Panasonic PT-47WX52F, PT-47WX52CF, PT-47WX42F, PT-47WX42CF Service Manual

ORDER NO. MTNC020409C1 B2

Service Manual

HDTV MONITOR

Main Manual

(P7W)

Panasonic

Models

Chassis

PT-47WX52F EP824 PT-47WX52CF EP824 PT-47WX42F EP824 PT-47WX42CF EP824

This service manual is issued as a service guide for the models of the P7W family listed above. Included in this manual are a set of schematics, alignment procedures, disassembly procedures and a complete parts list.

“WARNING! This ServiceManualis designed for experiencedrepairtechniciansonly and is not designed for useby the generalpublic. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experiencedprofessional technicians. Any attempt to service or repair the product or products dealt with in this Service Manual by anyone else could result in serious injury or death.”

The service technician is requiredtoreadand follow the “Safety Precautions”and“Important Safety Notice” in the Main Manual.

and distribution is a violation of law.

Important safety notice

Special components are used in this projection television which are important for safety. These components are identified on the schematic diagram by the symbol and printed in BOLD TYPE on the replacement part list. It is

essential that these critical parts are replaced with the manufacturer’s specified replacement part to prevent x-ray radiation, shock, fire or other hazards. Do not modify the original design without the manufacturer’s permission.

Safety precautions

General guidelines

isolation transformer

during the servicing of a PTV whose chassis is not isolated from AC power line. Use a transformer of adequate power rating as this protects the technician from accidents resulting in personal injury from electrical shocks. It will also protect the PTV from being damaged by accidental shorting that may occur during servicing. When servicing, observe the original lead dress, especially in the high voltage circuit. Replace all damaged parts (also parts that show signs of overheating.) Always replace protective devices,suchas fishpaper, isolation resistors and capacitors, and shields after servicing the PTV. Use only manufacturer’s recommended rating for fuses, circuits breakers, etc. High potentials, as high as 32.5kV, are present when this PTV is operating. Operation of the PTV without the rear cover introduces danger for electrical shock. Servicing should not be performed by anyone who is not thoroughly familiar with the necessary precautions when servicing high-voltage equipment.

Extreme care should be practiced when handling the

picture tube

due to atmospheric pressure. (14.7 lbs. per sq. in.). Do not nick or scratch the glass or subject it to any undue pressure. When handling, use safety goggles and heavy gloves for protection. Discharge the picture tube by shorting the anode to chassis ground (not to the cabinet or to other mounting hardware). When discharging connect cold ground (i.e. DAG ground lead) to the anode with a well insulated wire or use a grounding probe.

. Rough handling may cause it to implode

X-ray precautions

The front area (between the projection tube and the lens) is enclosed by a metal box t o ensure positive safety during normal and abnormal conditions when checking and repairing. To fully ensure safety, the following precautions must be observed.

1. Do not remove the lens or metal box.

2. Make sure to turn the power OFF when the lens is removed or when checking the cleanliness of the lens.

3. Do not remove the lens or metal box to check the projection tube for operation by watching it directly. Use a mirror or paper to view the image.

Before returning a serviced PTV to the owner,the service technician must thoroughly test the unit to ensure that is completely safe to operate. Do not use a

line isolation transformer when testing.

Leakage current cold check

Unplug the AC cord and connect a jumper between the two plug prongs. Press the POWER switch ON. Measure the resistance between the jumpered AC plug and expose metallic parts such as screw heads,

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should always be used

antenna terminals, control shafts, etc. If the exposed metallic part has a return path to the chassis, the reading should be between 240kΩ and 5.2MΩ. If the exposed metallic part does not have a return path to the chassis, the reading should be infinite.

Leakage current hot check (see figure 1)

Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during the check. Connect a 1.5kΩ 10 watt resistor in parallel with a

0.15µF capacitor between and exposed metallic part and ground. Use earth ground, for example a water pipe. Using a DVM with a 1000 ohms/volt sensitivity or higher, measure the AC potential across the resistor. Repeat the procedure and measure the voltage present with all other expose metallic parts. Verify any potential does not exceed 0.75 volt RMS. A leakage current tester (such a Simpson model 229, Sencore model PR57 or equivalent) may be used in the above procedure, in which case any current measure must not exceed 0.5 milliamp. If any measurement is out of the specified limits, there is a possibility of a shock hazard and the PTV must be repaired and rechecked before it is returned to the customer.

AC VOLTMETER

COLD WATER PIPE (GROUND)

0.15µF

TO INSTRUMENT’S EXPOSED METAL PARTS

Figure 1. Hot check circuit

1500Ω,10W

Insulation test

Connect an insulation tester between an exposed metallic part and AC line. Apply 1080VAC/60Hz for 1 second. Confirm that the current measurement is 0.5mA ~ 2.0mA. Repeat test with other metallicexposed parts.

X-ray radiation

WARNING: The potential source of x-ray radiation in the

PTV is in the high voltage section and the picture tube.

Note: It is important to use calibrated equipment.

Apply all black video signals (1080i) and confirm high voltage measures 31.5 ± 1.0kV. If the high voltage is not within the range, change C514 to 1800pF, 2000pF, 2400pF or 2700pF until the desired value is obtained. Apply NTSC white pattern and confirm the high voltage measures 30.1 ± 1.5kV. Apply HD 1080I white pattern and confirm the high voltage measures 30.1 ± 1.5kV

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About lead free solder (PbF)

component

Note: Lead is listed as (Pb) in the periodic table of elements. In the information below, Pb will refer to Lead solder, and PbF will refer to Lead Free Solder. The Lead Free Solder used in our manufacturing process and discussed below is (Sn+Ag+Cu). That is Tin (Sn), Silver (Ag) and (Cu) although other types are available.

This model uses Pb Free solder in it’s manufacture due to environmental conservation issues. For service and repair work, we’d suggest the use of Pb free solder as well, although Pb solder may be used.

PCBs manufactured using lead free solder will have the PbF within a leaf symbol stamped on the back of PCB.

Caution

• Pb free solder has a higher melting point than standard solder. Typically the melting point is 50 ~ 70 °F(30~40°C) higher. Please use a high temperature soldering iron and set it to 700 ± 20 °F(370± 10 °C).

• Pb free solder will tend to splash when heated too high (about 1100 °For600°C). If you must use Pb solder, please completely remove all of the Pb free solder on the pins or solder area before applying Pb solder. If this is not practical, be sure to heat the Pb free solder until it melts, before applying Pb solder.

• After applying PbF solder to double layered boards, please check the component side for excess solder which may flow onto the opposite side. (see figure below)

component

remove all of the

excess solder

slice view

solder

Suggested Pb free solder

There are several kinds of Pb free solder available for purchase. This product uses Sn+Ag+Cu (tin, silver, copper) solder. However, Sn+Cu (tin, copper), Sn+Zn+Bi (tin, zinc, bismuth) solder canalsobeused.

