Service manual

3. DIAGNOSTIC CHECK
3.12 Service Manual BSM-4100
Hard Key Check
This item checks the operation of the hard keys on the front panel and the function
dials. The hard key and dial layout appear. Pressing the hard key or rotating the
function dial usually highlights the corresponding hard key or dial on the screen.
If the pressed hard key is not highlighted, the hard key may be faulty. If more than
one hard key has this symptom, the operation board, function dial board or MAIN
board will be faulty.
NOTE
The key does not give a key click sound when it is pressed in this
check.
Procedure to Start the Check Keys or to Exit the Key Check Program
1. To check the hard keys, touch the “HARD KEY CHECK” key.
2. In the above screen, confirm that the corresponding pressed key is highlighted
on the screen.
3. To return to the MANUAL CHECK MENU screen, touch the “RETURN” key.