M2540-92000-01 A M2540 Ultrasound System Field Service Manual Page 139
Service Procedures: Repair Philosophy
•“Cables” on page 160
•“Cart” on page 163
Repair
Philosophy
Most components in the M2540A are replaced as modules. The power supply, the monitor, and
the system control panel are not serviceable, and are replaced as units. The circuit boards and
function cards inside the M2540A’s internal PC and e-box are replaceable in the field.
Some parts are available at reduced cost, as exchange items. See Table13-12 on page 200 for a
list of exchange parts and their part numbers.
ESD
Safeguards
Follow the electrical static discharge (ESD) guidelines in this section to prevent deterioration or
destruction of sensitive electronic components. General guidelines include:
•Avoid working in carpeted areas.
•If you use a vacuum cleaner to clean the interior of any part of the system sensitive to static
electricity, take the necessary ESD precautions to avoid static buildup and discharge.
•Use a properly grounded wrist strap.
•Use a grounding mat for assembly work on sensitive areas.
General
Precautions
Liquids, including ultrasound gel, can adversely affect the system control panel and other
surfaces. A protective membrane under the keyboard provides some protection against spills,
but liquids may seep into electrical components under the panel and cause problems.
To prevent damage to the system, keep the following good practices in mind:
•Turn the system off when not in use.
•Do not remove or install boards or cables with the system power on.
•Lock the system’s wheels when removing or installing circuit boards.
•When the system is on but not in use, leave the Power control at the lowest setting.