LG RD-JT30 User manual

Contents
1.SafetyPrecautions 3
2.ServicingPrecautions4
3.Specifications5
4.ExplodedView6
5.ReplacementPartsList8
6.BlockDiagram 11
7.Packaging Description 12
8.AppearanceDescription 14
9.AlignmentProcedure 16
10.Howtodisassemble theset 23
11.FAQ(FrequentlyAskedQuestions) 32
12.TroubleShootingGuide 33
13.ServiceAdjustmentGuide 38
14.Firmwareupgradeprocedure 44
15.RS232Codes 47
16.Schematics 49

6
4.ExplodedView
The topillustrationshowsthepartsfrom the frontof theprojector.Theillustration
on thenextpageshowsthepartsvisiblefrom therearoftheprojector.Toseeexploded
viewsof thecaseparts,majorcomponentsandopticalengine.
FrontFan
MainBoard
Lamp Module
BallastModule
Lens
Uppercase

7
SensorBoar
d
RearFan
LampBlower
DC-DCBoard
PowerBoar
d
Chi
p
Boar
d
ColorDrum
OpticalEngine

8
5.ReplacementPartsList
LGRD-JT30 99.J4977.L31
NO. BenQP/N LGP/N DESCRIPTION
155.J4906.001 6871VSN256APCBACHIP/BDLGJT30
2 60.J4910.001 3680V00113AASSYLENSC1,C2JT30PROT
360.J4911.001 5018V00071AASSYFOLDMIRRORMODULEJT30
460.J4912.CL1 6912B22006AASSYCSDRD-JT30LAMPMODULE
4-1 35.81J49.001 3680V00111AGlassfrontUVARJT30PROT
555.J4922.001 6871VSN257APCBASENSOR/BDLGJT30
6 65.J4905.011 3680V00112BCOLORDRUM35MM90DEGJT30
7 65.J4901.011 3680V00116APROJECTIONLENSZOOMJT31CO
871.07XGA.B00 6871VSN271BICDMD0.7XGADDR12
9 42.J4918.001 3720V00206ACVRLEFTABSY7006CJT30
10 42.J4919.001 3720V00207ACVRRIGHTABSY7006CJT30
11 54.J4913.001 5020V00811AKEYPADBD/JT30
12 55.J4901.001 6871VMN657BPCBAMAIN/BDLGJT30
13 55.J4905.001 6871VSN259APCBADC-DC/BDLGJT30
14 55.J4911.001 6871VSN261APCBAPFC/BDLGJT30
15 55.J4924.001 6871VSN260APCBAREARIR/BDJT30
16 60.J4901.001 3580V00093BASSYFRONTDOORJT30
17 54.J4912.001 6316000005ABALLASTPHG151G14USHIOJT30
18 55.J4908.001 6871VSN260BPCBAIR/BDLGJT30
19 60.J4905.001 3110V00320BASSYUPPERCASEJT30
20 60.J4906.001 3720V00205AASSYREARCOVERJT30
21 60.J4907.001 3110V00321AASSYLOWERCASEJT30
22 60.J4908.001 3580V00094AASSYLAMPDOORJT30
23 44.J0502.181 3890V01751CCTN415X325X255LGJT30
24 47.J4908.001 3920V00533BCSNRIGHTJT30
25 27.01218.191 6410VWH015DCORDH03VV-F3G(MI)2500MMCEE
26 27.01418.011 6410VWH015HCORDH05VV-F(MI*3)6A250VS-AF
27 27.02718.201 6410VWH015ECORDH05VV-F(MI)10A250V2500U
28 27.04318.031 6410VWH015FCORDVCTF3G(MI)7A125V1800T-
29 50.73213.501 6851V00021NCABLE4PUSBA-B1800MMBLACK
30 50.J2401.001 6851V00021UCABLED-SUB/RCA1800MM/SL705X
31 50.J2403.501 6851V00021PSIGNAL/C15/15P(-9)2500MM

