Sencore CR70 Test Set
Manufacturer:
Model:
CR70
Date:
0
Category:
Group:
Description:
Universal CRT Analyzer and Restorer

Information

Introduction The Sencore CR70 “Beam Builder”™ Universal CRT Analyzer and Restorer is designed to test and restore any type of CRT (cathode ray tube). The tests analyze each type of possible electron gun failure to provide accurate information about the ability of the gun assembly to produce an electron beam with the correct specifications. This information helps you decide whether the CRT will continue to operate in the circuit, whether you should attempt to improve its condition with the CR70 “Beam Builder" functions, or whether it should be replaced. The beam building functions provide five different levels of cathode improvement, providing the correct type of restoration or rejuvenation needed to improve most defective CRTs with the safest cathode recovery methods possible. You use the test results to guide you through the beam building steps. Features The CR70 tests each gun and each element individually, using dynamic tests which simulate the CRT in actual operation. The tests confirm that there are no inter- element shorts, that each gun has the correct dynamic range (range of cathode current between darkest and brightest display) and that each gun has enough emission level to produce an acceptable image on the CRT screen. Color reproduction problems are readily identified with a patented color tracking test, which compares the emission levels of all three electron guns of a color CRT, or the three individual CRTs of a three-tube projection system, to confirm the three colors can be properly balanced against each other. The CR70 provides five types of cathode recovery to allow you to use enough current to do the job effectively, without applying more than would be safe for a particular type of CRT failure. The CR70 meter monitors the amount of restoring current, allowing you to control the results. The CR70 operates on only one gun of a color CRT at a time allowing the beam building action for each gun. The design of the CR70 allows the use of the fewest number of adapter sockets possible. Because of its unique design, the CR70 is virtually obsolete proof. Unlike other CRT testers, the CR70 requires only one adapter socket for each type of CRT base. Setup switches let you compensate for different wiring configurations for a single style of socket. The setup swatches relate directly to the pins of the CRT, allowing a schematic to be used to determine the testing information for a CRT that is not listed in the CR70 setup book

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User Manual
Manual type:
User Manual
Pages:
304
Size:
5.00 Mbytes (5246774 Bytes)
Language:
english
Revision:
Manual ID:
4449
Date:
Quality:
Scanned document, all readable.
Upload date:
04 May 2014
MD5:
726a8a0b72d36e35215e3fad58b7e64e
Downloads:
972

Information

1991 Setup Book

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User Manual
Manual type:
User Manual
Pages:
55
Size:
2.74 Mbytes (2877783 Bytes)
Language:
english
Revision:
Manual ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
04 May 2014
MD5:
9ed66ebf3081d42e4f5fce445714e1d2
Downloads:
596

Information

SAFETY PRECAUTIONS ... ... ... Inside Front Cover DESCRIPTION Introduction ... 4 Features ... ... ... ... , 4 Specifications ... ... 4 Controls ... ... ... ... 6 OPERATION Introduction ... ... ... . , ... 8 AC Power Connection ... .35 Answers To Common Questions On Beam Building ... 36 Understanding The Functions ... 38 How CRTs work ... ... 38 What fails in the C R T ... ... 39 Interpreting the CR70 Cutoff t es t. . ... 42 Low emission due to poisoning ... 43 Temperature sensitive cathode ... 43 Stripped cathode ... , . ... ... 43 Interpreting the CR70 Emission test ... ... 43 Special consideration of color CRTs ... ... 44 How The CR70 Works ... ... , . ... — 44 Filament voltage . . ... ... ... 44 H-K and G1 shorts ... ... ... ... ... 44 Cutoff ... ... ... 45 Emission ... ... ... 45 Relating CR70 bias to the circuit ... 46 Tracking ... ... 47 Remove G1 shorts ... ... ... 48 Rejuvenate ... ... ... ... 48 Restore ... 49 CR70 Output Cable Wiring Diagram ... 50 Testing The Universal Adapter ... ... ... 50 Repairing the Universal Adapter. ... 51 Special CRT Applications . ... ... 52 Testing Sony SD59 CRTs ... ... 52 Restoring CameraTubes ... ... ... — 53 SERVICE AND WARRANTY inside Back Cover

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User Manual
Manual type:
User Manual
Pages:
55
Size:
2.48 Mbytes (2604632 Bytes)
Language:
english
Revision:
Manual ID:
Date:
Quality:
Scanned document, all readable.
Upload date:
12 June 2016
MD5:
a995b0d3d0560e88ba2375cc44174bac
Downloads:
400

Information

SAFETY PRECAUTIONS ... Inside Front Cover DESCRIPTION Introduction ... 4 Features ... ... , 4 Specifications ... ... 4 Controls ... ... 6 OPERATION Introduction ... ... ... , ... 8 AC Power Connection ... .35 Answers To Common Questions On Beam Building ... 36 Understanding The Functions ... 38 How CRTs work ... 38 What fails in the CRT ... 39 Interpreting the CR70 Cutoff test ... 42 Low emission due to poisoning ... 43 Temperature sensitive cathode ... 43 Stripped cathode ... , ... 43 Interpreting the CR70 Emission test ... 43 Special consideration of color CRTs ... 44 How The CR70 Works ... , ... — 44 Filament voltage ... 44 H-K and G1 shorts ... 44 Cutoff ... 45 Emission ... 45 Relating CR70 bias to the circuit ... 46 Tracking ... 47 Remove G1 shorts ... 48 Rejuvenate ... 48 Restore ... 49 CR70 Output Cable Wiring Diagram ... 50 Testing The Universal Adapter ... 50 Repairing the Universal Adapter ... 51 Special CRT Applications ... 52 Testing Sony SD59 CRTs ... 52 Restoring CameraTubes ... — 53

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