Related Manuals for Samsung SCH-470
Summary of Contents for Samsung SCH-470
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Page 1: Table Of Contents
CDMA Portable Cellular Telephone SCH-470 SERVICE Manual CONTENTS CDMA Portable Cellular Telephone 1. General Introduction 2. Specification 3. NAM Programming 4. Data Tr a n s f e r 5. Circuit Description 6. Exploded View and Its Parts List 7. PCB Diagrams 8. - Page 2 £ Samsung Electronics Co.,Ltd. APR. 1998. Printed in Korea Code No. : GH68-60687A...
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Page 3: General Introduction
1 . General Int roduct ion The SCH-470 cellular phone functions as only digital cellular phone working in CDMA (Code Division Multiple Access) mode. CDMA type digital mode applies DSSS (Direct Sequential Spread spectrum) mode which first came to be used in the military. - Page 4 ° ‹ MSC Receiver Frequency FA NO. CH. NO. CENTER FREQUENCY FA NO. CH. NO. CENTER FREQUENCY 1011 869.640MHz 882.120MHz 870.870MHz 883.350MHz 872.100MHz 884.580MHz 873.330MHz 885.810MHz 874.560MHz 887.040MHz 875.790MHz 888.270MHz 877.020MHz 889.270MHz 878.250MHz 890.910MHz 879.480MHz 892.140MHz 880.890MHz 893.370MHz Samsung Electronics...
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Page 5: Specification
°æ 24 dB Test 4 beyond °æ 24 dB Test 5 : 114 ° 50 ° 22 (Standard battery) Size (mm) 114 ° 50 ° 27 (Extended-life battery) Weight (g) : 114 (Standard battery) 154 (Extended-life battery) Samsung Electronics... - Page 6 Samsung Electronics...
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Page 7: Nam Programming
5. Setup NAM 4 ; Display the variable of CDMA used commonly when you select NAM 4. If you don't store the data by pressing STO key after modifying as explains, the data does not change. You can check the data by pressing VOLUME key without changing the data. Samsung Electronics... - Page 8 Preferred system selection for NAM2. Digital only Up to four NAMs are allowed for the phone. This lists one of the four NAMs. Pref NAM3... Preferred system selection for NAM3. Digital only Pref NAM4... Preferred system selection for NAM4. Digital only Samsung Electronics...
- Page 9 Default setting is 10640,8103,0,0,0,0 : ranges from 0 to 32,767 up to six SIDs. ¶S or ¶H CDMA Home System ID. CDMA HomeSID Enables the phone to allow mobile terminated calls while in Y e s the home system. Controls the types of registration allowed for the phone. Samsung Electronics...
- Page 10 See SID #1. SID #2 number See NID #1. NID #2 number See SID #1. SID #3 number See NID #1. NID #3 number See SID #1. SID #4 number See NID #1. NID #4 Samsung Electronics...
- Page 11 The NAM3 setup program is the same as °ÆNAM1°Ø . See NAM1. 3-5 Setting Up NAM4 LCD Display Key in Function -choose 'NAM4’. NAM Program 5:Setup NAM4 The NAM4 setup program is the same as °ÆNAM1°Ø . See NAM1. Samsung Electronics...
- Page 12 NAM Programming Samsung Electronics...
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Page 13: Dat A Transfer
4 . Dat a Transfer When the main board of a customer's cellular Displays SAMSUNG logo. To reenter phone is required to be replaced with a new one, to program mode, press F3 key again. or the customer is needed to use a phone lent from the service center while his phone is serviced, this Write the data of the customer’s phone... - Page 14 You can restart to read the data. Writing is interrupted in the middle of the operation ¶ You can clear the error message by pressing any key. due to some problem with the phone. Writing is cancelled. You can restart writing from the beginning. Samsung Electronics...
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Page 15: Circuit Description
The CPU controls all from the MSM. It also consists a DC-DC converter the circuitry. For the CPU clock, 27MHz resonator to supply -3.5V for fine view angle and LCD is used. reflector to improve the display efficiency. Samsung Electronics... - Page 16 ¶UFMCLK: TXclock used in FM mode. Power Down Control When the IDLE/ signal turns LOW, only the TX sections will be disabled. If both the IDLE/ and SLEEP/ change to LOW, all the pins except for the TCXO and 27MHz clock are disabled. Samsung Electronics...
- Page 17 (U111), and comes out to speaker. sent to the speaker unit. TX WBD, ST,SAT These signals are generated from MSM. The modulation level of TX WBD and ST is 8 kHz/dev, and SAT is ° 2 kHz/dev. Samsung Electronics...
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Page 18: Receiver Section
IF AGC output level is applied to BBA (Baseband Analog ASIC). The IF AGC amp (U302) keeps the signal at a constant level by controlling the gain. Dynamic range is 90dB, up gain +45dB, and down gain -45dB. Samsung Electronics... - Page 19 VOLTAGE CONTROLLED TEMPERATURE COMPENSATED CRYSTAL OSCILLATOR (VC- TCXO, U343) It provides 19.68 MHz reference frequency to PLL. A correct frequency tuning is made by the voltage control. Samsung Electronics...
