SERVICE MANUAL Better Service Better Reputation Better Profit
PART No. 399910943
SAFETY CAUTION: Before servicing this chassis, it is important that the service technician read and follow the "Safety Precautions" and "Product Safety Notice" in this Service Manual. WARNING: SHOCK HAZARD - Use an isolation transformer when servicing.
CAUTION In transporting the product, be sure to use the specified box. If the product does not have the specified stand, attach the stand, then pack the project. Packing the product without the specified stand and transporting it could cause a product failure.
1-1
SAFETY PRECAUTIONS CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN
CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK, DO NOT OPEN TOP COVER. NO USER-SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL. This symbol warns the user that uninsulated voltage within the unit may have sufficient magnitude to cause electric shock. Therefore, it is dangerous to make any kind of contact with any part inside of this unit. This symbol alerts the user that important literature concerning the operation and maintenance of this unit has been included. Therefore, it should be read carefully in order to avoid any problems.
ATTENTION RISQUE D'ELECTROCUTION NE PAS OUVRIR ATTENTION: POUR EVITER LES RISQUES D' ELECTROCUTION, NE PAS ENLEVER LE CONVERCLE SUPERIEUR. AUCUN DES ELEMENTS INTERNES NE DOIT ETRE REPARE PAR L'UTILISATEUR. NE CONFIER L' ENTRETIEN QU'A UN PERSONNEL QUALIFIE. L'éclair fléché dans un triangle équilatéral est destiné à avertir l'utilisateur de la présence, dans l'appareil, d'une zone non-isolée soumise à une haute tension dont l'intensité est suffisante pour constituer un risque d'électrocution. Le point d'exclamation dans un triangle équilatéral est destiné à attirer l' attention de l'utilisateur sur la présence d'informations de founctionnement et d'entretien importantes dans la brochure accompagnant l'appareil.
WARNING HEATSINK MAY BE ENERGIZED. TEST BEFORE TOUCHING.
2-1
SAFETY PRECAUTIONS 1. Before returning an instrument to the customer, always make a safety check of the entire instrument, including, but not limited to, the following items. a. Be sure that no built-in protective devices are defective and/or have been defeated during servicing. (1) Protective shields are provided on this chassis to protect both the technician and the customer. Correctly replace all missing protective shields, including any removed for servicing convenience. (2) When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place all protective devices, including,but not limited to, nonmetallic control knobs,insulating fishpapers,adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not operate this instrument or permit it to be operated without all protective devices correctly installed and functioning. b. Be sure that there are no cabinet openings through which an adult or child might be able to insert their fingers and contact a hazardous voltage. Such opening include,but are not limited to, (1) spacing between the picture tube and the cabinet mask, (2) excessively wide cabinet ventilation slots, and (3) an improperly fitted and/or incorrectly secured cabinet back cover. c. Leakage Current Hot Check -- With the instrument completely reassembled,plug the AC line cord directly into a 120V AC outlet (PX-42M2G : 240V AC outlet). (Do not use an isolation transformer during this test.) Use a leakage current tester or a metering system that complies with American National Standards Institutes (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories(UL) 1950. With the instrument AC switch first in the ON position and then in the OFF position, measure from a known earth ground (metal waterpipe, conduit,etc.) to all exposed metal parts of the instrument(antennas, handle bracket, metal cabinet, screwheads, metallic overlays, control shafts,etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 3.5 milliamp. Reverse the instrument power cord plug in the outlet and repeat test.ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER.
