Panasonic CT30WX54J - 30" COLOR TV User manual

MTNC040521A1
B19 Canada: B05
Color Television
CT-30WX54J / CT-30WX54UJ/ CT-30WC14J / CT-30WC14UJ
GN1
Please fileand use thismanual together with the service manual for
Model CT-32HL44J, Order No. MTNC040418C1.
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1. Safety precautions
General guidelines
Anisolation transformershouldalways be usedduring the servicing of a receiverwhose
chassis is not isolatedfromAC powerline. Use a transformerof adequate powerrating as this
protects the technicianfromaccidents resulting inpersonal injuryfromelectrical shocks. It will
alsoprotect the receiverfrombeing damagedbyaccidental shorting that mayoccurduring
servicing.
Whenservicing, observe the original leaddress, especiallyinthe high voltage circuit. Replace
all damagedparts (alsoparts that showsigns of overheating.)
Always replace protective devices, suchas fishpaper, isolation resistors and capacitors, and
shields afterservicing the receiver. Use onlymanufacturer’s recommendedrating forfuses,
circuits breakers, etc.
High potentials are present whenthis receiveris operating. Operation of the receiverwithout
the rearcoverintroduces dangerforelectrical shock. Servicing shouldnot be performedby
anyone who is not thoroughlyfamiliarwiththe necessaryprecautionswhenservicing high
voltage equipment.
Extreme care shouldbe practicedwhenhandling the picture tube. Rough handling maycause it
toimplode due toatmospheric pressure. (14.7 lbs persq. in.). Donot nick orscratchthe glass
orsubject it toanyundue pressure. Whenhandling, usesafetygoggles and heavygloves for
protection. Discharge the picture tube byshorting the anode tochassis ground (not tothe
cabinet ortoothermounting hardware). Whendischarging connect coldground (i.e. dag
ground lead) tothe anode witha wellinsulatedwire oruse a grounding probe.Avoidprolonged
exposure at close range tounshieldedareas of the picture tube toprevent exposure tox ray
radiation.
The test picture tube usedforservicing the chassis at the benchshouldincorporate safety
glass and magnetic shielding. The safetyglass provide shielding forthe tube viewing area
against x rayradiation as well as implosion. The magnetic shieldlimits the x rayradiation
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around the bell of the picture tube inaddition tothe restricting magnetic effects. Whenusing a
picture tube test jigforservice, ensure that the jigis capable of handling 50kV without causing
x rayradiation.
Before returning a servicedreceivertothe owner, the service technicianmust thoroughlytest
the unit toensure that is completelysafe tooperate. Donot use a line isolation transformer
whentesting.
Leakage current coldcheck
Unplug the A.C. cordand connect a jumperbetweenthe twoplug prongs.Measure the
resistance betweenthe jumperedAC plug and expose metallic parts suchas screwheads,
antenna terminals, control shafts, etc. If the exposedmetallic part has a returnpathtothe
chassis, the reading shouldbe between240k and 5.2M . If the exposedmetallic part does
not have a returnpathtothe chassis, the reading shouldbe infinite.
Leakage current hot check
Plug the AC corddirectlyintothe AC outlet. Donot use anisolation transformerduring the
check.
Connect a 1.5k 10 watt resistorinparallel witha 0.15 Fcapacitorbetweenanexposed
metallic part and ground. Use earthground, forexample a waterpipe.
Using a DVM witha 1000 ohms/volt sensitivityorhigher, measure the AC potential across the
resistor.
Repeat the procedure and measure the voltage present withall otherexposedmetallic parts.
Verifythat anypotential does not exceed0.75 volt RMS. A leakage current tester(sucha
Simpson model 229, Sencore model PR57 orequivalent) maybe usedinthe above procedure, in
whichcase anycurrent measure must not exceed0.5 milliamp. Ifanymeasurement is out of the
specifiedlimits, there is a possibilityof a shock hazardand the receivermust be repairedand
recheckedbefore it is returnedtothe customer.
