Samsung DVD-P721M Service Manual Download Page 32

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Exploded Views and Parts List

4-3

Loc. No

Parts No.

Description ; Specification

Remark

AH97-00968C

ASSY FRONT CABINET;ABS94HB,DVD-P721M,-

AH97-00969B

ASSY-DOOR;ABS94HB,DVD-P721M,-

AH64-01556A

KNOB-VOLUME;DVD-A901,ABS 94HB,-,-,-,-,GR

AH64-01554A

KNOB-JOG;DVD-A901,ABS 94HB,-,-,-,-,GRY,

AH64-01555A

KNOB-SHUTTLE;DVD-A901,ABS 94HB,-,-,-,-,G

AH61-00792A

LEG-FRONT;DVD-N501,ABS 94HB,-,BLK,-,-

AH65-00003A

CLAMP CORE;DVD-M101,NYLON 66,-,-,-,-

101

AH64-00933Q

CABINET-TOP;DVD-A921M/XAA,PCM T0.65,-,-,

150

6003-000275

SCREW-TAPTITE;BH,+,B,M3,L10,BLK ,SWCH101

151

6003-000262

SCREW-TAPTITE;BH,+,B,M3,L6,CBLACK,SWRCH1

151

6003-000276

SCREW-TAPTITE;BH,+,B,M3,L10,ZPC(YEL),SWC

601

AH92-01545A

ASSY PCB-MAIN;DVD-A921M/XAA,MAIN PCB,USA

602

AK92-00009A

ASSY PCB-JACK;DVD-P721M/XAA,JACK PCB ASS

610

AC39-10200N

POWER CORD;EP2,SPT-2,AWG#18,1.8MT,WAFER,

701

AK92-00043B

ASSY PCB-KEY;DVD-P721M,KEY PCB ASS’Y

702

AK92-00043A

ASSY PCB-M-STICK;DVD-P721M,M-STICK

703

AK92-00043C

ASSY PCB-HP;DVD-P721M,HEADPHONE

UT01

AH59-00093V

REMOCON-ASS’Y;DVD-P721M/XAA,-,-,-,-,-,-,

UT02

AH59-01043A

REMOCON-ASS’Y;DVD-S321/XAA,-,-,-,-,-,-,-

Summary of Contents for DVD-P721M

Page 1: ...shooting 4 Exploded Views and Parts List 5 Electrical Parts List 6 Block Diagram 7 PCB Diagrams 8 Wiring Diagram 9 Schematic Diagrams Manual DVD PLAYER CONTENTS SERVICE MANUAL DVD P721M SCREEN FIT MEMORY STICK JOG SHUTTLE ELECTRONICS Samsung Electronics Co Ltd MAY 2002 Printed in Korea AK82 00210A ...

Page 2: ...rwriters Laboratories UL 1270 40 7 With the instrument s AC switch first in the ON position and then in the OFF position measure from a known earth ground metal water pipe conduit etc to all exposed metal parts of the instrument antennas handle brackets metal cabinets screw heads metallic overlays control shafts etc espe cially any exposed metal parts that offer an electri cal return path to the c...

Page 3: ...ched out of place or frayed wiring Do not change spacing between a component and the printed circuit board Check the AC power cord for damage 5 Components parts and or wiring that appear to have overheated or that are otherwise damaged should be replaced with components parts and or wiring that meet original specifications Additionally determine the cause of overheating and or damage and if necess...

Page 4: ...nd lead last 2 The service precautions are indicated or printed on the cabinet chassis or components When servic ing follow the printed or indicated service precau tions and service materials 3 The components used in the unit have a specified flame resistance and dielectric strength When replacing components use components which have the same ratings Components i enti fied by shading by or by in t...

Page 5: ...posure of the assem bly 3 Use only a grounded tip soldering iron to solder or unsolder ESD devices 4 Use only an anti static solder removal devices Some solder removal devices not classified as anti static can generate electrical charges suffi cient to damage ESD devices 5 Do not use freon propelled chemicals These can generate electrical charges sufficient to damage ESD devices 6 Do not remove a ...

