Samsung GT-E2121B Service Manual Download

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GSM TELEPHONE

GT-E2121B

1. Safety Precautions

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

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Summary of Contents for GT-E2121B

Page 1: ...cation 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 efrcom ...

Page 2: ...d or domestic law Samsung Electronics Co Ltd 2010 03 Rev 1 0 ⓒ 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 GSPN Global Service Partner Network ...

Page 3: ...K Not OK Not OK Check VPERM_3 0V VANA_2 85V VRF_2 85V VSIM_3 0V VMEM_1 8V VGPIO_2 8V of UCP201 Check the UCP201 END OK Check the pin 1 of OSC201 produces clock signal Solder OSC201 again OK Check the L118 concerning about Jig Power on Solder L118 again OK Is Power On working OK Repeat sequence Yes Change battery Check battery voltage is higher than 3 3V Yes POWER ON does not work ...

Page 4: ...MIC_N EAR_MIC_P EAR_SW_REF USB_DM EAR_N L201 W9 UART1_RD W5 W6 UART1_RT S W8 ICHGN ICHGP W12 PMU_VPER M W13 PMU_VRF W14 PMU_VANA W15 PMU_VIO V5 UART1_TD V7 UART1_CT S V8 POK_OUT PMU_VSI M V15 PMU_VMEM V14 T5 PWM_OUT1 T6 PWM_OUT2 T7 PWM_OUT0 T8 POK_IN L15 FE_CTRL3 L18 UART0_RD L19 XTAL_32K_1 UART0_TD K19 XTAL_32K_2 FE_CTRL2 K15 K18 J18 PCM_SYN C J19 PCM_CLK PCM_DI H16 PCM_DO H18 H19 SIM_CLK H15 G1 ...

Page 5: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 3 ...

Page 6: ...can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 4 9 2 SIM Part Insert SIM is displayed on the LCD VSIM_3 0V at the pin 1 SIM200 H No Check the SIM Power Yes Is there any signal pin 2 3 4 of SIM201 Check UCP201 No Yes Check the SIM Card END ...

Page 7: ...nge without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 5 C234 G 13 14 G G 15 16 G C232 2 3 4 5 6 7 7 8 8 9 9 SIM201 1 10 10 11 11 12 12 VSIM_3 0V R213 C233 SIM_CLK SIM_DATA SIM_RST ...

Page 8: ...g 9 6 9 3 Microphone Part Phone MIC Phone MIC does not work Yes Not OK Check the connection of MIC Solder MIC again Yes Replace MIC OK Is Phone MIC working OK Solder R118 R132 C141 C145 and C142 again Check the components which are connected to MIC_BIAS Solder L108 R131 ZD100 and ZD103 again Check the circuit of MIC PART END Not OK Not OK No OK ...

Page 9: ...ts may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 7 MAIN_MIC R118 R132 C142 C146 R130 MIC_BIAS ZD103 ZD100 0ohm R131 L108 MIC100 C140 C141 C145 MIC_P MIC_N ...

Page 10: ...ophone Part Earphone MIC Earphone MIC does not work Yes Not OK Check the connection of IFC100 Solder pin 3 of IFC100 again Solder L111 L113 and R120 again Check the circuit of EAR MIC OK Solder R118 R132 C141 C145 and C142 again Check MIC_BIAS When UCP201 operates and call is connected OK END Not OK Is Earphone MIC working Repeat the sequence Yes No OK Not OK ...

Page 11: ...1005 R126 R122 R120 C136 C147 C139 L116 C135 NC 22 NC 23 24 NC NC 25 26 NC 27 NC 20 20 3 3 4 4 5 5 6 6 7 7 8 8 9 9 21 NC 14 14 15 15 16 16 17 17 18 18 19 19 2 2 HY20 AB0310 IFC100 1 1 10 10 11 11 12 12 13 13 VDD_3 3V C149 C148 R129 C132 R124 L118 VCM_OUT JIG_ON_IF AUX_DET UART0_RD JIG_ON TA_DETECT USB_EN UART0_TD EAR_MIC_N EAR_MIC_P EAR_SW_REF USB_DM EAR_N R_ANT USB_DP EAR_P EAR_SW MAIN_MIC R118 R...

