Sharp XG-NV2SB Service Manual

XG-NV2SB
SERVICE MANUAL
S79M2XG-NV2SB
PAL/SECAM/NTSC SYSTEM
LCD PROJECTOR
MODEL
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.
XG-NV2SB
Page Page
• SPECIFICATIONS.............................................. 2
• IMPORTANT SERVICE SAFETY NOTES..........3
• NOTE TO SERVICE PERSONNEL....................4
• OPERATION MANUAL ...................................... 8
• REMOVING OF MAJOR PARTS......................13
• RESETTING THE TOT AL 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
• 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.
1
XG-NV2SB
Specifications
2
XG-NV2SB
2
2
2
IMPORTANT SERVICE SAFETY NOTES
Ë Service work should be performed only by qualified service technicians who are thoroughly
familiar with all safety checks and servicing guidelines as follows:
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 an AC voltmeter with sensitivity of 5000 ohm per
volt., or higher, sensitivity to measure the AC voltage 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
0.2 milliamp. AC.) or more is excessive and indicates a potential shock hazard which must be corrected before returning the unit to the owner.
AC
VOLTMETER
1.5k ohm (10W)
0.15µF
TEST PROBE
TO EXPOSED METAL PARTS
CONNECT TO KNOWN EARTH GROUND
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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 necessarily increased by using replacement components 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 original circuit. The use of a substitute replacement 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
De nombreuses pièces, électriques et mécaniques, dans les projecteur à LCD présentent des caractéristiques spéciales relatives à la sécurité, qui ne sont souvent pas évidentes à vue. Le degré de protection ne peut pas être 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 de pièces qui n’ont pas les mêmes caractéristiques que les pièces recommandées par l’usine, indiquées dans ce manuel, peut provoquer des électrocutions, incendies ou autres accidents.
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XG-NV2SB
NOTE TO SERVICE PERSONNEL
UV-RADIATION PRECAUTION
The light source, metal halide lamp, in the LCD projector emits small amounts of UV-Radiation.
A VOID 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. Do not operate the lamp outside of the lamp housing.
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. 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 CLMPF0056CE01 or BQC-XGNV6XU/1 rated 100V/ 150W.
4. The lamp emits small amounts of UV-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.
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 UV­éviter 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.
4
XG-NV2SB
4
5
UV-RADIATION PRECAUTION (Continued)
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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.]
Lamp
1
Reflector
2
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.
PRECAUTION POUR LES RADIATIONS UV (Suite)
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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 lampe de 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.]
1
Lampe
2
Reflecteur
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.
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.
LENS CAP CAPUCHON D'OPTIQUE
Comme de petites quantités de radiation UV sont émises par une ouverture entre le couvercle du con­duit 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.
Figure 1.
Figure 1.
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XG-NV2SB
Cautions Concerning the Laser Pointer
Précautions touchant le pointeur laser
6
XG-NV2SB
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 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
RISK OF ELECTRIC SHOCK.
DO NOT REMOVE SCREWS
EXCEPT SPECIFIED USER
SERVICE SCREW
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMOVE CABINET.
NO USER-SERVICEABLE P ARTS EXCEPT LAMP UNIT.
REFER SERVICING TO 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 operating and servicing instructions are in the manual with the projector.
CAUTION
(AC-SW Unit)
5A 250V
A VERTISSEMENT : Source lumineuse de grande intensité. Ne pas fixer le faisceau lumineux ou le regarder
For continued protection against a risk of fire, replace only with same type 5A 250V fuse. (F791)
directement. Veiller particulièrement à éviter que les enfants ne fixent directement le faisceau lumineux.
A VERTISSEMENT : AFIN D’EVITER TOUT RISQUE D’INCENDIE OU D’ELECTROCUTION, NE P AS PLACER
CET APPAREIL DANS UN ENDROIT HUMIDE OU MOUILLE.
ATTENTION
RISQUE
D’ELECTROCUTION NE
PASRETIRER LES VIS, A
L’EXCEPTION DES VIS DE
REPARATION UTILISATEUR
SPECIFIEES
ATTENTION: POUR EVITER T OUT RISQUE
D’ELECTROCUTION, NE PAS RETIRER LE CAPOT.