AC Leakage Test (READING SHOULD NOT BE ABOVE 3.5 mA) DEVICE UNDER TEST TEST ALL EXPOSED METAL SURFACES 3-WIRE CORD ALSO TEST WITH PLUG REVERSED (USING AC ADAPTER PLUG AS REQUIRED) LEAKAGE CURRENT TESTER
+
EARTH GROUND
2. Read and comply with all caution and safety-related notes on or inside the Monitor cabinet, on the Projection Monitor chassis, or on the picture tube. 3. Design Alteration Warning -- Do not alter or add to the mechanical or electrical design of this unit. Design alterations and additions, including, but not limited to, circuit modifications and the addition of the items such as auxiliary audio and/or video output connections might alter the safety characteristics of this Monitor and create a hazard to the user. Any design alterations or additions will void the manufacturer's warranty and will make you,the servicer,responsible for personal injury or property damage resulting therefrom. 4. Hot Chassis Warning -- a. Some MultiSync Monitor chassis are electrically connected directly to one conductor of the AC power cord and may be safely serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source. To confirm that the AC power plug is inserted correctly, with an AC voltmeter measure between the chassis and a known earth ground. If a voltage reading in excess of 1.0V is obtained, remove and reinsert the AC power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground. b. Some Projection Monitor chassis normally have 85V AC (RMS), between chassis and earth ground regardless of the AC plug polarity. These chassis can be safely serviced only with an isolation transformer inserted in the power line between the receiver and the AC power source, for both personnel and test equipment protection. c. Some Projection Monitor chassis have a secondary ground systems in addition to the main chassis ground. This secondary ground system is not isolated from the AC power line. The two ground system are electrically separated by insulating material that must not be defeated or altered.
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SAFETY PRECAUTIONS 5. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts-- be sure that leads and components do not touch thermally hot parts, c. the AC supply, d. high voltage, and e. antenna wiring. Always inspect in all areas for pinched, out-of-place, or frayed wiring. Do not change spacing between components, and between components and the printed-circuit board. Check AC power cord for damage. 6. Components,parts, and/or wiring that appear to have overheated or are otherwise damaged should be replaced with components, parts, or wiring that meet original specifications. Additionally,determine the cause of overheating and/or damage and, if necessary, take corrective action to remove any potential safety hazard. 7. PRODUCT SAFETY NOTICE --Many MultiSync Monitor electrical and mechanical parts have special safety-related characteristics some of which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc. Parts that have special safety characteristics are identified in this service data by shading with a mark on schematics and by shading or a mark in the parts list. Use of a substitute replacement part that does not have the same safety characteristics as the recommended replacement part in this service data parts list might create shock, fire, and/or other hazards.
2-3
PRECAUTIONS DE SECURITE 1. Avant de remettre un appareil à un client, faire toujours d'abord un examen de sécurité de l'appareil en entier comprenant, mais ne s'y limitant pas les points cités ci-dessous: a. Vérifier qu' aucun des dispositifs de protection ne soit défectueux ou n' ait été endommagé pendant les travaux. (1) Les volets protecteurs sur ce châssis ont été montés pour protéger aussi bien le technicien que le client. Remplacer correctement tous les volets protecteurs manquants, aussi bien que ceux qui ont pu être enlevés pour la commodité des travaux. (2) Quand vous remettez le châssis ou d'autres assemblages ensemble dans le coffret, vérifier qu' ont été remis à leur place tous les dispositifs de protection, comprenant mais ne s' y limitant point, les boutons de contrôle non-métalliques, les feuilles d'isolation, les couverture/volets de l'ajustement et du compartiment, et l'isolation des réseaux résistance/condensateur. Ne pas travailler sur cet appareil ni permettre qu'y soit effectué un travail sans que tous les dispositifs de protection n' y soient correctement installés fonctionnants. b. Bien vérifier qu'il n'y ait aucune ouverture sur le coffret qui ne puisse permettre à un adulte ou à un enfant d'y faire pénétrer ses doigts et attraper une décharge électrique. De telles ouvertures comprendraient sans pour autant s'y limiter (1) l'espace entre le tube à images et le coffret de l'eppareil, (2) les espaces excessivement ouverts pour la ventilation et (3) la couverture arrière du coffret improprement fixée ou incorrectement protegée. c. Vérification de courant de fuite L'appareil ayant été complètement réassemblé, brancher-le à une prise de courant de 120V (PX-42M2G : 240V). (Ne pas se servir d'un transformateur d'isolation pendant ce test). Se servir d'un vérificateur de courant d'excitation ou d'un système de mesure conforme aux normes ANSI (American National Standards Institute) C101.1 Leakage Current for Appliances et U. L (Underwriters Laboratories) 1950. Le bouton de l'appareil en position "Marche" et ensuite en position "Arrêt", mesurer à partir d'une prise de terre (métallique tuyauterie, conduite, etc...) à toutes les pièces métalliques de l'appareil exposées (antennes, poignet métalliques, coffren métallique, tête des vis, surfaces métalliques, traits de contrôle, etc.) surtout à toutes les pièces métalliques exposées qui peuvent reconduire le courant au châssis. En aucun cas, la mesure du courant ne doit dépasser 3.5 milliamp. Inverser la fiche de courant de l'appareil dans la prise et répéter le test. Tout mesurage ne s'arrêtant pas aux limites spécifiées icicomporte un risque de décharge électrique dangereux, qui doit être éliminé, avant que l'appareil ne soit remis au client.
