Samsung STH-N271 Service Manual Download

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SERVICE

SINGLE BAND Mobile
Cellular Phone

STH-N271

3
6

5
8

Manual

SINGLE BAND Mobile Cellular Phone

CONTENTS

1. Specification

2. Trouble Shooting

3. Test Procedure

4. Function of All Active Devices

5. Frequency Synthesizer Circuit

and Spurious Radiation
Suppression Circuit

6. Easy NAM Programming

7. Electrical Parts List

8. Exploded Views and Parts List

9. Block Diagram

10. PCB Diagrams

11. Circuit Description &

Circuit Diagrams

Summary of Contents for STH-N271

Page 1: ...NTS 1 Specification 2 Trouble Shooting 3 Test Procedure 4 Function of All Active Devices 5 Frequency Synthesizer Circuit and Spurious Radiation Suppression Circuit 6 Easy NAM Programming 7 Electrical Parts List 8 Exploded Views and Parts List 9 Block Diagram 10 PCB Diagrams 11 Circuit Description Circuit Diagrams ...

Page 2: ... Samsung Electronics Co Ltd August 2001 Pinted in Korea Code No GH68 02202A BASIC ELECTRONICS ...

Page 3: ...System Channel Number Transmitter Receiver Not used 990 CH 824 01 MHz 869 01 MHz A 991 CH 1023 CH 824 04 825 00 MHz 869 04 870 00 MHz A 1 CH 333 CH 825 03 834 99 MHz 870 03 879 99 MHz B 334 CH 666 CH 835 02 844 98 MHz 880 02 889 98 MHz A 667 CH 716 CH 845 01 846 48 MHz 890 01 891 48 MHz B 717 CH 799 CH 846 51 848 97 MHz 891 51 893 97 MHz Transmitter 1 N 799 0 03N 825 00 MHz 990 N 1023 0 03 N 1023 ...

Page 4: ... Duplexer Space 45 MHz Frequency Stability 2 5 ppm 200 Hz Operating Temperature 30 o C 60 o C Size and Weight Including 900 mAh battery 108 H x 42 W x 17 2 D 93 g Including 1200 mAh battery 108 H x 42 W x 18 7 D 100 g Operating Time Standby time Including 900 mAh battery 35 45 hr 130 230 hr Including 1200 mAh battery 45 55 hr 190 300 hr Talk time Including 900 mAh battery 60 90 min 2 3 hr Includin...

Page 5: ...part SAMSUNG Proprietary Contents may change without notice 2 1 2 STH N271 Trouble Shooting 1 Baseband Section 1 1 Program No Running Press END Key Y Y Y Y Y Y ON_SW H VBAT 3 2V VCTCXO_IN 14 4MHz 32K_XIN 32 768 kHZ Memory U202 control signal OK VCC 3 0V V_VCTCXO 3 0V RST 3 0V IVCC 2 2V BOOT H Program Running VCC ADD 0 21 DATA 0 15 FLASH_CS SRAM_CS UBE MEMOEB MEMWEB ...

Page 6: ...eed to check U104 neighbor Part Y EL Back light OK VCC ADD 2 DATA 0 7 DISPLAY_CS RST LCD Display Running Send Command EL enable Test mode 176 N Need to check R216 U205 D202 Y Y VIBRATOR H N Need to check CN202 Y Vibrator Run OK LCD Display Running EL Back lingt Running Send Command Vibrator enable Test mode 180 N Need to check SPK101 neighbor part Y Y REC20 Signal OK LCD EL Vibrator OK Send Comman...

Page 7: ...mal Key Mic LED S operation Press Keys Y Y Key Dispaly OK Y Key Display Good Send Command Main Audio Path ON Test mode 031 131 136 187 Talking Voice at MIC N Need to check D210 D211 Q204 Q206 Y Y Y LED Operation OK Key Display Good Mic Path Good Send Command ALT_LED_ON Send Command SVC_LED_ON Send Command LED_ON Test mode 178 Audio signal output at Speaker GOOD ...

Page 8: ... without notice 2 4 STH N271 Trouble Shooting 1 4 Abnormal Buzzer Operation START Y N Need to check U204 D201 CN202 Y Y Ringer Signal OK Send Command Ringer Path ON Test mode 183 N Replace CN202 Y Buzzer Sound Output OK Buzzer Operation Good ...

Page 9: ...eration START Y N Need to check Q101 CN101 neighbor parts Y Y HEADSET_SENSE H Hock Up Ear_Mic Phone in the Jack CN101 Send Command MIC_BIAS_EN enable Send Command AMP_EN enable Audio set Path HS Test mode 187 N Need to check Q102 CN101 neighbor parts Y Y SEND_END H Press Button on the Ear Jack Ear_Mic phone Operation Good ...

