Samsung SCH-N500 Service Manual
  1. Manuals
  2. Brands
  3. Samsung Manuals
  4. Telephone
  5. SCH-N500
  6. Service manual

Samsung SCH-N500 Service Manual

Cdma telephone
Hide thumbs Also See for SCH-N500:
Table of Contents

Advertisement

Quick Links

Download this manual
CDMA TELEPHONE
CDMA TELEPHONE
SCH-N500
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
CONTENTS

Advertisement

Table of Contents
loading

Related Manuals for Samsung SCH-N500

Summary of Contents for Samsung SCH-N500

  • Page 1: Table Of Contents

    CDMA TELEPHONE SCH-N500 CONTENTS CDMA TELEPHONE General Introduction Specification Installation Product Support Tools Circuit Description Test Procedure Flow Chart of Troubleshooting Electrical Parts List Exploded Views and Parts List Block Diagram PCB Diagrams...
  • Page 2 ⓒ Samsung Electronics Co.,Ltd. Setember. 2005 This Service Manual is a property of Samsung Electronics Co.,Ltd. Any unauthorized use of Manual can be punished under applicable Printed in Korea. International and/or domestic law. Code No.: GH68-08423A BASIC.

  • Page 3: General Introduction

    1. General Introduction The SCH-N500 (Single Mode) phone functions as digital phone working in CDMA(Code Division Multiple Access) mode. The following standards and minimum performance standards shall be met or exceeded by each subscriber unit. Air Interface The Subscriber Unit shall be Single band in compliance with TSB-74.
  • Page 4 General Introduction SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 5: Specification

    TCXO freq. 19.2MHz Freq. Stability -45MHz)+/-300Hz Operating Temperature -30deg ~ +60deg 3.6V Supply Voltage STD : 57.0 X 37.0 X 5.1mm Size and Weight 800 mAh SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 6 : 0.944 or more Open Loop Power Control Range . -25dBm : -57.5dBm ~ -38.5dBm . -65dBm : -17.5dBm ~ +1.5dBm . -93.5dBm : +10.5dBm ~ +29.5dBm SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 7 Tone 1 power = -32dBm Tone 2 power = -32dBm - Test 5, 6 Rx power = -79dBm Tone 1 power = -21dBm Tone 2 power = -21dBm SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 8 9) S9 : Originate State 10) SA : Page Res State 11) SB : ORD Res State 12) SC : Reg State 13) SD : MSG State SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 9: Installation

    Pull and lift the on the back are inserted into the matching slots in battery away from the phone. the phone. Press down until the latchsnaps into place. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 10 Installation SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 11: Product Support Tools

    4-1 General IMPORTANT INFORMATION Purpose The Product Support Tool (PST) offers you the ability to interface with the SAMSUNG telephone using a PC. With this tool you can program the phones network system requirements and functionality, data, and download software upgrades. This document supports UniPST version 2.686.
  • Page 12 4-2 PST (Product Support Tool) 4-2-1 Getting Started MAIN MENU SCREEN 1. Double Click on your "Samsung PST for PBTL (SE)" 2. Select SCH-N500 The Main Menu Screen shows the basic tasks that are available. CAUTION: DO NOT attempt to program phone with a low battery.
  • Page 13 Phone" first, and then make the changes, so that nothing gets inadvertently overwritten. NOTE: DO NOT TOUCH THE PHONE WHILE WRITING IS IN PROGRESS. Software Download and Upgrade Screen 1. Connect PC and SCH-N500 with UART cable 2. Run Universal PST. 3. Select DownLoad Mode tab.
  • Page 14 Product Support Tools SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 15: Circuit Description

    - FROM:U102(K5A3281CTM) 32Mbit Flash ROM, display efficiency. An internal back-light circuitry MCP. and EL back-light are used for easy operation in - SRAM:U102(K5A3281CTM) 8Mbit SRAM, MCP. the dark. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 16 Clock -Modem clock : 19.20MHz. This clock signal is used for ARM 7TDMI -Sleep clock : 32.768KHz. This clock signal is used for sleep. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 17 CODEC and the data will be decoded by the internal DAC and audio levels are adjusted by the amplifier. The final audio is then sent to the audio receiver. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 18 Driver amp. Dynamic range is 90dB, and its control the DC voltage which controls the frequency of voltage varies from 0.2V to 2.5V. VCO output signal. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 19 (TH101) detects the peripheral temperature. It is used to compensate the variance in characteristics of an active component due to the temperature difference. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 20 /* CDMA TX pwr ch. flatness */ T_CDMA_PWR_LIMIT_I /* CDMA TX pwr limit */ T_CDMA_TEMPCOMP_I /* CDMA temp. compensation */ T_CDMA_VGA_OFFSET_I /* CDMA DVGA offset */ T_CDMA_BTF_I SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 21 T_VOC_PCMLPOFF_I /* Turn off to play a PCM loop back */ T_GET_MODE_I /* Get mode CDMA/FM autotest */ T_SET_MODE_I /* Set mode CDMA/FM autotest */ SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 22 Circuit Description SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 23: Test Procedure

