Panasonic PT56DLX75 - 56" DLP TV User manual

ORDERNO. MKE0508855C1
Multi MediaDisplay
PT-56DLX75 / PT-61DLX75
SPECIFICATIONS
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2005 PanasonicShikoku Electronics Co., Ltd. All rights
reserved. Unauthorized copying and distribution isaviolation of
law.
1. SAFETY PRECAUTIONS
1.1. GENERALGUIDELINES
1. For continued safety, no modification of anycircuitshouldbe
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attempted.
2. Disconnect AC Plug before disassembling thisunit.
3. Itisadvisableto use an isolation transformer inthe AC supply
before servicing.
4. When servicing, observe the original lead dress. Ifashort circuit
isfound, replace all parts which have been overheated or
damaged bythe short circuit.
5. After servicing, see to itthat all the protective devices such as
insulation barriers, insulation papers, shield, and isolation R-C
combinations etc. are properlyinstalled.
6. After servicing, be sure to restore the wires, leads, insulation
barriers, shields, etc.
7. After servicing, make the leakage current checks to prevent the
customer from being exposed to shock hazards.
Caution:
Use aseparate Isolation Transformer for thisunitwhen servicing.
1.2. LEAKAGECURRENTCOLDCHECK
1. Unplug the AC cord and connect ajumper between the two
prongs on the plug.
2. For physicallyoperated power switches, turn power on. Otherwise
skipstep 2.
3. Measure the resistance value, with an ohmmeter, between the
jumpered AC plug and each exposed metalliccabinet part on the
receiver, such as screwheads, connectors, etc. When the exposed
metallicpart has areturn path to the chassis, the reading should
be between 1M and 12 M . When the exposed metal does not
have areturn path to the chassis, the reading must be infinity.
1.3. LEAKAGECURRENTHOTCHECK
1. Plug the AC cord directlyinto the AC outlet.
Donot use an isolation transformer for thischeck.
2. Connect "A"to exposed metallicpart on the set. And connect "B"
to agood earth ground, as showninFigure 1.
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3. Use an AC voltmeter, with 1k /Vor more sensitivity, to measure
the potential across the resistor.
4. Check each exposed metallicpart, and measure the voltage at
each point.
5. Reverse the AC plug inthe AC outlet and repeat each of the above
measurements.
6. The potential at anypoint shouldnot exceed 0.25 VRMS.
Aleakage current tester (Simpson Model 228 equivalent) maybe
used to make the hot checks. Leakage current must not exceed 1/
2mA. Incase ameasurement isoutside of the limits specified,
there isapossibilityof shock hazard, and the receiver shouldbe
repaired and rechecked before itisreturned to the customer.
Figure 1
1.4. UV-PRECAUTION
1. Besure to disconnect the AC Plug when replacing the lamp.
2. Since the lamp reaches averyhigh temperature during its
operation, waituntil ithas completelycooled off when replacing
the Lamp Unit.
3. The lamp emits small amounts of UV-Radiation.
Avoiddirect-eyecontact bycovering the Lamp and wearing the
UVprotective glasses.
4. The high pressure lamp involves arisk of explosion.
Figure 2
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1.5. TEMPERATUREDETECTIONFORTHELAMP UNIT
This projectorhas bimetal (Thermostat) contacting the lampunit toprotect the lamp. If the
temperature of the lampexceeds 120 °C, the bimetal will operate toturnoff the power.
The installedposition of the bimetal is showninthe illustration.
To recoverthe bimetal fromits off state, press the protrusion of the bimetal unit until hearclick.
Figure 3
2. PREVENTION OF ELECTROSTATIC DISCHARGE
(ESD) TO ELECTROSTATICALLY SENSITIVE (ES)
DEVICES
Some semiconductor(solidstate) devices canbe damagedeasilybystatic electricity. Such
components commonlyare calledElectrostaticallySensitive (ES) Devices. Examples of typical
ES devices are integratedcircuits and some field-effect transistorsandsemiconductor"chip"
components. The following techniques shouldbe usedtohelpreduce the incidence of
component damage causedbyelectrostatic discharge (ESD).
