Sharp XGMB67X Service Manual

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XG-MB67X

SERVICE MANUAL

No. S36S2XG-MB67X

MULTIMEDIA 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-MB67X

CONTENTS

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY NOTES.............i

Precautions for using lead-free solder ..............vi

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS ......................................... 1-1

CHAPTER 2. OPERATION MANUAL

[1] Operation Manual........................................... 2-1

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS ................................................ 3-1

CHAPTER 4. REMOVING OF MAJOR PARTS

[1] REMOVING OF MAJOR PARTS ................... 4-1

CHAPTER 9. MAJOR IC INFOMATIONS

[1] MAJOR IC INFOMATIONS............................9-1

CHAPTER 10. BLOCK DIAGRAM/OVERALL WIRING DIAGRAM

[1] BLOCK DIAGRAM.......................................10-1

[2] OVERALL WIRING DIAGRAM ....................10-3

CHAPTER 11. PRINTED WIRING BOARD

[1] MAIN Unit ....................................................11-1

[2] DMD Unit ..................................................... 11-9

[3] POWER Unit.............................................. 11-11

[4] BALLAST CONTROL Unit ......................... 11-17

[5] PHOTOSENSOR Unit ............................... 11-19

[6] R/C Unit ..................................................... 11-20

CHAPTER 5. RESETTING THE TOTAL LAMP TIMER

[1] Resetting the total lamp timer ........................ 5-1

CHAPTER 6. THE OPTICAL UNIT OUTLINE

[1] THE OPTICAL UNIT OUTLINE...................... 6-1

CHAPTER 7. ELECTRICAL ADJUSTMENT

[1] ELECTRICAL ADJUSTMENT........................ 7-1

[2] Adjustment mode process menu.................... 7-4

[3] Adjustment of ballast unit output power

(lamp power) .................................................. 7-5

CHAPTER 8. TROUBLE SHOOTING TABLE

[1] TROUBLE SHOOTING TABLE...................... 8-1

Parts marked with " " are important for maintaining the safety of the set. Be sure to replace these parts with specified ones for maintaining the safety and performance of the set.

CHAPTER 12. WAVEFORMS

[1] WAVEFORMS .............................................12-1

CHAPTER 13. SCHEMATIC DIAGRAM

[1] DESCRIPTION OF SCHEMATIC DIA-

GRAM..........................................................13-1

[2] SCHEMATIC DIAGRAM ..............................13-2

Parts Guide

This document has been published to be used for after sales service only. The contents are subject to change without notice.

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XG-MB67X

SAFETY PRECAUTION

IMPORTANT SERVICE SAFETY NOTES

IMPORTANT SERVICE SAFETY NOTES (for USA)

Service work should be performed only by qualified service technicians who are thoroughly familiar with all safety checks and servicing guidelines as follows:

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.

Service Manual

Use an AC voltmeter with sensitivity of 5000 ohm per volt., or higher, sensitivity to measure the AC voltage drop across the resistor. 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.

DVM

AC SCALE

1.5k ohm 10W

0.15 µF

TEST PROBE

TO EXPOSED METAL PARTS

CONNECT TO KNOWN EARTH GROUND

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SAFETY NOTICE

Many electrical and mechanical parts in DMD™ 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 “ ” 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.

WARNING: The bimetallic component has the primary

conductive side exposed. Be very careful in handling this component when the power is on.

AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans les projecteur à DMD™ 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 “ ” 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.

AVERTISSEMENT: La composante bimétallique dispose du

conducteur primaire dénudé. Faire attention lors de la manipulation de cette composante sous tension.

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XG-MB67X

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ne peut effectuer la réparation qu' un technicien spécialisé qui s'est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants.

AVERTISSEMENT

1. N'entreprendre aucune modification de tout circuit. C'est dangereux.

2. Débrancher le récepteur avant toute réparation.

VERIFICATIONS CONTRE L'INCEN-DIE ET LE CHOC ELECTRIQUE

Avant de rendre le récepteur à l'utilisateur, effectuer les vérifications suivantes.

1. Inspecter tous les faisceaux de câbles pour s'assurer que les fils ne soient pas pincés ou qu'un outil ne soit pas placé entre le châssis et les autres pièces métalliques du récepteur.

2. Inspecter tous les dispositifs de protection comme les boutons de commande non-métalliques, les isolants, le dos du coffret, les couvercles ou blindages de réglage et de compartiment, les réseaux de résistance-capacité, les isolateurs mécaniques, etc.

3. S'assurer qu'il n'y ait pas de danger d'électrocution en vérifiant la fuite de courant, de la facon suivante: Brancher le cordon d'alimentation directem-ent à une prise de courant de 120 V. (Ne pas utiliser de transformateur d'isolation pour cet essai). A l'aide de deux fils à pinces, brancher une résistance de 1.5 kΩ 10 watts en parallèle avec un condensateur de 0.15µF en série avec toutes les pièces métalliques exposées du cof fret et une terre connue comme une

conduite électrique ou une prise de terre branchée à la terre. Utiliser un voltmètre CA d'une sensibilité d'au moins 5000Ω/V pour mesurer la chute de tension en travers de la résistance. Toucher avec la sonde d'essai les pièces métalliques exposées qui présentent une voie de retour au châssis (antenne, coffret métallique, tête des vis, arbres de commande et des boutons, écusson, etc.) et mesurer la chute de tension CA en-travers de la résistance. Toutes les vérifications doivent être refaites après avoir inversé la fiche du cordon d'alimentation. (Si nécessaire, une prise d'adpatation non polarisée peut être utilisée dans le but de terminer ces vérifications.) Tous les courants mesurés ne doivent pas dépasser 0.2 mA. Dans le cas contraire, ilyaunepossibilité de choc électrique qui doit être supprimée avant de rendre le récepteur au client.

DVM

ECHELLE CA

1.5k ohm 10W

AUX PIECES METALLIQUES EXPOSEES

0.15 µF

SONDE D'ESSAI

BRANCHER A UNE TERRE CONNUE

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XG-MB67X

NOTE TO SERVICE PERSONNEL

//////////////////////////////////////////////////////////////

UV-RADIATION PRECAUTION

//////////////////////////////////////////////////////////////

The light so urce, UHP lamp, in the LCD projector emits small amounts of UV-Radiation.

