Panasonic CT-36SX31E, CT-36SX31CE, CT-32SX31E Initial Center Static Convergence, Purity Adjustment

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Initial Center Static Convergence

Connect a dot/cross hatch generator to the Receiver and tune in a signal. Observe misconvergence at center of the screen only.

Adjust the R&B pole magnets; by separating tabs and rotating to converge blue with red.

Adjust the R&B and R&B&G pole magnets: by separating tabs and rotating to converge blue and red (magenta) with green.

Note: Precise convergence at this point is not important.

Purity Adjustment

When the Receiver is in the Serviceman Mode for making electronic adjustments, press the Recall button on the Remote Control to enter Purity Check. (See the

Service Adjustments Electronic Controls procedure).

Operate the Receiver for 60 minutes using the first Purity Check field (white screen) to stabilize the CRT. Fully degauss the Receiver by using an external degaussing coil.

Press the Recall button on the Remote Control again until the Purity Check (green screen) appears.

Loosen the deflection yoke clamp screw and move the deflection yoke back as close to the purity magnet as possible.

Adjust the Purity rings to set the vertical green raster precisely at the center of the screen (see Fig .12).

NOTES:

1.CRT warm up with white screen (three guns activated) is needed to stabilize the shadow mask expansion.

2.Initial center static convergence (roughly centers three gun beams) is required in order to perform purity adjustment.

Figure 12. Green Raster Adjustment Green Raster

Slowly move the deflection yoke forward until the best overall green screen is displayed.

Tighten the deflection yoke clamp screw.

Press the Recall button on the Remote Control again until the purity check blue and red screens appear and observe that good purity is obtained on each respective field.

Press the Recall button on the Remote Control again until Purity check (white screen) appears. Observe the screen for uniform white. If purity has not been achieved, repeat the above procedure.

Final Convergence Procedure (see Fig. 17

through Fig. 19):

Note: Vertical size and focus adjustments must be completed prior to performing the convergence adjustment. Connect a dot pattern generator to the Receiver. The Brightness level should not be higher than necessary to obtain a clear pattern.

Converge the red and the blue dots at the center of the screen by rotating the R&B pole Static Convergence Magnets.

Align The converged red/blue dots with the green dots at the center of the screen by rotating the R&B&G pole Static Convergence Magnets. Melt wax with soldering iron to reseal the magnets.

Slightly tilt vertically and horizontally (do not rotate) the deflection yoke to obtain a good overall convergence. If convergence is not reached at the edges, insert permalloy (see following section) from the DY corners to achieve proper convergence. Recheck for purity and readjust if necessary.

After vertical adjustment of the yoke, insert wedge at 11 o’clock position, then make the horizontal tilt adjustment.

Secure the deflection yoke by inserting two side wedges at 3 and 7 o’clock positions.

Apply adhesive between tab (thin portion) of wedge and CRT and place tape over the tab to secure to the CRT.

Dynamic Corvergence Adjustment

Use this for a precisely overall convergence adjust at the edges.

DY(YHC, YV, XV) Adjustment

YV Adjustment (VR1 for Horizontal dynamic convergence)

1.Apply a crosshatch pattern.

2.Adjust contrast and brightness customer controls to obtain a correct picture.

3.With a driver adjust VR1 (located in deflection yoke board Fig. 19) to obtain a proper corvergence at top and bottom of the screen (See Fi g.13)

B&R

G

B&R

G

B&R

G

B&R

G

Figure 13. VR1 Adjustment (YV)

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Contents Main Manual NA8MLImportant Safety Notice Schematics, Voltages and waveforms How to Replace Flat-IC Service NotesChip Component Installation Leadless Chip Component surface mountPreparation Horizontal Oscillator Disable CircuitProcedure Receiver Features Quick Reference Control Operation Remote Control SensorLocation of Controls Receiver Controls InsideLocation of Controls Remote Disassembly for Service Important Notice Right corner Back Cover RemovalScrews at top edge Screw by Antenna jacks Screw at lower Left corner Screw140.0V B+ Voltage Confirmation Chassis Service Adjustment ProceduresSource Voltage Chart High Voltage CheckVertical Raster Shift Adjustment Only for Purity and Convergence ProcedureWhen the CRT or the Yoke is Replaced Dynamic Corvergence Adjustment Purity AdjustmentFinal Convergence Procedure see Fig Service Adjustments Electronic Controls procedureYH Adjustment VR2 for Vertical dynamic convergence XV Adjustmentprecise adjustmentDAF Adjustment Permalloy Convergence Corrector Strip Part No FMK014ZZConvergence Magnets and Wedges Location To toggle between Aging and Serviceman modes Serviceman Mode Electronic ControlsQuick Entry to Serviceman Mode Exiting the Serviceman ModeRemote Control to adjust For AdjustmentsPress Volume Up/Down on Press Channel Up/Down onGeometry Adjustments Default Level MTS Adjustment Default LevelPIP Adjustment Default Level Options Adjustment Default Level Option Adjustment Default Level Press Recall again to select desired field Helpful Hints Entering Serviceman Mode Back-Open MethodTo Check Purity Instructional Flow Chart for Serviceman Mode Press Action + Volume Up Simultaneously on ReceiverCUT-OFF Adjustments PIP Adjustments Tint/Color Adjustment Service Adjustments Electronic ControlsSub-Contrast Adjustment PIP Sub-Contrast Adjustment P03±0.05V DC Color Temperature Adjustment B/W TrackingComplete Adjustment 170±2V DCService Adjustments Electronic Controls, Input Level Adjustment M00 Correction Adjustment D02MTS Circuit Adjustments Stereo Separation Adjustment M01 & M02Focus part of T551 Service Adjustments Mechanical ControlsClock Adjustment S07

CT-32SX31E, CT-36SX31E, CT-32SX31CE, CT-32SX31UE, CT-36SX31CE specifications

The Panasonic CT-36SX31UE, CT-36SX31CE, CT-32SX31UE, CT-32SX31CE, and CT-36SX31E are part of Panasonic's renowned line of CRT (cathode-ray tube) televisions designed to deliver excellent picture quality and robust performance. These models are known for their advanced features, making them a popular choice for home entertainment enthusiasts.

One of the key features of these televisions is their large screen sizes, with the CT-36SX31 models boasting a striking 36-inch display. The CT-32SX31 models, while slightly smaller at 32 inches, offer an equally immersive viewing experience. The screens are designed with high-resolution capabilities that enhance color depth and clarity, allowing viewers to enjoy a lifelike picture.

Panasonic has incorporated various technologies into these models, such as the Digital Comb Filter, which significantly reduces image distortion and enhances the overall picture quality. This feature allows for clearer images with improved color accuracy, making it ideal for watching movies and sports. Additionally, the models are equipped with a 3D Y/C separation processing feature that further elevates the quality of video playback by enhancing the precision of image separation.

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Durability and reliability are characteristic of Panasonic products, and these models are no exception. Built with quality materials, they are designed to last, ensuring that consumers receive value for their investment.

In summary, the Panasonic CT-36SX31UE, CT-36SX31CE, CT-32SX31UE, CT-32SX31CE, and CT-36SX31E are standout CRT televisions renowned for their large screens, high-resolution image quality, excellent sound output, and robust connectivity options. While CRT technology has since transitioned to flat-panel displays, these models remain a testament to Panasonic's commitment to quality and performance in home entertainment.