Page 10: ...out notice 2 6 STH N271 Trouble Shooting 2 RF Section 2 1 Call processing and Online Test N DONE START Y Y Normal SVC Check RX path N Y Set up Call OK Check TX path N Y Measure SINAD BER Good Check RX path N Y Measure Tx Power Good Check TX path ...

Page 11: ...6 U107 F305 output 49dBm Y N Need to check F306 U301_8 53dBm N Need to check F304 neighbor parts Y RF_BAND L RX_BAT H PLL_ON H PON_LC H VCTCXO_PC H IF_ON H PON_VRF3 H set up 8920B basestation for RX test Set Base station RX Lev 50 dBm Send Command RX path ON Send Command channel selecton Test mode 134 131 START N Y V_LNA_CELL H U107_1 H U105_1 H Need to check U301 neighbor parts F304 input 33dBm 2...

Page 12: ...bor parts U304_1 2 3 Need to check U105 neighbor parts N Y Y Y Y Y RF loal check U304_48 Lev 6dBm Freq adjusted freq 1 U304_41 Lev 23dBm Freq 130 05MHz U304_34 Lev 33dBm Freq 130 05MHz N Need to check U304 L303 C308 L301 C307 U304_37 Lev 1dBm Freq 450kHz Y N Replace F301 or Need to check R302 R304 C301 U304_25 Lev 7dBm Freq 450kHz MODE U304_40 42 3 0V 4 3 ...

Page 13: ...0 PON_LD H Case AMPS mode setup basestation for RX test Audio Freq gen 1004Hz FM deviation 2 9kHz 4 Y Y Y U304_16 DEMOD sinusoidal wave Vp p 24mV Freq 1004Hz N Need to check U304 R327 R323 C353 C107 U101_52 DEMOD sinusoidal wave MAX Vp p 1 4V Freq 1004Hz N Replace U203 Y U101_40 BBCLK 6 2208MHz or 4 96NHz or 5 12MHz N Replace U203 Y U101_32RX_CLK BBCLK 2 or BBCLK 8 N Replace U203 Y U101_31 RX_SYNC...

Page 14: ...est Y Y Y U101_40 BBCLK 6 2208MHz or 4 096MHz or5 12MHz Y U101_34 TX_CLK BBCLK 32 or BBCLK 8 Y U101_33 TX_SYNC BBCLK 512 or BBCLK 128 Y U101_33 TX_DATA serial data RF_BAND L TX_BAT H PLL_ON H VCYCXO_PC H IF_ON H PON_TX H PON_VRF3 H setup 8920B as basestaion for TX test audio signal Send command TX path ON Send Command channel selection Test mode 136 131 START AMPS TDMA 2 1 MODE ...

Page 15: ...58 57 TX I Q Quarature signal AC Lev Vp_p 0 4V DC bias Lev 1 5V U101_63 MOD sinusoidal wave MAX Vp p 1 4V Freq 1004Hz OSC303_1 FM modulation out Freq 175 05MHz Audio Freq 1004Hz Need to check OSC303 V_IF_VCO 3 0V N Y N N Y Need to check U304_66 or Replace U304 U304_59 RF OUT measure Level Send command PA_CNT Test mode 132 Level is adjustable N Y Replace F310 U304_59 RF OUT Fc Local_freq 175 05 N Y...

Page 16: ...e U307 U307 Gain around 27dB N Y Replace F309 F309 Insertion loss around 3dB N Y Need to check V_PA_BAIS_CELL U305_5 6 7 3 0V VBATT U305_14 15 16 3 2 1V or Replace U305 U305 Gain around 30dB N Y Need to check F313 neighbor parts F306_1 around same power with U305 output N Y Need to check F313 neighbor parts F306 insertion loss under 3dB N DONE ...

Page 17: ...S TEST SET HP CARD modified by Samsung SIGNAL GENERATOR 2 SETS SPECTRUM ANALZER DEVICE UNDER TEST STH N271 TEST INTERFACE ADAPTER COMBINNER DC POWER SUPPLY PC Cables RF CABLE DATA CABLE SERIAL CABLE etc SAMSUNG Proprietary Contents may change without notice 3 1 ...

Page 18: ...1 Test Procedure 2 Configuration of Test 2 1 Test Configration 1 2 3 6 4 5 8 7 9 RF cable DUT Data cable TEST I F ADAPTER 3 8 V A OUT TO PC TO HP A IN DC P S 4 pin cable RF IN OUT A OUT A IN 8920B TDMA M S TEST SET HP CARD serial port Signal GEN2 Signal GEN1 combinner ...

Page 19: ... change without notice 3 3 STH N271 Test Procedure 2 2 Test Configration 2 2 3 6 4 5 8 7 9 RF cable coupler DUT Data cable TEST I F ADAPTER DC P S 3 8 V A OUT A IN RF IN OUT A OUT A IN HP CARD 8920B TDMA M S TEST SET Spectrum Analyzer ...

