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Samsung SCH-3500 series Service Manual
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Samsung SCH-3500 series Service Manual

Samsung SCH-3500 series Service Manual

Portable cellular telephone
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SERVICE
PORTABLE CELLULAR TELEPHONE
GHI
PQRS
DEF
ABC
MNO
JKL
WXYZ
TUV
SPACE
PORTABLE CELLULAR
TELEPHONE
SCH-3500 Series
Manual
CONTENTS

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Summary of Contents for Samsung SCH-3500 series

  • Page 1: Table Of Contents

    PORTABLE CELLULAR TELEPHONE SCH-3500 Series SERVICE Manual PORTABLE CELLULAR TELEPHONE CONTENTS 1. General Introduction 2. Specification 3. Installation 4. NAM Programming 5. Product Support Tools 6. Circuit Description 7. Test Procedure 8. Trouble Shooting 9. Exploded Views and Parts List 10.

  • Page 2: General Introduction

    Unit shall comply with Personal Station Class II. Analog Receiver/Transmitter Specifications and Requirements The Subscriber Unit shall comply with TIA/EIA IS-95A and meet or exceed TIA/EIA IS-95. The Subscriber Unit shall comply with Mobile Station Power Class III (600 mW). SAMSUNG Proprietary-Contents may change without notice...

  • Page 3: Specification

    13.7V DC (± 10%) Size and Weight Including standard battery 11.2 x 5.2 x 2.5 cm, 146 cc, 146 g (5.1 ounces) Including extended-life battery 11.2 x 5.2 x 3.0 cm, 175 cc, 166 g (5.8 ounces) SAMSUNG Proprietary-Contents may change without notice...
  • Page 4 + 90 kHz ~ 2f : above 63 + 10LOG (Py) dB (where f = carrier frequency, Py = mean output power in watts) Harmonic and Conducted Spurious Emissions : above 43 + 10 LOG (Py) dB SAMSUNG Proprietary-Contents may change without notice...
  • Page 5 70 ~ 130 MHz -41 dBm 130 ~ 174 MHz -41 ~ -32 dBm 174 ~ 260 MHz -32 dBm 260 ~ 470 MHz -32 ~ -26 dBm 470 ~ 1 GHz -21 dBm SAMSUNG Proprietary-Contents may change without notice...
  • Page 6 : lower than 1% Rx power = -101 dBm Tone power 1 = -43 dBm Tone power 2 = -43 dBm Tone 1 offset from carrier = ±1.25 MHz Tone 2 offset from carrier = ±2.05 MHz SAMSUNG Proprietary-Contents may change without notice...

  • Page 7: Nxxxxx : Nid (Network Identification) Toggle

    9 TV : Tx vocoder rate (8 is full rate, 1 is 1/8th rate) 10 RV : Rx vocoder rate (8 is full rate, 1 is 1/8th rate) 11 xx : Walsh code used in traffic channel 12 System acquisition state SAMSUNG Proprietary-Contents may change without notice...
  • Page 8 5 RSSIxxx : RSSI value 6 CHxxx : Channel number 7 Handset Status : 1 - Initialization state 2 - Idle state 3 - System Access state 4 - Voice channel state 8 System acquisition state SAMSUNG Proprietary-Contents may change without notice...

  • Page 9: Installation

    BATTERY PACK PACK (BTS350) Battery Type Standard Battery Extended battery (BTE350) (Li-ion, 1000mAh) (Li-ion, 1600mAh) Charging Time 3 hours 4 hours SEC Code GH43-10316B GH43-00121A DTC : DTC350 Figure 3-1 Charging the Phone and Battery SAMSUNG Proprietary-Contents may change without notice...
  • Page 10 Reassemble the two halves of the clamshell together. Adjust the mounting angle and tighten the two slotted screws. SCH-3500 MAIN PHONE ANTENNA CRADLE CLAM SHELL MOUNT UPPER HANDS FREE BOX FIXED SCREW CLAM SHELL MOUNT LOWER Figure 3-2 Cradle Installation SAMSUNG Proprietary-Contents may change without notice...
  • Page 11 Once the microphone has been correctly 3-3-4 Speaker positioned, connect the microphone wire to the MIC jack on the hands-free box. Install the speaker into the appropriate position. MOUNTING BRACKET Figure 3-3 Hands-Free Box Installation SAMSUNG Proprietary-Contents may change without notice...
  • Page 12 (+) terminal. Connect the other end of the power cable to the PWR jack of the hands-free box. Black Brown Orange Figure 3-4 Cable Connections SAMSUNG Proprietary-Contents may change without notice...

