SHARP PG-M20X Service Manual

TENTATIVE
SERVICE MANUAL SERVICE-ANLEITUNG
MODEL
PG-M20X
MODELLE
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.
Im lnteresse der Benutzersicherheit (erforderliche Sicherheitsregeln in einigen Ländern) muß das Gerät in seinen Originalzustand gebracht werden. Außerdem dürfen für die spezifizierten Bauteile nur identische Teile verwendet werden.
CONTENTS
Page
» SPECIFICATIONS ............................................. 2
» IMPORTANT SERVICE SAFETY
NOTES (for USA)............................................... 3
» NOTE TO SERVICE PERSONNEL ................... 4
» OPERATION MANUAL ...................................... 7
» REMOVING OF MAJOR PARTS ..................... 13
» RESETTING THE TO TAL LAMP TIMER ......... 16
» ELECTRICAL ADJUSTMENT........................... 19
» TROUBLE SHOOTING TABLE ........................ 25
» CHASSIS LAYOUT .......................................... 46
» BLOCK DIAGRAM........................................... 48
» OVERALL WIRING DIAGRAM ........................ 50
» SCHEMATIC DIAGRAM .................................. 52
» PRINTED WIRING BOARD ASSEMBLIES..... 98
» PARTS LIST
Ë
ELECTRICAL PARTS ................................ 103
Ë
CABINET AND MECHANICAL PARTS ..... 116
Ë
ACCESSORIES PARTS ............................ 120
Ë
PACKING PARTS....................................... 120
» PACKING OF THE SET ................................. 121
PG-M20X
SHARP CORPORATION
This document has been published to be used for after sales service only. The contents are subject to change without notice.
PG-M20X
Specifications
Product type
Model
Video system
Display method
DMD panel
Lens
Projection lamp
Component input signal
(INPUT1)
Horizontal resolution
Computer RGB input signal
(INPUT 1)
S-video input signal
(INPUT 2)
Video input signal
(INPUT 3)
Pixel clock
Vertical frequency
Horizontal frequency
Audio input signal
Audio output
Speaker system
Rated voltage
Input current
Rated frequency
Power consumption
Power dissipation
Operating temperature
Storage temperature
Cabinet
I/R carrier frequency
Dimensions (approx.)
Weight (approx.)
Supplied accessories
Replacement parts
Digital Multimedia Projector PG-M20X NTSC 3.58/NTSC 4.43/PAL/PAL-M/PAL-N/PAL 60/SECAM/ DTV480I/DTV480P/DTV720P/DTV1080I Single Chip Digital Micromirror Device™ (DMD™) by Texas Instruments Panel size: 0.7" (17.8 mm), 1 chip XGA DMD No. of dots: 786,432 dots (1,024 [H] × 768 [V]) 1–1.2 × zoom lens, F1.75–2.04, f = 28.0–33.5 mm High Intensity Discharge Lamp (HID Lamp), DC 210 W 29-pin connector DVI input signal:Digital 250–1,000 mV 50
Y: 1.0 Vp-p, sync negative, 75 terminated
: 0.7 Vp-p, 75 terminated
P
B
: 0.7 Vp-p, 75 terminated
P
R
700 TV lines (DTV720P) 29-pin connector RGB separate/sync on green type analog input: 0–0.7 Vp-p, positive, 75 terminated HORIZONTAL SYNC. SIGNAL: TTL level (positive/negative) VERTICAL SYNC. SIGNAL: Same as above 4-pin Mini DIN connector Y (luminance signal): 1.0 Vp-p, sync negative, 75 terminated C (chrominance signal): Burst 0.286 Vp-p, 75 terminated RCA connector: VIDEO, composite video, 1.0 Vp-p, sync negative, 75 terminated 12–230 MHz 43–100 Hz 15–126 kHz ø3.5 mm M
2.0 W (monaural) 4 cm × 3 cm AC 100–240 V
3.2 A 50/60 Hz 290 W <1,090 BTU/hour 41°F to 95°F (+5°C to +35°C) –4°F to 140°F (–20°C to +60°C) Plastic 38 kHz
5
⁄8" × 3" × 11 15⁄16" (219 (W) × 76 (H) × 303 (D) mm) (main body only)
8
3
8
⁄4" × 3 1⁄4" × 12 1⁄2" (223 (W) × 83 (H) × 318 (D) mm) (including adjustment feet
and projecting parts)
5.8 lbs. (2.6 kg) Remote control, Two R-03 batteries, Power cord for U.S., Canada etc. (6', 1.8 m), Power cord for Europe, except U.K. (6', 1.8 m), Power cord for U.K., Hong Kong and Singapore (6',
1.8 m), Power cord for Australia, New Zealand and Oceania (6', 1.8 m), DVI to 15-pin D-sub cable (6', 1.8 m), USB cable (6', 1.8 m), Carrying case, Lens cap (attached), Lens cap strap, Terminal cover (attached), CD-ROM, Operation manual, Quick reference guides Lamp unit (Lamp/cage module) (BQC-PGM20X//1), Remote control (RRMCGA013WJSA), Two R-03 batteries (“AAA” size, UM/SUM-4, HP-16, or similar), Power cord for U.S., Canada etc. (QACCDA007WJPZ), Power cord for Europe, except U.K. (QACCV4002CEZZ), Power cord for U.K., Hong Kong and Singapore (QACCB5024CENA), Power cord for Australia, New Zealand and Oceania (QACCL3022CEZZ), DVI to 15-pin D-sub cable (QCNWGA010WJZZ), USB cable (QCNWG0001WJPZ), Carrying case (GCASN0005CESA), Lens cap (CCAPHA001WJ01), Lens cap strap (UBNDT0013CEZZ), Terminal cover (GCOVD0103CESA), CD-ROM (UDSKA0058CEN1), Operation manual (TINS-7609CEZZ), Quick reference guides
Analog 0.7 Vp-p 75
INIJACK
: AUDIO, 0.5 Vrms, more than 47 k (stereo)
This SHARP projector uses a DMD panel. This very sophis­ticated panel contains 786,432 pixels. As with any high tech­nology electronic equipment such as large screen TVs, video systems and video cameras, there are certain acceptable tolerances that the equipment must conform to.
