Caution 1. Make sure not to cross over base line above. 2. Attach black tape like that way.
1) Combine LOWER. Caution 1. Insert FPCB between LOWER hole. 2. Combine top position HOOK and lower position screw assembly part.
1) Contract LOWER screw. Caution 1. Confirm screw size. (1.4* 2.5mm) 2. Screw after dashed positions are matched.
1) Assemble FRONT. Caution 1. Insert SLIDE FPCB to dashed insertion hole like upper picture. 2. Insert FRONT lower RIB under hinge and match the six screw joint positions.
1) Screw six point to fix FRONT to LCD ASS'Y. Caution 1. Confirm screw size. (1.4* 2.5mm) 2. Screw 6 points.
1) Combine PBA. Caution 1. When slide is closed, combine connector to PBA. 2. Fold SLIDE FPCB connector like image.
1) Put PBA. 1) Attach connector gasket tape. Caution 1. Place the connector gasket tape aligned like picture. Caution 1. Open slide and place the PBA. 2. Combine left side HOOK. 3. Place the Vibration motor in PBA hole.

1) Combine REAR COVER. Caution 1. Combine both side HOOK from bottom.
1) Screw REAR COVER. Caution 1. Confirm screw size.(1.4* 3.5mm) 2. Screw 5 points.

8. Block Diagrams

HB_RF_OUT2 HB_RF_OUT3 HB_RF_OUT1

BPF BPF BPF BPF

Quadrature Upconverter LPF

TX_IP TX_IN TX_QP TX_QN

LB_RF_OUT1

LB_RF_OUT2

Quadrature Upconverter
RF_ON DAC_IRE F SBDT TCX O TCX O
Gain Ctl & Bias Circuits
LO Generation & Distribution LPF

VTUNE 2

TX_BIA
GCELL_IN GCELL_IN EGSM_INP EGSM_INN DCS_INP DCS_INN PCS_INP PCS_INN

PRX_IP

Quadrature Downconverter

LPF & DO Correction

PRX_IN
LPF & DO Correction Quadrature Downconverter

PRX_QP PRX_QN

WPRXHBP WPRXHBN WPRXLBP WPRXLBN
Quadrature Downconverter Quadrature Downconverter Quadrature Downconverter
To SSBI LO GEN & Dist

WPRXSE2_IN

WPRXSE1_IN

Power Detector

PWD_DET_IN

LPF PLL 2

ground slug

WPRXSE2_OUT

WB_MX_INN

WB_MX_INP

WPRXSE1_OUT

VTUNE2

Block Diagrams

SGH-U900 Block Diagram

RTC : 32.768MHz

PM6658

TCXO: 19.2MHz

MDDI Host

CAMERA PROCESSING

MDDI Client

DUAL MEMORY BUSES
UMTS,HSDPA GSM,GPRS, EGPRS Processor gpsOne processor Modem QDSP4000 BT processor

RTR6280

FLASH Touch_Key LDO

MSM6280

GRAPHICS

OpenGL ES 3D,2D

LO Generato Rx Demod

MOTOR DRIVE IC

PLL Inside
MPEG-4 H.263,H.264, WM,Real QDSP4000

Rx modulator

SWITCHPLEXER

ARM 926ejs with Jazelle

Rx ADCs (2)

LPF PLL LPF

SSBI Control Tx modulator

LO Generator

Duplexer
Equalizer Handset speaker Stereo headset Microphone
MP3,AAC, EVRC,QCELP, AMR,AMR-WB/+, CMX,MIDI

CONNECTIVITY

UART3/USIM Key pad I/F USB OTG

Tx DAC

SD/SDIO

Bluetooth IC (BCM2048)

SSBI Control

9. PCB Diagrams

PCB Diagrams
10. Flow Chart of Troubleshooting

10-1-1. Power ON

'Power On' does not work
Check the current consumption Yes Current consumption >= 100mA Yes Check the Vbat Voltage No Download again

Voltage >=3.3V Yes

Charge the Battery

No Pin#3 of D400 is high? Check D400
Check the PMIC output voltage (C419,C420,C422,C414, C426,C415)

Check U400

Check Pin#3 of TCX200 is 19.2MHz?
Check the clock generation circuit (related to TCX200)
Yes Check the initial operation
Flow Chart of Troubleshooting

