Samsung SCH-850 Service Manual
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Samsung SCH-850 Service Manual

Samsung SCH-850 Service Manual

Dual mode(cdma+amps) portable telephone
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ELECTRONIC
SERVICE
DUAL MODE TELEPHONE
MENU
SEND
1
. '
4
GHI
7
PQRS
OK /
END/
3
DEF
2
ABC
6
MNO
5
JKL
9
WXYZ
8
TUV
0
OPER
DUAL MODE(CDMA+AMPS)
PORTABLE TELEPHONE
SCH-850
Manual
CONTENTS
9. Schematic Diagrams

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Summary of Contents for Samsung SCH-850

  • Page 1: Table Of Contents

    DUAL MODE(CDMA+AMPS) PORTABLE TELEPHONE ELECTRONIC SCH-850 SERVICE Manual DUAL MODE TELEPHONE CONTENTS 1. Specification 2. Nam Programming 3. Test Commands & Test Procedure List 4. Test Procedure 5. Exploded View & its Parts List 6. Electrical Parts List 7. Block Diagram 8.
  • Page 2 ELECTRONICS Samsung Electronics Co.,Ltd. Dec. 99 Pinted in Korea. Code No.: GH68-00947A...

  • Page 3: Specification

    Supply Voltage 3.6V Size and Weight Slim : 88mm X 50mm X 23.5mm, 105 g, 500 mA STD : 88mm X 50mm X 25.7mm, 135 g, 1000 mA EXT : 88mm X 50mm X 27.5mm, 151 g, 1600 mA Samsung Electronics...
  • Page 4 • -104dBm : +18.0dBm ~ +30dBm Minimum Tx Power Control : below -50dBm Closed Loop Power Control Range : ±24dB Maximum RF Output Power : 200mW(+23dBm) Occupied Bandwidth : 1.23MHz Conducted Spurious Emission @900 KHz : -42dBc/30kHz @1.25 MHz : -54dBc/30kHz Samsung Electronics...
  • Page 5 Tone offset from carrier = ±900 kHz Intermodulation Spurious Response Attenuation : lower than 1 % Rx power = -101dBm Tone 1 power =-43dBm Tone 2 power =-43dBm Tone 1 offset from carrier = ± 900kHz Tone 2 offset from carrier = ± 1.700MHz Samsung Electronics...
  • Page 6 Wideband Data : ±8 kHz(±10%) Post Deviation Limiter Filter 3.0 ~ 5.9 kHz : above 40 LOG(F/3000)dB 5.9 ~ 6.1 kHz : above 35dB 6.1 ~ 15 kHz : above 40 LOG(F/3000)dB Over 15 kHz : above 28 dB Samsung Electronics...
  • Page 7 : -45dBm 70 ~ 130MHz : -41dBm 130 ~ 174 MHz : -41 ~ -32dBm 174 ~ 260 MHz : -32 dBm 260 ~ 470 MHz : -32 ~ -26 dBm 470 ~ 1G MHz : -21 dBm Samsung Electronics...

  • Page 8: Nam Programming

    NAM1 Dgtl HomeSID System ID for home, current ststus is displayed. 4369 ID number -to change, enter new one. -store it. NAM1 More Prog.? General NAM setup < or > -to change, press < or > -store it Samsung Electronics...
  • Page 9 -changes the status. -store it. General Slot Index Slot mode index. The higher, the longer sleeping time -to change, enter new one. -store it. General Roundup Timer Roundup Timer. < or > -to change the status. -store it. Samsung Electronics...
  • Page 10 65535 Phone number -to change, enter new one. -store it. ————— repeated to SID 20 & NID 20—————————— NAM2 Digital Lockout SID01 1st lock system ID,current status is displayed. ID number -to change, enter new one. -store it. Samsung Electronics...
  • Page 11 NAM2 Analog Auto Reg Auto Registration, current status is displayed < or > -changes the status. -store it. NAM2 Analog ACCOLC Analog Access Overload Class, current status is displayed. class number -to change, enter new one. -store it Samsung Electronics...

  • Page 12: Test Commands & Test Procedure List

    Vocoder CDMA unity gain 41(A9,3,0) T_VOC_FM_HFRX_UPGAIN_I Vocoder FM hfrx upgain 42(AA,1,0) T_DTMFON_I2) Turn on DTMF 43(AB,0,0) T_DTMFOFF_I Turn off DTMF 44(B0,0,0) T_COMPANDORON_I Turn on compandor 45(B1,0,0) T_COMPANDOROF_I Turn off compandor 46(B2,0,0) T_FM_VCLINE_I* Enter FM voice state 47(B3,3,0) T_FM_AUD_GAIN_I FM audio gain Samsung Electronics...
  • Page 13 CDMA RX RAS table( not adjustable ) 96(F6,4,0) T_CH_FLATNESS_I Adjust TX high power RAS 97(F2,4,0) T_FM_TX_PWR_I Adjust FM Power level 2 ~ 7 98(F8,3,0) T_TXRAS_ADJ_BP_ON_I CDMA TX low power RAS table( not adjustable) 99(FC,4,0) T_SND_GAIN_I Mic/Speaker Gain control Samsung Electronics...