AVOID DIRECT EYE AND SKIN EXPOSURE.

To ensure safety please adhere to the following:

1. Be sure to wear sun-glasses when servicing the projector with the lamp turned “on” and the top enclosure removed.

2. 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 UHP, 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 AN-XR20LP rated 300 W DC.

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 AN-XR20LP, caractéristique 300 W-DC.

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.

iii

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XG-MB67X

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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

[Use original replacement only.]

Lamp

Reflector

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)

////////////////////////////////////////////////////////////////

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 . [N’utiliser qu’un remplacement d’origine.]

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.

Lampe

Reflecteur

Since small amounts of UV-radiation are emitted from an opening between the exhaust fans, it is recommended to place the cap of the optional lens on the opening during servicing to avoid eye and skin exposure.

To illuminate the lamp in the unit with Top Body removed, attach the above Service Top Body (DBDYTA132WJZZ). If not, problems may be caused by UV light emitted from the lamp.

Top Body Part code:DBDYTA132WJZZ

Comme de petites quantités de radiation UV sont émises par une ouverture entre les ventilateurs aspirants, il est recommandé de placer le capuchon de l’optique optionnelle sur l’ouverture pendant l’entretien pour éviter une exposition des yeux et la peau.

Pour allumer la lampe de l'appareil après avoir retiré l'enveloppe supérieure, fixer l'enveloppe supérieure de service ci-dessus (DBDYTA132WJZZ). Dans le cas contraire, il peut se produire un problème dû à l'émission de rayons UV.

Enveloppe supérieur Code de pièce:DBDYTA132WJZZ

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XG-MB67X

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 ELEC TRIC 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 PARTS 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

(POWER Unit)

6.3A 250V

For continued protection against a risk of fire, replace only with same type

6.3A, AC250V fuse. (F701)

//////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

AVERTISSEMENT: Source lumineuse de grande intensité. Ne pas fixer le faisceau lumineux ou le regarder

directement. Ve

iller particulièrement à éviter que les enfants ne fixent directement le

faisceau lumineux.

AVERTISSEMENT: AFIN D’EV

ITER TOUT RISQUE D’INCENDIE OU D’ELECTROCUTION, NE PAS PLACER

CET APPAREIL DANS UN ENDROIT HUMIDE OU MOUILLE.

ATTENTION

RISQUE D’ÉLECTROCUTION. NE PASR ETIRER LES VIS Á

L’EXCEPTION DE LA VIS DE REPARATION UTILISATEUR

SPECIFIEES

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

ATTENTION: POUR EVITER TOUT RISQUE

D’ELECTROCUTION, NE PAS RETIRER LE CAPOT.

AUCUNE DES PIECES INTERIEURES N’EST REPARABLE

PAR L’UTILISATEUR, A L’EXCEPTION DE L’UNITE DE

LAMPE. POUR TOUTE REPARATION, S’ADRESSER A UN

TECHNICIEN D’ENTRETIEN QUALIFIE.

triangle indique à l’utilisateur que les instructions de fonctionnement et d’entretien sont détaillées dans les documents fournis avec le projecteur.

PRECAUTION

(Unité de PUTSSANCE)

6.3A 250V

Pour une protection continue contre un risques d’incendie, ne remplacer qu’avec un fusible 6.3A,AC250V

du même type.

(F701)

Page 7

XG-MB67X

Precautions for using lead-free solder

Employing lead-free solder

• "PWBs" of this model employs lead-free solder. The LF symbol indicates lead-free solder, and is attached on the PWBs and service manuals. The alphabetical character following LF shows the type of lead-free solder.

Example:

L Fa

Indicates lead-free solder of tin, silver and copper.

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 40 °C, we recommend you to use a dedicated soldering bit, if you are not familiar with how to obtain lead-free wire solder or soldering bit, contact our service station or service branch in your area.

Soldering

• As the melting point of lead-free solder (Sn-Ag-Cu) is about 220 °C which is higher than the conventional lead solder by 40 °C, and as it has poor solder wettability, you may be apt to keep the soldering bit in contact with the PWB for extended period of time. However, Since the land may be peeled off or the maximum heat-resistance temperature of parts may be exceeded, remove the bit from the PWB as soon as you confirm the steady soldering condition.

Lead-free solder contains more tin, and the end of the soldering bit may be easily corroded. Make sure to turn on and off the power of the bit 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.

• Be careful 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

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XG-MB67X

CHAPTER 1. SPECIFICATIONS

[1] SPECIFICATIONS

Product type Projector

Model XG-MB67X

Video system NTSC3.58/NTSC4.43/PAL/PAL-M/PAL-N/PAL-60/SECAM/DTV480I/DTV480P/DTV540P/

DTV576I/DTV576P/DTV720P/DTV1035I/DTV1080I/DTV1080I-50

Display method Single Chip Digital Micromirror DeviceTM (DMDTM) by Texas Instruments

DMD panel Panel size: 0.55" (14 mm), 1chip XGA DMD

No. of dots: 786,432 dots (1,024 [H] x 768 [V])

Lens 1–1.15 x zoom lens, F2.4–2.6, f = 18.7–21.5 mm

Projection lamp 300 W DC lamp

Component input signal 15-pin mini D-sub connector

(INPUT1/2) Y: 1.0 Vp-p, sync negative, 75 Ω terminated

PB: 0.7 Vp-p, 75 Ω terminated PR: 0.7 Vp-p, 75 Ω terminated

Horizontal resolution 600 TV lines (DTV720P)

Computer RGB input 15-pin mini D-sub connector

(INPUT 1/2)/output RGB separate/sync on green type analog input: 0–0.7 Vp-p, positive, 75 Ω terminated

(OUTPUT) signal HORIZONTAL SYNC. SIGNAL: TTL level (positive/negative)

