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– 17 –

Tape speed Adjustment

– SET UPPER VIEW –

RV1 AM Auto Scan/Stop Level Adjustment

RV2 FM Auto Scan/Stop Level Adjustment

RV4 FM Stereo Separation Adjustment

TU11

RV261

RV251

(R-CH)

(L-CH)

Dolby

Level

Adjustment

R-CH
L-CH

— SET BOTTOM VIEW —

TP (DOLBY)
Dolby
Level
Adjustment

– 18 –

•

µ

1

TUNON

O

Tuner system power supply on/off control signal output to the BA3918 (IC601)    “H”: tuner on

2

FM ON

O

FM system power supply on/off control signal output to the BA3918 (IC601)    “H”: FM on

3 to 8

NCO

O

Not used (open)

9

VSS

—

Ground terminal

10 to 23

NCO

O

Not used (open)

24

VSS

—

Ground terminal

25 to 32

NCO

O

Not used (open)

33

TUNMUT

O

FM and AM signal muting on/off control output    “H”: muting on

34

RAMBU

I

35

RESET

I

System reset signal input from the system controller (IC501), reset signal generator (IC551) and
reset switch (S551)       “L” is input for several 100 msec after power on, then it changes to “H”

36

NCO

O

Not used (open)

37

BU IN

I

Battery detect signal input from the SONY bus interface (IC571) and battery check circuit
“H”: battery on

38

NCO

O

Not used (open)

39

BUSON

I

Bus on/off control signal input from the system controller (IC501) (for SONY bus)
“L”: bus on

40

VDD

—

Power supply terminal (+5V)

41

OSCOUT

O

Main system clock output terminal (8 MHz)

42

OSCIN

I

Main system clock input terminal (8 MHz)

43

GND

—

Ground terminal

44

XT OUT

O

Sub system clock output terminal    Not used (pull down)

45

XT IN

I

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

46

AVSS

—

Ground terminal (for A/D converter)

47

VSM

I

FM and AM signal meter voltage detection input from the FM/AM tuner unit (TU11)

48

DSTSEL1

I

Destination setting terminal (fixed at “L”)

49

DSTSEL0

I

Destination setting terminal (fixed at “H”)

50

SD IN

I

Station detector detect input from the FM/AM tuner unit (TU11)
Stop level for SEEK, BTM, etc. is determined    SD is present at input of “H”

51

ST MONO

I/O

52 to 54

NIL

I

Not used (fixed at “L”)

55

AVDD

—

Power supply terminal (+5V) (for A/D converter)

56

AVREF

I

Reference voltage input terminal (+5V) (for A/D converter)

57

PLL SI

I

PLL serial data input from the FM/AM PLL (IC91)

58

PLL SO

O

PLL serial data output to the FM/AM PLL (IC91)

59

PLLCKO

O

PLL serial data transfer clock signal output to the FM/AM PLL (IC91)

60

PLLCE

O

PLL serial chip enable output to the FM/AM PLL (IC91)

61

LINKOFF

O

Unilink on/off control signal output (for SONY bus)    “L”: link off

62

UNISI

I

Serial data input from the SONY bus interface (IC571)

63

UNISO

O

Serial data output to the SONY bus interface (IC571)

64

UNICKI

I

Serial data reading clock signal input from the system controller (IC501) (for SONY bus)

Input of FM stereo detection signal from FM/AM tuner unit (TU11), and output of forced
monaural control signal to FM/AM tuner unit (TU11)  (Commonly used for stereo display input
and forced monaural output)
FM stereo detection at input of “L”, forced monaural at output of “L”

Internal RAM reset detection signal input from the RN5VD23AA (IC552)
Input terminal to check that RAM data are not destroyed due to low voltage
This checking is made within 100 msec after reset

– 19 –

•

µ

1

RC IN0

I

Rotary remote commander shift key A/D input terminal

2

ILL.IN

I

Dimmer detection signal input    Dimmer is present at input of “L”

3

NIL

I

Not used (fixed at “L”)

4

AVSS

—

Ground terminal (for A/D converter)

5

LCDANG

O

Output signal for the LCD view angle adjustment

6

NIL

I

Not used (fixed at “L”)

7

AVREF1

I

Reference voltage (+5V) input terminal (for D/A converter)

8

RE IN0

I

Rotary encoder (RE701) input terminal

9

RE IN1

I

Rotary encoder (RE701) input terminal

10

SUB-CONT1

O

Sub-woofer control signal output

11

SUB-CONT2

O

Sub-woofer control signal output

12

LCDSO

O

Serial data output to the liquid crystal display driver (IC701)

13

LCDCKO

O

Serial data transfer clock signal output to the liquid crystal display driver (IC701)

14

LCDCE

O

Chip enable output to the liquid crystal display driver (IC701)

