Panasonic CT-32SX31CE, CT-32SX31E, CT-32SX31UE, CT-36SX31CE, CT-36SX31E, CT-36SX31UE To Check Purity:, Helpful Hints Entering Serviceman Mode (Back-Open Method)

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To Check Purity:

Press the Recall Button on the Remote Control when in Serviceman Mode (red “CHK” is displayed) to e nter the

Purity Field Check Mode.

Press Recall again to select desired field.

NORMAL

SCREEN

WHITE

SCREEN

RED

SCREEN

GREEN

SCREEN

BLUE

SCREEN

Figure 21. Purity Check Field Mode.

Helpful HintsEntering Serviceman Mode (Back-Open Method)

1. Wh ile the Receiver is ON or Puggled and oper ating in Normal Mode ,

momentarily short test point FA1 (TP8) to Cold Ground ( ) FA2

(TP3) A-Board.

The Receiver enters the Aging Mode

.

Yellow letters “CHK” appear in the upper left corner of the CRT.

(The Volume Up/Down will adjust rapidly).

2. Si multaneously press th e Action and the Volume Up buttons on the

Receiver Control Panel.

The Receiver enters the Serviceman Mode.

The letter in “CHK” turn red.

(The Volume Up/Down will adjust normally).

(All customer controls are set to nominal level).

IMPORTANT NOTE:

Always Exit the Serviceman

Mode Following Adjustments.

Contents

Main Service Manual Important Safety Notice Safety Precautions General Guidelines Leakage Current Cold Check Leakage Current Hot Check Schematics, Voltages and waveforms Service Notes Leadless Chip Component (surface mount) Component Removal Chip Component Installation How to Replace Flat-IC Service Notes (Continued) Note Horizontal Oscillator Disable Circuit Use cold ground( ) for negative lead. - 6 - Receiver Feature Table Table 1. Receiver Features Location of Controls (Receiver) Quick Reference Control Operation Quick Reference Control Operation Location of Controls (Remote) Disassembly for Service Back Cover A-Board - Main Chassis Note: Some tie-wraps that secure the wire dressings may need to be unfastened for chassis removal. L-Board - CRT Output Disassembly for Service (Continued) Back Cover Removal Chassis Service Adjustment Procedures ( 140.0V B+ Voltage Confirmation Source Voltage Chart High Voltage Check Purity and Convergence Procedure When the CRT or the Yoke is Replaced Place the vertical raster shift tabs at 3 oclock (90 from the purity and convergence tabs) Vertical Raster Shift Adjustment Initial Center Static Convergence Note: Precise convergence at this point is not important. Purity Adjustment Final Convergence Procedure Dynamic Corvergence Adjustment XV Adjustment(precise adjustment) Note: Apply a red pattern and confi rm purity, if purity is poor, repeat purity adjustments. Permalloy Convergence Corrector Strip (Part No. 0FMK014ZZ) DAF Adjustment - 16 - RGB Figure 19. Convergence Magnets and Wedges Location IMPORTANT NOTE: Serviceman Mode (Electronic Controls) Quick Entry to Serviceman Mode: Exiting the Serviceman Mode: To toggle between Aging and Serviceman modes: Note: Only the applicable settings for the Receiver serviced will be available (See Page Page Note: Writ e Down the original value set (b in For Adjustments: Page To Check Purity: Helpful Hints Entering Serviceman Mode (Back-Open Method) The Receiver enters the Serviceman Mode. The Receiver enters the Aging Mode Instructional Flow Chart for Serviceman Mode C A Instructional Flow Chart for Serviceman Mode - Continued B Instructional Flow Chart for Serviceman Mode - Continued C IMPORTANT NOTE: Always Exit the Serviceman Mode Following Adjustments. Service Adjustments (Electronic Controls) Sub-Contrast Adjustment PIP Sub-Contrast Adjustment (P03) Sub-Brightness (B02) Tint/Color Adjustment Color Temperature Adjustment (B/W Tracking) Complete Adjustment 0V DC Service Adjustments (Electronic Controls, cont.) Horizontal Centering (D00) E-W PCC Adjustment (D0C) Corner PCC Adjustment (D0B) H-Size Adjustment (D0D) V-Correction Adjustment (D02) MTS Circuit Adjustments Input Level Adjustment (M00) Stereo Separation Adjustment (M01 & M02) 10k 4700p Service Adjustments (Electronic Controls, cont.) Clock Adjustment (S07) Service Adjustments (Mechanical Controls) Focus (part of T551)