Daewoo DP-42SM User manual

(FOR NEC MODULE)

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CONTENTS
1. COMMENTS
2. SAFETYPRECAUTION
3. PRODUCT SPECIFICATION
4.BLOCKDIAGRAM
5. AV BLOCK DESCRIPTION
6. LVDS SPECIFICATIONS
7. SERVICE MODE (VIDEO PCB INITIAL DATA)
8. SOFTWARE UPGRADE METHOD
9. POWER ADJUSTMENTS
10.ASSEMBLY LIST
11.PDP MODULE CHECK POINT
11-1. Flow Chart
11-2. Serial Number
11-3. Panel Crack
11-4. Flexible Cable
11-5. Connectors
11-6. Tester Checking
11-7. Strip Defect
11-8. Vertical Line
11-9. Horizontal Line
12. EXPLODED VIEW

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1. COMMENTS
This paper is the additional service manual for the
DP-42SM/WM/GM using the NEC panel.
Other service contents with the exception of this
manual are same as the existing service manual
(DP-42SM/WM/GM). The existing service manual
was made for ORION panel.

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2. Safety Precautions
(1) When moving orlaying down aPDP Set,atleasttwo people mustbeworking.
Avoid any impacttowards the PDP Set.
(2)Donot leavethebrokenPDPSetonfor a longtime.Toprevent any further
damages,after checkthebrokenSet'scondition, makesuretoturnthe power
(AC)off.
(3) When opening the BACKCOVER,turn off the power(AC)topreventelectric
shock.When aPDP is on,highvoltage and highcurrentexistinside theSet.
(4) When loosening screws,check the connecting position and type of the
screw. Sort out thescrewsandstorethemseparately. Because screwsholding
PCBareworkingaselectric circuit GROUNDING, makesuretocheck if any
screw ismissing when assembling.
(5) Ifyouopenthe BACKCOVER,you will see a Panel GasExhaustTube.Ifthis
part isdamaged, entirePDPPANEL must bereplaced. Therefore,when working,
be carefulnotto damage this part.
(6)A PDP Set contains different kindof connectorcables. Whenconnectingor
disconnecting connectorcables,check the direction and positionofthecable
beforehand.
(7) When disconnecting connectors,unplug the connectorsslowlywith care.
Especiallywhen connecting/disconnecting FFC (film)cablesorFPCcables,do
notunplug the connectors too muchinstantaneously orstrongly,and always
handlethecableswith care.
(8) Connectors are designed so that ifthenumberofpins orthedirection does
not match,connectors will not fit.When having probleminplugging the
connectors,make sure tocheck theirkind,position,and direction.

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COMPOSITE(NTSC, PAL, SECAM,
PAL-M/N, NTSC4.43) &
S-VHS(50/60Hz Y/C) 2SETS
1080 i, 720P,480P,480i
(Y, Pb/Cb, Pr/Cr COMPONENT
SIGNAL) 2SETS
VGA ~ UXGA (15 PIN D-SUB) 1SET
VIDEO 2SETS, DTV/DVD 2SETS,
PC 1SET
8W(R) + 8W(L)
AC 100V~240V, 50/60Hz
320W
RS-232(FOR SOFTWARE UPGRADE)
PC: H/V SIZE & POSITION ADJUST
VIDEO/DTV/DVD:NOMAL,16:9,
PANORAMA,ENLARGE LB,ENLARGE
LBS
20 SCALE ZOOM & PANING
SUPPORT 11 LANGUAGES
STILL, SLEEP MODE,SOUND MODE
3. ELECTRICAL
3-1. VIDEO INPUT
3-2. DTV/DVD INPUT
3-3. PC INPUT
3-4. SOUND INPUT
3-4. SPEAKER OUTPUT
3-5. POWER REQUIREMENT
3-6. POWER CONSUMPTION
3-8. RS-232 CONTROL
3-9. FUNCTION
1) SCALING
2) ZOOM
3) OSD
4) OTHERS
WxHxD=1,039 x 628 x 80 mm
WxHxD=1,039 x 725 x 320 mm
WxHxD=1,256 x 800 x 327 mm
29.9 Kg
36.8 Kg
2. MECHANICAL
2-1. APPEARANCE
1) WITHOUT STAND
2) WITH STAND
3) CARTON BOX
2-2. WEIGHT
1) WITHOUT STAND
2) WITH STAND
DSP-4280NVS
SP-115
42”(16:9)
WORLDWIDE
853(H)X480(V)
R-V28A(E)
UL, C-UL, CE, CB, FCC(CLASSB),
CE(CLASS B)
1. GENERAL
1-1. MODEL NO
1-2. CHASSIS NO
1-3. SCREEN SIZE
1-4. COUNTRY
1-5. RESOLUTION
1-6. REMOCON TYPE
1-7. SAFETY STANDARD
REMARKS P E C I F I C A T I O NI T EM
3.Product Specification

