Service manual

Revision 2/18/05 3 - 21
Hardware Description
Power Supplies and Power Distribution
The power distribution system for VIASYS Neuro
systems may contain the following components:
• Base Unit power supply
• Isolated power supply, 500VA
• Isolated power supply, 800VA
• Computer power supply
• Medical grade power strip (option)
The Isobox must always be used in the following
situations:
• A cart-mounted system that will be used “within the
patient environment”. (The “patient environment”
is defined as a six foot / 183cm sphere around the
patient in all United States and International safety
standards for medical equipment).
• A desktop system that will be used unattended in a
patient room.
• A portable system that has an attached printer
within the patient environment.
In a configuration where an Isobox is not required, all
system components must be connected to a medical
grade power outlet.
The Isobox may NOT be required in the following
situations:
• Desktop systems where the base system is located
outside the “patient environment” (1.5m from
patient).
• Portable systems, where the laptop power supply
meets applicable leakage current specifications.
Endeavor CR and VikingQuest Base
Unit Power Supply
The Endeavor CR and VikingQuest base units contain a
Condor GLM65B 65W medical grade power supply
with outputs of +5V, +15V and –15V.
Field Adjustments/Maintenance
This power supply has no field adjustable parts. A
blown fuse is an indication of catastrophic failure of
circuit component(s). This is a replacement item only.
Testing/Troubleshooting
Use a digital voltmeter to measure the voltage values at
the output connectors. Refer to the GLM65B Data
Sheet, on the following pages for test points.
Removal/Replacement
Endeavor CR
For the Endeavor CR, turn the base unit upside-down
and remove the six screws fastening the bottom cover to
the top cover. Remove the bottom cover to access this
power supply.
VikingQuest
For the VikingQuest, Turn the base unit upside-down
and remove the nine screws holding the upper case to
the lower case.
Turn the base unit right-side-up and remove the five
round-head screws on the back side of the base.
On the left side of the base unit, remove the two screws
fastening the On-Off switch to the case.
Note: There are five cable connections between the VQ
base unit and the Control Panel mounted in the top case.
Use care when lifting the top of the case away from the
base unit.
Carefully lift the top case and tilt it towards the front of
the base unit as you take it off. Either brace the top case
in an upright position as not to stress the cable
connections, or detach the five cables and lay the top
cover aside.
With the top case removed, you can easily check the
voltages present at the output connector of the Condor
power supply.
Condor GLM65B Power Supply