Samsung GT-B7620 Service Manual Download Page 55

Page: 55 / 82

SAMSUNG Proprietary-Contents may change without notice

Flow Chart of Troubleshooting

9-40

This Document can not be used without Samsung's authorization

9-24. WCDMA 2100 Transmitter

TX ON

(UE Target Power 24 dBm)

MOD101 Pin 20

>= 15dBm

F107 Pin 6

>= 15dBm

END

Resolder RFS101,C1024,L101

Resolder or change

MOD101

MOD101 Pin 2

>= 15dBm

Check MOD101

Truth Table

Pin 7 : LOW

Pin 6 : LOW

Pin 8 : LOW

Pin 9 : HIGH

Yes

YES

Resolder C1010,C1011,L127

Check U101

Resolder or change F107,C1017,C1019

,C1020

U104 Pin 9

>= 15dBm

U104 Pin 2

>= 15dBm

U101 Pin 59

>= 15dBm

Yes

Resolder or change

U104

Resolder or change F106

Yes

Summary of Contents for GT-B7620

Page 1: ... 2 Specification 3 Product Function 4 Array course control 5 Exploded View and Parts list 6 MAIN Electrical Parts List 7 Block Diagrams 8 PCB Diagrams 9 Chart of Troubleshooting 10 Reference data 11 Disassembly and Assembly Instructions GSM TELEPHONE CONTENTS ...

Page 2: ...03 TOUCH PANEL GT B7620 TMO_BLK GH59 07998A QMP01 A S ASSY GT B7620 MAIN PBA SVC GH82 04104A QMP02 ASSY PBA SUB GT B7620 GH92 06624A QPC01 ASSY ETC SLIDE FPCB GT B7620 GH59 07997A QSH01 ASSY COVER SHIELD CAN GH98 13674A QSP01 MODULE SPEAKER MOT GT B7620 GH59 07987A QST01 ASSY STYLUS PEN GH98 15065A QVK01 KEY FPCB SIDE KEY GT B7620 GH59 07991A QVK02 KEY FPCB CAM KEY GT B7620 GH59 07996A QFL01 ASSY ...

Page 3: ...SI1012R 0505 002088 Q301 2SK3541 0601 002268 LED801 LED802 LED803 AEOWU VOYY 0601 002268 LED804 AEOWU VOYY 0801 003016 U301 U412 U707 NC7SV08L6X 0801 003065 U302 TC7SH04FS 0801 003130 U305 NC7SV17L6X 0801 003136 U708 NC7SZ126L6X 0801 003200 U310 NC7SZ00L6X 0801 003213 U410 TC7SG08AFS TPL3 0801 003265 U303 74AUP1G74GM 0902 002440 UAP601 SC36410A8N A040 1001 001461 U309 NLAST9431 1001 001481 U702 U7...

Page 4: ... T 1203 005783 U401 MAX8845YETC 1204 003026 U201 SI4709 B GMR 1205 003297 U101 RTR6285 1205 003467 U308 AAT4285IJS 3 T1 1205 003488 U502 AK4671EG 1205 003582 UCP301 MSM6290 1209 001823 U404 KXSD9 2042 1209 001872 U403 AK8973B 1404 001221 TH601 NCP15WB473J04RC 1405 001177 V601 V602 V603 V604 AVLC 5S 01 015 1405 001177 V605 V606 AVLC 5S 01 015 1405 001183 VR701 VR702 ZD501 AVLC5S01033 1405 001183 ZD...

Page 5: ...646 R704 R705 ERJ1GEJ101C 2007 008045 R713 R717 R813 R817 ERJ1GEJ101C 2007 008045 R818 ERJ1GEJ101C 2007 008047 C190 C191 RK73B1HTTB181J 2007 008049 R310 MCR006YZPJ202 2007 008052 R413 R414 R502 R613 ERJ1GENJ472X 2007 008052 R621 R622 R631 R632 ERJ1GENJ472X 2007 008052 R638 R639 ERJ1GENJ472X 2007 008055 R208 R313 R316 R325 ERJ1GENJ104X 2007 008055 R404 R405 R420 R421 ERJ1GENJ104X 2007 008055 R423 R...

Page 6: ...2R2C 2007 008798 R633 R634 MCR006YZPJ153 2007 008806 R327 RC0603J510CS 2007 009084 R319 R435 MCR006YZPJ105 2007 009115 C189 R314 RC0603J240CS 2007 009154 R519 R520 RMC1 20 120JTP 2007 009155 R415 R416 R708 MCR006YZPJ474 2007 009157 R318 R429 R624 R626 MCR006YZPF1003 2007 009157 R629 MCR006YZPF1003 2007 009158 R402 MCR006MZPF1503 2007 009165 R107 R109 R110 R112 ERJ2RKF24R9X 2007 009168 R648 R802 MC...

Page 7: ...Z01E 2203 002668 C1001 C1005CG1H0R5BT 2203 002709 C627 C1005Y5V1C104ZT 2203 005138 C632 04025C182KAT2A 2203 005234 L204 GRP1555C1H1R2CZ01E 2203 005281 C1019 C143 C146 C198 GRP1555C1H1R5BZ01E 2203 005288 C1020 C110 GRP1555C1H1R0BZ01E 2203 005444 C224 GRP1555C1H3R0B 2203 005446 C180 GRP1555C1H2R7BZ01E 2203 005682 C1012 C1013 C112 GRP0335C1E330JD01E 2203 005682 C113 C115 C126 C167 GRP0335C1E330JD01E ...