Hot check circuit
Insulation test
Connect aninsulation testerbetweenanexposedmetallic part and A.C. line. Apply1500VAC/
60Hz for1 second. Confirm that the current measurement is 0.5mA ~ 2.0mA. Repeat test with
othermetallic exposedparts.
X rayradiation
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WARNING
The potential source of x rayradiation inthe TV set is inthe high voltage section and the picture
tube.
NOTE
It is important touse anaccurate, calibratedhigh voltage meter.
Set the brightness, picture, sharpness and colorcontrols tominimum.
Measure the high voltage. Witha 480i signal the high voltage shouldbe 30.5kV ± 0.3kV and with
a 1080i signal the high voltage shouldbe 30.5kV ± 0.3kV. If the upperlimit is out of tolerance,
immediate service and correctionis requiredtoinsure safe operation and toprevent the
possibilityof premature component failure.
Horizontal oscillatordisable circuit test
This test must be performedas a final check before the receiveris returnedtothe customer.
See horizontal oscillatordisable circuit procedure check inthis manual.
2. Service notes
NOTE
These components are affixedwithglue. Be careful not tobreak ordamage anyfoil underthe
component orat the pins of the ICs whenremoving. Usuallyapplying heat tothe component for
a short time while twisting withtweezers will break the component loose.
Leadless chipcomponent (surface mount)
Chipcomponents must be replacedwithidentical chips due tocritical foil track spacing. There
are no holes inthe boardtomount standardtransistors ordiodes. Some chips capacitoror
resistorboardsolderpads mayhave holes through the board,howeverthe hole diameterlimits
standardresistorreplacement to1/8 watt. Standardcapacitormayalsobe limitedforthe same
reason. It is recommendedthat identical components be used.
Chipresistorhave a three digit numerical resistance code, 1st and 2nd significant digits and a
multiplier. Example: 162 = 1600 or1.6k resistor, 0 = 0 (jumper).
Chipcapacitors generallydo not have the value indicatedon the capacitor. The colorof the
component indicates the general range of the capacitance.
Chiptransistors are identifiedbya twolettercode. The first letterindicates the type and the
second letter, the grade of transistor.
Chipdiodes have a twoletteridentification code as perthe code chart and are a dual diode pack
witheithercommon anode orcommon cathode. Check the parts list forcorrect diode number.
Component removal
1. Use solder wick to remove solder from component end caps or
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terminal.
2. Without pulling up, carefullytwist the component with tweezers to
break the adhesive.
3. Donot reuse removed leadless or chipcomponents since they
are subject to stress fracture during removal.
Chipcomponent installation
1. Put asmall amount of solder on the board soldering pads.
2. Holdthe chipcomponent against the soldering pads with
tweezers or with aminiature alligator clipand applyheat to the
pad area with a30 watt iron until solder flows. Donot applyheat
for more than 3seconds.
Howtoreplace flat ic (requiredtools)
1. Remove the solder from all of the pins of aFlat ICbyusing a
desolder braid
2. Put the iron wire under the pins of the Flat ICand pull itinthe
direction indicated whileheating the pins using asoldering iron.
Asmall awl can be used instead of the iron wire.
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3. Remove the solder from all the pads of the Flat ICbyusing ade
solder braid
4. Position the new Flat ICinplace (applythe pins of the Flat ICto
the soldering pads where the pins need to be soldered). Properly
determine the positions of the soldering pads and pins by
correctlyaligning the polaritysymbol
5. Solder all pins to the soldering pads using afine tipped soldering
iron
6. Check with amagnifier for solder bridge between the pins or for
dryjoint between pins and soldering pads. To remove asolder
bridge, use ade solder braidas showninthe figure below
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IMPORTANT
To protect against possible damage tothe solidstate devices due toarching orstatic discharge,
make certainthat all ground wires and CRTDAG wire are securelyconnected.
