Sony MZ-E80, Service Manual

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 MAIN BOARD   IC801   RU6915MF-0001 (SYSTEM CONTROLLER)

Pin No.

Pin Name

I/O

Description

1

THOLD

I

Two shaft device tracking coil-end voltage monitor input terminal (A/D input)

2

UREG MON

I

Un-regulator power supply voltage monitor input terminal (A/D input)

3

VC MON

I

VC (middle point voltage) power supply voltage monitor input terminal (A/D input)

4

VREF

I

Input terminal for power supply voltage adjustment reference voltage (+2V) (A/D input)

5

PLAY KEY

I

Not used (fixed at “H”)

6

OPEN CLS SW

I

Upper panel open/close detect switch (S801) input terminal (A/D input)
“L”: upper panel close, “H”: upper panel open

7

RMC KEY

I

Remote commander with headphone key input terminal (A/D input) 

8

SET KEY

I

Set key input terminal (A/D input)    S804 to S808 (

p

, 

+

 /

(

, 

=

, +/–VOLUME keys input)

9

XRESET

I

System reset signal input from the MPC1830ADTB (IC901)    “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”

10

AVDD

—

Power supply terminal (+2.4V) (for A/D converter)

11

AVSS

—

Ground terminal (for A/D converter)

12 to15

TYPE0 to 

TYPE3

I

Setting terminal for model discrimination (bit0 to bit3)    Fixed at “L” in this set

16

XOUT

O

Main system clock output terminal (16.9344 MHz)

17

XIN

I

Main system clock input terminal (16.9344 MHz)

18

SXOUT

O

Sub system clock output terminal    Not used (open) 

19

SXIN

I

Sub system clock input terminal    Not used (fixed at “L”)

20

COUT

O

Not used (open)

21

VDD

—

Power supply terminal (+2V) (digital system)

22

VSS

—

Ground terminal (digital system)

23

HOLD SW

I

HOLD switch (S802) input terminal    “L”: hold off, “H”: hold on

24

XRFSW

O

Standby control signal output to the CXA2523ATQ (IC501)    “L”: standby

25, 26

NC

—

Not used (open)

27

SQSY

I

Subcode Q sync (SCOR) input from the CXD2663GA (IC601)
“L” is input every 13.3 msec    Almost all, “H” is input

28

XINT

I

Interrupt status input from the CXD2663GA (IC601) 

29, 30

DBB0, DBB1

I

DIGITAL MEGABASS switch (S301) input terminal    *1

31

OPR LED

O

OPERATE LED (D801) drive signal output terminal    “H”: LED on

32

NC

—

Not used (open)

33

ADJUST

I

Setting terminal for the test mode    “L”: test mode, Normally: fixed at “H”

34

RMC VCON

O

Remote commander power supply voltage select signal output to the DC/DC converter circuit

35

SBUS CLK

O

SBB serial clock signal output terminal    Not used (open)

36

SBUS DATA

I/O

SBB serial data input/output terminal    Not used (open)

37

LD ON

O

Laser diode on/off control signal output to the automatic power control circuit
“L”: laser off, “H”: laser on

38

SLD 1 MON

I

Sled servo timing signal input from the MPC17A55VF (IC551)

39

SLD 2 MON

I

Sled servo timing signal input from the MPC17A55VF (IC551)

40

AVDD

—

Power supply terminal (analog system)    Not used (open) 

41

VPP

—

Test terminal (fixed at “L”)

42

CLV VCON

O

Spindle servo drive voltage control signal output to the MPC17A55VF (IC551)

43

APC REF

O

Laser power control signal output terminal    Not used (open) 

44

V28 CON

O

Power supply voltage adjustment PWM signal output to the MPC1830ADTB (IC901)

45

CLV U MON

I

Spindle servo (U) timing signal input from the MPC17A55VF (IC551)