Panasonic PTL720U - LCD PROJECTOR User manual

ORDERNO. VED0206331C0
D10
LCD Projector
PT-L720U / PT-L720E/ PT-L520U / PT-L520E
SPECIFICATIONS
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Please refer to theOperating Instructionsin theappendix
folder. / (Go to Appendix List)
1. SafetyPrecautions
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1.1. General Guidelines
-Forcontinuedsafety, no modification ofanycircuitmust be
attempted.
-Unplug thepowercordfromthepoweroutlet beforedisassembling
thisprojector.
-Itisadvisabletouse anisolation transformerintheACpowerline
beforetheservice.
-Observetheoriginal leaddress during theservice. Ifashortcircuit
isfound, replace all theparts overheatedordamagedbytheshort
circuit.
-Aftertheservice, all theprotectivedevices suchas insulation
barriers, insulation papers, shields, and isolation R-C
combinationsmust beproperlyinstalled.
-Aftertheservice, check theleakagecurrenttopreventthe
customerfromgetting anelectricshock.
1.2. LeakageCurrentCheck
1. Preparethemeasuring circuitas showninFig.1.
Besuretouse avoltmeterhaving theperformance describedin
Table1. Fig. 1
Table1
Fig. 2
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2. Assemblethecircuitas showninFig. 2. Plug thepowercordina
poweroutlet.
3. Connect M1toT1according toFig. 2and measurethevoltage.
4. Changetheconnection ofM1fromT1toT2and measurethe
voltageagain.
5. Thevoltmetermust read0.375 Vorlowerinbothofsteps3and 4.
Thismeansthat thecurrentmust be0.75 mAorless.
6. Ifthereading isoutoftheabovestandard, theprojectormust be
repairedand recheckedbeforereturning tothecustomerbecause
ofapossibilityofanelectricshock.
1.3. UVPrecaution and UHMLampPrecautions
-Besuretounplug thepowercordfromthepoweroutlet when
replacing thelamp.
-Because thelampreaches averyhigh temperatureduring its
operation, waituntil itcoolscompletelywhenreplacing theLamp
Unit.
-Thelampemits small amounts ofUV-radiation, avoiddirect-eye
contact withthelight.
-Because thehigh pressurelampinvolves arisk ofexplosion, never
touchthelampwireleadduring theservice. (See Fig. 3)
Fig.3
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2. Ext Option
Thisprojector has EXTOPTIONinaddition tostandard on-screenmenus.
-ThereareSELF CHECK and SERVICEMODEforservice, etc.
2.1. ProceduretoenterEXTOPTION
1. Press "MENU"button on themainunitorremote control unitto
display"MENU"screen, thenselect "OPTION1"and press
"ENTER"button.
2. Select "OSD"on "OPTION1"menu and press "ENTER"button 3
secondsorlonger.
MENU OPTION1OSD
2.2. EXTOPTIONMenu and Functions
-FREEZEMSG
Switching ON/OFF "FREEZE"on-screendisplay
-ANGLERESET
Switching ON/OFF "AUTO KEYSTN(AutomaticKeystone)"
reference level setting
Note:
-Normally, do notselect. (Anglereset data will berewritten.)
-FANFULLMODE
Switching ON"FANFULLMODE", therotation level ofthefan
becomes high-speedrotation (fixed). Moreover, when"FAN
FULLMODE"isON, changing "FANCONTROL"inOPTION2
becomes impossible(setting FANFULLMODEisgivenpriority
morethanFANCONTROL).
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Caution:
-Switching ON"FANFULLMODE"whileusedusually(at anelevation
oflowerthan1400 m), thismaycause malfunctions.
-AUTOSETUP
Setting AUTO SETUPmode
-STANDARD:To set thenormal mode(thedotclock isadjusted
strictly))
-SPECIAL:To set thespecial mode(thedotclock isadjusted
roughly)
-SELF CHECK
To entertheself-check mode
-SERVICEMODE
To entertheservice mode
2.3. Canceling EXTOPTION
Press "MENU" button on themainunitor remotecontrol unit.
3. Self-Check Mode
Thismodeisusedtonarrowdownthelocation ofthefailure.
3.1. Proceduretoentertheself-check mode
Select"SELF CHECK" on "EXTOPTION" menu and press "ENTER" button on themainunitor
remotecontrol unit.
3.2. SelfCheck Displayand Contents
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3.3. Canceling theself-check mode
Press "MENU" button on themainunitor remotecontrol unit.
4. Service Mode
Thismodeisusedtodisplay five kindsoftestpatterns[Horizontal lines, Vertical lines, Dots,
Crosshatchand White(Nopattern)] inthefour colors(White, Red, Greenand Blue).
Note:
-Ontheservice mode, displaysabovepatternsbyeachcolorwithout
test equipmentsuchas PCorSG. Use theservice modefor
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simplifiedadjustments byyoureyes and soon.
4.1. Proceduretoentertheservice mode
Select"SERVICE MODE" on "EXTOPTION" menu and press "ENTER" button on themainunitor
remotecontrol unit.
Note:
-Intheservice mode, pressing theup-arrow " "ordown-arrow "
"button allowsthetest patternselection and theleft-arrow " "or
right-arrow " "button thecolorselection (White / Red/ Green/
Blue).
4.2. Canceling theservice mode
Press "MENU" button on themainunitor remotecontrol unit.
5. Using the SERIALConnector
Theserial connector whichison thesideconnector panel oftheprojector conformstoRS-232C
standard. Thisprojector canbecontrolledbyaPCwhichisconnectedas shownin"5.1.
Connection". For controlling thisprojector byaPC, requires communication softwareon the
market, and inputscontrol commandsaccording tocommunication settingsand basicformat
below.
