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Samsung SGH-A300 Service Manual
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Samsung SGH-A300 Service Manual

Samsung SGH-A300 Service Manual

Dual band gsm telephone
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Download this manual See also: Owner's Manual, Manual
SERVICE
DUAL BAND GSM TELEPHONE
DUAL BAND GSM
TELEPHONE
SGH-A300
Manual
CONTENTS
1. Exploded Views and Parts List
2. Electrical Parts List
3. Block Diagrams
4. PCB Diagrams
5. Flow Chart of Troubleshooting and
Circuit Diagram

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Summary of Contents for Samsung SGH-A300

  • Page 1 DUAL BAND GSM TELEPHONE SGH-A300 SERVICE Manual DUAL BAND GSM TELEPHONE CONTENTS 1. Exploded Views and Parts List 2. Electrical Parts List 3. Block Diagrams 4. PCB Diagrams 5. Flow Chart of Troubleshooting and Circuit Diagram...

  • Page 2: Exploded Views And Parts List

    SGH-A300 GSM Telephone Parts List SGH-A300 Travel Adapter SGH-A300 Travel Adapter Parts List SGH-A300 Cigarette Lighter Adaptor SGH-A300 Cigarette Lighter Adapter Parts List SGH-A300 Test Jig 1-7-1 SGH-A300 Test Jig Cable 1-7-2 SGH-A300 RF Jig Cable 1-7-3 SGH-A300 Test Jig 2.

