Panasonic l PT-47WX49E, PT-47WX51E, PT-47WX51CE Service Manual

Service Manual

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ORDER NO. MTNC010522A1

HDTV MONITOR

l PT-47WX49E

PT-47WX51E PT-47WX51CE

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http://servis-manual.com/

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.

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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ServiceManual

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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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 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

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 DATA, 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 theposition 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 the 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.

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