Page 6: ... sheet This gives them the same ground as the sheet 4 Remove the optical pick up block 5 Perform work on top of the conductive sheet Be careful not to let your clothes or any other static sources to touch the unit Be sure to put on a wrist strap grounded to the sheet Be sure to lay a conductive sheet made of copper etc Which is grounded to the table Fig 1 3 6 Short the short terminal on the PCB wh...

Page 7: ... Assy 3 Make solder land 2 points short on Pick up See Fig 1 4 4 Disassembly the Pick up 1 5 2 Assembly 1 Replace the Pick up 2 Remove the soldering 2 points on Pick up 3 Reassemble the Deck Assy SOLDER LAND 2 POINTS SHORT PICK UP ASS Y Note If the assembly and disassembly are not done in correct sequence the Pick up may be damaged Fig 1 4 ...

Page 8: ...ssembly and Reassembly 2 1 Cabinet and PCB 2 1 1 Top Cabinet Removal 1 Remove 3 Screws Œ on the back Top Cabinet 2 Lift up the Top Cabinet in direction of arrow Œ 3 SCREWS Fig 2 1 Top Cabinet Removal Note Reassembly in reverse order ...

Page 9: ...e Door Tray in direction of arrow A 3 Close Tray Œ and power off Note If Tray Œ doesn t open insert a Screw driver into the Emergency hole ˇ as shown in detailed draw ing and then push it in the direction of arrow B Open Tray manually 2 Side View ˇ EMERGENCY HOLE SCREW DRIVER B Œ TRAY DOOR TRAY A Fig 2 2 Door Tray Removal ...

Page 10: ... Knob Volume Œ 2 Release 6 Hooks ˇ ˆ and remove Ass y Front Cabinet Ø 3 Remove Knob Jog Knob Shuttle 6 Screws Key PCB and Memory Stick PCB Ô 4 Remove 4 Screws and Headphone PCB Ò Œ KNOB VOLUME ˆ 2 HOOKS 2 HOOKS 6 SCREWS Ø ASS Y FRONT CABINET KEY PCB KNOB SHUTTLE KNOB JOG 1 HOOK ˇ 1 HOOK 4 SCREWS Ò HEADPHONE PCB Ô MEMORY STICK PCB ...

Page 11: ...S Y Œ 3 SCREWS FLAT CABLE CONNECT WIRE JACK PCB MAIN PCB DCN3 DCN2 DCN1 PCN1 CN8 2 1 4 Ass y Deck Removal 1 Disconnect Flat Cable Connect Wire from DCN1 DCN2 and DCN3 on Main PCB 2 Remove 3 Screws Œ from the Ass y Deck and lift it up Fig 2 4 Ass y Deck Removal ...

Page 12: ...amsung Electronics 2 5 ˆ MAIN PCB 3 SCREWS 1 SCREW Œ 2 SCREWS ˇ JACK PCB Fig 2 5 Main PCB Jack PCB Removal 2 1 5 Main PCB Jack PCB Removal 1 Remove 3 Screws Œ and lift up the Jack PCB ˇ 2 Remove 3 Screws and lift up the Main PCB ˆ ...

Page 13: ...2 6 Samsung Electronics Disassembly and Reaasembly JACK PCB KEY PCB HEADPHONE PCB MEMORY STICK PCB MAIN PCB 2 2 PCB Location Fig 2 6 PCB Location ...

Page 14: ...IRECTION CONNECTOR NO NO Œ FLAT CABLE DECK ASS Y MAIN PCB DCN1 ˇ FLAT CABLE DECK ASS Y MAIN PCB DCN2 ˆ CONNECT WIRE HCN1 HOUSING PCB MAIN PCB DCN3 Ø CN8 MAIN PCB JACK PCB CN1 PCN1 MAIN PCB JACK PCB PCNS1 Ô CN3 JACK PCB KEY PCB KCN1 Ò MSCN1 MAIN PCB MEMORY STICK PCB MSJ1 Ú Æ HCN1 JACK PCB HEADPHONE PCB J1 ı CT1 CT2 CT3 CT4 CT5 CT6 CT7 CT8 Fig 2 7 Connector Diagram 2 3 Connector Diagram ...