PMIC & CHARGER PART

VRF_2.7V VRF_2.1V

VSD_2.8V

VMSMB_2.6V

VSIM_3.0V

VRF_2.1V

VTCXO_2.85V

VRF_2.85V

VMSMA_2.6V

VMSM_1.8V

VMSM_1.2V

VRF_2.7V

VBT_2.6V

VBAT VDD_GP VDD_MAIN VDD_MSM VDD_MSMC VDD_RF VDD_RUIM VDD_S23 VDD_SPKR VDD_WLAN VREG_5V VSW_5V
E1 B3 B2 H11 L5 B9 K10 L7 A4 A11 G1 F1
A7 B7 K3 L3 L1 L2 D7 H7 D6 H6 D5 H5 K2 B4 D4 H8 C11 E10 D10 B5 B6 A5 A6 D8 E4 E11 H10 B10 F11 G4 J1 J2 H2 F4 F2 H4 H1
MPP1|AMUX_IN1 MPP2|AMUX_IN2 AMUX_OUT
VREG_GP1 VREG_GP2 VREG_GP3
A3 A2 B1 L9 G11 K8 J11 K4 K5 A9 A10 A8 B8 L10 L8 L6 K7 K6 L402 A1 G2 B11 D1 D2 L11 K11 F8 G8 E8 J10 E2 C2 C1 K1 L4 C10 G10 F10 K9 R403 C432 VBAT VMSMB_2.6V OSC400
MPP3|VIB_DRV_N MPP4|LCD_DRV_N KPD_DRV_N MPP5|RUIM_M_RST MPP6|RUIM_RST MPP9|RUIM_M_CLK MPP10|RUIM_CLK MPP11|RUIM_M_IO MPP12|RUIM_IO MPP7|CBLPWR_N MPP8|REF_OUT OPT_1 OPT_2 REF_BYP REF_GND REF_ISET SPKR_IN_M SPKR_IN_P SPKR_OUT_M SPKR_OUT_P TCXO_EN_1 TCXO_EN_2 TCXO_IN TCXO_OUT_1 TCXO_OUT_2 TCXO_OUT_RF USB_DAT USB_D_M USB_D_P USB_ID USB_OE_N USB_OVP_G USB_SE0 USB_VBUS
VREG_MMC VREG_MSMA VREG_MSME VREG_MSMP VREG_MSMC VSW_MSMC VREG_RFRX1 VREG_RFRX2 VREG_RFTX VREG_RFUBM VREG_RUIM VREG_S2 VREG_S3 VSW_S2 VSW_S3 VREG_TCXO VREG_USB VREG_WLAN ISNS_M ISNS_P XTAL_IN XTAL_OUT SBCK SBDT|SSBI SBST VCOIN BAT_FET_N CHG_CTL_N VCHG HSET_BIAS KPD_PWR_N MSM_INT_N PON_RESET_N PS_HOLD SLEEP_CLK

L400 CIG21W4R7MNE

PM_SBDT
VEXT_5.0V C414 C424 C425 C426 C427 C428 C429

R405 R427

PM_SBST

6X6X1.2T

ON_SW PM_INT RST_N RTC_CLK

DPS_HOLD PHONE_DEBUG_ON

GND GND GND GND GND GND GND GND GND

DNC NC NC

1 C435 RC436 BAT400
E5 E6 E7 F5 F6 F7 G5 G6 G7

10-1-2. Charging Part

Initial Failure Yes

5.0V @ L601,C437 ?

Check the IFC600 (if it has some problem, it is to be replaced.)

U401 pin 5 = High?

Replace U401
No Check the Battery & TA Check the U400

VEXT_5.0V VBAT

MPZ1005S100CT
IFC600 1200-0020-05 RADIO_ANT R24 25

VUSB_5.0V VEXT_5.0V

VUSB_5.0V

R412 1

U401 CRDL 2 USB BAT 10 ICDL 9 GND 8 USBON 7 IMIN 6 GND 11 R414 ICHRG

TA_DET CHG_ING_N TA_EN

3 _PPR 4 _CHG 5 _EN

C438 C439 C437

10-1-3. Sim Part
"Insert SIM is displayed on the LCD Yes
Check the SIM connector's (SIM400) connection to SIM card
No Resolder or change SIM400
Check the voltage at pin#1 of SIM400 >= 3.0V ?