AUCUNE DES PIECES INTERIEURES N’EST REP ARABLE
PAR L’UTILISATEUR, A L’EXCEPTION DE L’UNITE DE
LAMPE. POUR TOUTE REPARA TION, S’ADRESSER A UN
TECHNICIEN D’ENTRETIEN QUALIFIE.
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.
PRECAUTION
(Unite d’interrupteur d’alimentation c.a.)
Pou r une protection continue contre les risques d’incendie, ne remplacer qu’avec un fusible 5A
5A 250V
250V du même type. (F791)
7
XG-NV2SB
Location of Controls
8
Operating the Wireless Mouse Remote Control
XG-NV2SB
9
XG-NV2SB
10
Connection Pin Assignments
XG-NV2SB
11
XG-NV2SB
Dimensions
12
XG-NV2SB
REMOVING OF MAJOR PARTS
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 of f 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.
Lens Cover
1-4
Intake Cover
Lamp Cage Unit
1-3
1-1
Lamp Cage Cover
1-2
13
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
2-1
2-2
2-3
2-2
2-1
2-3
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
(SP)
(KY)
2-4
Rear Cabinet
2-5
Video Terminal Cover
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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.
3-1
3-1
PC I/F Unit
3-1
3-1
3-3
(EA)
3-2
(FN)
3-2
Signal Unit
(FS)
3-5
3-1
(Q)
(PC)
(L)
3-2
3-2
Infrared R/C Receiver Unit
(FE)
(SO)
Output Unit
3-1
(F)
AC-SW Unit
3-4
(PF)CN791
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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.
4-3
4-1
Power/Ballast Unit Ass'y
4-2
to Filter Unit
Sound Out Unit
4-4
16
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.
5-1
5-2
Optical Mechanism Unit
XG-NV2SB
Duct Fan Unit
5-2
5-2
6-1
Filter Unit
17
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.
POWER
ON/OFF
BLACK
SCREEN
LAMP TEMP
INPUT SELECT
IN
ENTER
IN
ENTER
MUTE
MENU
MNMN
ADJ."
VOL
ADJ.|
18
THE OPTICAL UNIT OUTLINE
Layout of the optical system
Note: Layout for positioning the optical system.
XG-NV2SB
Projection Lens
Dichroic coating (B reflection)
Incident polarizing plate B
Dichroic coating (B transmission)
Marking
M6
BLUE
B reflector
G03 L2
Relay lens 3
Relay lens 2
G02 L2
AL-coated mirror B
M4
AL-deposited face
B-LCD
Cross dichroic prism
G-LCD
Incident polarizing plate G
Marking
G01
Relay lens 1
Condenser lens G
GREEN
BLUE
G reflector
* M3
R-LCD
Dichroic coating
(G reflection)
Dichroic coating
PBS(polarization beam splitter)
Incident polarizing plate R
Dichroic coating (R transmission)
AL-coated mirror R
M5
Condenser lens R
AL-deposited face
RED
Marking
(R reflection)
M2
B/G reflector
* The M3 mirrors have a coating
wedge (for different film thick­ness). Set up these mirrors, with their markings positioned as shown above, so that their coated faces and both sides be in the correct directions.
UHP lamp
(Light source)
Fly-eye lens (outgoing light)
UV-IR coating
Fly-eye lens (incoming light)
19
L1
AL-deposited face
PBS aperture
M1
AL-coated mirror W
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-to­bottom 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 :
1 Carefully proceed with the focus adjustment because the adjusting directions are correlated. 2 In 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
» T ake 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-LCD panel’s screen center as reference, adjust the B-LCD panel in the X, Y and θZ directions. (3) Finally tighten up the convergence lock screw "d".
20
Notes :
1 The eccentric cam is used for convergence adjustment. This means that the cam’s turning and the linear
movement are not always uniform.
2 This model is not equipped with the LCD image adjustment mechanism. This is because the dichroic prism
is used for image formation. When the LCD panels all get into the best focus, the images are almost completely converged.
Convergence and Focus Adjustments Mechanism
XG-NV2SB
TOP VIEW
Lock screw "a"
Notch and hole "a" (Use an eccentric screwdriver.)
FRONT
R-LCD
B-LCD
Z
X
θY
Lock screws "c"
Notch and hole "c" (Use an bladed screwdriver.)
