Samsung MX-F870, Service Manual

Page 1: ...70 ZP SERVICEMANUAL MINI Compact System MX F870 Contents 1 Precaution 2 Product Specification 3 Disassembly and Reassembly 4 Troubleshooting 5 PCB Diagram 6 Schematic Diagram Refer to the service manu...

Page 2: ...ode 4 1 4 1 1 No Power 4 2 4 1 2 No Output 4 3 4 2 Measures to be taken when the Protection Circuit operates 4 7 4 2 1 Operation of Power Block Protection Circuit 4 7 4 2 2 Check AMP in Power Protecti...

Page 3: ...Diagram 6 1 6 2 MAIN 1 6 2 6 3 MAIN 2 6 3 6 4 MAIN 3 6 4 6 5 MAIN 4 6 5 6 6 MAIN 5 6 6 6 6 1 Test Point Wave Form 6 7 6 7 MAIN 6 6 8 6 7 1 Test Point Wave Form 6 9 6 8 MAIN 7 6 10 6 8 1 Test Point Wa...

Page 4: ...h alterations might create a safety hazard Also any design changes or additions will void the manufacturer s warranty 4 Leakage Current Hot Check Figure 1 1 AC Leakage Test WARNING Do not use an isola...

Page 5: ...rect any potential hazards 7 Observe the original lead dress especially near the following areas Antenna wiring sharp edges and especially the AC and high voltage power supplies Always inspect for pin...

Page 6: ...sulation between the blades of the AC plug and accessible conductive parts examples metal panels input terminals and earphone jacks 6 Insulation Checking Procedure Disconnect the power cord from the A...

Page 7: ...not use freon propelled chemicals These can generate electrical charges that damage ESDs 4 Use only a grounded tip soldering iron when soldering or unsoldering ESDs 5 Use only an anti static solder re...

Page 8: ...h x 2 IR Amp Specialized Function Bluetooth Only MX F830B Front Speak LED Lighting CD Ripping Able to ripping while listening New Bass Sound System Called GIGA Sound Twin USB Connectivity USB Host Por...

Page 9: ...IR Amp Specialized Function Front Speak LED Lighting CD Ripping Able to ripping while listening New Bass Sound System Called GIGA Sound Twin USB Connectivity USB Host Portable Audio In 3 5 phi Stereo...

Page 10: ...30 W x 2 IR Amp Specialized Function Front Speak LED Lighting CD Ripping Able to ripping while listening New Bass Sound System Called GIGA Sound Twin USB Connectivity USB Host Portable Audio In 3 5 ph...

Page 11: ...ity 12 dB FM Tuner Total harmonic distortion 0 6 Signal Noise ratio 35 dB Usable sensitivity 70 dB AM Tuner optional Total harmonic distortion 4 Reading Speed 4 8 5 6 m sec CD Disc CD 12 cm Compact Di...

Page 12: ...Total Output Power 1200 Watts MAX 1650 Watts MAX Front speaker output 400 W CH 6 100 Hz 330 W CH 6 100 Hz Rear speaker output Only F870 165 W CH 12 100 Hz Subwoofer 400 W 6 100 Hz 330 W 6 100 Hz Frequ...

Page 13: ...350 W FRONT DISPLAY VFD VFD VFD VFD DIMMER O O O O Bluetooth X MX F830B Only X X X CD DVD CD CD CD CD DVD MP3 O O O O USB HOST O O O O CD RIPPING O O O O TAPE X X X X AUDIO IN O O O O HEADPHONE X X X...

Page 14: ...ssories Item Item code Batteries AAA 4301 000116 TUNER AUX REPEAT GIGA REPEAT A B AUTO CHANGE Remote Control AH59 02554A User s Manual AH68 02606J FM Antenna MX F830B Only FM AM Antenna MX F830 MX F85...

Page 15: ...instructions before performing any work as the IC chips on the PCB are vulnerable to static electricity In order to assemble reverse the order of disassembly Description Description Photo 1 Front Kit...

Page 16: ...mbly and Reassembly Description Description Photo 3 Unplug 2 Cables 4 Front Kitting Assy 5 Front PCB Assy Unfasten 18 Screws and Unplug 1 Cable BH 3 10 WHITE 3 2 Copyright 1995 2013 SAMSUNG All rights...

