Daewoo DSW-802N User manual

SERVICE MANUAL
DSW-802N
DSW-802N SERVICE MANUAL

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Table of Contents
General Section
Cautions/Warnings
Safe Warnings
Precautions
Software Upgrade
Circuit Diagram and Component Layout
MPEG IC Block Diagrams
Power supply Circuit Diagram and Component Layout
MPEG Circuit Diagram and Component Layout
Servicing Procedures
Power Supply Trouble Service Flow Chart
Read Disc Trouble Service Flow Chart
Video Trouble Service Flow Chart
Parts List
Power parts list
MPEG parts list
Front panel parts list
DSW-802N SERVICE MANUAL
PCB Board Parts List

1. General Section
1.1. Cautions/Warnings
1.1.1. Product Safety Notice
Parts marked with the 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 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 or located and corrected.
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DSW-802N SERVICE MANUAL

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
1.2.2. Laser 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 CLASS 1 LASER
PRODUCT.
THE LASS 1 LASER PRODUCT LABEL IS LOCATED ON THE REAR EXTERIOR.
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DSW-802N SERVICE MANUAL

DSW-802N SERVICE MANUAL

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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
Attention: 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 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.
― Press 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
DSW-802N SERVICE MANUAL

22..CCiirrccuuiitt Diagram aanndd Component LLaayyoouutt
2.1.MPEG IC BLOCK Diagrams
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DSW-802N SERVICE MANUAL

TTaabbllee::11 MMTTKK11338899LL//KK PPiinn DDeessccrriippttiioonn
Table1-Pin functions allocation
PPkkggPPiinn FFuunnccttiioonnssDDiirr
11AAII
22AAII
33AAII
44AAII
55AAII
66AAII
77ss11..88vv aannaalloogg ppeerriipphheerryy ppoowweerr ssuuppppllyy
88ss33..33vv aannaalloogg ppeerriipphheerryy ppoowweerr ssuuppppllyy
99IIDD
1100AAOO
1111SS
1122SS
1133SS
1144SS
1155SS
1166SS
1177AAOOCCDD LLAASSEERR ddiiooddee ddrriivvee oouuttppuutt
1188AAOODDVVDD LLAASSEERR ddiiooddee ddrriivvee oouuttppuutt
1199SSaannaalloogg AAFFEE 33..33VV ssuuppppllyy sshhiieelldd
2200OO
2211OO
2222OO
2233II//OO
2244OO
2255OOPPWWMM oouuttppuutt ssiiggnnaall--FFooccuuss PPWWMM
2266II
2277II//OO
2288II//OO
2299SS33..33VV aannaalloogg ppeerriipphheerryy ppoowweerr ssuuppppllyy
3300SS
3311AAII//OO
3322SS
DDeessccrriippttiioonn
RRFF RReeffeerreennccee
aannaalloogg ggrroouunndd
RRFFFF
XXTTAALLII
XXTTAALLOO
AAGGNNDD
VV2200
VV1144
RREEXXTT
2277..000000MMHHzz cclloocckk ggeenneerraattoorr oorr ccrryyssttaall iinnppuutt ffoorr tthhee ppllll
OOuuttppuutt ttoo aa ccrryyssttaall tthhaatt iiss
ccoonnnneecctteedd ttoo XXII..iiff aa ccrryyssttaall
iiss nnoott uusseedd aatt XXII..XXOO mmuusstt bbee
AADDCC iinnppuutt ssiiggnnaall
AADDCC iinnppuutt ssiiggnnaall
RReessiissttiivvee llooaadd ffoorr iinntteerrnnaall rreeffeerreennccee vvoollttaaggee
ggeenneerraattiioonn
aannaalloogg ggrroouunndd
aannaalloogg ccoorree ggrroouunndd((11..88vv aanndd 33..33vv ssuupppplliieess))
RRFF RReeffeerreennccee
AAVVDDDD1188
AAVVDDDD3333
RRFFBB
RRFFCC
RRFFDD
RRFFEE
MMDDII11
MMDDII22
LLDDOO11
LLDDOO22
AAVVDDDD3333
DDMMOOPPWWMM oouuttppuutt ssiiggnnaall--SSppiinnddllee PPWWMM
PPWWMM oouuttppuutt ssiiggnnaall--sslleedd PPWWMM
TTRRAAYY--OOPPEENN
FFMMOO
GGeenneerraall ppuurrppoossee oouuttppuutt,,mmoonniittoorreedd//ccoonnttrroolllleedd bbyy tthhee ccppuu
TTRRAAYY--CCLLOOSSEEGGeenneerraall PPuurrppoossee iinnppuutt//oouuttppuutt,,
mmoonniittoorreedd//ccoonnttrroolllleedd bbyy tthhee CCPPUU oorr DDSSPP SSWW
TTRROOPPWWMM oouuttppuutt ssiiggnnaall--ttrraacckk PPWWMM
FFOOOO
FFGG//GGPPIIOO22GGeenneerraall ppuurrppoossee iinnppuutt//oouutt ppuudd,,mmoonniittoorreedd//ccoonnttrroolllleedd bbyy tthhee
CCPPUU oorr DDSSPP SSWW
UUSSBB__DDPPNN//AA GGeenneerraall ppuurrppoossee oouuttppuutt,,ccoonnttrroolllleedd bbyy tthhee ccppuu
UUSSBB__DDMMNN//AA GGeenneerraall ppuurrppoossee oouuttppuutt,,ccoonnttrroolllleedd bbyy tthhee ccppuu
UUSSBB__VV3333
DDggiittaall ccoorree ggrroouunndd
PPAADD__VVRRTT
UUSSBB__GGNNDD
CCaappaacciittiivvee llooaadd ffoorr iinntteerrnnaall bbaanndd--ggaapp vvoollttaaggee ggeenneerraattiioonn
UUSSBB__VV118811..88vv aannaalloogg ppeerriipphheerryy ppoowweerr ssuuppppllyy
LLeefftt wwaallll
AADDCC iinnppuutt ssiiggnnaall
AADDCC iinnppuutt ssiiggnnaall
AADDCC iinnppuutt ssiiggnnaall
AADDCC iinnppuutt ssiiggnnaallRRFFAA
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DSW-802N SERVICE MANUAL

