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SERVICE MANUAL
Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining thesafety and performance of the set.
This document has been published to be used forafter sales service only.The contents are subject to change without notice.
SAFETY PRECAUTIONIMPORTANT SERVICE SAFETY NOTES.............iPrecautions for using lead-free solder ..............vi
CHAPTER 1. OPERATION MANUAL[1] Specifications ................................................. 1-1[2] Parts Name and Basic Operation................... 1-2[3] DIMENSIONS ................................................ 1-8[4] Regarding the lamp........................................ 1-9
CHAPTER 2. REMOVING OF MAJOR PARTS[1] Removing the top Body.................................. 2-1[2] Removing the MAIN Unit................................ 2-3[3] Removing the Speaker Ass'y and TERMI-
NAL Unit ........................................................ 2-4[4] Removing the EX-Duct Unit and Optical
Mechanism Unit ............................................. 2-5[5] Removing the Duct and Fan .......................... 2-6[6] Removing the POWER/BALLAST Ass'y
Unit and R/C RECEIVER Unit........................ 2-7[7] Removing the Fan Unit and POWER Unit
and BALLAST/BALLAST CONTROL Ass'y Unit................................................................. 2-8
CHAPTER 3. THE OPTICAL UNIT OUTLINE[1] THE OPTICAL UNIT OUTLINE...................... 3-1
CHAPTER 4. ELECTRICAL ADJUSTMENT[1] ELECTRICAL ADJUSTMENT........................ 4-1[2] Adjustment mode process menu.................... 4-4
CHAPTER 5. TROUBLESHOOTING TABLE[1] TROUBLESHOOTING TABLE ......................5-1
CHAPTER 6. MAJOR IC INFORMATION[1] MAJOR IC INFORMATION............................6-1
CHAPTER 7. BLOCK DIAGRAM/OVERALL WIRING DIAGRAM[1] BLOCK DIAGRAM.........................................7-1[2] OVERALL WIRING DIAGRAM......................7-2
CHAPTER 8. PRINTED WIRING BOARD[1] MAIN Unit ......................................................8-1[2] DMD Unit .......................................................8-5[3] POWER Unit..................................................8-6[4] BALLAST Unit ...............................................8-9[5] BALLAST CONTROL Unit ...........................8-10[6] TERMINAL Unit ........................................... 8-11[7] R/C RECEIVER Unit/PHOTO SENSOR
Unit ..............................................................8-12
CHAPTER 9. WAVEFORMS[1] WAVEFORMS ...............................................9-1
CHAPTER 10. SCHEMATIC DIAGRAM[1] DESCRIPTION OF SCHEMATIC DIA-
GRAM..........................................................10-1[2] SCHEMATIC DIAGRAM..............................10-2
Parts Guide
TopPage
CONTENTS
No. SY8V1PGD3750W
In the interests of user-safety (Required by safety regulations in some countries) the set should be re-stored to its original condition and only parts identical to those specified should be used.
PG-D3750W
PG-D3750WMODEL
DATA PROJECTOR
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PG-D3750WPGD3750W Service Manual
SAFETY PRECAUTION
IMPORTANT SERVICE SAFETY NOTES
IMPORTANT SERVICE SAFETY NOTES (for USA)
Service work should be performed only by qualified service technicians who are
thoroughly familiar with all safety checks and servicing guidelines as follows:
WARNING1. For continued safety, no modification of any circuit
should be attempted.2. Disconnect AC power before servicing.
BEFORE RETURNING THE PROJECTOR:
(Fire & Shock Hazard)
Before returning the projector to the user, perform
the following safety checks:
1. Inspect lead wires are not pinched between the chassisand other metal parts of the projector.
2. Inspect all protective devices such as non-metalliccontrol knobs, insulating materials, cabinet backs,adjustment and compartment covers or shields,isolation resistor-capacity networks, mechanicalinsulators, etc.
3. To be sure that no shock hazard exists, check forcurrent leakage in the following manner:Plug the AC cord directly into a 120 - volt AC outlet,(Do not use an isolation transformer for this test).Using two clip leads, connect a 1.5k ohm, 10 wattresistor paralleled by a 0.15F capacitor in parallelbetween all exposed metal cabinet parts and earthground.
Use an AC voltmeter with sensitivity of 5000 ohm pervolt., or higher, sensitivity to measure the AC voltagedrop across the resistor.All checks must be repeated with the AC plugconnection reversed. (If necessary, a non-polarizedadapter plug must be used only for the purpose ofcompleting these checks.)Any reading of 0.4 volts RMS (this corresponds to 0.27milliamp. AC.) or more is excessive and indicates apotential shock hazard which must be corrected beforereturning the unit to the owner.
SAFETY NOTICEMany electrical and mechanical parts in DLPProjector have special safety-related characteristics.These characteristics are often not evident from visualinspection, nor can protection afforded by them benecessarily increased by using replacement componentsrated for higher voltage, wattage, etc.Replacement parts which have these special safetycharacteristics are identified in this manual; electricalcomponents having such features are identified by and shaded areas in the Replacement Parts Lists andSchematic Diagrams. For continued protection,
replacement parts must be identical to those used inthe original circuit. The use of a substitute replacementparts which do not have the same safety characteristicsas the factory recommended replacement parts shownin this service manual, may create shock, fire or otherhazards.
WARNING: The bimetallic component has the primary
conductive side exposed. Be very careful in
handling this component when the power is on.
DVMAC SCALE
1.5k ohm10W
TO EXPOSEDMETAL PARTS
CONNECT TOKNOWN EARTHGROUND
0.15 FTEST PROBE
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PG-D3750W
PRECAUTIONS A PRENDRE LORS DE LA REPARATIONNe peut effectuer la rparation qu' un technicien spcialis qui s'est parfaitement
accoutum toute vrification de scurit et aux conseils suivants.
AVERTISSEMENT
1. N'entreprendre aucune modification de tout circuit.C'est dangereux.
2. Dbrancher le rcepteur avant toute rparation.
VERIFICATIONS CONTRE L'INCEN-DIE ET
LE CHOC ELECTRIQUE
Avant de rendre le rcepteur l'utilisateur, effectuer
les vrifications suivantes.
1. Inspecter tous les faisceaux de cbles pour s'assurerque les fils ne soient pas pincs ou qu'un outil ne soitpas plac entre le chssis et les autres picesmtalliques du rcepteur.
2. Inspecter tous les dispositifs de protection comme lesboutons de commande non-mtalliques, les isolants, ledos du coffret, les couvercles ou blindages de rglageet de compartiment, les rseaux de rsistance-capacit,les isolateurs mcaniques, etc.
3. S'assurer qu'il n'y ait pas de danger d'lectrocution envrifiant la fuite de courant, de la facon suivante:Brancher le cordon d'alimentation directem-ent uneprise de courant de 120 - V. (Ne pas utiliser detransformateur d'isolation pour cet essai).A l'aide de deux fils pinces, brancher une rsistancede 1.5 k 10 watts en parallle avec un condensateurde 0.15F en srie avec toutes les pices mtalliquesexposes du coffret et une terre connue comme uneconduite lectrique ou une prise de terre branche laterre.
Utiliser un voltmtre CA d'une sensibilit d'au moins5000/V pour mesurer la chute de tension en traversde la rsistance.Toucher avec la sonde d'essai les pices mtalliquesexposes qui prsentent une voie de retour au chssis(antenne, coffret mtallique, tte des vis, arbres decommande et des boutons, cusson, etc.) et mesurer lachute de tension CA en-travers de la rsistance. Toutesles vrifications doivent tre refaites aprs avoir inversla fiche du cordon d'alimentation. (Si ncessaire, uneprise d'adpatation non polarise peut tre utilise dansle but de terminer ces vrifications.)La tension de pointe mesure ne doit pas dpasser 0.4V(correspondante au courant CA de pointe de 0.27mA).Dans le cas contraire, il y a une possibilit de choclectrique qui doit tre supprime avant de rendre lercepteur au client.
DVMECHELLE CA
1.5k ohm10W
0.15FSONDE D'ESSAI
AUX PIECESMETALLIQUESEXPOSEES
BRANCHER A UNETERRE CONNUE
AVIS POUR LA SECURITEDe nombreuses pices, lectriques et mcaniques, dansles projecteur DLP prsentent des caractristiquesspciales relatives la scurit, qui ne sont souvent pasvidentes vue.Le degr de protection ne peut pas tre ncessairementaugmente en utilisant des pices de remplacementtalonnes pour haute tension, puissance, etc.Les pices de remplacement qui prsentent cescaractristiques sont identifies dans ce manuel;les pices lectriques qui prsentent ces particularitssont identifies par la marque et hachures dans la
liste des pices de remplacement et les diagrammesschmatiques. Pour assurer la protection, ces picesdoivent tre identiques celles utilises dans le circuitdorigine. Lutilisation de pices qui nont pas les mmescaractristiques que les pices recommandes par lusine,indiques dans ce manuel, peut provoquer deslectrocutions, incendies ou autres accidents.
AVERTISSEMENT: La composante bimtallique dispose du
conducteur primaire dnud. Faire attention
lors de la manipulation de cette
composante sous tension.
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PG-D3750W
NOTE POUR LE PERSONNELDENTRETIEN
PRECAUTION POUR LES RADIATIONS UV
La source de lumire, la lampe, dans le projecteur metde petites quantits de radiation UV.
EVITEZ TOUTE EXPOSITION DIRECTE DESYEUX ET DE LA PEAU.Pour votre scurit, nous vous prions de respecterles points suivants:
1. Toujours porter des lunettes de soleil lors dun entretiendu projecteuravec la lampe allumeet le haut du coffret retir.
2. Ne pas faire fonctionner la lampe lextrieur du botierde lampe.
3. Ne pas faire fonctionner plus de 2 heures avec le coffretretir.
Prcautions pour les radiations UVet la lampe moyenne pression1. Toujours dbrancher la fiche AC lors du remplacement
de la lampe.2. Laisser lunit refroidir pendant une heure avant de
procder lentretien.3. Ne remplacer quavec une lampe du mme type. Type
AN-D400LP, caractristique 330W-DC.4. La lampe met de petites quantits de radiation UV-
viter tout contact direct avec les yeux.5. La lampe moyenne pression implique un risque
dexplosion. Toujours suivre les instructionsdinstallation dcrites ci-dessous et manipuler la lampeavec soin.
