Samsung DVD-P421 Service Manual Download Page 24

Page: 24 / 59

Troubleshooting

Samsung Electronics

3-5

CD/VCD/DVD L/R output error

(Mixed Audio output)

Normal DATA 0 is

input in AIC4-2?

Analog output of

AIC4-7, 8 is

normal?

Check AVJ2 peripheral

soldering shot.

Check ZIC1-121 output.

Check ZIC1-125

(CD/VCD ; 16.9344MHz,

DVD ; 18.432MHz)

Yes

AOP4-1, 7 output

is normal?

Check AOP1 peripheral circuit.

Yes

Base terminal level

of AQ1, AQ3

are "L"?

Check FIC1-47 mute.

Yes

Headphone output error

AVJ2 L/R output is

normal?

HOP1-1, 7 output

is normal?

Check 3 pin-Headphone-jack

peripheral soldering shot.

Check AVJ2 L/R output error.

Check HOP2-1, 7 output.

Yes

Summary of Contents for DVD-P421

Page 1: ...assembly 3 Troubleshooting 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 P421 ELECTRONICS Samsung Electronics Co Ltd MAR 2002 Printed in Korea AK82 00194A ...

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: ...he 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 Side View ˇ EMERGENCY HOLE SCREW DRIVER B Œ TRAY DOOR TRAY A Fig 2 2 Door Tray Removal ...

Page 10: ... HOOKS ˇ 1 HOOK ˆ 2 HOOKS Ø ASS Y FRONT CABINET KNOB JOG KEY PCB 5 SCREWS 1 HOOK Fig 2 3 Ass y Front Cabinet Removal 2 1 3 Ass y Front Cabinet Removal 1 Remove Knob Volume Œ 2 Release 6 Hooks ˇ ˆ and remove Ass y Front Cabinet Ø 3 Remove Knob Jog 5 Screws and Key PCB ...

Page 11: ...y DECK ASS Y Œ 3 SCREWS FLAT CABLE CONNECT WIRE MAIN PCB DCN1 DCN2 DCN3 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: ...Electronics 2 5 Œ 2 SCREWS ˇ JACK PCB 1 SCREW Ø MAIN PCB 4 SCREWS ˆ 2 SCREWS 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 6 Screws ˆ and lift up the Main PCB Ø ...

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

Page 14: ...Y NO CONNECTOR NO DIRECTION 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 JACK PCB DCN3 Ø CN8 MAIN PCB JACK PCB CN1 PCN1 MAIN PCB JACK PCB PCNS1 Ô CN3 JACK PCB KEY PCB KCN1 CT1 CT2 CT3 CT4 CT5 CT5 2 3 Connector Diagram Fig 2 7 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: ...d B Gear Feed A ˇ 3 Remove 2 Screws 4 Remove Shaft Pick Up ˆ and Pick Up Assy 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 SCREW 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: ...ck ZIC1 121 output Check ZIC1 125 CD VCD 16 9344MHz DVD 18 432MHz Yes Yes No No AOP4 1 7 output is normal Check AOP1 peripheral circuit Yes No Base terminal level of AQ1 AQ3 are L Check FIC1 47 mute Yes No Headphone output error AVJ2 L R output is normal HOP1 1 7 output is normal Check 3 pin Headphone jack peripheral soldering shot Check AVJ2 L R output error Check HOP2 1 7 output Yes No No Yes ...

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: ...Check the soldering of VSW1 Yes No No VIC1 13 is high state Check the connection between VIC1 13 and VR121 Yes No Yes D Y Pr Pb output error VSW1 video select switch is down position VR121 of VSW1 is low state Move the select switch to down position Check the soldering of VSW1 Yes No No VIC1 13 is high state Check the connection between VIC1 13 and VR121 Yes No Yes D ...

Page 27: ...C1 1 34 24 Yes No Pin 7 in VIC1 is in high stste Yes Check the connection netween pin 133 in ZIC1 and VIC1 Check the connection betwen VIC1 and PICS4 2 Check the connection between PICS4 2 and pin 1 in VIC1 Check the soldering of VIC1 No No Check the connection between VIC1 and output jack Pin of VDD_2 5 VDD 3 3 in Zic1 has normal level Check the connection between pin 1 in PCNS1 and pin 3 in ZIC5...

