Portable mp3-cd player mp3-cd, wma-cd, cd-da playback (18 pages)
Summary of Contents for Samsung DV7720KV
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SELECT PLAY/PAUSE STOP SKIP/SEARCH 11. Schematic Diagrams PREVIOUS NEXT SOUND LAST MEMORY PROGRAM POWER ON/STANDBY CLEAR NTSC/PAL 10/0 OPEN/CLOSE SELECT RETURN PLAY/PAUSE STOP PREV. SKIP/SEARCH NEXT SOUND LAST MEMORY • Samsung Electronics Co., Ltd. Dec. 1996. Printed in Korea. AH68-20143A...
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Examples: Handle brackets, Metal Part metal cabinets, screwheads and control shafts. The current measured should not Ohmmeter exceed 0.5 milliamp. Reverse the power- plug prongs in the AC outlet and repeat. Fig. 1-2 Insulation Resistance Test Samsung Electronics...
Make sure that the 8. Always connect a test instrument's ground portion around the serviced part has not lead to the instrument chassis ground been damaged. before connecting the positive lead; always remove the instrument's ground lead last. Samsung Electronics...
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OLET ALTTINA NAKYMATTÖMALLE LASERSATEILYLLE ALA KATSO SATEESEEN! Market. VARNING :OSYNLIG LASERSTRÅLNING NAR DENNA DEL AR OPPNAD OCH SPARREN AR URKOPPLAD BETRAKTA EJSTRÅLEN! Fig. 1-4 Warning Labels (Location: Disc Clamper, Inner Side of Unit Door or Nearby Unit Chassis ) Samsung Electronics...
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1.6 mm distance from the objective lens Terminal. See diagrams below: surface on the optical pick-up block.) THE UNIT (1) WRIST-STRAP CONDUCTIVE SHEET FOR GROUNDING short short short short terminal terminal terminal terminal SOH-A1 SOH94T4N SOH91CI(CAR,walkman) (CMS-V10,CMS-V30) SOH91VI(LDP) (CMS-V10,CMS-V30) Samsung Electronics...
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• Digital audio characteristics Frequency response 20Hz~20KHz S/N ratio 95dB Dynamic range 90dB Channel Separation 75dB Total harmonic distortion 0.03% (at 1KHz - 0dB) • AC3 output level : 0.5 Vp-p Designs and specifications are subject to change without notice.) Samsung Electronics...
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Specifications and Comparision Charts 2-2 Comparision Charts MODEL DV7720KV DV4720V DV7700KV DV4700V BLOCK Karaoke No use No use Tray MODEL DV7720KV DV4720V DV7700KV DV4700V BUTTON Once more no use no use Repeat no use no use Karaoke/standard no use no use...
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KAR/NOR NORMAL OR KARAOKE SELECT -> LOW:NORMAL DAC-LATCH PCM1715 LATCH MDATA MAIN-TO-FMV MICOM COMMUNICATION DATA MCLK MAIN-TO-FMV MICOM COMMUNICATION CLOCK DATA “KS5514,TC9409,PCM1715 DATA” KLATCH TC9409 LATCH “KS5514,PCM1715,TC9409 CLK” NO CONNECTION KS5514 LATCH NO CONNECTION /RESET-I “MICOM,OSD RESET INPUT” Samsung Electronics...
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AUDIO FINAL MUTE(10/01) GRID8 PORT4 GRID9 PORT4 GENLOCK LATCH VDDVPP PORT4 CLEAR SCAN PORT4 PORT5 PORT5 ATTN PIN N O 4(Q1) 5(Q2) 6(Q3) 7(Q4) 14(Q5) 13(Q6) 12(Q7) 11(Q8) EXPANDER CLOSE LD/CD,CDV CLV SCAN RF COR SP ON CL,CDV/CD OPEN Samsung Electronics...
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S2,(50),O DISC2 NTSC/PAL S6,(54),1 SURROUND VOICE CANCEL VOICE CHANGE S7,(55),K LAST MEMORY SOUND OPEN/CLOSE S8,(56),J SKIP,SEARCH, NEXT PLAY,PAUSE,SELECT STOP,RETURN S10,(58),A S11,(59),B S12,(60),F KRAOKE/STANDARD SCORE S13,(61),G REPEAT NATURAL KEY UP S14,(62),C S15,(63),E ONCE MORE KEY DOWN S16,(64),D POWER SKIP,SEARCH,BACK Samsung Electronics...
