Panasonic PTL720U - LCD PROJECTOR User manual

ORDERNO. VED0206331C0
D10
LCD Projector
PT-L720U / PT-L720E/ PT-L520U / PT-L520E
SPECIFICATIONS
1

2

Please refer to theOperating Instructionsin theappendix
folder. / (Go to Appendix List)
1. SafetyPrecautions
3

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
4

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
5

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).
6

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
7

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
8

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
9

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.
10