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Page 20: Transmitter Section
°æ12.5 MHz first local signal. RF AUTOMATIC GAIN CONTROLLER AMP (U461, U464) The signal out to the base station should be a constant level. The TX RF AGC amp controls power to keep the signal at a constant level. Samsung Electronics... - Page 21 (R23//R24) °§ Vr IC = (R25//R77) [ R26//(•· R27)// (•‚ R28)//(•„ R29)] Vr = R47 + R48 R68 and C49 are used to compensate the phase difference occured due to the time delay for the circuit. Samsung Electronics...
- Page 22 U2 off. R45 and C36 are used to MPU through the analog switch U25. measured at compensate the phase difference caused by the the pin 14 of the MPU through U25. time delay. Vd = (R50 + VR21) + R55 Samsung Electronics...
- Page 23 It has a linear characteristic reset within a specified time by MPU, MPU will be by R51 and R52, and is measured at the pin 14 of automatically reset by the timer. the MPU through U25. Samsung Electronics...
- Page 24 Circuit Description 5-10 Samsung Electronics...
- Page 25 6. Expl oded Vi ew and i t s Par t s Li st 6-1 Fixed Phone Exploded View 6-2 Fixed Phone Parts List 6-3 Rapid Charger Exploded View 6-4 Cradle Dummy Ass’y & Cigar Lighter Adapter Samsung Electronics...
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Page 26: Exploded View And Its Parts List
Exploded View and its Parts List 6-1 Fixed Phone Exploded View Samsung Electronics... -
Page 27: Fixed Phone Parts List
GH75-11129B GH75-11129C GH75-11129D Earphone Dummy GH73-40624A Volume Key GH72-40626A Key Pad GH72-41317B Antenna GH42-10511A Motor Ass’y GH96-01029A Rear Case GH75-11130A Screw 6001-001046 Key Pad Ass’y GH59-10020A Shield Can GH72-41445A Main PBA GH72-41406A Battery GH94-00791A GH43-10307A Medium GH43-10062A Extended-life Samsung Electronics... -
Page 28: Rapid Charger Exploded View
Exploded View and its Parts List 6-3 Rapid Charger Exploded View SEC.CODE : GH96-01053A Samsung Electronics... -
Page 29: Cradle Dummy Ass'y & Cigar Lighter Adapter
Exploded View and its Parts List 6-4 Cradle Dummy Ass’y & Cigar Lighter Adapter SEC.CODE : GH75-11215A Samsung Electronics... - Page 30 Exploded View and its Parts List Samsung Electronics...
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Page 34: Electrical Parts List
POWER 0504-000172 TR-DIGITAL Q120 AUDIO 0504-000172 TR-DIGITAL Q111 POWER 0504-001016 TR-DIGITAL Q485 0505-001062 FET-GAAS U301 0505-001095 FET-SILICON U106 POWER 0505-001119 FET-SILICON Q302 0505-001165 FET-SILICON U104 POWER 0505-001170 FET-SILICON U484 0601-000355 LED,CHIP,RED D116 POWER 0801-000885 IC-CMOS LOGIC U105 LOGIC Samsung Electronics... - Page 35 R-CHIP 0 1/16W L450 2007-000137 R-CHIP 2K 1/16W R417 2007-000138 R-CHIP 100 1/16W R154 LOGIC 2007-000140 R-CHIP 1K 1/16W R147,R132,R204 AUDIO 2007-000140 R-CHIP 1K 1/16W R192,R205,R156,R158 LOGIC 2007-000140 R-CHIP 1K 1/16W R188,R209,R109 POWER 2007-000140 R-CHIP 1K 1/16W R345,R346 Samsung Electronics...
- Page 36 2007-000153 R-CHIP 22K 1/16W R474 2007-000155 R-CHIP 27K 1/16W R251,R252,R170,R136 AUDIO 2007-000155 R-CHIP 27K 1/16W R463 2007-000157 R-CHIP 47K 1/16W R139,R166,R147 AUDIO 2007-000157 R-CHIP 47K 1/16W R118 POWER 2007-000157 R-CHIP 47K 1/16W R349 2007-000157 R-CHIP 47K 1/16W R481,R482,R483,R484 Samsung Electronics...
- Page 37 Electrical Parts List SEC. CODE DESCRIPTION PART NO. POSITION 2007-000159 R-CHIP 56K 1/16W R148 AUDIO 2007-000159 R-CHIP 56K 1/16W R167 LOGIC 2007-000161 R-CHIP 82K 1/16W R146,R150 LOGIC 2007-000162 R-CHIP 100K 1/16W R151,R153 AUDIO 2007-000162 R-CHIP 100K 1/16W R169,R172 LOGIC 2007-000162 R-CHIP 100K 1/16W R120,R116,R111,R108,R110 POWER...
- Page 38 R-CHIP 39K 1% 1/16W R411 2007-007141 R-CHIP 240 1/16W R309,R310 2007-007480 R-CHIP 130K 1% 1/16W R101 POWER 2007-007529 R-CHIP 91K 1% 1/16W R102 POWER 2203-000234 C-CHIP 100P 1005 C145,C185,CX102,CX201 LOGIC 2203-000234 C-CHIP 100P 1005 C345,C370,C331,C334,C347, C359,C348 2203-000234 C-CHIP 100P 1005 C360-C362 Samsung Electronics...