Specifications are subject to change without notice.
This unit has some inactive pixels within acceptable toler­ances which may result in inactive dots on the picture screen. This will not affect the picture quality or the life expectancy of the unit.
2
PG-M20X
2 2
IMPORTANT SERVICE SAFETY NOTES (for USA)
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. A C .) or more is e xcessiv e 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 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 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.
WARNING: The bimetallic component has the primary
conductive side exposed. Be very careful in handling this component when the power is on.
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AVERTISSEMENT:La composante bimétallique dispose du
conducteur primaire dénudé. Faire attention lors de la manipulation de cette composante sous tension.
3
PG-M20X
NOTE TO SERVICE PERSONNEL
UV-RADIATION PRECAUTION
The light source, metal halide lamp, in the pr ojector 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. Do not operate the lamp outside of the lamp housing.
NO TE POUR LE PERSONNEL D’ENTRETIEN
PRECAUTION POUR LES RADIATIONS UV
La source de lumière, la lampe métal halide, dans le projecteur émet de petites quantités de radiation UV.
EVITEZ TOUTE EXPOSITION DIRECTE DES YEUX ET DE LA PEAU.
Pour v otre sécurité, nous vous prions de respecter les points suivants:
1. Toujours por ter 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 BQC­PGM20X//1 rated 85V/210W.
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 BQC-PGM20X//1 caractéristique 85V/210W.
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
PG-M20X
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 ! –– Ne ver turn the power on without the lamp to avoid electric-shock or damage of the devices since the stabilizer generates high v oltages at its start.
PRECAUTION POUR LES RADIATIONS UV (Suite)
234567890123456789012345678901212345678901234
Remplacement de la lampe
Remarque:
Comme la lampe devient très chaude pendant le fonctionnement de lunité, son remplacement ne doit être effectué au moins une heure après avoir coupé lalimentation (pour permettre à la lampe de refroidir). En installant la nouvelle lampe, sassurer de ne pas toucher la lampe (ampoule). Remplacer la lampe en tenant son réflecteur 2. [Nutiliser quun remplacement dorigine.]
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
models PG-M20X that is received without one.
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 PG-M20X qui est livré sans.
Figure 1.
Figure 1.
5
PG-M20X
WARNING: High brightness light source, do not stare into the beam of light, or view directl y . 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 REMO VE SCREWS
EXCEPT SPECIFIED USER
SERVICE SCREWS
CAUTION: TO REDUCE THE RISK OF ELECTRIC SHOCK,
DO NOT REMO VE CABINET.
NO USER-SERVICEABLE PARTS EXCEPT LAMP UNIT.
REFER SERVICING T O QU ALIFIED 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.
AVERTISSEMENT: Sour ce lumineuse de grande intensité. Ne pas fixer le faisceau lumineux ou le regar der
directement. Veiller particulièrement à éviter que les enfants ne fixent directement le faisceau lumineux.
A VERTISSEMENT : AFIN D’EVITER T OUT RISQ UE D’INCENDIE OU D’ELECTR OCUTION, NE PAS PLACER
CET APPAREIL DANS UN ENDROIT HUMIDE OU MOUILLE.
ATTENTION
RISQUE DELECTR OCUTION NE PASRETIRER LES VIS, A
L’EXCEPTION DES VIS DE
REPARATION UTILISATEUR
SPECIFIEES
ATTENTION: POUR EVITER TOUT RISQ UE
DELECTR OCUTION, NE PAS RETIRER LE CAPOT.
AUCUNE DES PIECES INTERIEURES NEST REPARABLE
PAR L ’UTILISATEUR, A L’EXCEPTION DE L’UNITE DE
LAMPE. POUR T OUTE REPARATION, SADRESSER A UN
TECHNICIEN DENTRETIEN QUALIFIE.