9
32 50.72918.001 6851V00021RCABLEA/VRCA(R,W,Y)1500MM
33 50.72920.011 6851V00021VC.AMIN-DIN4PS-VIDEOW/S15
34 98.J5501.001 6710V00086EREMOTECONTROLLERLG6710V008
34-1 3550V00341ABATTERYCOVERFORREMORECONTROL
35 98.J1302.041 3880VA0025ASOFTCASESL705XLG
LGRD-JT31 99.J5577.L31
NO. BenQP/N LGP/N DESCRIPTION
155.J4906.001 6871VSN256APCBACHIP/BDLGJT30
2 55.J4922.001 6871VSN257APCBASENSOR/BDLGJT30
3 65.J4905.001 3680V00112ACOLORDRUM35MM80DEGJT30
4 60.J4910.001 3680V00113AASSYLENSC1,C2JT30PROT
560.J4911.001 5018V00071AASSYFOLDMIRRORMODULEJT30
660.J4912.CL1 6912B220006AASSYCSDRD-JT30LAMPMODULE
6-1 35.81J49.001 3680V00111AGlassfrontUVARJT30PROT
765.J4901.011 3680V00116ACTIONLENSZOOMJT31CO
871.08060.000 6871VSN271AICDMD0.6SVGA8060-624C12DD
942.J4918.001 3720V00206ACVRLEFTABSY7006CJT30
10 42.J4919.001 3720V00207ACVRRIGHTABSY7006CJT30
11 54.J4913.001 5020V00811AKEYPADBD/JT30
12 55.J4905.001 6871VSN259APCBADC-DC/BDLGJT30
13 55.J4911.001 6871VSN261APCBAPFC/BDLGJT30
14 55.J4924.001 6871VSN260APCBAREARIR/BDJT30
15 55.J5501.001 6871VMN657APCBAMAIN/BDJT31
16 60.J4901.011 3580V00093AASSYFRONTDOORJT31
17 54.J4912.001 6316000005ABALLASTPHG151G14USHIOJT30
18 55.J4908.001 6871VSN260BPCBAIR/BDLGJT30
19 60.J4905.011 3110V00320AASSYUPPERCASEJT31
20 60.J4906.001 3720V00205AASSYREARCOVERJT30
21 60.J4907.001 3110V00321AASSYLOWERCASEJT30
22 60.J4908.001 3580V00094AASSYLAMPDOORJT30
23 44.J0502.181 3890V01751CCTN415X325X255LGJT30
24 47.J4908.001 3920V00533BCSNRIGHTJT30
25 27.01218.191 6410VWH015DCORDH03VV-F3G(MI)2500MMCEE
26 27.01418.011 6410VWH015HCORDH05VV-F(MI*3)6A250VS-AF
27 27.02718.201 6410VWH015ECORDH05VV-F(MI)10A250V2500U

10
28 27.04318.031 6410VWH015FCORDVCTF3G(MI)7A125V1800T-
29 50.73213.501 6851V00021NCABLE4PUSBA-B1800MMBLACK
30 50.J2401.001 6851V00021UCABLED-SUB/RCA1800MM/SL705X
31 50.J2403.501 6851V00021PSIGNAL/C15/15P(-9)2500MM
32 50.72918.001 6851V00021RCABLEA/VRCA(R,W,Y)1500MM
33 50.72920.011 6851V00021VC.AMIN-DIN4PS-VIDEOW/S15
34 98.J5501.001 6710V00086EREMOTECONTROLLERLG6710V008
34-1 3550V00341ABATTERYCOVERFORREMOTECONTROL
35 98.J1302.041 3880VA0025ASOFTCASESL705XLG

11
6.BlockDiagram

12
7.PackagingDescription

13

14
8.AppearanceDescription

15

16
9.AlignmentProcedure
1.DMDBiasVoltageAlignment
Equipment:None
Procedure:
WatchDMD“BiasVoltageBin”Label(Example:8060-7bbcDDDD XXXXXXX M)
Switchthe DIPswitch(SW2)onMainboardaccording totheredcharacteron the
DMDchip
3.00: E
01: D
10: C
11: B
ON
00

