Sharp CD-C471 W Service Manual page 46

CD-C471 W
Pin No. Port Name
FIN2
2
3
4
TB
5
6
TE
7
9
10 T H
TA
11'
12
T D
13
JP
14
15 TO
FD
16
17
18 FA
19
20
21
AGND
22
23
24
SPG
25
26
I
27
TGL
TOFF
TES
36
HFL
37
SLOF
38
39
40
RFSM
41
42
SLC
43
I
44
DGND
45
46 FSC
TBC
47
NC
49
DEF
50 CLK
In this unit, the terminal with asterisk mark (*) is (open) terminal which is not connected to the outside.
Connection pin for photodiode of pickup.
RF signal is generated through addition with FIN pin, and FE signal is generated through subtraction.
Connection pin for photodiode of pickup.
Connection pin for ohotodiode of pickuo. TE sianal is aenerated throuah subtraction with F Din.
Connection pin for photodiode of pickup.
Pin for input of DC component of TE signal.
Pin to connect gain setting resistor of TE signal to TE signal.
TES (Track error sense) comparator input pin. TE signal is band-passed and input.
Input pin for shock detection.
Pin to set time constant of tracking gain.
Pin to compose tracking phase compensation constant between TD and VR pins.
Pin to set tracking phase compensation.
Pin to set amplitude of tracking jump signal (kick pulse).
Tracking control signal output pin.
Focusing control signal output pin.
Pin to compose focusing phase compensation constant between FD and FA pins.
Pin to compose focusing phase compensation constant between FD-/FA-pins.
Pin to comoose focusina phase comoensation constant between FA and FE Dins.
lo
pin of FE sional.
Pin to connect gain setting resistor of FE signal across TE pin.
GND for analog signal.
Single end output for CV+ and CV- pin input.
Spindle amplifier input.
Pin to connect aain settina resistor in the 12cm mode of soindje.
Pin to connect soindte phase comoensation constant toaether with SPD oin.
Spindle control sianal output pin.
Thread control signal output pin.
Input pin of thread feed signal from micro computer.
input pin of thread feed signal from micro computer.
Input pin of tracking jump signal from DSP.
Input pin of tracking jump signal from DSP.
input pin of tracking gain control signal from DSP. TGL = Gain low at "H"
Input pin of trackina off control sianal from DSP. TOFF = Off at "H"
Output pin of TES signal to DSP.
(HIGH FREQUENCY LEVEL) is used to judge whether main beam is positioned on the bit or on the mirror.
Thread servo off control input pin.
Pin to input CLV error signal from DSP.
Pin to input CLV error signal from DSP.
RF output pin.
Pin to set aain of RF and set 3T comoensation constant toaether with RFSM Din.
(SLICE LEVEL CONTROL) is the outout Din to control of the level of the data slice with RF waveform DSP.
GND pin in the digital system.
Output pin for focus search smoothening capacitor.
(Tracking Balance Control) Pin to set EF balance variable range.
Defect detection outout Din of disk.
Reference clock input pin. 4.23MHz of DSP is input.
Function
46