L’éclair terminé d’une flèche à l’intérieur dun triangle indique à lutilisateur que les pieces se trouvant dans lappareil sont susceptibles de provoquer une décharge électrique.
Le point dexclamation à lintérieur dun triangle indique à l’utilisateur que les instructions de fonctionnement et dentretien sont détaillées dans les documents fournis avec le projecteur.
6
PG-M20X
Precautions for using lead-free solder
1 Employing lead-free solder
"Main PWB" 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:
L Fa
Indicates lead-free solder of tin, silver and copper.
2 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 damage or accident due to cracks. As the melting point of lead-free solder (Sn-Ag-Cu) is higher than the lead wire solder by 40ºC, we recommend y ou to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldening bit, contact our service station or service ranch in your area.
3 Soldering
As the melting point of lead-free solder (Sn-Ag-Cu) is about 220ºC which is higher than the conventional lead solder by 40ºC, and as it has poor solder wettabillty, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land ma y be peeled off or the maxim um heat-resistance temperature of parts may be excoeded, remove the bit from the PWB as soon as you conurm the steady soldering condition. Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to tum on and off the power of the bit as required. 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.
Becareful when replacing parts with polarity indication on the PWB silk.
Lead-free wire solder for servicing
Part No. Description Code ZHNDAi123250E J φ0.3mm 250g(1roll) BL ZHNDAi126500E J φ0.6mm 500g(1roll) BK ZHNDAi12801KE J φ1.0mm 1kg(1roll) BM
7
PG-M20X
Location of Controls
Projector (Front and Top View)
LAMP REPLACEMENT indicator
Illuminates in green normally. Replace the lamp when the indicator illuminates in red.
POWER indicator
Illuminates in red, when the projector is in standby. When the power is turned on, this indicator will illuminate in green.
POWER button
Turns the power on or off.
LENS button
For adjusting Keystone or Digital Shift setting.
Adjustment buttons (
For selecting menu items.
)
ENTER button
For setting items selected or adjusted on the menu.
AV MUTE button
For temporarily turning off the sound and picture.
Zoom knob
TEMPERATURE WARNING indicator
Illuminates in green normally. When the internal temperature rises, this indicator will illuminate in red.
INPUT button
For switching input mode 1, 2 or 3.
MENU button
For displaying adjustment and setting screens.
VOLUME buttons
For adjusting the speaker sound level.
UNDO button
For undoing an operation or returning to the default settings.
AUTO SYNC button
For automatically adjusting images when connected to a computer.
Focus ring
Foot releases/Adjustment feet
For adjusting the projectors height.
Terminal cover
Speaker
Remote control sensor
Attaching the terminal cover
Attach the terminal cover by placing it on the side panel of the projector and pressing it into place, as shown in the illustration.
8
Projector (Side View)
PG-M20X
INPUT 1 terminal
Port for DVI digital, computer RGB, and COMPONENT signals.
INPUT 2 terminal
Terminal for connecting video equipment with an S-VIDEO terminal.
AC socket
USB terminal
For connecting a compu­ter using a USB cable.
INPUT AUDIO terminal
Shared audio terminal for INPUT 1, INPUT 2, and INPUT 3.
INPUT 3 terminal
For connecting video equipment.
Exhaust vent
Kensington Security Standard connector
Using the Kensington Lock
This projector has a Kensington Security Standard connector for use with a Kensington MicroSaver Security System. Refer to the information that came with the system for instructions on how to use it to secure the projector.
Attaching the lens cap
After putting the lens cap strap on the lens cap, pass the other end of the strap through the hole under the projector, next to the lens, as shown in the illustration.
Bottom View
9
PG-M20X
Remote Control
Remote control signal transmitter
FORWARD/BACK button
Moves forward or backwards when connected to a computer using a USB cable. Same as the [Page Down] and [Page Up] keys on a computer keyboard.
AV MUTE button
For temporarily turning off the sound and picture.
VOLUME buttons
For adjusting the speaker sound level.
INPUT 2 button
For switching the input mode to INPUT 2.
INPUT 1 button
For switching the input mode to INPUT 1.
AUTO SYNC button
For automatically adjusting images when connected to a computer.
LENS button
For adjusting Keystone or Digital Shift setting.
ENTER button
For setting items selected or adjusted on the menu.
POWER button
Turns the power on or off.
ENLARGE (Enlarge/Reduce) buttons
For enlarging or reducing part of the image.
FREEZE button
For freezing images.
INPUT 3 button
For switching the input mode to INPUT 3.
RESIZE button
For switching the screen size (NORMAL, BORDER, etc).
GAMMA button
For correcting the brightness of an image, when the images displayed are hard to see because of the brightness of the room. Four gamma modes are available to choose from.
MENU button
For displaying adjustment and setting screens.
Adjustment buttons (
For selecting menu items.
)
UNDO button
For undoing an operation or returning to the default settings.
