MZ-G750/R700

SECTION 6

DIAGRAMS

6-1. IC PIN FUNCTION DESCRIPTION

• IC501 SN761057DBT (RF AMP, FOCUS/TRACKING ERROR AMP)

Pin No.

Pin Name

I/O

Description

 

 

 

 

1

TE

O

Tracking error signal output to the system controller (IC801)

 

 

 

 

2

REXT

—

Connect terminal to the external resistor for ADIP amp control

 

 

 

 

3

WPPLPF

—

Connect terminal to the external capacitor for TPP/WPP low-pass filter

 

 

 

 

4

VREF

O

Reference voltage output terminal (+1 V)

 

 

 

 

5

C

I

Signal (C) input from the optical pickup detector

 

 

 

 

6

D

I

Signal (D) input from the optical pickup detector

 

 

 

 

7

D-C

I

Signal (D) input from the optical pickup detector (AC input)

 

 

 

 

8

IY

I

I-V converted RF signal (IY) input from the optical pickup detector

 

 

 

 

9

IX

I

I-V converted RF signal (IX) input from the optical pickup detector

 

 

 

 

10

JX

I

I-V converted RF signal (JX) input from the optical pickup detector

 

 

 

 

11

JY

I

I-V converted RF signal (JY) input from the optical pickup detector

 

 

 

 

12

A

I

Signal (A) input from the optical pickup detector

 

 

 

 

13

A-C

I

Signal (A) input from the optical pickup detector (AC input)

 

 

 

 

14

B

I

Signal (B) input from the optical pickup detector

 

 

 

 

15

TON-C

—

Connect terminal to the external capacitor for TON hold

 

 

 

 

16

CIG

—

Connect terminal to the external capacitor for the low-pass filter of NPP divider

denominator

 

 

 

 

 

 

 

17

CDN

—

Connect terminal to the external capacitor for the low-pass filter of CSL divider

denominator

 

 

 

 

 

 

 

18

PD-I

I

Light amount monitor input terminal (invert input)

 

 

 

 

19

PD-NI

I

Light amount monitor input terminal (non-invert input)

 

 

 

 

20

PD-O

O

Light amount monitor output terminal

 

 

 

 

21

ADIP

O

ADIP duplex FM signal (22.05 kHz ± 1 kHz) output to the system controller (IC801)

 

 

 

 

22

DVDD

—

Power supply terminal (+2.3 V) (digital system)

 

 

 

 

23

SBUS

I/O

SSB serial data input/output with the system controller (IC801)

 

 

 

 

24

SCK

I

SSB serial clock signal input from the system controller (IC801)

 

 

 

 

25

XRST

I

Reset signal input from the system controller (IC801) “L”: reset

 

 

 

 

26

OFTRK

I

Off track signal input from the system controller (IC801)

 

 

 

 

27

DGND

—

Ground terminal (digital system)

 

 

 

 

28

BOTM

O

Bottom hold signal output of the light amount signal (RF/ABCD) to the system

controller (IC801)

 

 

 

 

 

 

 

29

PEAK

O

Peak hold signal output of the light amount signal (RF/ABCD) to the system

controller (IC801)

 

 

 

 

 

 

 

30

VREF075

—

Connect terminal to the external capacitor for the internal reference voltage

 

 

 

 

31

VC

O

Middle point voltage (+1.2 V) generation output terminal

 

 

 

 

32

CCSL2

—

Connect terminal to the external capacitor for TPP/WPP low-pass filter

 

 

 

 

33

RF OUT

O

Playback EFM RF signal output to the system controller (IC801)

 

 

 

 

34

AGND

—

Ground terminal (analog system)

 

 

 

 

35 – 37

EQ, LP, PS

—

Connect terminal to the external capacitor for the RF equalizer

 

 

 

 

38

AVCC

—

Power supply terminal (analog system) (+2.3 V)

 

 

 

 

39, 40

OFC-2, OFC-1

—

Connect terminal to the external capacitor for RF AC coupling

 

 

 

 

41

ABCD

O

Light amount signal (ABCD) output to the system controller (IC801)

 

 

 

 

42

FE

O

Focus error signal output to the system controller (IC801)

 

 

 

 

43

S-MON

O

Servo signal monitor output to the system controller (IC801)

 

 

 

 

44

ADIP-IN

I

ADIP duplex FM signal (22.05 kHz ± 1 kHz) input terminal

 

 

 

 

29

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Image 29
Sony MZ-R700 service manual Section Diagrams, IC PIN Function Description
Page 28 Page 30

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