- Page 39 C-CHIP 1NF 1005 C113 POWER 2203-000438 C-CHIP 1NF 1005 C302,C301,C309,C311,C310, C377,C305,C306 2203-000438 C-CHIP 1NF 1005 C336,C338,C307,C368,C327, C344,C315,CX001 2203-000438 C-CHIP 1NF 1005 C450,C414,C428,C426,C424, C422,C436,C434 2203-000438 C-CHIP 1NF 1005 C432,C430,C496,C442,C459, C460,C464,C419 2203-000438 C-CHIP 1NF 1005 C454,C408 2203-000466 C-CHIP 1PF 1005 C332,C325,C317 Samsung Electronics...
- Page 40 C-CHIP 22NF 1005 C141,C142,C154 AUDIO 2203-001416 C-CHIP 33NF 1005 C415 2203-001432 C-CHIP 47NF 1005 C365 2203-001437 C-CHIP 5PF 1005 C137,C138 LOGIC 2203-001724 C-CHIP 47uF CX302 POWER 2203-005054 C-CHIP 4.7P 1005 C466 2203-005061 C-CHIP 100NF 1005 C129,C128,C146,C136 AUDIO 7-10 Samsung Electronics...
- Page 41 L310 2703-000237 INDUCTOR 750NH L403 2703-000261 INDUCTOR 390NH L311 2703-000300 INDUCTOR 1UH L305,L314,L343,L346,L342 2703-000300 INDUCTOR 1UH L455 2703-000301 INDUCTOR 2.7UH L312,L344 2703-001031 INDUCTOR 33NH L401 2703-001049 INDUCTOR 100NH L402 2703-001166 INDUCTOR 5.6NH L391 2703-001167 INDUCTOR 8.2NH L341 Samsung Electronics 7-11...
- Page 42 FILTER-SAW 836.5MHz F451 2909-001004 FILTER-DUPLEXER 881MHz F301 3710-001105 CONNECTOR-SOCKET 2P J102 POWER 3710-001117 CONNECTOR-SOCKET 24P CON100 LOGIC 3710-001302 CONNECTOR-SOCKET 18P J101 AUDIO 3711-002048 CONNECTOR-HEADER CON50 LOGIC 3722-001172 JACK POWER J104 AUDIO GH07-20521A M101 POWER GH39-20008A CBF-SIGNAL J301 7-12 Samsung Electronics...
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Page 43: Troubleshoot Ing
8 . Troubleshoot ing 8-1 Logic Section 8-1-1 No Power Samsung Electronics... - Page 44 Troubleshooting 8-1-2 Abnormal Initial Operation (Normal +3.3V voltage source) Samsung Electronics...
- Page 45 Troubleshooting 8-1-3 Abnormal Backlight Operation Samsung Electronics...
- Page 46 Troubleshooting 8-1-4 Abnormal Key Data Input Samsung Electronics...
- Page 47 Troubleshooting 8-1-5 Abnormal Keytone Samsung Electronics...
- Page 48 Troubleshooting 8-1-6 Abnormal Alert Tone Samsung Electronics...
- Page 49 Troubleshooting 8-2 RF Section 8-2-1 RF Secton Troubleshooting Samsung Electronics...
- Page 50 Troubleshooting 8-2-2 Receiver Part Samsung Electronics...
- Page 51 Troubleshooting 8-2-3 Transmitter Part Samsung Electronics...
- Page 52 Troubleshooting 8-4 Desk-Top charger 8-4-1 Check 1 8-10 Samsung Electronics...
- Page 53 Troubleshooting Samsung Electronics 8-11...
- Page 54 Troubleshooting 8-4-2 Check 2 8-12 Samsung Electronics...
- Page 55 Troubleshooting 8-4-3 Check 3 Samsung Electronics 8-13...
- Page 56 Troubleshooting 8-14 Samsung Electronics...
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Page 57: Test Command Table
T_SIO_MODE_I SIO mode change. 67(C6, 3, 6) T_READ_BATT_I Reads Low-Bayyery in the standby, talk. 68(C8, 0, 3) T_VBATT1_I Set the low battery position in the standby. 69(C9, 0, 3) T_VBATT2_I Set the low battery position in the talking. Samsung Electronics... - Page 58 After you get a desired test value by performing these commands, if you want to save the value into EEPROM, use T-SAVE-VAL-I command to store the test value into the corresponding position. OP: Operation Command Number ¶S AB: Input Argument Byte Number RB: Return Byte Number Samsung Electronics...
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Page 59: Block & Circuit Diagrams
1 0 . Bl ock & Ci r cui t Di agr ams 10-1 Block Diagram 10-2 Circuit Diagram 10-2-1 Power Circuit Diagram 10-2-2 Audio Circuit Diagram 10-2-3 RX Circuit Diagram 10-2-4 TX Circuit Diagram 10-2-5 Logic Circuit Diagram 10-2-6 Memory Circuit Diagram Samsung Electronics 10-1...