Page 17: ...3 Disassembly and Reassembly Description Description Photo 6 VFD PCB JACK PCB 7 SMPS PCB Assy Unfasten 2 Screws BH 3 10 BLACK Copyright 1995 2013 SAMSUNG All rights reserved 3 3...

Page 18: ...and Reassembly Description Description Photo 8 Unfasten 3 Screws Unplug 2 wires and power cord BH 3 10 BLACK 9 Unfasten 5 Screws BH 3 10 WHITE 10 SMPS PCB Assy 3 4 Copyright 1995 2013 SAMSUNG All rig...

Page 19: ...ly and Reassembly Description Description Photo 11 MAIN PCB Assy Unfasten 2 Screws BH 3 10 BLACK 12 Unfasten 2 Screws Unplug 2 Cables and the FAN BH 3 10 BLACK Copyright 1995 2013 SAMSUNG All rights r...

Page 20: ...3 Disassembly and Reassembly Description Description Photo 13 Unfasten 4 Screws BH 3 10 SILVER 14 MAIN PCB Assy 3 6 Copyright 1995 2013 SAMSUNG All rights reserved...

Page 21: ...oting 4 1 Checkpoints by Error Mode Oscilloscope Setting Values Normal Voltage 24 MHz 32 768 KHz Voltage DIV 1 Vol DIV 1 Vol DIV 1 Vol DIV TIME DIV 1 uS DIV 10 ns DIV 0 1 uS DIV Copyright 1995 2013 SA...

Page 22: ...Power Check pattern or replace FVFDV Check VFD Voltage in MAIN PCB CON13 2 4 Check VFD PCB VFD voltag e FVFD 1 2 31 32 Check or replace SMPS Check or replace SMPS Check UIC1 pattern or Replace UIC1 Ch...

Page 23: ...C UIC1 and MPEG IC MIC1 signal Check MAIN PCB ESS IC PIN83 88 89 Replace IRS2053 Replace FET IRF6775 Replace SMPS Check signal input and signal pattern or Replace MAIN PCB Replace UIC1 or MIC1 Yes Yes...

Page 24: ...OMP VS VB VCC IN GND VAA HO CSH OCSET VREF COM DT VSS CSD LO COMP VS VB VCC IN GND VAA 2203 007598 5 6K 4 7K 40N S 8 2K 3 3K 65N S 390 520 220 420KH Z 100V 100NF A 5V_PW 63V UNDEFINED IRS2092ST RPBF 4...

Page 25: ...VB VCC IN GND VAA E B C HO CSH OCSE T VREF COM DT VSS CSD LO COMP VS VB VCC IN GND VAA 2 0CH 2 1C H OPEN 220 420KHZ 390 520 5 6K 4 7K 40NS 8 2K 3 3K 65NS 2203 007598 IRS2092STRPBF 10UF 220NF 100NF 100...

Page 26: ...50V 120PF AC4FL 100NF AC6F AGND AC5F 100NF 10OHM AR5F IN2 VEE OUT2 VCC IN2 IN1 IN1 OUT1 FIL EQ F ILTER TUNER A5V_PW A 5V_PW 1 2KOHM 6 3V 10UF 10UF 6 3V 8 2KOHM 2 7KOHM 27KOHM 1 2KOHM AGND 1 5NF 50V 1...

Page 27: ...he AMP IC Speaker Wire Short 2 If temperature of the AMP IC is over 150 3 There is no power supply for amp Protection Circuit operates when power problem occurs in the SMPS Protection Location Pin No...

Page 28: ...er cord during the test Measurement Resistance using Tester CH MX F830 2CH MX F830B 2CH MX F870 4 2CH MX F850 2 1CH F R CH 2 2 k SUBWOOFER 2 2 k REAR 2 2 k If Measured Resistance is very different fro...

Page 29: ...eck 1 Power On 2 CD open status 3 Push the number NEXT for 5 seconds check the MICOM version 4 Push the number PREVIOUS for 5 seconds check the MPEG version MPEG Update 1 Prepare Rom file at USB Memor...