Check the U400

Is there any signals pin#2,#3,#4 of SIM600 ?

No Check the U400

Check the SIM Card
R421 SIM400 PM_SIM_RST PM_SIM_CLK

G G G G 14 13

PM_SIM_IO

10-1-4. Microphone Part

Microphone does not work Yes Is the assembled status of microphone O.K? Yes Check the reference voltage on mic path Yes No No Replace the Front Assy'

2.85V @ R504 ? Yes

Check the path around MIC bias circuit
No Is microphone ok? Yes END Check UCP300

C504 C510

MIC_OUT_P C514 C515
MIC_OUT_N C521 C516 R518 C522

10-1-5. Receiver Part

There is no sound from the Receiver Yes No Replace the Receiver
Is the terminal of Receiver O.K ?

Yes No Check UCP300

Is there any signals at R527 and R529?
Yes Pin#8 of U502 is Low ? No Check R530
Check SOC700 and Camera/SPK FPCB.

10-1-6. Speaker Part

There is no sound from the Speaker Yes Is the terminal of Speaker O.K ? No Replace the Speaker
Is there any signals at R505 and R508
Yes No Check the circuit around U501
Is there any signals at L500 and L501

Pin#8 of U502 is High?

Check R530

B1 VDD

A2 VSS VOM PVSS VOP A3 B3 C3

L500 AMP_SPK_N

SPK_OUT_P SPK_OUT_N

R505 R508

VIP VIM

C2 EN B2 PVDD NC NC

R509 R511

AMP_SPK_P

SPK_AMP_EN C508 R516 C507 TA500

R514 C509 R515

R522 SPK_N
AMP_SPK_N AMP_SPK_P 2 VCC

NC GND

VOICE_OUT_N

R530 SPK_SEL

VOICE_OUT_P

SPK_P C534

MLCD_BL TOUCH_IRQ
LCD_VSYNC_OUT NAND_WE_OUT LCD_RS_OUT LCD_DO(14) LCD_DO(12) LCD_DO(10) LCD_DO(8) LCD_DO(6) LCD_DO(4) LCD_DO(2) LCD_DO(0) NAND_RE_OUT FLASH_EN CAM_RST CAM_SCL CAM_HSYNC CAM_VSYNC CAM_D(6) CAM_D(4) CAM_D(2) CAM_D(0) SPK_P SPK_N

R713 R714

10-1-7. EARPHONE Part
There is no sound(VOICE) from the Earphone Yes No Is there any signals at C537 and C538 Yes No EAR_SEL (R532) is high? check the UCP300 check the UCP300
Yes No Check the U503 and around circuit
Is there any signals at L602 and L603
Yes Check the IFC600 or change the Ear MIC Yes
There is no sound(MUSIC) from the Earphone Yes No Is there any signals at C500 and C513 Yes No EAR_AMP_EN(Pin#16 of U500) is high? check the UCP300 check the UCP300
Check the U500 and around circuit

EAR_AMP_EN

EAR_OUT_L C500

_SHDN 16

INL+ 15

INL- 14

NC4 NC3 NC2 NC1

OUTL SVSS OUTR SVDD

INR+ INR-

R503 EAR_L R507 EAR_R

PVDD C1P PGND C1N

R513 C517 C518

EAR_OUT_R C513

EAR_OUT_R

TA501 R528

EAR_SEL

EAR_OUT_L C536
AUTO_PWR_J RXD_J TXD_J EAR_MIC_P EAR_MIC_N EAR_R EAR_L EAR_SW JACK_IN PHONE_DEBUG_ON TXD RXD AUTO_PWR USB_D_P USB_D_N VUSB_5.0V R610 R605 R606 R607 R608 R609 L602 L603

RADIO_ANT

IFC24 25

3 ZD600

4 ZD607 TA600 C606 C607 ZD601 TA601 C608

10-1-8. FM RADIO Part

FM Radio does not work Turn on the Radio. Yes
check the Voltage at C127 (2.6V) and C128 (2.6V) ?

No Check U400

Is there any signal at R620?
Check the Earphone and U100
Is there any signal at C123 and C125?

