Daewoo-DNW552-dvd-sm维修电路原理图.pdf

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1、Daewoo DN-W551 Service Manual 1 Daewoo DN-W552 Service manual Table of Contents page General Section . 2 Cautions/Warnings Safe Warnings Precautions Software Upgrade Circuit Diagram and Component Layout 5 MPEG IC Block Diagrams Power supply Circuit Diagram and Component Layout MPEG Circuit Diagram a

2、nd Component Layout Front panel Circuit Diagram and Component Layout Servicing Procedures . 22 Power Supply Trouble Service Flow Chart Read Disc Trouble Service Flow Chart Video Trouble Service Flow Chart Digital Audio Trouble Service Flow Chart Composite Analogy Audio Trouble Service Flow Chart Fro

3、nt Control Trouble Service Flow Chart Remote Control Trouble Service Flow Chart Parts List . 30 Power parts list Front panel parts list MEPG parts list RadioFans.CN 收音机爱 好者资料库Daewoo DN-W551 Service Manual 2 1. General Section 1.1. Cautions/Warnings 1.1.1. Product Safety Notice Parts marked with the

4、symbol in the schematic diagram have critical characteristics. Use ONLY replacement pares recommended by the manufacturer. It is recommended that the unit be operated from a suitable DC supply or batteries during initial check out procedures. 1.1.2. Leakage Current Check/Resistance Check Before retu

5、rning the unit to the customer, make sure you make either (1) a leakage current check or (2) a line to insulated resistance check. If the leakage current exceeds 0.5 milliamps, or if the resistance from chassis to either side of the power cord is less than 240 K ohms, the unit is defective. WARNING:

6、 DO NOT return the unit to the customer until the problem or located and corrected. 1.2. Safe Warnings 1.2.1. Protection of Eyes from Laser Beam To protect eyes from invisible laser beam during servicing DO NOT LOOK AT THE LASER BEAM RadioFans.CN 收音机爱 好者资料库Daewoo DN-W551 Service Manual 3 1.2.2. Lase

7、r Caution CAUTION Adjusting the knobs, switches, and controls, etc. or taking actions not specified herein may result in a harmful emission of laser beams. This CD Changer must be adjusted and repaired only by qualified service personnel. Laser symbol: THIS IS COMPACT DISC PLAYER IS CLASSIFIED AS A

8、CLASS 1 LASER PRODUCT. THE LASS 1 LASER PRODUCT LABEL IS LOCATED ON THE REAR EXTERIOR. 1.3. Precautions 1.3.1. ESD Precautions in Repairing 1.3.1.1. Do not apply excessive pressure on the mechanical parts (moving pares), including the Pickup Block, as extremely high mechanical precision or required

9、in these parts. 1.3.1.2. When soldering the microprocessor and signal processing ICs, use a ceramic soldering iron or a soldering iron whose metal part is grounded since they are not resistant to static electricity. 1.3.1.3. When removing the solder or soldering the laser shorting lands for the Pick

10、up Block, use a ceramic soldering iron or a soldering iron whose metal part is grounded since the laser diode or not resistant to static electricity. 1.3.2. DVD Loading Unit Precautions when handling the Mechanism Block 1.3.2.1. Do not loosen any screws in the Pickup Block. 1.3.2.2. Do not adjust an

11、y screws in the Mechanism Block except for “Tilt Daewoo DN-W551 Service Manual 4 Adjust Screws”, as they are adjusted precisely at the factory. 1.3.2.3. Replacement of the Pickup Block is impossible. Always replace the Traverse Assy when the Pickup Block needed to be replaced. Do not touch the lens

12、or lens holder of the Pickup Block. 1.3.2.4. The Guide Rails of the Pickup Block are greased. Take care when handing. 1.3.2.5. When you try to slide the Pickup Block, do not press or pull it directly. Always turn the dive gears with your fingers. 1.3.2.6. Be sure that the anti-slipping rubber on the