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3. Disassembly 3-1 Disassembling the Top-Cabinet (Fig 1.) 1. Loosen 3 screws ! (3 x 10 black). 2. Push top 10mm backward horizontally, and separate it upward. Figure 1. Samsung Electronics...
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1. Separate ass'y front by pulling it horizontally using 3 knobs volume. 2. Loosen 5 hooks more or less(2 hooks on right and left side, and 3 hooks on the bottom) 3. Seperate ass'y front by turning it to the arrow direction. knob volume hook bottom view Figure 2. Samsung Electronics...
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3. Separating flexible connected to PCB, and separate it by pulling the part connected 2EA of holder PCB. 4. Separate the BRACKET PCB and COVER REAR. Bracket PCB/G Bracket PCB Cover Rear Main PCB Front PCB Figure 3. Samsung Electronics...
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2. Pull out the try at the middle of set, and then Disconnect the flexible wire (6pin). (Check the flexible wire connected to the set, when tray is not opened) 3. Pull out the tray to the arrow direction. Flexible wire Tray Figure 4. Samsung Electronics...
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3-5 Disassembling the ass'y clamper (Fig-5) 1. Lossen 5 screws (3 x 10 yellow) , and separate 2 bracket horders. 2. Raise the ass'y clamper to the vertical direction, and separate it. ass'y clamper bracket holder bracket holder Figure 5. Samsung Electronics...
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Disassembly 3-6 Disassembling the ass'y bracket lever (Fig-6) 1. Lossen 1 screw (3 x 10 yellow). 2. separate the ass'y bracket lever. bracket lever Figure 6. Samsung Electronics...
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Disassembly 3-7. Disassembling the ass'y deck (Fig-7) 1. Lossen 4 screws (4 x 18yellow) . 2. Raise the deck to the vertical direction, and separate it. ass'y deck Figure 7. Samsung Electronics...
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1. Lossen 3 screws (3 x10 yellow). 2. Raise the power PCB to the vertical direction, and separate it. 3. Pull the front PCB 18mm forward horizontally, and raise to the vertical direction, and separate it. power PCB front PCB Figure 8. Samsung Electronics...
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1. REF(REFERENCE FREQUENCY) ADJUSTMENT. 2. TILT BALANCE ADJUSTMENT 3. TRACKING BALANCE ADJUSTMENT 4. LD FOCUS BALANCE ADJUSTMENT 5. CD FOCUS BALANCE ADJUSTMENT 6. RF GAIN ADJUSTMENT 7. TRACKING GAIN ADJUSTMENT 8. FOCUS GAIN ADJUSTMENT 9. VIDEO LEVEL ADJUSTMENT 10. PM ADJUSTMENT Samsung Electronics...
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Alignment and Adjustment 5-1 Adjustment Point Location Samsung Electronics...
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3 .Adjust SVR2 so that the center of waveform at TB locates at 0V. 5-5 LD Focus Balance Adjustment 1. Insert STLD-¥ , STLD-¥–LD disc and press PLAY button. 2. Adjust SVR5 so that the waveform at TP2(RFV) is at the maximum. Samsung Electronics...
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1. Insert YEDS-18,YEDS-43 disc and press PLAY button. 2. Adjust SVR3 so that the waveform at RFC is 1Vp_p. 1Vp-p 5-8 Tracking Gain Adjustment 1. Adjust SVR7 as shown in picture(one hour clockwise). 5-9 Focus Gain Adjustment 1. Adjust SVR6 as shown in picture(twohour clockwise). Samsung Electronics...
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2. Set the unit on chapter 7(STLD-¥ ), chapter 3(STLD-¥– ) at STILL mode. 3. Adjust VVR2 so that the waveform of VECTORSCOPE is clear It can be adjustable by observing pictures on screen. Match the white luminance point with the black luminance point Samsung Electronics...
