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Daewoo DM-K40 Service Manual

Page

30

3.3. Video Trouble Service Flow Chart

3.3.1. Composite Video Trouble Service Flow Chart

Composite

Video

Trouble

NG

Check

“SETUP”

Item

See

“User

Manual”

OK

NG

Check

Y1

Output

Signal Replace

Y1

Parts

OK

NG

Check

C128/R106

Signal

Replace

C128/U1/R106

OK

NG

Check

C130

Signal

Replace

C130/L9

OK

OK

Check CN8 Pin Signal

Check External Set

NG

Replace CN8

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Summary of Contents for DM-K40

Page 1: ...S M No OSDMK40001 Dec 2004 Caution In this Manual some parts can be changed for improving their performance without notice in the parts list Model DM K40 ...

Page 2: ...uit Diagram and Component Layout Front panel Circuit Diagram and Component Layout Servicing Procedures 28 Power Supply Trouble Service Flow Chart Read Disc Trouble Service Flow Chart Video Trouble Service Flow Chart Composite Analogy Audio Trouble Service Flow Chart Digital Audio Trouble Service Flow Chart Front Control Trouble Service Flow Chart Remote Control Trouble Service Flow Chart Parts Lis...

Page 3: ...2 Leakage Current Check Resistance Check Before returning 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 DO NOT return the unit to the customer until the problem ...

Page 4: ...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 in these parts 1 3 1 2 When soldering the microprocessor and signal processing IC s use a ceramic soldering iron or a soldering iron whose metal part is grounded since they are not...

Page 5: ...ort circuit the laser diode shorting lands beforehand 1 4 Software Upgrade You can upgrade DVD Player using 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 Attenti...

Page 6: ...Daewoo DM K40 Service Manual Page 5 2 Circuit Diagram and Component Layout 2 1 MPEG IC Block Diagrams Fig 2 1 ZR36768 762 ...

Page 7: ...Daewoo DM K40 Service Manual Page 6 Fig 2 2 DRC block diagram Fig 2 3 CSTP block diagram ...

Page 8: ...Daewoo DM K40 Service Manual Page 7 Fig 2 4 Vaddis ZR36768 762 block diagram ...

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Page 21: ...Daewoo DM K40 Service Manual Page 20 2 2 Power supply Circuit Diagram and Component Layout Fig 2 5 Power Supply Circuit Diagram ...

Page 22: ...Daewoo DM K40 Service Manual Page 21 Fig 2 6 Power Supply Assembly Drawing Fig 2 7 Power Supply Composite ...

Page 23: ...Daewoo DM K40 Service Manual Page 22 2 3 MPEG Circuit Diagram and Component Layout 2 3 1 MPEG Circuit Diagram Fig 2 8 ZR36762 ZR36768 SDRAM Fig2 9 RF AMPLIFIER DRIVER ...

Page 24: ...Daewoo DM K40 Service Manual Page 23 Fig 2 10 AUDIO VIDEO FILTER Fig 2 11 MEMORY ...

Page 25: ...Daewoo DM K40 Service Manual Page 24 Fig 2 12 POWER AV PORT ...

Page 26: ...Daewoo DM K40 Service Manual Page 25 2 3 2 MPEG Assembly Drawing Fig 2 13 ...

Page 27: ...Daewoo DM K40 Service Manual Page 26 2 3 3 MPEG Composite Fig 2 14 ...

Page 28: ...Daewoo DM K40 Service Manual Page 27 2 4 Front panel Circuit Diagram and Component Layout Fig 2 16 Front Panel Circuit Diagram Fig 2 17 Front Panel Assembly Drawing Fig 2 18 Front Panel Composite ...

Page 29: ...ower Supply Block Trouble NG Check F901 Condition Replace F901 OK Check F901 NG Pin4 Pin6 Pin8 Replace F901 Condition OK Check on D101 D102 D103 D104 D105 Output Voltage Condition NG Check on Q103 Pin1 NG Replace Q103 Voltage Condition 2 5V NG NG Replace U302 Replace TR901 OK OK Check CON1 4 Output Voltage ...

