Sharp XG-NV2SB User manual

1
XG-NV2SB
SERVICE MANUAL
S79M2XG-NV2SB
In the interests of user-safety (Required by safety regulations in some countries) the set should be restored
to its original condition and only parts identical to those specified should be used.
MODEL XG-NV2SB
CONTENTS
• SPECIFICATIONS.............................................. 2
• IMPORTANT SERVICE SAFETY NOTES..........3
• NOTE TO SERVICE PERSONNEL....................4
• OPERATION MANUAL ...................................... 8
• REMOVING OF MAJOR PARTS......................13
• RESETTING THE TOTAL LAMP TIMER..........18
• THE OPTICAL UNIT OUTLINE........................ 19
• CONVERGENCE AND
FOCUS ADJUSTMENT ................................... 20
• ELECTRICAL ADJUSTMENT .......................... 25
• ADJUSTING THE PC BOARD .........................30
• TROUBLE SHOOTING TABLE ........................31
• CHASSIS LAYOUT .......................................... 48
Page Page
• BLOCK DIAGRAM ........................................... 50
• OVERALL WIRING DIAGRAM.........................52
• DESCRIPTION OF SCHEMATIC DIAGRAM ...54
• WAVEFORMS .................................................. 55
• SCHEMATIC DIAGRAM................................... 56
• PRINTED WIRING BOARD ASSEMBLIES ....100
• PARTS LIST
Ë ELECTRICAL PARTS ............................... 114
Ë CABINET AND MECHANICAL PARTS.....140
Ë ACCESSORIES PARTS ...........................146
Ë PACKING PARTS ..................................... 146
• PACKING OF THE SET .................................147
SHARP CORPORATION This document has been published to be used for
after sales service only.
The contents are subject to change without notice.
PAL/SECAM/NTSC SYSTEM
LCD PROJECTOR

2
XG-NV2SB
Specifications

3
XG-NV2SB
IMPORTANT SERVICE SAFETY NOTES
ËServicework shouldbe performedonly byqualified service technicianswho arethoroughly
familiar with all safety checks and servicing guidelines as follows:
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212
1
234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121
2
1
234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121
2
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212
AC
VOLTMETER
1.5k ohm (10W)
0.15µF
TEST PROBE
TO EXPOSED
METAL PARTS CONNECT TO KNOWN
EARTH GROUND
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212
1
234567890123456789012345678901212345678901234567890123456789012123456789012345678901234567890121
2
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212
SAFETY NOTICE
Many electrical and mechanical parts in LCD Projector
have special safety-related characteristics.
These characteristics are often not evident from visual
inspection, nor can protection afforded by them be
necessarilyincreasedby usingreplacementcomponents
rated for higher voltage, wattage, etc.
Replacement parts which have these special safety
characteristics are identified in this manual; electrical
components having such features are identified by “å”
and shaded areas in the Replacement Parts Lists and
Schematic Diagrams. For continued protection,
replacement parts must be identical to those used in the
originalcircuit. The use ofa substitutereplacement parts
which do not have the same safety characteristics as
the factory recommended replacement parts shown in
this service manual, may create shock, fire or other
hazards.
AVIS POUR LA SECURITE
Denombreusespièces, électriqueset mécaniques,dans
les projecteur à LCD présentent des caractéristiques
spéciales relatives à la sécurité, qui ne sont souvent
pas évidentes à vue.
Ledegré de protectionne peut pasêtre nécessairement
augmentée en utilisant des pièces de remplacement
étalonnées pour haute tension, puissance, etc.
Les pièces de remplacement qui présentent ces
caractéristiques sont identifiées dans ce manuel;
les pièces électriques qui présentent ces particularités
sont identifiées par la marque “å” et hachurées dans la
liste des pièces de remplacement et les diagrammes
schématiques. Pour assurer la protection, ces pièces
doivent être identiques à celles utilisées dans le circuit
d’origine. L’utilisation depièces quin’ont pas lesmêmes
caractéristiques que les pièces recommandées par
l’usine, indiquées dans ce manuel, peut provoquer des
électrocutions, incendies ou autres accidents.
WARNING
1. 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
chassis and other metal parts of the projector.
2. Inspect all protective devices such as non-metallic
control knobs, insulating materials, cabinet backs,
adjustment and compartment covers or shields,
isolation resistor-capacity networks, mechanical
insulators, etc.
3. To be sure that no shock hazard exists, check for
current 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 watt
resistor paralleled by a 0.15µF capacitor in parallel
between all exposed metal cabinet parts and earth
ground.
»Use anAC voltmeter with sensitivity of 5000 ohm per
volt., orhigher, sensitivity to measure theACvoltage
drop across the resistor (See Diagram).
»All checks must be repeated with the AC plug
connection reversed. (If necessary, a non-polarized
adapter plug must be used only for the purpose of
completing these checks.)
Any reading of 0.3 volts RMS (this corresponds to
0.2milliamp.AC.) or moreis excessive andindicates
a potential shock hazard which must be corrected
before returning the unit to the owner.