0.3mm X 100g

0.6mm X 100g 1.0mm X 100g

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Important safety tests

Measuring H.V.

The anode caps are cemented to the CRTs. To gain access for high voltage measurement, remove the red CRT’s anode lead from the flyback transformer distributor. Grasp the anode lead protective cap at its bottom and squeeze it against the locking cap body inside, rotate 1/4 turn counter clockwise and pull the anode lead sleeve out of the FBT distributor. Connect a high voltage lead (+) from your H.V. meter to the FBT

distributor, and the common (-) to cold ground ( ). (see figure 2).

Grasp protective

Anode lead

rubber cap

Push & rotate

Discharge to CRT chassis

cap counterclockwise to remove

FBT distributor

Figure 2. Removal of FBT leads

Note: Reinsert the anode lead into the FBT

distributor until it is tightly and fully seated. Turn the locking cap clockwise to lock in place.

(EHT) Protector operation check

With the cabinet back removed, apply a nominal 120V AC to the PTV.

Over voltage test Preparation:

1. Turn PTV “OFF”

2. Connect a NTSC signal generator to the antenna terminal.

3. Connect DVM (+) TPD50 and (-) TPD51 on D Board (see figure 4)

4. Connect a H.V. meter (static type, class 0.1) with high voltage leads to high voltage distributor on FBT. (See figure 4)

TPD51 TPD50

D-Board

DVM

D-Board

IC802 PIN 2

OR TPD8

Variable power supply

MA150

100Ω 1/2 W

(+)

(15~25DC)

(-)

HEAT SINK OF Q551

Figure 4. DVM & power supply c onnection.

5. Connect the 15 ~25 VDC variable power supply to (+) TPD8 or IC802 pin 2 (D-Board) and (-) heat sink of Q551 (see figure 4).

Procedures:

1. Apply a NTSC white pattern.

2. Turn PTV ON.

3. Adjust the picture or brightness controls so that the DVM reads 12.4 volts ±0.4 volts.

4. Increase the variable power supply until set turns off. The set should turn off at 12.4 volts ± 0.4 volts (DVM) and high voltage less than 36.4kV.

5. If the DVM reading is other than 12.4 volts (± 0.4 volts), readjust picture or brightness control and repeat steps 3.

6. Turn off the variable supply and confirm that the set will turn on with the remote control.

H.V. METER

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Cold ground

FBT Distributor

CRT

CHASSIS

Figure 3.Measuring H.V.

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About format aspect switching(WX 16:9 or HX 4:3)

Widescreen 16:9 and non-widescreen 4:3 PTVs use the same light box, for this reason is important to set it to the correct version (16:9 or 4:3). To change the format please refer to figure 62 on page 43. Be sure to select the correct format for the serviced PTV.

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Importantsafetynotice...................2

Safetyprecautions........................2

Generalguidelines..................2

X-rayprecautions ..................2

Leakagecurrentcoldcheck...........2

Leakagecurrenthotcheck ...........2

Insulationtest .....................2

X-rayradiation.....................2

About lead free solder (PbF) . . . . . . . ........3

SuggestedPbfreesolder............3

Importantsafetytests....................4

MeasuringH.V.....................4

(EHT) Protector operation check. . . . . . . 4

About format aspect switching. . . . . ........5

Servicenotes ...........................7

Leadless chip component . . . . ........7

Componentremoval ................7

Chip component installation . . ........7

HowtoreplaceFlat-IC...............7

Featuretable............................9

Boardsdesignation.....................10

PTV-Locationofcontrols................11

Quick reference control operation . . . . . 11

Remote-Locationofcontrols.............12

Auto diagnosis feature. . . . . . . . . . . . .......14

A-Boardcheckpoints ...................15

A-Board check points waveforms. . . .......16

Chassis&boardslayout.................17

Boarddescription..................17

Disassemblyforservice .................18

Speakergrilleremoval..............18

Keyboardremoval.................18

Speakersreplacement..............18

Cabinet back lower cover removal . . .. 18

Cabinetbackcoverremoval.........18

Mirrorremoval....................18

Screenframeremoval..............19

Screenassembly..................19

Mainchassisblock ................19

Chassisassembly.................19

Disassembly for CRT replacement . . . . 20

CRTreplacement .................20

Optical block position adjustment . . . . . 21

PTVscreenassemblies.............22

B+voltagestable..................22

CRTsetup.............................23

Dynamicfocusadjustments..........23

Electricaladjustment...............23

Focus - Optical lens adjustment . . . . . .24

Opticaladjustments................24

NTSC Vertical size adjustment (VSIZE) 25 HD 1080i Vertical size

adjustment(VSIZE).............25

NTSC ZOOM Vertical size

adjustment(VSIZE).............26

NTSC Horizontal phase

adjustment(H-POS)............26

HD 1080i Horizontal phase adjustment

(H-POS) .....................26

Trapezoid adjustment (EWTRA) . . . . . . 26

NTSC Pincushion adjustment (PCC). . .26 HD 1080i Pincushion

adjustment(PCC)..............27

Centering magnets adjustment . . . . . . .27

NTSC Horizontal size

adjustment(HWID).............27

HD 1080i Horizontal size adjustment

(HWID)......................27

Convergenceadjustment............27

Coarse adjustmentmode (COARSE) . .29 Fine adjustment mode

(FINE)(convergence)...........30

Horizontal and vertical size check . . . . .33

Convergence alignment template . . . . . 33

Service mode (electronic controls). . . . . . . . . 34

Quickentrytoservicemode.........34

To toggle between aging

andservicemodes.............34

Exitingtheservicemode............34

Tocheckcolors...................34

Table of the service adjustments

items available for each format . . . . 35

480iServicemodeDACs ...........37

480pServicemodeDACs...........39

1080iServicemodeDACs ..........41

Instructional flow chart for format

aspect switching

(WX16:9orHX4:3)............43

Instructional flow chart for

servicemode..................44

NTSC Sub-Bright

adjustment(BRIGHT)...........46

1080i Sub-Bright

adjustment(BRIGHT)...........46

NTSC Color adjustment

(TINT,B-Y_G,R-Y_A) ..........46

1080i Color adjustment

(TINT,B-Y_G,R-Y_A) ..........46

Red, green & blue screen cutoff . . . . . .47

Whitebalanceadjustment...........47

Tintandcolorcheck ...............47

MTScircuitadjustments ............47

Inputleveladjustment(MTSIN).......47

Stereo separation adjustment

(SEPAL&SEPAH).............47

ClockAdjustment(CLOCK)..........48

Audiosignalpathblockdiagram ..........49

Video-chroma signal path block diagram . . . 50

IICconnection..........................51

Description of connectors. . . . ............52

Partslist ..............................53

Schematics........................66~103

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Service notes

Note: These components are affixed with glue. Be careful not to break or damage any foil under the

component or at the pins of the ICs when removing. Usually applying heat to the component for a short time while twisting with tweezers will break the component loose.

