GSM Mobile Cellular Phone SGH-600 SERVICE GSM Mobile Cellular Phone Manual CONTENTS 1. General Description 2. Circuit Description 3. Specification 4. Manual Adjustment Test Procedure 5. Troubleshooting C 6. PCB Views / /OK 1 . 2 ABC 3 4 GHI 5 JKL 6 MNO PQRS 8 TUV 9 WXYZ 7 DEF 7. Electrical Parts List 0 8. Exploded Views and Parts List 9. Block Diagram 10.
ELECTRONICS Samsung Electronics Co.,Ltd.
1. General Description 1-1 GSM System 1-1-1 Calls GSM¨ is an acronym for Global System for Mobile communications©, using TDMA for wide-area cellular operation. The GSM system consists of the sub-systems shown; The Mobile Station (MS) talks to the Base Station System (BSS) via an RF air interface. The Base Station System (BSS) consists of Base Transceiver Station (BTS) and a Base Station Controller (BSC). The microwave link between BTS and BSC is called an Abis interface.
General Description 1-1-4 GSM TDMA Timeslots, Frames, and Multiframes TCH Multiframe 0 1 BCH Multiframe TDMA Frame Timeslot 2 0 0 T 3 1 1 4 2 2 Information ... 3 3 F ... 4 4 ... ... 5 Midamble ... 6 F ... ... ... ... ... 24 25 ... ... 49 T Guard 50 7 Information < Fig. 2 Concept of Frames and Timeslots > 1-1-5 Logical Channel TCH (Traffic CH) is used mainly for transferring the speech information, and the BCH (Broadcast CH) is related to control information.
General Description 1-2 GSM HHP Feature 1-2-1 Main Set (HHP) The main set is a microprocessor (KERNEL5)-controlled, full duplex radiotelephone system that provides the user with GSM cellular service through cell sites linked to control centers. It also provides functions related to frequency control, power control, and many user-convenience feactures. 1-2-2 Desktop Charger The DTC is designed to charge batteries from commercial mains. The charger has two battery receptacles.
General Description MEMO 1-4 Samsung Electronics
2. Circuit Description 2-1 RF Part 2-1-1 Frequency Generator The 13MHz reference clock (VCTCXO) drives the logic and RF part. The 13 MHz reference is controlled by the logic (10bits DAC minimum) and is kept to a frequency error less than ±0.1 ppm after synchronization with the GSM network. A 540 MHz oscillator is divided by 2 to generate a fixed 270 MHz VHF LO used in the TX I,Q modulator and mixed by 270 MHz.
Circuit Description 2-1-3 Receiver The incoming RF signal passes through the integrated lowpass filter and TX/RX switch. This is followed by a 947 MHz SAW Band Pass Filter and a bipolar low-noise amplifier (LNA). The HD155101BF includes an active bias circuit which stabilizes the DC operating point of the LNA. The RF signal passes via a second RF SAW filter to the first receive mixer. This mixer is implemented as a Gilbert cell within the HD155101BF.
Circuit Description 2-2-2 ROM1 & SRAM 8M (X16) Flash ROM and 2M (X8) bit SRAM are used. Two devices are merged in one package. This device is a combination memory organized as 524, 288 x 16 bit flash memory and 262, 144 x 8 bit static RAM in one package. 2-2-3 ROM2 A 8M (X16) bit Flash Memory is used for the voice recognition and voice memory. This device is an 8, 388, 608 bit flash memory with batch chip erasing, sector erasing, and byte and word writing using a single 3V power supply.
Circuit Description 2-4 POWER MANAGEMENT 2-4-1 DC/DC Converter Our 1 cell Li-ion battery solution requires a up-converting DC/DC conversion circuit for efficiency improvement. The device is a PWM Step-up DC/DC converter IC. Specification is as below; ¥ Vin: 2.75 V ~ 4.2 V ¥ Vout: 3.3 V ~ 4.1 V ¥ Ripple: less than 50 mVpp ¥ Efficiency: typ. 85 % (up to 96%) 2-4-2 Charger Circuitry The simplified built-in charger circuit diagram is as below ; LDO 3.6V 3.6V BATT DC/DC 3.3V PAM 3.