Page 8: ...J103KA01E 2203 006194 C332 C333 C346 C349 GRP033R70J103KA01E 2203 006194 C514 C626 GRP033R70J103KA01E 2203 006260 C536 C537 GRM155R61A224KE19E 2203 006305 C204 C732 C733 C734 CM03CG100J25AH 2203 006305 C735 CM03CG100J25AH 2203 006324 C215 GRM188R61A225KE19D 2203 006379 C509 GRP033R70J472KA01 2203 006399 C302 C305 C308 C316 GRM155R60J105KE19D 2203 006399 C318 C319 C320 C322 GRM155R60J105KE19D 2203 ...

Page 9: ...X5R105K10AH 2203 006562 C444 C445 C449 C450 CV05X5R105K10AH 2203 006562 C456 C457 C459 C461 CV05X5R105K10AH 2203 006562 C463 C525 C527 C530 CV05X5R105K10AH 2203 006562 C538 C539 C540 C801 CV05X5R105K10AH 2203 006562 C802 CV05X5R105K10AH 2203 006642 C1009 C151 C179 GRM033R71E331KA01D 2203 006665 C217 GRM0335C1E2R2CD01D 2203 006668 C327 GRM033R61A222K 2203 006674 L102 L103 CL03C3R3BA3GNNC 2203 00670...

Page 10: ... C709 C710 C711 CL03A105KQ3CSNH 2203 007369 C713 CL03A105KQ3CSNH 2203 007393 C721 CL05A475KP5NRNC 2404 001339 TA301 TEESVJ1A475M8R 2404 001381 TA501 F981A106MMA 2404 001474 TA503 TA801 F951A476MPALZTQ2 2404 001557 TA502 TA504 TLCL336M006RTA 2703 001178 L127 LL1005 FH3N3S 2703 001733 L123 LL1005 FH8N2J 2703 001750 C183 LL1005 FH2N2S 2703 001751 L115 LL1005 FH3N9S 2703 002176 L126 CIH05T2N7SNC 2703 ...

Page 11: ...804 001700 OSC302 SG 3040LC 32 768KHZ 2804 001704 OSC603 SG 8002CESC 48MHZ 50PPM 2804 001772 OSC201 SQ2O03840KEINC 2804 001796 OSC501 CSC3M192000EEVRS00 2809 001341 OSC301 TG 5005CE 33G 19 2MHZ 2901 001413 F701 F702 F703 F704 ICVE10184E070R101FR 2901 001413 F705 F706 F707 ICVE10184E070R101FR 2901 001469 F709 F710 AVRC 18S 03Q 007 010R 2904 001739 F104 FAR F6KA 1G8800 L4AFH 2904 001759 F201 FAR F6K...

Page 12: ...1 006808 BTC801 KQ03SB1 3R 3711 006865 HEA702 AXT634124AW1 3711 007073 SOC100 AXT680124AW1 3711 007172 HEA501 HEA601 AXE610124 3711 007173 HEA602 AXE612124 3722 002840 IFC801 HY07 AB0700 4202 001463 ANT203 ODBTP3015 4302 001237 BAT401 ML414RU TT49 TP1S 4709 001758 U202 SWB T30 GH71 08731A ANT101 ANT102 ANT201 HJ ICT 05 GH71 08731A ANT202 HJ ICT 05 RES Z0603 SH R308 R309 R320 R331 ORT P RES Z0603 S...

Page 13: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization 7 Block Diagrams 7 1 7 1 Main Block Diagram ...

Page 14: ...SAMSUNG Proprietary Contents may change without notice 8 PCB Diagrams 8 1 This Document can not be used without Samsung s authorization 3722 002840 HY07 AB0700 IFC801 ...

Page 15: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 8 2 This Document can not be used without Samsung s authorization ...

Page 16: ...be used without Samsung s authorization 9 1 Power On Power On No Yes No Binary Download Check the battery No TA801 3 1V Yes C451 3 0V No Check the C451 TA801 D401 R426 R427 R428 Yes Yes Check the initial operation END Check consumption 100mA Check the current consumption Check the voltage Check the voltage of C451 ...

Page 17: ...C451 5 0 0 1 C443 VMOVI_3V C447 C456 LX3 IN3 G6 PWRHOLD BUCK3 F4 VCC_COIN F5 LDO1 F6 IN2 G1 LX2 PGND2 G3 PGND3 G4 LX1 BUCK1 E2 PWRON RSO AGND2 E5 LDO9 E6 IN1 F1 BUCK2 F2 ONO IN6 C6 PGND1 D1 SET3 SET2 SET1 AGND1 D5 LDO8 D6 SRAD PWREN MR LDO7 B6 IN5 C1 SDA SCL LBOB LDO3 A1 IN4 A2 LDO4 A3 LDO5 A4 REFBP LDO6 A6 LDO2 B1 JIGON U408 VKEY_LED_3 3V C444 VALIVE_1 2V_S3C VSD_VCC_3V VOTGI_1 2V_S3C VOTG_3 3V_S...

