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 leakage current checks to prevent the customer 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. Measure the resistance value, with an ohmmeter, 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 5.2M
Ω
.
When the exposed metal does not have a return path to the chassis, 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 1.5k
Ω
, 10 watts resistor, in parallel with a 0.15
µ
F 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. In case a measurement is outside 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
1.2.
Before Use
Be sure to disconnect the mains cord before adjusting the voltage selector.
Use a minus(-) screwdriver to set the voltage selector (on the rear panel) to the voltage setting for the area in which the unit will be
used. (If the power supply in your area is 110V ~ 127V or 220V ~ 240V, set to the “110V ~ 127V or 220V ~ 240V” position.)
Note that this unit will be seriously damaged if this setting is not made correctly. (There is no voltage selector for some countries,
the correct voltage is already set.)
1.3.
Before Repair and Adjustment
Disconnect AC power to discharge unit AC Capacitors as such (C5700, C5701, C5702, C5703, C5705, C5706) through a 10
Ω
, 10
W resistor to ground.
Caution:
DO NOT SHORT-CIRCUIT DIRECTLY (with a screwdriver blade, for instance), as this may destroy solid state devices.
After repairs are completed, restore power gradually using a variac, to avoid overcurrent.
Current consumption at AC 100/127 V, 50/60 Hz in NO SIGNAL mode at volume minimum should be ~ 600 mA.
Current consumption at AC 240 V, 50 Hz in NO SIGNAL mode at volume minimum should be ~ 600 mA.
Summary of Contents for SA-BTT775GA
Page 16: ...16 4 1 Others Licenses ...
Page 17: ...17 5 Location of Controls and Components 5 1 Remote Control Key Button Operations ...
Page 19: ...19 5 3 Speaker Connection ...
Page 22: ...22 ...
Page 23: ...23 5 6 Firmware Updates ...
Page 24: ...24 5 7 Enjoying BD LIVE or picture in picture in BD Video ...
Page 25: ...25 5 8 Regarding Divx ...
Page 26: ...26 5 9 Enjoying 3D Video ...
Page 27: ...27 5 10 Using the iPod iPhone 5 10 1 iPod iPhone Connection ...
Page 28: ...28 5 10 2 iPod iPhone Playback ...
Page 29: ...29 5 11 Enjoying VIERA CAST ...
Page 30: ...30 5 12 Playing Back Contents on the DLNA Server DLNA ...
Page 31: ...31 5 13 Playable disc Cards ...
Page 32: ...32 5 14 File Extension Type Support MP3 JPEG DivX MKV ...
Page 34: ...34 3 Gently pull out the tray 4 Remove disc ...
Page 46: ...46 7 3 6 Service Mode Table 6 ...
Page 52: ...52 ...
Page 54: ...54 10 2 Main Components and P C B Locations ...
Page 132: ...132 ...
Page 134: ...134 ...
Page 158: ...158 ...
Page 160: ...160 20 1 2 BD Mechanism 101 118 102 107 115 113 120 116 138 139 140 104 119 ...
Page 162: ...162 ...
Page 173: ...173 MMH1104 ...