DIGITAL MULTIMEDIA PROJECTOR
DIGITALER MULTIMEDIA PROJEKTOR
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.
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 Ω
INIJACK
: AUDIO, 0.5 Vrms, more than 47 kΩ (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
22
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.
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.
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)
23456789012345678901234567890121234567890123
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 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
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
D’ELECTR OCUTION NE
PASRETIRER LES VIS, A
L’EXCEPTION DES VIS DE
REPARATION UTILISATEUR
SPECIFIEES
ATTENTION: POUR EVITER TOUT RISQ UE
D’ELECTR OCUTION, NE PAS RETIRER LE CAPOT.
AUCUNE DES PIECES INTERIEURES N’EST REPARABLE
PAR L ’UTILISATEUR, A L’EXCEPTION DE L’UNITE DE
LAMPE. POUR T OUTE REPARATION, 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.
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:
LFa
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.★DescriptionCode
ZHNDAi123250EJφ0.3mm250g(1roll)BL
ZHNDAi126500EJφ0.6mm500g(1roll)BK
ZHNDAi12801KEJφ1.0mm1kg(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 projector’s
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
••••
1823
~
~
~
•••••••••
••••
••••
16
87
C1
C2
C4
C5
C3
24
Pin No. SignalPin No. Signal
10T.M.D.S data 1+C1Not connected
11T.M.D.S data 1 shieldC2Not connected
12Not connectedC3Not connected
13Not connectedC4Not connected
14+5V currentC5Ground
15Ground
PG-M20X
1T.M.D.S data 2–16Hot plug detection
2T.M.D.S data 2+17T.M.D.S data 0–
3T.M.D.S data 2 shield18T.M.D.S data 0+
4Not connected19T.M.D.S data 0 shield
5Not connected20Not connected
6DDC clock21Not connected
7DDC data22T.M.D.S clock shield
8Not connected23T.M.D.S clock+
9T.M.D.S data 1–24T.M.D.S clock–
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.
• 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
NormalAbnormal
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.
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.
17Confirmation of
color-related
operation
18Confirmation of
picture-related
operation
19Confirmation of
RGB
20Confirmation of
off-timer operation
21Confirmation 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.
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.
ProcessRemote 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.
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.
NormalAbnormal
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.
NormalAbnormal
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?
YesNo
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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