Page 18: ...ument can not be used without Samsung s authorization 9 2 initial Initail Failure Yes No Check OSC302 Check OSC601 No C629 12MHz Yes Sound operation OK No Check Speaker part Yes END TP_PS_HOLD 3 0V No Check UAP601 U410 Yes Check the Frequency R429 32 768KHz Yes LCD Display OK No Check LCD part Yes ...

Page 19: ...A 1 3 INB OUTY 4 VCC 5 U410 R436 AP_PS_HOLD PS_HOLD AP_N_RST_IN VCOIN_3 0V 11 C N 7 OUT 12 VCC 1 VIO G 6 2 C N C N 3 4 C N 5 C N C N 8 9 C N C N 10 OSC302 C342 R635 C629 C628 4 3 1 1 0 6 C S O 2 XTAL_12MHZ_OUT XTAL_12MHZ_IN ...

Page 20: ...leshooting 9 5 This Document can not be used without Samsung s authorization 9 3 T flash Initail Failure No No Check T SIM801 ZD802 ZD803 T Flash Breakdown Yes Change T Flash No There is any signal at Pin 6 in T SIM801 Yes NG Voltage of C458 3V Yes Check U411 Replace T SIM801 ...

Page 21: ... N G 1 O I 1 2 O I 4 3 3 O I 4 O I 5 R805 VTFLASH_3V C802 VCC_3 0V_PDA R803 R801 VREG_USIM_3 0V 10 17 SW 9 VCC VDD 4 VPP 14 VSS 6 22 23 NC NC 24 25 NC NC 26 27 NC RESERVED 12 RESERVED 16 RST NC 28 29 NC NC 30 31 NC NC 32 NC 20 21 NC NC 3 CMD COMMON 18 7 DAT0 DAT1 8 1 DAT2 13 GND 15 I O 19 NC T SIM801 CD DAT3 2 5 CLK 11 CLK C801 SD_CLKOUT SD_DAT1_OUT SIM_RST SIM_CLK SIM_IO SD_DET SD_DAT2_OUT SD_DAT...

Page 22: ...ubleshooting 9 7 This Document can not be used without Samsung s authorization 9 4 SIM Insert SIM card No No Check T SIM801 ZD802 ZD803 SIM CARD Breakdown Yes Change SIM CARD No There is any signal at Pin 11 in T SIM801 Yes Voltage of C403 3V Yes Check U402 Replace T SIM801 ...

Page 23: ...O I R806 R802 R804 6 5 O I ZD803 2 D N G 1 O I 1 2 O I 4 3 3 O I 4 O I 5 R805 VTFLASH_3V C802 VCC_3 0V_PDA R803 R801 VREG_USIM_3 0V 10 17 SW 9 VCC VDD 4 VPP 14 VSS 6 22 23 NC NC 24 25 NC NC 26 27 NC RESERVED 12 RESERVED 16 RST NC 28 29 NC NC 30 31 NC NC 32 NC 20 21 NC NC 3 CMD COMMON 18 7 DAT0 DAT1 8 1 DAT2 13 GND 15 I O 19 NC T SIM801 CD DAT3 2 5 CLK 11 CLK C801 SD_CLKOUT SD_DAT1_OUT SIM_RST SIM_...

Page 24: ...ent can not be used without Samsung s authorization 9 5 Charging Abnormal Charging operation Yes Check IFC801 s pin 1 is about 5V when charging No Check the TA Yes END Check U401 s pin 11 is about 5V when charging Check the U802 No Yes Check U401 s pin 4 11 is LOW when charging Yes No Check the U401 ...

Page 25: ... VBAT 14 NC NC 15 12 T U O E F A S 1 SETI 7 _ABO G H C _ 10 4 N E _ 6 K O P _ ABI 3 BATT 8 2 DETBAT 5 D N G GND 13 N I 11 MIN 9 U401 VOVP_5 0V TA_ISET VF CHG_EN CHG_ING_N CHG 1 2 3 9 8 7 12 11 10 4 5 6 SAFEOUT IN MIN BATT ABO DETBAT ABI EN GND POK SETI MAX8845Z ...

Page 26: ... This Document can not be used without Samsung s authorization 9 6 Bluetooth Check the connection disable Yes Check BT Activation No Enable BT Function Yes END Check U202 s pin 15 Vbat pin 39 1 8V Check the U202 No Yes Check BT ANT Yes No ANT203 reassemble change Exchange BT Module U202 Yes ...

Page 27: ... 28 AUD_IN 29 AUD_FSYNC 3 SLOW_CLK_IN 30 WL_RS232_RX 31 WL_RS232_TX 32 SDIO_D3 SPI_CS 33 SDIO_D2 34 NC 20 WLAN_EN 1 2 D N G 2 2 D N G 3 2 T N A 4 2 D N G 25 BT_EN 26 AUD_CLK 27 BT_DBG 13 NC 4 1 D N G 5 1 T A B V 16 WLAN_DBG 17 WLAN_IRQ 18 CLK_REQ 9 1 D N G 2 U202 1 NC 10 HCI_RX 11 HCI_CTS 12 VCC_1 8V_PDA VBAT C219 TP221 C217 R208 C215 TP218 R207 TP219 TP213 C216 C214 WLAN_SDIO_D1 WLAN_SDIO_D2 WLAN...