  • Page 14: Test Procedure

    CAUTION : The test jig and data cable has a voltage drop of 0.33V at FM Max power output, you’d better set the DC power supply to 3.93V for normal test condition. (Nominal voltage of battery is 3.6V at cellular phone) Samsung Electronics...
  • Page 15 4-3 Test Cable Description for SCH-850 1. Test Cable 2. Test Cable Connections MHC 172 RF CABLE 91.4db Loss for CDMA800 and AMPS) BNC CONNECTOR (RF) PLUG CONNECT TO SCH-850 DATA CABLE Dsub 25PIN CONNECTOR (DATA) Samsung Electronics...
  • Page 16 N ; CH NUMBER 990 ≤ N ≤ 1023 FREQUENCY F=0.03 X (N-1023) + 825.00 F ; FREQUENCY 1 ≤ N≤ 799 F=0.03 X N + 870.00 (AMPS/CDMA) 990 ≤ N ≤ 1023 FREQUENCY F=0.03 X (N-1023) + 870.00 Samsung Electronics...
  • Page 17 H. “9 7 * * * “ : Output RF power level is set as power level 2 “* * *” means AGC level and AGC level range is from 0 to 511. I. “1 0 2” : RF Power level control, 2(0~7) means power level . Samsung Electronics...
  • Page 18 H. “8 4” : High Power-mode On I. “9 6 * * * “ : Output RF power level is set max power “* * *” means AGC level and AGC level range is from 000 to 511. Samsung Electronics...
  • Page 19 “0 7” : Carrier On. “1 4” : TX Audio unmute. Set the audio generator output to 1kHz, 3.0Vrms. Measure the Tx voice deviation by using the HPF of 20Hz and the LPF of 99kHz (spec : less than ±12kHz). Samsung Electronics...
  • Page 20 “0 9 0 3 6 3 #” : Set channel to 363. “0 7” : Carrier On. “1 2” : RX Audio unmute. Set the equipment as following. RF frequency : 880.89MHz Input RF level : -80dBm Modulation frequency : 1kHz Frequency deviation : ±8kHz Measure audio AC level. Samsung Electronics...
  • Page 21 Registering: HHP HP8924C. Call : HP8924C HHP. Measure the Gated Power & Time. spec : Gated Power - at least 20dB Gated Time - Rising Time : below 6µs Falling Time : below 6µs Burst Time : below 1.25ms Samsung Electronics...

  • Page 22: Exploded View & Its Parts List

    5. Exploded View & its Parts List 5-1 Main Set Exploded View Samsung Electronics...

  • Page 23: Main Set Parts List

    MPR-SCREW CAP GH72-00672A PMO-EAR PIECE GH72-00665A PCT-WINDOW LCD GH72-10001A PPR-TAPE WINDOW BOHO GH73-00216A RMO-KEY PAD GH72-00489A PPR-KEYPAD DOME GH73-00218A RMO-HOLDER MIC GH73-40704A RMO-CONNECTOR COVER GH73-40705A RMO-MOBILE CAP GH42-00040A ANTENNA 6001-001140 SCREW-MACHINE 4PCS GH43-00161A BATTERY-STD 1000mAh GH75-00223E MEC-HANGER ROPE BLACK Samsung Electronics...

