Samsung MAX-C550, Service Manual

Samsung Electronics

1-3

1-3 Precautions for Electrostatically Sensitive Devices (ESDs)

1-4 Special Precautions and Warning Labels for Laser Products

1. Some semiconductor ("solid state") devices

are easily damaged by static electricity. 
Such components are called Electrostatically
Sensitive Devices (ESDs).  Examples include
integrated circuits and some field-effect 
transistors. The following techniques will
reduce the occurrence of  component 
damage caused by static electricity.

2. Immediately before handling any 

semiconductor components or assemblies,
drain the electrostatic charge from your 
body by touching a known earth ground.
Alternatively, wear a discharging
wrist-strap device.  (Be sure to remove it
prior to applying power--this is an electric
shock precaution.)

3. After removing an ESD-equipped assembly,

place it on a conductive surface such as 
aluminum foil to prevent accumulation of
electrostatic charge.

4. Do not use freon-propelled chemicals.  

These can generate electrical charges that
damage ESDs.

5. Use only a grounded-tip soldering iron

when soldering or unsoldering ESDs.

6. Use only an anti-static solder removal 

device. Many solder removal devices are
not rated as "anti-static" (these can 
accumulate sufficient electrical charge to
damage ESDs).

7. Do not remove a replacement ESD from its 

protective package until you are ready to
install it. Most replacement ESDs are
packaged with leads that are electrically
shorted together by conductive foam,
aluminum foil or other conductive
materials.

8. Immediately before removing the protective

material from the leads of a replacement
ESD, touch the protective material to the
chassis or circuit assembly into which the
device will be installed.

9. Minimize body motions when handing

unpackaged replacement ESDs. Motions
such as brushing clothes together, or lifting
a foot from a carpeted floor can generate
enough static electricity to damage an ESD.

Precautions

UL     : Manufactured for U.S.A. Market.
CSA  : Manufactured for Canadian Market.
EU 

: Manufactured for European Market.

SCAN : Manufactured for Scandinavian 

Market.

This Product Complies with
DHHS Rules 21CFR, Sub 
chapter J.At date of Manu-
facture

(UL)

(UL,CSA,SCAN)

(EU)

CERTIFIED ONLY TO CANADIAN
ELECTRICAL CODE. 

CERTIFIE EN VERTU DU CODE
CANADIAN DE LELETRICITE
SEULEMENT

(CSA)

CLASS 1
LASER PRODUCT

(UL,CSA,EU)

Fig. 1-3  Warning Labels  (Location: Enclosure Block)

Fig. 1-4   Warning Labels  (Location: Disc Clamper,  Inner Side of Unit Door or Nearby Unit Chassis )

CAUTION : 

INVISIBLE LASER RADIATION WHEN OPEN 

AND INTERLOCKS DEFEATEO AVOIDEXPOSURE TO BEAM

ADVARSEL:

USYNLIG LASERSTRÅLING VED ABNING

NÅR SIKKERHEDSAFBRYDERE ER UDE AF FUNKTION

UNDGA UDSAETTELSE FOR STRALING

VARO:

AVATTAESSA JA SUOJALUKITUS OHITETTAESSA 

OLET ALTTINA NAKYMATTÖMALLE LASERSATEILYLLE ALA
KATSO SATEESEEN!

VARNING:

OSYNLIG LASERSTRÅLNING NAR DENNA DEL 

AR OPPNAD OCH SPARREN AR URKOPPLAD BETRAKTA
EJSTRÅLEN!