Thermo King SLXi-300, Руководство по обслуживанию

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TK 61552-2-MM-EN
15
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R Riisskk o off IIn njju urry y!!
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Low Voltage
IIm mp po orrtta an ntt:: Some components are connected directly to un-switched battery power. All
connections and circuits labeled with a “2” prefix are connected directly to battery
power. Always disconnect the battery before servicing the unit.
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cca au ussiin ng g sse ev ve erre e b bu urrn nss..
Microprocessor Service Precautions
Take precautions to prevent electrostatic discharge when servicing the microprocessor and its
related components. Even tiny amounts of current can severely damage or destroy electronic
components.
Observe the following precautions when servicing a microprocessor control system to avoid
damaging electronic components. Refer to the appropriate microprocessor diagnosis manual for
more information.
• If the microprocessor has a power switch, turn it OFF before connecting or disconnecting the
battery.
• Disconnect power to the unit.
• Avoid wearing clothing that generates static electricity (wool, nylon, polyester, etc.).
• Wear a wrist strap (P/N 204-622 or equivalent) with the lead end connected to the
microprocessor’s ground terminal. These straps are available from most electronic
equipment distributors. DO NOT wear these straps with power applied to the unit.
• Avoid unnecessary contact with the electronic components.
• Store and ship electronic components in antistatic bags and protective packaging.
• Leave electronic components in their antistatic packing materials until you’re ready to use
them.
• After servicing any electronic components, check the wiring for possible errors before
restoring power to the unit.
• Never use a battery and a light bulb to test circuits on any microprocessor-based equipment.
S Sa affe etty y P Prre ecca au uttiio on nss