VERTICAL SYNC. SIGNAL: Same as above

S-video input signal 4-pin mini DIN connector

(INPUT 3) Y (luminance signal): 1.0 Vp-p, sync negative, 75 Ω terminated

C (chrominance signal): Burst 0.286 Vp-p, 75 Ω terminated

Video input signal RCA connector: VIDEO, composite video, 1.0 Vp-p, sync negative, 75 Ω

(INPUT 4) terminated

Vertical frequency 45–85 Hz

Horizontal frequency 15–70 kHz

Pixel clock 12–108 MHz

RS-232C terminal 9-pin mini DIN connector

LAN terminal 8-pin RJ-45 modular connector

Audio input signal φ3.5 mm minijack or RCA terminal: 0.5 Vrms, more than 22 kΩ (stereo)

Audio output signal φ3.5 mm minijack: 0.5 Vrms, less than 2.2 kΩ

(AUDIO OUTPUT 1-4)

Speaker system 4 cm x 2.85 cm oval x 1

Rated voltage AC 110–240 V

Input current 3.6 A

Rated frequency 50/60 Hz

Power consumption 385 W (Lamp Setting “Bright”)/

308 W (Lamp Setting “Eco + Quiet”) with AC 110 V 367 W (Lamp Setting “Bright”)/ 300 W (Lamp Setting “Eco + Quiet”) with AC 240 V

Power consumption (standby) 4.7 W (AC 110 V) – 5.6 W (AC 240 V)

Heat dissipation 1,450 BTU/hour (Lamp Setting “Bright”)/

1,160 BTU/hour (Lamp Setting “Eco + Quiet”) with AC 110 V 1,380 BTU/hour (Lamp Setting “Bright”)/ 1,130 BTU/hour (Lamp Setting “Eco + Quiet”) with AC 240 V

Operating temperature 41°F to 95°F (+5°C to +35°C)

Storage temperature –4°F to 140°F (–20°C to +60°C)

Cabinet Plastic

I/R carrier frequency 38 kHz

Dimensions (approx.) 12 13/32" x 4 19/64" x 11 1/32" (315 (W) x 109 (H) x 280 (D) mm) (main body only)

12 13/32" x 4 47/64" x 11 37/64" (315 (W) x 120 (H) x 294 (D) mm) (including adjustment foot and projecting parts)

Weight (approx.) 8.6 lbs. (3.9 kg)

Replacement parts Remote control, Power cord for U.S. and Canada, etc., Power cord for Europe, except U.K.,

Power cord for U.K. and Singapore, Power cord for Australia, New Zealand and Oceania, RGB cable, DIN-D-sub RS-232C adaptor, Operation manual (Printed and CD-ROM)

Service Manual

As a part of policy of continuous improvement, SHARP reserves the right to make design and specification changes for product improvement without prior notice. The performance specification figures indicated are nominal values of production units. There may be some deviations from these values in individual units.

1 – 1

Page 9

XG-MB67X

CHAPTER 2. OPERATION MANUAL

[1] Operation Manual

Top View

XG-MB67X

Service Manual

Front View

2 – 1

Page 10

XG-MB67X

Front View

2 – 2

Page 11

XG-MB67X

2 – 3

Page 12

XG-MB67X

2 – 4

Page 13

Rear View

XG-MB67X

2 – 5

Page 14

XG-MB67X

Connecting Pin Assignments

COMPUTER-RGB/COMPONENT INPUT 1, 2 and COMPUTER-RGB/COMPONENT OUTPUT Terminals

15-pin mini D-sub female connector

COMPUTER-RGB Input/Output

1. Video input (red)

2. Video input (green/sync on green)

3. Video input (blue)

4. Not connected

5. Not connected

6. Earth (red)

7. Earth (green/sync on green)

8. Earth (blue)

9. Not connected

10. GND

11. Not connected

12. Bi-directional data

13. Horizontal sync signal:TTL level

14. Vertical sync signal: TTL level

15. Data clock

Component Input/Output

1. PR(CR)

2. Y

B(CB

3. P

4. Not connected

5. Not connected

6. Earth (P

7. Earth (Y)

8. Earth (P

9. Not connected

10. Not connected

11. Not connected

12. Not connected

13. Not connected

14. Not connected

15. Not connected

)

RS-232C Terminal: 9-pin mini DIN female connector

Pin No. Signal Name I/O Reference

1 Not connected 2 RD Receive Data Input Connected to internal circuit 3 SD Send Data Output Connected to internal circuit 4 Not connected 5 SG Signal Ground Connected to internal circuit 6 Not connected 7 RS Request to Send Connected to CS in internal circuit 8 CS Clear to Send Connected to RS in internal circuit 9 Not connected

RS-232C Terminal: 9-pin D-sub male connector of the DIN-D-sub RS-232C adaptor

Pin No. Signal Name I/O Reference

RS-232C Cable recommended connection: 9-pin D-sub female connector

Pin No. Signal Pin No. Signal

1CD 1 CD 2RD 2 RD 3SD 3 SD 4ER 4 ER 5SG 5 SG 6DR 6 DR 7RS 7 RS 8CS 8 CS 9CI 9 CI

Note:

Depending on the controlling device used, it may be necessary to connect Pin 4 and Pin 6 on the controlling device (e.g. computer).

Projector

Pin No.

4 5 6

Computer

Pin No.