Page 28: ...4 1 4 Exploded View and Parts List 4 1 Cabinet Assembly 4 2 Deck Assembly Page 4 2 4 4 ...

Page 29: ...st 4 2 4 1 Cabinet Assembly S N A Service Not Available UT01 UT02 1 4 701 151 3 101 151 151 151 150 601 ASSY PCB MAIN 603 ASSY PCB SUB S N A ASS Y CABINET BOTTOM 610 150 13 151 CN1B DECK DVD MECHA S N A 602 ASS Y PCB JACK 2 12 12 ...

Page 30: ...AH64 00933B CABINET TOP DVD M301 XAA PCM T0 65 150 6003 000275 SCREW TAPTITE BH B M3 L10 BLK SWCH101 151 6003 000276 SCREW TAPTITE BH B M3 L10 ZPC YEL SWC 601 AK92 00001A ASSY PCB MAIN DVD P421 MAIN USA S E ASIA 602 AH92 01365D ASSY PCB JACK DVD P421 XAA JACK ASS Y U 603 AH92 01347A ASSY PCB SUB DVD P701 XAA SUB 610 AC39 10200N POWER CORD EP2 SPT 2 AWG 18 1 8MT WAFER 701 AH92 01393A ASSY PCB KEY D...

Page 31: ...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 32: ...1 2 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 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 AH31...

Page 33: ...Exploded Views and Parts List 4 6 MEMO ...

Page 34: ...1608 MR25 2007 000090 R CHIP 10KOHM 5 1 16W DA TP 1608 MR26 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR27 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR28 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR29 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR3 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR30 2007 000084 R CHIP 4 7Kohm 5 1 16W DA TP 1608 MR31 2007 000084 R CHIP 4 7Kohm 5 1 16W ...

Page 35: ...MIC CHIP 100nF 10 16V X7R TP 1608 SC16 2203 002398 C CERAMIC CHIP 22nF 10 50V X7R TP 1608 SC17 2203 001126 C CERAMIC CHIP 0 68nF 10 50V X7R TP 160 SC18 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 SC19 2203 002398 C CERAMIC CHIP 22nF 10 50V X7R TP 1608 SC2 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 SC20 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 SC21 2203 005148 C CERAMIC ...

Page 36: ... C CERAMIC CHIP 10nF 10 50V X7R TP 1608 ZC41 2203 000257 C CERAMIC CHIP 10nF 10 50V X7R TP 1608 ZC42 2203 000257 C CERAMIC CHIP 10nF 10 50V X7R TP 1608 ZC43 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 ZC44 2203 000257 C CERAMIC CHIP 10nF 10 50V X7R TP 1608 ZC45 2203 000257 C CERAMIC CHIP 10nF 10 50V X7R TP 1608 ZC46 2203 000257 C CERAMIC CHIP 10nF 10 50V X7R TP 1608 ZC47 2203 000257 C CERA...

Page 37: ...6 TR DIGITAL KSR2103 PNP 200MW 22K 22K SOT AQ5 0504 000128 TR DIGITAL NPN 200MW 22K 22K SOT 23 TP AQ51 0504 000128 TR DIGITAL NPN 200MW 22K 22K SOT 23 TP AQ52 0504 000156 TR DIGITAL KSR2103 PNP 200MW 22K 22K SOT AQ53 0504 000128 TR DIGITAL NPN 200MW 22K 22K SOT 23 TP AQ54 0504 000156 TR DIGITAL KSR2103 PNP 200MW 22K 22K SOT AQ55 0501 000002 TR SMALL SIGNAL KSA812 PNP 150MW SOT 23 AQ6 0504 000156 T...

Page 38: ...5 2001 000331 R CARBON 12KOHM 5 1 8W AA TP 1 8X3 2MM HR46 2001 000290 R CARBON 10KOHM 5 1 8W AA TP 1 8X3 2MM HR48 2001 000800 R CARBON 5 1KOHM 5 1 8W AA TP 1 8X3 2M HR49 2001 000331 R CARBON 12KOHM 5 1 8W AA TP 1 8X3 2MM HRR1 2001 000527 R CARBON 22OHM 5 1 8W AA TP 1 8X3 2MM HRR2 2001 000527 R CARBON 22OHM 5 1 8W AA TP 1 8X3 2MM HRR3 2001 000666 R CARBON 33OHM 5 1 8W AA TP 1 8X3 2MM KHR23 2007 000...