OK Replace power PCB ASS’Y Replace PIC4 Check for voltage “8V” Check for voltage Replace PIC5 “-8V” Check for voltage Replace PQ5,PQ6 “5V” Check for voltage Replace PQ3,PQ4 “-5V” Replace PFET1,PIC1,PIC2,PR4,PR75,PD1 Check for voltage Ever “5V” Samsung Electronics...
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Check for video signal Check for connection of VCW1 at pin7 of VIC10 on the on the FMV PCB FMV PCB Check for video signal Check for connection of VCW1 on the FMV PCB at emitter of NQ1,NQ2 Replace NQ1,NQ2 Samsung Electronics...
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SCW 1 : -5V : from 5V to 0V Check for change of voltage at Pin 8 of SCW 1 when PLAY button is pressed : 1.2V 4DSUM Replace SQI Replace SIC 6 Replace MIC 1 Replace pick-up Samsung Electronics...
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PIN 39 of VIC 1 check for IRQ signal Replace VIC 2 at PIN 90 of VIC 2 check for HREF,PBHD See "LD DOES NOT PLAY" signal at PIN 41,43 of VIC 2 See "Blue - background not shown" Samsung Electronics...
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Replace SIC6 at Pin 27 of SIC6 : 1 ~ 2V Check for signal Replace SIC6 at Pin 32 of SIC6 : 2 ~ 3V 63.5µsec Check for signal Replace SIC6 at Pin 46 of SIC6 DISC is defective Samsung Electronics...
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Check for change of voltage at Pin 34 of SIC 6 Replace when PLAY button is pressed SIC 6 : 2V Check for voltage at Pin 47, 46 of SIC 6 : 5V, 0V See "SPINDLE MOTOR dose not work" Samsung Electronics...
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VIC 2 check for VQ 2A check for CLK(28MHz) at Replace VIC 1 PIN 16 of VIC 1 check for H-sync signal at Replace VIC 2 PIN 42 of VIC 2 check for Pattern at PIN 42 of VIC2 Samsung Electronics...
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Check for signals Replace 2.6V at Pin 14 ~ 18 of PIC5 spindle 2.5V when MOTOR motor 2.4V is turned Check for signals at Pin 1 ~ 6 of PIC5 Replace PIC5 when MOTOR is turned Replace PIC6 Samsung Electronics...
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Troubleshooting 6-9 Disc is reckless speeding DISC IS RECKLESS SPEEDING Check for FG signal at pin FG of TCW1 See "SPINDLE MOTOR PROBLEM" Check for FG signal at pin 51 of SIC6 Replace TICI or TQ3 Replece SIC6 Samsung Electronics...
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Check for voltage at base of SQ15 : 1.5V Check for SQ15, SZD1 and power source : -1 Check for pulse at pin 8, 9 of SIC5 Replace SIC5 Replace pick-up or check for connector between MAIN and pick-up Samsung Electronics 6-10...
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Check for signal at pin 8 of SIC6 Replace parts of EQ circuit for phase compensation response of tracking Check for signal at pin 8, 9 of SIC4 Replace SIC4 Check for pick-up, connector wire and SR67 Samsung Electronics 6-11...
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Pin 9 of SIC5 when PLAY button is pressed : +, - Replace VX1 alternately or VIC2 SIC5 or SR73 is defective or check SCWI or See "Power Source Problem" Replace pick-up or See "No disc error" Samsung Electronics 6-12...
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CD SW,LD SW of SCW1 CD S/W, LD S/W are defective Check for change of voltage at SM of SIC5 : +, - alternafely SCW1 is defective or SLIDER MOTOR is defective SIC6 is defective SIC5 is defective Samsung Electronics 6-13...
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PIN 7 of VIC10 check for video signal Check for clock at pin 1 of VIC5 at pin 15 of VIC 4 Check for clock at pin 2,6 of VIC6 clock ; NTSC ; 14.318 MHz PAL ; 17.734MHz Samsung Electronics 6-14...
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Check for signal at pin Check for signals at pin 11,12,14 of AIC106, pin 36,37,38 of AIC106, 76,78,96 of MIC101 Check for 16MHz at pin Check for 16MHz at pin 8 of AIC106 4 of AIC104 Next page Replace AIC106 Samsung Electronics 6-15...