  • Page 3: Exploded View And Its Parts List

    1. Exploded View and its Parts List 1-1 SGH-A300 GSM Telephone Exploded View 12-1 12-2 12-3 12-4 12-5 24-1 24-2 24-3 24-4 24-5 24-6 SAMSUNG Proprietary-Contents may change without notice...
  • Page 4 Exploded view and its Part List 1-2 SGH-A300 GSM Telephone Parts List SEC CODE Location No. Description Remark Blue-Tinted Silver Silver DUAL WINDOW GH72-01793F GH72-01793E SUA, FOLDER UPPER GH75-01004B GH75-01004A DECORATION GH71-00311B GH71-00311C SPONDGE-DUAL LCD GH74-00819A GH74-00819A FOLDER UPPER GH72-01795D...
  • Page 5 Exploded view and its Part List 1-3 SGH-A300 Travel Adapter 1-4 SGH-A300 Travel Adapter Parts List TYPE SEC CODE REMARK GH44-00171A CHINA GH44-00184A EUROPE GH44-00171C UNITED KINGDOM Gh44-00171E TAIWAN SAMSUNG Proprietary-Contents may change without notice...
  • Page 6 Exploded view and its Part List 1-5 SGH-A300 Cigarette Lighter Adaptor 1-6 SGH-A300 Cigarette Lighter Adapter Parts List DESCRIPTION SEC CODE REMARK Cigarette Lighter Adapter Code GH44-00195A BLACK SAMSUNG Proprietary-Contents may change without notice...
  • Page 7 Exploded view and its Part List 1-7 SGH-A300 Test Jig (GH80-00161A) 1-7-1 SGH-A300 Test Jig Cable 1-7-2 SGH-A300 RF Jig Cable (GH39-00096A) (GH39-00026A) SAMSUNG Proprietary-Contents may change without notice...
  • Page 8 Exploded view and its Part List 1-7-3 SGH-A300 Test Jig SAMSUNG Proprietary-Contents may change without notice...
  • Page 9 2. SGH-A300 Electrical Parts List Level SEC CODE REFERENCE DESCRIPTIONS Remark 3002-001101 AU600 88dB, 3.6 V, 100 mA, 2550Hz, TP 4302-001119 BAT200 3 V, 0.1MAH, -, -, 3.1 V, - 2203-002443 C100 0.33 nF, 10 %, 50 V, X7R, TP, 1005...
  • Page 10 C329 470 pF, 10 %, 50 V, X7R, TP, 1005, - 2203-000330 C330 0.012 nF, 5 %, 50 V, NP0, TP, 1005 2203-000836 C331 390 pF, 10 %, 50 V, X7R, TP, 1005, - SAMSUNG Proprietary-Contents may change without notice...
  • Page 11 C415 100 uF, 10 %, 6.3 V, LZ, TP, 4427 2203-005562 C416 10000 nF, +80-20 %, 10 V, Y5 V, TP, 3216 2203-005061 C417 100 nF, +80-20 %, 16 V, Y5 V, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 12 10 nF, 10 %, 16 V, X7R, TP, 1005, - 2203-000233 C530 0.1 nF, 5 %, 50 V, NP0, TP, 1005 2203-000233 C532 0.1 nF, 5 %, 50 V, NP0, TP, 1005 2203-000812 C533 0.033 nF, 5 %, 50 V, NP0, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 13 C618 100 nF, +80-20 %, 16 V, Y5 V, TP, 1005 2203-000628 C620 0.022 nF, 5 %, 50 V, NP0, TP, 1005 2203-005065 C621 1000 nF, +80-20 %, 10 V, Y5 V, TP, 1608 SAMSUNG Proprietary-Contents may change without notice...
  • Page 14 CN602 BOX, 20P, 2R, 0.5mm, SMD-S, AUF 3710-001653 CN603 18P, 1R, 0.5mm, SMD-A, AUF 3711-004814 CN604 -, 2P, -, 2.5 mm, STRAGHIT, AU0.1U, BLK 3711-004814 CN605 -, 2P, -, 2.5 mm, STRAGHIT, AU0.1U, BLK SAMSUNG Proprietary-Contents may change without notice...
  • Page 15 270 nH, 10 %, 0.8 x 1.6 x 0.8 mm 3301-001208 L602 AB, 1.6 x 0.8 x 0.8 mm, -, - 2703-001297 L603 10 nH, 10 %, 1.6 x 0.8 x 0.8 mm 4709-001144 LAM1 897.5/1747.5 MHZ, 19DB/14DB SAMSUNG Proprietary-Contents may change without notice...
  • Page 16 10 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000148 R205 10 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000148 R206 10 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000137 R207 2 kohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 17 4.7 kohm, 1 %, 1/16 W, DA, TP, 1005 3301-001342 R315 AB, 1.5 kohm, 1 x 0.5 x 0.5 mm, 100 mA, TP, M, 1.4ohm 2007-001298 R316 51 ohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice...
  • Page 18 2007-007142 R519 10 kohm, 1 %, 1/16 W, DA, TP, 1005 2007-007142 R520 10 kohm, 1 %, 1/16 W, DA, TP, 1005 2007-007142 R521 10 kohm, 1 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice 2-10...
  • Page 19 2007-000140 R640 1 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000162 R641 100 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000140 R642 1 kohm, 5 %, 1/16 W, DA, TP, 1005 SAMSUNG Proprietary-Contents may change without notice 2-11...
  • Page 20 24256, 256KBIT, SOP, 8P, 150MIL 0506-001052 U600 UMH9N, NPN, 2, 150 mW, SC-88, TP, 68- 1201-001462 U602 4864, MSOP, 8P, 118MIL- 0504-001071 U603 UMD9N, NPN/PNP, 150 mW, 4.7, UMT6, TP 1203-002127 U605 1734, SOT-23, 6P, 150MIL SAMSUNG Proprietary-Contents may change without notice 2-12...
  • Page 21 RB705D, 20 V, 30 mA, SOT-23, TP 0406-001104 ZD602 ESDA6V1-5W6, 6.1/-/7.2 V, 100 W, SOT-323-6L 0406-001104 ZD603 ESDA6V1-5W6, 6.1/-/7.2 V, 100 W, SOT-323-6L 0406-001104 ZD604 ESDA6V1-5W6, 6.1/-/7.2 V, 100 W, SOT-323-6L 0406-001104 ZD605 ESDA6V1-5W6, 6.1/-/7.2 V, 100 W, SOT-323-6L SAMSUNG Proprietary-Contents may change without notice 2-13...
  • Page 22 3. SGH-A300 Block Diagrams 3-1 SGH-A300 Main Block Diagram SAMSUNG Proprietary-Contents may change without notice...