Page 39: ...R AXIAL 10uH 10 2 5x3 4mm VQ1 0504 000128 TR DIGITAL NPN 200MW 22K 22K SOT 23 TP VR11 2001 000938 R CARBON 68OHM 5 1 8W AA TP 1 8X3 2MM VR12 2001 000938 R CARBON 68OHM 5 1 8W AA TP 1 8X3 2MM VR121 2007 000572 R CHIP 220OHM 5 1 10W DA TP 2012 VR123 2007 000300 R CHIP 10KOHM 5 1 10W DA TP 2012 VR13 2001 001035 R CARBON 91OHM 5 1 8W AA TP 1 8X3 2MM VR14 2001 001035 R CARBON 91OHM 5 1 8W AA TP 1 8X3 2...

Page 40: ...53 CORE FERRITE BEAD AB 120ohm 2x1 25x0 9mm VC20 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 VC21 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 VC22 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 VC23 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 VC24 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 VC25 2203 005148 C CERAMIC CHIP 100nF 10 16V X7R TP 1608 VE2 2402 00020...

Page 41: ...5 8 Samsung Electronics Electrical Parts List MEMO ...

Page 42: ...t SIC1 S5L1454A Servo DSP RIC1 S5L1462B RF Amp DPD MIC1 TMP91C829F Main Controller FIC1 uPD780232 Front Controller ZIC1 ZiVA 4 1 A V Decoder CVBS Pr Pb Y L R Headphone Post Filter Post Filter Optical A V Decoder AC3 MPEG 2 5 1 CH AUDIO DSP CSS INPUT FIFO DEMUX AIC4 PCM1742KE 2 CH Audio DAC Down L R Compo Y Pb Pr C R Pr Comp G Y IEC958 1937 VIC1 LA73054 MIC3 1M SDRAM IC2 FLI2200 Progressive IC3 ADV...

Page 43: ...Block Diagram 6 2 Samsung Electronics MEMO ...

Page 44: ...Samsung Electronics 7 1 7 PCB Diagrams 7 2 7 3 7 4 7 4 7 1 Main 7 2 Jack 7 3 Sub 7 4 Key ...

Page 45: ...PCB Diagrams 7 2 Samsung Electronics 7 1 Main COMPONENT SIDE SOLDER SIDE ...

Page 46: ...PCB Diagrams Samsung Electronics 7 3 7 2 Jack ...

Page 47: ...PCB Diagrams 7 4 Samsung Electronics 7 3 Sub 7 4 Key COMPONENT SIDE SOLDER SIDE ...

Page 48: ...Samsung Electronics 8 1 8 Wiring Diagram SUB PCB ...

Page 49: ...Wiring Diagram 8 2 Samsung Electronics MEMO ...

Page 50: ...rams 9 2 9 3 9 4 9 5 9 6 9 7 9 8 9 9 9 10 9 1 Power 9 2 AV Decoder Main Micom 9 3 Servo 9 4 Front Micom VFD Display 9 5 Video 9 6 Audio 9 7 Sub 9 8 Headphone 9 9 Key Block Identification of PCB Main PCB Component Side Jack PCB Conductor Side ...

Page 51: ...Schematic Diagrams 9 2 Samsung Electronics 9 1 Power ...

Page 52: ...Schematic Diagrams Samsung Electronics 9 3 9 2 AV Decoder Main Micom ...

Page 53: ...Schematic Diagrams 9 4 Samsung Electronics 9 3 Servo ...

Page 54: ...Schematic Diagrams Samsung Electronics 9 5 9 4 Front Micom VFD Display ...

Page 55: ...Schematic Diagrams 9 6 Samsung Electronics 9 5 Video ...

Page 56: ...Schematic Diagrams Samsung Electronics 9 7 9 6 Audio ...

Page 57: ...Schematic Diagrams 9 8 Samsung Electronics 9 7 Sub ...

Page 58: ...Schematic Diagrams Samsung Electronics 9 9 9 8 Headphone ...

Page 59: ...Schematic Diagrams 9 10 Samsung Electronics 9 9 KEY ...

Search results

Summary of Contents for DVD-P421

Reviews:

Related manuals for DVD-P421

Brands by name

Popular brands

Samsung DVD-P421, Service Manual

Search results

Summary of Contents for DVD-P421

Reviews:

Related manuals for DVD-P421

Brands by name

Popular brands