4 5 6

LAN Terminal : 8-pin RJ-45 modular connector

Pin No. Signal Pin No. Signal

1TX+ 5 2TXÐ 6 RXÐ 3RX+ 7

8...1

2 – 6

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XG-MB67X

CHAPTER 3. DIMENSIONS

[1] DIMENSIONS

XG-MB67X

Service Manual

3 – 1

Page 16

XG-MB67X

CHAPTER 4. REMOVING OF MAJOR PARTS

Service Manual

[1] REMOVING OF MAJOR PARTS

1. Removing the lamp door and the lamp unit

1. Loosen the lamp door fixing screw. Lift off the lamp door.

2. Remove 2 lamp unit fixing screws to detach the lamp unit.

3. Detach the filters.

1-1

Lamp Door

1-2

1-3

Filters

Lamp Unit

4 – 1

Page 17

2. Removing the top body

1. Remove 8 top body fixing screws to detach the Top body.

XG-MB67X

Top Body

Bottom Body

2-1

3. Removing the main PWB unit

1. Remove all connectors from the main PWB unit.

2. Remove 2 terminal fixing screws.

3. Remove 3 main PWB fixing screws to detach the main PWB unit.

3-3

[LF2]

MAIN PWB Unit

[RC]

[US]

[CW]

[FA]

[MO]

[SO]

[LF]

[EA]

[FB]

3-1

[BB]

[TH2]

[FD]

[FC]

[CP]

3-3

3-2

4 – 2

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XG-MB67X

4. Removing the speaker, fan, and power / ballast ass’y

1. Remove the speaker.

2. Remove 2 fans for the power/ballast ass’y and 1 fan for the optical mechanism unit.

3. Remove 2 bimetal fixing screws to detach the bimetal.

4. Remove 2 lamp socket fixing screws to detach the lamp socket.

5. Remove 1 inlet fixing screw.

6. Remove 4 ballast unit fixing screws to detach the power/ballast ass’y.

7. Remove 4 ballast shield (upper) fixing screws to detach the ballast shield (upper).

8. Remove 2 ballast PWB fixing screws and 1 clip to detach the power PWB unit from the ballast shield (lower).

POWER/BALLAST Ass'y

Lamp Socket

Fans for power supply ballast unit

Fan for optical mechanism unit

4-2

4-3

4-6

4-4

Bimetal

4-1

Speaker

4-5

4-7

POWER/ BALLAST Ass'y

Ballast shield (upper)

4-7

4-8

Ballast shield (lower)

4-8

4 – 3

Page 19

5. Removing the optical mechanism unit and RC light receiver PWB

1. Remove 4 optical mechanism unit fixing screws to detach the optical mechanism unit.

2. Remove the R/C PWB unit.

5-1

XG-MB67X

Optical Mechanism Unit

R/C PWB

5-2

6. Removing the photosensor PWB unit, blower fan, DMD PWB, and DMD

1. Remove 1 photosensor PWB fixing screw to detach the photosensor PWB unit.

2. Remove 2 blower fan fixing screws to detach the blower fan.

3. Remove 4 DMD heatsink fixing screws to detach the DMD PWB unit and the DMD.

DMD

DMD socket

DMD PWB Unit

Backer plate

DMD heatsink

DMD spring

6-2

Blower fan

6-3

Photosensor PWB Unit

6-1

Optical Mechanism Unit

4 – 4

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XG-MB67X

CHAPTER 5. RESETTING THE TOTAL LAMP TIMER

Service Manual

[1] Resetting the total lamp timer

When replacing the lamp, reset the total lamp timer in the procedure below.

The RS-232C command also enables the lamp timer to reset.

Control Command Parameter Return

Lamp Timer Reset LPRE 0001 OK or ERR

However, transmission is possible only when the set is in the stand-by mode.

Lamp

• It is recommended that the lamp (sold separately) be replaced when the remaining lamp life becomes 5% or less, or when you notice a significant deterioration in the picture and color quality. The lamp life (percentage) can be checked with the on-screen display.

• Purchase a replacement lamp of type AN-XR20LP from your place of purchase, nearest Sharp Authorized Projector Dealer or Service Center.

• The warning lights (power indicator, lamp indicator and temperature warning indicator) on the projector indicate problems inside the projector.

• If a problem occurs, either the temperature warning indicator or the lamp indicator will illuminate red, and the projector will enter standby mode. After the projector has entered standby mode, follow the procedures given below.

5 – 1

Page 21

XG-MB67X

• Keystone correction range expansion and vertical compression adjustment function

The variable range of the keystone can be expanded to over the user adjustable range by using the following RS-232C commands. In addition, the vertical compression can be adjusted.

Command description

Control Command Parameter Return

Disabling function BKLM _0 OKorERR Enabling function BKLM _1 OKorERR Keystone correction range expansion (-200 - +200) BKST * * * * OKorERR Vertical compression adjustment (-300 - +300) BKVO * * * * OKorERR

5 – 2

Page 22

XG-MB67X

CHAPTER 6. THE OPTICAL UNIT OUTLINE

Service Manual

[1] THE OPTICAL UNIT OUTLINE

Layout for proper setup of the optical components and parts (top view)

(Schematic diagram)

Projection lens

Illumination lens 2

Reflection mirror

Illumination lens 1

Plastic Lens

Color wheel

DMD

Item Function

Lamp Light source. DC high-pressure mercury lamp. UV/IR cut filter (UV GLASS) Filters out harmful UV and IR rays from the lamp. Color wheel Splits light from the light source into R, G, B and W through a color filter. Rod (ROD INTEGRATOR) Assures uniform light ray. Illumination lens (ILLUMINATION LENS 1, 2) Reflection mirror Reflects light from the illumination lenses toward DMD. Condencer Lens

(PLASTIC LENS) DMD Turns the internal micromirror ON/OFF at the rate of color component of each dot of the input source

Projection lens Enlarges light from DMD and projects it on a screen.

Focus light from the rod on DMD.

Condenses the light from the reflection mirror to the DMD and the pupil of the projection lens.

to reflect light.

Rod Integrator

UV Glass

Lamp

6 – 1

Page 23

XG-MB67X

If shading shown in Figure 1 appears on the screen after replacing DMD, turn the adjustment screw of the optical engine to adjust the lighting area of DMD.

1. Loosen the adjustment lever fixing screw . After adjusting the lighting area with the adjustment lever , tighten the adjustment lever fixing

screw .

Tightening order: 1234 Screw torque: 0.44 ± 0.05 N·m

When mounting DMD, tighten the 4 screws evenly.

Fig. 1

Shading

6 – 2

Page 24

XG-MB67X

CHAPTER 7. ELECTRICAL ADJUSTMENT

Service Manual

[1] ELECTRICAL ADJUSTMENT

No. Adjusting point Adjusting conditions Adjusting procedure

1 EEPROM initialization 1. Turn on the power (with the lamp on) and

warm up the set for 15 minutes.