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AC POWER BUTTON(PUSH-PULL
S/W)
MENU, SELECT, UP, DOWN, LEFT,
RIGHT(SOFT S/W)
POWER,INPUT
SELECT,DISPLAY,ZOOM-,
ZOOM+, MENU, UP,
DOWN,VOLUME UP,
VOLUME DOWN,FREEZE,SCREEN
MODE,
SOUND MODE,SLEEP
REMOCON,
BATTERY,INSTRUCTION MANUAL
A/V CABLE,STAND,
WALL HANGER,
SPEAKER R/L
5.USERCONTROL&ACCESSORY
5-1 CONTROL BUTTON(SET)
5-2. REMOTE CONTROL(R-V28)
5-3. ACCESSORIES
16:9
853(H)X480(V)
16.77 MILLION COLOR (8BIT RGB)
1.08(H)X1.08(V)
300cd/m³(WITHFILTERGLASS)
1500:1
160
DEGREE(VERTICAL/HORIZONTAL)
4. OPTICAL
4-2. ASPECTRATIO
4-3. NUMBER OF PIXELS
4-4. DISPLAY COLOR
4-5. PIXEL PITCH
4-6. PEAK LUMINANCE
4-7. CONTRAST RATIO
4-8. VIEWING ANGLE
REMARKS P E C I F I C A T I O NI T EM

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4. BLOCK DIAGRAM

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5. A/V BLOCK DESCRIPTION
5-1. A/VBLOCK DIAGRAM

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5-2.VIDEO PCB
-PROCESSVarious Signal(PC, COMPONENT,COMPOSITE ) to produce24BIT DIGITALoutput
1)ICand TP
(1)IC400(UPD64083)
-Using 3DCOMBFILTERtoseparateCOMPOSITE signalto Brightness Signal(Y) and Color
Signal(C)
*TP (Input :COLORBARPATTERN )
A.YCOMP:Brightness Signal(Y)
B.CCOMP: Color Signal(C)
(2)IC401 (SAA7118E)
-Receive NTSC, SECAM, PAL VIDEO by COMPOSITE(V) , S-VHS(Y.C) COMPONENT(Y CbCr)
and process signal
*TP
A.DECOE:CHIPENABLEpart. Whensignalprocess is doneby IC401, output3.3VDCLEVEL

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(3) IC406(DPTV-MVS)
-A Scan RateConverterwhichconvertsInterlace signal intoProgressivesignal
*TP
A.VVS : VERTICAL SYNC(output by DPTV-MVS)
B.VHS : HORIZONTAL SYNC (output by DPTV-MVS)
C. VCLK:CLOCK(outputby DPTV-MVS)

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(4) IC500(CXA3516R)
-3-channel8-bit165MSPSA/Dconverter which process PC,DTVsignal
* TP
A.GCOAST:COASTCONTOLSignalfor PLL (inputbyCXA3516)
B.GHS:HORIZONTALSYNCfor GRAPHIC(outputbyCXA3516)
C.GCLK:CLOCK for CLOCK(outputbyCXA3516)

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D.GFBK :SYNCfor PLL
(5)IC600(PW171)-ImageprocessorIC
*TP
A.DEN: DATAENABLE (output by PW171)
B.DHS : HORIZONTAL SYNC (output by PW171)