Page 15: ...ider Housing ˇ in the direction arrow A 2 When the Tray Disc comes out a little pull it in the direction arrow B by hand 3 Pull the Tray Disc to disassemble while simultaneously pushing 2 Stoppers ˆ left right in the direction arrow C D Fig 2 8 Tray Disc Removal A Œ SCREW DRIVER EMERGENCY HOLE ˇ SLIDER HOUSING TRAY DISC B C ˆ STOPPER ˆ STOPPER D ...

Page 16: ...4 2 Assy P U Deck Removal 1 Disconnect DCN2 Œ DCN3 2 Lift down the Assy P U Deck ˇ while simultaneously pushing 2 Hooks ˆ in the direction of arrow A B Fig 2 9 Assy P U Deck Removal Œ DCN2 ˆ HOOK HOOK DCN3 ˇ ASSY P U DECK A B Assembly Point SLIDER HOUSING ...

Page 17: ... Gear Tray 4 Lift up the Slider Housing ˆ 5 Remove the soldering Ø of 2 points Red Black 6 Remove 2 Screws and lift down the Motor Load Assy 7 Push the 3 Hooks bottom side in the direction arrow C and lift up the Housing PCB 8 Push the Hooks Ô and remove Deck PCB Fig 2 10 Housing Ass y Removal Œ BELT ˇ PULLEY GEAR GEAR TRAY MOTOR LOAD ASSY 3 HOOKS HOUSING PCB Ô HOOK Ø SOLDERING 2 SCREWS ˆ SLIDER H...

Page 18: ...sung Electronics 2 11 2 4 4 Sub Chassis Removal 1 Remove the Soldering of Motor Feed wire Œ 2 Remove the 4 Screws 3 Lift up the Ass y Brkt Deck ˇ Fig 2 11 Sub Chassis Removal 4 SCREWS ˇ ASSY BRAK DECK Œ SOLDERING OF MOTOR FEED WIRE ...

Page 19: ... B Gear Feed A ˇ 3 Remove 2 Screws 4 Remove Shaft Pick Up ˆ and Pick Up Ass y Ø 5 Remove 1 Screw 6 Remove 2 Screws 7 Remove 3 Spring Spindle and Motor Spindle Ass y Fig 2 12 Ass y Brkt Deck Removal 2 SCREWS Œ WASHER GEAR FEED B 2 SCREWS 1 SCREW ˆ SHAFT PICK UP ˇ GEAR FEED A Ø PICK UP ASS Y SPRING SPINDLE MOTOR SPINDLE ...

Page 20: ...tputted from object lens at play key input No focus incoming and no disc occurs Yes No B A No focus incoming FE in SIC1 25 is within specified range SIC3 26 27 output are normal Check open state from SIC3 to pick up Check RIC1 and A B C D input Check SIC3 Yes Yes No No A ...

Page 21: ... Motor and connection Check MIC1 Yes No SLED SLED SIC3 32 33 output are normal Check SIC3 Yes No NO LD CD ON RIC1 19 is 5V Current exceeds 0 1A LD out pick up replace Open check in related circuit Check MIC1 Yes Yes Yes No No Divide RQ2 emitter terminal voltage and 5V real voltage difference into 10ohm B ...

Page 22: ...Focus On Yes Yes Yes A See Fine Seek Check No Yes Check pick up No FINE SEEK Check FINE SEEK MIRR signal RIC1 65 is missing TZCO signal SIC1 24 is occurs Track incomming is delayed TE is within 2V and 3V Pick up transfer smooth Check RIC1 Peripheral curcuit Check SIC1 Peripheral curcuit Time out due to many jump counts Check SIC1 peripheral circuit SIC1 33 output is normal SIC3 28 29 terminal outp...

Page 23: ...c motor Check SIC1 MIC1 Check SIC3 soldering and power Check path to RIC1 and SIC1 Check RIC1 soldering and power RIC1 70 output are normal RIC1 71 output is normal Check RIC1 peripheral circuit and A B C D Yes Yes Yes Yes Yes Yes No No No No No No No Tray open close MIC1 36 37 is Open L L Close H H Check SIC3 35 36 output at open close Check signal line state from SIC3 35 36 to tray motor Micom M...