    ● CAUTION : The test jig and data cable has a voltage drop of 0.15V at Max power output, you'd better set the DC power supply to 4.15V for normal test condition. (Nominal voltage of battery is 4.0V at cellular phone) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 24 6-3-1 TEST CABLE 6-3-2 TEST CABLE CONNECTIONS KMS-510-D RF CABLE (1.4dB Loss for CDMA,) BNC CONNECTOR (RF) PLUG CONNECT TO SCH-N500 DATA CABLE Dsub 18PIN CONNECTOR (DATA) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 25 F=0.03 × (N-1023) + 825.00 F ; FREQUENCY 990 ≤ N ≤ 1023 F=0.03 ×N + 825.00 990 ≤ N ≤ 1023 FREQUENCY F=0.03 × (N-1023) + 870.00 (CDMA) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 26 : Performs a call by a selected phone number. CLEAR : Cancel or end the function and cancel a number or character in the phone test mode or NAM mode. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 27 F. "016" " xxx " : Adjust RF power level. "xxx" means AGC level (000~ 511) G. To finish the Test Mode, You should enter the command "002". SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 28 : Gated Power - at least 20dB Gated Time - Rising Time : below 6 ㎲ Falling Time : below 6 ㎲ Burst Time : below 1.25 ㎳ SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 29: Flow Chart Of Troubleshooting

    Check U204 and its neighboring Check U204 and its neighboring VO3=2.65volt & circuits circuits VO1=2.8volt? VO1=2.65volt ? ( V_MSMP / V_MSMA Problem ) ( V_MSMP / V_MSMA Problem ) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 30 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 31 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 32 Check U104 and its neighboring signal outputted from signal outputted from circuits. Replace if required. circuits. Replace if required. U104 pin4 ? U104 pin4 ? SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 33 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 34 Check U200, ZD201, EL sheet. Check U200, ZD201, EL sheet. U200 pin7 >=180 volt ? U200 pin7 >=180 volt ? Replac if required. Replac if required. SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 35 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 36 ? pin6,10 ? pin2,6 ? pin2,6 ? Check speaker Check speaker Normal Normal connection. connection. sound ? sound ? Replace if required Replace if required SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 37 Flow Chart of Troubleshooting SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 38 Check RX path Setup Call Check TX path Sensitivity <-104dBm ? Check RX path in detail Max Power Check TX path in detail >22dBm? 7-10 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 39 C337 ? exist at C308 ? Check Gain Characteristics Check Gain Characteristics Check Gain Characteristics Duplexer(F401),LNA(U303), Duplexer(F401),LNA(U303), Duplexer(F401),LNA(U303), RF SAW(F300) RF SAW(F300) RF SAW(F300) 7-11 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 40 Flow Chart of Troubleshooting 7-12 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 41 U400 pin23 ? exist at U400 pin23 ? Check Gain Characteristics Check Gain Characteristics RFT6122(U400),RF SAW(F400),Power RFT6122(U400),RF SAW(F400),Power Amp(U447),Duplexer(F401) Amp(U447),Duplexer(F401) 7-13 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 42 Flow Chart of Troubleshooting 7-14 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 43: Electrical Parts List