2 Model setting (Process menu)

1. Select the following group and subject. Group: CONFIRM Subject: MODEL

3 Adjustment of CW index 1. Signal input: Send 256 STEP color bar.

XGA series (XGA60HZ)

2. Select the following group and subject. Group: ADJUST CW/Auto KS Subject: CW-INDEX.

•Make the following settings. Press S2551 to call the process mode and execute "SS2" on SS menu.

1. Set as below. Default: 1

1. Feed the signal to input 1.

2. Select the adjustment item and adjust the lamp gradation patterns of RGBW so that smooth patterns without noise appear.

4 R/G/B contrast adjustment

(manual or automatic)

5 RGB white balance adjustment 1. Feed the 50% gray signal.

6 sRGB white balance adjustment 1. Feed the 50% gray signal.

7 Auto keystone initialization

and audio output check

1. Select the following group and subjects. Group : ADJUST AD/DLP Subject : R-CONT G-CONT B-CONT (Process GAMMA interlock)

2. Feed white signal with the amplitude level of 96% (0.67Vpp). XGA series (XGA60HZ)

XGA series (XGA60HZ)

2. Select the following group and subjects. Group : ADJUST AD/DLP Subject : R-GAIN G-GAIN B-GAIN

XGA series (XGA60HZ)

2. Select the following group and subjects. Group : CONFIRM/DLP Subject : S-G-OS S-B-OS

Select the following group and subjects. Group : ADJUST CW/Auto KS Subject : CAL

1. Measure chromaticity of the 96% white wind pattern using CA100.

2. On the screen where bit dropouts occur, raise the values of R/G/B-Contrast. Adjust the values so that bright red, green, and blue bit dropouts appear on a black background; and amounts of change in x value of R and y values of G/B become 100/1000 or more.

3. If adjustment is performed manually watching the screen, make adjustment so that bright red, green, and blue bit dropouts appear on more than half of the screen.

1. Raise the values of two of R/G/B-GAIN (default:

100) so that the following chromaticity values are obtained using CL200. x value: 300 ± 5 y value: 320± 5

1. Adjust S-G-OS and S-B-OS so that the following chromaticity values are obtained using CL200. x value: 313 ± 5 y value: 329 ±5

1. With the set placed on a level surface, press the ENTER key and check that K-SENS value is 0 ±3. Check that keystone is caused by tilting the unit.

2. Check that the start-up sound is heard from the speaker when the ENTER key is pressed.

7 – 1

Page 25

Check items

No. Adjusting point Adjusting conditions Adjusting procedure

1 Adjustment of RGB brightness 1. Select the following group and subjects.

Group : CONFIRM/AD Subject : R-BRIGHT G-BRIGHT B-BRIGHT (Process GAMMA interlock)

2 Adjustment of Component offset 1. Feed 10-step signal with 480P component

3 Adjustment of DLP Brightness 1. Select the following group and subject.

4 Video Contrast adjustment 1. Feed NTSC 100% wind pattern signal.

5 Adjustment of Video Brightness 1. Feed NTSC 100% wind pattern signal.

6 Adjustment of Video Tint 1. Feed split color bar.

7 Adjustment of Video color satura-

tion

8 RGB tone reproduction adjust-

ment

100% amplitude.

2. Select the following group and subjects. Group :CONFIRM/AD Subject : C-R-OS C-B-OS (Process GAMMA interlock)

Group : CONFIRM/DLP Subject :R-BLK G-BLK B-BLK (Process GAMMA interlock)

(Signal with burst)

2. Select the following group and subjects. Group : CONIRM/ VIDEO Subject : V-CONT

(Signal with burst)

2. Select the following group and subject. Group : CONFIRM/VIDEO Subject : V-BRIGHT

2. Select the following group and subject. Group : CONFIRM/VIDEO Subject : V-HUE

1. Select the following group and subject. Group : CONFIRM/VIDEO Subject : V-COLOR

1. Feed the SMPTE pattern signal. 1. Make sure the 100% and 95% white as well as the

1. Check the fixed value. Fixed value : 127

1. Check the fixed value. C-R-OS : 260 C-B-OS : 260

1. Check the fixed value. Fixed value : 256

1. Check the fixed value. Fixed value : 124

1. Check the fixed value. Fixed value : 68

Check the fixed value. Fixed value : 128

1. Check the fixed value. Fixed value : 154

0% and 5% black gradations are visible.

XG-MB67X

9 VIDEO white balance adjustment 1. Feed the 50% gray signal.

2. Select the following group and subjects. Group :CONFIRM/VIDEO Subject : V-R-OS V-B-OS

10 White balance checking and

readjustment

11 Off-timer performance 1. Select the following group and subjects.

12 Thermistor performance checking 1. Heat the thermistor with a hair dryer. 1. Make sure that the temperature is indicated. 13 Auto sync performance checking 1. Feed the phase check pattern signal. 1. In the VGA, SVGA, XGA and SXGA modes, make

1. RGB Inputt sRGB Input VIDEO Input DTV Input DVD Input

Group :CONFIRM/CHECK Subject : TEMP-OFF

1. V-R-OS is 132. V-B-OS is 132.

Check that there is no deviation of white balance with the monitor.

1. Select OFF from the process mode. Make sure the off-timer starts with 5 minutes onscreen and count one minute in one second. And then indication is 0 minute, the power supply of the set is cut off.

sure the Clock, Phase, H-Pos and V-Pos settings can be automatically adjusted.

7 – 2

Page 26

XG-MB67X

No. Adjusting point Adjusting conditions Adjusting procedure

14 Monitor out check 1. Send signals to INPUT 1 and INPUT 2.

2. Connect another monitor to the monitor out.

3. Connect the audio OUT.

15 RS232C operation check 1. Connect the unit and a PC with the

RS232C cable.

16 Model name and version check 1. Select the following group.

Group : INFO/VERSION.

17 LAN operation check 1. Connect to a PC with a LAN cable. 1. Check that communication is possible. 18 Delivery settings 1. Make the following settings.

* Writing a software program (before main PWB is mounted)

Use the DLP Composer Lite Ver. 4.2 or higher to download the firmware. After writing the specified version of firmware to the PWB using the RS232C cable, check the version of the written firmware.