Page 28: ...low Chart of Troubleshooting 9 13 This Document can not be used without Samsung s authorization VBAT CE 3 5 D N G 2 GND VDD 4 VOUT 1 U204 VCOMBO_1 8V C223 C222 CLK_REQ VCOMBO_1 8V VCOMBO_1 8V R206 C211 C212 OSC201 GND 2 OUT 3 1 SW 4 VDD R205 COMBO_38 4M_CLK ...

Page 29: ...msung s authorization 9 7 RECEIVER Working Recieve does not work Is there any signal at C518 C522 Check UCP301 No Is there any siganl at C730 C731 Check U502 No Is the assemble status if slide FPCB connector OK Replace slide FPCB connector No Is the assemble status of receiver OK Resolder or change receiver No Yes END Yes Yes Yes ...

Page 30: ...1 E RIN4 IN3 B4 LIN4 IN4 B5 LOUT3 LOP B6 ROUT1 RCN B7 1 S S V 8 B B9 LOUT2 SAIN3 C1 SAIN2 C2 RIN4 IN4 A5 ROUT3 LON A6 LOUT1 RCP A7 D D V A 8 A TEST A9 B1 MPWR RIN1 IN1 B2 RIN2 IN2 B3 C N 1 C N 2 MDT A1 LIN1 IN1 A2 LIN2 IN2 A3 LIN3 IN3 A4 BT_PCM30_CLK CODEC_OUT_R CODEC_OUT_L RCV_N CODEC_MIC MIC_N RCV_P CODEC_MIC MIC_P U502 BT_PCM30_DI AP_I2S_CLK AP_I2S_SYNC BT_PCM30_SYNC AUDIO_SDA AUDIO_SCL CLK19 2...

Page 31: ... can not be used without Samsung s authorization 9 8 SPEAKER Working Speaker does not work Is the assemble ststus of speaker module OK Replace speaker module connector or Change speaker module No Yes Is there any signal at C534 C535 Check U502 No Yes Is there ant signal at C543 C544 Check U503 No Yes END ...

Page 32: ...rization C538 SCL SDA B3 D D V 1 B 3 A S S V C530 NC NC 2 OUT B5 OUT D5 D N G P 4 C 5 C D D V P RXIN B4 D4 RXIN C3 C1P D N G 3 D HPL A2 A1 HPR D2 INA1 D1 INA2 C2 INB1 C1 INB2 1 U503 BIAS B2 C1N A4 A5 R519 R517 C539 C543 C537 C535 C534 C536 C544 C542 C541 C540 TA503 C529 AUDIO_SCL AUDIO_SDA SPK_N SPK_P EARSPK_R EARSPK_L CODEC_OUT_L CODEC_OUT_R ...

Page 33: ... 9 MIC Working Mic does not work Is there ant signal at C526 Replace slide FPCB connector No Yes Is there ant signal at C526 Is there ant signal at C526 Yes No No Replace sub key mic FPCB connector Yes The voltage of R513 is about 1 6V No Check the path around MIC bias circuit Yes Is there any signal at R501 R505 No Check U502 Yes END Change MIC module ...

Page 34: ... notice Flow Chart of Troubleshooting 9 19 This Document can not be used without Samsung s authorization TA502 R514 C519 R513 ZD502 ZD501 C527 R509 C525 C526 MIC_P MIC_N M_MIC_P M_MIC_N C506 C502 C513 R501 C505 R505 CP_MIC CP_MIC CODEC_MIC CODEC_MIC ...

Page 35: ...0 This Document can not be used without Samsung s authorization 9 10 Earphone Speaker does not work Is the condition if IFC800 OK Replace or chagne IFC800 No Yes Does Mic of headset work Check mic path and bias circuit No Yes Does ear phone if headset work Check ear speaker path No Yes END ...

Page 36: ...BOOT E4 JIG 5 E D N G C1 DM_HOST C2 I2C_SCL C3 V_AUDIO_L C4 AUDIO_R C5 DP_CON 1 D T A B V D2 ID_BYPASS D3 V_AUDIO_R A3 CHG_DET 4 A T U O _ S U B V 5 A N I _ S U B V B1 DP_HOST B2 I2C_SDA B3 AUDIO_L B4 MIC B5 DM_CON U802 C N 1 C N 2 A1 INTB 2 A O I D D V C806 VBAT L809 R815 1 3 2 Q801 C804 TP801 NC 11 12 NC NC 13 6 S1 S2 7 1 1 2 2 3 3 4 4 5 5 8 NC NC 9 10 NC IFC801 VTA_5 0V 0603 L812 EARSPK_L EARSP...

Page 37: ...y Yes Yes Yes Yes Yes No Yes Yes No No END Change camera Key Change Hold Key Volume Key Breakdown Change volume key Yes Camera Key FPCB Breakdown Volume Key NG No Camera Key NG Yes No Hold key NG Yes No Hold Key Breakdown Power Key NG Change Key Power Key Breakdown Qwerty Key NG Domesheet Breakdown Change Domesheet check the element related especially register in key colume lines ...