1. Immediatelybefore handling anysemiconductor component or
semiconductor-equipped assembly, drainoff anyESDon your
bodybytouching aknownearth ground. Alternatively, obtainand
wear acommerciallyavailabledischarging ESDwrist
strap,whichshouldbe removed for potential shock reasons prior
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to applying power to the unitunder test.
2. After removing an electrical assemblyequipped with ES devices,
place the assemblyon aconductive surface such as aluminum
foil, to prevent electrostaticcharge buildup or exposure of the
assembly.
3. Use onlyagrounded-tipsoldering iron to solder or unsolder ES
devices.
4. Use onlyan antistaticsolder removal device. Some solder
removal devices not classified as "antistatic(ESDprotected)" can
generate electrical charge sufficient to damage ES devices.
5. Donot use freon-propelled chemicals. These can generate
electrical charges sufficient to damage ES devices.
6. Donot remove areplacement ES device from its protective
package until immediatelybefore you are readyto install it. (Most
replacement ES devices are packaged with leads electrically
shorted together byconductive foam, aluminum foil or
comparableconductivematerial).
7. Immediatelybefore removing the protective material from the
leads of areplacement ES device, touch the protective material to
the chassisor circuitassemblyinto which the device will be
installed.
CAUTION :
Besure no power isapplied to the chassisor circuit, and observe
all other safetyprecautions.
8. Minimize bodilymotions when handling unpackaged replacement
ES devices. (Otherwise harmless motion such as the brushing
together of your clothes fabricor the lifting of your foot from a
carpeted floor can generate staticelectricity(ESD)sufficientto
damage an ES device).
3. ABOUT LEAD FREE SOLDER (PbF)
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4. SERVICE NOTES
5. DISASSEMBLY/ASSEMBLY PROCEDURES
5.1. CABINET SECTION
5.2. OPTICALBLOCK SECTION
6. ADJUSTMENT PROCEDURES 1
7. ADJUSTMENT PROCEDURES 2
8. TROUBLESHOOTING HINTS
8.1. TROUBLESHOOTING HINTS FORBLOCK LEVEL REPAIR
9. BLOCK DIAGRAMS
10. SCHEMATIC DIAGRAMS
10.1. SCHEMATICDIAGRAMAND CIRCUITBOARD LAYOUTNOTES
10.2. INTERCONNECTIONSCHEMATICDIAGRAM
10.3. FRONTJACK (CIRCUITBOARD FJ) SCHEMATICDIAGRAM
10.4. OPERATIONSCHEMATICDIAGRAMS
10.5. VOLTAGECHART
11. CIRCUIT BOARD LAYOUT
11.1. FRONTJACK (CIRCUITBOARD FJ) C.B.A.
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11.2. OPERATIONC.B.A.
12. EXPLODED VIEWS
12.1. MAINPARTS SECTION
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12.2. FRONTAND BASE SECTION
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12.3. DISPLAYSECTION
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12.4. SCREENSECTION
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12.5. OPTICALBLOCK SECTION
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12.6. TV UNITSECTION
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12.7. PACKING PARTS AND ACCESSORIES SECTION
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13. REPLACEMENT PARTS LIST
BEFORE REPLACING PARTS, READ THE FOLLOWING:
13.1. REPLACEMENTNOTES
13.1.1. General Notes
1. Use onlyoriginal replacement parts:
To maintainoriginal function and reliabilityof repaired units, use
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onlyoriginal replacement parts which are listed with theirpart
numbers inthe parts list.
2. IMPORTANTSAFETY NOTICE
Components identified bythe sign have special characteristics
important for safety. When replacing anyof these components,
use onlythe specified parts.
3. SPECIALNOTE
All integrated circuits and manyother semiconductor devices are
electrostaticallysensitive and therefore require the special
handling techniques described under the "ELECTROSTATICALLY
SENSITIVE (ES) DEVICES" section of thisservice manual.
4. Parts with no Ref. No. in"EXPLODEDVIEWS" are not supplied.
And some Ref. No. will be skipped. Besure to make your orders
of replacement parts according to the parts list.
5. Parts different inshape or size maybe used. However, only
interchangeableparts will be supplied as service replacement
parts.