Page 20: ...ntents may change without notice 3 4 STH N271 Test Procedure 2 3 Test Configration 3 Hands Free Kit Ignition Cable DUT Cradle Data cable Hands Free Kit BOX Power cable DC Power Supply 13 7 V Hands Free Mic Hands Free Speaker ...

Page 21: ...Cable description NAME DESCRIPTION 1 RF CONNECTOR Hook up to DUT RF switch 2 RF CABLE Line loss 1 5dB cable 3 BNC CONNECTOR Connect to TEST equipment 4 INTERFACE CONNECTOR Hook up to DUT Button connector Table 4 5 DATA CABLE PST CABLE Normal data cable PC Link 6 DSUB 25PIN CONNECTOR Connect to TEST I F ADAPTOR Table 5 ...

Page 22: ... RX_AUDIO HFK audio receiver signal 8 GND 9 C_FNSTRB Battery interface Strobe serial interface 10 GND 11 TX_AUDIO HFK audio transmitter signal 12 GND 13 DP_RX_DATA UART1 RX data 14 DP_TX_DATA UART1 TX data 15 HP_PWR External power on Test I F Adapter HFK 16 RI UART1 signal 17 CD UART1 signal 18 V_F Battery interface signal 19 GND 20 RTS UART1 signal 21 BATT 22 BATT 23 CTS UART1 signal 24 DTR UART1...

Page 23: ... NC 4 BATT 5 NC 6 BATT 7 HP_PWR External power Test I F Adapter HFK 8 NC 9 NC 10 TX_AUDIO HFK audio transmitter signal 11 GND 12 RX_AUDIO HFK audio receiver signal 13 GND 14 NC 15 GND 16 NC 17 NC 18 SIN2 UART2 OUT signal 19 SOUT2 UART2 IN signal 20 NC 21 DP_RX_DATA UART1 RX data 22 DP_TX_DATA UART1 TX data 23 BOOT BOOT Data IN serial interface 24 NC 25 NC ...

Page 24: ... 137 270 RXA Electrical Audio Response 2 2 2 1 RXA Expander Output 2 2 2 3 RXA Hum and Noise 2 2 2 4 RXA Audio Harmonic Distortion 2 2 2 5 RXA RF Sensitivity 2 3 1 1 TXA RF Power Output 3 2 1 1 TXA Modulation Type Stability 3 3 1 1 TXA Compressor Output 3 3 1 2 1 TXA Electrical Audio Response 3 3 1 2 2 TXA Modulation Deviation Limiting 3 3 1 2 3 TXA Wideband Data 3 3 1 3 TXA Hum and Noise 3 3 1 6 ...

Page 25: ...nnel RF amplitude based on standard 2 3 1 2 2 b Power ON the phone c For entering the test mode Press the key number 2 4 2 6 4 d Input the commands 0 3 1 Suspend 1 3 1 Set_atten 3 8 3 channel 1 7 3 Compoff 0 3 2 HFK_on 1 3 4 RXUNMUTE e Measure Power of Adjacent channel Signal Generator to meet 12dB SINAD based on standard 2 3 1 2 2 f Measure Power of Alternate channel Signal Generator to meet 12dB...

Page 26: ...3 1 4 2 4 5 RXA RSSI Ref 2 6 1 a Set up all test equipment like as Test configuration 1 Setup channel RF amplitude based on standard 2 6 1 2 b Power ON the phone and Press the key number 9 9 9 9 0 c Make a call d Measure RSSI by test mode in the telephone based on standard 2 6 1 2 4 6 TXA Audio Muting Ref 3 3 1 2 4 a Set up all test equipment like as Test configuration 1 RF amplitude 50dBm Setup c...

Page 27: ...mands 0 3 1 Suspend 1 3 1 Set_atten 3 8 3 channel 0 3 2 HFK_on 1 2 9 Carrier_ON 1 3 6 TXUNMUTE e Setup Voise and SAT tone based on standard 3 4 1 1 2 and 3 4 1 1 3 1 6 1 SATOFF f Send command SATON 1 6 0 SATON g Send disable compressor 1 7 3 COMPOFF h Measure the Spurious based on standard 3 4 1 1 3 4 8 TXD Harmonic Conducted Spurious Emission Ref 3 4 2 2 a Set up all test equipment like as Test c...