NOTE TO SERVICEPERSONNEL
UV-RADIATION PRECAUTION
The light source, lamp, in the projector emits small
amounts of UV-Radiation.
AVOID DIRECT EYE AND SKIN EXPOSURE.
To ensure safety please adhere to the following:
1. Be sure to wear sun-glasses when servicing theprojector with the lampturned on and the topenclosure removed.
2. Do not operate the lamp outside of the lamp housing.
3. Do not operate for more than 2 hours with the enclosureremoved.
UV-Radiation and Medium PressureLamp Precautions1. Be sure to disconnect the AC plug when replacing the
lamp.2. Allow one hour for the unit to cool down before
servicing.3. Replace only with same type lamp. Type AN-D400LP
rated 330W DC.4. The lamp emits small amounts of UV-Radiation, avoid
direct-eye contact.5. Themedium pressure lamp involves a risk of explosion.
Be sure to follow installation instructions describedbelow and handle the lamp with care.
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PG-D3750W
Remplacement de la lampeRemarque:Comme la lampe devient trs chaude pendant lefonctionnement de lunit, son remplacement ne doittre effectu au moins une heure aprs avoir couplalimentation (pour permettre la lampe de refroidir).En installant la nouvelle lampe, sassurer de ne pastoucher la lampe (ampoule). Remplacer la lampe entenant son rflecteur .[Nutiliser quun remplacement dorigine.]
1
2
2
Lamp
Reflector
Comme de petites quantits de radiation UV sontmises par une ouverture entre les ventilateurs as-pirants, il est recommand de placer le capuchon deloptique optionnelle sur louverture pendant lentretienpour viter une exposition des yeux et la peau.
Since small amounts of UV-radiation are emittedfrom an opening between the exhaust fans, it is rec-ommended to place the cap of the optional lens onthe opening during servicing to avoid eye and skinexposure.
DANGER ! Never turn the power on without thelamp to avoid electric-shock or damage of the devicessince the stabilizer generates high voltages at its start.
UV-RADIATION PRECAUTION (Continued)
Lamp ReplacementNote:Since the lamp reaches a very high temperature duringunits operation replacement of the lamp should bedone at least one hour after the power has been turnedoff. (to allow the lamp to cool off.)Installing the new lamp, make sure not to touch thelamp (bulb) replace the lamp by holding its reflector
.[Use original replacement only.]
DANGER ! Ne jamais mettre sous tension sans lalampe pour viter un choc lectrique ou desdommages des appareils car le stabilisateur gnrede hautes tensions sa mise en route.
1
2
2
PRECAUTION POUR LES RADIATIONS UV (Suite)
Lampe
Reflecteur
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PG-D3750W
WARNING: High brightness light source, do not stare into the beam of light, or view directly. Be especially
careful that children do not stare directly into the beam of light.
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS UNIT TO
MOISTURE OR WET LOCATIONS.
CAUTION: TOREDUCETHERISKOFELECTRIC SHOCK,DONOTREMOVECABINET.
NOUSER-SERVICEABLE PARTS EXCEPT LAMPUNIT.REFERSERVICINGTOQUALIFIEDSERVICE
PERSONNEL.
The lighting flash with arrowhead within atriangle is intended to tell the user thatparts inside the product are risk of electricshock to persons.
The exclamation point within a triangle isintended to tell the user that importantoperating and servicing instructions are inthe manual with the projector.
CAUTION
AVERTISSEMENT: Source lumineuse de grande intensit. Ne pas fixer le faisceau lumineux ou le regarder
directement. Veiller particulirement viter que les enfants ne fixent directement le
faisceau lumineux.
AVERTISSEMENT: AFIN DEVITER TOUT RISQUE DINCENDIE OU DELECTROCUTION, NE PAS PLACER
CET APPAREIL DANS UN ENDROIT HUMIDE OU MOUILLE.
Lclair termin dune flche lintrieurdun triangle indique lutilisateur que lespieces se trouvant dans lappareil sontsusceptibles de provoquer une dchargelectrique.
Le point dexclamation lintrieur duntriangle indique lutilisateur que lesinstruct ions de fonctionnement etdentretien sont dtailles dans lesdocuments fournis avec le projecteur.
RISQUEDLECTROCUTION. NEPASRETIRER LESVIS LEXCEPTIONDE LAVIS DEREPARATIONUTILISATEUR
SPECIFIEES
ATTENTION
ATTENTION: POUREVITER TOUTRISQUEDELECTROCUTION, NE PASRETIRER LECAPOT.
AUCUNEDES PIECES INTERIEURESNEST REPARABLEPARLUTILISATEUR, A LEXCEPTIONDELUNITEDE
LAMPE. POUR TOUTEREPARATION, SADRESSERAUNTECHNICIENDENTRETIENQUALIFIE.
RISK OF ELECTRIC SHOCK.DONOTREMOVE SCREWSEXCEPT SPECIFIED USER
SERVICESCREW.
CAUTIONCAUTION
DOUBLE POLE / NEUTRAL FUSING
ATTENTIONDOUBLE POLE / FUSIBLE SUR LE NEUTRE
(POWER Unit)For continuedprotection against arisk of fire, replaceonly with same type8A, AC250V fuse.(F701, F702)
PRECAUTION(Unit de PUTSSANCE)
Pour une protectioncontinue contre unrisques dincendie, neremplacer quavec unfusible 8A, AC250Vdu mme type.(F701, F702)
8A 250V
8A 250V v
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PG-D3750WPrecautions for using lead-free solder
Employing lead-free solder PWBs of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The
alphabetical character following LF shows the type of lead-free solder.
Example:
Using lead-free wire solder When fixing the PWB soldered with the lead-free solder, apply lead-free wire solder. Repairing with conventional lead wire solder may cause dam-
age or accident due to cracks.
As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40 C, we recommend you to use a dedicated solderingbit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.
Soldering As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 C which is higher than the conventional lead solder by 40 C, and as it has poor
solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may bepeeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm thesteady soldering condition.
Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit asrequired.
If a different type of solder stays on the tip of the soldering bit, it is alloyed with lead-free solder. Clean the bit after every use of it.
When the tip of the soldering bit is blackened during use, file it with steel wool or fine sandpaper.
Be careful when replacing parts with polarity indication on the PWB silk.
Lead-free wire solder for servicing
L F a
Indicates lead-free solder of tin, silver and copper.
Part No. Description Code
ZHNDAi123250E J 0.3mm 250g (1roll) BLZHNDAi126500E J 0.6mm 500g (1roll) BKZHNDAi12801KE J 1.0mm 1kg (1roll) BMvi
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PG-D3750WPGD3750W Service Manual CHAPTER 1. OPERATION MANUAL
[1] Specifications
Model PG-D3750W
Display devices 0.65" DLP Chip
Resolution WXGA (1280 800)
Lens F number F 2.5 - 2.7
Zoom Manual, 1.15 (f = 21.0 - 24.2 mm)
Focus Manual
Input terminals HDMI 1
Computer/Component1/2(mini D-sub 15 pin)
2
S-Video (mini DIN 4 pin) 1
Video (RCA) 1
Audio (3.5 mm stereo minijack) 1
Audio (RCA) 1 (L/R)
Outputterminals
Computer/Component(mini D-sub 15 pin)
1
Audio (3.5 mm stereo minijack) 1 (variable audio output)
Control andcommunicationterminals
LAN (RJ-45) 1
USB (Type B) 1
RS-232C (mini D-sub 9 pin) 1
Speakers 5W 2 (Stereo)
Projection lamp 330 W
Rated voltage AC 100 - 240 V
Rated frequency 50/60 Hz
Input current 4.5 A
Power consumption (Standby*) 429 W (10.6 W) with AC 100 V408 W (11.2 W) with AC 240 V
Operation temperature 41F to 95F (+5C to +35C)
Cabinet Plastic
Dimensions (main body only) [W H D] 15 3/4" 3 15/16" 13 13/64"(400 100 335 mm)
Weight (approx.) 12.8 lbs. (5.8 kg)
*Standby Mode: Standard
As a part of policy of continuous improvement, SHARP reserves the right to make design andspecification changes for product improvement without prior notice. The performance specificationfigures indicated are nominal values of production units. There may be some deviations from thesevalues in individual units.1 1
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PG-D3750W[2] Parts Name and Basic Operation
Top View
STANDBY/ONbuttonFor turning thepower on andputting theprojector intostandby mode.
Lampindicator
Temperaturewarningindicator
Adjustment buttons( / / / )For selecting menu items.
VOL (Volume)buttons (- / +)For adjusting thespeaker soundlevel.
ENTER buttonFor setting items selectedor adjusted on the menu.
MENU/HELP buttonFor displayingadjustment andsetting screens, andhelp screen.
INPUT buttons ( / )For switching input mode.
KEYSTONE buttonFor entering the KeystoneCorrection mode.
ECO+QUIETbuttonFor lowering thenoise of the coolingfan and extendingthe lamp life.
Powerindicator
RETURN buttonFor returning to theprevious menu screenduring menu operations.
AUTO SYNCbuttonFor automaticallyadjusting imageswhen connectedto a computer.
Focus ringFor adjustingthe focus.
Remote controlsensor
HEIGHTADJUST lever
Intake vent
Zoom ringFor enlarging/reducing the picture.
Front View
Adjustment foot
Lens shutter Adjustment foot
EExxhhaauusstt vveenntt1 2
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PG-D3750W
Using the Kensington LockThis projector has a Kensington Security Standard connector for use with a KensingtonMicroSaver Security System. Refer to the information that came with the system forinstructions on how to use it to secure the projector.
