Panasonic CT-36SX31CE Chassis Service Adjustment Procedures, 140.0V B+ Voltage Confirmation

Page 12

Chassis Service Adjustment Procedures

All service adjustments are factory preset and should not require adjustment unless controls and/or associated components are replaced.

Note: Connect the (-) lead of the voltmeter to the appropriate ground. Use heat sink when the HOT ground symbol

( ) is used. Otherwise, use COLD ground ( ) — Tuner shield.

A-BOARD

 

Q002

 

D-BOARD

 

 

 

 

IC001

 

IC881

IC882

IC883

 

 

 

 

 

IC002

 

 

 

L008

 

 

 

 

 

IC101

 

D751

 

 

 

 

IC2301

 

 

 

 

 

 

IC1801

 

 

T

T

 

 

 

U

 

 

 

U

+

 

 

N

C 30 23

 

 

N

 

 

E

IC3001

 

 

E

-

 

 

R

 

 

R

 

 

 

 

 

 

 

 

 

A/V REAR INPUTS

 

8

TP

 

 

 

1

 

 

Q804 L826

L824

 

-

 

 

 

 

+

 

 

 

D827

 

 

 

 

 

 

 

 

 

 

D825

 

 

 

 

C 84 0

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

T801

Q801

Q551

D511

MOMENTARILY CONNECT A JUMPER FOR ENTERING SERVICE MODE (TP8 to COLD GND)

140.0V B+ Voltage Confirmation

1.Set the Bright and the Picture to Minimum by using the Picture Menu.

2.Connect the DVM between TPP17 (+ side) and cold ground ( ).

3.Confirm that B+ voltage is 140.0V ± 1.5V. This voltage supplies B+ to the Horizontal Output & Flyback circuits.

Source Voltage Chart

120V AC line input. Set the Bright and the Picture to Minimum by using the Picture Menu. Use cold ground

( ) for the (-) lead of the DVM.

.

LOCATION (D-Board)

VOLTAGE

 

 

 

TPP17

(by D825) +B2

140.0V ± 1.5V

 

 

 

TPP25

(by D827) 9V

9.0V ± 1.5V

 

 

 

TPP19

(by Q804) 15V

15.0V ± 2.0V

 

 

 

 

TPP20

(by C840) 15V

(VER.)

15.0V ± 1.5V

 

 

 

 

TPP21

(by L826) -15V

(VER.)

-15.0V ± 1.5V

 

 

 

TPP22

(by L824) SOUND

32.5V ± 2.0V

 

 

 

 

LOCATION (D-Board)

VOLTAGE

 

 

 

TPD7

(by D511) 220V

220.0V ± 9.0V

 

 

LOCATION (A-Board)

VOLTAGE

 

 

 

TPA6

(by IC883) MAIN 12V

12.0V ± 0.5V

 

 

 

TPA7

(by IC3001) MAIN 9V

9.0V ± 0.5V

 

 

 

TPA8

(by L008) MAIN 5V

5.0V ± 0.3V

 

 

 

TPA16

(by Q002) STBY 3.3V

3.3V ± 0.2V

 

 

 

TPA18

(by C3023) BTL 30V

32.0V ± 2.0V

 

 

 

Adjust Picture Menu for normalized video adjustments.

High Voltage Check

1.Select an active TV channel and confirm that horizontal is in sync.

2.Adjust Brightness and Picture using Picture Icon menu so video just disappears.

3.Confirm B+ 140.0V is within limit.

4.Using a high voltage meter confirm that the High Voltage is 31.0kV ± 1.0kV.

- 12 -

Image 12
Contents Main Manual NA8MLImportant Safety Notice Schematics, Voltages and waveforms Service Notes Chip Component InstallationHow to Replace Flat-IC Leadless Chip Component surface mountHorizontal Oscillator Disable Circuit ProcedurePreparation Receiver Features Remote Control Sensor Location of Controls ReceiverQuick Reference Control Operation Controls InsideLocation of Controls Remote Disassembly for Service Important Notice Back Cover Removal Screws at top edge Screw by Antenna jacks Screw at lowerRight corner Left corner ScrewChassis Service Adjustment Procedures Source Voltage Chart140.0V B+ Voltage Confirmation High Voltage CheckPurity and Convergence Procedure When the CRT or the Yoke is ReplacedVertical Raster Shift Adjustment Only for Purity Adjustment Final Convergence Procedure see FigDynamic Corvergence Adjustment Service Adjustments Electronic Controls procedureXV Adjustmentprecise adjustment DAF AdjustmentYH Adjustment VR2 for Vertical dynamic convergence Permalloy Convergence Corrector Strip Part No FMK014ZZConvergence Magnets and Wedges Location Serviceman Mode Electronic Controls Quick Entry to Serviceman ModeTo toggle between Aging and Serviceman modes Exiting the Serviceman ModeFor Adjustments Press Volume Up/Down onRemote Control to adjust Press Channel Up/Down onGeometry Adjustments Default Level MTS Adjustment Default LevelPIP Adjustment Default Level Options Adjustment Default Level Option Adjustment Default Level Helpful Hints Entering Serviceman Mode Back-Open Method To Check PurityPress Recall again to select desired field Instructional Flow Chart for Serviceman Mode Press Action + Volume Up Simultaneously on ReceiverCUT-OFF Adjustments PIP Adjustments Service Adjustments Electronic Controls Sub-Contrast AdjustmentTint/Color Adjustment PIP Sub-Contrast Adjustment P03Color Temperature Adjustment B/W Tracking Complete Adjustment±0.05V DC 170±2V DCService Adjustments Electronic Controls, Correction Adjustment D02 MTS Circuit AdjustmentsInput Level Adjustment M00 Stereo Separation Adjustment M01 & M02Service Adjustments Mechanical Controls Clock Adjustment S07Focus part of T551

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.

Audio quality is also a focal point of these models. The television sets come with built-in speakers, providing powerful sound output that complements the stunning visuals. With features like surround sound capability, viewers can enjoy an enriched audio experience that brings movies and shows to life.

Connectivity is another essential aspect of these televisions. They are equipped with multiple input options, including composite, S-Video, and component inputs. This variety allows users to connect various devices like DVD players, gaming consoles, and cable boxes, facilitating a versatile entertainment setup.

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.