  • Page 13: Nam Programming

    Slot mode. ‘Yes’ indicates the slot mode. Slot Mode ˆ or ¤ -changes the status. -store it. Slot Index Slot mode index. The higher, the longer sleeping time. 0 ~ 7 -to change, enter new one. -stores it. SAMSUNG Proprietary-Contents may change without notice...
  • Page 14 CDMA Access Overload Class, current status is displayed. CDMA ACCOLC Class number -to change, enter new one. -stores it. CDMA Home system ID, current status is displayed CDMA HomeSID ˆ or ¤ -change the status -store it. SAMSUNG Proprietary-Contents may change without notice...
  • Page 15 SID written in the list, current status is displayed. HOME SID Number -to change, enter new one. 4120 -store it. NID written in the list, current status is displayed. Number -to change, enter new one. -store it. 65535 SAMSUNG Proprietary-Contents may change without notice...

  • Page 16: Product Support Tools

    IMPORTANT INFORMATION Purpose The Product Support Tool (PST) offers you the ability to interface with the SAMSUNG DBDM telephone using a PC. With this tool you can program the phones network system requirements and functionality, swap phone data, and download software upgrades. This document supports UniPST version x.xx.
  • Page 17 The Main Menu Screen shows the basic tasks that are available. CAUTION: DO NOT attempt to program phone with a low battery. PST SETUP UniPst supports SAMSUNG DBDM portable telephone. You can select serial port COM1 or COM2. 5-2-2 Operation Procedure Service Programming The Service Programming screens enable you to set and change the service activation parameters of the phones.
  • Page 18 3. Click Mode Select box, then Select SERVICE MODE?to return to the Service Mode Screen. NOTE: DO NOT POWER OFF WHILE THE PHONE IS BEING DOWNLOADED! SAMSUNG Proprietary-Contents may change without notice...

  • Page 19: Circuit Description

    16M Flash ROM, 4M SRAM •EEPROM : U903 (M24256) 256K Serial EEPROM LCD MODULE LCD module contains a controller which will display the information onto the LCD by 8-bit data from the MSM. SAMSUNG Proprietary-Contents may change without notice...
  • Page 20 •TX_CLK (pin H1), TX_CLK/(pin H4) : Analog to TXCO is disabled. Digital Converter (ADC) reference clock used in TX mode. •CHIPX8 : ADC reference clock used in CDMA RX mode. •FMCLK : Reference clock in FM RX mode. SAMSUNG Proprietary-Contents may change without notice...
  • Page 21 Receive Data PCM Data CODEC and Status VOCODER General Purpose ADC Interface PCM Data Aux. CODEC MODE Select Interface Extemal Mode Selection ANSI/IEEE 1149.1-1990 Digital Test Bus JTAG Interface Figure 6-1 Baseband Block Diagram SAMSUNG Proprietary-Contents may change without notice...
  • Page 22 FM frequency deviation is not over ±12 kHz/dev. The function is used to avoid confusion over phone line. LPF is used to reduce a specific high frequency of limited signal. SAMSUNG Proprietary-Contents may change without notice...
  • Page 23 Tx frequency range (1880 ±30 MHz). It also matches LNA (U401) input in receiving part and PA out in transmitter part with the antenna. SAMSUNG Proprietary-Contents may change without notice...
  • Page 24 - Operational modes compatible with MSM2300 and assemblies MSM3000 - Three-line Serial Bus Interface for initializing and control of the IFR3000 from the MSM3000 - 48-lead TQFP (JEDEC Pub 95 MS-026 BBC) packaging for dense circuit boards SAMSUNG Proprietary-Contents may change without notice...
  • Page 25 IF SAW BAND PASS FILTER IF SAW BPF (F107) is used for AMPS system having 30kHz channel spacing and ±15 kHz bandwidth. The filter also climinates the spurious signals at the mixer. SAMSUNG Proprietary-Contents may change without notice...
  • Page 26 130MHz IF signal to 966±12.5 MHz first local signal. supplies 3.0V to TX driver (U408), mixer (U407) and VBatt is connected to Power Amp Module (U411) directly. ANTENNA Antenna allows signal to send to receive from the base station. SAMSUNG Proprietary-Contents may change without notice...