Carrying handle
Remote controlsensor
Terminals
Rear View
AAUUDDIIOO 22 iinnppuutt tteerrmmiinnaall
SS--VVIIDDEEOO iinnppuutt tteerrmmiinnaallTerminal for connecting videoequipment with anS-video terminal.
VVIIDDEEOO iinnppuutt tteerrmmiinnaallTerminal for connectingvideo equipment.
KKeennssiinnggttoonn SSeeccuurriittyySSttaannddaarrdd ccoonnnneeccttoorr
AACC ssoocckkeettConnect thesupplied power cord.
AAUUDDIIOO OOUUTTtteerrmmiinnaallAudio output terminal of equipmentconnected to the audio input terminal.
AAUUDDIIOO 11 iinnppuutttteerrmmiinnaall
HHDDMMII tteerrmmiinnaallTerminal forHDMI input.
LLAANN tteerrmmiinnaallTerminal for controllingthe projector using acomputer via network.
RRSS--223322CC tteerrmmiinnaallTerminal for controlling theprojector using a computer.
CCOOMMPPUUTTEERR//CCOOMMPPOONNEENNTT11 aanndd 22iinnppuutt tteerrmmiinnaallssTerminals for computer RGB andcomponent signals.
UUSSBB tteerrmmiinnaallTTeerrmmiinnaallconnecting withthe USB terminalon the computerfor using thesupplied remotecontrol as thecomputer mouse.
MMOONNIITTOORR OOUUTT tteerrmmiinnaall((OOuuttppuutt tteerrmmiinnaall ffoorr ccoommppuutteerrRRGGBB aanndd ccoommppoonneenntt ssiiggnnaallss..SShhaarreedd ffoorr CCOOMMPPUUTTEERR//CCOOMMPPOONNEENNTT11 aanndd 22))Terminal for connecting a monitor.
SSppeeaakkeerr
SSppeeaakkeerr
SSeeccuurriittyy bbaarr
Using the Carrying HandleWhen transporting the projector, carry it by the carrying handle on theside.Always close the lens shutter to prevent damage to the lens whentransporting the projector.Do not lift or carry the projector by the lens as this may damage thelens.1 3
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PG-D3750W
SSTTAANNDDBBYY bbuuttttoonnFor putting the projector intothe standby mode.
BBRREEAAKK TTIIMMEERR bbuuttttoonnFor displaying thebreak time.
CCOOMMPPUUTTEERR11//22,, HHDDMMII,,SS--VVIIDDEEOO,, VVIIDDEEOO bbuuttttoonnssFor switching to the respectiveinput modes.
PPAAGGEE UUPP//PPAAGGEEDDOOWWNN bbuuttttoonnssSame as the [Page Down] and[Page Up] keys on a computerkeyboard, when with the USBconnection (using a USB cableor the optional remote receiver).
PPOOIINNTTEERR bbuuttttoonnFor displaying thepointer.
MMOOUUSSEE//AAddjjuussttmmeennttbbuuttttoonnss (( // // // ))For moving thecomputer cursor when with the USBconnection (using a USB cable or theoptional remote receiver).For selecting and adjusting menuitems.
LL--CCLLIICCKK//EEFFFFEECCTTbbuuttttoonnFor the Left clickwhen with the USB connection(using a USB cable or the optionalremote receiver).For changing the pointer or spotarea.
KKEEYYSSTTOONNEE bbuuttttoonnFor entering theKeystone Correction mode.
AAUUTTOO SSYYNNCC bbuuttttoonnFor automaticallyadjusting images whenconnected to a computer.
EECCOO++QQUUIIEETT bbuuttttoonnFor lowering the noiseof the cooling fan andextending the lamp life.
AAVV MMUUTTEE bbuuttttoonnFor temporarilydisplaying a blackscreen and turning offthe sound.
FFRREEEEZZEE bbuuttttoonnFor freezing images.
VVOOLL ++//-- ((VVoolluummee))buttonsFor adjusting thespeaker sound level.
OONN bbuuttttoonnFor turning the poweron.
SSPPOOTT bbuuttttoonnFor displaying thespotlight.
RR--CCLLIICCKK//RREETTUURRNNbbuuttttoonnFor the Right click whenwith the USB connection(using a USB cable orthe optional remotereceiver).For returning to theprevious menu screenduring menuoperations.
EENNTTEERR bbuuttttoonnFor setting itemsselected or adjustedon the menu.
MMEENNUU//HHEELLPP bbuuttttoonnFor displayingadjustment and settingscreens, and helpscreen.
PPIICCTTUURREE MMOODDEEbbuuttttoonnFor selecting theappropriate picture.
RREESSIIZZEE bbuuttttoonnFor switching thepicture size (NORMAL,STRETCH, etc.).
MMAAGGNNIIFFYY bbuuttttoonnssFor enlarging/reducingpart of the image.1 4
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PG-D3750W
Inserting the Batteries
1 Pull down the tab on the cover and remove thecover towards the direction of the arrow.
2 Insert the batteries.Insert the batteries making sure the polarities correctly matchthe and marks inside the battery compartment.
3 Insert the lower tab of the cover into the opening,and lower the cover until it clicks in place.
Incorrect use of the batteries may cause them to leak or explode.Please follow the precautions below
CautionDanger of explosion if battery is incorrectly replaced.Replace only with alkaline or manganese batteries.Insert the batteries making sure the polarities correctly match the and marks inside the batterycompartment.Batteries of different types have different properties, therefore do not mix batteries of different types.Do not mix new and old batteries.This may shorten the life of new batteries or may cause old batteries to leak.Remove the batteries from the remote control once they have run out, as leaving them in can cause them to leak.Battery fluid from leaked batteries is harmful to skin, therefore ensure you wipe them first and thenremove them using a cloth.The batteries included with this projector may run down in a short period, depending on how they are kept.Be sure to replace them as soon as possible with new batteries.Remove the batteries from the remote control if you will not be using the remote control for a long time.Comply with the rules (ordinance) of each local government when disposing of worn-out batteries.
1
2
31 5
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PG-D3750W
Connecting Pin Assignments
COMPUTER/COMPONENT input and COMPUTER/COMPONENT output Terminals: miniD-sub 15 pin female connector
COMPUTER Input/Output COMPUTER Input/Output
Pin No. Signal Pin No. Signal
1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.
Video input (red)Video input (green/sync on green)Video input (blue)Not connectedNot connectedEarth (red)Earth (green/sync on green)Earth (blue)Not connectedGNDNot connectedBi-directional dataHorizontal sync signal: TTL levelVertical sync signal: TTL levelData clock
1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.
PR (CR)YPB (CB)Not connectedNot connectedEarth (PR)Earth (Y)Earth (PB)Not connectedNot connectedNot connectedNot connectedNot connectedNot connectedNot connected
HDMI Terminal
Pin No. Name Pin No. Name Pin No. Name
1234567
T.M.D.S data 2+T.M.D.S data 2 shieldT.M.D.S data 2T.M.D.S data 1+T.M.D.S data 1 shieldT.M.D.S data 1T.M.D.S data 0+
8910111213
T.M.D.S data 0 shieldT.M.D.S data 0T.M.D.S clock+T.M.D.S clock shieldT.M.D.S clockCEC
141516171819
ReservedSCLSDADDC/CEC ground+5V powerHot plug detection
510
15
1
11
6
119
2181 6
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PG-D3750W
RS-232C Terminal: D-sub 9 pin male connector
Pin No. Signal Name I/O Reference
1.2.3.4.5.6.7.8.9.
RDSD
SG
RSCS
Receive DataSend Data
Signal Ground
Request to SendClear to Send
InputOutput
Not connectedConnected to internal circuitConnected to internal circuitNot connectedConnected to internal circuitNot connectedConnected to CS in internal circuitConnected to RS in internal circuitNot connected
RS-232C Cable recommended connection: D-sub 9 pin female connector
Pin No. Signal Pin No. Signal
1.2.3.4.5.6.7.8.9.
CDRDSDERSGDRRSCSCI
1.2.3.4.5.6.7.8.9.
CDRDSDERSGDRRSCSCI
ProjectorPin No.
ComputerPin No.
456
456
USB Terminal: Type B USB connector LAN Terminal: LAN (RJ-45)
Pin No. Signal Name Pin No. Signal Pin No. Signal
1.2.3.4.
VCCUSBUSB+SG
USB powerUSB dataUSB data+Signal Ground
1.2.3.4.
TX+TXRX+
5.6.7.8.
RX
1 5
6 9
5 1
9 6
Note
Depending on the controlling device used, it may be necessary to connect Pin 4 and Pin 6 on thecontrolling device (e.g. computer).
Note
4 3
1 2
8 ... 1...
Connecting Pin Assignments1 7
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PG-D3750W[3] DIMENSIONS
Units: inches (mm)
M4M4
M4M4
1/4(6)
1313/64(335)
315/16(100)
143/64
(42.2)
417/32(115)
3 23/64(85)
4 17/32(115)
15 3/4 (400)1/8 (3)
11/2
(38)
333/64
(89)
649/64(171.5)
15/64 (5.75)1 13/16(45.75)
4 5/8(116.25)
2 61/64(75)
7 5/64(179.75)1 8
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PG-D3750W[4] Regarding the lamp
Regarding the Lamp
LampIt is recommended that the lamp (sold separately) be replaced when the remaining lamp life becomes5% or less, or when you notice a significant deterioration in the picture and color quality. The lamp life(percentage) can be checked with the on-screen display.Purchase a replacement lamp of type AN-D400LP from your place of purchase, nearest SharpAuthorized Projector Dealer or Service Center.
IMPORTANT NOTE TO U.S. CUSTOMERS:The lamp included with this projector is backed by a 90-day parts and labor limitedwarranty. All service of this projector under warranty, including lamp replacement,must be obtained through a Sharp Authorized Projector Dealer or Service Center.For the name of the nearest Sharp Authorized Projector Dealer or Service Center,please call toll-free: 1-888-GO-SHARP (1-888-467-4277).