Notch and hole "b" (Use an eccentric screwdriver.)
G-LCD
Lock screw "b" (θY direction)
Notch and hole "c" (Use on eccentric screwdriver.)
X
Z
SIDE VIEW
G-LCD panel mounting screws
θY
G-LCD
G adjusting plate
SIDE VIEW (from inside)
Eccentric cam (X direction adjustment)
Eccentric cam (Y direction adjustment)
R•B adjusting plate
R•B-LCD
SIDE VIEW (from outside)
Eccentric cam (θZ direction adjustment)
Lock screw "d" (convergence adjustment)
Y
X
θZ
R•B-LCD
R•B adjusting plate
R•B-LCD panel mounting screws
21
XG-NV2SB
2
5
16
R2
50
CUT
100
Convergence and Focus Adjustments at a Glance
Adjustment directions
Adjustment Direction Definition Direction of LCD panel
X direction LCD right and left
Convergence Y direction LCD top and bottom
θZ direction Rotation around Z axis LCD turning axis Z direction LCD optical axis
Focus θX direction Rotation around X axis LCD top-to-bottom flapping
θY direction Rotation around Y axis LCD right-to-left flapping
Convergence and Focus Adjustment for the XG-NV2 Optical Mechanism
Color Adjustment Direction
X direction ±0.8mm Eccentric cam Eccentric cam adjusting wrench d Hex wrench
Convergence Y direction ±0.8mm Eccentric cam Eccentric cam adjusting wrench d Hex wrench
R/B θZ direction ±1° Eccentric cam Eccentric cam adjusting wrench d Hex wrench colors Z direction ±0.8mm
Focus θX direction ±1°
θY direction ±1°
Z direction ±0.2mm
G color Focus θX direction ±1° Same as for R and B colors
θY direction ±1°
Movement
Position Adjusting tool
Notch and hole "a" & "c" Notch and hole "a" & "c" Notch and hole "b" & "c"
Eccentric screwdriver, a, c Bladed screwdriver a, c
Lock screw
b, c
Tightening tool
Phillips screwdriver, *Hex wrench
Focus Adjustments the Other Way
Lock screw Position Related direction
a Notch and hole "a" Z and θX directions b Notch and hole "b" θY direction c Notch and hole "c" Z, θX and θY directions
Convergence and Focus Adjusting and Tightening Tools
Tool Specific or General Tool code Configuration
Eccentric cam Specific 9DASPN-XGNV1U adjusting wrench
80
Eccentric screwdriver Specific 9EQDRiVER-NV1A
Hex wrench General (redesigned) 9EQLNC-XGNV1U
0.5
Bladed screwdriver General 9EQDRiVER-NV1B
3.5 ø3.5
min85
ø5
Phillips screwdriver General For M2.6 pan-head machine screw *Hex wrench General
22
Preferably use a 70 mm or longer screwdriver (with a handle).
XG-NV2SB
Replacing the LCDs
With the top cabinet removed
(1)Disconnect the LCD flat cable from the output PWB connector. (2)Remove the two screws of the LCD cover. (3)Remove the lock screws "b" and "c". Detach the R/B adjusting plate or the G adjusting plate together with the LCD
panel. (4)Separate the LCD panel from the adjusting plate. (5)Mount a new LCD panel in the reverse order of the above steps (1), (2), (3) and (4).
~ Readjust the convergence and focus. Note that the G LCD panel needs no convergence adjustment and has
a small adjustment range in the Z direction.
TOP VIEW
LCD cover
TOP VIEW
2
FRONT
Lock screws "b"
R-LCD
3
3
Lock screws "c"
Lock screws "c"
3
G-LCD
X
θY
Z
~
X
θY
B-LCD
3
Lock screws "c"
Z
2
SIDE VIEW
R•B-LCD
R•B adjusting plate
4
R•B-LCD panel mounting screws
23
SIDE VIEW
G adjusting plate
G-LCD
X
θZ
Y
G-LCD panel
4
mounting screws
XG-NV2SB
Adjusting the optical axis of the mirrors (M1, M5 and M6)
The optical axis must be readjusted if an eclipse happens with the R. G or B mirrors. Generally speaking, this adjustment is needed when any of the internal optical components has been replaced.