Page 28: ...GCR 45 Get Set WBD_WBTx_GCR 46 Get Set ST_WBTx_GCR 47 Get Set SAT_Gain 49 Get Set DTMF Volume 63 IS 137 RESTART 96 SetBand 0 Cell 1 PCS 97 SetMode 0 Scan_mode 1 ACC 2 AVC 4 DTC 5 DCCH 6 TCH_DATA 98 Get Set PA_Bias 99 Get Set pa_cnt_val 100 Get Set TX_I_DOCR 101 Get Set TX_Q_DOCR 102 Get Set TX_I_DGCR 103 Get Set TX_Q_DGCR 128 IS 137 INIT Analog or Digital 129 IS 137 CARRIER ON Analog Only 130 IS 1...

Page 29: ...ON 144 IS 137 STOFF 148 IS 137 SEND NAM 149 IS 137 VERSION Software Version 150 IS 137 SEND SN Return the 32 bit serial number ESN 152 IS 137 RCVSI 154 IS 137 WSTS 158 IS 137 TERMINATE 159 IS 137 A SEND NAM MSID 160 IS 137 SATON 161 IS 137 SATOFF 162 IS 137 CDATA 170 IS 137 DTMFON 171 IS 137 DTMFOFF 172 IS 137 COMPON 173 IS 137 COMPOFF 176 Backlight On 177 Backlight Off 178 Service Alert LED On 17...

Page 30: ... Q DEMOD UP converter 4 U305 RF2162 Power Amplifier Cellular band linear amplifier 5 U307 RF2376TR73 Driver Amp linear variable amplifier suitable for cellular band 6 OSC301 ENFVF1A2ST4 RF VCO dual band RF voltage control oscillator 999MHz 1025 2060 2121MHz 7 OSC303 ENFVH112SA5 IF VCO dual band IF voltage control oscillator 175 05MHz 211MHz 8 OSC302 TCO 9133F TCXO 14 4MHz for reference clock 9 U30...

Page 31: ...998 1025MHz frequency range with the voltage control It has maximum 114dBc 1Hz C N offset and 3 3dBm output power The IF VCO generates the intermediate frequency having 175 05MHz frequency range with the voltage control It has maximum 102dBc 1Hz C N offset and 3 3dBm output power The PLL consist of PLL1 RF section and PLL2 IF section which interior decorated RF chipset U304 The reference divider i...

Page 32: ...ng signal and high attenuation characteristics to the harmonic signals of transmission Therefore it suppresses the spurious radiation Item TX ANT RX ANT Center Freq 836 5 MHz 881 5 MHz Bandwidth BW 12 5 MHz 12 5 MHz Insertion Loss 2 8 dB Max at 25C 4 dB Max 3 dB Max at 30 85C Ripple at BW 1 6 dB Max 2 0 dB Max VSWR 1 8 Min 1 8 Min Attenuation 43 dB Min at 869 894 MHz 56 dB Min at 824 849 MHz Input...

Page 33: ...and a Fail is displayed About editing not in a call a display saying Please Wait is displayed and then completing the entry to NVM automatically moves to Reboot Mode leading to Power On Not Entry but only Reference is available during a call and whether to terminate or not is displayed In case of terminating the display moves to Call Time Display In case of Terminating Conversation or Fade timer t...

Page 34: ...for ESN It transits to Phone Number or Exit Save Change Exit by Up or Down Scroll Key or key 2 Reference of Authorization Code Authorization Code is the Network certification access code It is calculated using ESN RANDO MIN SSD_S by Auth_Signature Algorithm 3 Reference and Edition of Phone Number Phone Number is Moving Station Entry Number like MIN Mobile ID Number 10 digits except and Pause is in...

Page 35: ...3 Primary Paging Channel 333 for odd SIDs otherwise 334 for even SIDs Secondary Paging Channel 708 for odd SIDs otherwise 737 for even SIDs Access Method 1 active Overload Class 0 follwed by last digit of MIN SID Alpha Tag Control disable Note 3 During editing Phone it is not possible to enter and P Pause Note 4 If the seting value for SID is not in the valid range from 0 to 32767 the normal origi...

Page 36: ...ven SIDs Secondary Paging Channel 708 for odd SIDs otherwise 737 for even SIDs Access Method 1 active Overload Class 0 follwed by last digit of MIN SID Alpha Tag Control disable NAM2 Validity 1 Note 2 If the NAM Number is set to 1 the NAM1 is programmed as same as 1 part Note 3 During editing Phone it is not possible to enter and P Pause Note 4 If the seting value for SID is not in the valid range...

Page 37: ...80 20 16 V Y5 V TP 1005 2 2203 005061 C118 C CERAMIC CHIP 100 nF 80 20 16 V Y5 V TP 1005 2 2203 005061 C119 C CERAMIC CHIP 100 nF 80 20 16 V Y5 V TP 1005 2 2203 005061 C120 C CERAMIC CHIP 100 nF 80 20 16 V Y5 V TP 1005 2 2203 000679 C121 C CERAMIC CHIP 0 027 nF 5 50 V NP0 TP 1005 2 2203 005065 C122 C CERAMIC CHIP 1000 nF 80 20 10 V Y5 V TP 1608 2 2203 005061 C124 C CERAMIC CHIP 100 nF 80 20 16 V Y...