  • Page 27: Test Command Table

    35(A3, 0, 0) T_VOLUME_UP_I Increase value of the last command. (Only for autotest) 36(A4, 0, 0) T_VOLUME_DOWN_I Decrease value of the last command. (Only for autotest) 42(AA, 1, 0) T_DTMFON_I Activate DTMF generator with keycode. SAMSUNG Proprietary-Contents may change without notice...
  • Page 28 Change pdm TX AGC in AMPS. 73(D3, 1, 0) T_SET_PA_R_I Set PA R1, R0 in CDMA. 74(D4, 4, 0) T_TXRAS_ADJ_I TX Ras table adjust. 75(D5, 0, 3) T_READ_RSSI_I Read a RSSI. 76(D5, 3, 0) T_WRITE_RSSI_I Writes RSSI. SAMSUNG Proprietary-Contents may change without notice 6-10...
  • Page 29 *OP: Operation Command Number AB: Input Argument Byte Number RB: Return Byte Number *SAT 32, 33 are not operating in MSM2 CHIP test *46 command is required in Rx, and Tx path test at AMPS mode. SAMSUNG Proprietary-Contents may change without notice 6-11...

  • Page 30: Test Procedure

    Duplexer Out RF In/Out Directional Coupler Test Interface Box DC Power Supply (+3.8 V) 7-2-2 Hands-Free HANDS FREE KIT BOX ANTENNA CRADLE DATA DC POWER SUPPLY (+13.7V) Black IGNITION Orange CAR AUDIO MUTE Brown SAMSUNG Proprietary-Contents may change without notice...
  • Page 31 CONNECT TO DB25 CONNECTOR OF CONNECT TO HHP TEST CABLE BNC CONNECTOR CONNECT TO RF IN/OUT PORT OF TEST EQUIPMENT (Cable Loss : 1.2 ~ 2.1 dB) Items needed to purchase from SAMSUNG ITEMS PARTS# REMARK TEST CABLE GH39-30529A * Cable Loss : 1.9 GHz (PCS) 2.1 dB, 800 MHz (Cellular) 1.2 dB (1.5 m)
  • Page 32 • The command [0 7] means carrier on. ex) [7 2 X X X] • If you enter the command [3 4] you can • [#] key means the escape of current command. spread the carrier. SAMSUNG Proprietary-Contents may change without notice...

  • Page 33: Trouble Shooting

    Check Q905 and its neighboring circuits Check U904 and its neighboring circuits. U904 pin3 input = 0V? U907 pin 5 output=3.0V? Check U907 and its neighboring circuits. R945 pin 4 output=3.0V? Check R945 and its neighboring circuits. SAMSUNG Proprietary-Contents may change without notice...
  • Page 34 U103 pin38. U103 pin 38? Check the LED and its neighboring LED on? circuits. Replace if required. Normal initial Check the LCD pins and its neighboring display on LCD? circuits. Replace if required. SAMSUNG Proprietary-Contents may change without notice...
  • Page 35 U908 pin 147 drive Replace if required. Q4 through R35? Check R28, R29, R30 and Normal Q5 operation? Replace if required. The voltage applied Resolder R31 and R32. to LCD pins 46, 47? Backlight LED on SAMSUNG Proprietary-Contents may change without notice...
  • Page 36 Trouble Shooting 8-1-4 Abnormal Key Data Input Check initial status. Scanning signals Resolder P901 pins 33~42 outputted from P901 pins 33~42? Normal Key data input? Replace the Keypad assembly. SAMSUNG Proprietary-Contents may change without notice...
  • Page 37 Check U908 pin 189. Replace if required. outputted from U908 pin 189? CLK waveform Replace U902 applied from U902 pin 2~3? CLK waveform applied Check C907, R932 to C907 R932? Normal key tone? Replace the Keypad assembly. SAMSUNG Proprietary-Contents may change without notice...
  • Page 38 CLK waveform applied Check R922, Q902. to Q902 Base? CLK waveform applied Check R934, Q901 to Q901 Base? Is the buzzer Connect the buzzer correctly. connection correct? Check the buzzer and replace if required. SAMSUNG Proprietary-Contents may change without notice...