CAUTION
The power supplycircuitisabove earth ground and the chassis
cannot be polarized. Use an isolation transformer when servicing
the receiver to avoiddamage to the test equipment or to the
chassis. Connect the test equipment to the proper ground(hot) or
(cold) when servicing, or incorrect voltages will be measured.
WARNING
Thisreceiver has been designed to meet or exceed applicable
safetyand x-rayradiation protection as specified bygovernment
agencies and independent testing laboratories.
To maintainoriginal product safetydesign standards relative to x-
rayradiation and shock and fire hazard, parts indicated with the
symbol on the schematicmust be replaced with identical parts.
Order parts from the manufacturer’spartscenter using the parts
numbers showninthisservice manual, or provide the chassis
number and the part reference number.
For optimum performance and reliability, all other parts shouldbe
replaced with components of identical specification.
HORIZONTALOSCILLATOR DISABLE CIRCUIT
This chassis employs a special circuit toprotect against excessive high voltage and beam
current. If, foranyreason, the high voltage and beamcurrent exceeda predeterminedlevel this
protective circuit activates and detunes the horizontal oscillatorthat limits the high voltage. The
over-voltage protection circuit is not adjustable. However, if components indicatedbythe
symbol on the schematic ineitherthe horizontal sweepsystemorthe over-voltage protection
circuit itself are changed, theoperation of the circuit shouldbe checkedusing the following
procedure:
Equipment neededtocheck the disabledcircuit:
1. High voltage meter (0 ~ 50kV)
2. Variac or isolation transformer
3. D.C. current meter
4. Digital voltmeter
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PREPARATION
1. Connect receiver to A.C. 120 Volts. Donot turn ON.
2. Connect HIGHVOLTAGEmeter to 2nd anode (H.V. button).
NOTE
Use coldground fornegative lead.
3. Connect the ammeter serial from the flyback anode lead to the
picture tube anode socket.
PROCEDURE
1. Applyawhite pattern
2. Confirm that beam current is2.0_mA.
3. Adjust VR524 so that high voltage is30.5± 0.3kV.
4. Adjust VR538 so that digital meter reads 2.3± 0.05V
5. Applyablack pattern
6. Confirm that high voltage protector (SOS) operates at 35.5kV or
less byadjusting VR524.
7. Turn VR524 counter clockwise, turn tv on and applyawhite
pattern.
8. Adjust VR524 so that high voltage meter reads 30.5± 0.3kV
9. Once the adjustment iscompleted, applyabond on VR538 and
VR538. Confirm B+ 142V ± 6.0V with 120V A.C. applied.
NOTE
If high voltage is not withinthe specifiedlimit the cause must be determinedbefore the receiver
is returnedtothe owner.
3. About lead free solder (PbF)
NOTE
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Leadis listedas (Pb) inthe periodic table of elements. / Inthe information below, Pbwill referto
leadsolder, and PbF will refertoLeadFree Solder. / The leadfree solderusedinour
manufacturing process and discussedbelowis (Sn+Ag+Cu). / Thatis Tin(Sn), Silver(Ag) and
Copper(Cu) although othertypes are available.
This model uses PbFree solderinit’s manufacture due toenvironmental conservation issues.
For/ service and repairwork, we’dsuggest the use of Pbfree solderas well, although Pbsolder
maybe / used. / PCBs manufacturedusing leadfree solderwill have the “PbF” ora leaf symbol
stampedon the / back of PCB.
CAUTION
-Pb free solder has ahigher melting point than standard solder.
Typicallythe melting point is50 ~ 70 °F (30 ~ 40 °C)higher. Please
use ahigh temperature soldering iron and set itto 700 ± 20 °F (370
± 10 °C).
-Pb free solder will tend to splash when heated too high (about 1100
°F or 600 °C). / Ifyou must use Pb solder, please completely
remove all of the Pb free solder on the pins or solder area before
applying Pb solder. Ifthisisnot practical, be sure to heat the Pb
free solder until itmelts, before applying Pb solder.