10
Connection Pin Assignments
DVI Digital / Analog INPUT 1 port : 29 pin connector
DVI Digital INPUT
•••••••••
9
••••
21
17
••••
18 23
~
~
~
•••••••••
••••
••••
16
87
C1 C2
C4 C5
C3
24
Pin No. Signal Pin No. Signal
10 T.M.D.S data 1+ C1 Not connected 11 T.M.D.S data 1 shield C2 Not connected 12 Not connected C3 Not connected 13 Not connected C4 Not connected 14 +5V current C5 Ground 15 Ground
PG-M20X
1 T.M.D.S data 2– 16 Hot plug detection 2 T.M.D.S data 2+ 17 T.M.D.S data 0– 3 T.M.D.S data 2 shield 18 T.M.D.S data 0+ 4 Not connected 19 T.M.D.S data 0 shield 5 Not connected 20 Not connected 6 DDC clock 21 Not connected 7 DDC data 22 T.M.D.S clock shield 8 Not connected 23 T.M.D.S clock+ 9 T.M.D.S data 1– 24 T.M.D.S clock–
DVI Analog RGB Input
Pin No. Signal Pin No. Signal
1 Not connected 16 Hot plug detection 2 Not connected 17 Not connected 3 Not connected 18 Not connected 4 Not connected 19 Not connected 5 Not connected 20 Not connected 6 DDC clock 21 Not connected 7 DDC data 22 Not connected 8 Vertical sync 23 Not connected
9 Not connected 24 Not connected 10 Not connected C1 Analog input Red 11 Not connected C2 Analog input Green 12 Not connected C3 Analog input Blue 13 Not connected C4 Horizontal sync 14 +5V current C5 Ground 15 Ground
4-pin USB connector
12
USB connector: 4 pin B-type USB connector
Pin no. Signal Name
1 VCC USB current 2 USB– USB data– 3 USB+ USB data+ 4 SG Signal Ground
DVI Analog Component Input
Pin No. Signal Pin No. Signal
1 Not connected 16 Not connected 2 Not connected 17 Not connected 3 Not connected 18 Not connected 4 Not connected 19 Not connected 5 Not connected 20 Not connected 6 Not connected 21 Not connected 7 Not connected 22 Not connected 8 Not connected 23 Not connected
9 Not connected 24 Not connected 10 Not connected C1 Analog input Pr/Cr 11 Not connected C2 Analog input Y 12 Not connected C3 Analog input Pb/Cb 13 Not connected C4 Not connected 14 Not connected C5 Ground 15 Ground
43
11
PG-M20X
Dimensions
Side View Side ViewTop View
Rear View
12
(318.3)
Front View
1
/
8
3 (80)
9
/
16
3
1
(34.2)
5
/
16
(7.5)
1115/
16
(302.5)
3
/4 (223)
8
5
8
/8 (219)
1
5
/16 (128)
1
1
/
2
/
8
9
4
/16 (115.5)
11
7
/16 (195)
1
3
/4 (82.5)
3
2 (55.5)
3
2
/
(60)
8
/
16
(38.7)
3
(76.1)
1
3
(82.9)
/
4
Bottom View
1
4
(104)
/
8
5
10
/
(261.5)
16
Units: inches (mm)
12
REMOVING OF MAJOR PARTS
1. Removal of the top body
1-1. Detach the terminal block cover. 1-2. Remove the five lock screws from the top body. 1-3. Slightly lift the front of the top body and disconnect the speaker connector.
2. Removal of the power PWB unit and cooling fan
2-1. Disconnect the specified connectors. 2-2. Detach the cooling fan. 2-3. Remove the four lock screws from the power unit. 2-4. Remove the three lock screws from the PFC PWB.
Top body
1-2
PG-M20X
1-3
1-2
1-2
1-2
1-1
Terminal cover
1-2
2-3
Power Unit
2-1
2-4
PFC Unit
13
2-1
2-2
Cooling fan
PG-M20X
3. Removal of the PC I/F PWB and input PWB
3-1. Disconnect the specified connectors. 3-2. Remove the three lock screws and two hex screws from the PC I/F PWB. 3-3. Disconnect the connector from the input PWB. 3-4. Remove the three lock screws from the input PWB. 3-5. Remove the lock screw from the terminal block cover.
3-2
3-1
PC I/F Unit
3-3
3-4
3-3
Input Unit
3-5
3-2
14
4. Removal of the operation PWB, optical unit and ballast unit
4-1. Disconnect the specified connectors from each PWB. 4-2. Remove the two lock screws from the operation PWB. 4-3. Remove the six lock screws from the optical unit. 4-4. Remove the lock screw from the ballast unit.
5. Removal of the formatter PWB
5-1. Remove the two lock screws from the heat sink. 5-2. Remove the four lock screws from the backer plate assembly, and detach the formatter PWB.
4-1
4-2
4-2
KEY Unit
4-3
PG-M20X
Ballast Unit
4-4
Optical mechanism Unit
4-1
Bottom body
Formatter Unit
DMD Unit
15
Backer plate Assy
Heat sink
5-1
5-1
PG-M20X
RESETTING THE TOT AL LAMP TIMER
The warning lights on the projector indicate problems inside the projector.