Adjustment procedure required when any of the panels has been replaced or the convergence has been adjusted
(1)Disconnect the flat cables of all the LCD panels. (2)Let the lamp light up. (3)To adjust the G mirror, shield the R and B mirrors with shielding plates (You can use a business card or the like to
block the light). (4)Loosen the lock screw of the M1 adjust lever. (5)Adjust the color discrepancy on the screen by turning the screws A and B. (6)To adjust the R mirror, shield the G and B mirrors and adjust the M5 adjust lever. For the B mirror, shield the R and
G mirrors and adjust the M6 adjust lever.
(Take the same steps 4 and 5 above.) (7)Remove all the shielding plates to have a white image.
Make sure there is no eclipse.
M6
Lock screws
Shielding plate B
adjust lever
slide
turn
FRONT
Shielding plate R
M5
Shielding plate G
adjust lever
Lock screws
turn
slide
Screws
24
turn
Screws
slide
ScrewB
M1
Lock screws
ScrewA
adjust lever
XG-NV2SB
ELECTRICAL ADJUSTMENT
Hook up a signal generator, or a DOSV or Mac personal computer to the projector in order to feed the signals specified in the Adjusting conditions.
No. Adjusting point Adjusting conditions Adjusting procedure
1 EEPROM
initialization
1. Turn on the power (make sure the lamp lights up) and warm up the unit for 15 min­utes.
» Make the following settings:
Press S5001 to call up the process mode and execute S2 in the SSS menu. Now the system, with the PC board not included, is initialized. Do not execute S1 because otherwise the PC board will be initialized. To adjust the PC board, follow the instruction in "Adjusting the PC board". (See page 30)
2 R drive 1. Make the following choice.
Group : A/D Subject : GAIN Make sure the GAIN value is 163.
2. Feed the 100% red-only signal, SVGA (800 x 600) 60Hz, 700mV at PC IN con­nector. Group : A/D Subject : R-D
3 B drive 1. Feed the 100% blue-only
signal, SVGA (800 x 600) 60Hz, 700mV at PC IN con­nector. Group : A/D Subject : B-D
» Using the control switches or the remote controller
buttons, adjust the data so that the signal becomes bit-less (noise).
» Using the control switches or the remote controller
buttons, adjust the data so that the signal becomes bit-less (noise).
4 G drive 1. Feed the 100% green-only
signal, SVGA (800 x 600) 60Hz, 700mV at PC IN con­nector. Group : A/D Subject : G-D
25
» Using the control switches or the remote controller
buttons, adjust the data so that the signal becomes bit-less (noise).
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No. Adjusting point Adjusting conditions Adjusting procedure
5 RGB 1 system
black level signal amplitude (odd-numbered)
1. Make the following choice: Group : OUTPUT 1 Subject : R1-BLK
R1-GAIN For green, choose the sub­jects G1-BLK and G1­GAIN. For blue, choose the sub­jects B1-BLK and B1-GAIN.
» Choose the subject R1-BLK and adjust the black
peak level to 2.7 ±0.1V DC using the control switches or the remote controller buttons.
» Next, choose the subject R1-GAIN and adjust the
signal amplitude to 2.9 ±0.1 Vp-p.
» Make the same adjustment for green and blue.
6 RGB 2 system
black level signal amplitude (even-num­bered)
2. Connect the oscilloscope to pin (4)(TP1 101) of SC1101 for red.
Pin (4)(TP1201) of
SC1201 for green
Pin (4)(TP1301) of
SC1301 for blue
1. Make the following choice: Group : OUTPUT 2 Subject : R2-BLK(R),
R2-GAIN For green, choose the sub­jects G2-BLK and G2­GAIN. For blue, choose the sub­jects B2-BLK and B2-GAIN.
2. Connect the oscilloscope to pin (6)(TP1 102) of SC1101 for red.
Pin (6)(TP1202) of
SC1201 for green
Pin (6)(TP1302) of
SC1301 for blue
2.9Vp-p
2.7V DC
» Choose the subject R2-BLK and adjust the black
peak level to 2.7 ±0.1V DC using the control switches or the remote controller buttons.
» Next, choose the subject R2-GAIN and adjust the
signal amplitude to 2.9 ±0.1 Vp-p.