Page 38: ...t can not be used without Samsung s authorization 9 12 5M Camera part Yes Re connect the camera FPCB Check camera FPCB and connector Yes C712 1 2V C708 3 0V C713 1 8V C709 2 8V No Check U705 Yes END 5M Camera Function does not work No Check the R711 R712 No Check Mclk Pclk Yes Replace the New Camera Yes ...

Page 39: ...4 D IDSEL C2 B3 U705 C712 VCAM_CORE_1 2V C706 VCAM_DVDD_1 8V VCAM_SVDD_1 8V L701 VCAM_HOST_3 0V FM_SDA CAM_PWR_EN FM_SCL VCAM_SVDD_1 8V R711 C721 VCAM_DVDD_1 8V VCAM_AF_2 8V 6 6 7 7 8 8 9 9 NC 35 36 NC 37 NCNC 38 3 3 30 30 31 31 32 32 33 33 34 34 4 4 5 5 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 15 15 16 16 17 17 18 18 19 19 2 2 20 20 21 21 1 1 10 10 11 11 12 12 13 13 14 14 HEA702 VCAM_AVDD_...

Page 40: ... without Samsung s authorization 9 13 CIF Camera part Yes Re connect the slide FPCB Check camera FPCB and connector Yes Check camera FPCB and connector No Re connect the camera FPCB Yes END CIF Camera Function does not work No C104 1 8V C105 3 0V No Check U101 Yes Replace the New Camera Yes No Replace the New slide FPCB ...

Page 41: ...5 U101 VCIF_IO_3 0V VBAT C103 C104 VCIF_DVDD_1 8V R104 CAM_PWR_EN CAM_PWR_EN 4 2 C N C N 5 2 C N 6 2 3 3 4 4 5 5 6 6 7 7 8 8 9 9 C N 3 2 15 16 16 17 17 18 18 19 19 2 2 20 20 21 21 22 22 HEA100 1 1 10 10 11 11 12 12 13 13 14 14 15 VCIF_AVDD_3 0V VCIF_IO_3 0V VCIF_DVDD_1 8V CAM_D 1 CAM_PCLK CAM_D 0 CAM_MCLK CAM_D 5 CAM_D 3 CAM_D 6 CAM_D 7 CAM_D 2 CAM_SCL CAM_SDA CAM_CIF_RST_n CAM_HSYNC CAM_VSYNC CAM...

Page 42: ...be used without Samsung s authorization 9 14 GPS part Check the function enable Yes Check GPS activation Enable GPS funtion No Yes Check the Voltage 2 7V L202 No Check L202 L203 F202 Check the Voltage 2 7V R202 Yes Check MSM6290 No Yes Check the function after Changing GPS LNA F202 No Resolder error parts Yes END ...

Page 43: ... without Samsung s authorization L206 C204 D N G 6 RF_IN 1 2 D S D D V 5 F202 FILT_OUT 4 3 D N G VREG_RFRX2_2 7V L202 C206 C220 ANT202 1 1 2 2 R202 1 2 2 ANT201 1 C210 R203 2 G 3 G 5 G IN 1 OUT 4 F201 C208 L203 RX_GPS GLNA_ON ANT201 ANT202 4 0 2 C C206 C208 0 1 2 C C220 1 0 2 F 2 0 2 F G1 L20 2 L203 6 0 2 L 2 0 2 R R203 ...

Page 44: ...out Samsung s authorization 9 15 GSM850 Receiver RX ON Sector PWR 50dBm Resolder or change L102 L103 L104 Change U101 UCP301 MOD101 Pin 2 60dBm Check MOD101 Truth Table Pin 3 LOW Pin 4 HIGH Pin 5 HIGH Pin 6 LOW No Yes Resolder RFS101 C1024 L101 Resolder or change MOD101 No MOD101 Pin 12 13 Yes U101 Pin 50 51 75dBm No Yes Yes ...

Page 45: ...ization 9 16 GSM850 Transmitter TX ON PCL 5 level Cell Power 40dBm MOD101 Pin 11 5dBm U101 Pin 55 5dBm END Resolder RFS101 C1024 L101 Resolder or change MOD101 MOD101 Pin 2 5dBm Check MOD101 Truth Table Pin 3 HIGH Pin 4 LOW Pin 5 LOW Pin 6 LOW No No No Yes Yes Yes YES Resolder or change C120 Check U101 UCP301 Normal Condition Catch the channel ...

Page 46: ...out Samsung s authorization 9 17 GSM900 Receiver RX ON Sector PWR 50dBm Resolder or change L105 L106 L107 Change U101 UCP301 MOD101 Pin 2 60dBm Check MOD101 Truth Table Pin 3 LOW Pin 4 LOW Pin 5 HIGH Pin 6 LOW No Yes Resolder RFS101 C1024 L101 Resolder or change MOD101 No MOD101 Pin 14 15 Yes U101 Pin 48 49 75dBm No Yes Yes ...

Page 47: ...ization 9 18 GSM900 Transmitter TX ON PCL 5 level Cell Power 40dBm MOD101 Pin 11 5dBm U101 Pin 55 5dBm END Resolder RFS101 C1024 L101 Resolder or change MOD101 MOD101 Pin 2 5dBm Check MOD101 Truth Table Pin 3 HIGH Pin 4 LOW Pin 5 LOW Pin 6 LOW No No No Yes Yes Yes YES Resolder or change C115 Check U101 UCP301 Normal Condition Catch the channel ...