-After applying PbF solder to doublelayered boards, please check
the component side for excess solder which mayflow onto the
opposite side.
SuggestedPbfree solder
There are several kinds of Pbfree solderavailable forpurchase. This product uses Sn+Ag+Cu
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(tin, silver, copper) solder. However, Sn+Cu(tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder
canalsobeused.
4. Receiver feature table
FEATURE/MODEL CT-30WX54J/UJ CT-30WC14J/UJ
CHASSIS BP419 DP419
MICRO 256K
MENU LANGUAGE ENG/SPAN/FR
CLOSE CAPTION X
V-CHIP (USA/CANADA X
CHANNELINFO BANNER X
VIDEO INPUTSKIP SKIP
CHANNELCOUNT 181
PIP (1T), 2TPIP (2T), 2TSPLIT 2TSPLIT
REMOTE CONTROL(W/LIGHT) EUR7603ZF0
CRTSUPPLIER MTPD D-COM
FAMILY GN1
COMB FILTER MOTION ADP, 3DY/C 3 LINE
HEC/VEC (X=BOTH) X
VM X (SELECTABLE)
V/A NORM (X=BOTH) X
COLOR TEMP X
AIP X
PRESET/INPUTLABELING X
VIDEO PICTURE MEMORY X
DIGITALSCAN RATE 1080i, 480p
NTSC LINE DOUBLER 480pPROGRESSIVE
MTS/SAP/DBX X
BUILT-IN AUDIO POWER 15W X 2 7.5W X 2
No. OFSPEAKERS 2
BASS/BALANCE/TREBLE
CONTROL X
AI SOUND X
SURROUND X
SPATIALIZER/BBE BBE
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FEATURE/MODEL CT-30WX54J/UJ CT-30WC14J/UJ
A/V IN (REAR/FRONT) 4(3/1) 3(2/1)
PROGRAM OUT X
AUDIO OUT(FAO: F, VAO:V) F, V FAO
COMPONENTINPUT(Y, Pb, Pr) 2
S-VHS INPUT(REAR/FRONT) 2/1 1/1
HDMI/HDCP INPUT X
WEIGHT(KG/LB) 54_KG/120_LB
DIMENSIONS (W/D/H) mm 1004.0 / 670.0 / 706.0
Note:
Specifications are subject tochange without notice orobligation. Dimensions and weights are
approximate.
5. Board description table
BOARD CT-30WX54J/UJ CT-30WC14J/UJ DESCRIPTION
A-BOARD TNP2AH061AC TNP2AH061AE MAIN CHASSIS
D-BOARD TNP2AH062AE HIGH VOLTAGE AND
DEFLECTION
DG-BOARD TNP2AA173AD DIGITALVIDEO
DF-BOARD TNP2AA172 DYNAMIC FOCUS
H-BOARD TNP2AA174AB TNP2AA174AG REAR A/V
L-BOARD TNP2AA169 CRTBOARD
K-BOARD TNP2AA171AD KEY BOARD
G-BOARD TNP2AA170AD FRONTA/V
NOTE
Whenordering a replacement boardassembly, append an“S” tothe boardnumber
EXAMPLE
To orderthe A Board, the replacement boardis TNP2AH061ADS
NOTE:
The DG-Boardis non-serviceable. If this boardis defective, replace it witha newboard.
6. TV Location of controls
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7. Auto diagnosis feature
This receiverincorporates a newself diagnosis feature. Withthis newfeature will be easierfor
the techniciantodetect the failures. There is a LED locatedbythe keyboardon the front panel,
this LED will start flashing whena failure is detectedbythe circuits locatedinspecific areas,
depending on howmanytimes the LED is flashing, this will tell you what circuit shouldbe
checked. Make a count of flashing and see the table shownbelow. Please use this feature
effectivelyespeciallyforintermittent problems.