Page 24: ... Check ZIC1 150 output Check ZIC1 147 CD VCD 16 9344MHz DVD 18 432MHz Yes Yes No No AOP3 1 7 output is normal Check AOP3 peripheral circuit Yes No Base terminal level of AQ1 AQ2 are L Check FIC1 47 mute Yes No Headphone output error HPJ1 L R output is normal HIC1A 1 7 output is normal Check 3 pin Headphone jack peripheral soldering shot Check HPJ1 L R output error Check HOP1 1 7 output Yes No No Y...

Page 25: ... ZIC1 peripheral circuit Check AIC3 Yes No No Yes No Power 120 Voltage Standby LED OFF PFD01 error PDS01 voltage is missing Replace PQR11 Replace fuse Check PDS01 04 No No Yes Collector of PQR11 output normal voltage Check 2 d voltage No Operation of PQR11 is normal Replace PQR12 Yes No Switching operation of PQR11 is normal Replace PQR11 Check feed back Yes Yes No Yes ...

Page 26: ...connection between ZY1 and pin 139 in ZIC1 Check the soldering of ZIC1 Yes Yes No No Analog signals are inputted normally VIC1 6 8 Yes No Power is normal at VIC1 1 34 Yes No Yes Check the connection netween pin 133 in ZIC1 and VIC1 Check the connection betwen VIC1 and PDS52 Check the soldering of VIC1 No Check the connection between VIC1 and output jack Pin of VDD25 VDD33 in ZIC1 has normal level ...

Page 27: ...k the connection between ZY1 and pin 139 in ZIC1 Check the soldering of ZIC1 Yes Yes No No Analog signals are inputted normally VIC1 11 14 16 Yes No Power is normal at VIC1 1 34 No Yes Check the connection netween pin 133 in ZIC1 and VIC1 Check the connection betwen VIC1 and PDS52 Check the soldering of VIC1 No Check the connection between VIC1 and output jack Pin of VDD25 VDD33 in ZIC1 has normal...

Page 28: ... of VIC1 No Check the connection between VIC1 and output jack Pin of VDD25 VDD33 in Zic1 has normal level Check the connection between pin 1 in PCNS1 and VDD33 in ZIC1 Yes No VSW1 video select switch is down position Move the select switch to down positon Yes No Peak to peak voltage level of VIC1 33 is about 2V Video signal of about 1V appears at output jack No Yes Check the RCA cable F Progressiv...

Page 29: ...rror POWER is about 3 2V at J1 2 8 in MEMORY STICK B D Yes No Check the connection between MEMORY STICK B D and MSCN1 17MHz clock input is normal at MSIC1 28 Yes No Check the bus clock 6 75MHz between ZIC1 203 and MSIC2 3 Check the MSCN1 peripheral soldering shot ...

Page 30: ...4 1 4 Exploded View and Parts List 4 1 Cabinet Assembly 4 2 Deck Assembly Page 4 2 4 4 ...

Page 31: ...4 2 4 1 Cabinet Assembly S N A Service Not Available UT01 UT02 1 4 5 701 703 702 151 3 101 151 151 150 601 ASSY PCB MAIN S N A ASS Y CABINET BOTTOM 150 13 151 CN1B DECK DVD MECHA S N A 602 ASS Y PCB JACK 2 12 12 SLOW M STICK 151 610 ...

Page 32: ...00933Q CABINET TOP DVD A921M XAA PCM T0 65 150 6003 000275 SCREW TAPTITE BH B M3 L10 BLK SWCH101 151 6003 000262 SCREW TAPTITE BH B M3 L6 CBLACK SWRCH1 151 6003 000276 SCREW TAPTITE BH B M3 L10 ZPC YEL SWC 601 AH92 01545A ASSY PCB MAIN DVD A921M XAA MAIN PCB USA 602 AK92 00009A ASSY PCB JACK DVD P721M XAA JACK PCB ASS 610 AC39 10200N POWER CORD EP2 SPT 2 AWG 18 1 8MT WAFER 701 AK92 00043B ASSY PCB...