Page 38: ... 000167 C162 C TA CHIP 2 2 uF 20 16 V TP 3216 2 2404 001105 C163 C TA CHIP 10 uF 20 6 3 V GP TP 2012 2 2404 001105 C164 C TA CHIP 10 uF 20 6 3 V GP TP 2012 2 2404 001105 C165 C TA CHIP 10 uF 20 6 3 V GP TP 2012 2 2203 005065 C166 C CERAMIC CHIP 1000 nF 80 20 10 V Y5 V TP 1608 2 2404 001105 C167 C TA CHIP 10 uF 20 6 3 V GP TP 2012 2 2203 005061 C168 C CERAMIC CHIP 100 nF 80 20 16 V Y5 V TP 1005 2 2...

Page 39: ...HIP 100 nF 80 20 16 V Y5 V TP 1005 2 2203 005061 C220 C CERAMIC CHIP 100 nF 80 20 16 V Y5 V TP 1005 2 2203 000995 C221 C CERAMIC CHIP 0 047 nF 5 50 V NP0 TP 1005 2 2203 000995 C222 C CERAMIC CHIP 0 047 nF 5 50 V NP0 TP 1005 2 2203 000254 C223 C CERAMIC CHIP 10 nF 10 16 V X7R TP 1005 2 2203 005061 C230 C CERAMIC CHIP 100 nF 80 20 16 V Y5 V TP 1005 2 2203 005061 C233 C CERAMIC CHIP 100 nF 80 20 16 V...

Page 40: ...35 C CERAMIC CHIP 0 1 nF 5 50 V NP0 TP 1005 2 2203 005061 C336 C CERAMIC CHIP 100 nF 80 20 16 V Y5 V TP 1005 2 2203 000233 C337 C CERAMIC CHIP 0 1 nF 5 50 V NP0 TP 1005 2 2203 000254 C338 C CERAMIC CHIP 10 nF 10 16 V X7R TP 1005 2 2203 000233 C339 C CERAMIC CHIP 0 1 nF 5 50 V NP0 TP 1005 2 2203 001259 C340 C CERAMIC CHIP 0 008 nF 0 5pF 50 V NP0 TP 1005 2 2203 000438 C341 C CERAMIC CHIP 1 nF 10 50 ...

Page 41: ...7R TP 1005 2 2203 000233 C386 C CERAMIC CHIP 0 1 nF 5 50 V NP0 TP 1005 2 2203 005393 C387 C CERAMIC CHIP 0 005 nF 0 1pF 50 V NP0 TP 1005 2 2203 005061 C388 C CERAMIC CHIP 100 nF 80 20 16 V Y5 V TP 1005 2 2203 001259 C389 C CERAMIC CHIP 0 008 nF 0 5pF 50 V NP0 TP 1005 2 2203 000696 C390 C CERAMIC CHIP 0 002 nF 0 25pF 50 V NP0 TP 1005 2 2203 000696 C392 C CERAMIC CHIP 0 002 nF 0 25pF 50 V NP0 TP 100...

Page 42: ...uF 20 6 3 V GP TP 2012 2 2203 005061 C429 C CERAMIC CHIP 100 nF 80 20 16 V Y5 V TP 1005 2 2203 005061 C430 C CERAMIC CHIP 100 nF 80 20 16 V Y5 V TP 1005 2 2203 000885 C433 C CERAMIC CHIP 4 7 nF 10 25 V X7R TP 1005 2 2404 001240 C434 C TA CHIP 1 uF 20 10 V TP 1608 2 2203 000254 C435 C CERAMIC CHIP 10 nF 10 16 V X7R TP 1005 2 2203 001210 C442 C CERAMIC CHIP 8 2 nF 10 16 V X7R TP 1005 2 2203 000254 C...

Page 43: ...0 F302 FILTER SAW 130 05MHz 0 024MHz 10 5KHz 0 5dB TP 2 2904 001173 F304 FILTER SAW 881 5MHz 25MHz 12 5MHz 2dB TP 12 5MHz 3 5dB DC 2 4709 001216 F305 FREQ ISOLATOR 824 894 1850 1990MHz 12dB 0 5dB 2 2909 001119 F306 FILTER DUPLEXER 881 5MHz 836 5MHz 4 3dB TP 56dB 40dB 2 2904 001172 F309 FILTER SAW 836 5MHz 25MHz 12 5MHz 1 5 TP 12 5MHz 2 5dB DC 2 2904 001172 F310 FILTER SAW 836 5MHz 25MHz 12 5MHz 1 ...