If a problem occurs, either the TEMPERATURE WARNING indicator or the LAMP REPLACEMENT
indicator will illuminate red, and the power will turn off. After the power has been turned off, follow the procedures given below.
About the
POWER indicator
About the TEMPERATURE WARNING indicator
If the temperature inside the projector in­creases, due to blockage of the air vents, or the setting location, “ lower left corner of the picture. If the tem­perature keeps on rising, the lamp will turn off and the TEMPERATURE WARNING in­dicator will blink, the cooling fan will run for further 90 seconds, then the power will be shut off. After “ perform the following measures.
” will blink in the
” appears, be sure to
TEMPERATURE WARNING indicator
LAMP REPLACEMENT indicator
LAMP REPLACEMENT indicator
When the lamp exceeds 1,900 cumulative hours of use, “ on the screen in yellow. When the cumulative hours of use reach 2,000, “ change to red, the lamp will au­tomatically turn off and then the projector as well. At this time , the LAMP REPLACEMENT indica­tor will illuminate in red.
If you try to turn on the projector a fourth time without replacing the lamp, the projector will not turn on.
” will be displa yed
” will
Maintenance indicator Condition Problem Possible Solution
Abnormal
Red on/ Power off
Red blinks
Red on/ Power off
The internal temperature is abnormally high.
Time to change the lamp
The lamp does not illuminate.
Blocked air intake
Cooling fan break-
down
Internal circuit failure
Clogged air intake
Lamp usage time
exceeded 1,900 hours
Burnt-out lamp
Lamp circuit failure
Relocate the projector to an area
with proper ventilation.
Take the projector to your nearest Sharp Authorized Projector Dealer or Service Center for repair.
Take the projector to your nearest Sharp Authorized Projector Dealer or Service Center for repair or lamp replacement.
Please exercise care when replacing the lamp.
TEMPERA-
TURE
WARNING
indicator
LAMP
REPLACE-
MENT
indicator
Normal Abnormal
Off
Green on
Green
blinks
when the
lamp is
active.
Info
If the LAMP REPLACEMENT indicator illuminates, and the power turns off, follow the above possible solu­tions and then wait until the projector has cooled down completely before plugging in the power cord and turning the power back on. (At least 5 minutes.)
If the power is turned off and then turned on again, as during a brief test, the LAMP REPLACEMENT indica­tor may be triggered, preventing the power from going on. Should this occur, take the power cord out of the wall outlet and plug it back in again.
If you want to clean the air vents during projector operation, be sure to first press
and after the power
has turned off and the cooling fan has stopped, then clean the vents.
Do not unplug the power cord after the power has been turned off and while the cooling fan is running. The cooling fan runs for about 90 seconds.
16
PG-M20X
Lamp
It is recommended that the lamp (sold separately) be replaced after approximately 1,900 cumulative
hours of use or when you notice a significant deterioration of the picture and color quality. The lamp usage time can be checked with the on-screen display. See page 58.
For lamp replacement, please consult your nearest Sharp Authorized 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 limited warranty. 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).
U.S.A. ONLY
Caution Concerning the Lamp
This projector utilizes a pressurized mercury lamp. A loud sound may indicate lamp failure. Lamp
failure can be attributed to numerous sour ces such as: excessive shock, improper cooling, surface scratches or 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 and the 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 or flash, it is
recommended that the lamp be replaced with a new one immediately, even if the lamp appears to be operating normally.
Should the lamp break, the glass particles may spread inside the lamp ca ge or gas contained in the
lamp may be vented into the room from the exhaust vent. Because the gas in this lamp includes mercury, ventilate the room well if the lamp breaks and avoid all exposure to the released gas. In case of exposure to the gas, consult with a doctor as soon as possible.
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 or Service Center to remove the damaged lamp and assure safe operation.
Replacing the Lamp
Caution
Do not remove the lamp unit immediately after operation of the projector. The lamp will be hot and touching it can lead to burn or injury.
Wait at least one hour after the power cord is disconnected to allow the surface of the lamp unit to fully cool before removing the lamp unit.
If the new lamp does not light after replacement, take your projector to the nearest Sharp Autho-
rized Projector Dealer or Service Center for repair. Purchase a replacement lamp unit of type BQC­PGM20X//1 from your nearest Sharp Authorized Projector Dealer or Service Center. Then carefully change the lamp by following the instructions described in this section. If you wish, you may have the lamp replaced at your nearest Sharp Authorized Projector Dealer or Service Center.
17
PG-M20X
How to Release the System Lock
Turn on the power. If the system lock is applied, the system-resetting screen appears. Press the following keys in this order.
MENU ENTER ENTER MENU UNDO UNDO MENU
After pressing the MENU key first, press the remaining six keys within 10 seconds.
