2 PREVENTION OF ELECTRO STATIC
DISCHARGE (ESD) TO ELECTROSTATICALLY
SENSITIVE (ES) DEVICES
Some semiconductor (solid state) devices can be damaged easily by static electricity. Such
components commonly are called Electrostatically Sensitive (ES) Devices. Examples of typical ES
devices are integrated circuits and some field-effect transistorsand semiconductor "chip" components.
The following techniques should be used to help reduce the incidence of component damage caused
by electro static discharge (ESD).
1. Immediately before handling any semiconductor component or semiconductor-equipped
assembly, drain off any ESD on your body by touching a known earth ground. Alternatively,
obtain and wear a commercially available dischargingESD wrist strap, which should be
removed for potential shock reasons prior to applying power to the unit under test.
2. After removing an electrical assembly equipped with ES devices, place the assembly on a
conductive surface such as alminum foil, to prevent electrostatic charge buildup or exposure
of the assembly.
3. Use only a grounded-tip soldering iron to solder or unsolder ES devices.
4. Use only an anti-static solder removal device. Some solder removal devices not classified as
"anti-static (ESD protected)" can generate electrical charge sufficient to damage ES devices.
5. Do not use freon-propelled chemicals. These can generate electrical charges sufficient to
damage ES devices.
6. Do not remove a replacement ES device from its protective package until immediately before
you are ready to install it. (Most replacement ES devices are packaged with leads electrically
shorted together by conductive foam, alminum foil or comparableconductive material).
7. Immediately before removing the protective material from the leads of a replacement ES
device, touch the protective material to the chassis or circuit assembly into which the device
will be installed.
Caution
Be sure no power is applied to the chassis or circuit, and observe all other safety precautions.
Summary of Contents for DVD-LS50EB
Page 10: ...3 PRECAUTION OF LASER DIODE TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
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Page 19: ...7 1 Disassembly TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 20: ...7 2 P C B location TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
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Page 48: ...7 16 Service position TOP PREVIOUS NEXT 7 16 1 Board checks TOP PREVIOUS NEXT ...
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Page 76: ...10 4 1 2 Adjustment ...
Page 98: ...12 1 MAIN P C B TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 99: ...12 2 LCD DRIVE P C B TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 101: ...13 1 OVERALL BLOCK DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 102: ...13 2 POWER SUPPLY BLOCK DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 103: ...13 3 SERVO BLOCK DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 104: ...13 4 AUDIO VIDEO BLOCK DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 105: ...13 5 LCD BLOCK DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 107: ...14 1 INTERCONNECTION SCHEMATIC DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 112: ...15 3 SERVO SECTION MAIN P C B 3 9 SCHEMATIC DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 114: ...15 5 DV2 SECTION MAIN P C B 5 9 SCHEMATIC DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 115: ...15 6 VIDEO OUT SECTION MAIN P C B 6 9 SCHEMATIC DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 116: ...15 7 AUDIO OUT SECTION MAIN P C B 7 9 SCHEMATIC DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 117: ...15 8 OPERATION SECTION MAIN P C B 8 9 SCHEMATIC DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 118: ...15 9 LCD OUT SECTION MAIN P C B 9 9 SCHEMATIC DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 119: ...15 10 SW SECTION SCHEMATIC DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 120: ...15 11 LCD DRIVE SECTION SCHEMATIC DIAGRAM TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 122: ...16 1 MAIN P C B 1 2 COMPONENT SIDE TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 123: ...16 2 MAIN P C B 2 2 FOIL SIDE TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 124: ...16 3 SW LCD DRIVE P C B 1 2 COMPONENT SIDE TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 125: ...16 4 SW LCD DRIVE P C B 2 2 FOIL SIDE TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 127: ...17 1 Casing Parts Mechanism Section Exploded View TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 128: ...17 2 Mechanism Section Exploded View TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 129: ...17 3 Packing Accessories Exploded View TOP PREVIOUS NEXT TOP PREVIOUS NEXT ...
Page 155: ...19 Schematic Diagram for printing with A4 TOP PREVIOUS TOP PREVIOUS ...
Page 177: ...15 10 SW SECTION SCHEMATIC DIAGRAM DVD LS50EB EG GCS GK GN SW P C B SCHEMATIC DIAGRAM 58 ...
Page 178: ...15 10 SW SECTION SCHEMATIC DIAGRAM DVD LS50EB EG GCS GK GN SW P C B SCHEMATIC DIAGRAM 58 ...
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