HT-CN410DVH (serv.man2) - Sharp Audio Service Manual (repair manual). Page 54

HT-CN410DVH

54

IC801, DVD Servo (ES6602SF)

ES6602 PIN DESCRIPTION

DVDRFP, DVDRFN

1,2

I

Differential RF signal attenuator inputs.

A2, B2, C2, D2

3-6

I

AC coupled photo detector interface input for the differential phase 
detector (DPD) from the main beam photo matrix.

CP, CN

7, 8

_

Differential phase tracking low-pass filter pins. Connect CP to CN via 
capacitors.

D, C, B, A

9-12.

I

Photo detector interface input from the main beam photo matrix.

NC

13-16, 37, 41, 43, 44, 50, 64

I

No connect

CD_F, CD_E

17, 18

I

CD photo detector interface input from the CD side beam photo 
detector; used for CD tracking detection.

VPB

19

P

Servo block power supply.

VC

20

O

Reference voltage out (VPB/2). Output impedance is less than 50

Ω

DVDLD

21

O

DVD APC output; controls laser power for DVD.

CDLD

22

O

CD APC output; controls laser power for CD.

DVDPD

23

I

DVD APC input

CDPD

24

I

CD APC input

VNB

25

G

Servo block ground

LDON

26

I

APC On/Off control. A high level activates LD Output. (open is low)

MIRR

27

O

Mirror detect output

MP, MB

28, 29

I

Mirror top and bottom hold pins. Connected to VPB pin 19 via 
capacitors.

MLPF

30

I

Mirror low-pass filter pin. Connected to VPB pin 19 via a capacitor.

MIN

31

I

RF input signal for mirror. AC coupled input for the mirror detection 
circuit from MEVO pin 32.

PIO

32

O

Buffered Pull-In Signal Output; This is the PI (pin 38) with gain (18 or 
24dB - see CCR register 2Ch, bit 6).

MMON

33

O

Mirror Monitor Output: When the monitor output signal is selected by 
bits 3:0 of the CER register 3Ch, mirror-related signals can be 
observed.

DFT

34

O

Defect Output: When the Pull-In signal level is below the detection 
level, or when the RF signal level is below the detection level, the 
DFT output goes high. The defect output is selected by the serial port.

DB

35

I

Defect Bottom Hold: Connected to VPB pin 19 via a capacitor.

V165

36

O

1.65V servo block reference voltage output.

PI

38

O

Pull-In Signal Out: The summing signal output of A, B, C, D, or CD_A, 
CD_B, CD_C, or CD_D. Reference to V25/3.

TE

39

O

Tracking error output reference to V125 pin 36.

FE

40

O

Focusing error output reference to V125 pin 36.

MNTR

42

O

Monitor out signal. Output is selectable by register settings.

V33

45

P

3.3V output buffers power supply.

SCLK

46

I

Serial clock from Vibratto-II.

SDATA

47

I/O

Serial data I/O.

SDEN

48

I

Serial date enable. Enabled By an active-high signal.

RX

49

I

Reference resistor. Connected to ground via a 12,0k

Ω, 1% resistor.