No Resolder the U100

Yes No Replace the UCP300

Check UCP300

1 OUT IN G 2 OUT G 5

ATT. 7.7dB R100 DPCS_TX_OUT R102 R103 UMTS_ANT
C107 GSM_RX_N C109 L102 39nH L103 GSM_RX_P L104 DCS_RX_N L105 L106 DCS_RX_P

PAM100 SKY77519-11

ANT_SEL1_N ANT_SEL0_N

MODE RSVD _TXEN VAPC

BS2 BS1

OUT IN G 2

29 GND

OUT 4 G 5

C111 ATT. 7.7dB GSM_TX_OUT

1 IN 5 F102 OUT G GG 4

C112 F103

1 IN G 2

C113 R105 VAPC C114 R106

OUT OUT G 5

L107 L109

PCS_RX_N

PCS_RX_P

R108 ANT_SEL2_N C115

TX_Q_P

TX_Q_N

C214 VRF_2.1V
VRF_2.1V C219 C224 C223 C225 close to pin68

DAC_REF

TX_I_N

TX_I_P

R205 UMTS_TX DPCS_TX_OUT GSM_TX_OUT

C228 VRF_2.7V C233 C227

C229 C235

ground

NC NC GND_SLUG TX_RBIAS DAC_IREF TX_QP TX_QN TX_IP TX_IN VDDA2 VDDA2 VDDA2 HB_RF_OUT3 HB_RF_OUT2 LB_RF_OUT2 HB_RF_OUT1 LB_RF_OUT1 VDDA2 VDDA1 PDET_IN

ground 17

C269 33PF

35 C238

RTR_PWR_DET

RTR_TCXO C239

C241 C245 C240 C244
C242 C246 RX_Q_P RX_Q_N RX_I_N RX_I_P
NC NC SBDT VDDA2 VDDA1 VDDM VTUNE2 VDDA2 RF_ON VDDA2 WB_MX_INP WB_MX_INM WPRXLBP WPRXLBM WPRXHBP WPRXHBM WPRXSE2_OUT
VDDA2 TCXO VDDA1 VDDA1 VTUNE1 VDDA1 VDDA2 NC NC VDDA1 PRX_QP PRX_QN PRX_IN PRX_IP NC NC NC

U200 RTR6280

8X8X0.9T
GCELL_INN GCELL_INP EGSM_INN EGSM_INP DCS_INN DCS_INP GPCS_INN GPCS_INP NC NC NC NC NC WPRXSE1 NC WPRXSE2 WPRXSE1_OUT
GSM_RX_N GSM_RX_P DCS_RX_N DCS_RX_P PCS_RX_N PCS_RX_P C247 VRF_2.1V
UMTS_RX C248 C249 L209 C252 FOUT 1 IN 4 OUT 2G G 5 UMTS_RX_N
R210 R211 C256 C257 TA201 C254 C260 C255 C261

TA200 C253 C259

UMTS_RX_P

VRF_2.7V C262

UMTS_RX_P UMTS_RX_N

C266 C267 C265

10-2-5. EGSM900 TX

TX Power is too Low!!

Band :GSM CELL POWER : -50dBm Tx Power : 5Level Channel : 62ch
TCXO CLOCK CHECK? 19.2MHz @ C231

YES NO

Check the Power @ Pin#55 of U200?

CHECK U200 and C225

YES NO Check the Attenuation Circuit ? CHECK R104, R107, R108
YES NO Check F102 ? F102 re-solder or change
YES Check the Power @Pin#8 of PAM100? YES NO Check RFS100? NO
PAM100 re-solder or change
RFS100 change or re-solder
YES Antenna re-solder or change
10-2-6. DCS1800/PCS1900 TX
Band :DCS/PCS CELL POWER : -50dBm TX Power is too Low!! Tx Power : 0Level Channel : 660ch

Check the Power @ Pin#56 of U200?

