ADCC0200 and ADCC0300
Appendix C: Troubleshooting
Problem | Check List | |
|
| |
✗ No power to keyboard | ✓ Check AC outlet | |
|
| ✓ Check wall transformer connections |
|
| ✓ Check cable connections to keyboard and |
|
| keyboard matrix interface |
|
| ✓ Measure transformer output at keyboard matrix |
|
| interface |
|
| |
✗ No response to keystrokes (power | ✓ Check connection of keyboard matrix interface to | |
| verified) | |
| system controller's communication port | |
|
| |
|
| ✓ Check baud rates for keyboard and system |
|
| controller |
|
|
|
✗ | Keyboard responds to keystrokes on | ✓ Verify VCR/Monitor status |
| some, but not all keys | |
|
| |
|
|
|
✗ | Cannot perform menu programming | ✓ Verify if Program Lock mode is on. Program Lock |
| (ADCC0300 only) | |
| mode passcode is required to perform program- | |
|
| |
|
| ming functions. |
|
|
|
✗ | Display not visible | ✓ Verify display brightness and contrast level |
|
| |
|
|
|
✗ | Keyboard speaker not audible | ✓ Verify speaker enabled in keyboard menu |
|
| |
|
|
|
✗ | Cannot access main menus of CPU | ✓ Verify that keyboard is in program mode |
| (ADCC0300 only) | |
| ✓ Verify that correct monitor is selected for menu | |
|
| |
|
| programming |
|
| ✓ Verify CPU program monitor output is connected |
|
|
|
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