If no software program is written, all three LEDs light up in the chassis inspection process.

1. Check that the same images as seen on the screen appear on the connected monitor and that the sound from the sound source connected to the audio OUT is heard.

1. Send a command from the PC, and check it functions correctly.

1. The model name appears in the MODEL field, and the firmware version in the VERSION field. Check that they are correct.

Destination Process Remote control

adjustment adjustment

USA SS4 Factory setting at 4

China SS6 Factory setting at 6

Others SS3 Factory setting at 3

1. Calling and quitting the process mode with the control keys on this model.

* Although it is possible for the process OUT to exit using the process menu, the IN/OUT toggle command is also available considering the existing

specification.

1. Calling and quitting

With the menu not displayed, press the "ENTER", "ENTER", "VOL+", "VOL-", "ENTER", "ENTER" and "MENU" keys on the remote control (one for C50/45 or P25/20 system is also usable) or on the main unit.

2. Others

Press the S2551 process key (toggle) on the main PWB to call and quit the process menu.

NOTE: When adjusting in the process mode, set a signal with a vertical frequency of 60 Hz or no signal. (May not be properly adjusted with other sig-

nals.)

2. Resetting the lamp timer for this model

1. Resetting procedure

In Stand-by, run this command to clear the operating time of the lamp to 0 and turn on the power. Press and hold " ", "ENTER", and "MENU", and then press the "STANDBY/ON" key of the set.

3. Forced disabling of the System-Lock of this model

1. Disabling procedure

With System-Lock input window onscreen, press the "MENU", "ENTER", "ENTER", "MENU", "ENTER", "ENTER" and "MENU" keys, in this order, on the remote controller.

7 – 3

Page 27

[2] Adjustment mode process menu

1st Layer 2nd Layer Default

ADJUST CW/Auto KS CW-INDEX 20

CAL K-SENS (0)

AD/DLP R-CONT 110

G-CONT 110 B-CONT 110 R-GAIN 100 G-GAIN 100 B-GAIN 100

SS SS1 —

SS2 — SS3 — SS4 — SS5 — SS6 —

CONFIRM AD R-BRIGHT 127

G-BRIGHT 127 B-BRIGHT 127 C-R-OS 260 C-B-OS 260

DLP R-BLK 256

G-BLK 256 B-BLK 256 S-R-OS 128 S-G-OS 128 S-B-OS 128

VIDEO V-CONT 124

V-B RIGHT 68 V-COLOR 154 V-HUE 128 V-R-OS 132 V-G-OS 128 V-B-OS 132 OFFSET-MODE 0 OFFSET-CONT 0

OFFSET-BRI 0 MODEL MODEL-SELECT 1 CHECK LED-CHK 0

TEMP-OFF —

INFO VERSION MODEL —

VER. — PATTERN RGB 1

RGB50 1

CORSS 1

STEP 1

COLOR 1

CHR 1 LAMP CURRENT 0

HISTORY1 0

HISTORY2 0

HISTORY3 0

HISTORY4 0

TOTAL 0 TEMP/FAN TEMP1 —

TEMP2 —

FAN0 3

FAN1 3

FAN2 3

OTHER 232C 232C-MODE 0

EXIT

XG-MB67X

7 – 4

Page 28

XG-MB67X

[3] Adjustment of ballast unit output power (lamp power)

1. List of parts requiring adjustment

When replacing the following parts, adjust the ballast unit output power (lamp power).

Part name Ref No. Part code

1 Cement resistor R905 RR-FZA002WJZZ 2 Control PWB —— DUNTKD148WEF3 3 Ballast microprocessor IC7707 RH-iXB773WJZZQ 4 5V regulator IC7704 VHITA78L05F-1Y 5 PWM controller IC7701 VHIM51995AF-1Y

2. Adjustment jigs

The following jigs are required for adjusting the ballast unit output power (lamp power).

Part name Part code Manufacturer

1 Adjustment jig (resistance load 25Ω) RUNTZA018WJZZ Asahi Communication 2 Connecting cord (conversion cable) QCNW-E007WJZZ SMK

3. Ballast unit output power (lamp power) adjustment method

Adjust the ballast unit output power (lamp power) in the following method.

[Setting method]

Ballast Unit Lamp Cable

XG-MB67X

Projector

(QCNW-D573WJQZ)

Connecting Cord

(QCNW-E007WJZZ)

Tester (Voltage)

TP1

Adjustment Jig

(RUNTZA018WJZZ)

TP2

[Adjustment method]

1. Unplug the ballast unit lamp cable(QCNW-E583WJQZ) of the XG-MB67X projector from the lamp and connect the cable to the connecting cord (QCNW-E007WJZZ).

2. Connect the connecting cord (QCNW-E007WJZZ) to the adjustment jig (RUNTZA018WJZZ).

3. Connect TP1 of the adjustment jig (RUNTZA018WJZZ) to the negative terminal of the tester and TP2 to the positive terminal.

4. Turn on the XG-MB67X projector.

5. Age the projector for 60 seconds or more.

6. Adjust the volume resistor (R7728) of the ballast control PWB (DUNTKD148WEF3) so that the voltage of the tester reaches 83± 0.5 V.

Adjustment value: 83

CAUTION: * Caution for electric shock: Do not touch the test points TP1 and TP2 of the adjustment jig when supplying power since a high voltage

* Caution for heat: Be careful that the resistance load of the adjustment jig produces a high temperature when supplying power.

* Connection of the lamp cable: Check that the lamp cable and connecting cord (QCNW-E007WJZZ) are connected securely.

± 0.5 V

and large current is applied to them.

Poor connection may cause smoking or ignition due to arc discharge.

7 – 5

Page 29

XG-MB67X

CHAPTER 8. TROUBLE SHOOTING TABLE

Service Manual

[1] TROUBLE SHOOTING TABLE

Checking the basic operation

XG-MB67X

Does the power LED light up or flash in red or green?

YES NO

Does the set function with its keys or the remote controller?

YES Lamp does not turn on or it turns off in a short time.