6. Definition of Parts supplier:
A. Parts with mark "PSEC"inthe Remarks column are supplied
from PSEC.
B. Parts without mark inthe Remarks column are supplied from
PASC-NPC.
7. Item numbers with capital letter E(Example: E10, E20,...)inthe
Ref. No. column are showninthe exploded views.
8. Parts whose Ref. Nos. are the same are interchangeableas
replacement parts. Anyof these parts maybe ordered and used
as areplacement part.
13.1.2. MainPartsReplacement Notes
1. Section No. of parts showninExploded Viewsare indicated inthe
Remarks column.
2. Abbreviation
RTL: Retention Time Limited
Thisindicates that the retention time islimited for thisitem. After
the discontinuation of thisitem inproduction, itwill no longer be
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available.
3. After replacing the Optical Block Unit(Ref. No. 21) or the Base
BodyUnit(Ref. No. 40), be sure to perform "ADJUSTMENTof the
Optical Block Unit."Refer to "WHENINSTALLING THEOPTICAL
BLOCK UNITORTHEBASE BODYUNITINTO THEUNITATTHE
USER'S LOCATION"; inADJUSTMENTPROCEDURES 1.
4. The Infrared Remote Control Unit(Ref. No. 109) replacement part
isavailableas acomplete assemblyunitonly. Donot tryto
disassemblethe Infrared Remote Control Unit.
13.1.3. Electrical Replacement Notes
1. Unless otherwise specified;
All resistors are in, K= 1,000 , M= 1,000 k .
2. Abbreviation
RTL:
Retention Time Limited
Thisindicates that the retention time islimited for thisitem. After
the discontinuation of thisitem inproduction, itwill no longer be
available.
NR:
Non RepairableBoard Ass'y
MGFCHIP:
Metal Glaze FilmChip
CCHIP:
CeramicChip
COMPLX CMP:
Complex Component
WFLMPRF:
Wirewound Flameproof
C.B.A.:
CircuitBoard Assembly
P.C.B.:
Printed CircuitBoard
E.S.D.:
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ElectrostaticallySensitive Devices
3. When replacing 0resistor, awire can be substituted for it.
13.2. MECHANICALREPLACEMENTPARTS LIST
Definition of Parts supplier:
1. Parts with mark "PSEC"inthe Remarks column are supplied from
PSEC.
2. Parts without mark inthe Remarks column are supplied from
PASC-NPC.
MECHANICALREPLACEMENTPARTS
Ref. No. PartNo. PartName& Description Remarks
1LSXY0883 BASE BODY 2
2LSXY0886 EXAUSTFAN UNIT 2
5LSGL0427 INFRARED PIECE 2
6LSMC0124 PANEL SPRING 1,2,6
7LSKC0008 LATCH 1,2
8LSGH0055 FRONTJACK SHEET 2
9LSYF0566 FRONTCOVER UNIT(A) 1
9LSYF0558 FRONTCOVER UNIT(B ) 1
10 LSJA0543 CONNECTOR CABLEW/PLUG 2
11 LSKA0030 RUBBER FOOT 2
12 LSYF0563 OPTICAL COVER UNIT 2
13 LSYK1618 LAMPCOVER UNIT 2
14 K1PB20A00021 20-PIN CABLE 1,6
15 LSMG0161 SPACER 2
16 LSMG0162 SPACER 2
17 LSYF0585 REAR COVER UNIT(A) 1
17 LSYF0571 REAR COVER UNIT(B ) 1
18 LSMF0408 SHEET 2
19 J0KG00000012 FILTER FOR EMI / EMC (CORES) 2,6
20 J0KG00000011 FILTER FOR EMI / EMC (CORES) 2,6
21 LSXA0690-HB OPTICAL BLOCK UNIT(A) 1,5RTL PSEC
21 LSXA0691-HB OPTICAL BLOCK UNIT(B ) 1,5RTL PSEC
22 LSYK1589 SCREEN UNIT(A) 3,4
22 LSYK1592 SCREEN UNIT(B ) 3,4
23 TMM14414 STRIKE 1
24 L6FANEHH0004 FAN 3 2
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