Sharp CD-C471 W Service Manual page 47

Port Name
Pin No.
51 C L
DAT
52
53 CE
DRF
54
FSS
55
vcc2
56
57
58
LF2
59
60
61
62 LDD
LDS
63
64
F E -
Micro computer command clock input pin.
Micro computer command data input pin.
Micro computer command chip enable input pin.
(DETECT RF) RF level detection output.
(Focus Serch Select) Pin to switch focus search mode. (rt search/+ search for reference voltage)
VCC pin for servo system and digital system.
Pin to connect pass control for reference voltage.
Reference voltage output pin.
Pin to set defect detection time constant of disk.
Pin to connect capacitor for peak hold of RF signal.
Pin to connect capacitor for bottom hold of RF signal.
APC circuit output pin.
APC circuit output pin.
RF system VCC pin.
BAL VCA
Figure 47 BLOCK DIAGRAM OF IC
Function
SPINDLE SERVC
CD-C471 W