18
ELECTRICAL ADJUSTMENT
No. Adjustment Items Adjustment Conditions Adjustment Procedures
PG-M20X
1 Initialization of
EEPROM
2 Adjustment of CW
index
3 Adjustment of
RGB gradation reproduction
1. Tur n on the power (the lamp lights up) and warm up the system for 15 minutes.
1. Signal input: 64-step color bar
2. Select the following group and sub­ject. Group: DLP Subject: Select CW-INDEX.
1. Feed the SMPTE pattern signal.
2. Select the following group and sub­ject. Group: DLP Subject: G1-GAIN
1. Carry out the following setting. Press SW2001 to enter the process mode, and ex ecute S2 on SSS menu.
1. Feed the signal to INPUT 1.
2. Select subject and make adjustment so that the lamp gradation patterns of R, G and B should be smooth with­out noise.
R G B
1. Confirm that 100% and 95% white gradation, and 0% and 5% black g r a­dation are discernible.
2. If the white gradation looks differently, do fine adjustment by G1-GAIN.
4 Adjustment of
video brightness/ contrast
5 Adjustment of
video tint
1. Feed the NTSC100% window pat­ter signal. (Burst signal)
2. Select the following group and sub­ject. Group: VIDEO Subject: AUTO
1. Feed the split color bar signal.
2. Select the following group and sub­ject. Group: VIDEO Subject: TINT
19
1. After signal input, select AUTO us­ing the set's switch or the remote controller's button for automatic ad­justment.
1. Confirm the fixed value. Fixed value: 128
PG-M20X
No. Adjustment Items Adjustment Conditions Adjustment Procedures
6 Adjustment of
NTSC color saturation
7 Adjustment of PAL
color saturation
8 Adjustment of
SECAM color saturation
9 Adjustment of
COMPO G bright­ness
1. Feed the internal 8ch (split color bar) signal.
2. Select the following group and sub­ject. Group: VIDEO Subject: N-COLOR
1. Feed the PAL color bar signal.
2. Select the following group and sub­ject. Group: VIDEO Subject: P-COLOR
1. Feed the SECAM color bar signal.
2. Select the following group and sub­ject. Group: VIDEO Subject: S-COLOR
1. Input signal: 0% gray pattern sig­nal (480I)
2. Select the following group and sub­ject. Group: COMPO Subject: G-BRIGHT
1. Confirm the fixed value. Fixed value: 59
1. Confirm the fixed value. Fixed value: 59
1. Confirm the fixed value. Fixed value: 59
1. Feed the signal to INPUT 1. Make adjustment so that some bits should be missing in the picture.
10 Adjustment of
COMP CR-Offset
11 Automatic Adjust-
ment of RGB white balance
12 Automatic Adjust-
ment of SRGB white balance
1. Feed the color difference signal (480I): Y 0% brightness, Cb and Cr 0% white patterns. Group: COMPO Subject: AUTO
1. Feed the 50% gray pattern signal (XGA, 60 Hz).
2. Select the following group and sub­ject. Group: DLP Subjects: R1-GAIN (Red)
B1-GAIN (Blue)
1. Feed the 50% gray pattern signal (XGA, 60 Hz).
2. Select the following group and sub­ject. Group: DLP Subjects: S-R1-GAIN (Red)
S-G1-GAIN (Green) S-B1-GAIN (Blue)
1. After signal input, select AUTO us­ing the set's switch or the remote controller's button for automatic ad­justment.
1. Adjust R-1 GAIN and B1-GAIN so that x-value should be 266±3 and y-value 320±3.
1. Set the value of S-R1-GAIN to 34.
2. Adjust S-G1-GAIN and S-B1-GAIN so that x-value should be 310±3 and y-value 335±3.
20
No. Adjustment Items Adjustment Conditions Adjustment Procedures
PG-M20X
13 Automatic adjust-
ment of video white balance
14 Automatic adjust-
ment of DTV white balance
15 Adjustment of
DLP voltage (For reference)
16 Confirmation and
re-adjustment of white balance
1. Feed the 50% gray pattern signal (NTSC, burst signal).
2. Select the following group and sub­ject. Group: DLP Subjects: V-R1-GAIN (Red)
V-B1-GAIN (Blue)
1. Feed the 50% gray pattern signal (480I, color difference signal).
2. Select the following group and sub­ject. Group: DLP Subjects: C-R1-GAIN
C-B1-GAIN
1. Read voltage rank of DLP descrip­tion.
2. Set the switch corresponding to the rank which has been read. (on the formatter PWB)
1. The adjusting conditions for each item are as follows: For RGB input, see Item 11 For SRGB input, see Item 13 For video input, see Item 14 For DVT input, see Item 12
1. Adjust V -R1-GAIN and V-B1-GAIN so that x-value should be 265±3 and y­value should be 298±3.
1. Adjust C-R1-GAIN and C-B1-GAIN so that x-value should be 263±3 and y-value should be 295±3.
1. Carry out adjustment when DLP chip has been replaced or combination of chip and formatter has been changed.
2. Rank: BCDE Setting value: 1234
Confirm that there is no deviation in white balance from that of the monitoring equipment. For readjustment, proceed in the order of RGB input, video input and DTV in­put.