    2203-005061 C138 C-CER,CHIP 2203-006399 C139 C-CER,CHIP 2203-006190 C140 C-CER,CHIP 2203-000233 C141 C-CER,CHIP 2203-000254 C142 C-CER,CHIP 2203-006190 C143 C-CER,CHIP 2203-005061 C144 C-CER,CHIP 2203-006399 C145 C-CER,CHIP 2203-000254 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 44 2203-006324 C248 C-CER,CHIP 2203-000438 C249 C-CER,CHIP 2203-000940 C250 C-CER,CHIP 2203-006399 C257 C-TA,CHIP 2404-001268 C258 C-CER,CHIP 2203-005061 C259 C-TA,CHIP 2404-001105 C260 C-CER,CHIP 2203-005061 C261 C-CER,CHIP 2203-006201 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 45 2203-000438 C409 C-CER,CHIP 2203-002443 C410 C-CER,CHIP 2203-000359 C411 C-CER,CHIP 2203-000233 C412 C-CER,CHIP 2203-005482 C413 C-CER,CHIP 2203-000233 C414 C-CER,CHIP 2203-001017 C415 C-CER,CHIP 2203-000550 C416 C-CER,CHIP 2203-000278 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 46 2703-001868 L201 INDUCTOR-SMD 2703-002850 L202 INDUCTOR-SMD 2703-001868 L203 BEAD-SMD 3301-001170 L204 BEAD-SMD 3301-001342 L205 BEAD-SMD 3301-001170 L301 BEAD-SMD 3301-001729 L302 BEAD-SMD 3301-001729 L303 INDUCTOR-SMD 2703-001409 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 47 2007-000171 R104 R-CHIP 2007-000148 R106 R-CHIP 2007-007309 R107 R-CHIP 2007-007137 R108 R-CHIP 2007-007139 R109 R-CHIP 2007-000162 R110 R-CHIP 2007-000141 R112 R-CHIP 2007-000141 R113 R-CHIP 2007-000162 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 48 2007-003004 R215 R-CHIP 2007-000138 R216 R-CHIP 2007-003004 R217 R-CHIP 2007-000138 R218 R-CHIP 2007-007310 R221 R-CHIP 2007-007697 R222 R-CHIP 2007-000165 R223 R-CHIP 2007-000141 R224 R-CHIP 2007-000162 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 49 2007-000138 R405 R-CHIP 2007-000171 R406 R-CHIP 2007-000171 R407 R-CHIP 2007-000140 R408 R-CHIP 2007-000148 R409 R-CHIP 2007-000172 R410 R-CHIP 2007-001329 R411 R-CHIP 2007-007142 RFSW401 CONNECTOR-COAXIAL 3705-001351 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 50 U401 IC-POWER AMP 1201-002228 U402 TR-ARRAY 0506-001004 V201 VARISTOR 1405-001082 V202 VARISTOR 1405-001082 V203 VARISTOR 1405-001082 ZD201 DIODE-ZENER 0403-001511 ZD204 DIODE-ZENER 0403-001427 ZD205 DIODE-ZENER 0403-001547 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 51 9. Exploded View and Parts list 9-1 Exploded Views QMW01 QRF03 QFR01 QKP01 QME01 QSP01 QLC01 QMP01 QMI01 QSH01 QCR12 QMO01 QRF01 QRE01 QIF01 QCR20 QBA19 QBA00 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 52: Exploded Views And Parts List

    RMO-RF COVER;SCH-N500,ELASTOMA,PI4.7 GH73-05218A QSH01 　 MEC-SHIELD REAR;SCH-N500,TATA,-,-,-, GH75-07757A QSP01 　 SPEAKER;0.5W,8ohm,87dB,750Hz±15% 3001-001705 QFR01 　 MEC-FRONT CASE;SCH-N500,TATA,-,-,-,- GH75-07754A 　 QRF03 PMO-EAR COVER;SCH-N500,PC+URETHAN,WH GH72-24171A QKP01 　 MEC-KEYPAD;SCH-N500,TATA,-,-,-,-,SIL GH75-07756A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 53 BOX(P)-SCHN500(TATA);SCH-N500,SC300+ GH69-03260A ICT-SHIELD FRONT;SCH-N500,STS,-,0.3, GH70-00723A MPR-WINDOW BOHO VINYL(B);SCH-N356,ST GH74-08753B MPR-TAPE INSULATION;SCH-N380,3M,7X10 GH74-13584A MPR-BOHO VINYL WIN (B);SCH-N345,STA GH74-15116A MPR-TAPE FPCB INSULATION;SCH-N500,3M GH74-16900A MPR-SPONGE SPK;SCH-N500,SRS,PI 11XT0 GH74-16901A SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 54 9-3 Test Jig (GH80-10502C) 9-3-1 RF Test Cable 9-3-2 Test Cable 9-3-3 Serial Cable (GH39-00261A) (GH39-00122A) 9-3-4 Power Supply 9-3-6 TA 9-3-5 DATA CABLE Cable (GH44-00902A) (GH39-00221A) SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 55: Block Diagram

    10. Block Diagrams 10-1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

  • Page 56: Pcb Diagrams

    11. PCB Diagrams 11-1. Main PCB Top Diagram 11-1 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...
  • Page 57 PCB Diagrams 11-2. Main PCB Bottom Diagram 11-2 SAMSUNG Proprietary-Contents may change without notice This Document can not be used without Samsung's authorization...

Table of Contents