Page 12: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 10 ...

Page 13: ...ng This Document can not be used without Samsung s authorization 9 11 9 5 Earphone Part Earphone does not work Yes Not OK Solder pin 5 6 7 of IFC100 L115 L116 and L117 again Check the circuit of IFC100 OK Check the UCP201 Pin R19 T19 P19 Solder UCP201 or replace UCP201 Not OK END Yes ...

Page 14: ...P MIC_N MIC_P SPK_P EAR_P SPK_N EAR_SW_REF EAR_SW EAR_N Digital External Interface UART EAR_MIC 1 S 2 Q100 D 3 G L111 C137 R128 R119 R125 C133 1 2 3 4 5 6 ZD105 L115 R117 1 2 3 4 5 6 ZD104 R123 C134 C138 L117 VCHG_5V C150 L113 VBAT 1005 R126 R122 R120 C136 C147 C139 L116 C135 NC 22 NC 23 24 NC NC 25 26 NC 27 NC 20 20 3 3 4 4 5 5 6 6 7 7 8 8 9 9 21 NC 14 14 15 15 16 16 17 17 18 18 19 19 2 2 HY20 AB...

Page 15: ... of Troubleshooting This Document can not be used without Samsung s authorization 9 13 9 6 Charging Part Abnormal charging operation Yes Not OK Check the U200 Pin 1 5V Replace U200 OK OK END Check the TA connection Check the C225 and R214 Solder C225 and R214 Not OK ...

Page 16: ...SAMSUNG Proprietary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 14 ...

Page 17: ...ent can not be used without Samsung s authorization 9 15 9 7 Speaker Part Speaker does not work Yes Not OK Solder R210 L109 L110 ZD101 and ZD102 again OK END Not OK Solder UCP201 again or replace UCP201 Not OK Check Pin W18 W19 of UCP201 Check R210 L109 L110 ZD101 and ZD102 OK Replace the speaker ...

Page 18: ...e This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 16 HSET_OUT_N W18 HSET_OUT_P W19 HKSW_DET1 P19 HKSW_DET2 N19 R210 SPK_P SPK_N EAR_SW_REF EAR_SW SPEAKER ZD101 L110 L109 SPEAKER_PAD 33nH ZD102 C143 SPK_P SPK_N ...

Page 19: ...MSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 17 C143 L109 L110 L302 R324 SPEAKER_PAD U307 ZD101 ZD102 ...

Page 20: ...d without Samsung s authorization Flow Chart of Troubleshooting 9 18 9 8 Key Data Input When one of the keys is pushed is it displayed on LCD Check the Dome sheet Key FPCB END No Yes Yes Check Initial Operation When one of the keys is pushed KEY_IO signal is OK Replace the PBA No Yes ...

Page 21: ...t can not be used without Samsung s authorization 9 19 9 9 Back Light for Color Main LCD Is BACKLIGHT set AlwaysON in the Menu Set BACKLIGHT on Always ON END No Yes Yes Backlight does not work Check the outflow voltage of U303 PIN 3 is equal to 3 7V Replace U303 Not OK OK Yes Replace the LCD Module ...

Page 22: ...etary Contents may change without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 20 R325 1005 D2 EN 1 GND 2 IN 3 RSET 5 U303 D1 6 4 C310 VBAT LCD_BL_EN LED2 LED1 ...

Page 23: ...oting This Document can not be used without Samsung s authorization 9 21 9 10 Key Back Light Key Backlight does not work Replace LED Yes OK Not OK Resolder C309 and replace U302 Check KEY_EN and C309 Yes Yes No END Set BACKLIGHT on Always ON Is BACKLIGHT set Always ON in the Menu ...