4
XG-NV2SB
NOTE POUR LE PERSONNEL
D’ENTRETIEN
PRECAUTION POUR LES RADIATIONS UV
La source de lumière, la lampe métal halide, dans le
projecteur LCD émet de petites quantités de
radiation UV.
EVITEZ TOUTE EXPOSITION DIRECTE
DES YEUX ET DE LA PEAU.
Pour votre sécurité, nous vous prions de respecter
les points suivants:
1. Toujours porter des lunettes de soleil lors d’un
entretien du projecteur
avec la lampe allumée
et le haut du coffret retiré.
2. Ne pas faire fonctionner la lampe à l’extérieur du
boîtier de lampe.
3. Ne pas faire fonctionner plus de 2 heures avec le
coffret retiré.
Précautions pour les radiations UV
et la lampe moyenne pression
1. Toujours débrancher la fiche AC lors du
remplacement de la lampe.
2. Laisser l’unité refroidir pendant une heure avant de
procéder à l’entretien.
3. Ne remplacer qu’avec une lampe du même type.
Type CLMPF0056CE01 or BQC-XGNV6XU/1,
caractéristique 100V/150W.
4. La lampe émet de petites quantités de radiation UV-
éviter tout contact direct avec les yeux.
5. La lampe moyenne pression implique un risque
d’explosion. Toujours suivre les instructions
d’installation décrites ci-dessous et manipuler la
lampe avec soin.
NOTE TO SERVICE
PERSONNEL
UV-RADIATION PRECAUTION
The light source, metal halide lamp, in the LCD
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 the
projector with the lamp
turned “on” and the top
enclosure removed.
2. Donot operate thelamp outside ofthe lamp housing.
3. Do not operate for more than 2 hours with the
enclosure removed.
UV-Radiation and Medium Pressure
Lamp Precautions
1. 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
CLMPF0056CE01or BQC-XGNV6XU/1 rated 100V/
150W.
4. Thelampemitssmall amountsofUV-Radiation, avoid
direct-eye contact.
5. The medium pressure lamp involves a risk of
explosion. Be sure to follow installation instructions
described below and handle the lamp with care.
12345678901234567890123456789012123456789012345
12345678901234567890123456789012123456789012345
12345678901234567890123456789012123456789012345
12345678901234567890123456789012123456789012345
12345678901234567890123456789012123456789012345
12345678901234567890123456789012123456789012345
12345678901234567890123456789012123456789012345
12345678901234567890123456789012123456789012345