Page 30: ...sert the region code The region code is inserted by the remote control 1 During AUX status MX F870 850 830 830B Push the ENTER button 5 seconds MX F870 850 830 830B 2 When displayed TEST import 46 to...

Page 31: ...ndonesia Asia Hongkong 06 07 KOR 08 Latin American 09 Mexico 10 Philippines 11 12 Russia semi_mic 13 M E Asia Israel Saudi Argentina Uruguay Turkey MIC 14 Taiwan 15 USA Canada 16 New Zealand Australia...

Page 32: ...ndonesia Asia Hongkong 36 37 KOR 38 Latin American 39 Mexico 40 Philippines 41 42 Russia semi_mic 43 M E Asia Israel Saudi Argentina Uruguay Turkey MIC 44 Taiwan 45 USA Canada 46 New Zealand Australia...

Page 33: ...ndonesia Asia Hongkong 66 67 KOR 68 Latin American 69 Mexico 70 Philippines 71 72 Russia semi_mic 73 M E Asia Israel Saudi Argentina Uruguay Turkey MIC 74 Taiwan 75 USA Canada 76 New Zealand Australia...

Page 34: ...Asia Hongkong 96 97 KOR 98 Latin American 99 Mexico 100 Philippines 101 102 Russia semi_mic 103 M E Asia Israel Saudi Argentina Uruguay Turkey MIC 104 Taiwan 105 USA Canada 106 New Zealand Australia 1...

Page 35: ...Asia Hongkong 126 127 KOR 128 Latin American 129 Mexico 130 Philippines 131 132 Russia semi_mic 133 M E Asia Israel Saudi Argentina Uruguay Turkey MIC 134 Taiwan 135 USA Canada 136 New Zealand Austra...

Page 36: ...ply VFD Power Supply VFD 4 16 USB2_GND USB2 GND USB2 GND USB2_GND 16 6 LED_5 1V 5 B 5V AMP Power Supply AMP Power Supply A 5V 5 17 AUX_L AUX1 Left Signal AUX1 Left Signal AUX1_L 17 5 ST5 1V 6 MGND GND...

Page 37: ...MAIN PCB Top MIC1 MIC2 AF IC 1 UIC1 AIC4 AIC3 AIC1 AIC2 FLCN1 FRCN1 R F C N 1 B TC N 1 R F C N 2 USCN1 C N 6 UCN1 SCN1 C O N 1 3 R F IC 1 1 3 4 5 6 7 8 9 2 TP1 TP1 Copyright 1995 2013 SAMSUNG All rig...

Page 38: ...GND 19 DVD_VR 20 DVD_MPD 21 DVD_LD 22 RF 23 VCC_5V 6 RFCN2 Deck Open Close Control Pin No Signal 1 SP 2 SP 3 SL 4 SL 5 INSW 6 OUTSW 7 GND 8 D 9 D 7 USCN1 AUX MIC USB Control Pin No Signal 1 USB1_5V 2...

Page 39: ...5 PCB Diagram 5 2 2 Test Point Wave Form TP1 Copyright 1995 2013 SAMSUNG All rights reserved 5 4...

Page 40: ...5 PCB Diagram 5 3 MAIN PCB Bottom 5 5 Copyright 1995 2013 SAMSUNG All rights reserved...

Page 41: ...5 PCB Diagram 5 4 FRONT JACK PCB Top Copyright 1995 2013 SAMSUNG All rights reserved 5 6...

Page 42: ...5 PCB Diagram 5 5 FRONT JACK PCB Bottom FCN4 F C N 5 1 2 5 7 Copyright 1995 2013 SAMSUNG All rights reserved...

Page 43: ...DP 14 USB2_DP 15 USB2_GND 16 USB2_GND 17 AUX1_L 18 AGND 19 AUX1_R 20 AGND 21 MIC_SIGN 22 MIC_SEN 23 AUX1_SEN 2 FCN4 VOLUME KEY Control Pin No Signal 1 DGND 2 REMOCON 3 KEY_AD2 4 KEY_AD3 5 ST5 1V 6 LED...