17
2.ColorWheelDelayAlignment
Equipment:
BatteryBiasedSiliconPINDetector
Oscilloscope
Probe
Procedure:
Probeimpedancematches50ohm
OpenFactoryOSD,andselectcolorwheeldelayitem
Leavetheimagepurered(DMDredcurtain)
Putthedetectoron thescreenthatredimage wasprojected.
Watchtheoscilloscopeandnoticethesquarewaveform
Usethe “ ”and “ ”keytoincrementordecrement thecolorwheeldelayvalue
Nomatterthewaveformissquareornot,let thewaveformwaslagged first
Thenincrementordecrementthevalue tolet thewaveformtobesquare
Donotadjusttoomuch,letthesignalgetahead,ifithappens,gobacktostep7anddo
itagain.
Changetheinput topureblueandrepeat theaboveproceduresagain.
3.PCColorAlignmentProcedure
Equipment:
Patterngenerator
Procedure:
Connectpower, D-sub,intoprojector.
Changepatterngeneratortopattern435-DISC.
Lightonprojector
Enterfactorymode.
ChooseADCBrightnessitemtoPress.
ChooseADC Contrastitem toPress.
Changepatterngeneratortopattern32graybar.
Seeifanygraylevelwasabnormal,iftheabnormalityhappened, wentbackto
step4andthenrediditagain.
Quit factorymode,afteraboveadjustmentsfinished.
Lag Exact Ahead

18
4.HDTVColorAdjustmentProcedure
Equipment:
Patterngenerator(VG-828)
Luxmeter(CL-100)
Procedure:
(a).Offsetadjustment:
Blackcoordinatespec:
OsramlampOshiolamp
x0 0.281 0.010.313 0.01
y0 0.311 0.010.329 0.01
ThevarianceofcolorcoordinateviaPboffsetandProffset:
x y
Pboffset x y
Pboffset x y
Proffset x y
Proffset x y
If welinethexandy, thenthePboffsetis theshiftactionandtheProffsetisthe
rotationalaction.
Connectpower,YPbPrVideointoprojector.
ChangeTimingandpatternofpatterngenerator:
Timing :480P(H:31.54KHz,V:60.08Hz)
pattern:black
Lightonprojector
SetuserOSDvaluestodefault.
Enterfactorymode.
SetFactoryvaluestodefault.
Follow thePbProffsetadjustment flowchart:

19

20
5.OpticalEngineAssemblyProcedure
Note:
1.Everyoperatormustcheckthedust/chiponeveryopticalcomponentbefore
assembly.
2.Dustremoveprocedureisdefinedindocument01.
5.AssyC3
Lenson
Holder
LensC3
MakesureLensC3is
exactlycontactedon
relateddatumofholder
AssemblelensC3onholder UVglueandUVgun
6.Assemble
C3module
onhsg
AssembleC3moduleonhsg ScrewDriver
No. Stop Check Action Review Equipment
RemovedustonROD
AssembleClipRodBtm Screwdriver
PutalittleglueonRODalignsurface glueCA064
Pull theclipbackwardby
screwdriver
AssembleROD Screwdriver
Assemblecliprodtop
1.ROD
Assemblecliprodside Screwdriver
2Assy
C1C2
module
Checkthefollowed
directionofC1C2on SOP
Assemblec1c2module Screwdriver
3.AssyFM
onholder
makesurethedirectionof
mirrorisprecise
1.Putglue727onthreeslotdatumof
holder
2.putA649onthebackofmirror
3.Assemblemirroronholderbyglue
Glue727andActivator
A649
4.AssyFM
Module
AssembleFMmoduleonDmdHsg
withspringandadjustscrewwasher
Screwdriver
Keeptheoriginalposition
offoldmirror
Controlthe1.65mmbetweenHsg
andholderbyjigortorgue
Screwdriver
jig