Page 44: ...21M TP 2 7 V 10mA 2 2809 001242 OSC302 OSCILLATOR VCTCXO 14 4MHz 2ppm 0 2ppm TP 2 8 V 2 2806 001243 OSC303 OSCILLATOR VCO 175 05 210 09MHz TP 2 7 V 5mA 2 GH41 00118A PCB PCB STHN270 STH N270 FR 4 6 0 8T 118x140 2 0504 000172 Q101 TR DIGITAL RN2104 PNP 100 mW 47K 47K SSM TP 2 0501 002318 Q102 TR SMALL SIGNAL UMW8N NPN 150 mW UMT6 TP 27 270 2 0504 000172 Q103 TR DIGITAL RN2104 PNP 100 mW 47K 47K SSM...

Page 45: ... R122 R CHIP 36 kohm 5 1 16 W DA TP 1005 2 2007 000636 R123 R CHIP 270 kohm 5 1 16 W DA TP 1005 2 2007 000148 R124 R CHIP 10 kohm 5 1 16 W DA TP 1005 2 2007 008163 R125 R CHIP 86 6 kohm 1 1 16 W DA TP 1005 2 2007 000148 R126 R CHIP 10 kohm 5 1 16 W DA TP 1005 2 2007 000148 R127 R CHIP 10 kohm 5 1 16 W DA TP 1005 2 2007 000140 R128 R CHIP 1 kohm 5 1 16 W DA TP 1005 2 2007 000148 R129 R CHIP 10 kohm...

Page 46: ...07 000170 R205 R CHIP 1 Mohm 5 1 16 W DA TP 1005 2 2007 000162 R206 R CHIP 100 kohm 5 1 16 W DA TP 1005 2 2007 000162 R207 R CHIP 100 kohm 5 1 16 W DA TP 1005 2 2007 000157 R208 R CHIP 47 kohm 5 1 16 W DA TP 1005 2 2007 000162 R209 R CHIP 100 kohm 5 1 16 W DA TP 1005 2 2007 000162 R211 R CHIP 100 kohm 5 1 16 W DA TP 1005 2 2007 000758 R212 R CHIP 330 kohm 5 1 16 W DA TP 1005 2 2007 000162 R213 R C...

Page 47: ...7 003112 R303 R CHIP 27 ohm 5 1 16 W DA TP 1005 2 2007 003013 R304 R CHIP 2 4 kohm 5 1 16 W DA TP 1005 2 2007 002797 R305 R CHIP 560 ohm 5 1 16 W DA TP 1005 2 2007 000172 R306 R CHIP 10 ohm 5 1 16 W DA TP 1005 2 2007 000172 R307 R CHIP 10 ohm 5 1 16 W DA TP 1005 2 2007 007771 R308 R CHIP 0 ohm 5 1 16 W DA TP 1005 2 2007 001311 R309 R CHIP 270 ohm 5 1 16 W DA TP 1005 2 2007 002797 R310 R CHIP 560 o...

Page 48: ...01311 R346 R CHIP 270 ohm 5 1 16 W DA TP 1005 2 2007 000172 R347 R CHIP 10 ohm 5 1 16 W DA TP 1005 2 2007 000151 R348 R CHIP 15 kohm 5 1 16 W DA TP 1005 2 2007 000138 R349 R CHIP 100 ohm 5 1 16 W DA TP 1005 2 2007 000172 R350 R CHIP 10 ohm 5 1 16 W DA TP 1005 2 2007 000162 R351 R CHIP 100 kohm 5 1 16 W DA TP 1005 2 2007 000138 R354 R CHIP 100 ohm 5 1 16 W DA TP 1005 2 2007 000172 R356 R CHIP 10 oh...

Page 49: ... A 2 1003 001300 U104 IC DRIVER SM8142BD EL SOJ 8P 110MIL TP PLASTIC 2 1203 001979 U105 IC VOLTAGE REGULATOR 5320 SSOP 8P 110MIL PLASTIC 6 12 V 2 0505 001462 U106 FET SILICON 1905 P 8 V 0 6A 0 51 ohm 0 3 W SOT 363 2 0506 001054 U107 TR ARRAY IMD10A NPN PNP 2 300 mW SMT6 TP 68 100 600 2 1203 001302 U108 IC POSI ADJUST REG 5205 SOT 23 5P 119MIL PLASTIC 2 0505 001462 U109 FET SILICON 1905 P 8 V 0 6A ...