Page 44: ...5 PCB Diagram 5 6 FRONT VFD PCB Top FCN2 FCN1 2 1 FIC1 FIC2 5 9 Copyright 1995 2013 SAMSUNG All rights reserved...

Page 45: ...2 M5 1V 13 VFD_CE 14 VFD_CLK 15 VFD_DO 16 KEY_AD3 17 DGND 18 UART_RX 19 UART_TX 2 FCN2 VOLUME KEY Control Pin No Signal 1 DGND 2 DGND 3 DGND 4 JLED9 5 JLEDBL 6 JLEDB 7 JLEDBR 8 VOL_LED1 9 VOL_LED2 10...

Page 46: ...5 PCB Diagram 5 7 FRONT VFD PCB Bottom FIC1 FIC2 5 11 Copyright 1995 2013 SAMSUNG All rights reserved...

Page 47: ...5 PCB Diagram 5 8 SPK LED PCB Top 1 2 3 4 L B 1 R B 1 L B 5 R B 5 Copyright 1995 2013 SAMSUNG All rights reserved 5 12...

Page 48: ...L1 2 L2 3 L3 4 VCC 2 LB5 Front Speaker Led Control Left Pin No Signal 1 L1 2 L2 3 L3 4 VCC 3 RB5 Front Speaker Led Control Rright Pin No Signal 1 L6 2 L5_1 3 L4_1 4 RB1 Front Speaker Led Control Rrigh...

Page 49: ...5 PCB Diagram 5 9 SPK LED PCB Bottom Copyright 1995 2013 SAMSUNG All rights reserved 5 14...

Page 50: ...5 PCB Diagram 5 10 SMPS PCB Top CNM8 5 2 CNM8 5 1 1 2 5 15 Copyright 1995 2013 SAMSUNG All rights reserved...

Page 51: ...ND 2 VP 3 VFD 4 VFD 5 B 5V 6 MGND 7 P ON 8 M 12V 9 DGND 10 ST5 5V 11 ST5 5V 12 VARI_SMPS 2 CNM851 AMP Voltage Supply Pin No Signal 1 63V 2 63V 3 63V 4 63V 5 63V 6 SGND 7 SGND 8 SGND 9 SGND 10 SGND 11...

Page 52: ...5 PCB Diagram 5 11 SMPS PCB Bottom 5 17 Copyright 1995 2013 SAMSUNG All rights reserved...

Page 53: ...LED Driver AUX USB1 FM AM MIC FL SL RL Update DVD CD Engine Tuner Control Key VFD Display Front Led Lighting SPK Led Lighting FR SR RR The Micom IC is R5F100PGAFB 100P MPEG IC is ES8396SCD GSWD same...

Page 54: ...UT ADJ LX EN COM P NC SS FB AGND VI N PGND BST LX VD SGND GND VI N FB ON OFF E B C S D G SGND SGND SGND SGND 63V 63 V 63 V 63 V 63V 63V 63V 63 V 63 V 63 V FROM SM PS MGND SGND DGND DGND VPS P ON A 5V...

Page 55: ...AI N VCC N C RREF VREFC BI ASC B C E RESET RESET VDD GND E B C E B C E B C E B C E B C E B C DGND DGND DGND EQ VFD_CLK VFD_CE VFD_DO KEY_AD3 UARTF_RX UARTF_TX REMOCON VOL_UP KEY_AD1 VOL_DOWN KEY_AD2 S...

Page 56: ...DB 5 DB 6 DB 7 VS33 VD33 CLK DI IO0 VCC HOLD IO3 GND WP IO2 DO IO1 CS SDA VSS WC VCC SCL E2 NC NC FREP BT OPTION BT OPTION SPI_CS FLASH SPI_CS3 EMULATOR SPI EMULATOR OP EN N A OP EN 155 25 141 75 128...

Page 57: ...OTK VOFC VOFC VOSL VOSL VOTR VOTR Vcc1 REV FWD REGO1 VINSL REGO2 TRB_1 VINFC E B C E B C E B C EMULATOR OPTION GND LD_GND GND AGND AGND OPE N DVD ONLY CD ONLY USB2_DP RF B DVD ONLY DVD ONLY CD ONLY SP...