Page 48: ...ut Samsung s authorization 9 19 DCS Receiver RX ON Sector PWR 50dBm Resolder or change L108 L109 L110 Change U101 UCP301 MOD101 Pin 2 60dBm Check MOD101 Truth Table Pin 3 LOW Pin 4 LOW Pin 5 LOW Pin 6 LOW No Yes Resolder RFS101 C1024 L101 Resolder or change MOD101 No MOD101 Pin 16 17 70dBm Yes U101 Pin 46 47 75dBm No Yes Yes ...

Page 49: ...orization 9 20 DCS Transmitter TX ON PCL 5 level Cell Power 40dBm MOD101 Pin 9 5dBm U101 Pin 56 5dBm END Resolder RFS101 C1024 L101 Resolder or change MOD101 MOD101 Pin 2 5dBm Check MOD101 Truth Table Pin 3 HIGH Pin 4 HIGH Pin 5 LOW Pin 6 LOW No No No Yes Yes Yes YES Resolder or change C118 Check U101 UCP301 Normal Condition Catch the channel ...

Page 50: ...hout Samsung s authorization 9 21 PCS Receiver RX ON Sector PWR 50dBm Resolder or change L111 L112 L113 Change MOD101 UCP301 MOD101 Pin 2 60dBm Check MOD101 Truth Table Pin 3 LOW Pin 4 HIGH Pin 5 LOW Pin 6 LOW No Yes Resolder RFS101 C1024 L101 Resolder or change MOD101 No MOD101 Pin 18 19 Yes U101 Pin 44 45 75dBm No Yes Yes ...

Page 51: ...sed without Samsung s authorization 9 22 PCS Transmitter TX ON PCL 5 level MOD101 Pin 9 5dBm U101 Pin 56 5dBm END Resolder RFS101 C1024 L101 Resolder or change MOD101 MOD101 Pin 2 5dBm Check MOD100 Truth Table Pin 3 HIGH Pin 4 HIGH Pin 5 LOW Pin 6 LOW No No No Yes Yes Yes YES Resolder or change C118 Check U101 UCP301 ...

Page 52: ...D S A I B R _ X T 8 6 G U L S _ D N G 9 6 7 VDDA2 1 T U O _ F R _ B H 6 5 2 T U O _ F R _ B L 7 5 2 T U O _ F R _ B H 8 5 9 5 3 T U O _ F R _ B H 6 VDDA1 2 A D D V 0 6 2 A D D V 1 6 2 A D D V 2 6 EGSM_INN 49 VTUNE1 5 GCELL_INP 50 GCELL_INN 51 2 5 PDET_IN 1 A D D V 3 5 2 A D D V 4 5 1 T U O _ F R _ B L 5 5 WDRXLB 41 GPS_IN 42 VDDA2 43 GPCS_INP 44 45 GPCS_INN DCS_INP 46 DCS_INN 47 EGSM_INP 48 T U O ...

Page 53: ... 38 This Document can not be used without Samsung s authorization 0 1 0 1 C C1011 6 1 0 1 C C1018 C122 C123 C124 C125 C128 9 2 1 C C130 1 3 1 C C132 C133 C141 C142 7 0 1 F 2 0 1 L 3 0 1 L L104 5 0 1 L 6 0 1 L L107 8 0 1 L 9 0 1 L L110 1 1 1 L 2 1 1 L L113 7 2 1 L L128 MOD101 U101 RTR6285 ...

Page 54: ...3 WCDMA 2100 Receiver RX ON Sector PWR 50dBm Resolder C1010 C1011 L127 Change MOD101 F107 UCP301 MOD101 Pin 2 60dBm Check MOD101 Truth Table Pin 3 LOW Pin 4 LOW Pin 5 LOW Pin 6 HIGH No Yes Resolder RFS101 C1024 L101 Resolder or change MOD101 No MOD101 Pin 20 70dBm Yes F107 Pin 6 75dBm No Yes Yes F107 Pin 1 75dBm Yes Resolder or change C1016 C1018 L128 No ...

Page 55: ... dBm MOD101 Pin 20 15dBm F107 Pin 6 15dBm END Resolder RFS101 C1024 L101 Resolder or change MOD101 MOD101 Pin 2 15dBm Check MOD101 Truth Table Pin 7 LOW Pin 6 LOW Pin 8 LOW Pin 9 HIGH No No Yes Yes Yes NO YES Resolder C1010 C1011 L127 Check U101 Resolder or change F107 C1017 C1019 C1020 U104 Pin 9 15dBm U104 Pin 2 15dBm U101 Pin 59 15dBm Yes Yes Resolder or change U104 Resolder or change F106 Yes ...

Page 56: ... 25 WCDMA 1900 Receiver RX ON Sector PWR 50dBm Resolder C176 C177 L123 Change MOD101 F105 UCP301 MOD101 Pin 2 60dBm Check MOD101 Truth Table Pin 3 LOW Pin 4 LOW Pin 5 LOW Pin 6 HIGH No Yes Resolder RFS101 C1024 L101 Resolder or change MOD101 No MOD101 Pin 22 70dBm Yes F105 Pin 6 75dBm No Yes Yes F105 Pin 1 75dBm Yes Resolder or change L124 C187 C188 No ...