Page 24: ...ice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 22 KEY LED LED302 R314 LED304 C309 VBAT LED300 LED301 LED303 R317 R315 R319 C308 R316 LED305 R318 EN 3 2 GND GND 5 VIN 4 1 VOUT MIC5365 3 3YMT U302 KEY_EN ...

Page 25: ...msung s authorization 9 23 9 11 GSM Receiver RX ON RF INPUT 62CH AMP 50dBm Yes Check PAM100 pin 12 EGSMRX 65dBm No Resolder or Change PAM100 Yes END Check UCP201 pin G1 F1 EGSMRX 65dBm No Resolder or Change F100 Check UCP201 MOD_STANDBY HIGH PON_PA LOW BAND LOW Yes No Resolder or Change UCP201 Check C125 C127 and L106 Not ok ...

Page 26: ...tice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 24 9 12 GSM Transmitter Yes PAM100 Pin16 30dBm Resolder PAM100 TX MODULE TX ON 5Level PAM100 pin4 0dBm Resolder UCP201 Yes Yes No No END Check UCP201 Yes ...

Page 27: ...ung s authorization 9 25 9 13 DCS Receiver Yes Check PAM100 pin 17 DCSRX 65dBm No Resolder or Change PAM100 Yes Yes END Check UCP200 pin E1 D1 DCSRX 65dBm No Resolder or Change F100 Check UCP201 MOD_STANDBY HIGH PON_PA LOW BAND HIGH Yes No Resolder or Change UCP201 RX ON RF INPUT 698CH AMP 50dBm Check C117 C122 and L102 Not ok ...

Page 28: ...hange without notice This Document can not be used without Samsung s authorization Flow Chart of Troubleshooting 9 26 9 14 DCS Transmitter PAM100 Pin16 30dBm Resolder PAM100 TX ON 0Level PAM100 pin2 0dBm Resolder UCP201 END Check UCP201 ...

Page 29: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 27 ...

Page 30: ...9 15 FM Radio Part Not OK Solder UCP201 again OK Not OK Replace the UCP201 END FM Radio does not work Yes Check the voltage at Pin 16 11 10 of U311 Is it OK Not OK Resolder of change U311 OK Is there any singnals at the Pin 13 and 14 of U311 Resolder of change U311 Not OK OK Is there any signals at the Pin P18 and R18 of UCP201 Resolder of change U311 ...

Page 31: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 29 ...

Page 32: ...Chart of Troubleshooting 9 30 9 16 BLUETOOTH BT Connection disable check BT Funtion on Yes Not OK Enable BT Function Check C115 2 8V Not OK Check the path form UCP201 to U103 Check the path form UCP201 to U103 OK Check Testpoint 100 32khz Not OK Enable BT Function Not OK OK Check the Status of ANT102 OK Replace U103 OK END ...

Page 33: ...SAMSUNG Proprietary Contents may change without notice Flow Chart of Troubleshooting This Document can not be used without Samsung s authorization 9 31 ...

Page 34: ...sor SAIC TTY CTM Integrated DCXO and AFC correction I2C UART PCM PWM Bluetooth FM support SIM card interface Color LCD up to 176x220 pixels 65K colors Analog accessory detection Threeclock output 32KHz 26MHz 26 nMHz Up to 42 GPIOs 1 8V 2 8V 78MHz burst memory access KEYPAD MOTOR SIM OVP BATTERY MEMORY IF CONNECTOR RF SYSTEM BLUETOOTH FM RADIO EAR MIC MIC SPEAKER EAR SPEAKER BACK END IC AIT708U SD ...

Page 35: ...SAMSUNG Proprietary Contents may change without notice 8 PCB Diagrams 8 1 This Document can not be used without Samsung s authorization 8 1 Top ...

Page 36: ...SAMSUNG Proprietary Contents may change without notice PCB Diagrams 8 2 This Document can not be used without Samsung s authorization 8 2 Bottom ...

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