Page 58: ...VCC IN2 IN1 IN1 OUT1 E B C E B C Q3 Q2 Q1 Q0 E B C IN2 VEE OUT2 VCC IN2 IN1 IN1 OUT1 TUR18 0 OHM USE FAN CIRCUIT 27K F870 8 2K 27K 27K 8 2K 8 2K 39K 39K 39K F850 8 2K F830 56K 5 6K 56K 5 6K 27K 8 2K 8...

Page 59: ...6 Schematic Diagram 6 6 1 Test Point Wave Form TP1 Copyright 1995 2013 SAMSUNG All rights reserved 6 7...

Page 60: ...C E B C E B C HO CSH OCSET VREF COM DT VSS CSD LO COMP VS VB VCC IN GND VAA 2CH OMIT 220 420KHZ 390 520 SP EAKER OVER UNDER VOLTAGE PROT ECTION OMIT OMIT 4 2CH 2 1CH AM OMIT USE USE 3716 001316 3716 0...

Page 61: ...6 Schematic Diagram 6 7 1 Test Point Wave Form TP1 Copyright 1995 2013 SAMSUNG All rights reserved 6 9...

Page 62: ...C IN GND VAA E B C E B C HO CSH OCS ET VREF COM DT VSS CSD LO COMP VS VB VCC IN GND VAA 2 0CH 2 1CH OPEN 2 0CH OPEN 220 420KHZ 220 420KHZ 390 520 390 520 5 6K 4 7K 40NS 8 2K 3 3K 65NS 5 6K 4 7K 40NS 8...

Page 63: ...6 Schematic Diagram 6 8 1 Test Point Wave Form TP1 Copyright 1995 2013 SAMSUNG All rights reserved 6 11...

Page 64: ...HVES F_LEDBL 330OHM U2R1 F_LEDBL FR8L VCC_5 1V 1 8W LTL87HVES GND VCC OUT E B C E B C E B C DGND DGND FLED8L FLED9 FLEDBR FLED8 VOL_LED1 DGND VOL_LED4 VOL_LED3 VOL_LED2 USB1_DN USB1_DN VOL_LED5 REM OC...

Page 65: ...GR7 LED3 LED2 LED1 SG10 KS10 SG11 KS11 SG14 KS14 SG15 KS15 SG12 KS12 SG13 KS13 SG9 KS9 SG8 KS8 UARTF_TX VFD_CE DGND VOL_LED1 J LED8 J LEDBL J LED9 VOL_LED3 VOL_LED4 VOL_LED5 VOL_LED6 DGND DGND VOL_LED...

Page 66: ...B C E B C E B C E B C E B C E B C E B C E B C E B C E B C E B C E B C E B C E B C E B C E B C GND SCLK SDATA RESET VCC 120OHM 1 8W 330OHM 1 8 W 50V 100NF DGND UNDEF INED 3857 ST 330OHM 1 8W KSA733 Y D...

Page 67: ...VDD_1 VCC_1 VCC_1 VCC_2 VDD VDD VCC VCC VCC_1 VCC_2 VCC_3 VCC_3 VCC_2 VCC_2 VCC_1 VDD L1 VCC TOTAL 48 EA LEDS L 1 L6_2 L6_2 L1_2 L1_2 L4_2 L5_2 L5_2 2 2 2 2 L4_2 2 2 L3_2 2 2 L3_2 L2_2 L2_2 2 2 2 2 R...

Page 68: ...8 MMSZ5248B ZDM901 MMS Z5248B ZDM901 MMS Z5248B JA3 JA3 VX801S 14D751 VX801S 14D751 RM805 10 1608 RM805 10 1608 RM816 14K 3216 RM816 14K 3216 LB801 0R 20 12 LB801 0R 20 12 RM902 1K 1608 RM902 1K 1608...

Page 69: ...2K 1608 RS953 1K 1608 RS953 1K 1608 RS 803 22 1608 RS 803 22 1608 CS 931 16V 470uF CS 931 16V 470uF RS 913 150K 1608 RS 913 150K 1608 RS 905 100 1608 RS 905 100 1608 RS96 2 1K 1608 RS96 2 1K 1608 RS 9...

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