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Check for signals at Check for signals at Check for signal lines pin 13,16 of AIC104 pin 1,2,3 of AIC104 Check for signals at Check for signal lines pin 26,27,28 of AIC104 Check for soldering then replace AIC104 Next page Samsung Electronics 6-16...
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Check for soldering then replace AIC103 Check for signals at Check for soldering then pin 1 of AIC101 and replace AIC101 ,102 pin 7 of AIC102 Check for signals at Check for signal lines and soldering RCA - JACK Samsung Electronics 6-17...
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18,47 of AIC103 Check for signal Check for signals at Check power source and at pin 1of AIC109 pin 5,8 of AIC105 soldering then replace AIC109 Check for soldering Go to ÒA Òat No digital Sound of page 6-16 Samsung Electronics 6-18...
4. Exploded View and Parts List 4-1 Cabinet front parts 4-1-1 Exploded view Parts list : DV7720KV/DV4720V CODE NO. DESCRIPTION SPECCIFICATION Q¡ ¡ fl fl REMARK AH64-30364A CABINET-FRONT ABS 94HB BLACK AH64-50312D DOOR-GUIDE ABS 94HB BLACK AH64-40317A DECORATION-DOOR ABS 94HB BLACK...
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AH63-70135A SHEET-POWER PVC BLACK COMM0N AH69-20018A CUSHION-STOPPER RUBBER BLACK COMM0N 6003-000276 SCREW (YELLOW) TAP TITE BH 3X10 COMM0N 6003-000275 SCREW (BLACK) TAP TITE B 3X10 COMM0N AH64-70003F BADGE-BRAND AL GOLD 35mm COMM0N Fig 4-3. Cabinet front Exploded View(DV4700V) Samsung Electronics...
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Exploded View and Parts List 4-2 Main Mechanical exploded view and parts list Fig 4-3. Main Mechanical Exploded View Samsung Electronics...
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Exploded View and Parts List 4-4 Clamper(2CD) Exploded View & Parts List PARTS DESCRIPTION SPECIFICATION Q'TY REMARK Fig 4-5 Clamper Exploded View Samsung Electronics...
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Exploded View and Parts List 4-5 Deck Exploded View & Parts DECK DECK AH09-50254A 3809-001033 AC60-12130A 8 FE SCREW-TAP TITE BH Fig 4-6 Deck Exploded View Samsung Electronics...
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Exploded View and Parts List 4-6 Tray Exploded View & Parts(DV7720KV/DV4720V) 4-6-1 Assy-Tray(2CD) Parts List Fig 4-7 Tray Exploded View Samsung Electronics...
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Schematic Diagrams 4-6-2 Assy Tray(1CD) Parts & Exploded view(DV7700KV/DV4700V) 4-7. Bracket Lever Exploded View & Parts List Specification Q'TY Remark Description DESCRIPTION SPECIFICATION REMARK Q'TY Samsung Electronics...
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7.Electronic Parts List Loc No New Parts Description ; Specification Remark DV7720KV/CHN VIDEO CD LD PLAYER;CHN AH59-10080D REMOCON;-,-,LC7461,32,DV7620KV,S.S AH90-10719K ASSY-PCB,SMPS;DV7720KV/DV7700KV/DV4720V/DV4700V S.N.A FUSE 3601-000170 FUSE-FERRULE;250V,1.6A,TIME LAG,GLASS,5X20M 2301-000371 C-FILM,PEF;100NF,1%,250V,TP,-,- PC10A 2201-000808 C-CERAMIC,DISC;2.2NF,10%,400V,Y5P,TP,12X7.5,7 2301-000371 C-FILM,PEF;100NF,1%,250V,TP,-,- 2201-000808 C-CERAMIC,DISC;2.2NF,10%,400V,Y5P,TP,12X7.5,7 2201-000808 C-CERAMIC,DISC;2.2NF,10%,400V,Y5P,TP,12X7.5,7 2201-000808 C-CERAMIC,DISC;2.2NF,10%,400V,Y5P,TP,12X7.5,7 2301-000140 C-FILM,PEF;10NF,10%,630V,BK,16.5X9.5X5.7X...