Leadless chip component (surface mount)

Chip components must be replaced with identical chips due to critical foil track spacing. There are no holes in the board to mount standard transistors or diodes. Some chip capacitor or resistor board solder pads may have holes through the board, however the hole diameter limits standard resistor replacement to 1/8 watt. Standard capacitor may also be limited for the same reason. It is recommended that identical components be used. Chip resistor have a three digi t numerical resistance code - 1st and 2nd significant digits and a multiplier. Example: 162 = 1600 or 1.6kΩ resistor, 0 = 0Ω (jumper). Chip capacitors generally do not have the value indicated on the capacitor. The color on the component indicates the general range of the capacitance. Chip transistors are identified by a two letter code. The first letter indicated the type and the second letter , the grade of transistor. Chip diodes have a two letter identification code as per the code chart and are a dual diode pack with either common anode or common cathode. Check the parts list for correct diode number.

Component removal

1. Use solder wick to remove solder from component end caps or terminal.

2. Without pulling up, carefully twist the component with tweezers to break the adhesive.

3. Do not reuse removed leadless or chip components since they are subject to stress fracture during removal.

Chip component installation

1. Put a small amount of solder on the board soldering pads.

2. Hold the chip component against the soldering pads with tweezers or with a miniature alligator clip and apply heat to the pad area with a 30 watts iron until solder flows. Do not apply heat for more than 3 seconds.

TYPE

Chip components

GRADE

SOLDER CAPS

How to replace Flat-IC

- Required tools -

• Soldering iron • De-solder braids

• Sharp pliers (wire cutters and long nose)

1. Cut the pins of the defective IC with the wire cutter pliers, and remove it completely away from the board. If the IC is glued to the board, apply hot air to complete the removal. CAUTION- Do not pull or twist the pliers, it may damage the soldering pads in the board .

Flat-IC

2. Using the soldering Iron and the long nose pliers, remove the IC pins that are still attached to the board.

3. Using the de-solder braid and the soldering Iron, remove the solder from the board soldering pads.

4. Position the new flat IC in place (apply the pins of the flat IC to the soldering pads where the pins need to be soldered). Properly determine the positions of the soldering pads and pins by correctly aligning the polarity symbol. Start aligning and soldering Pin No.1, then align and solder the pin in the apposite corner of the IC, this will help to align the rest of the pins.

Polarity symbol

• Magnifier

Soldering Iron

De-Solder Braid

Soldering Iron

ANODES

MH DIODE

TRANSISTOR

COMMON CATHODE

SOLDER CAPS

CAPACITOR

1ST DIGIT

RESISTOR

2ND DIGIT

MULTIPLIER =1600 = 1.6k

5. Solder all pins to the soldering pads using a fine tipped soldering iron.

Solder

Soldering Iron

6. Check with a magnifier for solder bridge between the pins or for dry joint between pins and soldering pads. To remove a solder bridge, use a de-solder braid as shown in the figure below.

De-Solder Braid

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Solder Bridge

Soldering Iron

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Service notes (continued)

IMPORTANT: To protect against possible damage to

the solid state devices due to arcing or static discharge, make certain that all ground wires and CRT DAG wire are securely connected.

CAUTION: The power supply circuit is above earth ground and the chassis cannot be polarized. Use an isolation transformer when servicing the PTV to avoid damage to the test equipment or to the chassis. Connect the test equipment to the proper ground (( )

or ( )) when servicing, or incorrect voltages will be measured.

WARNING: This PTV has been designed to meet or exceed applicable safety and x-ray radiation protection as specified by government agencies and independent testing laboratories.

To maintain original product safety design standards relative to X-ray radiation and shock and fire hazard,

parts indicated with the symbol on the schematic must be replaced with identical parts. Order parts from

the manufacturer’s parts center using the parts numbers listed in this service manual, or provide the chassis number and the part reference number.

For optimum performance and readability, all other parts should be replaced with components of identical specification.

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Feature table

FEATURE

Chassis P7W Number of channels 181 Menu language Eng/Span/Fr Closed caption (CC) X V-Chip (USA/CANADA) X Picture in Picture (PIP) 2T split VIDEO INPUT MEMORY/SKIP SKIP 2RF X Remote control number EUR7603Z30 EUR7603Z40 Screen protector W/PROT SCRN W/O PROT SCRN Comb filter ADV 3D Y/C (NEW) Color temp X NEW YNR X VM X (DIGITAL) V/A norm X DIGITAL SCAN RATE 1080i, 480p NTSC LINE-DOUBLER 480p SMOOTH PROGRESSIVE MTS/SAP/DBX X Bass/Bl/Trebcontrol X AI sound X SURROUND X Spatializer/BBE BBE Built-in audio power 15WX2 (10%) 10WX2 (10%) Number of speakers 4 2 A/V in (rear/front) 4 (3/1) S-VHS in (rear/front) 2/1 Audio out Fixed & Variable COMPONENT INPUT (Y, Pb, Pr) 2 Dimensions mm

WxDxH in Weight (kg/lbs) 82/180.78 Power source (V/Hz) 120V 60Hz Anode voltage 31.5kV ± 1.0kV Video input jack 1Vp-p 75Ω,phono jack Audio input jack 500mV RMS 47kΩ

PT-47WX52F

PT-47WX52CF

1111x1236x626

43.74x48.66x24.64

PT-47WX42F

PT-47WX42CF

Table 1: Feature Table

Specifications are subject to change without notice or obligation. Dimensions and weights are approximate.

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Boards designation

BOARD PART NUMBER BOARD DESCRIPTION

A-Board TNP2AH035 signal processing D-Board TNPH0371 power and deflection LB-Board TNP2AA110 blue driver LG-Board TNP2AA111 green driver LR-Board TNP2AA112 red driver G-Board TNP2AA090 front A/V panel K-Board TNP2AA089 front button panel R-Board TNPA0615AB IR receiver

Table 2: Boards designation

Note: The A-Board (

A-Board both tuners, IC2302, IC7001, IC7002, IC871, IC872, IC873. If any of these components or board is defective repleace it with a new one and takeback the defective board tothe service center.

Notice: When ordering any board, add and ” S” after the board

Example: If Order D-Board, should be ordered as:

TNP2AH035

suffix application.

) is non-serviceable.Exceptfor

TNPH0371

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PTV - Location of controls

POWER VOLUME CHANNEL ACTION TV/VIDEO

1 2 4 53

Figure 5. Location of controls PTV

Quick reference control operation

Power - Press to turn ON or OFF.

Volume - Press to adjust sound level, or to adjust audio menus, video menus, and

select operating features when menus are displayed Channel - Press to select programmed channels. Press to highlight desired features

when menus are displayed. Also use to select cable converter box channels after programming remote control infra-red codes (the TV/AUX/CABLE switch must be set in CABLE position).

