Invivo Millennia 3155A, Service Manual

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GENERAL SERVICE PRECAUTIONS
Obtain a thorough understanding of each of the following precautions before attempting to perform
any disassembly or service procedure. Damage to the instrument or injury to yourself may result if
these precautions, as well as common sense, are not used.
Service to this product should be performed at the recommended intervals only by trained, qualified
service personnel familiar with the operation and service documentation for this monitor.
Shock Hazard exists when this monitor is operated without the chassis cover. Use caution when
working on units with power applied.
Always disconnect monitor from AC Main Power before performing service on internal assemblies.
Due to the monitor's internal battery, power may be present even when disconnected from the AC
Main Power. When necessary, disconnect the internal battery prior to performing service.
For continued protection against fire hazard, replace fuses with same type and rating only.
Always follow proper electrostatic discharge (ESD) procedures during component and assembly
handling to prevent static discharge damage to sensitive parts.
Use only replacement parts specified in this manual; ensure that defective or worn parts are properly
disposed of in accordance with local regulations.
When cleaning the unit, do not permit liquid to enter the case. When cleaning, use proper materials
and ensure total dryness before powering the monitor. Use care that cleaning fluids do not attack
plastic or painted surfaces (e.g., avoid ammonia, phenol or acetone based cleaners that may damage
the monitor surface). Use care that wiping rags do not abrade the surfaces.
Assembly hardware has been secured with a thread locking agent. After several assembly/
disassembly cycles new locking agent will be required. (Use Loctite 42540 or similar type for use
near PVC or acrylic plastics.)
In general, handle all Printed Circuit Boards by their edges. Oils, sweat, dirt, etc. can induce leakage
paths in high impedance circuits which impede their operation. Such contamination will also
promote corrosion of circuits yielding a long term reliability problem.
Avoid rough handling of all exposed chassis parts and front panel overlay. These parts can be
scratched causing obtrusive cosmetic defects.