Prevention Of Electrostatic Discharge; Handling Precautions; Locale Management Information - Yamaha DVD-S510 Service Manual

DVD-S510/DV-S5350

PREVENTION OF ELECTROSTATIC DISCHARGE

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
transistors and 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 discharging ESD
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
aluminum 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, aluminum foil or
comparable conductive 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.
8. Minimize bodily motions when handling unpackaged replacement ES devices. (Otherwise harmless motion such as the
brushing together of your clothes fabric or the lifting of your foot from a carpeted floor can generate static electricity (ESD)
sufficient to damage an ES device).

HANDLING PRECAUTIONS

The laser diode in the optical pickup may break down due to potential difference caused by
static electricity of clothes or human body. So be careful of electrostatic breakdown during
repair of the DVD mechanism.
Grounding for electrostatic breakdown prevention
1. Human body grounding.
Use the antistatic wrist strap to discharge the static electricity from
your body.
2. Work table grounding.
Put a conductive material (sheet) or steel sheet on the area where
the optical pickup is placed and ground the sheet.
Caution:
The static electricity of your clothes will not be grounded through the
wrist strap. So take care not to let your clothes touch the optical
pickup.

LOCALE MANAGEMENT INFORMATION

Locale Management Information : This DVD player is designed and manufactured to respond to the Locale Management
Information that is recorded on a DVD disc. If the Locale number described on the DVD disc does not correspond to the
Locale number of this DVD player, this DVD player cannot play this disc.
This product incorporates copyright protection
technology that is protected by method claims of
certain U.S. patents and other intellectual
p r o p e r t y r i g h t s o w n e d b y M a c r o v i s i o n
Corporation and other rights owners. Use of this
copyright protection technology must be
authorized by Macrovision Corporation, and is
intended for home and other limited viewing uses
only unless otherwise authorized by Macrovision
C o r p o r a t i o n . R e v e r s e e n g i n e e r i n g o r
disassembly is prohibited.
3
1
4
2
Anti-static wrist strip
1M
Conductive material
(sheet) or steel sheet
5
2
6
3
4
5
5
2