Action - Press to display main menu and access on screen feature and adjustment

menus.

TV/Video - Press to select TV or one of the video inputs, for the main picture or thePIP

frame (when PIP frame is displayed).

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Remote - location of controls

POWER Button Press to turn ON and OFF. MUTE Button Press to mute sound.

A second press resumes sound. Press also to access and delete Closed Caption display.

TV, VCR, DVD, CBS/CBL Component function buttons VOL (volume) Buttons Press to adjust TV sound level.

Use with Channel buttons to navigate in menus.

R-TUNE (Rapid Tune) Button. Press to switch to theprevious

channel. ACTION Button Press to displaymain menu andaccess or

exit on screen features and adjustment menus.

REW, PLAY, FF, TV/VCR, STOP, PAUSE, REC & VCR CHANNEL Buttons

Component function buttons. DBS EXIT& DBS GUIDE Buttons DBS function buttons. LIGHT Button Press to light remote control buttons. SAP Access second audio program ASPECT Select picture size (ratio) to match

programming format MOVE, PIP, SPLIT/SIZE, FREEZE, SWAP,

SEARCH, PIP CHANNEL PIP function buttons

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Figure 6. Location of controls (EUR7603Z30 remote)

For additional information for this remote please refer to the owner’s manual section remote operation, listed on the parts list.

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Remote-locationofcontrols

POWER button Press to turn ON and OFF. MUTE button Press to mute sound.

A second press resumes sound. Press also to access and delete Closed Caption display.

TV, VCR, DVD, CBS/CBL Component function buttons VOL (volume) buttons Press to adjust TV sound level.

Use with channel buttons to navigate in menus.

R-TUNE (rapid tune) button. Press to switch to theprevious

channel. ACTION button Press to displayMain Menu andaccess or

exit On Screen features and Adjustment Menus.

REW, PLAY, FF, TV/VCR, STOP, PAUSE, REC & VCR CHANNEL buttons

Component function buttons. DBS EXIT& DBS GUIDE buttons DBS function buttons. LIGHT button Press to light remote control buttons. SAP Access second audio program ASPECT Select picture size (ratio) to match

programming format MOVE, PIP, SPLIT/SIZE, FREEZE, SWAP,

SEARCH, PIP CHANNEL PIP function buttons

Figure 7. Location of controls (EUR7613Z40 remote)

For additional information for this remote please refer to the

owner’s manual section remote operation, listed on the parts list.

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Auto diagnosis feature

This receiver incorporates a new auto-diagnosis feature. With this new feature will be easier for the technicial to detect the failures. There is a LED located by the keyboard on the front panel, this LED will start flashing when a failure is detected by the circuits located in specific areas, depending on how many times the LED is flashing, this will tell you what circuit should be checked. Make a count of flashing and see Table 3. Please use this feature effectively especially for intermittent problems.

NUMBER OF

FLASHES

1 +140 2LOWDC 3 CONVEREGENCE 4 HHS 5 IC4011 6IC4018

Table 3: SOS of front LED

After the count:

Proceed to check that area, verify what board is the problem located, this way the area to check will be reduced until the failure is found.

POSSIBLE CIRCUIT

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A-Board check points

-0.26V

-0.14V

0.00V

-0.47V

-0.53V

STB 3.3V

3.27V

-0.46V

CONV -18

-0.26V

CONV +18

-0.46V

8.96V

2.5V

2.58V

9.47V

3.6V

3.58V

3.45V

3.11V

3.17V

3.19V

0.00V

0.24V

STB 7V

6.96V

NTSC VIDEO

3.52V

SUB TUNER

VIDEO OUTPUT

2.13V

MAIN TUNER

VIDEO OUTPUT

2.25V

DTV1-Y

5.24V

MAIN-Y

3.77V

S-L

4.46V

SUB-Y

3.83V

S-R

4.46V

S+18

20.97V

S-18

-23.77V

S-R

0.00V

Figure 8. A-Board check points

Note: All the measurments are in DC with a digital multimeter, color bar

pattern, picture settings normalized and sound set to minimum.

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A-Board check points waveforms

Main tuner video output

15.72 kHz, 1 Vpp, 10µssec/div

Sub Y

15.72kHz, 1.92Vpp, 10µssec/div

31.65kHz, 3.32Vpp, 10µssec/div

Sub tuner video output

15.72kHz, 1.00Vpp, 10µssec/div

NTSC video

15.72kHz, 2.02Vpp, 10µssec/div

Conv -18

60.24Hz, 0.75Vpp, 5µssec/div

Main Y

15.72kHz, 1.00Vpp 10µssec/div

VP 60Hz, 3.36Vpp, 5µssec/div

Conv +18

60.24Hz, 0.24Vpp, 5µssec/div

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31.65kHz, 4.72Vpp, 10µssec/div

Figure 9. A-Board check points waveforms.

Note: Waveforms were obtained with colorbar pattern,

picture settings normalized and sound set to minimum.

31.65kHz, 4.44Vpp, 10µssec/div

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31.65kHz, 4.40Vpp, 10µssec/div

Chassis & boards layout

Top view

Back view

Figure 10. Chassis & boards layout.

Board description

A Main chassis, video processing, convergence,

audio processing

D Power supply, vertical out, horizontal out

LB Blue CRT output LG Green CRT output LR Red CRT output RIRsensor

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Disassembly for service

Note:

Speaker grille removal (figure 11)

The speaker grille is secured to the cabinet of the PTV. grip panel from the sides and middle upper part, gently pull forward to remove. When reassembling, make certain to firmly press on the panel where the insertion points (5) are located, one at each corner and one at the middle top edge.

Board ground wires may have to be disconnected to disassemble some boards. All ground wires must be reconnected using jumper leads, if necessary, before power is applied to PTV for service.

Figure 11. Speaker grille removal.

Keyboard removal

1. Remove the speaker grille. See figure 11.

2. Unplug the connectors from the Keyboard and front A/V inputs assemblies. Remove the screws affixing the keyboard to the frame assembly. Tilt the keyboard assembly upward and release it from the screen frame assembly.

Speakers replacement

1. Remove the speaker grille. See figure 11.

2. Each speaker is secured to the cabinet with (4) screws.

3. Disconnect the R & L speaker lead connectors from the speaker units.

Cabinet back lower cover removal (figure 12)

1. Remove (7) hex screws around the perimeter, marked with arrows. See figure 12 for screws location.

2. Remove (3) screws from around the A/V terminal board (marked with arrows).

Screw count:

14 fasten the top back cover; 10 fasten the lower back cover

Figure 12. Lower cabinet back removal

Cabinet back cover removal (figure 12)

1. Remove the cabinet back lower cover. (Detailed previously).

2. The top back cover (plastic shell) is secured with (14) screws around its perimeter. See figure 12 for screws location.