CHECK U200 and C223

YES NO Check the Attenuation Circuit ? YES Check the Power @Pin#8 of PAM100? YES NO Check RFS100? NO CHECK R100, R102, R103
Antenna re-solder or change

10-2-7. WCDMA2100 TX

Band :WCDMA TX Power is too Low!! CELL POWER : -50dBm DL Channel : 10700Ch UL Channel : 9750Ch Target Power : 24dBm TCXO CLOCK CHECK? 19.2MHz @ C231 NO TCX200, C231 re-solder or change
YES NO Check the Power @ Pin#59 of U200? CHECK U200 and C219
YES NO Check F200 ? F200 re-solder or change
YES NO Check PAM200? PAM200 re-solder or change

YES NO Check CPL200

CPL200 re-solder or change
YES NO Check DUP200? DUP200 re-solder or change
YES Check the Power @Pin#8 of PAM100? NO

YES NO Check RFS100?

TRC2 PAM_ON 2 BE1 EBCC200 VBAT

L201 C202 R215

R217 RTR_PWR_DET L202 UMTS_ANT R216 C203

VCCBIAS

IM VCC2L

NC NC GND

2 L204 R200 VMODE_EN 20 RFIN NC VMODE

UMTS_TX

1 IN 5
12 C204 10NF 16V L205 R201 C211 C205 4700NF 10V 2 ANT 5 TX DUP200 RX 7

G G G G G G

VCCVCC2 VCCRFOUT 9

CPL200

VREG NC 5

PAM200 RF3266

1 IN OUT 2 COUP 50OHM 4 3

L206 UMTS_RX C208

PWR_DET R204 C212

10-2-8. Bluetooth Part

Check the Connection Disable!

NO Check BT Activation?

Enable BT Function

YES NO CHECK U400

Check the Voltage @C116(1.5V), C127(2.6V) YES
NO Check the Clock @ C122 CHECK TCX200
YES NO Check BT ANT? ANT100 re-solder or change

Exchange BT Module

VBT_1.5V U100 BCM2048SKUFBG BT_PWDN BT_RST
A5 D5 B5 D6 H2 B4 VREGFM_DAC VREG_CTL VREG_BT RST_N RES LPOIN FMVCO_LP FMVCO_LN FMPLLCAP FM_CVAR FMRF_INN FMRF_INP RFIOP RFION XTALN XTALP AUDIOR AUDIOL AUDIOGND VDDO18 VDDO18 VDDO18 VDDRF VDDRF VDDR5V VDDR3V VDDLO VDDPLL VDDXO VDDOC1 VDDOC1 VDDOC1 VDDC VDDC VDDC VDDC VDDC VDDFM VDDFM VDDFM VDDFM VDDFM H10 GPIO0 H9 GPIO1 F10 GPIO2 G9 GPIO3 E6 GPIO4 G6 GPIO5 B8 GPIO6 D10 GPIO7 A_GPIO0 A_GPIO1 A_GPIO2 A_GPIO3 A_GPIO4 A_GPIO5 A_GPIO6 A_GPIO7 UART_TXD UART_RXD UART_CTS_N UART_RTS_N TM0 TM1 TM2 TM3 B9 C10 B10 A10 E9 K9 B7 E7 K10 J9 F7 C9 K7 J7 F6 J6

C116 RTC_CLK

L110 C117
L111 F104 ROUT IN 4 GNDGND C124 BT_TCXO

K3 K2 K5 K6

RADIO_L RADIO_R

1000nF J5

K8 A8 F9 E2 E1 A6 B6 J1 K1 J3 E10 J8 A9 G5 D9 G7 A7 J10 B1 B3 J4 K4 A4
VBT_1.5V C128 C127 C129 VBT_1.5V L113
B2 VSS C2 VSS D2 VSS D7 VSS E4 VSS E5 VSS F2 VSS F4 VSS F5 VSS G2 VSS G4 VSS G10 VSS H1 VSS J2 VSS NC NC 1 2

11. Reference data

11-1. Reference Abbreviate
AAC: Advanced Audio Coding. AVC : Advanced Video Coding. BER : Bit Error Rate BPSK: Binary Phase Shift Keying CA : Conditional Access CDM : Code Division Multiplexing C/I : Carrier to Interference DMB : Digital Multimedia Broadcasting EN : European Standard ES : Elementary Stream ETSI: European Telecommunications Standards Institute MPEG: Moving Picture Experts Group PN : Pseudo-random Noise PS : Pilot Symbol QPSK: Quadrature Phase Shift Keying RS : Reed-Solomon SI : Service Information TDM : Time Division Multiplexing TS : Transport Stream