Circuit Description 2-5 RADIO INTERFACE 2-5-1 RF Block Diagram 45 MHz LC FILTER 225 MHz AGC DAC IF SAW RX SAW RX SAW LNA 947 MHz ANTENNA SOCKET Q AGC AMPLIFIER 270 MHz Active Bias ÷2 HARMONIC FILTER AFC DAC 45MHz 1172 MHz 13 MHz TX/RX SWITCH UHF VCO DUAL SYNTH ÷6 RF Buffer VHF VCO 90o SHIFT ÷2 90o SHIFT ÷2 540 MHz 270 MHz 902 MHz DETECTOR I IQ DEMOD 270 MHz POWER AMPLIFIER PHASE DET.
Circuit Description 2-6 AUDIO 2-6-1 Audio Inputs The Handset provides two audio inputs: ¥ Built in microphone ¥ Connection for external microphone A microphone biasing amplifier reduces component count in the overall system design: ¥ Supply: 2.2 V regulated to ±20 % ¥ Different output to eliminate possible coupling noise problems, MICBIASP and MICBIASN ¥ Maximum current: 500 uA ¥ Maximum load: 200 pF 2-7 EXTERNAL INTERFACE A 18 pin connector is mounted on the bottom corner of the PCB.
Circuit Description 2-8-2 Equalizer MAJOR FEATURES ¥ Frequency Correction Burst Correction ¥ Frequency Correction Burst Frequency Measurement ¥ Synchronization Burst Long Preamble Correlation ¥ Normal Burst Short Preamble Correlation ¥ Channel Impulse Response Generation ¥ Possible Received Value Generation ¥ Data Equalization ¥ Carrier Power Measurement ¥ Doppler Shift Measurement and Correction ¥ Scaled 7-Bit Soft Decision ¥ I and Q component recovered from Received Data 2-9 VOCODER SPECIFICATION 2-9-1
Circuit Description 2-10 Desk Top Charger 2-10-1 Charging The desk-top charger contains switching regulator to charge a lithium battery from an DC/DC adaptor. The battery type is detected at pin 15 (MPU) through U5 ( front port) and U26 (rear port). Battery charging current is turned into Vi. Vi is measured at pin 12 (MPU) after R32 and C23 to cancel the noise. When the battery voltage is too low, the charging circuit turns to trickle mode using Q9 and Q11.
Circuit Description 2-11 Cigar Lighter Adaptor (CLA) 2-11-1 General Description The CLA is a regulated switched-mode power supply designed for use with a portable HHP. The power supply is connected directly to the phone and provides a voltage path for charging a battery installed in the hand-held portable phone. 2-11-2 Circuit Description The input voltage range of CLA is from 12 Vdc to 30 Vdc, and the nominal voltage is 13.7 Vdc. The output current is 600 mA.
Circuit Description 2-13 Hands Free Car kit 2-13-1 General Description Many states and countries are considering legislation requiring mobile phone users to operate in Hands-Free mode while driving. Feature of the hands free kit are: - Power adaptor (600 mA) from vehicle battery to GSM battery pack. - Ignition sensor for automatic power ON/OFF. - Car stereo mute function in Hands-Free mode, with programmable output level. - External microphone input. - Loudspeaker output. - Hands-Free operation.
3. Specification 3-1 General Specification 3-1-1 Frequency Range 3-1-11 Voice Coder Bit Rate: 13 kbits/sec - Transmit (Uplink): 890 ~ 915 MHz - Receive (Downlink): 935 ~ 960 MHz 3-1-12 Input / Output Impedance : 50½ 3-1-2 Channel Spacing : 200 kHz 3-1-13 VCO Frequency 3-1-3 Number of Channels: 124 - TX VCO : 890 ~ 915 MHz, - UHF VCO : 1160 ~ 1185 MHz - VHF VCO : 540 MHz 3-1-4 Frequency Spacing: 45 MHz 3-1-14 IF 3-1-5 Modulation Data Rate - 270.833 kbits/sec 3-1-6 Frame Period: 4.
Specification 3-2 Transmitter Specification 3-2-1 Power Power Peak Control Level Power (dBm) 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 Norminal (dB) 33 31 29 27 25 23 21 19 17 15 13 11 9 7 5 ±2 ±3 ±3 ±3 ±3 ±3 ±3 ±3 ±3 ±3 ±3 ±5 ±5 ±5 ±5 Extreme (dB) dB dB dB dB dB dB dB dB dB dB dB dB dB dB dB ±2.5 dB ±4 dB ±4 dB ±4 dB ±4 dB ±4 dB ±4 dB ±4 dB ±4 dB ±4 dB ±4 dB ±6 dB ±6 dB ±6 dB ±6 dB 3-2-2 Power Ramping Time Level The power-time template requirements for mobile stations also apply to base stations.