  • Page 24: Electrical Parts List

    VOLUME KEY SCH-8500,POLYIMIDE GH42-00040A ANTENNA SCH-8500,824~894/1850~1990Mhz GH43-00161A BATTERY 3.6V,1000mAh,-,0.5C,3.6V GH44-00099A DTC850 SCH-850/8500,AC/DC,12W,85/264V GH96-00783A SPH-7100,KORA,MICROPHONE ASS’Y GH96-00863A GRAPHIC LCD SCH-850,GRAPHIC LCD,LCD ASS’Y GH41-00061A PCB-RF SCH-8500,FR-4,6L,0.8t,118 X 155 GH41-00060A PCB-LOGIC SCH-8500,FR-4,-,0.8t,118 X 104mm 0405-001035 D202 DIODE-VARACTOR 1SV279,15V,3nA,USC,TP 0405-001035 D203 DIODE-VARACTOR 1SV279,15V,3nA,USC,TP 0405-001035...
  • Page 25 R-CHIP 4.7Kohm,5%,1/16W,DA,TP,1005 2007-000145 R261 R-CHIP 6.2Kohm,5%,1/16W,DA,TP,1005 2007-000147 R142 R-CHIP 8.2Kohm,5%,1/16W,DA,TP,1005 2007-000147 R205 R-CHIP 8.2Kohm,5%,1/16W,DA,TP,1005 2007-000148 R112 R-CHIP 10Kohm,5%,1/16W,DA,TP,1005 2007-000148 R115 R-CHIP 10Kohm,5%,1/16W,DA,TP,1005 2007-000148 R120 R-CHIP 10Kohm,5%,1/16W,DA,TP,1005 2007-000148 R138 R-CHIP 10Kohm,5%,1/16W,DA,TP,1005 2007-000148 R165 R-CHIP 10Kohm,5%,1/16W,DA,TP,1005 2007-000148 R206 R-CHIP 10Kohm,5%,1/16W,DA,TP,1005 Samsung Electronics...
  • Page 26 R-CHIP 100Kohm,5%,1/16W,DA,TP,1005 2007-000162 R170 R-CHIP 100Kohm,5%,1/16W,DA,TP,1005 2007-000162 R183 R-CHIP 100Kohm,5%,1/16W,DA,TP,1005 2007-000162 R184 R-CHIP 100Kohm,5%,1/16W,DA,TP,1005 2007-000163 R256 R-CHIP 120Kohm,5%,1/16W,DA,TP,1005 2007-000164 R253 R-CHIP 150Kohm,5%,1/16W,DA,TP,1005 2007-000165 R157 R-CHIP 200Kohm,5%,1/16W,DA,TP,1005 2007-000170 R262 R-CHIP 1Mohm,5%,1/16W,DA,TP,1005 2007-000171 R168 R-CHIP 0ohm,5%,1/16W,DA,TP,1005 2007-000171 R196 R-CHIP 0ohm,5%,1/16W,DA,TP,1005 Samsung Electronics...
  • Page 27 C-CERAMIC,CHIP 0.1nF,5%,50V,NP0,TP,1005 2203-000233 C240 C-CERAMIC,CHIP 0.1nF,5%,50V,NP0,TP,1005 2203-000233 C244 C-CERAMIC,CHIP 0.1nF,5%,50V,NP0,TP,1005 2203-000233 C247 C-CERAMIC,CHIP 0.1nF,5%,50V,NP0,TP,1005 2203-000254 C101 C-CERAMIC,CHIP 10nF,10%,16V,X7R,TP,1005,- 2203-000254 C103 C-CERAMIC,CHIP 10nF,10%,16V,X7R,TP,1005,- 2203-000254 C105 C-CERAMIC,CHIP 10nF,10%,16V,X7R,TP,1005,- 2203-000254 C107 C-CERAMIC,CHIP 10nF,10%,16V,X7R,TP,1005,- 2203-000254 C108 C-CERAMIC,CHIP 10nF,10%,16V,X7R,TP,1005,- 2203-000254 C120 C-CERAMIC,CHIP 10nF,10%,16V,X7R,TP,1005,- Samsung Electronics...
  • Page 28 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C204 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C206 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C210 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C212 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C214 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C216 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C218 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C220 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C222 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- Samsung Electronics...
  • Page 29 C-CERAMIC,CHIP 0.56nF,10%,50V,X7R,TP,1005 2203-005061 C102 C-CERAMIC,CHIP 100nF,+80-20%,16V,Y5V,TP,1005 2203-005061 C104 C-CERAMIC,CHIP 100nF,+80-20%,16V,Y5V,TP,1005 2203-005061 C106 C-CERAMIC,CHIP 100nF,+80-20%,16V,Y5V,TP,1005 2203-005061 C113 C-CERAMIC,CHIP 100nF,+80-20%,16V,Y5V,TP,1005 2203-005061 C119 C-CERAMIC,CHIP 100nF,+80-20%,16V,Y5V,TP,1005 2203-005061 C132 C-CERAMIC,CHIP 100nF,+80-20%,16V,Y5V,TP,1005 2203-005061 C155 C-CERAMIC,CHIP 100nF,+80-20%,16V,Y5V,TP,1005 2203-005061 C245 C-CERAMIC,CHIP 100nF,+80-20%,16V,Y5V,TP,1005 2203-005061 C246 C-CERAMIC,CHIP 100nF,+80-20%,16V,Y5V,TP,1005 Samsung Electronics...