Hg LAMP CONTAINS MERCURY For State Lamp DisposalInformationwww.lamprecycle.org or 1-800-BE-SHARP U.S.A ONLY
Caution Concerning the LampThis projector utilizes a pressurized mercury lamp. A loud sound may indicate lamp failure. Lamp failurecan be attributed to numerous sources such as: excessive shock, improper cooling, surface scratchesor deterioration of the lamp due to a lapse of usage time.The period of time up to failure largely varies depending on the individual lamp and/or the condition andthe frequency of use. It is important to note that failure can often result in the bulb cracking.When the lamp replacement indicator and on-screen display icon are illuminated, it is recommendedthat the lamp be replaced with a new one immediately, even if the lamp appears to be operatingnormally.Should the lamp break, there is also a possibility that glass particles may spread inside of the projector.In such a case, it is recommended you contact your nearest Sharp Authorized Projector Dealer orService Center to assure safe operation.Should the lamp break, the glass particles may spread inside the lamp cage or gas contained in thelamp may be vented into the room from the exhaust vent. Because the gas in this lamp includesmercury, ventilate the room well if the lamp breaks and avoid all exposure to the released gas. In case ofexposure to the gas, consult a doctor as soon as possible.
Replacing the Lamp
Caution
Do not remove the lamp unit from the projector right after use. The lamp will be very hot and may causeburns or injury.Wait at least one hour after the power cord is disconnected to allow the surface of the lamp unit to fullycool before removing the lamp unit.
Carefully change the lamp by following the instructions described in this section. * If youwish, you may have the lamp replaced at your nearest Sharp Authorized Projector Dealer or
Service Center.
* If the new lamp does not light after replacement, take your projector to the nearest Sharp Authorized ProjectorDealer or Service Center for repair.1 9
-
PG-D3750W
Regarding the Lamp (Continued)
Removing and Installing theLamp Unit
Warning!Do not remove the lamp unit from theprojector right after use. The lamp and partsaround the lamp will be very hot and maycause burns or injury.
Info
Do not touch the glass surface of the lampunit or the inside of the projector.
lamp, make sure you carefully follow thesteps below.Do not loosen other screws except for thelamp unit cover and lamp unit.
1 Press SSTANDBY/ON on theprojector or SSTANDBY on theremote control to put theprojector into standby mode.
2 Disconnect the power cord.Unplug the power cord from the ACsocket.Leave the lamp until it has fully cooleddown (about 1 hour).
3 Remove the lamp unit cover.Close the lens shutter. Loosen the userservice screw ( ) that secures the lampunit cover. Remove the lamp unit cover( ).
Lamp unitAN-D400LP
Optionalaccessory
1 STANDBY/ON button/
AC socket
2
3
User service screw(for lamp unit cover)
1
2
1
1
2
21 10
-
PG-D3750W
4 Remove the lamp unit.Loosen the securing screws from the lampunit. Hold the lamp unit and pull it in thedirection of the arrow. At this time, keepthe lamp unit horizontal and do not tilt it.
5 Insert the new lamp unit.Press the lamp unit firmly into the lamp unitcompartment. Fasten the securing screws.
6 Replace the lamp unit cover.Align the tab on the lamp unit cover( ) and place it while pressing the cover( ) to close it. Then tighten the userservice screw ( ) to secure the lamp unitcover.
Info
If the lamp unit and lamp unit coverare not correctly installed, the powerwill not turn on, even if the powercord is connected to the projector.
Resetting the Lamp Timer
Reset the lamp timer after replacing the lamp.
Info
Make sure to reset the lamp timer only whenreplacing the lamp. If you reset the lamp timerand continue to use the same lamp, this maycause the lamp to become damaged orexplode.
1 Connect the power cord andopen the lens shutter fully.Plug the power cord into the AC socket ofthe projector.
2 Reset the lamp timer.While simultaneously holding downMENU/HELP, ENTER and on theprojector, press STANDBY/ON on theprojector."LAMP 0000H" is displayed, indicatingthat the lamp timer is reset.
4Securing screws
5
6
AC socket
1
ENTER button
MENU/HELPbutton
button
STANDBY/ONbutton2
2
1
31 11
-
PG-D3750WPGD3750W Service Manual CHAPTER 2. REMOVING OF MAJOR PARTS
[1] Removing the top Body1. Shift the Lens Cover Assy to the arrow direction.
2. Remove the 2 lock screws , 6 lock screws , and 1 lock screw .
1
2 3 4
Lens Cover Ass'y1
Bottom Body Ass'y
4
3
22 1
-
PG-D3750W
3. Match the Lens Cover Assy with the line of the Bottom Body Assy.
4. Push the of the Bottom Body Assy and Top Body Assy, then remove the Front Body Assy .
5. Push the of the Bottom Body Assy, then remove the Top Body Assy .
1
2 3
4 5
Lens Cover Ass'y 1
2Bottom Body Ass'y
Push
5
3
Top Body Ass'y
Front Body Ass'y
Bottom Body Ass'y
4Push
4Push
2 Push
2 Push
2 Push2 2
-
PG-D3750W[2] Removing the MAIN Unit1. Remove the 1 lock screw , 2 lock screws and 9 lock screws .
2. Disconnect all the connectors from MAIN Unit .
1 2 3
4
MAIN Unit 4
Bottom Body Ass'y
3
[RCF]
[TAN]
[LF] [CW][MO]
[TH][FC]
[EB][EA][FB]
[FA][SP]
2
12 3
-
PG-D3750W[3] Removing the Speaker Ass'y and TERMINAL Unit 1. Remove the 4 lock screws and detach the 2 Speaker Assy .
2. Remove the 4 lock screws and detach the Shield .
3. Remove the 3 lock screws and detach the TERMINAL Unit .
1 2
3 4
5 6
Speaker Ass'y 2
Shield 4
Speaker Ass'y2
TERMINAL Unit6
Bottom Body Ass'y
5
3
1
1
[TAN]2 4
-
PG-D3750W[4] Removing the EX-Duct Unit and Optical Mechanism Unit1. Remove the 2 lock screws and detach the EX-Duct Unit .
2. Remove the 2 lock screws and detach the Fixing Metal .
3. Remove the 7 lock screws , disconnect the connector Lamp Lead Socket, and detach the Optical Mechanism Unit .
1 2
3 4
5 6
Bottom Body Ass'y
EX-Duct Unit 2
Fixing Metal 4
1
3
5
OpticalMechanism Unit
Lamp Lead Socket
62 5
-
PG-D3750W[5] Removing the Duct and Fan1. Remove the 1 lock screw and detach the Bimetal .
2. Remove the 2 lock screws and detach the shield .
3. Detach the Duct and .
4. Remove the 2 lock screws and detach the Fan .
1 2
3 4
5 6
7 8
Optical Mechanism Unit
Bimetal 2
Shield 4
Duct 6
Fan 8
Duct 5
1
7
32 6
-
PG-D3750W[6] Removing the POWER/BALLAST Ass'y Unit and R/C RECEIVER Unit1. Remove the 4 lock screws and detach the POWER/BALLAST Assy Unit .
2. Disconnect the connector RCF and detach the R/C RECIEVER Unit .
1 2
3
1
POWER/BALLASTAss'y Unit
2
R/C RECEIVER Unit 3 Bottom Body Ass'y
[RCF]2 7
-
PG-D3750W[7] Removing the Fan Unit and POWER Unit and BALLAST/BALLAST CONTROL Ass'y Unit1. Remove the 2 lock screws and detach the Fan Unit .
2. Remove the 5 lock screws and detach the POWER Unit and Holder .
3. Disconnect the connectors PB and EB.
4. remove the 4 holders , and detach the BALLAST/BALLAST CONTROL Assy Unit .
1 2
3 4 5
6 7
3
POWER Unit 4
Holder5
BALLAST/BALLAST CONTROLAss'y Unit
7
Shield
Fan Unit 2
Holder 6
1
Holder 6
[PB]
[EB]
[EA]2 8
-
PG-D3750WPGD3750W Service Manual CHAPTER 3. THE OPTICAL UNIT OUTLINE
[1] THE OPTICAL UNIT OUTLINE1. Layout for proper setup of the optical components and parts (top view)
(Schematic diagram)
Item FunctionLamp Light source. DC high-pressure mercury lamp.UV/IR cut filter (UV GLASS) Filters out harmful UV and IR rays from the lamp.Color wheel Splits light from the light source into R, G, B and W through a color filter.Rod (ROD INTEGRATOR) Assures uniform light ray.L1, L2 Focus light from the rod on DMD.M1 Reflects light from the illumination lenses toward DMD.L3 Condenses the light from the reflection mirror to the DMD and the pupil of the projection lens.DMD Turns the internal micromirror ON/OFF at the rate of color component of each dot of the input source
to reflect light.Projection lens Enlarges light from DMD and projects it on a screen.3 1
-
PG-D3750W2. When the DMD unit has been replaced.
If shading shown in Figure 1 appears on the screen after replacing DMD, turn the adjustment screw of the optical engine to adjust the lighting area ofDMD.
CAUTION: Please promptly adjust 2-1) when there is a shadow like Figure 1 after it lights
and remove the shadow.
1) Loosen the adjustment lever fixing screw . After adjusting the lighting area with the adjustment lever , tighten the adjustment lever fixing
screw .
2) When mounting DMD, tighten the 4 screws evenly.
Fig. 1
Shading
1 2
1
Tightening order: 1 2 3 4Screw torque: 0.44 0.05 Nm3 2
-
PG-D3750WPGD3750W Service Manual CHAPTER 4. ELECTRICAL ADJUSTMENT
[1] ELECTRICAL ADJUSTMENT
No. Adjusting point Adjusting conditions Adjusting procedure1 Initialization of EEPROM 1. Turn on the power (lamp on state), and
execute aging for 15 minutes.1. Make the following settings. Press S2551 to enter the process mode, and execute SS2 in the SS menu.