Specification 3-3 Synthesizer Specification 3-3-1 General Specification - Frequency Hopping : 1 Channel to < 3o rms in < 500 mS - Phase Noise: < 3o RMS 3-3-2 IF Synthesiser - Synthesizer Frequency: 540 MHz - Output Signal Drive Level: -10 dB - 2nd IF LO Output Frequency FIR: 45 MHz 3-3-4 Phase Noise Specification Offset (kHz) Phase Noise (dBc/Hz) ± 200 ± 250 ± 400 > 600 > 1200 > 1800 > 3000 > 6000 > 10.0 MHz > 20.0 MHz > 30.
Specification MEMO 3-4 Samsung Electronics
5. Troubleshooting 5-1 Main Set 5-1-1 RX Sensitivity Problem RX ON (RF Input - Frequency : CH Freq.
Troubleshooting 5-1-2 TX Power Problem CH.60 (902 MHz) & Tx Carrier ON (Power level 5) F201 Input ≥ - 10 dBm? No Yes RF VCO ≥ -10dBm(1172MHz)? IF VCO ≥ -10dBm(540MHz)? TX VCO ≥ -10dBm (902MHz)? No Resolder C147, C146, R135, R133, R134, R132, R131, C142, C138, C139, R504, C165, C927, R121, R120, R123, C130 or replace if damaged. Yes Check R208,R209,R210, C943, F201 or replace if damaged.
Troubleshooting 5-1-3 Base Band POWER ON ‘POWER ON’ does not work Give Battery Power Check the Battery Voltage is less than 3.2V Yes Charge the Battery No U402 pin 5 3.6V (when pushing pwr Key) No Check the path from BATT to U402 Yes U402 pin 2, 3, 4 3.
Troubleshooting INITIAL OPERATION Initial Failure Check for the clock signal at U408 pin 83? No Check the clock generation circuit (related to U201 and U200) No Check and repair the important signals of U408 as follows Yes Is it present ‘CSROM’ signal on U833 (flash rom) pin 26? Yes U408 pin 28 = ‘H’ (SYSRST) No Check U843 Yes U408 pin 77 = ‘H’ (BOOT) No Check R433 and related circuit No Check R428 and related circuit Yes U408 pin 84 = ‘H’ (DACT) Yes U408 pin 37 (BUSREQ), pin 75 (MSIZE)
Troubleshooting BACKLIGHT Checking the Menu Backlight ‘ON’ mode? No Select backlight ‘ON’ mode Yes U408 pin 76 and R426 = ‘H’ ? No Check the U450 and R426 Yes Is Q400 drived? No Check R425, R426 and Q400 Yes No LED on? Check the solder status of the LEDS and the related resistors Yes END Samsung Electronics 5-5
Troubleshooting RING INDICATOR LED Ring Indicator LED does not work U408 pin 106 = ‘H’? No Check the U408 Yes Is U403 Drived? No Check the U403 Yes Check the LED END 5-6 Samsung Electronics
Troubleshooting SIM CARD PART Phone can’t access SIM card After power ON, U400 pin 4 and 5 = ‘H’? No Check the related of U402 Yes Is there any opened-connection between U400 and U408? Yes Resolder the connection between U400 and U408 No Check continuity from U408 pin 14 to U400 pin 3 No Check the continuity from U408 pin 10 to U400 pin 1 No Check the continuity from U408 pin 9 to U400 pin 2 No After Power ON, Check SIMDATA Signal on U400 pin 3 in a few second Yes After SIM card insert, Ch
Troubleshooting KEY DATA INPUT Check Initial operation Does the scanning Signals come out from pin 140, 141, 142, 143, and 144 of U408? No Resolder pin 140, 141, 142, 143 and 144 of U408 (kernel) No Check the bad contact on any key and clean the keypad area on the B’D Yes Resolder U408 pin 1, 2, 3, 4 and 5 Is the key data input OK? Yes END 5-8 Samsung Electronics
Troubleshooting ALERT TONE Abnormal Alert tone Check the connection from Buzzer to U308? No Resolder the connection from Buzzer to U308 Yes No U307 pin 5 (AVCC) = 3.
