Sharp CD-C410W Service Manual page 39

IC1 VHiLA9240M/-1:Servo Amp.,(LA9240M) (2/2)
Port Name
Pin No.
51 CL Micro computer command clock input pin.
52 DAT Micro computer command data input pin.
53 CE Micro computer command chip enable input pin.
54 DRF (DETECT RF) RF level detection output.
55 FSS (Focus Serch Select) Pin to switch focus search mode. (± search/+ search for reference voltage)
56 VCC2 VCC pin for servo system and digital system.
57 REFI Pin to connect pass control for reference voltage.
58 VR Reference voltage output pin.
59 LF2 Pin to set defect detection time constant of disk.
60 PH1 Pin to connect capacitor for peak hold of RF signal.
61 BH1 Pin to connect capacitor for bottom hold of RF signal.
62 LDD APC circuit output pin.
63 LDS APC circuit output pin.
64 VCC1 RF system VCC pin.
VCC1 LDS
64 63
FIN2 1
FIN1 2
I/V
E 3
4
F
5
TB
TE- 6
7
TE
8
TESI
SCI 9
T.SERVO & T.LOGIC
10
TH
TA 11
12
TD-
TD 13
14
JP
TO 15
16
FD
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CD-C410W/C415W/C420W,CP-C410/C415/SR410
LDD BH1 PH1
62 61 60
APC
RF DET
VCA
BAL VCA
TE
F.SERVO & F.LOGIC
17 18 19
FD-
FA FA-
Figure 39 BLOCK DIAGRAM OF IC
Function
LP2 VR REFI VCC2 FSS DRF
59 58 57 56 55 54
REF
µ-COM
INTER FACE
SPINDLE SERVO
20 21 22 23 24 25 26 27
FE FE- AGND SP SPI SPG SP- SPD
– 39 –
CE DAT CL CLK DEF
53 52 51 50 49
48
NC
47 TBC
46 FSC
45 DGND
SLC
44
SLI
43 SLC
42 RFS-
41 RFSM
RF AMP
40 CV+
39 CV-
38 SLOF
37 HFL
36 TES
35 TOFF
34 TGL
33 JP+
SLED SERVO
28 29 30 31 32
SLEQ SLD SL- SL+ JP-