EXAMEN DE COURANT D'EXCITATION (LA MESURE DU COURANT NE DOIT PAS DEPASSER 3.5 MILLIAMP) DISPOSIT IF SOUS L ' EXAMEN
+ EXAMINER TOUTES LES PIECES METALLIQUES DEL' APPAREIL EXPOSEE 3-CORDES DE FIL EXAMINER AVEC LA FICHE DE COURANT INVERSEE (SE SERVIR DE LA FICHE DE COURANT DE L' A DAPTATEUR COMME DEMANDEE)
VERIFICATEUR DE CORANT DE FUITE
PRISE DE TERRE
2. Lire et respecter toutes les mises en garde et notes de sécurité à l'intérieur ou à l'extérieur du coffret du rétro-projecteur, sur le châssis du rétro-projecteur ou sur le tube à images. 3. Mise en garde contre la modification du dessin Ne pas modifier ni ajouter à la pièce mécanique ou électrique du modèle. Des modifications ou additions, comportant, mais ne s'y limitant pas, des modifications des circuits et l'addition d'éléments tels que des auxilliairs audio et/ou des branchements pour la prise de vidéo, pourrait éprouver la sécurité de ce rétro-projecteur et créer un risque pour l'utilisateur. Tout changement ou addition accomplie annulera la garantie du fabricant et va rendre votre service d'entretien, responsable des dommages corporels ou de biens en résultant. 4. Mise en garde contre le châssis sous tension a. Certains châssis de rétro-projecteur sont électriquement reliés à un conducteur du fil de courant et ainsi peuvent ne comporter aucun risque sans un transformateur d'isolation seulement si la prise de courant est branchée, de manière que le châssis est relié à la prise de terre de la source de courant. Pour s'assurer que la prise de courant est correctement insérée, relever les mesures avec un voltmètre de courant entre le châssis et un point de prise de terre bien connu. Si le voltage indiqué est supérieur à 1,0V, débrancher et reinsérer la prise de courant dans la polarité contraire et une fois de plus remesurer le voltage potentiel entre le câssis et la prise de terre.