5
XG-NV2SB
12345678901234567890123456789012123456789012345
12345678901234567890123456789012123456789012345
1234567890123456789012345678901212345678901234
1
23456789012345678901234567890121234567890123
4
1234567890123456789012345678901212345678901234
1
2
Lamp
Reflector
Comme de petites quantités de radiation UV sont
émisespar une ouverture entre le couvercle ducon-
duit et le botier de la lampe,il est recommandé de
placer le CAPUCHON D'OPTIQUE sur l'ouverture
pendant l'entretien pour éviter une exposition des
yeux et la peau (Fig. 1).
Remarque:Priére de se procurer un capuchon
d'optique acant d'entretien un modéle
XG-NV2SB qui est livré sans.
Since small amounts of UV-Radiation are emitted
from an opening between the duct cover and the
lamp housing, it is recommended to place the LENS
CAP on the opening during servicing to avoid eye
and skin exposure (Fig. 1).
Note: Please obtain a lens cap before servicing a
model XG-NV2SB that is received without
one.
Figure 1. Figure 1.
DANGER ! –– Never turn the power on without the
lamp to avoid electric-shock or damage of the
devices since the stabilizer generates high voltages
at its start.
UV-RADIATION PRECAUTION (Continued)
Lamp Replacement
Note:
Since the lamp reaches a very high temperature
during units operation replacement of the lamp
should be done at least one hour after the power
has been turned off. (to allow the lamp to cool off.)
Installing the new lamp, make sure not to touch the
lamp (bulb) replace the lamp by holding its reflector
2.
[Use original replacement only.]
DANGER ! –– Ne jamais mettre sous tension sans
la lampe pour éviter un choc électrique ou des
dommages des appareils car le stabilisateur génère
de hautes tensions à sa mise en route.
12345678901234567890123456789012123456789012345
12345678901234567890123456789012123456789012345
12345678901234567890123456789012123456789012345
1
234567890123456789012345678901212345678901234
5
12345678901234567890123456789012123456789012345
1
2
Remplacement de la lampe
Remarque:
Comme la lampe devient très chaude pendant le
fonctionnement de l’unité, son remplacement ne doit
être effectué au moins une heure après avoir coupé
l’alimentation(pour permettre à la lampede refroidir).
En installant la nouvelle lampe, s’assurer de ne pas
toucher la lampe (ampoule). Remplacer la lampe en
tenant son réflecteur 2.
[N’utiliser qu’un remplacement d’origine.]
PRECAUTION POUR LES RADIATIONS UV (Suite)
Lampe
Reflecteur
LENS CAP CAPUCHON D'OPTIQUE

6
XG-NV2SB
Cautions Concerning the Laser Pointer
Précautions touchant le pointeur laser

7
XG-NV2SB
WARNING: Highbrightness light source, do not stare into the beam of light, or viewdirectly. Be especially
careful that children do not stare directly in to 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: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE CABINET.
NO USER-SERVICEABLE PARTS EXCEPT LAMP UNIT.
REFER SERVICINGTO QUALIFIED SERVICE
PERSONNEL.
The lighting flash with arrowhead within a
triangle is intended to tell the user that
parts inside the product are risk of electric
shock to persons.
The exclamation point within a triangle is
intended to tell the user that important
operatingand servicing instructionsare in
the manual with the projector.
CAUTION
AVERTISSEMENT: Source lumineuse de grande intensité. Ne pas fixer le faisceau lumineux ou le regarder
directement. Veiller particulièrement à éviter que les enfants ne fixent directement le
faisceau lumineux.
AVERTISSEMENT: AFIN D’EVITER TOUT RISQUE D’INCENDIE OU D’ELECTROCUTION, NE PAS PLACER
CET APPAREIL DANS UN ENDROIT HUMIDE OU MOUILLE.
L’éclair terminé d’une flèche à l’intérieur
d’un triangle indique à l’utilisateur que les
pi‘eces se trouvant dans l’appareil sont
susceptibles de provoquer une décharge
électrique.
Le point d’exclamation à l’intérieur d’un
triangle indique à l’utilisateur que les
instructions de fonctionnement et
d’entretien sont détaillées dans les
documents fournis avec le projecteur.
RISQUE
D’ELECTROCUTION NE
PASRETIRER LES VIS,A
L’EXCEPTION DES VIS DE
REPARATION UTILISATEUR
SPECIFIEES
ATTENTION
ATTENTION: POUR EVITER TOUT RISQUE
D’ELECTROCUTION, NE PAS RETIRER LE CAPOT.
AUCUNE DES PIECES INTERIEURES N’EST REPARABLE
PAR L’UTILISATEUR,AL’EXCEPTION DE L’UNITE DE
LAMPE. POUR TOUTE REPARATION, S’ADRESSER A UN
TECHNICIEN D’ENTRETIEN QUALIFIE.
RISK OF ELECTRIC SHOCK.
DO NOT REMOVE SCREWS
EXCEPT SPECIFIED USER
SERVICE SCREW
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212
12345678901234567890123456789012123456789012345678901234567890121234567890123456789012345678901212
CAUTION
(AC-SW Unit)
For continued protection
against a risk of fire,
replace only with same
type 5A 250V fuse.
(F791)
5A 250V
Pou r une protection
continue contre les risques
d’incendie, ne remplacer
qu’avec un fusible 5A
250V du même type.
(F791)
5A 250V
PRECAUTION
(Unite d’interrupteur d’alimentation c.a.)