NO Nothing is displayed or white vertical line noise

NO Colors are not displayed normally.

Color deviation and color fluctuation occur.

NO Has P1701 come off or is it

loose?

NO Go to "Main PWB check".

YES Go to "Checking the lamp light-

up".

YES Go to "DMD system check".

YES Check PHOTO SENSOR circuit.

YES Fully insert the connector.

NO Are RGB and component input displayed normally?

YES Is VIDEO input displayed normally?

YES Is S-VIDEO input displayed nor-

mally?

YES Does the LAN function? NO Go to “checking the LAN”.

YES

END

NO Go to "RGB and component sig-

nal check".

NO Go to "VIDEO input check".

NO Go to "S-VIDEO input check".

8 – 1

Page 30

XG-MB67X

Main PWB check

Is 6 V applied to TL1702 and 13 V to TL1703?

YES

Is approx. 6 V applied to TL1742? NO Check IC1742 and peripheral circuits.

YES

Is 1.5 V applied to TL1741? NO Check IC1741 and peripheral circuits.

YES

Is 3.3 V applied to TL1762? NO Check IC1763 and peripheral circuits.

YES

Is 2.5 V applied to TL1763? NO Check IC1762 and peripheral circuits.

YES

Is 5 V applied to TL1791? NO Check IC1791 and peripheral circuits.

NO Go to "Power supply ballast PWB check".

YES

Is 3.3 V applied to TL1792? NO Check IC1792 and peripheral circuits.

YES

Is 12 V applied to TL1761? NO Check IC1761 and peripheral circuits.

YES

Is3.3 V applied to pin(1) of IC1743? NO Check IC1743 and peripheral circuits.

YES

Is 3.18V applied to pin(1) of IC2001? NO Check IC2001 and peripheral circuits.

YES

Is 3.3 V applied to pin(3) of S2001? NO Check that it is set to the N side. Or remove

S2001.

YES

Is rectangular wave of 50 MHz sent to X2251 pin(3)?

NO Check X2251 and peripheral circuits.

YRS Check IC2002, IC2262, IC2263 and peripheral circuits.

8 – 2

Page 31

DMD system check

Check P2501 for breakage and solder crack and peripheral resistance for solder crack.

Check SC9101 for breakage and solder crack.

XG-MB67X

Is there any vertical stripe (block noise) on the screen?

Is the screen all black? NO Is approx. 7 V applied to TL9303? NO Check IC9301 and peripheral cir-

YES

YES The main PWB and DMD PWB are in poor

contact. Check the contact surface for dirt and smear. Check the DMD connector for breakage. Reassemble the DMD, optical mechanism, and DMD PWB.

cuits.

YES

Is approx. 26 V applied to TL9301? NO Check IC9301 and peripheral cir-

cuits.

YES

Is approx. -26 V applied to TL9302? NO Check IC9301 and peripheral cir-

cuits.

YES The main PWB and DMD PWB are in poor contact. Check the contact surface for dirt

and smear. Check the DMD connector for breakage. Reassemble the DMD, optical mechanism, and DMD PWB.

Is 3.27 V applied to IC2231 pin(1) and 1.8 V to TL2231?

YES

Is 400 MHz on IC2241 pin(20)? NO Check IC2241 and peripheral circuits.

NO Check IC2231, IC2201, and their peripheral

circuits.

8 – 3

Page 32

XG-MB67X

YES

Is approx. 7 V applied to TL9303?

YES Is approx. 26 V applied to TL9301?

YES Is approx. -26 V applied to

TL9302?

YES The main PWB and DMD PWB are in poor contact. Check the

contact surface for dirt and smear. Check the DMD connector for breakage. Reassemble the DMD, optical mechanism, and DMD PWB.

NO Check IC9301 and peripheral circuits.

8 – 4

Page 33

Power supply PWBcheck

XG-MB67X

Is 6 V applied to pins (7) and (8) of the connector P704?

YES

Is 13 V applied to pins (3) and (4) of the connector P704?

YES

Does the lamp turn on?

YES YES

Check the main PWB.

NO Check peripheral cir-

cuits of IC703.

NO Are connectors P704

and CN901 fully inserted?

Is DC voltage of 380 V applied to both ends of C704?

YES

Is R766 in the OPEN status?

NO Securely insert the con-

NO Is pin (11) of the connec-

NO Is LAMP-EN/SYNC sig-

nectors.

tor P704 at "H"?

YES

Check peripheral circuits of IC902.

nal properly sent to pin (14) of the connector P704? (Refer to the

waveform chart .)

NO Check the main

PWB.

NO Check the main

PWB.

YES YES

Check circuits R766 and after or replace R766.

Are GATE waveforms of Q901 and Q903 appropriate? (See waveform

diagram .)

NO Check the Power

PWB.

8 – 5

Page 34

XG-MB67X

Are connectorsP701 and P702 fully inserted?

YES Is AC voltage between 100 – 240 V applied to both ends of C707?

YES Is the bimetal broken? (Connection between 1 and 2 of P702)

YES Is R717 open? NO Is R705 open? NO Check peripheral circuits of

YES YES Check that P704 connector pin (11) is at "H". Replace R717.

NO Securely insert the connectors.

NO Replace F701.

NO Press the red button on the

bimetal.

IC703.

Replace F705. Check that the power supply FAN FB and FC are not stopped.

8 – 6

Page 35

Checking the lamp light-up

XG-MB67X

Does the lamp turn on when the power is turned on?

NO Is the lamp tight in the socket?

NO Has the FPC cable to SC3581 come off or is it loose?

NO Is rotating sound of the color wheel heard?

YES Is approx. 0.7 V applied to TL1706?

YES Go to "Check when the

YES Securely insert the con-

NO Check IC3581 and periph-

NO Check IC1701 and periph-

lamp turns off soon after turning on".

nectors.

eral circuits. (Refer to the

waveform chart .)

eral circuits. (Refer to the

waveform chart .)

YES Replace the color wheel.

YES Has the harness connected to P702 on the power supply unit come off, or is it

loose? Otherwise, is it broken?

Dose the lamp turn on after the replacement?