2.9Vp-p
2.7V DC
» Make the same adjustment for green and blue.
7 Sample-and-
hold pulse phase RCK-PHASE GCK-PHASE BCK-PHASE
1. Feed the XGA mode 75-Hz black signal.
2. Make the following choice: Group : OUTPUT 3 Subject : SH-PHASE (Have the standard level at
8.) Fix the R-, G- and B­PHASE settings all to 4.
» Feed the SVGA gradation pattern single-color sig-
nal and make sure that there is no difference in brightness between adjacent vertical lines. If there is a difference, make fine adjustment by choosing the following subjects.
R2-GAIN for red G2-GAIN for green B2-GAIN for blue.
» Using the control switches or the remote controller
buttons, make sure that the “OUTPUT 3” characters are not blurry and there is no ghost image. If such blur or ghost occurs, finely adjust the setting in the range of 7~9.
26
No. Adjusting point Adjusting conditions Adjusting procedure
8 RGB counter-
voltage adjustment
1. Feed the black-and-red (25%) stripe signal (SVGA) to RGB1.
» Using the control switches or the remote controller
buttons, adjust the data in order to minimize the flicker.
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9 RGB white
balance
10 Horizontal
center
2. Make the following choice: Group : OUTPUT 3 Subject : RC (R)
3. Change to the outer RG1 at the shoot of the operating switches or the remote con­troller buttons.
1. Feed the 32-step gray scale signal (SVGA). Group : OUTPUT 1 Subject : R1-BLK
R1-GAIN (R) B1-BLK
B1-GAIN (B)
1. Feed the NTSC mono­scope pattern signal.
» Make the same adjustment for BC (B) and GC (G). » See if the image is equally adjusted at the center
and both sides of the screen. If not, readjust the setting to have the image equal at right and left.
» Choose the subjects R1-BLK and B1-BLK and
adjust the black balance of the gradation. Choose the subjects R1-GAIN and B1-GAIN and adjust the gray-to-while balance.
» Using the control switches or the remote controller
buttons, adjust the data to have the same overscan.
11 Video picture
adjustment
2. Group : VIDEO 2 Subject : N358-DLY
N443-DLY PAL-DLY
SECAM-DLY Make sure all the settings are zero (0).
3. Group : VIDEO 1 Subject : NTSC-H
1. Feed the split color bar sig­nal. Group : VIDEO 1 Subject : PICTURE
2. Connect the oscilloscope between pin (2) of P801 and GND.
» Using the control switches or the remote controller
buttons, adjust the black-to-white (100%) level difference to 2.2 ±0.02 Vp-p.
2.2 Vp-p
27
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No. Adjusting point Adjusting conditions Adjusting procedure
12 Video AGC 1. Feed the split color bar sig-
nal. Group : VIDEO 1 Subject : AGC
2. Connect the oscilloscope between pin (2) of P801 and GND.
13 Video
brightness adjustment
1. Feed the baseband (split color bar) signal. (The ON­AIR signal is not accepted because of its too much noise.) Group : VIDEO 1 Subject : BRIGHT
2. Press the control switch or the remote control’s mute button (to set the gamma correction to the process setting).
» Using the control switches or the remote controller
buttons, adjust the black-to-white (100%) level difference to 1.65 ±0.02 Vp-p.
1.65 Vp-p
» Using the control switches or the remote controller
buttons, adjust the setting until the black signal becomes bit-less.
14 Tint 1. Feed the split color bar sig-
nal. Group : VIDEO 1 Subject : TINT
2. Connect the oscilloscope to pin (5) of P801.
15 NTSC color
saturation level
1. Feed the split color bar sig­nal. Group : VIDEO 1 Subject : N-COLOR
2. Connect the oscilloscope to pin (1) of P801.
» Using the control switches or the remote controller
buttons, adjust the data to have the -(B-Y) wave­form downhill straight.
» Using the control switches or the remote controller
buttons, adjust the difference between the 100% white portion and the red portion to 0.1 ±0.02 Vp-p.