Page 57: ...er 24 dBm MOD101 Pin 22 15dBm F105 Pin 6 15dBm END Resolder RFS101 C1024 L101 Resolder or change MOD101 MOD101 Pin 2 15dBm Check MOD101 Truth Table Pin 7 LOW Pin 6 LOW Pin 8 LOW Pin 9 HIGH No No Yes Yes Yes NO YES Resolder C176 C177 L123 Check U101 Resolder or change F105 C183 C198 U103 Pin 9 15dBm U104 Pin 2 15dBm U101 Pin 59 15dBm Yes Yes Resolder or change U104 Resolder or change F104 Yes NO NO...

Page 58: ... 9 27 WCDMA 900 Receiver RX ON Sector PWR 50dBm Resolder C152 L116 Change MOD101 F103 UCP301 MOD101 Pin 2 60dBm Check MOD101 Truth Table Pin 3 LOW Pin 4 HIGH Pin 5 LOW Pin 6 HIGH No Yes Resolder RFS101 C1024 L101 Resolder or change MOD101 No MOD101 Pin 21 70dBm Yes F103 Pin 6 75dBm No Yes Yes F103 Pin 1 8 75dBm Yes Resolder or change C157 C169 L120 No ...

Page 59: ...er 24 dBm MOD101 Pin 22 15dBm F103 Pin 6 15dBm END Resolder RFS101 C1024 L101 Resolder or change MOD101 MOD101 Pin 2 15dBm Check MOD101 Truth Table Pin 7 LOW Pin 6 LOW Pin 8 LOW Pin 9 HIGH No No Yes Yes Yes NO YES Resolder C152 L116 Check U101 Resolder or change F102 L122 L118 C174 U102 Pin 7 15dBm U102 Pin 4 15dBm U100 Pin 58 15dBm Yes Yes Resolder or change F102 Resolder or change F102 Yes NO NO...

Page 60: ... L103 R103 R113 L107 C110 L102 ANT102 1 1 2 2 R114 C109 L106 L112 L110 2 A C 1 G 3 G 4 RFS101 R116 ANT_SEL3 ANT_SEL0 ANT_SEL1 ANT_SEL2 TRX_WCDMA1900 GSM850_900_OUT DPCS_OUT TRX_WCDMA2100 RX_DCS1800_P RX_DCS1800_N RX_PCS1900_N RX_GSM850_N RX_GSM850_P RX_EGSM900_N RX_EGSM900_P TRX_WCDMA900 RX_PCS1900_P C1011 C176 L128 C152 C187 C188 G 1 RX TX 3 F107 6 ANT 2 G 4 G G 5 G 7 G 8 9 C1010 C1016 L116 3 TX ...

Page 61: ...4 C145 C146 C147 8 4 1 C 9 4 1 C C150 C151 2 5 1 C C153 4 5 1 C 5 5 1 C 6 5 1 C C157 C158 C159 C160 1 6 1 C 2 6 1 C 3 6 1 C 4 6 1 C C165 6 6 1 C 7 6 1 C 8 6 1 C C169 0 7 1 C 1 7 1 C 2 7 1 C C174 C175 C176 7 7 1 C 8 7 1 C C179 1 8 1 C C182 3 8 1 C 5 8 1 C C186 7 8 1 C C188 C195 C196 C197 8 9 1 C 1 0 1 F F102 3 0 1 F 4 0 1 F 5 0 1 F F106 7 0 1 F 1 0 1 L 2 0 1 L 3 0 1 L L104 5 0 1 L 6 0 1 L L107 8 0 ...

Page 62: ...an not be used without Samsung s authorization 9 29 Charging Part Yes check the U401 Check the U802 Check the TA Yes No Check the U401 s pin 4 10 is Low when charging Yes No Check the U401 s pin 11 is about 5V when charging Yes No END Abnormal charging part Check IFC801 s pin 1 is about 5 0V when charging ...

Page 63: ...This Document can not be used without Samsung s authorization R404 R407 VCC_3 0V_PDA VUSB_5 0V R409 C413 TP_CHG C461 R410 VBAT 14 NC NC 15 12 T U O E F A S 1 SETI 7 _ABO G H C _ 10 4 N E _ 6 K O P _ ABI 3 BATT 8 2 DETBAT 5 D N G GND 13 N I 11 MIN 9 U401 VOVP_5 0V TA_ISET VF CHG_EN CHG_ING_N ...

Page 64: ... without notice Flow Chart of Troubleshooting 9 49 This Document can not be used without Samsung s authorization 9 30 Radio part Radio does not work Yes Resolder or Replace L201 check VCC_3 0V_PDA on L201 Is it 3 0V Yes END Resolder the U201 ...

Page 65: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting 9 50 This Document can not be used without Samsung s authorization ...

Page 66: ...ase screw 5 point at rear 1 2 3 1 Disjoint the top bottom of rear from the set 1 After slide open disjoint the left of rear from the set 4 1 Disjoint the right of rear from the set 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage ...

Page 67: ... damage PBA 1 Beware that you do not damage PBA 1 Beware that you do not damage Slide FPCB 1 Beware that you do not damage Slide FPCB 1 Detach the slide FPCB connector volume key camera key FPCB from the front ass y 5 1 Release screw 3 point at shield can 1 Disassembled PBA and front ass y 6 1 2 1 Detach the slide FPCB from the front 7 1 Slowly and cautiously detach the slide FPCB 8 ...