Page 50: ...V 30mA SOD 523 TP 1 GH92 00863A PBA MAIN STHN270 STH N270 BRAZ MAIN PBA 1 6001 000464 SCREW MACHINE PH M1 4 L4 BLACK SM10C 1 6001 001460 SCREW MACHINE CH M1 4 L2 3 BLK SWRCH18A FP 1 GH44 00145A CHARGER SCHN100 TC TCH020EBE SCH N100 AC DC 110 220 1 GH71 00325A NPR ANT DUMMY PLATE STH N271 ZN AU 1 GH72 01753A PMO KEY PAD STH N271 EF TYPE BLK 1 GH73 00064A RMO EAR JACK RUBBER SCH 900 RUBBER 9X7X0 8 B...

Page 51: ...32 7XT0 2 3 GH75 01030A MEC HINGE STH N271 SEC BLK 1 GH97 01770A MEA REAR STHN270 STH N271 USA COLM 2 GH75 00774A MEC SUA REAR STH N271 D GRY 3 GH68 00973B LABEL R QUALCOMM SCH A300 VINYL T0 12 10 4 TRP 3 GH70 10633A IPR LOCKER SPRING SCH 750 STS304 T0 3 3 GH72 01746A PMO REAR COVER STH N271 PC D GRY G4358 3 GH72 01754A PMO BATTERY LOCKER STH N271 PC D GRY G4358 1 GH97 01777A MEA ETC SHIELD STH N2...

Page 52: ...SCH 1900 ART 100X155 T0 1 WHT 2 GH69 00800A BOX P UNIT MAIN STH N271 SC300G E KOL 188X135X72 2 GH69 00815A CUSHION CASE STH N271 HIPS T1 180X130X76 2 GH69 11279A BOX P MASTER CH CHINA SGH 600 SW 3 530X510X187 2 GH69 30503A BAG STD BATT PE T0 06 70X170 SCH 1011 1 3001 001210 SPEAKER 1 GH42 00097A ANTENNA STHA271 1538 1LSSUE6 STH A271 824 849MHZ 1 GH43 00294A BATTERY 900M D GRY 1LP473465B STHN270 1 ...

Page 53: ...y change without notice 8 1 8 STH N271 Exploded View and its Parts List 1 STH N271 Cellular phone Exploded View 11 14 12 13 10 2 10 3 10 4 10 5 10 6 13 1 13 2 13 3 15 SAM SUNG 1 2 1 8 1 3 1 4 1 5 1 6 3 4 5 1 6 8 7 9 10 1 1 2 1 7 10 1 ...

Page 54: ...GH73 00492A 6001 000464 GH71 00307A 6001 001460 GH59 00175A GH42 00097A GH73 00490A GH75 00774A GH72 01746A GH70 10633A GH72 01754A 6001 000464 GH43 00294A GH75 01169B GH75 01170B GH72 01748A GH72 01752A GH72 01745A GH73 00491A GH75 00776A GH75 00794A GH75 01030A 3001 001210 GH82 00074A GH07 00055A GH72 01753A GH73 00489A GH75 01062A GH59 00176A GH73 00567A GH97 01777A GH71 00435A GH73 00492A 6001...

Page 55: ...ist SAMSUNG Proprietary Contents may change without notice 8 3 3 Test Jig GH80 00614A 4 TC GH44 00145G 220V Israel Serial Cable Power Supply Cable 5 RF Test Cable GH39 00092A 6 Cigarette Lighter Adaptor GH44 00091A 7 Test Cable GH39 00090A ...

Page 56: ...SAMSUNG Proprietary Contents may change without notice 9 1 9 STH N271 Block Diagrams 1 STH N271 Base Band Part ...

Page 57: ...SAMSUNG Proprietary Contents may change without notice 9 2 STH N271 Block diagrams 2 STH N271 Radio Part ...

Page 58: ...SAMSUNG Proprietary Contents may change without notice 9 3 MEMO ...

Page 59: ...SAMSUNG Proprietary Contents may change without notice 10 1 1 STH N271 Main PCB Top Diagram 10 STH N271 PCB Diagrams ...

Page 60: ...STH N271 PCB diagrams SAMSUNG Proprietary Contents may change without notice 10 2 2 STH N271 Main PCB Bottom Diagram ...

Page 61: ...dy The main application program is checking all GPIO inputs periodically When press the END key during program is running the BATT and ON_SW signals will be connected This turns on Q107 Therefore ON_SW_SENSE that is connected to GPIO_0_5 U203_ C13 turned logic high to low The BEC checks this signal main application program enter to POWER OFF mode 1 2 BEC U203 interface The BEC U203 is mainly consi...

Page 62: ...SAMSUNG Proprietary Contents may change without notice 11 2 STH N271 Circuit Description Figure2 1 BEC interface and block diagram ...

Page 63: ... ports The communication ports includes the UART1 and 2 the JTAG and the SCI The UART1 supports HP equipment interface down loading and data service The UART2 and the JTAG are used for the software debugging The SCI supports the Diagnostic Monitor DM function FLASH ROM inside of U202 The 32Mbit FLASH ROM is used to store code of the application program Using the down loader program this applicatio...

