•SERVO BOARD IC302 CXA2523AR (RF AMP, FOCUS/TRACKING ERROR AMP)

Pin No.

Pin Name

I/O

 

 

Description

 

 

 

 

 

1

 

I

I

I-V converted RF signal I input from the optical pick-up block detector

 

 

 

 

 

2

 

J

I

I-V converted RF signal J input from the optical pick-up block detector

 

 

 

 

 

3

 

VC

O

Middle point voltage (+1.65V) generation output terminal

 

 

 

 

 

4 to 9

 

A to F

I

Signal input from the optical pick-up detector

 

 

 

 

 

10

 

PD

I

Light amount monitor input from the optical pick-up block laser diode

11

 

APC

O

Laser amplifier output terminal to the automatic power control circuit

12

APCREF

I

Reference voltage input terminal for setting laser power

13

 

GND

—

Ground terminal

 

 

 

 

 

 

 

 

14

TEMPI

I

Connected to the temperature sensor

Not used (open)

 

 

 

 

 

15

TEMPR

O

Output terminal for a temperature sensor reference voltage Not used (open)

 

 

 

 

 

16

SWDT

I

Writing serial data input from the MD mechanism controller (IC501)

 

 

 

 

 

17

 

SCLK

I

Serial data transfer clock signal input from the MD mechanism controller (IC501)

18

 

XLAT

I

Serial data latch pulse signal input from the MD mechanism controller (IC501)

19

XSTBY

I

Standby signal input terminal “L”: standby (fixed at “H” in this set)

 

 

 

 

 

20

F0CNT

I

Center frequency control voltage input terminal of internal circuit (BPF22, BPF3T, EQ) input

terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

 

21

 

VREF

O

Reference voltage output terminal

Not used (open)

 

 

 

 

22

EQADJ

I

Center frequency setting terminal for the internal circuit (EQ)

 

 

 

 

23

3TADJ

I

Center frequency setting terminal for the internal circuit (BPF3T)

24

 

VCC

—

Power supply terminal (+3.3V)

 

 

25

WBLADJ

I

Center frequency setting terminal for the internal circuit (BPF22)

 

 

 

 

 

26

 

TE

O

Tracking error signal output to the CXD2652AR (IC301)

 

 

 

 

27

CSLED

I

Connected to the external capacitor for low-pass filter of the sled error signal

 

 

 

 

 

28

 

SE

O

Sled error signal output to the CXD2652AR (IC301)

 

 

 

 

 

 

29

ADFM

O

FM signal output of the ADIP

 

 

30

 

ADIN

I

Receives a ADIP FM signal in AC coupling

31

ADAGC

I

Connected to the external capacitor for ADIP AGC

 

 

 

 

 

32

ADFG

O

ADIP duplex signal (22.05 kHz ±

1 kHz) output to the CXD2652AR (IC301)

 

 

 

 

 

33

 

AUX

O

Auxiliary signal (I3 signal/temperature signal) output terminal Not used (open)

 

 

 

 

 

34

 

FE

O

Focus error signal output to the CXD2652AR (IC301)

 

 

 

 

35

ABCD

O

Light amount signal (ABCD) output to the CXD2652AR (IC301)

36

BOTM

O

Light amount signal (RF/ABCD) bottom hold output to the CXD2652AR (IC301)

37

 

PEAK

O

Light amount signal (RF/ABCD) peak hold output to the CXD2652AR (IC301)

 

 

 

 

 

38

 

RF

O

Playback EFM RF signal output to the CXD2652AR (IC301)

 

 

 

 

39

RFAGC

I

Connected to the external capacitor for RF auto gain control circuit

 

 

 

 

 

40

 

AGCI

I

Receives a RF signal in AC coupling

 

 

 

 

 

41

COMPO

O

User comparator output terminal

Not used (open)

42

COMPP

I

User comparator input terminal

Not used (fixed at “L”)

43

ADDC

I

Connected to the external capacitor for cutting the low band of the ADIP amplifier

 

 

 

 

 

44

 

OPO

O

User operational amplifier output terminal Not used (open)

45

 

OPN

I

User operational amplifier inversion input terminal Not used (fixed at “L”)

 

 

 

 

 

 

 

46

 

RFO

O

RF signal output terminal

 

 

 

 

 

 

47

MORFI

I

Receives a MO RF signal in AC coupling

48

MORFO

O

MO RF signal output terminal

 

 

43

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Image 43
Sony MDX-C6500RX service manual Xstby, Vref, Vcc, Wbladj, Csled, Rfagc
Page 42 Page 44

MDX-C6500R, MDX-C6500RX specifications

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