13、 turntable or clean. If there is dust or it is greasy, clean the part with the liquid that contains 50% each of alcohol and water. 1.3.2.7. When removing the Mechanism P.C.B. Assy, you need to short-circuit the laser diode shorting lands beforehand. 1.4. Software Upgrade You can upgrade DVD Player u

14、sing the software we provide as following step: Creating a software upgrade CD Use only a new CD-R/CD-RW(not an erased one). Give the CD a name of your choice(e.g. version and unit name). Burn the unpacked documents on the CD-R/CD-RW. The root directory(uppermost level) of the software upgrade CD At

15、tention: If a failure should occur during the software upgrade (e.g. a mains failure), it may happen that the units function and a restart of the upgrade function are no longer possible. If this should be the case, you must replace the intergraded FLASH ICs with preprogrammed ICs (see corresponding

16、spare parts list). Insert the upgrade CD (see corresponding spare parts list) and observe the hints on the display and on the screen of the TV set. Carry out an initialization of the set. Displaying the Software Version Number Press one after the other the “STOP” and “EJECT” buttons on the unit. Pre

17、ss the“OSD” with the remote control. Using the cursor buttons on the remote control, select the software version “MICRO Version” or “CUSTOMER VERSION” .The respective software version number then is displayed Daewoo DN-W551 Service Manual 5 2. Circuit Diagram and Component Layout 2.1. MPEG IC Block

18、Diagrams Fig.2-1 Vaddis MTK1389QE/D Daewoo DN-W551 Service Manual 6 Fig.2-2 Vaddis MTK1389QE/D block diagram Daewoo DN-W551 Service Manual 7 Table1. Vaddis MTK1389QE/D Pins operational function description Daewoo DN-W551 Service Manual 8 Daewoo DN-W551 Service Manual 9 Daewoo DN-W551 Service Manual

19、10 Daewoo DN-W551 Service Manual 11 Daewoo DN-W551 Service Manual 12 Daewoo DN-W551 Service Manual 13 Daewoo DN-W551 Service Manual 14 Daewoo DN-W551 Service Manual 15 2.2.1Power supply Circuit Diagram and Component Layout (Infinoen) Fig 2-1 Power Supply Circuit Diagram Daewoo DN-W551 Service Manual

20、 16 Fig2-2 Power Supply Assembly Drawing Fig 2-3 Power Supply Composite Daewoo DN-W551 Service Manual 17 2.3.MPEG Circuit Diagram and Component Layout 2.3.1MPEG Circuit Diagram Fig 2-4 MTK1389QE/D&SDRAM Fig 2-5RF AMPLIFIER&DRIVER Daewoo DN-W551 Service Manual 18 Fig 2-6 AUDIO&VIDEO FILTER Daewoo DN-

21、W551 Service Manual 19 Fig 2-7 MEMORY Fig2-8 POWER PORT Daewoo DN-W551 Service Manual 20 2.3.2.MPEG Assembly Drawing(Fig 2-99) 2.3.3.MPEG Composite (Fig 2-10) Daewoo DN-W551 Service Manual 21 2.4. Front panel Circuit Diagram and Component Layout Fig 2-11 Front Panel Circuit Diagram Fig 2-12 Front Pa

22、nel Assembly Drawing Fig 2-13 Front Panel Composite Daewoo DN-W551 Service Manual 22 Replace DA1/DA2/DA3/DA4DA5/DA6/DB2/DB3/DB4/DB7/DB8 3. Servicing Procedures 3.1. 1 Power Supply Trouble Service Flow Chart（Infineon） Power Supply Block Trouble NG Check F1 Condition Replace F1 OK Check on DA1/DA2/DA3

23、/DA4 NG DA5/DA6/DB2/DB3/DB4/DB7/ DB8 Output Voltage Condition OK NG Check on U3 Replace U3 Voltage Condition Pin1(2.4V)/ Pin2(0V)/ Pin3 (2.6V) NG NG Check on U2 Replace U2 NG NG Check on U1 Replace U1 Check C104 Output Voltage Daewoo DN-W551 Service Manual 23 3.2. Read Disc Trouble Service Flow Char

