Schiller CARDIOVIT AT-2, Руководство по обслуживанию

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Page 4.8
SCHILLER AT-2 6-Channel ECG Unit
SERVICE HANDBOOK Issue 2.1 November 1998
Chapter 4
Module Removal and Replacement
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-2. The room temperature should be between 18 and
28 degrees.
• 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 Assembly Removal
The Top Assembly is mounted on the Base Assembly and is secured to the Base Assembly with
seven screws; access to the screws is gained from the underside of the unit. To remove the Top
Assembly, proceed as follows
WARNING
ENSURE THAT THE MAINS CABLE IS REMOVED !
1. Turn the unit upsidedown and rest on a soft antistatic cloth.
2. Unscrew and remove the seven countersunk retaining screws and washers situated in the
extreme corners and edges of the unit.
4. Grasping the top and bottom of the unit to ensure that the two assemblies cannot part,
carefully return the unit to the standing position.
5. Gently lift the Top Assembly sufficiently to gain access to the interconnecting cables.
Disconnect the cable assembly between the main board MK 12-1 and the keyboard.
6. Gently lift the Top Assembly away from the Base Assembly and place on a soft cloth.