Schiller AT-102, Service Handbook

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4.11
Article Number 2. 540 028
SCHILLER AG 2002
AT-102 Service Handbook
Section 4
Module Removal and Replacement
Opening and Closing the Case
Top Assembly Replacement
To replace the Top Assembly proceed as follows:
1. Check that all boards and components are firmly secured. Check for loose screws.
Ensure that no screws or foreign bodies are loose in the bottom of the case.
2. Inspect all the internal cable assemblies and ensure that they are in good condition
and that no visible damage can be seen. Ensure that no cable assemblies are
strained, crushed or caught.
3. Ensure that all connectors are firmly home.
4. Position the Top Assembly in front of the Base Assembly and without straining the
ribbon cable, plug in the interconnecting cable from the keyboard to the main board.
Connect the ribbon and the dual-wire cable assemblies from the LCD board to the
power supply part of the main board.
Note: It may be necessary to tilt the Top Assembly for the cable assemblies to
reach.
5. Carefully position the Top Assembly on the Base Assembly.
6. Grasping the two assemblies to ensure that they cannot part, carefully turn the unit
up-side-down and replace the seven securing screws and washers in the extreme
corners and edges of the unit. Return the unit to the upright position.
7. Carry out the functional check procedure detailed in Chapter 3.