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Panasonic CT-20R6E - Table of Contents

Panasonic CT-20R6E
56 pages
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Important Safety Notice. . . . . . . . . . . . . . . . . . . . 2
Safety Precautions . . . . . . . . . . . . . . . . . 2
Service Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
X-Ray protection circuit check . . . . . . . . 5
Receivers Feature Table . . . . . . . . . . . . . . . . . . . 6
Location of Controls (Receiver)
Receiver Front Control Panel . . . . . . . . . 7
Location of Controls (Remote)
EUR501455 & EUR511502 . . . . . . . . . . 8
EUR501450 . . . . . . . . . . . . . . . . . . . . . . 9
Disassembly for Service . . . . . . . . . . . . . . . . . . 10
Disassembly for CRT Replacement . . . . . . . . . 10
Back Cover Removal. . . . . . . . . . . . . . . . . . . . . 12
Main Components Location. . . . . . . . . . . . . . . . 13
Chassis Service Adjustment Procedures . . . . . 15
130.0V B+ Voltage Confirmation . . . . . 15
Source Voltage Chart . . . . . . . . . . . . . . 15
High Voltage Check . . . . . . . . . . . . . . . 15
Purity and Convergence Procedures. . . . . . . . . 16
Service Mode (Electronic Controls). . . . . . . . . . 19
Entering Service Mode . . . . . . . . . . . . . 19
Toggle between Modes. . . . . . . . . . . . . 19
Exiting the Service Mode . . . . . . . . . . . 19
Sub-Data Adjustment . . . . . . . . . . . . . . 20
Cut-Off Adjustment. . . . . . . . . . . . . . . . 20
MTS Adjustment. . . . . . . . . . . . . . . . . . 21
Options Adjustments . . . . . . . . . . . . . . 21
VCJ Adjustments . . . . . . . . . . . . . . . . . 22
AFC Adjustments . . . . . . . . . . . . . . . . . 23
To Check Purity . . . . . . . . . . . . . . . . . . 24
Helpful Hints . . . . . . . . . . . . . . . . . . . . . 24
Instructional Flow Chart
for Service Mode. . . . . . . . . . . . . . . . . . . . . 25
Service Adjustments
(Electronic Control) . . . . . . . . . . . . . . . . . . . 27
Sub-Contrast. . . . . . . . . . . . . . . . . . . . . 27
Tint/Color Adjustment . . . . . . . . . . . . . . 27
Color Temperature Adjustment. . . . . . . 28
Sub-Brightness. . . . . . . . . . . . . . . . . . . 28
Horizontal Centering. . . . . . . . . . . . . . . 29
Vertical Size . . . . . . . . . . . . . . . . . . . . . 29
MTS Circuit Adjustment . . . . . . . . . . . . 29
Input Level Adjustment . . . . . . . . . . . . . 29
Stereo Separation Adjustment . . . . . . . 29
Clock Adjustment . . . . . . . . . . . . . . . . . 30
Service Adjustments
(Mechanical Controls) . . . . . . . . . . . . . . . . . 30
Focus (Part of T551). . . . . . . . . . . . . . . 30
Audio Signal Path Block Diagram . . . . . . . . . . . 31
Video Signal Path Block Diagram . . . . . . . . . . . 32
Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Schematics
A-Board
CT-20R6E/CE . . . . . . . . . . . . . . . . . . . . . . 46
CT-2016SE, CT-2006SE
CT-20G6E/DE. . . . . . . . . . . . . . 48
CT-20D11E/DE. . . . . . . . . . . . . . . . . . . 50
C-Board. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Voltages
C-Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
A-Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
LAYOUTS
A-Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
C-Boards . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45

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