3. Be careful not to damage the mirror secured to the underside of the back cover.

Mirror removal (figure 13)

The mirror is attached inside the cabinet cover. Carefully remove the cabinet cover to access its interior surface and remove the screws securing the brackets that hold the mirror at the top and sides to the mirror. See figure 13.

Screws (12 places)

Brackets (4 places)

Felt

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Bracket

(2 places)

Mirror

Felt

cabinet cover

(Inside view)

Figure 13. Mirror removal

Disassembly for service (continued)

Screen frame removal

1. Remove the speaker grille. Disconnect the cables leading to the keyboard and the AV panels and remove the keyboard and AV panel assembly. The assembly is secured by three (3) screws.

2. At this point the front cover is held only by four screws, be careful not to push the cabinet forward.

3. Remove screws and tilt the assembly forwardwhile lifting it out of place.

Screen assembly (figure 14)

1. Remove the screen frame. See screen frame removal procedure above.

2. Place screen frame face down on a soft surface.

3. Remove all screen brackets and corner brackets

Note: The brackets are painted black (permanent

marker) on the edge to prevent reflection on image.

Main Chassis Block

Figure 15. Chassis removal

Note: Main chassis block can be serviced either

in normal position or layi ng on its b ack (protect hookup terminal from damage).

Bracket

0 ± 0.5mm

Felt

Screws (18 places)

Lenticular screen

Fresnel screen

Fresnel

screen

Double

adhesive tape

Protective screen

Figure 14. Screen assembly

4. Note exact orientation and order of each screen. The orientation and order of the screens is critical for displaying pictures properly. Detailed screen assembly can be seen in figure 14.

Main chassis block (figure 15)

1. Remove the speaker grille. See figure 11.

2. Remove the cabinet back lower cover. See figure 12.

3. The main chassis block is secured to the cabinet by screws at front, behind the Speaker Grill and inside on the bottom of the optical frame).

4. Remove the horizontal barrier panel at the back of the cabinet.

5. Unplug connectors (K1, G1 and speaker connectors) and pull out the main chassis block.

Chassis assembly

The chassis assembly shown in figure 18 includes all the electrical and optical (light box) components.

Figure 16. Chassis rear view

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Disassembly for service (continued)

Disassembly for CRT replacement

To facilitate CRT replacement, the complete CRT mounting chassis does not need to be removed.

1. Remove the main chassis block from the cabinet. See figure 15.

2. Remove the optical bracket metal cover (rear side) by removing (6) screws from back, (2) screws from top, and (2) screws from each side. See figure 17 & figure 18.

REAR VIEW

Screws (6) places

Optical bracket

Pull down

Figure 17. CRT replacement

Optical bracket cover

Figure 19. CRT replacement.

** CAUTION: Support the CRT assembly

when loosening screws.

8. Release CRT anode lead from CRT chassis wire clamp and all other wires from holders.

9. Loosen a screw that secures the DY and remove it from the CRT neck.

Caution: To insure x-ray radiation protection, the lens

must be mounted in place at all times when power is applied to the PTV.

CRT replacement

1. Remove CRT focus lens assembly (4 screws).

Lens (4) Screws

Focus pack

Figure 18. Light box front view

3. Remove the defective CRT anode lead from the high voltage distributor block that is mounted on the flyback transformer. Discharge to CRT chassis.

4. Unplug connectors from the B-Board. See board layout. B9 for red, B10 for green, or B11 for blue.

5. Unplug the defective CRT black DAG ground connector from the CRT Board.

6. Remove the CRT Board from the defective CRT neck.

7. Remove (2) screws from the defective CRT housing. See figure 19.**

CAUTION: Do not remove the (4) CRT

lens screws.

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Figure 20. CRT assembly.

2. Lay CRT face down on a soft cloth.

3. Note position of yoke with centering tabs and remove from defective CRT.

4. Remove CRT DAG ground from defective CRT. Mount it on the replacement CRT exactly as it was on the defective CRT.

Note: Replacement CRT is supplied with H.V. anode

lead attached.

5. Wire the anode lead wire.

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6. Wire the anode lead wire.

Optical bracket (front)

8. Press yoke against bell of CRT and tighten the clamp just snug enough so it will not easily shift.

9. Assemble CRT focus lens assembly to new CRT with (4) screws. Make sure focus lens adjustment nut is in the same location as on other CRT focus lens.

RED CRT GREEN CRT BLUE CRT

Figure 21. Wire guide.

7. Install yoke with other CRT neck assemblies on CRT neck in the same order and position as removed from the defective CRT.

Optical block position adjustment

Figure 22. CRT screw tightening order .

Note: Please assemble with screws in the order

shown and tighten with the same torque.

Figure 23. Optical block position.

The optical block mounting has holes to allow for the different size projection screens. These mounts will adjust to projection screens.

51/61

If the optical block is removed for service or is replaced, it is important that the correct mounting holes are used.

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ServiceManual

PTV screen assemblies

Label on lower left corner (front side)

Labels on opposite sides

Label on lower left corner (rear side)

REAR

Protective screen

FRONT

Front cabinet

Lenticular screen

(note vertical ridges)

Fresnel screen

(note circular ridges)

Figure 24. Screen assemblies.

B+ voltages table

Preparation:

Set the following controls

Picture..........................Normal.

Bright ...........................Normal.

Volume......................... Min. (0).

Procedure:

1. Apply a white NTSC pattern.

2. Connect the (-) lead of the digital voltmeter to TPGND1 (cold ground).

3. Connect the (+) lead of the digital voltmeter to each test point and confirm the B+ voltages (see Table 4).

No. Test point (D-Board) Voltage

1 TPD14 138.6±1.0 2 TPD13 19.0 3 TPD12 19.0±1.5 4TPD11 -19.0 5 TPD10 22.0±1.5 6 C845 (-) -22.5

No. Test point (A-Board) Voltage

1TPA031 9.0±0.5 2 TPA030 5.0±0.5

Table 4: B+ voltages table

±1.5

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CRT set up

CAUTION: Insure yoke plugs on the A-Board

are reconnected before turning the PTV ON to prevent damage to the horizontal output transistor and/or CRTs.

1. Connect test generator to the antenna terminal and set for a monoscope pattern.

2. Loosen yoke clamp, seat yoke against bell of CRT and rotate to correct yoke tilt (compare to adjacent CRT). Tighten yoke clamp.

3. Remove adhesive from centering tabs and set centering t abs for zero correction. (figure 25)

Centering magnets

Figure 25. Adhesive removal

4. Cover replacement CRT lens and static converge the tubes not replaced, if needed. Check size and linearity of pattern and adjust as required.

5. Uncover replacement CRT lens and cover other two CRT lenses. Adjust electrical and optical focus (lens), if required.

6. Uncover all CRT lenses and use yoke centering magnet to converge replacement CRT (in center area of screen only) with other two CRTs. Disregard non-convergence in areas other than center area.

