S3056
3. Bias & Mute Circuit
Focus, Tracking, Sled
Spindle Con. Current
Bias
Mute
R1
R2
R3
R4
Bias pin (pin 27) should be pulled up to more than 1.2V. In case the bias pin’s voltage is pulled down
below 1.2V (typ.), the output current is muted, also Mute pin is same as Bias pin.
[Except Tray, Regulator, Comparator, those are only controlled by Vcc1. ]
7
KSD-I7A004-001
SEPT., 2010 REV. 01