24、t Read disc problem in a DVD player is a very complicated issue that may involve complex issues. This problem is not only relation to the electronic circuit, but also very much relation to the operation environment. DVD loading unit is a very complicate part that contains big number of ESD component

25、s, which require specific equipment, tools and technique to repair; in general, service technician is not suggested to disassemble the DVD loading unit. It is suggest proving the trouble and replacing the complete DVD loading unit, instead of repairing the DVD loading unit in local workshop. It is s

26、uggested to prove the faulty of a DVD loading unit by replacement by a good DVD loading unit. Before checking the NO Disc Trouble, ensure excluding the following possibilities: The test disc is damage. AC power supply voltage dropped below the minimum required level. DVD disc region code and color s

27、ystem is not matching to the DVD player or system setting. Moisture condensed inside the unit. (Power on the unit, without disc loaded, for 1/2 to 2 hours). Service Flow Chart Read DISC Trouble Check DVD LOADER NG Replace Connector Connector Condition OK Replace DVD Loading Unit NG Check the MEPG AT

28、API Check the other Parts by I/F Interface Circuit Replacement Method Daewoo DN-W551 Service Manual 24 3.3. Video Trouble Service Flow Chart 3.3.1. Composite Video Trouble Service Flow Chart Composite Video Trouble NG Check Composite Video Replace Composite Video Parts Output Signal OK NG Check “SET

29、UP” Item See “User Manual” OK NG Check CP3 Signal Replace CP3 OK NG Check R107 D12 D14 Replace R107 D12 D14 Q16 L36 Signal Q16 L36 OK Check U2 (Pin175) Signal NG Replace U2 Daewoo DN-W551 Service Manual 25 3.3.2. S-Video Trouble Service Flow Chart S-Video Trouble NG Check S-Video Output Signal Repla

30、ce S-Video Parts OK NG Check “SETUP” Item See “User Manual” OK NG Check CP1 Signal Replace CP1 OK NG Check R85/R80 Signal Replace R85/80 OK NG Check Q38 Q39 Signal Replace Q38 Q39 OK Check U2 ( Pin181/182) signal NG Replace U2 Daewoo DN-W551 Service Manual 26 3.4. Digital Audio Trouble Service Flow

31、Chart Digital Audio Trouble NG Check “SETUP” Item See “User Manual” OK NG Check Optical/Coaxial Out Signal Replace Optical/Coaxial OK NG Check CP3/CP4 Signal Replace CP3/CP4 OK NG Check R113/R114/R117 Replace R113/R114/R117/C155 C155 Signal OK NG Check U2 ReplaceU2 Daewoo DN-W551 Service Manual 27 3

32、.5 Composite Analogy Audio Trouble Service Flow Chart Composite Analogy Audio Trouble NG Check CP3 Signal Replace CP3 OK NG Check Q18/Q19/Q20/Q21 Replace Q18/Q19/Q20/Q21 /Q25/Q26 /Q25/Q26 OK Check U11/U13/U14 Pin4(-12V), NG Replace U11/U13/U14 Pin8(+12V) OK NG Check U16(Pin19/20/23/24) Replace U16 2

33、6/27) OK Check U2(Pin 163/164/165) NG Replace U2 Daewoo DN-W551 Service Manual 28 3.6. Front Control Trouble Service Flow Chart Front Control Trouble NG Check between CN1 Connection Replace CN1 OK NG Check U1 pin7 Vol 5V Check EC1 C1 OK OK NG Check LED Array Replace U1 Replace EC1 C1 Replace LED Arr

34、ay Daewoo DN-W551 Service Manual 29 3.7. Remote Control Trouble Service Flow Chart Remote Control Trouble NG NG Check Remote Control Replace Battery Replace Control OK NG Check IR (Pin1 )Voltage Check Power Supply OK Check IR (Pin3) Output Signal NG Replace IR Daewoo DN-W551 Service Manual 30 4. Par