2 Model setting (Process menu)1. Select the following items. Group: CONFIRM Adjustment item: MODEL
1. WXGA series MODEL0 ... PG-D3750W (Initial value)
3 CW index adjustment 1. Signal input: Feed the 256 STEP color bar. WXGA model: XGA 60Hz2. Select the following items. Group: ADJUST CW/AutoKS Adjustment item: CW-INDEX
1. Feed the signal to the COMPUTER terminal.2. Select the adjustment item, and adjust the lamp patterns of R, G, B, and W so that they become smooth with no color mixture or noise.
4 R/G/B contrast adjustment (Manual or automatic adjust-ment)
1. Select the following items. Group: ADJUST AD/DLP Adjustment item: R-CONT G-CONT B-CONT (Process gamma interlock)2. Feed the white signal of amplitude level 96% (0.67 Vpp) to the Computer terminal. WXGA model: XGA 60Hz
1. Observe the chromaticity value of the 96% white wind pattern using CA100.2. In the screen of bit error, increase the R/G/B-Contrast value, and make adjustment so that the bit error is caused in each of black to bright red, green and blue and the x value of R and the y value of G/B vary by more than 100/1000.3. If manually and visually adjust the screen with bit error, make adjustment so that bright bit error of each color appears in more than half of the screen.
5 RGB white balance adjustment 1. Feed the 50% gray pattern signal to the Computer terminal. WXGA model: XGA 60Hz2. Select the following items. Group: ADJUST AD/DLP Adjustment item: R-GAIN G-GAIN B-GAIN
1. Make adjustment so that the following chromaticity values are obtained using CL200 by increasing the adjustment values of the 2 items in R/G/B-GAIN from the initial value of 100. x value: 3025 y value: 3235
6 sRGB white balance adjust-ment
1. Feed the 50% gray pattern signal to the Computer terminal. WXGA model: XGA 60Hz2. Select the following items. Group: CONFIRM/DLP Adjustment item: S-G-OS S-B-OS
1. Adjust S-G-OS and S-B-OS so that the following chromaticity values are obtained using CL200. x value: 3135 y value: 3295
* Also check that the intensity of the colorsincluding magenta appearing especially incertain W gradation is minimized.
R
G
B
W4 1
-
PG-D3750WPoint to be checked
No. Adjusting point Adjusting conditions Adjusting procedure1 R/G/B brightness adjustment 1. Select the following items.
Group: CONFIRM/AD Adjustment item: R-BRIGHT G-BRIGHT B-BRIGHT (Process gamma interlock)
1. Check the fixed value. Fixed value: 125
2 Component offset adjustment 1. Feed the 10-step signal of 480P component 100% amplitude.2. Select the following items. Group: CONFIRM/AD Adjustment item: C-R-OS C-B-OS (Process gamma interlock)
1. Check the fixed values. C-R-OS: 258 C-B-OS: 258
3 DLP brightness adjustment 1. Select the following items. Group: CONFIRM/DLP Adjustment item: R-BLK G-BLK B-BLK (Process gamma interlock)
1. Check the fixed value. Fixed value: 252
3-2 Component white balance adjust-ment
1. Feed the 50% gray pattern signal.2. Select the following items. Group: CONFIRM/DLP Adjustment item: C-R-OS C-G-OS C-B-OS
1. Check the fixed values. C-R-OS: 125 C-G-OS: 123 C-B-OS: 135
4 Video contrast adjustment 1. Feed the NTSC100% wind pattern signal. (Signal with burst)2. Select the following items. Group: CONFIRM/VIDEO Adjustment item: V-CONT
1. Check the fixed value. Fixed value: 134
5 Video brightness adjustment 1. Feed the NTSC100% wind pattern signal. (Signal with burst)2. Select the following items. Group: CONFIRM/VIDEO Adjustment item: V-BRIGHT
1. Check the fixed value. Fixed value: 68
6 Video TINT adjustment 1. Feed the internal 8CH (split color bar).2. Select the following items. Group: CONFIRM/VIDEO Adjustment item: V-HUE
1. Check the fixed value. Fixed value: 128
7 Video color saturation adjustment 1. Select the following items. Group: CONFIRM/VIDEO Adjustment item: V-COLOR
1. Check the fixed value. Fixed value: 127
8 RGB gradation reproduction adjustment
1. Feed the SMPTE pattern. 1. Check that the gradations of white 100% and 95% and black 0% and 5% are observed.
9 Video white balance adjustment 1. Feed the 50% gray pattern signal.2. Select the following items. Group: CONFIRM/VIDEO Adjustment item: V-R-OS V-G-OS V-B-OS
1. Check the fixed values. V-R-OS: 125 V-G-OS: 123 V-B-OS: 135
10 Check and readjustment of white balance
1. RGB input, sRGB input, video input, DTV input, and DVD input
1. Check that there is no difference in white balance compared to the monitor.
11 Off-timer operation check 1. Select the following items. Group: CONFIRM/CHECK Adjustment item: TEMP-OFF
1. Check that the off-timer starts counting from 5 minutes and 1 minute is counted as 1 second and the unit is turned off when displaying 0 minutes.
12 Thermistor operation check 1. Heat the thermistor with a dryer. 1. Check that TEMP is displayed.4 2
-
PG-D3750W
* Software writing procedure (Using the main PWB only)
Download the firmware using DLP Composer Lite Version 7.0 or later.
The writing software writes the firmware of the specified version and checks the version of the firmware written through RS232C.
Calling and quitting the process mode with the control keys on this model.* Although it is possible for the process OUT to exit using the process menu, the IN/OUT toggle command is also available considering the existing
specification.
1) Calling and quitting
With the menu not displayed, press the ENTER, ENTER, VOL+, VOL-, ENTER, ENTER and MENU keys on the remote control (one forC50/45 or P25/20 system is also usable) or on the main unit.
2) Others
Press the S2551 process key (toggle) on the main PWB to call and quit the process menu.
NOTE: When adjusting in the process mode, set a signal with a vertical frequency of 60 Hz or no signal. (May not be properly adjusted with other sig-nals.)
Resetting the lamp timer for this model1) Resetting procedure
In Stand-by, run this command to clear the operating time of the lamp to 0 and turn on the power.
Press and hold , ENTER, and MENU, and then press the STANDBY/ON key of the set.
Forced disabling of the System-Lock of this model1) Disabling procedure
With System-Lock input window onscreen, press the MENU, ENTER, ENTER, MENU, ENTER, ENTER and MENU keys, in this order,on the remote controller.
13 Auto-sync operation 1. Receive the phase check pattern. 1. In the VGA/SVGA/XGA/SXGA/UXGA/WXGA mode, check that Clock, Phase, H-POS, and V-POS can be adjusted automatically.
15 Check of MONITOR output and AUDIO output
1. Feed the analog video signal to the COMPUTER and DVI-I terminals, and the audio signal to the AUDIO1 and AUDIO2 terminals.2. Connect another monitor to the MONITOR OUT terminal.3. Connect the AUDIO OUT terminal.
1. Check that the same image is displayed on the connected monitor as that displayed on the screen, and the selected sound is sent from the audio OUT.
16 RS232C operation check 1. Connect to the PC with an RS232C cable. 1. Check that the unit operates correctly by transmitting the command from the PC.
17 USB operation check 1. Connect to the PC with a USB cable. 1. Check that the page up/down on the remote control functions.
18 LAN operation check 1. Connect to the PC with a LAN cable. 1. Check that communication is possible.19 HDMI input operation check 1. Feed the video signal and audio signal to the
HDMI terminal.1. Check that the image is projected correctly and the sound is heard from the speakers.2. Check that the HDCP authentication is possible.
20 Check of model name and version 1. Select the following item. Group: INFO/VERSION
1. Check that the name of the relevant device is shown in MODEL and the firmware version correctly appears in VERSION.
22 Factory setting 1. Factory setting1. Make the following settings.
No. Adjusting point Adjusting conditions Adjusting procedure
DestinationProcess Remote control
adjustment adjustment
USA SS4 Factory setting at 4
Europe and regions other than thefollowing
SS3 Factory setting at 3
China SS6 Factory setting at 64 3
-
PG-D3750W[2] Adjustment mode process menu
1st Layer 2nd Layer DefaultADJUST CW/Auto KS CW-INDEX 30
CALK-SENS (0)
AD/DLP R-CONT 110G-CONT 110B-CONT 110R-GAIN 100G-GAIN 100B-GAIN 100
SS SS1 SS2 SS3 SS4 SS5 SS6
CONFIRM AD R-BRIGHT 125G-BRIGHT 125B-BRIGHT 125C-R-OS 258C-B-OS 258
DLP R-BLK 252G-BLK 252B-BLK 252S-R-OS 128S-G-OS 128S-B-OS 128C-R-OS 125C-G-OS 123C-B-OS 135
VIDEO V-CONT 134V-BRIGHT 68V-COLOR 127V-HUE 128V-R-OS 125V-G-OS 123V-B-OS 135OFFSET-MODE 0OFFSET-CONT 0OFFSET-BRI 0
MODEL MODEL-SELECT 0CHECK LED-CHK 0
TEMP-OFF INFO VERSION MODEL
VER. PATTERN RGB 1
RGB50 1CORSS 1STEP 1COLOR 1CHR 1
LAMP CURRENT 0HISTORY1 0HISTORY2 0HISTORY3 0HISTORY4 0TOTAL 0
TEMP/FAN TEMP1 TEMP2 FAN0 3FAN1 3FAN2 3
1st Layer 2nd Layer DefaultOTHER SPECIAL USB-MODE 0
HDCP-MODE 0PULSE-MODE 0
EDID EEP-SELECT 1EEP-WP 0
EXIT4 4
-
PG-D3750W1. Ballast unit output power (lamp power) adjustment1. List of the parts to be adjusted
After replacing the following parts, adjust the ballast unit output power (lamp power).
2. Adjustment method of the ballast unit output power (lamp power)
Adjust the ballast unit output power (lamp power) in the following way.
[Adjustment method]
Make adjustment so that the resistance value of both ends of the volume resistor (R7722) on the ballast control PWB (DUNTKE934WEF*)reaches the following value.