  • Page 23 Block Diagrams 3-2 SGH-A300 Main RF Block Diagram SAMSUNG Proprietary-Contents may change without notice...
  • Page 24 Block Diagrams 3-2-1 SGH-A300 RF Receive Part Block Diagram SAMSUNG Proprietary-Contents may change without notice...
  • Page 25 Block Diagrams 3-2-2 SGH-A300 RF Transmit Part Block Diagram SAMSUNG Proprietary-Contents may change without notice...
  • Page 26 4. SGH-A300 PCB Diagrams 4-1 SGH-A300 Main PCB Top Diagram SAMSUNG Proprietary-Contents may change without notice...
  • Page 27 PCB diagrams 4-2 SGH-A300 Main PCB Bottom Diagram SAMSUNG Proprietary-Contents may change without notice...
  • Page 28 38 of U400 and keypad 3.2 V U400 pin 33,28,30 Change U400 = 2.8V Check the clock generation circuit Check the clock signal (related to U400 and OSC100) at R105 Check the initial operation SAMSUNG Proprietary-Contents may change without notice...
  • Page 29 Check the U201 (M46) of U400 is “High” Check the pin 11 of U400 Check the U400 (PMIC) is “High” Check the connections and initialization using Factory Test Program Check LCD connector CN601, and resolder bridge SAMSUNG Proprietary-Contents may change without notice...
  • Page 30 VBAT1 VCCD VBAT2 POWER_KEY U400 ALARM_IN GND3 VSIM DTR_IN U8016-1 CN400 GND2 ENABLE_1 RESET_B ENABLE_2 ENABLE_3 PMIC_INTERRUPT RSS_DATA GND_SENSE VCCD VCCA1 R410 ZD402 VOsc Sim_Reset Sim_Clk Sim_Dat VTIC VSIM Sim_En VSYN Clk_Rqst R404 100K SAMSUNG Proprietary-Contents may change without notice...
  • Page 31 Change U605 U605 is between 3.2 V and 4.2 V Ta_Det Q601 Vbat Q605 TA_PRES U605 R646 ISENSE R634 DRIVE L602 VSENSE C634 PROG Vext 10UF U8021 C635 R637 10UF 3.3K,1% R651 Charger_Disable TA_PRES R648 SAMSUNG Proprietary-Contents may change without notice...
  • Page 32 Resolder R104, R107, R103 program. R104, R107 2.2 V Mic_Bias R104 R103 1.1K C108 33UF C112 C111 47NF 22PF Mic+ C113 C116 33PF 22PF C115 47NF Mic- R107 1.1K SAMSUNG Proprietary-Contents may change without notice...
  • Page 33 CN601 Replace Flexible PCB to LCD Module Check the voltage on the speaker Change the LCD Module line lands on LCD Module Replace the Speaker Is Speaker working ? or resolder Speaker SAMSUNG Proprietary-Contents may change without notice...
  • Page 34 Flow Chart of Troubleshooting and Circuit Diagram 5-7 SGH-A300 Key Data Input Check initial operation Check the connection between CN602 and Keypad. Check the pin 1, 3, 4, of CN602 is Check the M46(U201) “High” When one of the keys is...
  • Page 35 Check the Q203 pin 2 is by Factory Test Program “High” Check the Q203 pin 3 is Replace Q203 “Low” CN602 pin 14 = “L” ? Resolder CN602 Replace the key PCB Key PCB is OK ? SAMSUNG Proprietary-Contents may change without notice...
  • Page 36 20 20 Flip_Sns CN601 C611 C609 33PF 33PF SLCD_CS MLCD_CS LED_CTL Write C608 33PF 16 16 Reset_B Mtr_En 17 17 Speaker+ Spkr- 20 20 U201 R220 V620 ZD604 Green_Led_En Q202 Green_Led R219 Red_Led_En Q203 Red_Led SAMSUNG Proprietary-Contents may change without notice...
  • Page 37 Check the circuit related to Q603 Q603 pin3 during alert tone test? Check the C620 3.3V Resolder D601 and C620 Buzzer is ok? Change the Buzzer VBat AU600 C620 22PF D601 R635 C625 Buzzer_En 22PF Q603 SAMSUNG Proprietary-Contents may change without notice 5-10...
  • Page 38 -55 dBm F300 Resolder or change Check D300 pin 1 D300 pin 1 1V~2.3V -60 dBm Change U300 F300 Change pin 4 F300 -65 dBm U300 Change pin 26, 27 U300 -55 dBm SAMSUNG Proprietary-Contents may change without notice 5-11...
  • Page 39 1V ~ 2V ? Change U508 Check U513 pin 3 OSC300 pin1 Change OSC300 1~2.3V ? -10 dBm Change U300 U513 Resolder or Change Pin 9 : H U512 Pin 7 : L Change U513 SAMSUNG Proprietary-Contents may change without notice 5-12...
  • Page 40 1, 2, 5, 6 F300 Resolder or change Check D300 pin 1 D300 pin 1 -60 dBm Change U300 F300 Change pin 4 F300 -65 dBm U300 pin 26, 27 Change U300 -55 dBm SAMSUNG Proprietary-Contents may change without notice 5-13...
  • Page 41 1V ~ 2V ? Change U508 Check U513 pin 3 OSC300 pin1 Change OSC300 1~2.3V ? -10 dBm Change U300 U513 Resolder or Change Pin 9 : L U512 Pin 7 : H Change U513 SAMSUNG Proprietary-Contents may change without notice 5-14...
  • Page 42 Flow Chart of Troubleshooting and Circuit Diagram GND9 GND8 GND7 GND6 GND5 GSMOUT GND4 GND3 GND2 GND1 GND4 GND3 GND2 SAMSUNG Proprietary-Contents may change without notice 5-15...
  • Page 43 Flow Chart of Troubleshooting and Circuit Diagram SXENA VCC4 24 RXMO RXENA GND5 IF1N- FREF 21 IF1N+ GND4 LOINR VCPO 19 LOIN VCC3 18 GND8 DATA VCC7 CLK 16 TXINR TXIN TXMO- TXENA TXMO+ 13 SAMSUNG Proprietary-Contents may change without notice 5-16...
  • Page 44 Flow Chart of Troubleshooting and Circuit Diagram SAMSUNG Proprietary-Contents may change without notice 5-17...
  • Page 45 ELECTRONICS ©Samsung Electronics Co.,Ltd. MAY. 2001 Pinted in Korea. Code No.: GH68-02031A BASIC.