DSW-802N SERVICE MANUAL

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DSW-802N SERVICE MANUAL

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DSW-802N SERVICE MANUAL

22..22..MMPPEEGG cciirrccuuiitt DDiiaaggrraamm aanndd ccoommppoonneenntt llaayyoouutt
FFiigg22--33 MMTT11338899LL//KK
FFiigg 22--22 IInnddeexx&&PPoowweerr
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DSW-802N SERVICE MANUAL

FFiigg22--55 SSDDRRAAMM&&FFLLAASSHH
FFiigg22--44 MMOOTTOORR DDRRVV
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DSW-802N SERVICE MANUAL

FFiigg22--66 AAUUDDIIOO OOUUTT
FFiigg22--77 VVIIDDEEOO OOUUTT
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DSW-802N SERVICE MANUAL

FFiigg22--88 PPoowweerr SSuuppppllyy CCiirrccuuiitt DDiiaaggrraamm
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DSW-802N SERVICE MANUAL

33..SSeerrvviicciinngg pprroocceedduurreess
33..11.. ppoowweerr ssuuppppllyy ttrroouubbllee sseerrvviiccee FFllooww CChhaarrtt
Power Supply
Block Trouble
Check F101 Condition Replace
F101
Check ZD1-ZD4
Output Voltage
Condition
Replace Q1
Check on Q1
pin(e)Voltage
Condition 2-5v
Replace IC1 Replace IC2
Ch+5v +12v
Output voltage
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DSW-802N SERVICE MANUAL

33..22 RReeaadd DDiisscc TTrroouubbllee SSeerrvviiccee FFllooww CChhaarrtt
NNGG
NG
OK
Read DISC Trouble
Check DVD LOADER Connector
Condition Replace
Connector
Replace DVD Loading Unit
Check the other Parts by
Replacement Method
Check the MPEG ATAPI I/F
Interface Circuit
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DSW-802N SERVICE MANUAL

OK
NNGG
OK
33..33.. VViiddeeoo TTrroouubbllee SSeerrvviiccee FFllooww CChhaarrtt
33..33..11..CCoommppoossiittee VViiddeeoo TTrroouubbllee sseerrvviiccee FFllooww CChhaarrtt
NNGG
NNGG
OOKK
Composite Video
Trouble
Check"SETUP"Item
See "User Manual"
Check Y200" Output Signal Replace Y200
Check L602 Signal
Check CN402 Pin7 Signal
Replace
Replace CN402 connection
Check External Set
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Parts
L602
DSW-802N SERVICE MANUAL

NNGG
OOKK
OOKK
33..33..22 SSCCAARRTT VViiddeeoo TTrroouubbllee SSeerrvviiccee FFllooww CChhaarrtt
NNGG
NNGG
NNGG
NNGG
Composite SCART Video Trouble
Check"SETUP" Item See“User
Check Y200 Output Signal Replace
Y200
Check Q409 pin1 Signal
Check J400
Cable
Check External Set
Replace
Q409
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manual”
DSW-802N SERVICE MANUAL

OK
OK
NNGG
OK
NNGG
OK
NNGG
33..33..33..SS__VViiddeeoo TTrroouubbllee SSeerrvviiccee FFllooww CChhaarrtt
NNGG
Composite S-Video Trouble
Check
"SETUP"Item See "User
"
Check Y200 Output Signal Replace
Y200 Parts
Check L600/L601 Signal
Check P600 Pin Signal
Replace
L600/601
Check External Set
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manual
DSW-802N SERVICE MANUAL