SOS of front LED
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FLASHES POSSIBLE CIRCUIT SOS
1 POWER+140 140 OCP
2LOW B+ D.C. SOS 2
3 N/A N/A
4 SUB 9V SUB 9V
5 HI VOLTAGE HHS GC2M
6 IC4001 GC3 FM
7IC4201 GC3 FS
8IC4401 GC3 I
9 DIGITALTO
DIGITAL
INTERFACE LOCK
DDILOCK
AFTER THE COUNT
Proceedtocheck that area, verifywhat boardis the problemlocated, this waythe area tocheck
will be reduceduntil the failure is found.
8. EEPROM copy jig
This CTV has a feature that allows toclone orback-up mainEEPROM data adjustments froma
CTV tootherbyconnecting a jigtothe CTV set. A jigpart numberTXFJIG02SER, is available
through Matsushita/Panasonic Services.
Preparation:
To connect this jig, remove the lowerback coveras instructedon disassemblyforservice
section on this service manual and insert the jigintoA15 connectorlocatedon the A-Board.
Procedure tocopydata:
1. Enter to service mode and displayservice menu.
2. Select “AREA”DAC and then press ACTIONbutton on remote to
enter. Press VOLright/left to select one of the following options
then press ACTION:
-Select ALL to copyall mainEEPROMdata
-Select ADJto copyonlyadjustment data.
-Select FIXto copyonlyfixdata
3. To copydata from mainEEPROMto jig, select “IN EX” DAC and
press ACTIONbutton on remote.
4. To copydata from jigto mainEEPROM, select “EX IN”DAC and
press ACTIONbutton on remote.
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9. Back cover removal
NOTE:
Appearance numberof inputs mayvarydepending on the model.
10. Service mode (electronic adjustments)
This receiverhas electronic technologyusing the IC bus concept. It performs as a control
function and it replaces manymechanical controls. Insteadof adjusting mechanical controls
individually, manyof the control functions are nowperformedbyusing “on screendisplay
menu”. (The service adjustment mode).
NOTE
It is suggestedthat the technicianreads all the waythrough and understand the following
procedure forentering/exiting the service adjustment mode; thenproceedwiththe instructions
working withthe receiver. Whenbecoming familiarwiththe procedure, the flowchart forservice
mode maybe usedas a quick guide.
Quick entrytoservice mode
Whenminoradjustments needtobe done tothe electronic controls, the method of entering the
service mode without removal of the cabinet back is as follows using the remote control:
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1. Select SET-UPicon and select CABLE mode.
2. Select TIMERicon and set SLEEP time for 30 Min.
3. Exitmenus.
4. Tune to the channel 124.
5. Adjust VOLUME to minimum (0).
6. Press VOL(decrease) on receiver. Red “CHK”appears inupper
corner.
NOTE
Afterreceiveris set intoservice mode, set TIMER back toNO.
To toggle betweenaging and service modes:
While the “CHK” is displayedon the left top cornerof the CRT, pressing “ACTION” and “VOL”
UP on the TV simultaneouslywill toggle betweenthe modes. Red“CHK” forserviceand yellow
“CHK” foraging.
7. Press POWERon the remote control to displaythe service
adjustment modes menu, select adjustment bypressing the
volume right/left buttons and channel up/downbuttons on the
remote and ACTIONto enter the adjustment.
NOTE
Some adjustments are available onlyinsome modes (480i, 480p, 1080i); it is neededtoapplythe
format. A 1080i, 480p, 480i patterncanbe obtainedfromPanasonic’s TU-DST51 set-top box DTV
decoder.
Exiting the service mode:
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This TV goes out fromservice mode whenit is unpluggedorturnedOFF. To exit the service
mode, turnthe TV OFF orunplug the TV fromA.C.
Othermethod
Press ACTION and POWER on the receiversimultaneouslyforat least 2 seconds.
The receivermomentarilyshuts off; thencomes back on tunedtochannel 3 witha preset level
of sound.
Anyprogrammedchannels, channels caption data and some others userdefinedsettings will
be erasedwhenexitedbypressing ACTION and POWER on receiver.
