Panasonic CT-27D10B User Manual

Panasonic
The service technician is required to read and follow the “Safety Precautions” and “Important Safety Notice” in this Main Manual.
Color Television
(NA8)
Main Manual
Copyright 2000 by Matsushita Electric Corporation of
America. All rights reserved. Unauthorized copying
and distribution is a violation of law.
“WARNING! This Service Manual is designed for experienced repair technicians only and is not designed for use by the general public.
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 experienced professional 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.”
CT-27D10B AP338
CT-27D10UB AP338
CT-27D10DB AP338
ORDER NO. MTNC000417C1
B5
Chassis
Models
This Service manual is issued as a service guide for the models of the NA8 family listed above. Included in this
manual are a set of schematic, block diagrams, functional descriptions, alignment procedures, disassembly
procedures, and a complete parts list.
®

Panasonic CT-27D10B Specifications

General

Display Technology	CRT
Screen Size	27 inches
Aspect Ratio	4:3
Comb Filter	3-Line Digital
Resolution	480i
Inputs/Outputs	Composite Video, S-Video, RF
Inputs	Composite Video, S-Video
Speakers	2
Weight	80 lbs

Summary

Safety Precautions and Guidelines

General Servicing Safety

Essential safety guidelines for technicians working with electronic equipment.

Leakage Current Testing

X-ray Radiation and HV Checks

Precautions and checks related to X-ray radiation and high voltage.

Service Notes and Component Handling

Flat-IC Replacement Procedure

Service Notes - Horizontal Oscillator Disable Circuit

Disassembly Procedures

CRT Disassembly and Replacement

Specific procedures for accessing, removing, and replacing the CRT.

Chassis Service Adjustment Procedures

High Voltage Check Procedure

Steps to measure and confirm the high voltage output of the TV.

Purity and Convergence Procedure

Vertical Raster Shift Adjustment

Convergence Adjustments

Purity Adjustment Process

Process for adjusting purity using the remote control and specific screens.

Final Convergence Procedure

Detailed steps for final static and dynamic convergence.

Serviceman Mode Operation

Quick Entry to Serviceman Mode

Method for accessing the service mode without removing the back cover.

Exiting the Serviceman Mode

Instructions on how to properly exit the service mode.

Serviceman Mode Adjustments: Sub-Data & Cut-Off

Sub-Data Adjustment Details

Details and default values for Sub-Data adjustments.

Cut-Off Adjustment Details

Details and default values for Cut-Off adjustments.

Serviceman Mode Adjustments: Pin Cushion & MTS

Pin Cushion Adjustment Details

Details and default values for Pin Cushion adjustments.

MTS Adjustment Details

Serviceman Mode Adjustments: PIP

PIP Adjustment Details

Details and default values for Picture-in-Picture adjustments.

Serviceman Mode Adjustments: Options

Serviceman Mode Adjustments: Comb Filter

Comb Filter Adjustment Details

Serviceman Mode: Purity Check & Hints

Picture Purity Check Procedure

Serviceman Mode Flow Chart - Part 1

Serviceman Mode Flow Chart - Part 2

Serviceman Mode Flow Chart - Part 3

Electronic Service Adjustments

Sub-Brightness Adjustment

Sub-Contrast Adjustment

Tint/Color Adjustment Procedure

Electronic Service Adjustments (Continued)

Color Temperature Adjustment

Adjusting color temperature for proper B/W tracking.

Horizontal Centering Adjustment

Complete Adjustment Procedure

MTS Circuit Adjustments

Vertical Size Adjustment

Stereo Separation Adjustment

Audio Signal Path Block Diagram

Video Signal Path Block Diagram

Video-Chroma Signal Path Block Diagram

IC101 (VCJ) Pinout and Functions

IC001 (MPU) Pinout and Functions

Serviceman Mode Adjustment Values Summary

Sub-Data, Cut-Off, Pin Cushion, MTS Adjustments

PIP Adjustments

Serviceman Mode Adjustment Values Summary (Cont.)

Options and Comb Filter Adjustments