Page 33: ...Exploded Views and Parts List 4 4 4 2 Deck Assembly H108 H106 S N A H105 H107 H102 H211 H203 H241 H212 905 H104 H250 H103 H207 H208 S N A H202 H210 H204 H205 H209 H206 901 900 904 906 903 ...

Page 34: ... 4 3 1 2X25 1 B H106 AH66 00124A GEAR TRAY DP 7 POM M90 44 H107 AH66 00125A SLIDER HOUSING DP 7 POM H108 AH63 00217A TRAY DISC ABS BLK DP 7 H202 AH73 00023A RUBBER INSULATOR BUTYL RUBBER DP 3 4 000 H203 AH61 50327A SHAFT P U DP 3 SUS420J2 L84 7 OD3 H204 AH66 00075A GEAR FEED A POM M90 44 H205 AH66 00170A GEAR FEED B DP 7S POM M90 44 0 5 14 H206 AC60 30306A WASHER SLIT ID2 1 OD5 0 T0 5 POLYS H207 A...

Page 35: ...Exploded Views and Parts List 4 6 MEMO ...

Page 36: ...6W DA TP 1608 MR29 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR3 2007 000074 R CHIP 100ohm 5 1 16W DA TP 1608 MR31 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR32 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR33 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR34 2007 000074 R CHIP 100ohm 5 1 16W DA TP 1608 MR35 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR4 2007 000074 R CHIP 100ohm 5 ...

Page 37: ... 000091 R CHIP 12Kohm 5 1 16W DA TP 1608 RR22 2007 000091 R CHIP 12Kohm 5 1 16W DA TP 1608 RR23 2007 000655 R CHIP 27Kohm 5 1 16W DA TP 1608 RR24 2007 000134 R CHIP 33Kohm 5 1 16W DA TP 1608 RR25 2007 000070 R CHIP 0ohm 5 1 16W DA TP 1608 RR26 2007 000102 R CHIP 100Kohm 5 1 16W DA TP 1608 RR3 2007 000091 R CHIP 12Kohm 5 1 16W DA TP 1608 RR32 2007 000102 R CHIP 100Kohm 5 1 16W DA TP 1608 RR33 2007 ...

Page 38: ...A TP 1608 SY1 2801 000261 CRYSTAL UNIT 33 8688MHz 50ppm 28 AAA 12p VR1 2104 001068 VR SMD 10Kohm 25 1 20W TOP ZC1 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 ZC10 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 ZC100 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 ZC101 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 ZC102 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 ZC1...

Page 39: ...00475 R NETWORK 33ohm 5 63mW L CHIP 8P TP ZRA2 2011 000475 R NETWORK 33ohm 5 63mW L CHIP 8P TP ZRA3 2011 000475 R NETWORK 33ohm 5 63mW L CHIP 8P TP ZRA4 2011 000475 R NETWORK 33ohm 5 63mW L CHIP 8P TP ZRA5 2011 000816 R NETWORK 100ohm 5 63mW L CHIP 8P TP ZRA6 2011 000816 R NETWORK 100ohm 5 63mW L CHIP 8P TP ZY1 2801 004132 CRYSTAL UNIT 13 5MHZ 10PPM ATS 49 U 24PF ZY3 2801 003554 CRYSTAL UNIT 27MHz...

Page 40: ... 37 9KHZ 940NM FL1 2701 000114 INDUCTOR AXIAL 10uH 10 2 5x3 4mm FQ1 0501 000341 TR SMALL SIGNAL KSC1623 L NPN 200mW SOT FQ3 0501 000341 TR SMALL SIGNAL KSC1623 L NPN 200mW SOT FR1 2001 000281 R CARBON 100OHM 5 1 8W AA TP 1 8X3 2MM FR10 2007 000282 R CHIP 100KOHM 5 1 10W DA TP 2012 FR101 2001 000273 R CARBON 100KOHM 5 1 8W AA TP 1 8X3 2M FR102 2001 000273 R CARBON 100KOHM 5 1 8W AA TP 1 8X3 2M FR10...

