Schiller CARDIOVIT AT-1, Service Handbook

Page: 56 / 84

56
Opening the Case
Prerequisites
• The unit must be placed on an antistatic mat and antistatic precautions observed
when any maintenance is carried out on the AT-1 / AT-1smartprint. The room
temperature should be between 18 and 28 °C.
• THE WARNINGS AND CAUTIONS AT THE BEGINNING OF THE CHAPTER MUST BE
OBSERVED.
Tools
• Posi-drive screwdriver
Test Equipment
The following test equipment is required to carry out the functional test after unit assembly
• SCHILLER Patient Cable
• Patient Simulator e.g. phantom 320.
Top Housing Removal
The Top Housing is mounted on the Base Assembly and is secured to the Base Assembly
with six screws; access to the screws is gained from the underside of the unit. To remove
the Top Housing, proceed as follows
WARNING
ENSURE THAT THE MAINS CABLE IS REMOVED !
1. Turn the unit upside-down and rest
on a soft antistatic cloth.
2. Unscrew and remove the six
countersunk retaining screws and
washers situated in the extreme
corners and edges of the unit.
3. Grasping the top housing and base
assembly to ensure that they
cannot part, carefully return the
unit to the standing position.
4. Release the catch and open the
paper tray lid with the printer roller.
5. Gently lift the Top Housing and turn
it slightly counter-clockwise so it
can be lifted away from the paper
tray lid.
6. Disconnect the cable assembly between the control and power supply board MK
11-10 and the keyboard.
7. Gently lift the Top Housing away from the Base Assembly and place it on a soft
cloth.