Troubleshooting MICROPHONE PART Microphone does not work Resolder the connection from Mic to J1001 (Ear-jack) Check the connection from MIC to J1001 (Ear-jack) U307 pin 5 (AVCC) 3.
Troubleshooting SPEAKER PART Speaker does not work Check the connection from Speaker to SPK+ and SPK-? No Resolder the connection from Speaker to SPK+ and SPK- Yes U307 pin5 (AVCC) = 3.
Troubleshooting CHARGING PART Abnormal charging part TA is OK? No Replace TA Yes Is the LCD Display normal? No Yes Check the U303 pin 3 4.
7. Electrical Parts List 7-1 Main Top LOCATION NO.
Electrical Parts List LOCATION NO.
Electrical Parts List LOCATION NO. DESCRIPTION SEC CODE C120 C-CHIP, 4.7nF, 10%, 50V, TP, 1608 2203-000888 C138, C949 C-CHIP, 470pF, 10%, 50V, TP, 1005 2203-000941 C131, C134 C-CHIP, 47pF, 5%, 50V, TP, 1005 2203-000995 C172 C-CHIP, 4pF, 0.25pF, 50V, TP, 1005 2203-001017 C142 C-CHIP, 6.8nF, 10%%, 50V, TP, 1608 2203-001103 C167, C168, C174 C-CHIP, 8pF, 0.5pF, 50V, TP, 1005 2203-001259 C160 C-CHIP, 0.5pF, 0.
Electrical Parts List 7-2 Main Bottom LOCATION NO.
Electrical Parts List LOCATION NO.
Electrical Parts List LOCATION NO. DESCRIPTION SEC CODE C-CHIP, 10nF, 10%, 16V, TP, 1005 2203-000254 C203, C220, C451, C455, C935, C936 C-CHIP, 1nF, 10%, 50V, TP, 1005 2203-000438 C446, C459 C-CHIP, 2.2nF, 10%, 50V, TP, 1005 2203-000489 C210 C-CHIP, 220pF, 10%, 50V, TP, 1005 2203-000585 C213, C956 C-CHIP, 22pF, 5%, 50V, TP, 1005 2203-000628 C216, C221 C-CHIP, 27pF, 5%, 50V, TP, 1005 2203-000679 C445, C464 C-CHIP, 3.3nF, 10%, 50V, TP, 1005 2203-000714 C447, C457 C-CHIP, 3.
Electrical Parts List LOCATION NO. DESCRIPTION SEC CODE L401, L403 Inductor, 680uH, 20%, 3225 2703-001417 L204 Inductor, 100nH, 5%, 1608 2703-001513 L208 Inductor, 33nH, 5%, 1608 2703-001543 L400 Inductor, 22uH, 20%, 6.0x6.0x2.9mm 2703-001683 U201 VCTCXO, TCO-999 2809-001212 F200 FILTER-SAW, FAR-F5CJ-947M50-L213 2904-001094 F201 TX SAW FILTER, SAFC902.
Electrical Parts List MEMO 7-8 Samsung Electronics
8.
Exploded View and its Parts List 8-1 Main Exploded View 1 2 8 3 9 4 10 5 7 11 6 12 16 13 17 15 14 20 22 18 19 21 23 26 28 24 29 27 25 30 34 31 35 32 36 37 33 38 39 40 8-2 Samsung Electronics
Exploded View and its Parts List 8-2 Main Parts List NO 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 DESCRIPTION TAPE WINDOW BOHO LCD WINDOW WINDOW TAPE LED LENS FRONT COVER STRIP FINGER A STRIP FINGER C KEY VOLUME FLIP COVER MAGENETIC MAGENETIC COVER HINGE HOUSING SHAFT HINGE CAM HINGE HINGE SPRING HOUSING CAP SPONGE LCD 3 x 4 KEY RUBBER BUZZER KEY PBA RUBBER MIC MIC COVER ISO-TAPE SHIELD CAN MAIN PBA RUBBER CONNECTOR ANTT BRACKET MOTOR AN
Exploded View and its Parts List 8-3 Charger Exploded View 1 2 6 5 3 4 7 8 9 10 11 12 8-4 Samsung Electronics
Exploded View and its Parts List 8-4 Charger Parts List NO DESCRIPTION CODE Q’TY 1 CHARGER UPPER DMM000043 1 2 GATE LABEL DMM500024 1 3 LED CAP DMM000053 2 4 BATTERY HOUSIN DMM000044 1 5 HANDY LOCKER DMM000046 2 6 SCREW M2.
