terminals, control shafts, etc. If the exposed metallic part has a returnpath to the chassis, the
reading should be between 240k and 5.2M . If the exposed metallic part does not have a
return path to the chassis, the reading should be infinite.
Leakage current hot check
Plug the AC cord directly into the AC outlet. Do not use an isolation transformer during the check.
Connect a 1.5k 10 watt resistor in parallel with a 0.15
F capacitor between an exposed
metallic part and ground. Use earth ground, for example a water pipe.
Using a DVM with a 1000 ohms/volt sensitivity or higher, measure the AC potential across the
resistor.
Repeat the procedure and measure the voltage present with all other exposed metallic parts.
Verify that any potential does not exceed 0.75 volt RMS. A leakage current tester (such a
Simpson model 229, Sencore model PR57 or equivalent) may be used in the above procedure, in
which case any current measure must not exceed 0.5 milliamp. Ifany measurement is out of the
specified limits, there is a possibility of a shock hazard and the receiver must be repaired and
rechecked before it is returned to the customer.
Hot check circuit
Insulation test
Connect an insulation tester between an exposed metallic part and A.C. line. Apply 1080VAC/
60Hz for 1 second. Confirm that the current measurement is 0.5mA ~ 2.0mA. Repeat test with
other metallic exposed parts.
X ray radiation
WARNING
The potential source of x-ray radiation in the TV set is in the high voltage section and the picture
tube.
NOTE
It is important to use an accurate, calibrated high voltage meter.
Set the brightness, picture, sharpness and color controls to minimum.
Measure the high voltage. The high voltage should be 29.25 ± 1.25kV. If the upper limit is out of
tolerance, immediate service and correction is required to insure safe operation and to prevent
3
Summary of Contents for CT32E14J - 32" COLOR TV
Page 33: ...13 1 1 C Board Chassis C Board component location 13 1 2 A Board Chassis 33 ...
Page 34: ...13 1 3 A Board Surface mounted components A Board bottom view 34 ...
Page 35: ...35 ...
Page 37: ...37 ...
Page 38: ...17 2 Notas de Esquematicos en Espa ñ ol 38 ...
Page 39: ...39 ...
Page 41: ...19 2 Parts List 41 ...
Page 46: ...C2532 ECA1HM4R7B CAP E 4 7UF 50V 46 ...
Page 49: ...IC3002 MM1501XNRE INT CKT 49 ...
Page 83: ...12 3 Instructional flow chart for service mode continued 26 ...
Page 95: ...Back Cover Removal CT 25L8G CT 25L8UG 38 ...
Page 96: ...14 2 Chassis Components Rear view inside cabinet 39 ...
Page 98: ...14 2 3 CT 20L8 A Board Chassis A Board Top view CT 20L8G 41 ...
Page 99: ...14 2 4 CT 25L8 CT 25L8U A Board Chassis A Board Top view CT 25L8G CT 25L8UG 42 ...
Page 100: ...14 2 5 A Board Surface mounted components A Board bottom view 43 ...
Page 101: ...44 ...
Page 103: ...46 ...
Page 104: ...18 2 Notas de Esquemáticos en Español 47 ...
Page 105: ...48 ...
Page 107: ...20 2 Parts List 50 ...
Page 113: ...D3019 CVS20A120MTA DIODE 56 ...
Page 115: ...L805 EXCELDR35V FERRITE BEAD CT 20G8G CT 20G8SG CT 20L8G 58 ...
Page 124: ...1 2 3 4 5 6 7 8 A B C D E F G H I J A BOARD 1 of 4 TNP2AH047AA AB CT 20L8G CT 20G8G CT 20G8SG ...
Page 125: ...1 2 3 4 5 6 7 8 A B C D E F G H I J A BOARD 2 of 4 TNP2AH047AA AB CT 20L8 CT 20G8 CT 20G8S ...
Page 126: ...1 2 3 4 5 6 7 8 A B C D E F G H I J A BOARD 3 of 4 TNP2AH047AA AB CT 20L8G CT 20G8G CT 20G8SG ...
Page 127: ...1 2 3 4 5 6 7 8 A B C D E F G H I J A BOARD 4 of 4 TNP2AH047AA AB CT 20L8G CT 20G8G CT 20G8SG ...
Page 128: ...1 2 3 4 5 6 7 8 A B C D E F G H I J A BOARD 1 of 4 TNP2AH047FA CT 25L8G CT 25L8UG ...
Page 129: ...1 2 3 4 5 6 7 8 A B C D E F G H I J A BOARD 2 of 4 TNP2AH047FA CT 25L8G CT 25L8UG ...
Page 130: ...1 2 3 4 5 6 7 8 A B C D E F G H I J A BOARD 3 of 4 TNP2AH047FA CT 25L8G CT 25L8UG ...
Page 131: ...1 2 3 4 5 6 7 8 A B C D E F G H I J A BOARD 4 of 4 TNP2AH047FA CT 25L8G CT 25L8UG ...