Page 30: ...placing the complete DVD loading unit instead of repairing the DVD loading unit in local workshop It is suggested 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...

Page 31: ... Video Trouble Service Flow Chart Composite Video Trouble NG Check SETUP Item See User Manual OK NG Check Y1 Output Signal Replace Y1 Parts OK NG Check C128 R106 Signal Replace C128 U1 R106 OK NG Check C130 Signal Replace C130 L9 OK OK Check CN8 Pin Signal Check External Set NG Replace CN8 ...

Page 32: ...mposite Video Trouble NG Check SETUP Item See User Manual OK NG Check Y1 Output Signal Replace Y1 Parts OK NG Check C122 C125 Signal Replace C122 C125 or U1 OK NG Replace C124 L7 R104 Check C124 C127 Signal or C127 L8 R105 OK NG Check CN17 Signal Check External Set OK Replace CN17 ...

Page 33: ...R8 Signal Replace U1 OK NG Check U10 Pin1 3 Signal Replace U1 OK NG Check U10 Pin7 5V Check Power Supply OK NG Check U10 Pin5 8 Signal Replace U10 OK NG Check U11 between Check U11 Pin2 6 Signal Pin2 6 and Pin3 5 Parts OK NG Check U11 Pin4 8 12V Check Power Supply OK NG Check U11 Pin1 7 Signal Replace U11 OK Check Q15 Q16 Mute Parts ...

Page 34: ...ow Chart Digital Audio Trouble NG Check SETUP Item See User Manual OK NG Check U5 Pin9 Signal Replace U1 OK NG Check U5 Pin8 Signal ReplaceU5 OK NG CheckR130 Signal Check External Set OK NG Check C147 Replace C147 OK NG Check R132 Replace R132 R133 C148 OK Check External Set ...

Page 35: ...ce Flow Chart Front Control Trouble NG Check between CN1 and CN903 Connection OK Replace Check between CN2 and CON2 Connection NG OK NG Check U2 Pin14 27 38Voltage See 3 1 Check U2 OK OK Replace VFD SEG Signal NG OK Check U1 Pin1 2 34 35 Voltage Replace U2 NG Replace U1 ...

Page 36: ...ouble Service Flow Chart Remote Control Trouble NG NG Check Remote Control Replace Battery Replace Control OK NG Check U3 Pin2 Voltage Check Power Supply OK NG Check U3 Pin3 Output Signal Replace U3 OK NG Check U1 Pin201 Input Signal Replace L23 OK Replace U1 ...

Page 37: ...22 CT7 400VAC 102M 3 C903 C904 C909 18 M2C1104F84000022 CT81 50V 104 Z 5 C107 C113 C114 C117 C120 19 M2C1151M84000022 CT81 1000V 151 Z 1 C910 20 M2C1103L84000022 CT81 500V 103 Z 2 C908 C121 21 M2C1472M89000022 CT81 1000V 472 Z 1 C906 Electrolytic Capacitor 22 M2C2476K59163222 CD293 47U 400V M 105 1 C905 23 M2C2107T59061222 CD288 35V 100U M 2 C101 C102 24 M2C2107B59051122 CD288 16V 100U M 5 C103 C1...

Page 38: ...2I0NCP1200P6000 NCP1200P60 1 U901 45 M2U110T0A5250V00 T0 5A 250V 1 F901 46 M2P3300000520000 5 20 2 F901 Transformer 46 M2T11EEL193883B0 EEL19 3883B 1 TR901 Jack 47 M2P2200000VH3000 VH 3 1 CN901 48 M2P220000VH3B000 VH 3 B 1 CN902 49 M2P000000PH5A000 PH 5A 1 CN903 50 M2P0000TJC35A000 TJC3 5A 1 CN904 51 J 10mm 4 JP1 JP3 JP4 52 J 5mm 1 JP6 53 M2A00GDP31400001 GDP 314 2 GDP1 GDP2 PCB 54 M2B000HY31509C2...