2-4
PRECAUTIONS DE SECURITE b. Certains châssis de moniteur ont habituellement 85V (RMS) entre le châssis et la prise de terre, en fonction de la polarité de la prise de courant. Ces châssis peuvent ne comporter aucun risque seulement avec un transformateur d'isolation inséré dans la ligne de puissance située entre de rétro-projecteur et la source d'électricité, cela pour la protection aussi bien du personnel que du matériel de vérfication. c. Certains châssis de rétro-projecteur ont un système secondaire de masse en addition avec le système principal de masse du châssis. Ce système secondaire de masse n'est pas isolé du courant électrique. Les deux systèmes sont électriquement séparés par du matériel d'isolation qu' on vérifiera bien qu'il ne soit ni altéré ni défectueux. 5. Vérifier la couverture originale en plomb. Accorder la plus grande attention à la couverture de plomb notamment aux endroits ci-dessous indiqués. a. Près des bords aigus b. près des parties très chaudes Vérifier que les composants et les plombs ne touchent pas les parties très chaudes telles que: c. l'alimentation du courant d. la haute tension e. Ies fils de l'antenne Pousser l'inspection, à tous les endroits, à la recherche des cordes pincées, déplacées ou effilochées. Ne pas changer l'écartement entre composants, et entre composants et le tableau de circuit imprimé. Vérifier que le fil de conduite électrique est en bon état. 6. Les composants, parts (pièces) et/ou fils qui ont été trouvés surchauffés devraient être remplacés avec les composants, pièces et fils s'y reliant avec d'autre qui ont les mêmes spécifications que les originales. De plus, rechercher la cause du surchauffement et/ ou des dommages et si nécessaire, prendre les mesures propres pour prévenir tout risque potentiel. 7. Note sur sûreté de l'appareil Beaucoup de pièce de rétro-projecteur, qu'elles soient électriques ou mécaniques, ont des dispositions de sécurité qui ne sont pas toujours évidentes d'une simple inspection visuelle et la protection qu'elles donnent nécessairement ne pourront être pas obtenues par les remplaçants avec des composants aux voltages ou watts plus élevés. Les pièces qui ont des caractéristiques particulières de sécurité sont identifiées avec un trait marqué sur les schémas et sont ombragés ou comportent un trait sur la liste des pièces. L'utilisation d'un produit substitutif qui n'aurait pas les mêmes caractéristiques comme il est recommandé dans ces données d'entretien pourrait provoquer une décharge électrique, un feu, et/ou d'autres dangers.
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TROUBLE SHOOTING No energization of POWER circuit Is POWER LED lit? YES NO Is the power plug correctly connected to the wall outlet? YES Is there AC 100V behind the fuses F1 and F2? Green flashing: To 1 (Page 4-2) Red flashing: To 2 (Page 4-2) Green and red flashing: To 3 (Page 4-3) Green lighting: To 4 (Page 4-3) YES Is there M+15V output at Pin of the PM connector? NO Fuses F1 and F2 have blown out. If the fuses blow out again after replacement, the POWER unit is out of order. NO Rearrange the power plug connection correctly.
1
NO
Disconnect the PM and PQ connectors from one after another. If there is M+14V output, the circuit beyond the connectors is out of order. If there is no output, the POWER unit is out of order.
YES Is there +5V output at Pin of IC6805 (ANALOG PWB)? YES Is there +5V output at Pin of the PW connector? YES Is there +5V output at Pin of the PW connector? YES Failure in POWER PWB
2 5 3
NO
Failure in SW2001 (CTL PWB) and related circuits.
NO
Failure in +5V line as far as POWER PWB
NO
Failure in peripheral area of IC6800 (ANALOG PWB).
4-1
TROUBLE SHOOTING 1
Is 0V observed at Pin of IC6800 (ANALOG PWB)? YES Is 0V observed at Pin or of IC6553 (ANALOG PWB)? YES
4
NO
Failure in peripheral area of IC6800
1 2
NO
Failure peripheral area of IC6553
1 0V at Pin 1: Failure in fan's peripheral area of the set 2 0V at Pin 2: Failure in fan's peripheral area in the POWER unit
2 NO Is 0V observed at Pin 57 of IC6800 (ANALOG PWB)? YES Is 0V observed at Pin of IC6808 (ANALOG PWB)? YES Failure in TH1 of the POWER unit and peripheral circuits Failure in peripheral area of IC6800
5
NO Failure in peripheral area of IC6808
4-2
TROUBLE SHOOTING 3
Is 0V observed at Pin of IC6800 (ANALOG PWB)? YES Failure in peripheral area of MODULE circuit
$
NO
Failure in peripheral area of IC6800
4
3
Is "H" maintained at Pins of the PM connector? YES Is "H" maintained at Pin the PH connector? YES
2 and
NO Failure in peripheral area of IC6800
7 of
NO
Failure in peripheral area of MODULE
Is power supply available when SW1 (POWER unit: HV system is OFF) is turned OFF?
