Yamaha DVD-S80 Service Manual page 24

DVD-S80
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4. ADSC Internal Ram Data Display
The servo learning value in the RAM data inside the servo processor ADSC is displayed.
This value is useful for evaluating the servo operation, disc quality and the OPU.
The basic contents are shown below:
TE
L 13942296513
5. Sales demonstration lock function
This function prevents discs from being lost when the unit is used for sales demonstrations by disabling the disc eject
function. "LOCKED" is displayed on the unit, and ordinary operation is disabled.
5.1. Setting
The sales demonstration lock is set by simultaneously pressing the " a " button on the player and the "POWER" button on the
remote control unit for a few second.
5.2. Cancellation
The lock can be cancelled by the same procedure as used in setting. "UNLOCKED" is displayed on cancellation.
(Disconnecting the power cable from the power outlet does not cancel the lock function.)
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