4-1
Chapter 4
Maintenance
Title Page
4-1. Introduction........................................................................................... 4-3
4-2. Access Procedures ................................................................................ 4-3
4-3. Removing Analog Modules.............................................................. 4-3
4-4. Removing the Main CPU (A9)......................................................... 4-3
4-5. Removing Rear Panel Assemblies.................................................... 4-4
4-6. Removing the Filter PCA (A12)....................................................... 4-4
4-7. Removing the Encoder (A2) and Display PCAs.............................. 4-4
4-8. Removing the Keyboard and Accessing the Output Block.............. 4-4
4-9. Diagnostic Testing................................................................................ 4-7
4-10. Running Diagnostics ........................................................................ 4-7
4-11. Sequence of Diagnostics Tests..................................................... 4-7
4-12. Diagnostics Error Messages......................................................... 4-7
4-13. Testing the Front Panel .................................................................... 4-13
4-14. Internal Fuse Replacement.................................................................... 4-14
4-15. Complete List of Error Messages ......................................................... 4-14
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