2 Safety Precautions
2.1. General Guidelines
1. When servicing, observe the original lead dress. If a short circuit is found, replace all parts which have been overheated or
damaged by the short circuit.
2. After servicing, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, make the following leakage current checks to prevent the customer from being exposed to shock hazards.
2.2. Touch-Current Check
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a measuring network for touch currents between each exposed metallic part on the set and a good earth ground such
as a water pipe, as shown in Figure 1.
3. Use Leakage Current Tester (Simpson 228 or equivalent) to measure the potential across the measuring network.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reserve the AC plug in the AC outlet and repeat each of the above measure.
6. The potential at any point (TOUGH CURRENT) expressed as voltage U
1
and U
2
, does not exceed the following values:
For a. c.: U
1
= 35 V (peak) and U
2
= 0.35 V (peak);
For d. c.: U
1
= 1.0 V,
Note:
The limit value of U
2
= 0.35 V (peak) for a. c. and U
1
= 1.0 V for d. c. correspond to the values 0.7 mA (peak) a. c. and 2.0
mA d. c.
The limit value U
1
= 35 V (peak) for a. c. correspond to the value 70 mA (peak) a. c. for frequencies greater than 100 kHz.
7. In case a measurement is out of the limits specified, there is a possibility of a shock hazard, and the equipment should be
repaired and rechecked before it is returned to the customer.
Figure 1
6
TH-42PV60A / TH-42PV60H / TH-42PV60M / TH-42PV60MT
Содержание TH-42PV60A
Страница 5: ...1 Applicable signals 5 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 17: ...7 Location of Lead Wiring 7 1 Lead of Wiring 1 17 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 18: ...7 2 Lead of Wiring 2 18 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 19: ...7 3 Lead of Wiring 3 19 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 20: ...7 4 Lead of Wiring 4 20 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 21: ...7 5 Lead of Wiring 5 21 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 22: ...7 6 Lead of Wiring 6 22 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 26: ...8 3 No Picture 26 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 29: ...29 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 30: ...9 3 Option Description 30 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 31: ...31 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 34: ...10 4 Adjustment Volume Location 10 5 Test Point Location 34 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 42: ...42 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 65: ...14 Schemaatic and Block Diagram 14 1 Schematic Diagram Notes TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT 65 ...
Страница 118: ...15 2 Packing Exploded Views 1 118 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 119: ...15 3 Packing Exploded Views 2 119 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 120: ...15 4 Packing Exploded Views 3 120 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...
Страница 122: ...16 Electrical Replacement Parts List 16 1 Replacement Parts List Notes 122 TH 42PV60A TH 42PV60H TH 42PV60M TH 42PV60MT ...