17 Confirmation of
color-related operation
18 Confirmation of
picture-related operation
19 Confirmation of
RGB
20 Confirmation of
off-timer operation
21 Confirmation of
thermistor opera­tion
1. Receive the color bar signal. 1. Select L1 in the process mode. Check the performance of color and tint.
1. Receive monoscope pattern signal. 1. Se lec t L2 i n th e pr ocess mode. Check Picture, Brightness and Sharp­ness.
1. Receive the RGB signal. 1. Select L4 on the process mode. Check Picture, Brightness, Red, Blue, Clock, Phase, H-POS and V-POS.
1. Select OFF in the process mode. Confirm that the off-timer starts with 5-minute display, counts 1 minute for 1 second, and turns off when 0 minute is displayed.
1. Heat the thermistor by dryer. 1. Confir m that the temperature is dis­played.
21
PG-M20X
No. Adjustment Items Adjustment Conditions Adjustment Procedures
22 Automatic sync
operation
23 Confirmation of
USB operation
24 Factory settings 1. Make the following settings.
1. Receive the phase checking pattern signal.
Connect the set to a personal computer by USB cable.
1. Confirm that Clock, Phase, H-POS and V-POS can be automatically adjusted in the VGA/S-VGA/XGA mode.
Using the remote controller, make sure that feed and return operations are ef­fective on the display of the personal computer.
Process Remote controller adjustment settings
S4 "Factory Setting 4"
How to Adjust the PC I/F unit
1. Initialization of EEPROM
1) Press SW2002 to enter the process mode.
2) Execute S1 on the SSS menu. (By S1, all the contents of EEPROM are initialized.)
3) Confirm that the program version "Ver. XXX" has become the latest one
2. Adjusting items
1) Adjustment of RGB drive/gain (1) feed the window pattern signal that has 100% and 0% signals. (2) Select AUTO among the A/D items in the process mode and carry out adjustment.
22
» Adjustment mode process menu
Group Sub Group Subject
Adjust PC Image A/D R-BRIGHT
Adjust DLP Image DLP R1-BLK
Adjust VIDEO Image VIDEO PICTURE
Adjust Component Image DTV G-BRIGHT
Process mode LINE L1
INTIAL SETTING SSS TIME
Sample Pattern PATTERN RGB
PG-M20X
G-BRIGHT B-BRIGHT R-D B-D G-D AD-AUTO
R1-GAIN G1-BLK G1-GAIN B1-GAIN CW-INDEX S-R1-GAIN S-G1-GAIN S-B1-GAIN C-R1-GAIN C-B1-GAIN V-R1-GAIN V-B1-GAIN
BRIGHT TINT N-COLOR P-COLOR S-COLOR STAT-GAIN VIDEO-AUTO
CB-OFFSET CR-OFFSET COMPO-AUTO
L2 L3 OFF TEMP OFF SENSOR CHECK
S1 S2 S3 S4 S5
RGB(50) CROSS SETP COLOR CHR
23
PG-M20X
Group Sub Group Subject
Adjust CVIC CVIC-PROGRSSIVE MODE
IP MDSW PTGSW C-TESTSW C-ILG-LY C-MOD-LY C-VE-LV
CVIC-ENHANCE-VIDE ENH-PLUS
ENH-MINUS DFC
CVIC-ENHANCE-HTTV ENH-PLUS
ENH-MINUS DFC
CVIC-ENHANCE-RGB ENH-PLUS
ENH-MINUS DFC
CVIC-SCREEN CUBIC-RGB
CUBIC-VEDEO
CVIC-NR YNR-LEVEL
YNR-K YNR-FSEL CNR-LEVEL CNR-K CNR-FSEL
CNR-FILSW CVIC-PTG TBL-NO CVIC-CMS RED
YELLOW
GREEN
VYAN
BLUE
MAGENTA
Version Check etc Special IPL
IPL2
E2PROM
ADR RD/WR
24
Checking of Basic Operation
PG-M20X
TROUBLE SHOOTING TABLE
Does the POWER LED light up or flicker in red or green?
Yes
Does the set operate by the set's key or the remote controller's power key?
Yes
Does the cooling fan rotate and does the lamp light up?
Yes
Is the user menu displayed?
Yes
Does the RGB input operate normally?
Yes
Does the video input operate normally?
Yes
No
No
No
No
No
No
Go to "Checking of Power Unit".
Go to "Checking of Sub-microcomputer and Its Periphery"
Go to "Checking of Lamp Lighting-up"
Check the formatter circuit and its periphery.
Check IC8013 (AD) and go to "Checking of RGB Input".
Check IC8015 and peripheral circuit.
Do the component input/DVI input operate normally?
Yes
Does the DVI input operate normally?
Yes
End
No
No
Is there input signal at pins (8), (17) and (23) of IC8013?
Go to "Checking of Video Input". Is there input signal at the emitter of Q8002?