Adjustment value: 3.60.2k
[Adjustment point]
Ballast control PWB (DUNTKE934WEF*) wiring diagram
Part name Ref No. Part code1 Cement resistor R950 RR-WZA015WJZZ2 Ballast Control PWB DUNTKE934WEF03 Ballast microprocessor IC7707 RH-iXC630WJZZQ4 5V regulator IC7704 VHiTA78L05F-1Y5 PWM controller IC7701 VHiM51995AF-1Y
C7718
1000P
R7733
4.7K
R7735
2.2K
C7717
1000P
R7722
M4555CE10K
R7842
6.8K
C7761
330P
R78556.8K
C7712
220P
NJM2902V
1 2 3 4
VCC
5 6 7
891011
GND
121314
R7776
1K
TP7738
TP774
R77211K
D
R7720
22K D
R77291.5K D
IC77034 5
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PG-D3750WPGD3750W Service Manual CHAPTER 5. TROUBLESHOOTING TABLE
[1] TROUBLESHOOTING TABLE
Checking the basic operation
Does the power LED light up or flash in red or green?
NO Has P1701 come off or is it loose? YES Fully insert the connector.
YES NODoes the set function with its keys or the remote controller?
NO Go to Main PWB check.
YESLamp does not turn on or it turns off in a short time.
YES Go to Checking the lamp light-up.
NONothing is displayed or white vertical line noise appears.
YES Go to DMD system check.
NOColors are not displayed normally.Color deviation and color fluctuation occur.
YES Check PHOTO SENSOR circuit.
NOAre RGB and component input displayed normally?
NO Go to RGB and component signal check.
YESIs VIDEO input displayed normally? NO Go to VIDEO input check.
YESIs S-VIDEO input displayed normally? NO Go to S-VIDEO input check.
YESEND5 1
-
PG-D3750W
Main PWB check
Is 12.8 V applied to TL1703? NO Go to Power supply ballast PWB check.
YESIs approx. 5.5 V applied to TL1702? NO Go to Power supply ballast PWB check.
YESIs 12.5 V applied to TL3819? NO Check IC3808 and Q3805 and peripheral circuits.
YESIs 1.2 V applied to TL3813? NO Check Q3802 and peripheral circuits.
YESIs 3.3 V applied to TL3802? NO Check L3801 and peripheral circuits.
YESIs 2.5 V applied to TL3801? NO Check L3802 and peripheral circuits.
YESIs 5 V applied to TL3814? NO Check L3806 and peripheral circuits.
YESIs 3.3 V applied to TL1792? NO Check IC1792 and peripheral circuits.
YESIs 12 V applied to TL1761? NO Check IC1761 and peripheral circuits.
YESIs 1.8 V applied to TL3809? NO Check IC3803 and peripheral circuits.
YESIs 1.2 V applied to TL3811? NO Check Q3801 and peripheral circuits.
YESIs 2.8 V applied to TL3807? NO Check IC3807 and IC3802 and peripheral circuits.
YESIs 2.8 V applied to TL3808? NO Check IC3802 and peripheral circuits.
YESIs 3.3 V applied to TL2051? NO Check that it is set to the NORMAL side. Or remove S2001.
YESIs rectangular wave of 20 MHz applied to TL2201? NO Check X2201 and IC2204 and peripheral circuits.
YESCheck IC2001, IC2262, IC2232 and peripheral circuits.5 2
-
PG-D3750W
DMD system check
Check P2501 for breakage and solder crack and peripheral resis-tance for solder crack.
Check SC9101 on the DMD PWB for breakage and solder crack.
Is there any vertical stripe (block noise) on the Screen? YES The main PWB and DMD PWB are in poor contact.
Check the contact surface for dirt and smear.Check the DMD connector for breakage.Reassemble the DMD, optical mechanism, and DMD PWB.
NOIs the screen all black?
NO
YESIs 12.5 V applied to IC3803 pin (2) and 1.8 V to TL3809?
NO Check IC3803, IC2205, and their peripheral circuits.
YESIs 400 MHz on IC2201 pin (26) and pin (27)? NO Check IC2201 and peripheral circuits.
YESIs 320 MHz on IC2204 pin (13) and pin (14)? NO Check IC2204 and peripheral circuits.
YES
Is approx. 8 V applied to TL9303 on the DMD PWB? NO
YES
Is approx. 26 V applied to TL9301 on the DMD PWB? NO Check IC9301 and peripheral circuits.
YES
NOIs approx. -26 V applied to TL9302 on the DMD PWB?
YESThe main PWB and DMD PWB are in poor contact.Check the contact surface for dirt and smear.Check the DMD connector for breakage.Reassemble the DMD, optical mechanism, and DMD PWB.5 3
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PG-D3750W
Power supply PWB check
Is 13 V applied to pins (3) and (4) of the connector P704?
NO
YESDoes the lamp turn on? YES Check the main PWB.
NOAre connectors P704 and CN901 fully inserted?
NO Securely insert the connectors.
YESIs DC voltage of 380 V applied to both ends of C740?
NO Is pin (10) of the connector P704 at H?
NO Check the main PWB.
YES
YESCheck peripheral circuits of IC707.
Is F705 in the OPEN status? NO Is LAMP-EN/SYNC signal properly sent to pin (4) of the connector P7702?
(Refer to the waveform chart .)
NO Check the main PWB.
YES YESCheck circuits F705 and after or replace F705.
Are GATE waveforms of Q901 appro-priate?
(See waveform diagram .)
NO Check the ballast PWB.
Are connectors P701 and P702 fully inserted?
NO Securely insert the connectors.
YESIs AC voltage between 100 - 240 V applied to both ends of C702?
NO Replace F701 or F702.
YESIs the bimetal broken?(Connection between 1 and 2 of P702)
NO Press the red button on the bimetal.
YESIs R729 open? NO Is F704 open? NO Check peripheral circuits of IC704.
YES YESCheck that P704 connector pin (10) is at H. Replace R729.
Replace F704.Check that the power supply FAN FB and FC are not stopped.
1
1
6
15 4
-
PG-D3750W
Checking the lamp light-up
Does the lamp turn on when the power is turned on?
YES Go to Check when the lamp turns off soon after turning on.
NOIs the lamp tight in the socket? YES Securely insert the connectors.
NOHas the FPC cable to SC3801 come off or is it loose?
YES Securely insert the connectors.
NOIs rotating sound of the color wheel heard?
NO Check IC3802 and peripheral circuits.
(Refer to the waveform chart .)
YES Replace the color wheel.
YESIs approx. 0.7 V applied to TL1706? NO Check IC1701 and peripheral
circuits.
(Refer to the waveform chart .)
YESHas the harness connected to P702 on the power supply unit come off, or is it loose?Otherwise, is it broken?
YES Fully insert the connectors or replace the harnesses.
NODose the lamp turn on after the replacement?
YES Replace the lamp.
NOIs 340 V DC applied to both ends of C917?
NO Go to Power supply PWB check.
YESIs D907 or D908 short-circuited? YES Replace D907 or D908.
NOIs D906 or D910 short-circuited? YES Replace D906 or D910, whichever is
short-circuited.
2
15 5
-
PG-D3750W
Check when the lamp turns off soon after turning on
Have connectors P1703, P1721, P1706 and P1723 come off or are they loose?
YES Securely insert the connectors.
NOIs each cooling fan rotating? NO Check the cooling fan.
YESThe lamp light-up. After about 30 sec-onds, the TEMP LED flash red and the lamp turn off.
YES Check the TEMP1 and TEMP0 signal line.
NOIs approx. 3 V applied to TL1721? NO Check peripheral circuits of Q1721.
YESIs 12 V applied to TL1761? NO Check IC1761, IC3802 and peripheral
circuits.Go to DMD system check.
YESIs 2.5 V applied to TL3801? NO Is 3.3 V applied to TL3802? YES Check L3802 and peripheral
circuits.
YES
NOCheck L3801 and peripheral circuits.
Is 5 V applied to TL3814? NO Check L3806 and peripheral circuits.
YESIs 5 V applied to TL1712? NO Is 5 V applied to TL1712 with P1703
removed?NO Check connection of FB1710 and
R3849.
YES YESIs the signal of 180 Hz sent to TL1716? (When vertical frequency of the input signal is 60 Hz)
NO Check PHOTO SENSOR PWB.
YESIs the signal of 180 Hz sent to TL1706? (When vertical frequency of the input signal is 60 Hz)
NO Check IC1701 and peripheral circuits.
YESCheck the power supply ballast PWB.5 6
-
PG-D3750W
RGB DVI-Analog and component signal check
Send component signal or RGB signal of 1080i (or 720P) from COMPUTER/COMPONENT Terminal or DVI-I Terminal.Select COMPUTER or DVI-Analog using keys on the main unit or the remote control.
YESIs image displayed normally? YES End
NOAre picture signals sent to TL3201, TL3229, TL3230, TL3231, TL3232, and TL3233?
NO Check IC3001 and the peripheral circuits.
YESIs 3.3V applied to TL1792? NO Check IC1792 and peripheral circuits.
YESIs 3.3V applied to TL3802? NO Check IC3802 and peripheral circuits.
YESCheck IC3201 and peripheral circuits.
DVI digital input check
Send the DVI digital signal to the DVI-I Terminal.Select DVI-D Computer using the keys on the main unit or the remote controller.
Does an image appear properly? YES End
NOIs the DVI signal supplied to R3231, R3232, R3233, R3234, R3235, R3236, R3237 and R3238?
NO Check DVI-I Terminal, L2801, L2802, L2803, L2804, D2803, D2804 and peripheral circuits.
YESIs 3.3V applied to TL1792? NO Check IC1792 and peripheral circuits.
YESIs 3.3V applied to TL3802? NO Check IC3802 and peripheral circuits.
YESCheck IC3201 and peripheral circuits.5 7
-
PG-D3750W
S-VIDEO check
Send S-Video signal (color signal) from S-Video Terminal. Select S-Video using keys on the main unit or the remote control.
Is image displayed normally? YES End
NOIs image displayed in black and white? YES Check S-VIDEO terminal and peripheral circuits of Q3311.