7. Perform white balance adjustments.

Dynamic focus adjustments

1. Focus adjustments should be performed after 1 hour of aging.

2. Use oscilloscope with 100 : 1 probe.

3. Apply a NTSC crosshatch pattern to adjust focus.

4. Adjust the red, blue and green focus VR on the focus block for best focus of overall picture of each CRT. (figure 28)

Adhesive

16.7ms (V Rate)

Procedure:

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

1. Enter to service mode and set the following default DATA:

NTSC NTSC ZOOM 1125i

H-PARA +317 +263 +317

V-SAW -23 -35 -23

V-PARA +69 +117 +69

Note: The signal (NTSC, 1125i) (NTSC ZOOM

option), should be displayed to enter values for specific format adjustment.

2. For 1125i (1080i) set the default values.

3. For NTSC and NTSC ZOOM apply a white pattern and perform the following steps.

4. Connect the scope probe to TPD30, GND to TPD31.

5. Confirm that level of A is 600_V ± 100_V, adjust H-PAR DAC to set to specification level.

6. Confirm that level of B is 280_V ± 50_V, adjust V-PAR DAC to set to specification level.

7. Confirm that level of C is more tha 20 V, adjust H-PAR DAC to set to specification level.

Focus - Electrical & optical adjustments

(use for minor adjustment or for final adjustment, for complete adjustment see following section.)

Electrical adjustment

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

1. Apply a NTSC crosshatch with dots pattern.

Panasonic

FORMAT

280_V ± 100_V

>20_V

600_V ± 100_V

GND

Figure 26. D. Focus adjustment waveform

5. To change DAF DA TA, enter to service mode, then press POWER on remote to display DACs menu, then select DAC by pressing CH (RIGHT/LEFT) and VOL (UP/DOWN), then press ACTION to enter to DAC, then adjust by pressing VOL (RIGHT/ LEFT); press ACTION, to save press ACTION again or OTHER to exit without saving.

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Adjust electric focus VR

and lens focus on this circle

Figure 27. Lens focus adjustment

Table 5: Focus points

RED GREEN BLUE

Electric focus B A/B A Optical Focus B A/B A

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2. Set VIDEO C_OFF DAC from 00 to 02, and project only red. Adjust red focus VR so that focus is best..

screen

focus

Figure 28. Focus pack

3. Adjust red lens focus (mechanical) until focus is best.

4. Adjust red focus VR again.

5. Set VIDEO C_OFF DAC from 00 to 01, and project only green.

6. Repeat steps for green only.

7. Set VIDEO C_OFF DAC from 00 to 03, and project only blue.

8. Repeat steps for blue only.

Focus - Optical lens adjustment Optical adjustments

Note: This adjustment normally should not require

resetting unless the lens has been replaced or adjustment has changed.

Electric & VM focus adjustment, complete adjustment

(Perform this adjustment when a CRT is replaced or when major adjustment is required)

Preparation:

1. Apply a NTSC crosshatch pattern with dots.

2. Set CONV “MUTE” DAC from 0 to 1 (disabling digital convergence.)

3. Position the longer tab of the four-pole magnet to 90 degrees (uncorrected position). (see figure 31).

6-pole magnet (Dummy ring)

4-pole magnet Alignment magnet

Figure 30. VM coil with focus

correction magnet

Set 90 deg rees

1. Optical focus adjustment is located on the top of each CRT lens system. Loosen the adjustment knurled locking knob. (figure 29)

Adjustment knurled

locking knobs

BGR

REAR VIEW

Figure 29. Optical lens focus adjustment

2. Turn the PTV ON. Apply and view a crosshatch with dots pattern.

3. Adjust each lens focus for best focus while viewing each CRT .

4. Cover the red and blue CRT, projecting green only. Rotate the green lens for best focus around screen center area.

5. Do the same for the red focus lens while projecting red only.

6. Repeat for blue.

Figure 31. 4-pole magnet

4. Position the long tab of all alignment magnets and of the dummy ring together in an uncorrected position. (See figure 32).

Figure 32. Alignment magnet

(or dummy ring)

Procedure:

1. Apply an NTSC cross hatch pattern with dots.

2. Assure that digital convergence is disabled (DAC MUTE from 0 to 1).

3. Set VIDEO “C_OFF” DAC from 00 to 02, to project red only.

4. Turn the red electrical focus adjustment VR (on focus pack) fully counterclockwise and note the position of the dots at the center of the picture.

5. Turn the red electrical focus adjustment VR fully clockwise.

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6. If the position of the dotsat the center of the screen moves from the position noted in step 4., adjust the alignment magnets until the dots are in the same position as noted in step 4.

7. Turn the red electrical focus adjustment VR (on focus pack) fully counterclockwise and confirm that the position of the dots at the center of the screen did not move from their position noted in step 4.

8. If the position of the dots at the center of screen moved, repeat from step 4.

9. If the position of the dots moved after repeated adjustments, adjust until the movement of the dots is minimized.

10. Turn the red focus VR fully clockwise.

11. Adjust t he 4-pole magnets until the shape of the dots at the center of the screen is circular .

12. Adjust red focus VR until optimum focus is achieved.

13. Apply NTSC crosshatch with dots or any other available pattern applicable to the following.

14. Confirm that the picture is correctly aligned in the center of the screen, shown in figure 33, adjust the centering magnets. Repeat the alignment magnet adjustments and four pole magnet adjustments (step 1. ~ step 12.).

NTSC Vertical size adjustment (VSIZE)

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

1. Apply a NTSC pattern (see avobe note) .

2. Set VIDEO “C_OFF” DAC from 00 to 01 (to project only green).

3. Adjust centering magnets so that the center of the pattern get aligned with screen frame center.

4. Adjust VDEF “VSIZE” DAC until vertical size is proportional on top and bottom. (See figure 34)

5. Set VIDEO “C_OFF” DAC from 01 to 00

Panasonic

FORMAT

Figure 34. Vertical size adjustment

HD 1080i Vertical size adjustment (VSIZE)

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

1. Apply a HD 1080i pattern (see avobe note).

2. Repeat vertical size adjustment from step 2

Figure 33. Centering magnet

15. Apply an NTSC cross hatch pattern with dots.

16. Set VIDEO “C_OFF” DAC from 00 to 01, to project green only .

17. Repeat above procedures for the green.

18. Set VIDEO “C_OFF” DAC from 00 to 02, to project red only.

19. Repeat above procedures for the blue.

20. Enable digital convergence by changing DAC MUTE from 01 to 00.

21. Following adjustments, paint position of DY centering magnets and fix the centering magnets of DY, dummy rings of VM coil, four pole magnets of VM coil and the alignment magnets of VM coil to prevent them from moving.

Note: Please See “Service mode (electronic

controls)” on page 34 for entering and exiting service mode.