Exploded View and its Parts List 8-5 Travel Adaptor B A C 8-6 Travel Adaptor Parts List 8-6 Type SEC Code Remark A B C GH44-30548A GH44-30549A GH44-30547A CHINA EUROPE UNITED KINGDOM Samsung Electronics
Exploded View and its Parts List 8-7 Ciger Light Adaptor 8-8 Ciger Light Adaptor Part List Description Ciger Light Adaptor Code Samsung Electronics SEC Code Remark GH44-30546A BLACK 8-7
Exploded View and its Parts List 8-9 Hands Free Kit Diagram 8-8 Samsung Electronics
Exploded View and its Parts List 8-10 Boost Kit Samsung Electronics 8-9
Exploded View and its Parts List 8-11 Hands Free Car Kit Option 8-11-1 Hands Free Car Kit Ass’y Hands-free box Micro Phone Orange (lgnition) Brown (Stereo Mute) Red (Vehicle Battery) Black (GND) Bracket Phone Cradle Antenna Clam Shell Mount Option Code: GH96-01150A 8-10 Samsung Electronics
Exploded View and its Parts List 8-11-2 Hands Free Cradle Exploded View 1 2 3 4 5 8 4 7 6 9 7 10 12 11 13 14 18 15 16 17 Samsung Electronics 8-11
Exploded View and its Parts List 8-11-3 Cradle Mechanism Part List NO DESCRIPTION SEC. CODE Q’TY 1 GATE LABEL GH68-11107A 1 2 CRADLE UPPER GH72-41519A 1 3 SOCKET PLATE GH70-10526A 1 4 LOCKER GH72-41521A 2 5 TORSION SPRING GH61-70012A 2 6 EJECTOR PIN(R) GH72-41524A 1 7 EJECTOR SPRING GH70-10520A 2 8 EJECTOR PIN(L) GH72-41523A 1 9 CLAMP GH72-41522A 1 10 SCREW M2.
9. Block Diagram 9-1 RF Block Diagram 935 ~ 960 MHz RX SAW filter LNA 225 MHz 45 MHz IF SAW filter LC filter I&Q Demo. AGC O 45 MHz 270 MHz RX SAW I bias circuit HD 155101BF 1160 ~ 1185 MHz VCTCXO 13MHz 90 deg Shift /2 /2 RF VCO LMX2336L Dual synth. Ant S/W PLL1 B.B. Block /6 PLL2 540 MHz TCO-999 90 deg Shift /2 LPF 270 MHz 890 ~ 915 MHz 270 MHz P.A.
9-2 Baseband Block Diagram System Clock +3V SIM Card SIM Card Serial Data Interface GSM/DCS Memory VOCODER +5V SIM Card I/O Interface System RAM 2M Battery Voltage B.B Interface A/D Interface System memory Flash ROM 8M Battery Temperature RF I/O BB Filter GSM/DCS 3V Tx KERNEL 5 AGC, AFC RF Interface 3.0V EEPROM 64K 3V SYNTH PLL 3V BRIGHT 8M ROM (Voice Recognition) Charging Circuit KeyPad DC/DC Converter LDO Regulators 3.6V Li_lon Battery (3.6V) Graphic LCD 3.0V AVCC 3.
INPUT 9V DC Samsung Electronics Switching TR Circuit UVLO Overcurrent Protector CHOKE COIL Feed Back Overheat Protector Reference Voltage 2nd Regulator Static Current Circuit Static Voltage Circuit MPU LED Filter FRT 4.1V FET Switch REAR 4.
9-4 Power Ignition (12V-28V) Calibration Stabilizer EEPROM Power Control RX Amp TX Amp Audio Amp Data Communication Speaker Microphone Cradle Volume Control CODEC DSP MICOM Current Detector Voltage/Current Feed Back DC/DC Regulator 5V Regulator 9-4 HFK Block Diagram Samsung Electronics