NOIs S-VIDEO signal (Y) sent to R3305? NO Check S-VIDEO terminal and peripheral circuits of Q3301.
YESIs 1.8 V applied to TL3358? NO Check IC3352 and peripheral circuits.
YESIs 3.3 V applied to TL1792? NO Check IC1792 and peripheral circuits.
YESIs 3.3 V applied to TL3802? NO Check IC3802 and peripheral circuits.
YESCheck IC3351 and peripheral circuits.
VIDEO check
Send VIDEO signal from VIDEO Terminal. Use buttons on the main unit or the remote control to select VIDEO.
Is image displayed normally? YES End
NOIs VIDEO signal sent to C3326? NO Check VIDEO terminal and peripheral circuits of Q3321.
YESIs 1.8 V applied to TL3358? NO Check IC3352 and peripheral circuits.
YESIs 3.3 V applied to TL1792? NO Check IC1792 and peripheral circuits.
YESIs 3.3 V applied to TL3802? NO Check IC3802 and peripheral circuits.
YESCheck IC3351 and peripheral circuits.5 8
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PG-D3750W
Checking the LAN
LAN communication is disabled even though connecting the con-trol PC with a LAN cable. The LINK LED (green) does not light up.
YESAre the connection of connecting cable and the settings of IP address, sub-net address and default gateway correct?
NO Check the connecting cable and LAN settings. If the LAN set-tings are unknown, contact the network administrator. If the network settings cannot be saved, replace IC8003 (EEPROM) as it may be defective.
YESNOTE: When IC8003 (EEPROM) is replaced, the MAC address
returns to default. Refer to Resetting after replacing IC8003 (EEPROM) to reset.
Are the network device (e.g. Hub) between the control PC and cable normal?
NO Repair defective parts in the network.
YESWhen data is sent from the control PC, do pins (30) and (31) of IC8201 (PHY receiver) receive signals?
NO Check the peripheral circuit of J8201 (RJ-45 jack with built-in transformer).
YESCheck the PHY receiver IC8201 and the peripheral circuits of the microprocessor IC8001.5 9
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PG-D3750WPGD3750W Service Manual CHAPTER 6. MAJOR IC INFORMATION
[1] MAJOR IC INFORMATION
1. Resetting after replacing IC8003 (EEPROM) or MAIN PWB UnitMAC address returns to default. Follow the steps below to reset.
MAC address setting
1 Open the top cabinet of the projector and confirm the MAC address (MAC: ************) of the seal on the PWB.
2 Connect the control PC and projector with a RS-232C cable.
3 Turn on the AC power supply.
4 EEPROM returns to default.
5 Turn off the AC power supply and turn on again.
6 Set MAC address by using the RS-232C command. (Refer to "MAC address setting" for the setting procedure.)
7 Enter and check the response.
Check that it is the same as the set MAC address.
8 Setting is completed.
RS-232C commands to be used
*1 1st byte of the MAC address *2 2nd byte of the MAC address
*3 3rd byte of the MAC address *4 4th byte of the MAC address
*5 5th byte of the MAC address *6 6th byte of the MAC address
*7 7th byte of the MAC address *8 8th byte of the MAC address
*9 9th byte of the MAC address *10 10th byte of the MAC address
*11 11th byte of the MAC address *12 12th byte of the MAC address
1 Enter and [*2], and press "ENTER".
Responds "OK".
2 Enter and [*2], and press "ENTER".
Responds "OK".
3 Enter and [*2], and press "ENTER".
Responds "OK".
4 Enter and [*2], and press "ENTER".
Responds "OK".
5 Enter and [*2], and press "ENTER".
Responds "OK".-
6 Enter and [*2], and press "ENTER".
MAC address setting is completed.6 1
-
PG-D3750W2. Resetting after replacing IC2801 and or IC2803 (EDID EEPROM)
1 Enter and [*2], and press "ENTER".
Responds "OK".
2 Enter and [*2], and press "ENTER".
Responds "OK".
3 Enter and [*2], and press "ENTER".
Responds "OK".
4 Confirm EDID Read/Write using the RS-232C command.Enter "_ E D C _ _ _ 1" for checking IC2801.Enter "_ E D C _ _ _ 2" for checking IC2803.If response is "OK" no problem.If response is "ERR" same hardware issues.
5 Set EDID year data.See "Check and setting of EDID year data". (P. 4-3)
6 Do factory setting. (See Chapter 4. [1] - No.21 (P. 4-3))6 2
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PG-D3750WPGD3750W Service Manual CHAPTER 7. BLOCK DIAGRAM/OVERALL WIRING DIAGRAM
[1] BLOCK DIAGRAM
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BLOCK DIAGRAM
R8C micon TEMP1_AD
IC3564
DLPTM
Data Processor
DDP2230
ASIC
RH-IXB998WJ
IC2001
MST3365C
A/D
Amp
PLL
TMDS
IC3201
E2PROM
64k
IC2261
Samsung
XDRDRAM
K4Y508BE
512Mbit
3.2GHz
IC2205400MHz
for XDR
DQP[7:0],DQN[7:0]
Clock Generator
CDCDLP5704
IC2201
CFM/CFMN(400MHz)
RQ[11:0]
MAD[20:1]
RS-232C
AUDIO
Audio ControlAudio Out SWLV4052FT
IC3504
BD3490FY
IC3502
Comparator
IC1101
Digital
Video
Decoder
TVP5146M
IC3351
CWINDEX
KO[3:1]
FANLOCK
LVDS / DDA_P(8),DDA_N(8),DCLKA_P,DCLKA_N,SCTRLA_P,SCTRLA_N
DDB_P(8),DDB_N(8),,DCLKB_P,DCLKB_N,SCTRLB_P,SCTRLB_N
MBRST[15:0]
DAD2000
AnalogASIC
IC9301RH-IXC119WJ
Computer1
HDMI
SCL,SDA
SCL,SDA
R,G,B
H,V
H.V
EDID
EDID
EDID5V
Video(RCA)
SDRAM
IXC615WJ
IC2232
MD[15:0]
SCL,SDA
VCC2
SCL,SDA
N-LIGHT
OUT
CMD/RST/SCK/SRD
20MHz/for system
R/C
LCH
CLK,DI,DO,CS0,
CS1,CS2
CONTROL(10),INTDMD
LVDSx2
RESET
RCH
H,VSOUT
DATACK
ROUT[8:0]GOUT[8:0]
BOUT[8:0]
VY[9:1]VCLK
FLOE
CS0
AD
SOG
X'tal
14.3MHz KII[5:1]
V_PDWN,V_RES
SEL
PF_CON
LAMP_CON
Leaf SW
LENS SHUTTER
SW
RCS
(5)
Bus
Sound
PWM
S-Video(S)
Audio AMP
YDA147SZ
IC1301
Audio SW
NJM2750M
IC3505
EDID
E2PROM
IC3051
EDID5V
EDID
H,V
R,G,B
SYNC SW
LCX157MT
SOG SW
IC8202
IC3152
RGB AMP
EL8302IUIC3001IC3002
R,G,B
H,V
Computer2(15pin D-sub)
Monitor OUT(15pin)Level
Converter
VHCT125A
IC3101
I/O
PCA9557P
IC3353
ECO
RGB
RGB0
RGB1
SELOUT
DIS
SP_MUTE
RS232C DRIVER
M3221EIP
RMC1501R/C
RxD1/TxD1
Photo Sensor
IC1102
N/F PFCPSU
LAMP
BIMETAL
R,G,B
PWM IXC630WJ
DC-DC Converter Low Voltage Starter
TMDS 0/1/2/3
CEC
EDID
IC3007E2PROM
EDID
IC2801E2PROM
FLASH
IXC764 WJ
64Mbit
Audio
CODEC
IC3501
IC2262
CWCTR
CWY1/2/3
CWPWM
USB
ThermistorTEMP2_AD
LENS SHUTTER
USB
320MHz/for LVDS
100MHzClock Synthesizer
CCDLP223
IC2204
ALFH,ALFV
DE
VY0POWERGOOD
POSENSE PMD1000Regulator
Motor Driver
Fan control
IC3802
RH-IXB689WJ
X'tal
20MHz
FAN CTRL
Q1722
Q1723
Q1724
UART SWLV4052
IC4012
AUDIO-OUT (3.5 )
AUDIO-IN (3.5 )
Audio SW
LVC2G53P
IC3503
AUDIO-IN (RCA L,R)
CVBS
Y/C
Power unit Ballast unit
Main unit
EB
EB
EA
EA
B+13V, B+6V, B+12V, AUDIO
LED
STANDBY(G/R)
LAMP(G/R)
TEMP.(R)
KEY
Port2
Port1
GPIO
Input CTL