8
XG-NV2SB
Location of Controls

9
XG-NV2SB
Operating the Wireless Mouse Remote Control

10
XG-NV2SB

11
XG-NV2SB
Connection Pin Assignments

12
XG-NV2SB
Dimensions

13
XG-NV2SB
1.Removing the Intake cover, lamp unit and lens cover
1-1. Detach the Intake cover.
1-2. Remove the screw off the lamp cage cover and detach the lamp cage cover.
1-3. Remove the three lock screws off the lamp cage unit and detach the lamp cage unit.
1-4. Remove the lock screw from the lens cover. Turn the lens cover clockwise or counterclockwise and detach it.
Notes:
»Before the replacement, turn off the projector’s power button, make sure the cooling fan comes to a complete
stop, and unplug the power cord.
»The lamp may be still very hot. Turn off the power button, unplug the power cord and wait for at least 1 hour
before staring the job.
»In fitting the lamp cage unit back into position, make sure the connector is at the top position.
REMOVING OF MAJOR PARTS
1-4
1-1
1-3
1-2
Lens Cover
Intake Cover
Lamp Cage Unit
Lamp Cage Cover

14
XG-NV2SB
2.Removing the top and rear cabinets
2-1. Remove the five lock screws off the rear cabinet.
2-2. Remove the ten lock screws from the rear cabinet and the terminal plate. Detach the rear cabinet from the
bottom first (because it is hooked at the top).
2-3. Remove the four lock screws off the top cabinet.
2-3
2-3
2-3
2-1
2-1
2-2
2-2
2-3
(KY)
(SP)
2-4
2-5
2-4. While pressing the top center at both sides of the bottom cabinet, pull the ends of the top cabinet outward to
unhook it. Slowly lift the back of the top cabinet, disconnect the operation key PWB connector (KY) and the
speaker connector (SP), and take up and away the top cabinet.
2-5. Remove the lock screw off the video terminal cover and detach the video terminal cover.
Operation Key Unit
Top Cabinet
Rear Cabinet
Video Terminal Cover

15
XG-NV2SB
3.Removing the PWBs
3-1. Remove the six lock screws from the PC I/F PWB. Disconnect the output PWB unit connectors. Pull up the PC
I/F PWB off the output PWB unit.
3-2. Remove the three spacers and the lock screw from the output PWB unit. Disconnect the LCD flat cables. Pull
up and away the output PWB unit together with the signal PWB unit on it.
3-3. Flip up the output PWB unit by 90°. Pull it up off the signal PWB unit.
3-4. Hold up the front of the AC switch PWB and draw the PWB out of position.
3-5. Finally detach the remote control receiver PWB.
(FE)
(PC)
(SO)
3-5
3-4
(L)
(Q)
(FS)
(FN)
(F)
(PF)CN791
3-1
3-3
3-1
Signal Unit
PC I/F Unit
(EA)
3-1 3-1
3-1
3-1
Output Unit
Infrared R/C Receiver Unit
AC-SW Unit
3-2
3-2
3-2
3-2

16
XG-NV2SB
4.Removing the power/ballast PWB assembly
4-1. Remove the three lock screws off the power/ballast PWB assembly.
4-2. Remove the two lock screws off the lamp socket holder and detach the holder.
4-3. Disconnect the ground wire from the filter PWB.
4-4. Lift the power/ballast PWB assembly and take out this assembly.
4-1
4-2
4-3
4-4
to Filter Unit
Sound Out Unit
Power/Ballast Unit Ass'y

17
XG-NV2SB
5.Removing the optical mechanism unit
5-1. Remove the lock screw from the IC cooling duct and remove the duct.
5-2. Remove the four lock screws off the optical mechanism unit and detach this unit.
6.Remove the filter PWB
6-1. Remove the two lock screws off the filter PWB and detach this PWB.
5-2
5-1
6-1
5-2
5-2
Optical Mechanism Unit
Duct Fan Unit
Filter Unit

18
XG-NV2SB
RESETTING THE TOTAL LAMP TIMER
When the lamp has been replaced, reset the total lamp timer in the following steps.
Resetting procedure
1. While holding down the “ENTER”, “ADJ."” and “ADJ.|” keys on the set at the same time, turn on the main
power switch (located above the AC inlet).
2. Now the total lamp timer is reset to zero. “000H” appears on the screen.
IN
MNMN
BLACK
SCREEN MENU
ON/OFF
POWER
INPUT SELECT
MUTE
VOL
IN
ENTER
LAMP TEMP
ENTER ADJ.| ADJ."