100% White Red
0.1Vp-p
28
No. Adjusting point Adjusting conditions Adjusting procedure
16 PAL color
saturation level
1. Feed the P AL color bar sig­nal. Group : VIDEO 1 Subject : P-COLOR
2. Connect the oscilloscope to pin (1) of P801.
» Using the control switches or the remote controller
buttons, adjust the difference between the 100% white portion and the red portion to 0.48±0.02 Vp-p.
100% White Red
0.48Vp-p
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17 SECAM color
saturation level
18 Video white
balance
1. Feed the SECAM color bar signal. Group : VIDEO 1 Subject : S-COLOR
2. Connect the oscilloscope to pin (1) of P801.
1. Feed the NTSC mono­scope pattern signal. Group : VIDEO 2 Subject : R1-GAIN
B1-GAIN
» Using the control switches or the remote controller
buttons, adjust the data to have a level difference of
0.48 ±0.02 Vp-p between the 100% white portion and the red portion.
100% White Red
0.48Vp-p
» Using the control switches or the remote controller
buttons, adjust the data so that the white balance be just the best white balance. If the black side is not properly adjusted, first readjust the black side by making the following choice:
Group :OUTPUT 1 Subject:R1-BLK
B1-BLK
Then, make the following choice:
Group :VIDEO 2 Subject:R1-GAIN
B1-GAIN
19 Color system
performance check
20 Video system
performance check
1. Receive the color bar sig­nal.
1. Receive the monoscope pattern signal.
29
Readjust the related data. Since the subjects R1-BLK and B1-BLK are com­mon for the RGB input and VIDEO input, feed the RGB signal again to adjust the white balance.
» In the process mode and select L1. Check the color
and tint.
» In the process mode and select L2. Check the pic-
ture, brightness and sharpness.
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No. Adjusting point Adjusting conditions Adjusting procedure
21 Audio system
performance check
» In the process mode nad select L3. Check the bass,
treble and balance.
22 RGB
performance check
23 Off-timer
performance check
24 Thermistor
performance check
25 Factory settings
1. Receive the RGB signal.
1. Heat the thermistor using a dryer.
» In the process mode and select L4. Check the pic-
ture, brightness, red, blue, clock, phase, horizontal position, and vertical position.
» In the process mode and select OFF . Make sure that
the off-timer starts with “5” (minutes), counts down each minute in 1 second, and turns off the set at “0”.
» Make sure the “TEMP” is displayed.
» Make the following settings.
Process adjustment
S4 “Factory setting 4”
Remote controller setting
Adjusting the PC board (CPCi-0025CE04. PC I/F Unit)
1.Initializing te EEPROM
1) Press the S5001 key to call the process mode.
2) Execute S1 on the SSS menu. (The S1 is used to initialize the PC board alone. Do not execute S2 because otherwise all the adjusted data but the PC board will be initialized.)
2.Adjusting the level settings
2-1. Oscilloscope range setting
Set the range to DC 1V/div. and 5µs/div.
2-2. Input signal
Feed the SVGA 800x600 60Hz gradation waveform signal.
2-3. Adjusting and checking the level settings
1) Press the S5001 key to call the process mode.
2) Adjust the SH-PHASE setting on the "OUTPUT 3" menu until the "OUTPUT 3" characters are not blurry any longer.
3) Connect a oscilloscope to TP2. Adjust the BRIGHT setting of "OUTPUT 2" to have the black level of the signal at 1.7V.
4) Adjust the ROS setting on the A/D menu until the voltage at the positive pole of C64 or pin (2) of IC1 1 becomes
1.7V .
5) Adjust the GOS setting on the A/D menu until the voltage at the positive pole of C57 or pin (2) of IC10 becomes
1.7V .
6) Adjust the BOS setting on the A/D menu until the voltage at the positive pole of C50 or pin (2) of IC9 becomes
1.7V.
7) Make sure the GAIN setting on the A/D menu is 163.
8) Connect the oscilloscope to TP1. Adjust the R-D setting on the A/D menu until the white top level of the signal becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
9) Connect the oscilloscope to TP3. Adjust the B-D setting on the A/D menu until the white top level of the signal becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
10) Connect the oscilloscope to TP2. Adjust the G-D setting on the A/D menu until the white top level of the signal becomes 3.6V. (Make sure that both the black and white graduations are visible clearly.)
11) Press the S5001 key to exit from the process mode.
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