Sony MZ-B100 - Minidisc Business Product Recorder, Service Manual

24

MZ-B100

Pin No.

Pin name

I/O

Description

1

TE

O

Tracking error signal output to IC801

2

REXT

—

Connected to the external resistor for the ADIP amplifier control

3

WPPLPF

—

Connected to the external capacitor for low-pass filter of the TPP/WPP

4

VREF11

O

Reference voltage output terminal (+1.1V)

5

C

I

Signal input from the optical pick-up detector (C)

6

D

I

Signal input from the optical pick-up detector (D)

7

D-C

I

Signal input from the optical pick-up detector (D) (AC input)

8

IY

I

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

9

IX

I

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

10

JX

I

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

11

JY

I

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

12

A

I

Signal input from the optical pick-up detector (A)

13

A-C

I

Signal input from the optical pick-up detector (A) (AC input)

14

B

I

Signal input from the optical pick-up detector (B)

15

TON-C

—

Connected to the external capacitor for the TON hold

16

CIG

—

Connected to the external capacitor for low-pass filter of the NPP divider denominator

17

CDN

—

Connected to the external capacitor for low-pass filter of the CSL divider denominator

18

PD-NI

I

Light amount monitor input terminal (non-invert input)

19

PD-I

I

Light amount monitor input terminal (invert input)

20

PD-O

O

Light amount monitor output terminal

21

ADFG

O

ADIP duplex FM signal (22.05 kHz 

±

 1 kHz) output to IC801

22

DVDD

—

Power supply terminal (+2.4V) (digital system)

23

SBUS

I/O

Two-way SSB serial data bus 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  IC801

27

DGND

—

Ground terminal (digital system)

28

BOTM

O

Light amount signal (RF/ABCD) bottom hold output to IC801

29

PEAK

O

Light amount signal (RF/ABCD) peak hold output to IC801

30

VREF075

—

Connected to the external capacitor for the internal reference voltage

31

VC

O

Middle point voltage (+1.2V) generation output terminal

32

CCSL2

—

Connected to the external capacitor for low-pass filter of the TPP/WPP

33

RF OUT

O

Playback EFM RF signal output to IC801

34

AGND

—

Ground terminal (analog system)

35

EQ

—

Connected to the external capacitor for the RF equalizer

36

LP

—

Connected to the external capacitor for the RF equalizer

37

PS

—

Connected to the external capacitor for the RF equalizer

38

OFC-2

—

Connected to the external capacitor for the RF AC coupling

39

OFC-1

—

Connected to the external capacitor for the RF AC coupling

40

AVCC

—

Power supply terminal (+2.4V) (analog system)

41

ABCD

O

Light amount signal (ABCD) output to IC801

42

FE

O

Focus error signal output to 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    Not used

SECTION 6

DIAGRAMS

6-1. EXPLANATION OF IC TERMINALS

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