  • Page 39: Receiver Section

    (Loss: -5dB) Check 2nd Check PLL(U204) RSSI OK? local OK? & IFR #25. (When RX Input Level is -90 dBm, RSSI displays 40-60 in test mode 01,090363,75) RF RX AMPS OK. (IFR input: -30dBm) SAMSUNG Proprietary-Contents may change without notice...
  • Page 40 Trouble Shooting 8-2-2 PCS mode Start PCS mode. Normal PCS SVC Check PCS Rx path. & ROAM OK? Check Transmitter. Setup PCS call. OK? Measure PCS FER. Normal PCS RF? SAMSUNG Proprietary-Contents may change without notice...

  • Page 41: Transmitter Section

    (AMPS) RF out TX IF Level OK? local level. Level OK? AMPS:-12dBm AMPS:-6dBm AMPS:-2dBm PCS:-24 dBm PCS:-37 dBm PCS:-3dBm Check U409 Check U412(PCS) (PCS) U408(AMPS) RF U411(AMPS) Out level OK? Pout level. AMPS:+5dBm AMPS:25dBm PCS:-17dBm PCS:-5.1dBm SAMSUNG Proprietary-Contents may change without notice...

  • Page 42: Exploded Views And Parts List

    9. Exploded View and Parts List 9-1 DBDM Phone Exploded View SAMSUNG Proprietary-Contents may change without notice...
  • Page 43 KEY PAD ASS’Y GH59-00029A RMO-CONNECTOR COVER GH73-40659B MPR-MIC ADHESIVE RUBBER GH74-00325A DISPLAY-LCD GH07-00003A PMO-SHIELD CAN MAIN GH72-00198A ANTENNA GH42-00019A NPR-ANT BRACKET GH71-00097A UNIT-KEY ASS’Y GH59-00030A BATTERY GH43-10316B 1000mA SCREW-MACHINE 6001-001046 4 PCS PMO-EARP. DUMMY GH72-41693A SAMSUNG Proprietary-Contents may change without notice...
  • Page 44 GH71-10706A 7PIN (À ß ¸ ² 6PIN) GH71-10706A 7PIN GH71-10640A 3PIN (2EA) GH71-10641A 4PIN GH71-10641A 4PIN (À ß ¸ ² 4PIN) GH71-10651A 5PIN (À ß ¸ ² 5PIN) GH71-10707A GH71-00019A 2PIN (À ß ¸ ² 2PIN) 1PIN (1EA) GH71-10643A 6PIN (À ß ¸ ²...
  • Page 45 Exploded View and Parts List 9-3 Desk-Top Rapid Charger Ass’y (DTC350, GH44-00084A) 9-4 Travel Charger Ass’y (TC20, GH44-40090A) 9-5 Cigarette Lighter Adaptor Ass’y (CLC020, GH44-00021F) SAMSUNG Proprietary-Contents may change without notice...
  • Page 46 Exploded View and Parts List 9-6 Hands Free Kit Ass’y (HFC350, GH59-00046A) SAMSUNG Proprietary-Contents may change without notice...

