ASEM SR 85, Руководство по обслуживанию

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1.3 Precaution for Electrostatic Sensitive Device
1-3-1 Some semiconductor (solid state) devices are easily damaged by static electricity. Such components are called Electrostatic
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.
1-3-2 Immediately before handling an y semiconductor components or assemblies, drain the electrost atic 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)
1-3-3 After removing an ESD-equipped assembly, place it on a conducti ve surface su ch as alum inum foil to prevent accumulation of
electrostatic charge.
1-3-4 Do not use Freon-propelled chemicals. These can generate electrical charges that damage ESDs.
1-3-5 Use only a grounded-tip soldering iron when soldering or unsoldering ESDs.
1-3-6 Use only an anti-static solder removal device. Man y solder re moval devices are not rated as anti-static; these can accumulate
sufficient electrical charge to damage ESDs.
1-3-7 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.
1-3-8 Immediately before removing the protective m aterial from the leads of a replacement ESD, touch the protective material to the
chassis or circuit assembly into which the device will be installed.
1-3-9 Minimize body motions when handling 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.
1.4 Operational Precaution
1-4-1 The hitting element of the printer mechanism’s thermal head and the driver IC are easily damage. Never allow these components to
come into contact with metal or other hard objects.
1-4-2 Never touch the printer mechanism’s heating element with your hand. Doing so can dam age the heating element and affect proper
operation.
1-4-3 The head and motor areas are very hot during and immediately after printing. Do not touch components in these areas directly with
your hand.
1-4-4 Do not use an y paper other than these specified in this manual, otherwise print head reliability and print quality are affected
adversely.
1-4-5 Thermal paper starts to color at around 70
℃
. Take care to protect unused and printed thermal paper against the affects of heat, light
and humidity, which can cause the paper to color and characters on the paper to feed.
1-4-6 Take the roll paper out of the printer when you will not use the printer for a long time in a high temperature and humidity environment.
SR 85 - Service Manual