Page 64: ... to minimize noise pickup The speaker output is amplified internally to enable direct connection to the speaker The second audio path connects to the headset jack The headset microphone and speaker are passed to the IFC s auxiliary input and output respectively The headset jack terminals indicate via the HEADSET_SENSE line when the headset is present as well as when the headset button is pushed vi...

Page 65: ...equency exactly connected to TXCO OSC302_1 Transmitter Interface The U101 receives TX_DATA1 U101_36 synchronized by control signals TX_SYNC TX_CLK U101_33 34 which come from BEC and translate this data as differential I Q signals TX_IN TX_I TX_QN TX_Q U101_61 60 58 57 or MOD signal U101_63 It transport this data to RF modulation part In addition the U101 uses PA_CNT U101_73 TX_PWR U101_68 for cont...

Page 66: ...ider dynamic Rx AGC automatic gain controller range the gain of U301 is controlled by PREAMP_G signal coming from U203 resulting in around 30 dB step gain change By checking the RSSI U203 decides to whether turn on U301 or not The amplified signal goes into F304 RF SAW filter in order to suppress the unwanted band data The signal coming out from F304 inflows to the pin 45 1st Rx mixer input of U30...

Page 67: ...5 MHz IF VCO with the internal IF PLL of U304 In the TDMA mode Tx I Q signals coming from U101 are applied to the I Q modulator The modulated signal goes into the Tx AGC of U304 The Tx AGC has the 65 dB dynamic range The output of the Tx AGC enters the upconverter of U304 For the upconversion the local frequency source from OSC301 dual RF VCO is used as well The typical output power of the upconve...

Page 68: ...egulator Rx AGC Gain step RX_BAT BEC RFIC Receiver power control TX_BAT BEC RFIC Transmitter power control ANALOG_DIG BEC Oscillators Band control 0 Analog 1 Digital LOCK_DET RFIC BEC PLL lock detect status PLL_ON BEC Regulator PLL power control V_RF1 RFIC A_IF_IN RFIC IFC IF comparator input RX_Q RX_QN RFIC IFC Differential analog receive Q channel RX_I RX_IN RFIC IFC Differential analog receive ...

Page 69: ...125 86 6K 1 2 2UF C171 C128 100NF 16V Q107 2 3 1 D2 2 G1 5 G2 S1 1 4 S2 U106 D1 6 3 C174 2 VOUT2 VOUT3 3 100NF 7 CE1 CE2 6 5 CE3 GND 4 VDD 8 VOUT1 1 C148 100NF U110 27PF C106 VBAT C147 1UF NC R158 100K VCC R103 VBAT R144 VAUX 2 2K C160 10UF 6 3V 100NF C117 6 3V 10UF C156 10 1 2 5 6 G 3 4 R142 ZD101 1 2 3 4 5 Q106 2 2UF C157 16V C181 470PF 2 R111 57 6K 1 Q108 1 3 NC C152 SPK101 SPKHA 13 10K R127 VC...

Page 70: ... A12 NC4 NC5 C4 H1 NC6 NC7 H2 H3 NC8 NC9 H10 F VSS H8 A9 F VSS F WE C3 F WP E3 NC1 A1 H11 NC10 NC11 H12 B10 DQ7 DQ8 F8 F7 DQ9 F CE H7 F OE H9 D4 F RP F VCC D10 F VCCQ A10 C7 DQ13 DQ14 B9 B7 DQ15 DQ2 E9 E10 DQ3 DQ4 C9 C10 DQ5 DQ6 C8 G5 A7 A8 B4 B6 A9 DQ0 F9 F10 DQ1 DQ10 E8 E6 DQ11 DQ12 D7 G4 A17 A18 G3 E5 A19 A2 G8 A3 A20 G7 A3 A4 H5 H4 A5 A6 G6 G9 A1 A10 B5 A4 A11 A12 A8 A7 A13 A14 A6 A5 A15 A16 B...

Page 71: ...NF C429 27ohm R318 C464 1 5PF L312 4 7nH C378 NC 6 3V 10UF C360 C362 10PF C404 100PF 7 8 RFIN1 6 RFIN2 1 RFOUT1 RFOUT2 3 U301 4 EN1 EN2 5 GND 2 GND R368 C369 100NF 33K R327 150K C419 100NF NC C443 270 R371 15 R346 R384 10 10PF C459 4 7K R343 R313 1K 5 6NF C374 C373 27PF 2 2NF C353 C376 33NF NC R392 C389 8PF L304 2 7nH C367 100NF OUT1 1 3 OUT2 VC1 6 VC2 4 0 R365 U303 2 GND 5 IN C431 100PF C418 R378...

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