35、ts List 4.1. 1Power parts list（Infinoen） NO. PART NO. DESCRIPTION QTY LOCATION Carbon Resistor 1 20-200132-03100 1/6W 1K5% 1 RB9 2 20-204712-03100 1/6W 4705% 1 RB8 3 20-243032-04100 1/4W 430K5% 2 RA2,RA3 4 20-201502-04100 1/4W 155% 2 RA4,RA5 5 20-251012-03100 1/6W 5.1K5% 2 RB11,RB12 6 20-200102-0610

36、0 1W 15% 1 RA6 7 20-206832-06100 1W 68K5% 1 RA1 Porcelain Capacitor 8 32-302233-05100 223 50V 10% 1 CA8 9 32-322014-17100 1KV 2200PF10% Y5P 1 CA4 10 32-301044-05101 104 50V 20% D7,F5 2 CB12,CA9 Electrolytic Capacitor 11 30-422034-01110 10V 220UF20% 1 CB6 12 30-422034-03110 25V 220UF20% D8 1 CB9 13 3

37、0-404734-03100 25V 47UF20% D6 3 CB4,CB10,CA5 14 30-410034-02100 16V 100UF20% D612 1 CB7 15 30-400164-01110 10V 1000U P3.5 20% 8*12MM 2 CB5,CB8 16 30-402234-14100 400V 22UF20% D1622 1 CA3 17 30-410034-03100 25V 100UF20% D8 1 CB3 18 30-400134-05100 50V 1UF20% D5 1 CA6 High Voltage Capacitor 19 33-3100

38、04-12100 275V 0.1UF20% X2 2 CA1,CA10 20 33-347003-25100 400VAC 470PF 10% Y1 3 CY1,CY2,CY3 Diode 21 11-1N4007-26000 IN4007 4 DA1DA4 22 11-0RL201-26000 RL201 2A 50V 2 DB7,DB8 23 11-00DO35-25000 12V 1/2W DO-35 1 ZDA3 24 11-00DO35-25001 18V 1/2W D0-35 1 ZDA1 Daewoo DN-W551 Service Manual 31 25 11-1N5822

39、-29000 1N5822 1 DB3 26 11-0FR105-29000 FR105 1A 600V 4 DB4,DA5,DA6,DB2 IC 27 10-0TL431-2TF00 TL431 TO-92 1 U3 28 10-FOD817-3FA00 COSMO 1010 817 UL VDE 1 U1 29 10-2A0565-3IC00 ICE2A0565 1 U2 Fixed Inductance 30 41-130103-13201 10uH/34A 10% 2 LB1,LB2 Transformer 31 42-022112-02000 PINF001-L EEL19 1 T1

40、 32 42-032014-01000 UT-20 25mH 1 LA1 Fuse Tube 33 52-001311-11200 1A 250V 20*5MM (UL) 1 F1 Jack 34 48-111031-20100 3.96*3P 1 CN1 Jumper 35 51-110009-10800 L=5.8MM =0.5MM 3 JP2,JP3,CN2 36 51-110014-10800 L=14MM =0.5MM 3 JP1,RB5,DB6 PCB 37 46-0W552H-12400 PINF001 REV:B1.3 1 Bead 38 41-530000-50100 RH3

41、.5*4.7*0.8 1 LA2 Daewoo DN-W551 Service Manual 32 4.2. Front panel parts list NO. PART NO. DESCRIPTION QTY LOCATION Carbon Resistor 1 20-200132-03100 1/6W 1K4% 1 R1 2 20-201012-03100 1/6W 1005% 4 R3,R4,R5,R8 3 20-201032-03100 1/6W 10K5% 1 R2 4 20-205132-03100 1/6W 51K5% 1 R7 Electrolytic Capacitor 5

42、 30-410034-02110 16V 100UF 20% D6*12 2 C2 EC1 Porcelain Capacitor 6 32-301013-05100 101 50V 10% 3 C6 C4 C5 7 32-301045-05100 104 50V -20/+80% F5 D6 1 C1 Diode 8 11-02SD10-21100 Round3 red 1 D1 Receiver 9 44-001838-22100 5V BTM-1838 1 IR Jumper 10 51-110005-10800 L=5MM =0.5MM 2 JMP2,JMP4 11 51-110007