19
XG-NV2SB
THE OPTICAL UNIT OUTLINE
Layout of the optical system
Note: Layout for positioning the optical system.
* The M3 mirrors have a coating
wedge (for different film thick-
ness). Setupthesemirrors,with
their markings positioned as
shown above, so that their
coated faces and both sides be
in the correct directions.
B-LCD
G-LCD
GREEN
BLUE
BLUE
RED
R-LCD
Dichroic coating
(B transmission)
Dichroic coating
(B reflection)
Incident polarizing plate R
Dichroic coating
(R transmission)
AL-coated mirror R
AL-deposited face
(R reflection)
Marking
Dichroic coating
(G reflection)
Marking
G reflector
Dichroic coating
B/G reflector
AL-coated mirror W
AL-deposited
face
Fly-eye lens (outgoing light)
Fly-eye lens (incoming light)
UV-IR coating
PBS aperture
UHP lamp
(Light source)
Relay lens 1
AL-deposited face
AL-coated mirror B
Projection Lens
B reflector
Cross dichroic prism
Incident polarizing plate B
Relay lens 3
Relay lens 2 Incident polarizing plate G
Condenser lens G
Marking
Condenser lens R
* M3
M6
G03 L2
G02 L2
G01
M4 M2
M5
M1
PBS(polarization
beam splitter)
L1

20
XG-NV2SB
CONVERGENCE AND FOCUS ADJUSTMENT
»Start the convergence and focus adjustments with the top cabinet and the LCD covers
(Top/Bottom) removed but the power on. Use the remote control to adjust the image.
Take the following procedures.
1. Focusing the projection lens
(A) Replacing all the 3 LCD panels
1. Before replacing all the 3 LCD panels, project an image on the screen and bring it into focus.
2. Replace the panels with new ones. But until the focus has been completely readjusted, be careful not to
change the distance between the set and the screen, nor to move the projection lens focus and zoom
rings.
If the focus is readjusted with a different positional relation, the relation between the projection distance
and the screen size is affected. In other words, a short-distance image (40 WIDE, for example) may get
out of the focus range, or a long-distance image (300 WIDE, for example) may come out of focus.
(B) Replacing 1 or 2 of the 3 LCD panels
1. In adjusting the focus after replacement of one or two LCD panels, project an image on the screen and turn
the projection lens focus ring to get the non-replaced LCD panel into focus.
2. But until the focus has been completely adjusted for the new LCD panels, be careful not to change the
distance between the set and the screen, nor to move the projection lens focus and zoom rings.
(If the distance has been changed or the projection lens readjusted, repeat the above steps 1 and 2.)
2. Adjusting the G-LCD panel
(A) Focus adjustment. (Make this adjustment on the white-only screen.)
1. Right-and-left focus adjustment (θY direction) .
Loosen the lock screws "b" and "c" and insert the eccentric screwdriver into the notch and hole "b". Turn
the screwdriver until the right and left halves on the screen get into focus.
First get the right and left halves in balance. Then improve the accuracy while making the adjustment 2
below.
2. Top-center-bottom focus adjustment (θX and Z directions).
Loosen the lock screws "a" and "c" and insert the eccentric screwdriver into the notch and hole "a" or "c".
Turn the screwdriver until the top, center and bottom on the screen get into focus. In adjusting this top-to-
bottom focus, temporarily tighten the lock screw "b" to fix the θY direction adjustment.
3. Repeat the above steps 1 and 2 to finely adjust the focus. Finally tighten up all the lock screws.
Notes :
1Carefully proceed with the focus adjustment because the adjusting directions are correlated.
2In adjusting the convergence and focus, do not move the projection lens zoom and focus rings until the end
of all the adjustments.
(B) Convergence adjustment
»The G-LCD panel has no convergence adjustment mechanism. Use this panel as convergence adjustment
reference.
3. B-LCD panel adjustment (the same for the R-LCD panel)
(A) Focus adjustment
»Take the same procedure as for the G-LCD panel focus adjustment. Note that the adjustment range is small
in the Z direction. If the convergence is quite different between the B-LCD and G-LCD panels, roughly adjust
the convergence first and then the focus.
(B) Convergence adjustment
»Use a crosshatch pattern signal for this adjustment.
Make the adjustment just for the G-color and the relevant color.
(1) Loosen the convergence lock screw "d".
(2) With the G-LCDpanel’s screen centeras reference, adjustthe B-LCDpanel inthe X,Y and θZdirections.
(3) Finally tighten up the convergence lock screw "d".