Yes
Check IC8015 and its peripheral circuit.
No
No
Check IC3851 and its peripheral circuit.
Check IC3502 and its peripheral circuit.
25
PG-M20X
Checking of Power Unit
Are connectors in the power unit completely inserted?
Yes
Is the lamp door closed completely?
Yes
Is the bimetal switch turned off?
Yes
Is AC voltage applied across relay RL7001?
Yes
No
No
No
No
Insert the connectors CN702, CN704, CN7003, CN7001, CN7004 and CN7101 completely.
Close the lamp door completely by screws.
Replace the bimetal switch, or rest it by pressing the red button.
Replace F701.
Is there DC voltage of about 6V at pin (1) of CN7002?
Yes
Is there DC voltage of about 370V across CN702?
Yes
Is there rated voltage at the output terminals of CN7001 and CN7102?
Yes
Check the PWB circuits of relevant output sides.
No
No
No
Check Q7501, Q7502 and Q7503 and their peripheral circuits. If any circuit is damaged, replace it.
Check the circuits connected to the primary side of T701. If any circuit is damaged, replace it.
Check the circuits connected to the secondary side of T701. If any circuit is damaged, replace it.
26
Lamp Does Not Light Up.
PG-M20X
Is any of SC9001, SC9002, P9002 and P9003 connectors disconnected or in poor contact?
No
Is an appropriate voltage supplied to SC9002?
Yes
Is there the 180-Hz pulse signal at pin (1) of P9002?
No
Is the color wheel rotating?
Yes
Is there the 180-Hz pulse signal at pin (2) of P9003 when no input signal is given?
Yes
Yes
No
Yes
No
No
Insert the connectors completely.
Go to "Checking of Input PWB"
Go to "Checking of Lamp" and "Checking of Ballast"
Go to "Color Wheel Does Not Rotate."
Go to "Checking of Input PWB"
Is the signal at pin (10) of IC9101 at High level?
Yes
Is the signal at pin (9) of IC9101 at High level?
Yes
Trouble with 1C9101 or its peripheral part.
No
No
Go to "Checking of PC I/F unit"
No
Are the signals at pins (69) and (70) at High level?
Yes
Trouble with IC9003
27
PG-M20X
Lamp does not light up.
Yes
Is the cooling fan rotating?
Yes
Is the color wheel rotating sound heard?
Yes
Is the lamp discharging sound heard?
No
No
No
Yes
Check the power circuit or the fan circuit on the key/input PWB.
Check IC3101, the motor driver circuit and their periphery. Check the waveform of SC3101.
Normal Abnormal
Replace the color wheel.
Check the socket
Check the formatter PWB.
No
Replace the lamp.
Is DC 34V voltage applied across the ballast power?
Yes
Is voltage higher than 3.5V applied to pin (19) of P9002 on the formatter PWB?
Yes
Check the ballast power.
No
No
Check the power circuit.
Check IC9101 and its periphery on the formatter PWB.
28
No
Yes
Does POWER LED flicker in red (for 2 seconds)?
No
Is there B+3.3V output at pins (12) and (13) of CN3701?
Is there 6V output at pins (5) and (6) of P2003?
Yes
Go to "Checking of PC I/F Unit", and check the flexible connector. Communication error of sub-microprocessor (KEY) and SH microprocessor (PC I/F unit) Pins (20) and (21) of P2001.
Yes
Go to "Checking of Power Unit"
Check Q2001 thru Q2004 of IC2001.
No
No
Yes
Is Bu+6.2V signal outputted?"
Go to "Checking of Power Unit"
Yes
No
Is Bu+3.3V signal outputted?
Check IC2010 and its periphery.
Check IC2002 and its periphery.
Yes
No
Is 3.3V signal output at pin (19) of IC2001?
Check IC2001 and its periphery and go to "Checking of Remote Control Communication".
Checking of Sub-microprocessor and Its Periphery
PG-M20X
29
PG-M20X
Checking of Low-pass Filter Circuit
Is video signal is inputted to pins (4), (8) and (12) of IC3851?
Yes
Is video signal inputted to pins (24), (21) and (17) of IC3851?
Yes
Is video signal is inputted to pins (16), (20) and (24) of SC3001?
Yes
The low-pass filter circuit on the input PWB is normal. Does the picture appear?
Yes
No
No
No
No
Check pins (4), (8) and (12) of SC3001.
Normal Abnormal
Check Q3854 and Q3855.
IC3851 is defective. If the picture quality is abnormal, check whether or not the following voltages are outputted to pin (28) of IC3851.
0.3 V for 480i, 1 V for 720p, 1080i, Check IC301.
Check Q3851, Q3852 and Q3853 and their periphery.
Is the video signal inputted to pins (8), (17) and (23) of IC8013 (AD9888) of the PC I/F unit?
Yes No
Check the PC I/F unit. Check DVI (analog) input.
End
Check the SOG circuit or IC8013 and its periphery.
30
Check IC8013 and its periphery.
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