Port 0
I2C BUS Host
Memory
USB
UART1
XDR IF
DMD
SR16
SSP0
IR0
GPIO
LAMP FAN
EXHAUST FAN / POWER
Color Wheel
EXHAUST FAN
SENSOR UNIT
RC UNIT
R/C
RMCA071
DMD UNIT
TH2
LF
FA
FB
FC
MO
CW
CW
RCF
RC
IN-LET
LAN(RJ45)
PHY
RTL8201DLAN control
SH2
SDRAM
IXC615WJ
FLASH
IXC765WJ
UART0
FAO/VAO
AOUT_MUTE
X'tal
25MHzX'tal
24.576MHz
X'tal
12.288MHz
TAN unit
SCL,SDA
Thermistor
TH3501
MIX
AHC1G08W
IC1704
SPDIF07 1
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PG-D3750W[2] OVERALL WIRING DIAGRAM
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OVERALL WIRING DIAGRAM
1
2
3
L
N
P1703
N0363TA
CW
1 B+5VA-ON
2 CWINDEX
3 GND
P1101
N0363TA
CW
1B+5VA
2CWINDEX
3GND
241
GND
220V
3PT
4GND
5TMP
6VIN
7IL
8VL
9SCP
10
CST
11
P_SW
20
GND
21
N-LIGHT
22
ECO
23
LAMP
P3562
N0363TA
TH2
13.3V
2TEMP1
3NC
P702N0269GE
BB1
BB2
P1121 N0458RERC
1 B+5VA
2 R/C
3 GND
4 NC
P2501 ZA027WJ
1 GND 2GND
3 B+3.3VD 4B+3.3VD
5 B+3.3VD 6B+3.3VD
7 GND 8GND
9 DDB_P1 10GND
11 DDB_N1 12GND
13 DDB_P3 14GND
15 DDB_N3 16GND
17 DDB_P5 18GND
19 DDB_N5 20GND
21 DDB_P7 22GND
23 DDB_N7 24GND
25 DCLKB_P 26GND
27 DCLKB_N 28GND
29 SCTRLB_P 30GND
31 SCTRLB_N 32GND
33 DDB_P9 34GND
35 DDB_N9 36GND
37 DDB_P11 38GND
39 DDB_N11 40GND
41 DDB_P13 42GND
43 DDB_N13 44GND
45 DDB_P15 46GND
47 DDB_N15 48GND
49 GND 50GND
51 DDA_P15 52GND
53 DDA_N15 54GND
55 DDA_P13 56GND
57 DDA_N13 58GND
59 DDA_P11 60GND
61 DDA_N11 62GND
63 DDA_P9 64GND
65 DDA_N9 66GND
67 DCLKA_P 68GND
69 DCLKA_N 70GND
71 SCTRLA_P 72CHECK 1
73 SCTRLA_N 74CHECK 0
75 DDA_P7 76GND
77 DDA_N7 78GND
79 DDA_P5 80EXT_ARSTZ
81 DDA_N5 82SSP0_CSZ1
83 DDA_P3 84SSP0_CSZ0
85 DDA_N3 86SSP0_RXD
87 DDA_P1 88SSP0_CLK
89 DDA_N1 90SSP0_TXD
91 GND 92GND
93 GND 94GND
95 DAD_MODE1 96DAD_SEL1
97 DAD_MODE0 98DAD_SEL0
99 DAD_STRB 100DAD_INTZ
101 DAD_OEZ 102GND
103 DAD_ADDR3 104GND
105 DAD_ADDR2 106TEMP0_AD
107 DAD_ADDR1 108GND
109 DAD_ADDR0 110B+3.3VA
111 GND 112GND
113 GND 114GND
115 B+12VDMD 116B+12VDMD
117 B+12VDMD 118B+12VDMD
119 GND 120GND
121
122
SC3801
WA500WJ
MO
1 CWY1
2 CWY2
3 CWY3
4 CWCTR
P1704 N0463TARC
1 B+5VA
2 R/C
3 GND
4 NC
P704
MA114WJ
1 GND 2GND
3 B+13V/12V_FMT 4B+13V/12V_FMT
5 GND 6GND
7 B+6V 8B+6V
9 POW_SEL/B+6V 10PFC-CON
11 GND(Audio) 12GND(Audio)
13 B+12V_Audio/13V 14B+12V_Audio/13V
P703
NB470WJ
To Ballast
1B+20V
2GND
4B+385V
P701AA007WJ
P1701 NA071WJEA
1GND
2 GND
3B+13V4 B+13V
5GND6GND
7B+6V8 B+6V
9B+6V/POW_SEL10 PFC_CON
11AUDIO_GND12 AUDIO_GND
13B+12V_AUDIO14 B+12V_AUDIO
P901
NB470WJ
From Power
1B+20V
2GND
4B+385V
P7702N0564TAEB
1 N-LIGHT C
2 N-LIGHT E
3 B+6V_BALLAST
4 LAMP_CON
5 ECO
P1707
N0563TA
EB for Ballast
1 N-LIGHT C
2 N-LIGHT E
3 B+6V_BALLAST
4 LAMP_CON
5 ECO
P1709 N0563TALF
1 RCS
2 RCS_PULL
3 NC
4 LENSSHUTTER
5 LENSSHUTTER_PULL
P1301
NA058WJSP
1 LCH(+)
2 LCH(-)
3 RCH(-)
4 RCH(+)
P1721 N0464TAFA
LAMP FAN
1 FAN_P
2 FAN_N
3 NC
4 LOCK
P1706 N0464TAFB
POWER FAN
1 FAN_P
2 FAN_N
3 NC
4 LOCK
P1723 N0364TAFC
EXHAUST FAN
1 FAN_P
2 FAN_N
3 LOCK
P3501
N1563TA
TAN
1KODEN_RXD
2AUD_OUTR
3GND
4AUD_OUTL
5GND
6AUD_INR
7GND
8AUD_INL
9GND
10B+3.3VSTBY
11TXD
12RXD
13UART_CON_TAN
14R/C_R
15GND
P1501
N1558RETAN
1 KOUDEN_RXD
2 AUD_OUTR
3 GND
4 AUD_OUTL
5 GND
6 AUD_INR
7 GND
8 AUD_INL
9 GND
10 B+3.3V_STBY
11 TXD
12 RXD
13 UART_CON_TAN
14 R/C_R
15 GND
QCNW-H896WJQZ
POWER FAN
VENTILATE FAN
EXHAUST FAN
LF-SW
QCNW-H899WJQZ
QCNW-H894WJQZ
THERMISTER
QCNW-H898WJQZ
QCNW-H899WJQZ
TO BI-METAL
INDEX
LF-SW
RSP-ZA386WJZZ
RSP-ZA386WJZZ
QCNW-H900WJPZ
QCNW-H901WJPZ
QCNW-H893WJPZ
QCNW-H902WJPZ
QCNW-H903WJQZ
AC-INLET
DUNTKE936WEF0
DUNTKE934WEF0
DUNTKE933WEF0
DUNTKE931WEF0
DUNTKE937WEF0
DUNTKE932WEF0
DUNTKE935WEF0
RDMDPA039WJZZ
COLOR WHEEL
DMDDMD UNIT
PHOTO SENSOR UNIT
MAIN UNIT
R/C UNIT
BALLAST CONTROL UNIT
POWER UNIT
BALLAST UNIT
TERMINAL UNIT
DUNTKF046WEF07 2
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PG-D3750WPGD3750W Service Manual CHAPTER 8. PRINTED WIRING BOARD
[1] MAIN Unit
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MAIN Unit (Side-A)8 1
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PG-D3750W
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MAIN Unit (Chip Parts Side-A)
D3804
Q1308
C3828
R3224
C3634
C3829
Q1309
R3801
D3805
R3225
R8045
D3806
R3802
R3803
R3804
D3808
C1310
R8048
C3250
D3809
R3805
C1311
L3301
R3035
C3251
C1312
R3806
L3302
C3252
C1313
R3807
C3253
Q1310
C1314
C3830
Q1311
C1315
R3809
C3831
C1316
IC3802
C3832
C1317
C3833
IC3803
C4003
IC3804
D3810
C1318
C3834
R8050
IC3805
D3811
C1319
C3835
Q4001
C1701
C4005
R3231
R8051
D3812
C3836
IC3806
Q4002
C4006
R3232
D3813
C3837
IC3807
C1703
C4007R3233
R8053
D3814
C3838
IC3808 R3810
Q4004
C1704
R3234
R8054
C4008
R3040
R3811
L3501
C3839
IC3809
Q1701
Q4005
R3235
X3351
R8055
C4009
R3041
Q4006
R3236
R3042
C1706
C1707
R3813
R3237
R8057
C1708
C1320
R3814
R3238
R3044
C1321
R3815
L3311
R3239
C1709
C1322
R3816
R3622
L3312
C1323
R3818
C1324
C3840
C4010
R3625
C1325
C3841
C4011
R3626
C1326
R3627
C3843
C1327
D1303
C4013
R3628
C1328
D1304
C3844
R3240
C4014
R8060
C1710
R1301
C3845
D1305
R3629
R3241
Q4011
C4015
R8061
C1711
D1306
R1302
D3052
C4016
Q4012
R8062
C1712
C3847
R1303
C1713
D3053
C4017
R8063
R3820
C3848
R1304
R3244
D3054
Q4014
R3050
R8064
R1305
C1715
R3821
C3849
R3245
D3055
Q4015
R8065
R3822
R1306
R1307
R3823
R1308
R3824
R3630
C1330
C1718
R1309
R3631
C1331
R3825
IC1301
L3321
R8069
R3826
C1332
R3632
L3322
R3633
C1333
R3827
R3634
C3850
R3828
C4020
R3058
R3829
R3635
R3636
C1336
C4022
C1337
C4023
R3637
R1310
C1338
R1311
C1339
D4001
FB3351
R8071
C4025
R1312
D4002
C1722
C4026
R1313
C1723
C4027
C1724
R1314
R3830
FB3354
C4028
R3060
R1315
C4029
R3831
D1701
FB3355
R3061
C1726
R3832
R1316
R3062
C1727
R1317
R3257
R4003
D1703
R3063
R1318C1340
C1728
R3834
Q1724
R4004
R3064
C1729
R1319 C1341
R3835
R1701
R3259
R3065
C1342
R3836
R1702
D1706
R3642
R3066
R4007
R3837
C1343
R3067
R3643
C4030
R3838
D1708
C1344
R1704
R3068
C1345
R3839
R4009C4031
R1706
C4032
IC4003
R3647
R1320
R3260
R3648
R1321
R1709
C1731
R3261
R1322
R3262
R1323
R3263
IC4007
C4037
C1733
R1324
R3840
R3070
IC4008
R1325
R3841
D1711
P2501
C1735
IC1706
R3842
R1326
R3072
D1712
R1327
R3843
C1737
R3267
R3844
R1328
IC1708
R1710
R3268 R3074
R4014
R3845
R1329
C1739
R3269
R4015
R3846
R3076
R4016
R3847
R4017
IC4010
R3848
R3078
R4018
R1714
R3849
IC4011
R1715
FB3562
IC4012
IC4013
R1330
C1740
R3270
FB3565
R1331
C1741
R3271
R1332
FB3566
R3272
R1333
R1334
C1744
R3080
R4020
R4021
R1335
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