5.1. Connection
Note:
Use apropercommunication cablewhichissuitablefor thePCtoconnectSERIALconnector and
thePC.
5.2. PinLayoutand Signal Names forSERIALConnector
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PinNo Signal Name Contents
1 --- NC
2TXD Transmitdata
3 RXD Receive data
4 --- NC
5GND Ground
6DSR
7CTS Connectedinternally
8RTS
9--- NC
5.3. Communication Settings
Signal Level Contents Description
Sync. method Asynchronous Synchronizes every1
character
bits)
Baud rate Conforms
to 9600 bps Datatransferspeed
Parity RS-232C None Error detection method
Characterlength standard 8bits Numberofbitcomposing 1
character
Stop bit 1bit Uses stop bitwhen
asynchronous
method
X parameter Notused
S parameter Notused
5.4. BasicFormat
Thedatasentfrom thePCtotheprojector istransmittedintheformatshownbelow.
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Notes:
-Ifsending multiplecommands, check that acall back has been
receivedfromtheprojectorfor1command beforesending thenext
command.
-Whenacommand whichdoes notrequireparametersissent, the
colon (:)isnotrequired.
5.5. Control/ QueryCommands
Control Commands
QueryCommands
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Parameters
[Example]
Whencontrolstheaudiovolumeto+30 byaPC
(Sendscommandsas thefollowing:)
-Whenacommand whichdoes notrequireparametersissent, the
colon (:)isnotrequired.
5.6. Communication CableSpecifications
5.7. Signal SelectorConnecting CableSpecifications
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Whenconnecting toasignal selector (ex. TW-SWS62J), use acablewithspecificationsbelow.
Connecting method:Connectsavideosignal cablefrom thesignal selector to"VIDEOIN", and an
RGBsignal cableto"RGB1IN".
Note:
SetVP control terminal switchofthesignal selector toVP TYPE "B".
6. DisassemblyInstructions
Warning:
-Besuretounplug thepowercordfromthepoweroutlet before
disassembling thisprojector.
Caution:
-Whileturning overaprintedcircuitboard, besuretoputa
insulating material underittopreventashortcircuit.
-Printedcircuitboardsand wires must notbepulledforcibly, butbe
handledcarefully.
-Connectorsalsomust behandledcarefully.
-Afterrepairing thisprojector, besuretoputback thewires and
connectorstotheoriginal condition.
6.1. PrintedCircuitBoardand MainParts Location
Electrical Parts
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Optical Parts
6.2. Removal ofUpperCase
1. Turntheprojectorupsidedown.
2. Unscrew the5screwsfixing theuppercase.
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3. Returntheprojectortothenormal position.
4. Removetheuppercase.
6.3. Removal ofA-P.C.Board
1. Removetheuppercase according tothesection 6.2. "Removal of
UpperCase".
2. ForPT-L720U/E, unscrew the2screwsand removetheWL-fittings
(3).
3. Disconnect theconnectorsfrom/totheA-P.C.Board.
4. Unscrew the5screwsand removetheterminal cover.
5. Unscrew the6screwsand removetheA-P.C.Board.
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6.4. Removal ofR-P.C.Board
1. Removetheuppercase according tothesection 6.2. "Removal of
UpperCase".
2. Disconnect the1connector.
3. Unhookresinhooks oftheintake duct (1) and removetheR-
P.C.Board.
6.5. Removal ofK-Module
1. Removetheuppercase according tothesection 6.2. "Removal of
UpperCase".
2. RemovetheA-P.C.Boardaccording tothesection 6.3. "Removal of
A-P.C.Board".
3. Unscrew the2screwsfixing theK-Module.
4. Whiledisconnecting theconnector, removetheK-Module.
Note:
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-Payattention thecableprocessing.
6.6. Removal ofP/Q-Module
1. Removetheuppercase according tothesection 6.2. "Removal of
UpperCase".
2. RemovetheA-P.C.Boardaccording tothesection 6.3. "Removal of
A-P.C.Board".
3. Unscrew the2screw and removetheoptical ground fittings.
4. Unscrew the2screw and removethehandleshaft reinforcement
fittingsfromthebottomcase.
5. Unscrew the2screwsand removethelampunitterminal fromthe
analysisblock.
6. Unscrew the2screwsfixing thepowerunit.
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7. Whiledisconnecting theconnector, take thepowerunitout.
8. Unscrew the2screws.
9. Whileunhooking thehooks, separate theP/Q-Moduleblock and
theZ-Moduleblock.
10. Unscrew the1screw fixing theP/Q-Module.
11. Removethe3resinousstands(spacers), thenseparate theP/Q-
Moduleand thepowerbox(1).
Note:
-Theresinousstands(spacers) areremoved;first, eachlargehook
isshutwhileapplying force inthearrow direction witharadio
pincersetc., next, eachsmall hookisshut.
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6.7. Removal ofZ-Module
1. Separate theP/Q-Moduleblock and theZ-Moduleblock according
tothesteps1through 9inthesection 6.6. "Removal ofP/Q-
Module".
2. Unscrew the2screw fixing theZ-Module.
3. Whilepressing toshuteachsmall hookoftheresinousstands
(spacers), removetheZ-Module.
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6.8. Removal ofLCD Block and Lens
1. Removetheuppercase according tothesection 6.2. "Removal of
UpperCase".
2. RemovetheA-P.C.Boardaccording tothesection 6.3. "Removal of
A-P.C.Board".
3. Unscrew the2screwsand removetheoptical ground fittings.
4. Unscrew the4screwsand take theLCD block withlensout.
5. Unscrew the4screws, thenseparate theLCD block and thelens.
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