American Dynamics ADCC0200, ADCC0300 manual Appendix C Troubleshooting, Problem Check List

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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