Panasonic

FORMAT

Figure 35. Vertical size adjustment

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NTSC ZOOM Vertical size adjustment (VSIZE)

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

1. Apply a NTSC pattern (see avobe note) .

2. Change aspect to ZOOM mode.

3. Repeat vertical size adjustment from step 2

4. Try making circle seem rounded (in proportion)

Panasonic

FORMAT

HD 1080i Horizontal phase adjustment (H-POS)

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

1. Apply a HD 1080i pattern.

2. Repeat NTSC horizontal phase adjustment from step 2.

Panasonic

FORMAT

Figure 38. H Phase adjustment

Figure 36. Vertical size adjustment

NTSC Horizontal phase adjustment (H-POS)

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

1. Apply a NTSC crosshatch pattern with dots.

2. Set CONV “MUTE” DAC from 00 to 01 (disabling digital convergence).

3. Set VIDEO “C_OFF” DAC from 00 to 01 to project only green.

4. Turn green deflection yoke until line is perfectly horizontal.

5. Adjust H-POS DAC data so that pattern is in the center of screen.

Figure 37. H phase adjustment

Trapezoid adjustment (EWTRA)

1. Set default value

NTSC Pincushion adjustment (PCC)

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

Procedure:

1. Apply a NTSC crosshatch pattern with dots.

2. Set VIDEO “C_OFF” DAC from 00 to 01 to project only green.

3. Set DAC MUTE from 00 to 01 (disabling digital convergence).

4. If the distance at “A” is not 10 ± 5mm, enter “H DEF” “H WID” mode and adjust by VOLUME UP/ DOWN until it is 10 ± 5mm. See figure 39.

A=10±5mm

Line with dot

6. Enable digital convergence by changing DAC MUTE from 01 to 00.

7. Set VIDEO “C_OFF” DAC from 01 to 00.

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Figure 39. Pincushion adjustment

NOT GOOD GOOD NOT GOOD

5. If not all corners of cross hatch appear in screen, enter V DEF “V SIZE” mode and adjust until they

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appear.

6. Confirm that measurement of “A” has not changed.

7. Enable digital convergence by changing DAC MUTE from 01 to 00.

8. Set VIDEO “C_OFF” DAC from 01 to 00.

HD 1080i Pincushion adjustment (PCC)

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

Procedure:

1. Apply a HD 1080i pattern.

2. Repeat NTSC pincushion adjustment from step 2

Centering magnets adjustment

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

Procedures:

1. Apply a NTSC crosshatch pattern with dots.

2. Set VIDEO “C_OFF” DAC from 00 to 01 to project only green.

3. Set DAC MUTE from 00 to 01 (disabling digital convergence).

4. Loosen the deflection coil screw on the green CRT.

5. Adjust green deflection coil until the horizontal center line is horizontal.

6. Adjust centering magnets until the green pattern is equal on left and right. Adjust also for horizontal and vertical tilt.

Note: Push deflection coil to top of CRT neck,

then tighten deflection screw after adjusting each CRT centering and tilt.

7. Set VIDEO “C_OFF” DAC from 01 to 03 to project only blue. Adjust deflection coil until the horizontal center line matches the pattern of the grid and is leveled.

8. Adjust blue centering magnets until the pattern center is at the appropriate distance as indicated on figure 40.

12. Enable digital convergence by changing DAC MUTE from 01 to 00.

13. Set VIDEO “C_OFF” DAC from 02 to 00. Following the adjustment, make sure that all deflection coils are pushed completely toward the CRT cones and that all screws are tightened.

NTSC Horizontal size adjustment (H WID)

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

This adjustment is intended to adjust horizontal size of the picture.

1. Apply a NTSC pattern.

2. Set VIDEO “C_OFF” DAC from 00 to 01 to project only green.

3. Set DAC MUTE from 00 to 01 (disabling digital convergence).

4. In service mode, adjust H-WID DAC until the picture horizontal size is balanced at left and right side of screen.

5. Set DAC MUTE from 01 to 00 (disabling digital convergence).

6. Set VIDEO “C_OFF” DAC from 01 to 00.

HD 1080i Horizontal size adjustment (H WID)

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

This adjustment is intended to adjust horizontal size of the picture.

1. Apply a HD 1080i pattern.

2. Repeat NTSC horizontal size adjustment from step 2.

Convergence adjustment

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

Note: It is strongly recommended to first read and

understand the following section prior to make any adjustment. Convergence adjustment must be perform for 480i-p (same for interlace & progressive), 1080i and ZOOM 480i.

dmeasuredinmm

28 mm

Figure 40. Centering magnets adjustment.

9. Set VIDEO “C_OFF” DAC from 01 to 02 to project only red.

10. Adjust red deflection coil until the horizontal center line matches the pattern of the grid and is leveled.

11. Adjust red centering magnets until the pattern center is at the appropriate distance as indicated on figure 40.

TurnPTVonandallowittowarmupfor30 minutes prior to making adjustments (WHITE PATTERN).

Note:

Preparation:

Place the convergence alignment template (see “Convergence alignment template” on page 33) over the PTV screen. Align the center lines of the template with the mechanical center markerson the PTV screen

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This PTV uses the scheme described below to correct for misconvergence of the three CRT projection tubes. There are various modes to this operation.

ServiceManual

frame. If the template is not available, create one using the dimensions provided in “Convergence alignment template” on page 33. Remote control must be used during the procedure.

Note: Apply the convergence alignment template to

the PTV screen frame to converge the green raster only. Remove the convergence alignment template following this alignment. The red and blue rasters can then be aligned to the green raster.

Raster Setup:

1. Enter to service mode (red CHK).

2. In SET-UP (roller guide menu) CONVERGENCE 1 set all values to 0.

3. Cover red & blue lens with caps.

4. Apply a pattern to adjust specific format:

• NTSC signal to adjust 480i-p (same for

interlace and progressive)

• 1080i signal to adjust 1080i

• 480i signal with PTV in ZOOM aspect to

adjust Z480i

5. Select DAC COARSE, then press ACTION to enter to “CONVERGENCE ADJ” mode.

6. Press “0” key on remote.

7. Press ACTION key on remote to enter to “TEST_POS” mode.

8. Move pattern by pressing VOL right - left and CH up - down so that the cursor center overlap monoscope pattern center.

Figure 41. Aligning cross-hair

cursor with center of pattern

9. Press “5” key on remote to exit superimpose mode (monoscope pattern disappear).

10. Press “TV/VIDEO” key to enter “DATA_POS” mode

11. Adjust by pressing VOL right - left so that peak of curve is the same position as center of cursor.

13. Press “5” key on remote so that monoscope pattern appears (superimpose mode)

14. Move cursor by pressing VOL right - left and CH up - down so that cursor center overlap monoscope pattern center

15. Press “0” key to go back to “CONVERGENCE ADJ” mode.

16. Press “TV/VIDEO” key to cycle through “COARSE ADJ. MODE” options.

Static Size Skew Linear

KeyPinCorner

Figure 43. Coarse modes cycle

17.Tochangeto“FINEADJUSTMENTMODE” options (DAC FINE), press “TV/VIDEO” key on remote for at least 3 seconds, to go back to “COARSE ADJ MODE” options press “TV/VIDEO” on remote again for 3 seconds.