Page 39: ... M2R0012131000000 RC 03K121JT 1 R137 15 M2R0015131000000 RC 03K151JT 1 R19 16 M2R0022131000000 RC 03K221JT 7 R27 R28 R51 R52 R53 R56 R132 17 M2R0039131000000 RC 03K391JT 1 R20 18 M2R0047131000000 RC 03K471JT 3 R78 R79 R131 19 M2R0056131000000 RC 03K561JT 2 R110 R117 20 M2R0010231000000 RC 03K102JT 6 R133 R139 R141 R142 R104 R106 21 M2R0013231000000 RC 03K132JT 3 R38 R39 R40 22 M2R0033231000000 RC ...

Page 40: ...0300 CC 0603CG161JN500T 4 C121 C124 C127 C130 47 M2C0221F30060300 CC 0603CG221JN500T 1 C60 48 M2C0471F30060300 CC 0603CG471JN500T 1 C73 49 M2C0561F30060300 CC 0603CG561JN500T 3 C71 C84 C93 50 M2C0102F44060300 CC 0603B102K500NT 16 C4 C74 C75 C76 C77 C78 C79 C80 C83 C108 C109 C100 C133 C137 C138 C142 51 M2C0222F44060300 CC 0603B222K500NT 4 C41 C42 C43 C44 52 M2C0272F44060300 CC 0603B272K500NT 1 C63 ...

Page 41: ...24 L25 L26 FB1 L2 FB3 FB4 L20 FB2 Color loop Inductor 69 M2H4LGA1UH1J0307 LGA0307 1 1UH K 4 L6 L7 L8 L9 Ferrite Bead 70 M2H1RH3560083560 RH3 5 6 0 8 2 L12 L15 Diode 71 M2D1IN4148110000 1N4148 DO 35 5 D1 D2 D3 D4 D5 72 M2D1IN4007220000 1N4007 DO 41A 4 D15 D16 D10 D11 74 M2D1BZX5V1220000 BZX 5V1 1 2W DO 35 1 Z1 75 M2D1BZX6V8220000 BZX 6V8 1 2W DO 35 10 Z2 Z3 Z4 Z5 Z6 Z7 Z8 Z9 Z10 Z11 Transistor 76 M...

Page 42: ...1 U10 88 M2IAZ1117H330000 AZ1117H 3 3V SOT 223 1 U13 89 M2IAZ11170000000 AZ1117H ADJ SOT 223 1 U14 90 M2I000D595400000 D5954 HSOP28 1 U7 91 M2IAZ4558AM00000 AZ4558AM SO8 1 U11 92 M2I00078L0500100 78L05 TO 92 1 U9 94 M2I0L7805CV00100 L7805CV 1 U12 95 M2I074HC14D00000 74HC14D SO14 1 U5 96 M2I0GP1F32T00100 GP1F553TZ 554TZ 1 CN6 97 M2I0MC3407200000 MC34072 SO8 1 U18 M2IPT44720000000 PT4472 1 U18 Jack ...

Page 43: ...4000022 CC1 50V 101 K 3 C3 C4 C5 6 M2C1104F84000022 CT81 50V 104 Z 2 C2 C6 Diode 7 M2D11N4148110000 1N4148 2 D1 D2 8 M2D100374N220000 LT0374N 43 M1 1 D3 IC 9 M2I00PT6312B0000 PT6312B QFP44 1 U2 VFD M2G11NHV06SS9100 06SS91 1 U1 M2G00FH811806350 81 18 0635 1 U1 11 JP 5MM 4 J1 J4 J5 J10 12 JP 7 5MM 7 J2 J3 J6 J7 J8 J9 J15 IR 13 M2IAT13812B00000 AT138BST 12M2 1 U3 Jiggle Switch 14 M2S00KAO06060501 KAO...

Page 44: ...686 AHYE ON DONG MAPO GU S E OUL KOR E A C P O BOX 8003 S E OUL KOR E A PRINTED DATE DEC 2004 DAE WOO E LE CTR ONICS COR P ...

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