Page 41: ... AE TP 6x16mm PRD31 2001 000221 R CARBON 1 2KOHM 5 1 8W AA TP 1 8X3 2M PRD32 2001 000003 R CARBON 330ohm 5 1 8W AA TP 1 8x3 2mm PRR11 2003 002117 R METAL OXIDE S 330Kohm 5 1W AA TP 3 3 PRR12 2003 000314 R METAL OXIDE 47ohm 5 2W AE TP 6x16mm PRR13 2003 000314 R METAL OXIDE 47ohm 5 2W AE TP 6x16mm PRR14 2001 000003 R CARBON 330ohm 5 1 8W AA TP 1 8x3 2mm PRR15 2001 000003 R CARBON 330ohm 5 1 8W AA TP...

Page 42: ... MLC AXIAL 100nF 80 20 50V Y5V HC2 2202 002037 C CERAMIC MLC AXIAL 100nF 80 20 50V Y5V HE1 2401 002165 C AL 100uF 20 16V GP TP 6 3x7 5 HE2 2401 002165 C AL 100uF 20 16V GP TP 6 3x7 5 HIC1 1201 000191 IC OP AMP 4558 DIP 8P 300MIL DUAL 20V mV HPJ1 3722 001465 JACK PHONE 3P 6 43PI AG BLK HR1 2001 000290 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM HR10 2001 000527 R CARBON 22OHM 5 1 8W AA TP 1 8X3 2MM HR2 ...

Page 43: ...5 8 Samsung Electronics Electrical Parts List MEMO ...

Page 44: ...n Controller TMP91C829 RF Amp DPD KS1462B ZIC7 K8D3216UBM Flash Memory 32Mb DVD CD Processor Digital Servo KS1454A MSICI MB86189 M S controller Front Control Micom UPD780232 Memory Stick Pick Up I V Amp ZIVA 5 Ei Mi Xi A V Decoder CVBS Y Pr Pb L R Headphone H P AMP Optical Audio DAC PCM 1738 Compo Serial I F 5 Line UART2 UDE 4 line Y B Pb C R Pr Comp G Y VIC1 LA73054 LPF AMP LPF AMP ...

Page 45: ...Block Diagram 6 2 Samsung Electronics MEMO ...

Page 46: ...Samsung Electronics 8 1 8 Wiring Diagram ...

Page 47: ...Wiring Diagram 8 2 Samsung Electronics MEMO ...

Page 48: ...Samsung Electronics 7 1 7 PCB Diagrams 7 1 Main 7 2 7 2 Jack 7 3 7 3 Headphone 7 4 7 4 Key 7 4 7 5 Memory Stick 7 4 ...

Page 49: ...PCB Diagrams 7 2 Samsung Electronics 7 1 Main COMPONENT SIDE SOLDER SIDE ...

Page 50: ...PCB Diagrams Samsung Electronics 7 3 7 2 Jack ...

Page 51: ...PCB Diagrams 7 4 Samsung Electronics 7 3 Headphone 7 5 Memory Stick 7 4 Key ...

Page 52: ... 9 1 Power 9 2 9 2 AV Decoder Main Micom 9 3 9 3 Servo 9 4 9 4 Front Micom VFD Display 9 5 9 5 Video 9 6 9 6 Audio 9 7 9 7 Headphone 9 8 9 8 Key 9 9 9 9 Memory Stick 9 9 Block Identification of PCB Main PCB Component Side Jack PCB Conductor Side ...

Page 53: ...Schematic Diagrams 9 2 Samsung Electronics 9 1 Power ...

Page 54: ...Schematic Diagrams Samsung Electronics 9 3 9 2 AV Decoder Main Micom ...

Page 55: ...Schematic Diagrams 9 4 Samsung Electronics 9 3 Servo ...

Page 56: ...Schematic Diagrams Samsung Electronics 9 5 9 4 Front Micom VFD Display ...

Page 57: ...Schematic Diagrams 9 6 Samsung Electronics 9 5 Video ...

Page 58: ...Schematic Diagrams Samsung Electronics 9 7 9 6 Audio ...

Page 59: ...Schematic Diagrams 9 8 Samsung Electronics 9 7 Headphone ...

Page 60: ...Schematic Diagrams Samsung Electronics 9 9 9 8 KEY 9 9 Memory Stick ...

Page 61: ...Schematic Diagrams 9 10 Samsung Electronics MEMO ...

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