43、-10801 L=7.5MM =0.5MM 1 JMP1 12 51-110009-10800 L=8.5MM =0.5MM 1 JMP3 Jiggle Switch 13 55-002202-22000 6*6*6MM (250g) 6 SW2 SW6 14 55-002204-21000 6*6*5 （250gf） 1 SW7 IC 15 10-SC6928-3SU00 SC6928B 1 U1 LED 16 57-MR6659-56608 MR-6659 1 U2 PCB 17 46-00W551-13400 CGVG046 REV:B1.3（DG-3000） 1 Connecter 1

44、8 49-106056-20701 6P*560mm 1 CON1 Magnetic ring Daewoo DN-W551 Service Manual 33 19 54-221464-30000 OUT Diameter:22.5mm/INNER Diameter:13.8mm/Height:6.4mm 1 4.3 Mpeg parts list（MTK1389QE/D） NO. PART NO. DESCRIPTION QTY LOCATION Chip Capacitor 1 13410225140 22P 50V 10% 0603 1 C232 2 13412213140 220P

45、50V 10% 0603 4 C172 ,C180,C189,C197 3 13411023140 1000P 50V 10% 0603 10 C175,C183,C195,C200,C37,C207,C208,C39,C162,C169 4 13413323140 3300P 50V 10% 0603 4 C176,C184,C196,C201 5 13410275140 27P 50V5% 0603 1 C156 6 13411013140 101 50V10% 0603 5 C67,C209,C230,C157,C166 7 13411533140 153 50V10% 0603 1 C

46、90 8 13413333140 333 50V10% 0603 1 C45 9 13411033141 103 50V10% 0603 1 C26 10 13411057140 1U 10V+80%-20% 0603 5 C59,C60,C61,C63,C64 11 13414737140 473 50V+80%-20% 0603 2 C47,C46 12 13412223140 222 50V10% 0603 3 C21,C27,C36, 13 13411523140 152 50V10% 0603 1 C34 14 13413913140 391 50V10% 0603 1 C20 15

47、 13410205140 20P 50V5% 0603 5 C31,C163,C170,C234,C236 16 13413313140 331 50V10% 0603 2 C88,C87 17 13410335140 33P 50V5% 0603 4 C51,C50 18 13416823140 682 50V10% 0603 1 C42 19 13410475140 47P 50V5% 0603 12 C133,C134,C141,C142,C149,C150,C242,C243, C248,C249,C139,C140 20 13411047140 0.1U 50V +80%-20% 0

48、603 82 C1,C5,C6,C7,C9,C12,C14,C18,C24,C25,C28,C30,C38, C158,C41,C44,C48,C49,C55,C56,C57,C58,C62,C68,C69,C71,C73,C164,C76,C77,C78,C79,C80,C81,C82,C83,C84,C85,C86,CDaewoo DN-W551 Service Manual 34 89,C91,C92,C93,C95,C96,C98,C105,C106,C107,C108,C109,C110,C111,C112,C114,C115,C116,C117,C118,C119,C121,C12

49、3,C124,C125,C126,C144,C153,C155,C16,C171,C179,C204,C178,C194,C202,C186,C187,C188,C192,C193,C210,C211 Chip Resistor 21 11310005010 1/16W 05% 0603 28 R4,R7,R15,R16,R24,R25,R26,R37,R50,R53,C129, C132,R49,R33,R34,R32,R88,R99, R110 R60 R248 ,R206,R207,R208,R225,R227,R68,R67, 22 11310105010 1/16W 105% 060

50、3 5 R27,R190 R119 R117,R127 23 11310335010 1/16W 335% 0603 10 R71,R72,R73,R74 R151 R150 R149 R144 R143 R142 24 11310755010 1/16W 755% 0603 4 R114,R182,R189,R95, 25 11311015010 1/16W 1005% 0603 1 R113 26 11311115010 1/16W 1105% 0603 1 R115 27 11311615010 1/16W 1605% 0603 14 R82,R89,R92,R100,R102,R104