  • Page 47: Block Diagram

    10. Block Diagram SAMSUNG Proprietary-Contents may change without notice 10-1...

  • Page 48: Electrical Parts List

    1203-001285 U343, U344, U905 IC-SWITCH VOL. REG, SOT-23, 5P, 150MIL 1203-001285 U403 IC-SWITCH VOL. REG, SOT-23, 5P, 150MIL 1203-001285 U907 IC-VOLTAGE REGULATOR, SOP, 8P, 118MIL 1203-001767 U406, U407 IC-MODULATOR, SOT-23, 6P, 59MIL 1204-001013 SAMSUNG Proprietary-Contents may change without notice 11-1...
  • Page 49 R-CHIP 47 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000157 R520 R-CHIP 47 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000157 R912 R-CHIP 47 kohm, 5 %, 1/16 W, DA, TP, 1005 2007-000157 SAMSUNG Proprietary-Contents may change without notice 11-2...
  • Page 50 R-CHIP 150 ohm, 5 %, 1/16 W, DA, TP, 1005 2007-001306 R422, R424 R-CHIP 180 ohm, 5 %, 1/16 W, DA, TP, 1005 2007-001307 R926, R927 R-CHIP 330 ohm, 5 %, 1/16 W, DA, TP, 1005 2007-001313 SAMSUNG Proprietary-Contents may change without notice 11-3...
  • Page 51 C-CERAMIC, CHIP 10 pF, 0.5 pF, 50 V, NPO, TP, 1005 2203-000278 C203 C-CERAMIC, CHIP 10 pF, 0.5 pF, 50 V, NPO, TP, 1005 2203-000278 C423 C-CERAMIC, CHIP 10 pF, 0.5 pF, 50 V, NPO, TP, 1005 2203-000278 SAMSUNG Proprietary-Contents may change without notice 11-4...
  • Page 52 C-CERAMIC, CHIP 39 pF, 5 %, 50 V, NPO, TP, 1005 2203-000854 C152, C401 C-CERAMIC, CHIP 3 pF, 0.25 pF, 50 V, NPO, TP, 1005 2203-000870 C160 C-CERAMIC, CHIP 3 pF, 0.25 pF, 50 V, NPO, TP, 1005 2203-000870 SAMSUNG Proprietary-Contents may change without notice 11-5...
  • Page 53 C-TA, CHIP 10 uF, 20 %, 6.3 V, GP, TP, 2012 2404-001064 C903, C916, C942, C945 C-TA, CHIP 10 uF, 20 %, 6.3 V, GP, TP, 2012 2404-001064 C947 C-TA, CHIP 10 uF, 20 %, 6.3 V, GP, TP, 2012 2404-001064 SAMSUNG Proprietary-Contents may change without notice 11-6...
  • Page 54 INDUCTOR-SMD 5.6 nH, 0.3 nH, 1.6 x 0.8 x 0.8 mm 2703-001441 L500 INDUCTOR-SMD 27 nH, 5 %, 1.8 x 1.12 x 1.02 mm 2703-001512 L203, L207 INDUCTOR-SMD 33 uH, 20 %, 1.6 x 0.8 x 0.8 mm 2703-001707 SAMSUNG Proprietary-Contents may change without notice 11-7...
  • Page 55 K108, K109, K110, K111 NPR-GROUNDING TERMINAL SCH-510, C1720, T0.1 GH71-00002A MEA REAR-COVER, SAMSUNG, USA GH97-00891A UNIT-SCH-3500 KEY ASS’Y, YWC3500 GH59-00030A MEA FRONT-COVER(SIL) SCH-3500, -, KORA, SIL GH97-00892C UNIT-SCH-3500REC KEY ASS’Y GH59-00031A GASKET-SCH-3500,CONDUCTIVE FABLIC GH63-00010A SAMSUNG Proprietary-Contents may change without notice 11-8...
  • Page 56 12. PCB Diagram 12-1 Main PCB Top Diagram SAMSUNG Proprietary-Contents may change without notice 12-1...

  • Page 57: Pcb Diagrams

    PCB Diagrams 12-2 Main PCB Bottom Diagram SAMSUNG Proprietary-Contents may change without notice 12-2...
  • Page 58 PCB Diagrams 12-3 Key PCB Top Diagram SAMSUNG Proprietary-Contents may change without notice 12-3...
  • Page 59 PCB Diagrams 12-4 Key PCB Bottom Diagram SAMSUNG Proprietary-Contents may change without notice 12-4...

  • Page 60: Circuit Diagrams

    13. Circuit Diagrams 13-1 Receiver Circuit Diagram SAMSUNG Proprietary-Contents may change without notice 13-1...
  • Page 61 Circuit Diagrams 13-2 Transmitter Circuit Diagram SAMSUNG Proprietary-Contents may change without notice 13-2...
  • Page 62 Circuit Diagrams 13-3 Memory Circuit Diagram SAMSUNG Proprietary-Contents may change without notice 13-3...
  • Page 63 Circuit Diagrams 13-4 DC-DC Converter Circuit Diagram SAMSUNG Proprietary-Contents may change without notice 13-4...
  • Page 64 Circuit Diagrams 13-5 Control Circuit Diagram SAMSUNG Proprietary-Contents may change without notice 13-5...
  • Page 65 ELECTRONICS ©Samsung Electronics Co.,Ltd. Sep. 99 Printed in Korea. Code No.: GH68-00676A Sprint.

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