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C.DVS :VERTICAL SYNC for DISPLAY (output by PW171)
D. DCLKB: CLOCKfor DISPLAY (output by PW171)
5-3. JACK PCB
-Separateand process variousVIDEOand AUDIOsignal
(1)IC706(VIDEO/SYNC SELECTOR)
-This chooses Y Cb/PbCr/Pror RGBsignalto output Y Cb/PbCr/Pr,to separateSYNC, and to
perform SYNC COUNTER.
(2) IC704(7_INPUT3_OUTPUT AUDIO/VIDEOSWITCH)
-TheICperformAUDIOorVIDEOSWITCHING
(3)IC700(MULTISTANDARD SOUND PROCDSSOR)
-AUDIOSINGNAL VOLUMEcontrol, EQUALIZERcontrol

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*TP
R_OUT(L_OUT):AUDIOSIGNALthatgoesintoMSP3420beforeAUDIOPROCESSING
(4) IC701 .IC700 (TDA7480)
*TP
A.RIGHT(LEFT) :AMP inputsignal before 30dB amplification
4-1-4.KEYPCB
-Input PCBusing KEY
4-1-5.LED PCB
-PCBfor REMOCON CONTROL

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6. LVDS CABLE
VIDEO BOARD
DIGITAL BOARD (PANEL)
CAUTION!
After servicing, you must check
if ring core is coupled with LVDS cable.
Otherwise, PDP may not display.

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7. SERVICE MODE (VIDEO PCB INITIAL DATA)
(1)InputSelection: VIDEO
(2)USERCONTROLINITIALVALUE
BRIGHTNESS :35, CONTRAST: 47, COLOR: 32,TINT: 0(CENTER)
SHARPNESS : 4
(3)SERVICEMODEINITIALVALUE
1)PW171
SUB-BRIGHTNESS : 28, SUB-CONTRAST : 40
R-BIAS : 64,G-BIAS : 64,B-BIAS : 64
R-GAIN : 64, G-GAIN: 64,B-GAIN : 64
2)SAA7118
SUBBRT : 128,SUBCONT : 50,SUBCLR: 55,SUBTNT :0
SUBSRP: 10
3)DPTV
SUB BRT:61,SUB CONT:16,
4)CXA3516
SUBCONT : 58,CbOFFSET: 39, CrOFFSET: 37, HYS: 3,
THRSLD : 14
5)MSP34X0
PRESCALE: 22
6)PANEL
MOVING :Video60STD
STILL :Video60RFC

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8. SOFTWARE UPGRADE Method
1.Connect theJACKPCBtotheVideo PCB.
2.Connect9 PINserial cable tothecomputer’s serialport.
3.Connectserial cable’s oppositeend toJackPCB’s RS-232Cport.
4.Run PC’s Flashupgrader.exeand thenpush “Next(N) >”button.
1.SelectcurrentUpgradefile
-Copy files sent by researchcenterto afolderyou wish to copy.
-Browse and Select pwSDK.inffrom the folder.
-Push“Next(N)>”button.

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1.Selectasabove and push“Next(N) >”button.Select Commport and Boudrateand push
“Next(N) >”button
1.Upgrade process will bedisplayed. Powerthe AC onwill initiate the download.

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1.When all filesUpgrade are complete, a window(below)will open.Push“Finish”button to
completethe process.

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9. POWER ADJUSTMENTS
1.Vsus(SUSTAINVoltage): DischargeSustain Voltage
.METER used: DIGITAL MULTIMETER (DC Voltage Measure Mode)
.AdjustingTP: TP204 (refer toPAGE11)
.AdjustingVOLUME: RV203 (refer toPAGE11)
.StandardVoltage :170V (This value could be differentfrom theoptimum
adjustingvoltage)
.OptimumadjustingVoltage: StatedintheLABEL
(See voltage adjustmentlabel in the top of Panel Back Plate -PAGE11)
2.Vadd(ADDRESSvoltage): DATAInput Voltage
.METER used: DIGITAL MULTIMETER(DC Voltage Measure Mode)
.AdjustingTP: TP206 (refer toPAGE11)
.AdjustingVOLUME: RV204 (refer toPAGE11)
.StandardVoltage :60V(This value could be differentfromthe optimum
adjustingvoltage)
.Optimum adjustingVoltage: Statedin theLABEL
(See voltage adjustmentlabel in the top of Panel Back Plate -PAGE11)
*.As NECPaneldoesn'tapply Vyer,itisunnecessarytoadjust.