Page 68: ...eful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage 1 Release screw 4 point at front hinge 9 1 Disassemble the qwerty keypad and front 10 1 Separate the front and slide ass y 11 1 Disassembled the front and slide ass y 12 ...

Page 69: ...t to make scratch and molding damage 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage 1 Detach the screw cap 2point 13 1 Release screw 4 point at lower 14 1 Detach the lower from upper take advantage of disjoint point 15 1 Disjoint the rear from the upper ass y 16 1 2 3 ...

Page 70: ...orization 1 Beware that you do not damage LCD pannel 1 Beware that you do not damage FPCB 1 Beware that you do not damage FPCB 1 Detach the LCD pannel from inner lower 17 1 Disassembled the upper ass y and lower 18 1 Draw out the sub key TSP FPCB from the slide FPCB connector 19 20 1 Detach the top of the slide FPCB 2areas from the upper Softly press ...

Page 71: ...ation 1 Beware that you do not damage FPCB 1 Beware that you do not damage FPCB 1 Be careful not to make scratch and molding damage 1 Draw out the slide FPCB from the LCD connector 21 1 Slowly and cautiously detach the slide FPCB from the LCD plate 22 1 Disassembled upper ass y and slide FPCB 23 1 cautiously detach the LCD from the upper s TSP pannel 24 ...

Page 72: ...ng s authorization 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage 1 Separated LCD and Upper ass y 25 PUSH 1 Push the bottom of TSP for detach TSP and upper 26 2 1 1 Push the side of the TSP 2 Detach ahead of the top of TSP from upper cautiously 27 1 Disassembled upper ass y and TSP 28 ...

Page 73: ...ce Disassembly and Assembly Instructions 11 8 This Document can not be used without Samsung s authorization 1 Be careful not to make scratch and molding damage Push the hook 1 Separate the sub key from the upper 29 1 Disassembled sub keypad and upper 30 ...

Page 74: ... be used without Samsung s authorization 11 2 Assembly 1 2 3 4 1 Set a sub keypad and upper 1 Attach the TSP to the upper 1 Set a upper ass y and TSP 1 Assemble the sub keypad to upper guide Attach Guide Top of upper 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage ...

Page 75: ...without Samsung s authorization 2 Beware that you do not damage LCD 2 Beware that you do not damage slide FPCB 5 6 7 1 Attach the LCD to the upper ass y 1 Set a upper ass y and slide FPCB 1 Insert slide FPCB into LCD connector 2 After insert it Close the connecter cover 8 1 Set a upper ass y and LCD Notice interference about FPCB ...

Page 76: ...ss y 1 Attach the Slide FPCB to the back of LCD 10 1 2 3 Insert the TSP FPCB Attach the PCB Attach the CIF camera Attach Guide line 11 1 Insert sub key FPCB into the connector 2 After insert it Close the connector cover 1 Set a upper ass y and lower 12 Insert guide line 2 Beware that you do not damage FPCB and this items 2 Beware that you do not damage slide FPCB 2 Beware that you do not damage FP...

Page 77: ...on the lower 1 Attach the screw cap 2point 16 13 1 Go through the slide FPCB to the lower s hole 1 Assemble the upper ass y and lower 2 Attach the slide FPCB to the lower 14 Attach guide rib 2 1 2 Beware that you do not damage slide FPCB 2 Beware that you do not damage slide FPCB 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage ...

Page 78: ... not be used without Samsung s authorization 19 1 Assemble the upper ass y and front 1 Set a front ass y and qwerty keypad 20 17 1 Set a upper ass y and front 1 Go through the slide FPCB to the front s hole 18 Fit the hinge 2 Beware that you do not damage slide FPCB 1 Be careful not to make scratch and molding damage ...

Page 79: ...zation 23 1 Set a front ass y and PBA 1 Assemble the PBA and front ass y 24 21 1 Attach the qwerty keypad to front 1 Attach the slide FPCB to the front 2 After attached press the FPCB 22 Standard guide rib 1 2 3 slide FPCB bending point Attach guide rib 2point 1 Be careful not to make scratch and molding damage 2 Beware that you do not damage slide FPCB ...

Page 80: ... a front ass y and rear 1 Assemble the front ass y and rear 28 25 1 Attach the slide FPCB to connector 2 Insert the 5M Camera into the guide hole 1 Insert the volume key camera key into the guide hole 26 First assemble point right 2 Beware that you do not damage connector and items 2 Beware that you do not damage FPCB 1 Be careful not to make scratch and molding damage ...

Page 81: ...thorization 29 1 Assemble the front ass y and rear surely press the sim socket area 1 After assembling Check the status of the slide open point 30 Pressing point 31 1 Drivers 5 screws on the rear 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage 1 Be careful not to make scratch and molding damage ...

Page 82: ...www s manuals com ...

Search results

Summary of Contents for GT-B7620

Reviews:

Related manuals for GT-B7620

Brands by name

Popular brands

Samsung GT-B7620, Service Manual

Search results

Summary of Contents for GT-B7620

Reviews:

Related manuals for GT-B7620

Brands by name

Popular brands