IMPORTANTNOTE
Always check that the TV exits the service mode.
To confirm colors
Wheninservice mode (red“CHK” is displayed) press RECALL on the remote control toenter
the purityfieldcheck mode
Entering service mode (open-back method)
While the receiveris connectedand operating innormal mode, momentarilyshort test point /
FA1 (A15 pin2) tocoldground (A-Board).
The receiverenters the aging mode.
Yellowletters “CHK” appearinthe upperleft cornerof the screen. / (The volume right/left and
channel up/downwill adjust rapidly).
10.1. Service adjustment defaultvalues for service items
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REGISTER DESCRIPTION FORMAT
NTSC 1080i
ZOOM
MTSIN INPUTLEVEL 21 N/A N/A
SEPAL LOW LEVELSEPARATION 06 N/A N/A
SEPAH HIGH LEVELSEPARATION 19 N/A N/A
CLOCK CLOCK 128 N/A N/A
COLOR COLOR 20 20 N/A
TINT TINT 80 80 N/A
BRIGH SUB-BRIGHTNESS 09 A0 09 A0 N/A
CONT SUB-CONTRAST 02 A0 02 A0 N/A
B-Y_G MAGENTA TINTADJ 3D 3C N/A
CUTG GREEN CUT-OFF 02 16 02 16 N/A
CUTR RED CUT-OFF 02 72 02 72 N/A
CUTB BLUE CUT-OFF 01 EA 01 EA N/A
BRT BRIGHT 0A 34 0A 34 N/A
R DR RED DRIVE 85 85 N/A
B DR BLUE DRIVE 87 87 N/A
R-Y_A R-Y_A 80 80 N/A
HLIN HORIZONTALLINEARITY 53 80 N/A
HPOS HORIZONTALPOSITIONING 03 45 03 CE N/A
HWID HORIZONTALWIDTH B4 77 N/A
PCC PINCUSHION CORRECTION 9B B8 B3
PCCHG PINCUSHION HIGH 38 3E 3E
PCCLG PINCUSHION LOW 39 3E 3E
PCCHS PINCUSHION HIGH 05 05 05
PCCLS PINCUSHION LOW 05 05 05
TOPG TOP CORNER PINCUSHION 58 5A 5A
BTMG BOTTOM CORNER PINCUSHION 58 57 57
TOPSL TOP CORNER PINCUSHION SLICE LEVEL 03 03 03
BTMSL BOTTOM CORNER PINCUSHION SLICE
LEVEL 03 03 03
TRAP TRAPEZOID 80 85 85
PARA PARALLELOGRAM 10 10 10
SIDE E-W PINCUSHION ADJUSTMENT 16 15 15
HTRAP HORIZONTALTRAPEZOID 20 20 20
VRAS VERTICALPOSITION 91 AA A2
VEAMP VERTICALSIZE 01 62 00 B0 01 A4
V-C VERTICALLINEARITY 6E 78 78
V-S VERTICALS CORRECTION 56 56 56
HDAFS HORIZONTALDAFPHASE 00 A4 01 B4 N/A
VTOP VTOP 00 D9 00 D1 00 FA
BDAC BDAC 73 77 N/A
INPIN INPIN 20 20 20
MOIRE MOIRE 80 80 80
G PED G PED 80 N/A N/A
R PED R PED 80 N/A N/A
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REGISTER DESCRIPTION FORMAT
NTSC 1080i
ZOOM
B PED B PED 80 N/A N/A
NOTE:
The above table shows the default values forthe service items, this values mayvarydepending
on the servicedTV.
ID DATA
MODEL NTSC 1080i ZOOM
CT-30WX54J/UJ 00 00 00
CT-30WC14J/UJ 0C 0C 0C
Important Note:
Whenchanging “ID” register, message “Unplug AC toactivate” will appearon the screenand
the set must be unplugged.
11. Reference of PDF links color
12. Schematic Diagrams
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12.1. Schematicnotes inenglish
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