NO
Confirm that the power supply is a vailable by disconnecting the connectors of PV, PQ, PN, PA from one after another (others keptconnected). If available, circuit of the disconnected connector is out of order. If not available, the POWER unit is out of order.
YES Failure in peripheral area of the HV system in MODULE and POWER unit.
4-3
TROUBLE SHOOTING No display (no video screen display)
Enter a color bar signal input.
Is there on-screen display of VIDEO? YES Is there a video signal at TP1001?
NO
Refer to Fault Analysis for ANALOG PWB and thereafter.
NO
With the signal line disconnected, is there a video signal at the signal line terminal? YES Failure in peripheral area of IC1001
NO
Failure in signal source.
YES
With the YC connector disconnected, is there a video signal at TP1025? YES Is there a video signal at Pin 2 of the VD connector in VIDEO PWB? YES
NO
Failure in peripheral area of IC1001
NO
Is there a rectangular waveform signal of 5Vp-p at pins 2 and 3 of the JC connector? YES
NO
Failure in peripheral area of IC6800
Refer to Fault Analysis for ANALOG PWB and thereafter. To 5 (Page 4-5)
4-4
TROUBLE SHOOTING 5
Signal Y input is available at Pin 53 of IC5008. YES Signal Y output is available from Pin 4 of IC5008. YES Signal Y (or VIDEO) input is available at Pin 15 of IC5008. YES Signal Y (or VIDEO) output is available at Pin 6 of IC5005. YES
NO
Failure in peripheral area of IC5008.
NO
Failure in peripheral area of IC5012 ~ IC5017.
NO
Failure in peripheral area of IC5008.
NO
Failure in Q5011 and Q5037~ Q5039.
There is a signal input at IC5006: Signal Y at Pin 14 for NTSC, Signal Y at Pin 16 for PAL, Signal VIDEO at Pin 1 for SECAM, and Signal Y at Pin 9 for S-input. YES Abnormality occurring with SECAM/S input is due to failure in V-I/O board. Abnormality occurring with NTSC/PAL is due to failure in YC separator circuit.
NO
Failure in peripheral area of IC5005.
4-5
TROUBLE SHOOTING No display (no HD/DVD screen display)
Enter a color bar signal input.
Is there on-screen display of "HD" or "DVD"? YES Is there a video signal at TP1004?
NO
Refer to Fault Analysis for ANALOG PWB and thereafter.
NO
With the signal line disconnected is there a video signal at the signal line terminal? YES Failure in the signal line of IC6110 or before it.
NO
Failure in signal source.
YES
Refer to Fault Analysis for ANALOG PWB and thereafter.
4-6
TROUBLE SHOOTING No display (no RGB/PC screen display)
Enter a VGA or SVGA color bar signal input.
Is there on-screen display of "PC"? YES Is LED lit in green ? (Not in power management)
NO
Refer to Fault Analysis for ANALOG PWB and thereafter.
NO
Is there horizontal sync at Pin 13 of M1006, or vertical sync at Pin 14? YES Is there horizontal sync at Pin 8 of ANALOG PWB "PC" connector, or vertical sync at Pin 10? YES Is there horizontal sync at Pin 89 of IC6800, or vertical sync at Pin 19? YES Failure in the peripheral area of IC6800.
NO
Failure in the signal line.
YES
NO
Failure in the VI/O sync system (Q1050 and peripheral area of IC1006).
NO
Failure in the ANALOG PWB sync system.
Is there a video signal at TP1007, TP1008, and TP1009? YES
NO
With the signal line disconnected, is there a video signal at the signal line terminal? YES Failure in the signal line of IC6110 or before it.
NO
Failure in the signal line.
Refer to Fault Analysis for ANALOG PWB and thereafter.