  • Page 30 CN401 CONNECTOR-HEADER BOX,40P,2R,0.5MM,SMD-S,AUF 3722-001172 J200 JACK-AC POWER 2P,2.6PI,AU,BLK,NO GH71-00002A GD101 GROUNDING TERMINAL SCH-510,C1720,T0.1,- GH71-00002A GD102 GROUNDING TERMINAL SCH-510,C1720,T0.1,- GH71-00002A GD103 GROUNDING TERMINAL SCH-510,C1720,T0.1,- GH71-00002A GD104 GROUNDING TERMINAL SCH-510,C1720,T0.1,- GH71-00002A GD105 GROUNDING TERMINAL SCH-510,C1720,T0.1,- GH71-00002A GD106 GROUNDING TERMINAL SCH-510,C1720,T0.1,- Samsung Electronics...
  • Page 31 R-CHIP 1.8Kohm,5%,1/16W,DA,TP,1005 2007-007001 R329 R-CHIP 3.9KOHM,5%,1/16W,DA,TP,1005 2007-007001 R416 R-CHIP 3.9KOHM,5%,1/16W,DA,TP,1005 2007-007014 R427 R-CHIP 51KOHM,5%,1/16W,DA,TP,1005 2007-007107 R317 R-CHIP 100Kohm,1%,1/16W,DA,TP,1005 2007-007107 R443 R-CHIP 100Kohm,1%,1/16W,DA,TP,1005 2007-007137 R332 R-CHIP 1.2Kohm,1%,1/16W,DA,TP,1005 2007-007139 R412 R-CHIP 47Kohm,1%,1/16W,DA,TP,1005 2007-007142 R411 R-CHIP 10Kohm,1%,1/16W,DA,TP,1005 2007-007142 R424 R-CHIP 10Kohm,1%,1/16W,DA,TP,1005 Samsung Electronics...
  • Page 32 C-CERAMIC,CHIP 10nF,10%,16V,X7R,TP,1005,- 2203-000254 C451 C-CERAMIC,CHIP 10nF,10%,16V,X7R,TP,1005,- 2203-000254 C460 C-CERAMIC,CHIP 10nF,10%,16V,X7R,TP,1005,- 2203-000254 C464 C-CERAMIC,CHIP 10nF,10%,16V,X7R,TP,1005,- 2203-000278 C341 C-CERAMIC,CHIP 0.01nF,0.5pF,50V,NP0,TP,1005 2203-000330 C318 C-CERAMIC,CHIP 0.012nF,5%,50V,NP0,TP,1005 2203-000330 C430 C-CERAMIC,CHIP 0.012nF,5%,50V,NP0,TP,1005 2203-000438 C317 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C322 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- 2203-000438 C335 C-CERAMIC,CHIP 1nF,10%,50V,X7R,TP,1005,- Samsung Electronics...
  • Page 33 10uF,20%,6.3V,GP,TP,2012,- 2404-001064 C358 C-TA,CHIP 10uF,20%,6.3V,GP,TP,2012,- 2404-001064 C375 C-TA,CHIP 10uF,20%,6.3V,GP,TP,2012,- 2404-001064 C449 C-TA,CHIP 10uF,20%,6.3V,GP,TP,2012,- 2404-001086 C327 C-TA,CHIP 4.7uF,20%,6.3V,GP,TP,2012,- 2703-000190 L326 INDUCTOR-SMD 330nH,10%,0.8x1.6x0.8mm 2703-000213 L330 INDUCTOR-SMD 470nH,10%,0.8x1.6x0.8mm 2703-000301 L321 INDUCTOR-SMD 2.7uH,10%,0.8x1.6x0.8mm 2703-000301 L325 INDUCTOR-SMD 2.7uH,10%,0.8x1.6x0.8mm 2703-000310 L331 INDUCTOR-SMD 1.8uH,10%,0.8x1.6x0.8mm Samsung Electronics 6-10...
  • Page 34 AB,1.6x0.8x0.8mm,-,- 3301-001105 L421 CORE-FERRITE AB,1.6x0.8x0.8mm,-,- 3301-001120 L424 CORE-FERRITE BEAD AB,2.0x1.25x0.9mm,-,- 3705-001163 CONNECTOR-COAXIAL SMC,JACK,100mohm,50ohm,0.5dB 3710-001535 CN401 CONNECTOR-SOCKET 40P,2R,0.5MM,SMD-S,AUF 4709-001080 U304 RF POWER SPLITTER 2WAY,955-979MHz,12dB,-,TP 4709-001201 F407 FREQ-ISOLATOR 824-849MHz,13dB,0.65dB,1.5 4719-001047 U306 MODULE PLL MODULE,1720-1780MHz,510MHz GH71-00163A F303 NPR-DUPLEX CAN SCH-850,C1720S,0.2,- 6-11 Samsung Electronics...

  • Page 35: Block Diagram

    7. Block Diagram Samsung Electronics...

  • Page 36: Pcb Diagram

    8. PCB Diagram 8-1 Logic Top View Samsung Electronics...
  • Page 37 8-2 Logic Bottom View Samsung Electronics...
  • Page 38 8-3 RF Bottom View Samsung Electronics...

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