1 Safety Precautions
1.1. 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, ensure that all the protective devices such as insulation barriers, insulation papers shields are properly installed.
3. After servicing, check for leakage current checks to prevent from being exposed to shock hazards.
1.1.1.
LEAKAGE CURRENT COLD CHECK
1. Unplug the AC cord and connect a jumper between the two prongs on the plug.
2. Using an ohmmeter measure the resistance value, between the jumpered AC plug and each exposed metallic cabinet part on
the equipment such as screwheads, connectors, control shafts, etc. When the exposed metallic part has a return path to the
chassis, the reading should be between 1M
Ω
and 5.2
Ω
.
When the exposed metal does not have a return path to the chassis, the reading must be
.
Figure. 1
1.1.2.
LEAKAGE CURRENT HOT CHECK (See Figure 1.)
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5k
Ω
, 10 watts resistor, in parallel with a 0.15µF capacitors, 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 an AC voltmeter, with 1000 ohms/volt or more sensitivity, to measure the potential across the resistor.
4. Check each exposed metallic part, and measure the voltage at each point.
5. Reverse the AC plug in the AC outlet and repeat each of the above measurements.
6. The potential at any point should not exceed 0.75 volts RMS. A leakage current tester (Simpson Model 229 or equivalent) may
be used to make the hot checks, leakage current must not exceed 1/2 milliamp. should the measurement is outside of the limits
specified, there is a possibility of a shock hazard, and the equipment should be repaired and re-checked before it is returned
to the customer.
4
SA-XR58E / SA-XR58EG
Summary of Contents for SA-XR58E
Page 9: ...5 Operating Instructions Procedures 5 1 Remote Control Operation 9 SA XR58E SA XR58EG ...
Page 10: ...5 2 Main Unit Operation 10 SA XR58E SA XR58EG ...
Page 11: ...5 3 Main Unit connections SA XR58 5 3 1 HDMI connection 11 SA XR58E SA XR58EG ...
Page 12: ...5 3 2 Video connection 12 SA XR58E SA XR58EG ...
Page 13: ...13 SA XR58E SA XR58EG ...
Page 14: ...5 3 3 Audio connection 14 SA XR58E SA XR58EG ...
Page 15: ...15 SA XR58E SA XR58EG ...
Page 16: ...5 3 4 Connection with other equipments 16 SA XR58E SA XR58EG ...
Page 17: ...5 3 5 Tuner Antenna Connection Power 17 SA XR58E SA XR58EG ...
Page 18: ...5 3 6 Headphone connection 18 SA XR58E SA XR58EG ...
Page 29: ...8 3 Main Parts Location Diagram 29 SA XR58E SA XR58EG ...
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Page 111: ...17 Exploded Views 17 1 Cabinet Parts Location SA XR58E SA XR58EG 111 ...
Page 112: ...SA XR58E SA XR58EG 112 ...
Page 113: ...17 2 Packaging SA XR58E SA XR58EG 113 ...
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