4-7
TROUBLE SHOOTING No display (fault analysis for ANALOG PWB and thereafter)
Is there a video signal at TP6139, TP6140, and TP6141? YES Is there a signal of 5Vp-p at Pins 1 ~ 47 of the AD connector (odd-numbers only)? YES Is there a clock signal at Pin 49 of the AD connector? YES Is there a signal of 5Vp-p at Pin 52 of the AD connector (H-SYNC), Pin 53 (V-SYNC), or Pin 76 (V period)? YES
NO
Failure in ANALOG PWB (peripheral area of the signal line before AD converter)
NO
Failure in ANALOG PWB (signal circuit or sync system circuit of AD converter and thereafter, or peripheral area of IC6800).
NO
Failuure in ANALOG PWB (sync system circuit or peripheral area of IC6800).
NO
Failure in ANALOG PWB (sync system circuit or peripheral area of IC6800).
NO Is normal display available after replacement of AD cable? YES NO Is normal display available after replacement of ANALOG PWB? YES NO Are the PD and PH connectors correctly connected? YES NO Are there normal outputs of 180V, 80V, and D+5V in the POWER unit? YES Failure in the plasma display module. Refer to No energization of POWER circuit. Make correct connections. Failure in ANALOG PWB Failure in the AD cable.
4-8
TROUBLE SHOOTING No video in NTSC Mode YES Signal Y is available at TP9003. NO There is a VIDEO signal at TP9007. NO There is a VIDEO YES Failure in signal at Pin 1 of Q9009/9011/ the POYC connector. Q9012/ Q901. YES There is an FSC signal (3.5MHz sine wave) at TP9008. YES There is an 8FSC signal (28.63MHz sine wave) at TP9013. NO There is a vertical sync signal at Pin 1 of IC9004, and also a composite sync signal at Oin 2. NO Failure in Q9010/ Q9015/Q9016/Q9023. Failure in Q9001 ~ Q9003. 6
NO Failure in the V-I/O board.
YES There is a horizontal sync signal at TP9011. YES There is a vertical sync signal at TP9012. YES Failure in the peripheral area of IC9086. NO NO
YES Failure in IC9004.
NO Failure in Q9013/ Q9017/ Q9018 or in the pre-stage.
4-9
TROUBLE SHOOTING No PAL Reproduction YES Signal Y is available at TP5004. NO There is a VIDEO signal at TP5030. NO There is a VIDEO YES Failure in signal at Pin 1 of Q5036/Q5004 the POYC connector. ~Q5006. NO Failure in the V-I/O board. YES There in an FSC signal (3.58MHz sine wave) at Pin 19 of IC5007. YES Pin 10 of IC5007 is led to LO. NO Failure in the peripheral area of Q5023. Failure in Q5007/Q5046/IC5015. 7
YES Failure in the peripheral area of IC5007
NO Failure in the peripheral areaof Q5035.
4-10
TROUBLE SHOOTING No color Reproduction YES
RGB signal is available at Pins 1, 3, 5 of the POVD connector. NO R-Y/B-Y signal is available at Pins 51 and 52 of IC5008. NO R-Y/B-Y signal is available at Pins 7 and 8 of IC5012. NO R-Y/B-Y signal is available at Pins 26 and 27 of IC5009. NO
Failure in ANALOG PWB
YES
Failure in the peripheral area of IC5008.
YES
Failure in the peripheral area of IC5012.
YES
Failure in the peripheral area of IC5009.
Failure in the SECAM demodulation system for SECAM. Failure in the peripheral area of IC5010 (SECAM demodulation system) if there is R-Y/B-Y signal is available at Pins 12/13 of IC5010. If there is no such signal, it is then a failure in the Y/C separator circuit (or IC5008).
4-11
TROUBLE SHOOTING No NTSC color generation YES
Signal C is available at Pin 13 of IC5008. NO Signal C is available at Pin 14 of IC5006. NO Signal C is available at TP9004. NO To Step 6 (Page 4-9)
Failure in the peripheral area of IC5008.
