| 1. | Describe the keyboard and magazine escapement action |
| | on models 5 and 8. |
| 2. | How is the rubber roll taken out and cleaned? Why |
| | does the rubber roll shaft have a friction drive? |
| 3. | How are the keyboard cam frames taken off? |
| 4. | How are the keyboard cams cleaned and oiled? |
| 5. | Describe how to take a keyboard off and clean it? Explain |
| | in detail. |
| 6. | How is a single cam taken out on an old style keyboard |
| | cam yoke frame? |
| 7. | How is a single cam taken out on the new style keyboard |
| | cam yoke frame? |
| 8. | What should be done to the triggers before replacing |
| | the cam frame? Explain why. |
| 9. | State the causes of more than one matrix dropping, or |
| | “running away.” |
| 10. | What are the causes of matrices failing to respond to |
| | the touch of the keys? |