18. In “FINE ADJUSTMENT MODE” options, press “MUTE” key on remote to switch between “cursor” mode and “data” mode.

• Cursor mode: Allows cursor movement by

pressing VOL right - left and CH up - down.

• Data mode: Allows making adjustment by

pressing VOL right - left and CH up - down.

19. Either “COARSE ADJUSTMENT MODE” options or “FINE ADJUSTMENT MODE” options, press “RTUNE” repeatedly key on remote to cycle through different color adjustments (R, G , B, White)

20. To store adjustments press “7”, then “ACTION” key on remote, otherwise press “POWER” then “ACTION” to exit adjustments without saving.

21. Remote functions:

• 1,3.......... changecolorviewadj

• 2..................changepattern

• 7.......................savedata

• 5.........................overlap

• POWER....................toexit

• RECALL ............displayvalues

• R-TUNE...............cycle colors

• TV/VIDEO ............changemode

3secs.......changeoptions

Coarse adjustment mode (COARSE)

Note: 1080i, 480p, 480i pattern can be obtained from

Panasonic’s TU-DST51 set-top box DTV decoder.

Figure 42. Symmetrical shape

12. Press “TV/VIDEO” key on remote to enter “OSD_POS” mode.

ServiceManual

Note: It is strongly recommended to first read and

understand the following section prior to make any adjustment. Convergence adjustment must be perform for 480i-p (same for interlace & progressive), 1080i and ZOOM 480i.

Procedure:

1. Enter to “G-SIZE” mode:

• DAC COARSE

• Press ACTION on remote

• TV/VIDEO (repeatedly)

• R-TUNE (repeatedly)

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2. Press “2” repeatedly and apply the pattern of border and cross.

3. Press RECALL to display values

4. Adjust size so that the line of the border closes to the screen frame at top, bottom, left and right by pressing CH up-down and VOL right-left.

Figure 44. H&Vsizeadjustment

5. Press “7” then “ACTION” key on remote to save changes.

6. Enter to linearity “G-LINEAR” mode by pressing “TV/VIDEO”.

7. Adjust linearity by pressing VOL right-left until A=B (see figure 45)

12. Press “7” then “ACTION” key on remote to save changes.

Figure 46. H&VPINadjustment

13. Enter to CORNER “G-CORNER” mode by pressing TV/VIDEO.

14. Adjust by pressing VOL right-left (see figure 47).

15. Press “7” then “ACTION” key on remote to save changes.

Figure 45. Linear mode adjustment

8. Press “7” then “ACTION” key on remote to save changes.

9. Enter to PIN “G-PIN” mode by pressing “TV/ VIDEO”.

10. Adjust V_PIN by pressing CH up-down (see figure 46).

11. Adjust H_PIN by pressing VOL right-left.

Figure 47. Corner adjustment

16.EntertoKEY“G-KEY”modebypressingTV/ VIDEO.

17. Adjust by pressing CH up-down (see figure 48)

18. Press “7” then “ACTION” key on remote to save changes

Figure 48. KEY mode adjustment

Note: Confirm that pattern looks like a square and

almost overlaps the screen frame, check that vertical and horizontal line center match with the marks on screen frame, if linearity is not good enough, repeat adjustments.

19. Enter to “STATIC” mode by pressing TV/VIDEO.

20. Press “1” or “3” repeatedly until green and red only are shown.

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21. Adjust “R-STATIC” so that the center of red overlaps with the center of green.

38. Adjust B-STATIC so that the center of blue overlaps with the center of green (see figure 51).

red

Figure 49. STATIC mode adjustment

22. Enter to SKEW “R-SKEW” mode by pressing TV/ VIDEO

23. Adjust “R-SKEW” so that the vertical and horizontal line of center overlaps with green (see figure 50)

24. Press “7” then “ACTION” key on remote to save changes.

Figure 50. SKEW adjustment

green

Note: Remember always save data following each

adjustment by pressing “7” key on remote, then ACTION.

25. Enter to LINEARITY “R-LINEAR” mode by pressing TV/VIDEO.

26. Adjust Horizontal linearity (see figure 45)

27. Enter to SIZE “R-SIZE” mode by pressing TV/ VIDEO

28. Adjust so that the line on the border closes to the screen frame at top, bottom, left and right (see figure 44)

29. Enter to PIN “R-PIN” mode by pressing TV/VIDEO

30. Adjust horizontally and vertically (see figure 46)

31. Enter to CORNER “R-CORNER” mode by pressing TV/VIDEO.

32. Adjust corners (see figure 47)

33. Enter to KEY “R-KEY” mode by pressing TV/ VIDEO

34. Adjust KEY (see figure 48)

35. Display pattern of border and cross, then check that red overlaps green pattern, if it is not satisfactory, repeat from step 19.

36. Enter to STATIC “B-STATIC” mode.

37. Press “1 or 3” key repeatedly on remote until only green and blue pattern are displayed

blue

Figure 51. B-STATIC adjustment

39. Perform all adjustments for blue (B-SKEW, BLINEAR, B-SIZE, B-PIN, B-CORNER, B-KEY)

40. Display border and cross pattern and confirm that blue overlaps with green pattern, if it is not satisfactory, repeat for blue.

41. Press “1 or 3” key repeatedly on remote until green, red and blue (white), confirm that red and blue overlaps with green pattern.

42. Press “7” key on remote, then ACTION to save changes.

43. Press POWER then ACTION to exit adjustments or press TV/VIDEO for at least 3 seconds to change to Fine Adjustment Mode.

green

Fine adjustment mode (FINE) (convergence)

Note: It is strongly recommended to first read and

understand the following section prior to make any adjustment. Convergence adjustment must be perform for 480i-p (same for interlace & progressive), 1080i and ZOOM 480i.

Helpful hint:

The easiest way to adjust convergence is to begin from the center of the screen, to the border in all the convergence adjustments.

Remote functions:

• 1,3............changecolorviewadj

• 2................... changepattern

• 7........................savedata

• 5......................... overlap

• POWER.....................toexit

• RECALL..............displayvalues

• R-TUNE................cyclecolors

• TV/VIDEO............ changemode

3 secs . . . . . . . . change options

• MUTE (“fine”). . . . . .cursor & data mode

About pattern:

• NTSC to adjust 480ip (same for interlace and

progressive)

• 1080i to adjust 1080i

• 480i with ptv in zoom aspect to adjust

Z480i

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+ 74 hidden pages