YES
Failure in the peripheral area of IC5006.
YES
Failure in Q9005 ~ Q9008.
No PAL color generation
Signal C is available at Pin 13 of IC5008. NO Signal C is available at Pin 16 of IC5006. NO Signal C is available at TP9005. NO To Step 7 (Page 4-10)
YES
Failure in the peripheral area of IC5008.
YES
Failure in the peripheral area of IC5006.
YES
Failure in Q5009/ Q5047/ IC5016.
No SECAM color generation
Signal C is available at TP5017. NO Failure in the peripheral area of IC5017.
YES
Failure in the peripheral area of IC5006.
4-12
TROUBLE SHOOTING Abnormality in the sync system
Enter a color bar signal input.
Is it a VIDEO input? YES Is there a video signal at TP1025?
NO
Is it an HD/DVD input? YES
NO
NO
Is there a video signal at Pin 2 of the "HD" connector? YES
NO
Is threr a sync signal NO at Pin 8 and 10 of the "PC" connector? YES VI/O PWB defective.
YES
Is there a sync signal at Pins 6 and 8 of the "VD" connector?
NO
VIDEO PWB defective.
Are there a clock signal synchronized with the input signal, a horizontal sync signal, and a vertical sync signal respectively at Pins 49, 51, and 53 of the "AD" connector? YES Is normal display available after replacement of AD cable? NO Is normal display available after replacement of ANALOG PWB? NO Failure in the plasma display module.
NO
ANALOG PWB defective.
NO
Failure in the AD cable.
NO
Failure in ANALOG PWB
4-13
TROUBLE SHOOTING No audio signal from speaker output YES YES
Audio signal is available at POSR/POSL. NO Audio signal is available at TP3004/3005. NO Audio signal is available at Pins 10/21 of IC3001. NO Audio signal is available at TP3001/3002 NO Audio signal is available at TP4002/4003. NO Audio signal is available at Pins 1/3/4/6/8/10 of IC4001. NO Check each PHONO pin input.
Voltage is 3V or about TP3003.
Failure in IC3003.
YES
8
NO Failure in Q3003 and Q3004.
YES Failure in the peripheral area of IC3002. YES Failure in the peripheral area of IC3001. YES Failure in the peripheral area of IC4002.
YES Failure in the peripheral area of IC4001.
4-14
TROUBLE SHOOTING No audio output from AUDIO OUT YES
Audio signal is available at TP4006/4007. NO Audio signal is available at Pins 1/3 of the POMS connector. NO To Step 8 (Page 4-14)
Check the Super-woofer side.
YES
Faiurte in IC4003
4-15
METHOD OF ADJUSTMENTS I. Application This specification covers the method of adjustments for the color plasma display "PX-42M2A/G" for domestic users.
II. Adjustment items 1. Setting and confirmation before adjustments 2. Adjustment of µPC1885 3. Adjustment of image level (M52327SP) 3-0. Lowpass Filter Level Adjustment 3-1. Adjustment of HD/DVD level 3-2. Adjustment of video level 3-3. Adjustment of PC/RGB level 3-4. Adjustment of sub-brightness 3-5. Adjustment of sub-contrast 4. Setting for APL control 5. Unit inspection for ANALOG PWB and VIDEO PWB 5-1. Setting of inverse gamma 5-2. Confirmation of video siganls 5-3. Confirmation of video control siganls 5-4. Confirmation of HD/DVD signal processing 5-5. Confirmation of HD/DVD signal mode 5-6. Confirmation of PC 400-line mode 5-7. Confirmation of PC VGA mode 5-8. Confirmation of PC SVGA mode 5-9. Confirmation of PC MAC signal mode 5-10. Confirmation of APL correction data 5-11. Detection of fan stop 5-12. Confirmation of short-circuit test panel crack detection signal 6 . Data writing for plug and play 7 . Setting and confirmation before shutdown