NO Is 340 VDC applied to both ends of C914?

YES

Is D911 or D912 shortcircuited?

NO Is D914or D910 shortcircuited?

YES Fully insert the connec-

tors or replace the harnesses.

YES Replace the lamp.

NO Go to "Power supply PWB

check".

YES Replace both D911 and

D912.

YES Replace D914 or D910,

whichever is short-circuited.

8 – 7

Page 36

XG-MB67X

Check when the lamp turns off soon after turning on

Have connectors P1703, P1721, P1722, P1723 and P1724 come off or are they loose?

Is each cooling fan rotating? NO Check the cooling fan.

YES

Is approx. 3 V applied to TL1721?

YES

Is 12 V applied to TL1761? NO Check IC1761, IC3581 and

YES

Is 2.5 V applied to TL1763? NO Is 3.3 V applied to TL1762? YES Check IC1762 and peripheral cir-

YES Securely insert the connec-

tors.

NO Check peripheral circuits of

Q1721.

Go to "DMD system check".

peripheral circuits.

cuits.

Check IC1763 and periph-

YES

Is 5 V applied to TL1791? NO Check IC1791 and periph-

YES

Is 5 V applied to TL1712? NO Is 5 V applied to TL1712

YES YES Is the signal of 180 Hz sent to TL1716? (When vertical fre-

quency of the input signal is 60 Hz)

YES Is the signal of 180 Hz sent to

TL1706? (When vertical frequency of the input signal is 60 Hz)

NO Check PHOTO SENSOR

NO Check IC1701 and periph-

eral circuits.

with P1703 removed?

PWB.

eral circuits.

NO Check connection of FB1710.

YES Check the power PWB.

8 – 8

Page 37

RGB and component signal check

Send component signal or RGB signal of 1080i (or 720P) from INPUT 1 or INPUT 2. Select INPUT 1 or INPUT 2 using keys on the main unit or the remote control.

YES

Is image displayed normally? YES End

NO Are picture signals sent to TL3201, TL3204, and

TL3205?

YES

Is 3.3V applied to TL1792? NO Check IC1792 and peripheral cir-

NO Check IC3002 and the peripheral

circuits (check IC3052 for INPUT

2).

cuits.

XG-MB67X

YES

Is 3.3V applied to TL1762? NO Check IC1763 and peripheral cir-

cuits.

YES Check IC3201 and peripheral circuits.

8 – 9

Page 38

XG-MB67X

S-VIDEO (INPUT 3) check

Send S-Video signal (color signal) from INPUT 3. Select INPUT 3 using keys on the main unit or the remote control.

Is image displayed normally?

NO NO Is image displayed in black and white?

NO YES Is S-VIDEO signal (Y) sent to R3306?

VIDEO (INPUT 4) check

Send VIDEO signal from INPUT 4. Use buttons on the main unit or the remote control to select INPUT 4.

YES End Is image displayed nor-

YES Check S-VIDEO ter-

minal and peripheral circuits of Q3311.

NO Check S-VIDEO ter-

minal and peripheral circuits of Q3301.

mally?

Is VIDEO signal sent to C3326?

Is 1.8 V applied to TL3358?

YES End

NO Check VIDEO termi-

nal and peripheral circuits of Q3321.

NO Check IC3352 and

peripheral circuits.

YES YES Is 1.8 V applied to TL3358?

YES YES Is 3.3 V applied to

TL1792?

YES YES Is 1.5 V applied to TL1762?

YES Check IC3351 and peripheral circuits.

NO Check IC3352 and

peripheral circuits.

NO Check IC1792 and

peripheral circuits.

NO Check IC1763 and

peripheral circuits.

Is 3.3 V applied to TL1792?

Is 1.5 V applied to TL1762?

Check IC3351 and peripheral circuits.

NO Check IC1792 and

peripheral circuits.

NO Check IC1763 and

peripheral circuits.

8 – 10

Page 39

Checking the LAN

LAN communication is disabled even though connecting the control PC with a LAN cable. The LINK LED (green) does not light up.

YES

Are the connection of connecting cable and the settings of IP address, sub-net address and default gateway correct?

YES

XG-MB67X

NO Check the connecting cable and LAN settings. If the LAN

settings are unknown, contact the network administrator. If the network settings cannot be saved, replace IC8003 (EEP ROM) as it may be defective. Note: When IC8003 (EEP ROM) is replaced, the MAC address returns to default. Refer to "Resetting after replacing IC8003 (EEP ROM)" to reset.

Are the network device (e.g. Hub) between the control PC and XG-MB67X and cable normal?

YES When data is sent from the control PC, do pins (30) and (31) of IC8201 (PHY receiver)

receive signals?

YES Check the PHY receiver IC8201 and the peripheral circuits of the microprocessor

IC8001.

NO Repair defective parts in the network.

NO Check the peripheral circuit of J8201 (RJ-45 jack with built-

in transformer).

8 – 11

Page 40

XG-MB67X

CHAPTER 9. MAJOR IC INFOMATIONS

Service Manual

[1] MAJOR IC INFOMATIONS

1. Resetting after replacing IC8003 (EEP ROM)

MAC address returns to default. Follow the steps below to reset.

1 Open the top cabinet of the projector and confirm the MAC address (MAC: ************) of the seal on the PWB. 2 Connect the control PC and projector with a RS-232C cable. 3 Turn on the AC power supply. 4 EEP ROM returns to default. 5 Turn off the AC power supply and turn on again. 6 Set MAC address by using the RS-232C command. (Refer to "MAC address setting" for the setting procedure.) 7

Enter and check the response. Check that it is the same as the set MAC address.

8 Setting is completed.

MAC address setting

RS-232C commands to be used

*1 1st byte of the MAC address *2 2nd byte of the MAC address *3 3rd byte of the MAC address *4 4th byte of the MAC address *5 5th byte of the MAC address *6 6th byte of the MAC address *7 7th byte of the MAC address *8 8th byte of the MAC address *9 9th byte of the MAC address *10 10th byte of the MAC address *11 11th byte of the MAC address *12 12th byte of the MAC address