3
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, see to it that all the protective devices such as insulation barriers, insulation papers shields are properly
installed.
3. After servicing, carry out the following for leakage current checks to prevent the customer from being exposed to shock haz-
ards.
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 1mW and 5.2mW. When the exposed metal does not have a return path to the chas-
sis, the reading must be .
1.1.2.
Leakage Current Hot Check
1. Plug the AC cord directly into the AC outlet. Do not use an isolation transformer for this check.
2. Connect a 1.5kW, 10 watts resistor, in parallel with a 0.15mF 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.
Fig. 1
Summary of Contents for VIERA Link SB-ZT2EE
Page 10: ...10 5 Location of Controls and Components 5 1 Main Unit SU ZT2 ...
Page 11: ...11 5 2 Speaker Unit SB ZT2 5 3 Remote Control ...
Page 12: ...12 6 Installation ...
Page 13: ...13 6 1 Basic Connections 6 1 1 Connecting equipment with HDMI terminal TV DVD recorder etc ...
Page 14: ...14 6 1 2 Connecting equipment without HDMI terminal DVD player VCR etc ...
Page 15: ...15 6 1 3 Connecting STB etc and audio terminals DVD player etc ...
Page 16: ...16 6 1 4 Other connections ...
Page 17: ...17 6 2 AC power supply connection ...
Page 18: ...18 7 Speaker setting SB ZT2 7 1 Setting the speakers Front and Surround speakers ...
Page 19: ...19 ...
Page 20: ...20 7 2 Setting surround speakers ...
Page 28: ...28 9 2 2 Speaker Unit SB ZT2 ...
Page 29: ...29 9 2 3 Speaker Unit SB ZT2 Wireless Link ...
Page 30: ...30 ...
Page 32: ...32 ...
Page 33: ...33 10 1 Main Parts Location Diagram 10 1 1 Main Unit SU ZT2 ...
Page 34: ...34 10 1 2 Speaker Unit SB ZT2 ...
Page 36: ...36 10 2 2 Speaker Unit SB ZT2 ...
Page 49: ...49 Step 4 Remove the Weight ...
Page 50: ...50 Step 5 Remove 10 screws ...
Page 54: ...54 Step 11 Remove 2 screws Step 12 Lift up to remove Arm Cover A ...
Page 56: ...56 Step 14 Tilt the Woofer Block in order as arrows shown to detach it from the Tweeter Block ...
Page 67: ...67 Step 3 Remove the heatsink with the IC5701 ...
Page 68: ...68 Step 4 Remove 1 screw Step 5 Remove IC5701 from the heatsink ...
Page 70: ...70 Step 4 Place the heatsink with the IC5701 onto the SMPS P C B ...
Page 82: ...82 Step 4 Remove 3 screws Step 5 Remove the Power Button ...
Page 87: ...87 Step 3 Remove 4 screws Step 4 Lift up to remove Woofer Speaker SP1 ...
Page 111: ...111 Step 11 Remove 3 screws ...
Page 112: ...112 Step 12 Remove the Light Panel Step 13 Remove the Power Button ...
Page 113: ...113 Step 14 Hold on to the P C B Holder and lift up the Input P C B as arrow shown ...
Page 114: ...114 Step 15 Place the D Amp P C B and Input P C B on an insulation sheet ...
Page 132: ...132 ...
Page 133: ...133 14 Overall Simplified Block 14 1 Signal Flow SU ZT2 ...
Page 144: ...144 ...
Page 148: ...148 ...
Page 168: ...168 ...
Page 176: ...176 ...
Page 178: ...178 ...
Page 182: ...182 ...