15

LCDINH

O

Blank indicate control signal output to the liquid crystal display driver (IC701)
“L”: no display

16

UNISI

I

Serial data input from the SONY bus interface (IC571)

17

UNISO

O

Serial data output to the SONY bus interface (IC571)

18

UNICKI

I

Serial data reading clock signal input terminal (for SONY bus)

19

UNICKO

O

Serial data transfer clock signal output to the tuner controller (IC101) and SONY bus interface
(IC571)

20

BUSON

O

Bus on/off control signal output to the tuner controller (IC101) and SONY bus interface (IC571)
“L”: bus on

21

SYSRST

O

Reset signal output to the tuner controller (IC101) and SONY bus interface (IC571)    “L”: reset

22

AMPON

O

Standby control signal output to the power amplifier (IC701)    “L”: standby

23

—

—

Not used (open)

24

NCO

O

Not used (open)

25

PW ON

O

Main system power supply on/off control signal output to the BA3918 (IC601)    “H”: power on

26

ILLON

O

27

COLOR

O

Illumination color selection signal output    “H”: amber, “L”: green

28

AMSON

O

Tape auto music sensor control signal output to the CXA2511AQ (IC231)
“L” is output to lower the gain for audio level at FF/REW

29

REL

I

Reel table rotation detect signal input from the take-up and supply reel sensor

30

MTLIN

I

Auto METAL detect signal input from the METAL detect switch on the mechanism block

31

POS3

I

32

POS2

I

33

GND

—

Ground terminal

34

POS0

I

35

POS1

I

36

LM LOD

O

Loading/tape operation motor control signal output to the LB1638M (IC201)
(For the loading direction and forward side operation)    *1

37

LM EJ

O

Loading/tape operation motor control signal output to the LB1638M (IC201)
(For the eject direction and reverse side operation)    *1

Tape position detect input from the tape operation switch on the mechanism block

Tape position detect input from the tape operation switch on the mechanism block

Power supply on/off control signal output terminal at the illumination and liquid crystal display
driver (IC701)    “H”: power on
At power select switch (S501) on mode: “H” output at the accessory on
At power select switch (S501) off mode: “H” output at the power on

– 20 –

38

N/R OUT

O

Forward/reverse direction control signal output to the CXA2511AQ (IC231)
“H: forward direction, “L”: reverse direction

39

MTLON

O

METAL on/off control signal output to the CXA2511AQ (IC231)    “H”: METAL on

40

CM ON

O

Capstan/reel motor (M901) drive signal output terminal    “H”: motor on

41

TAPON

O

Tape system power supply on/off control signal output terminal    “H”: tape on

42

PW SEL

I

Power select switch (S501) input terminal    “L”: off (halt mode), “H”: on (operation mode)

43

RC IN1

I

Rotary remote commander shift key A/D input terminal

44

TEST

I

Setting terminal for the test mode    “L”: test mode (normally fixed at “H”)

45

EQSEL

I

Equalizer selection input terminal (fixed at “H”)

46

BEEP

O

Beep sound drive signal output terminal

47

MUT

O

Muting control signal output to the line muting circuit and power amplifier (IC701)
“H”: muting on

48

VOLCE

O

Chip enable signal output to the main electrical volume (IC301)

49

SUBCE

O

Chip enable signal output to the sub electrical volume (IC382)

50

VOLCKO

O

Serial data transfer clock signal output to the main electrical volume (IC301)

51

SUBCKO

O

Serial data transfer clock signal output to the sub electrical volume (IC382)

52

VOLSO

O

Serial data output to the main electrical volume (IC301) and sub electrical volume (IC382)

53

TAPMUT

O

Tape muting on/off control signal output to the CXA2511AQ (IC231)    “H”: tape muting on

54

DOLON

O

Dolby on/off control signal output to the CXA2511AQ (IC231)    “H”: dolby on

55

DOLBC

I/O

56

AMSIN

I

Whether a music is present or not from CXA2511AQ (IC231) is detected at auto music sensor
“L”: music is present, “H”: music is not present

57

DIMMER

O

Dimmer control signal output terminal

58

AD ON

O

Power supply on/off control signal output for the A/D converter    “L”: power on

59

TIRIND

O

LED drive signal output for the TIR indicator    “L”: LED on    Not used (open)

60

RESET

I

System reset signal input from the reset signal generator (IC551) and reset switch (S551)
“L” is input for several 100 msec after power on, then it changes to “H”

61

SIRCS

I

Sircs signal input from the remote control receiver (IC702)

62

BU IN

I

Battery detect signal input from the SONY bus interface (IC571) and battery check circuit
“H”: battery on

63

DOORSW

I

Door open/close detect input    “L”: door close

64

ACCIN

I

Accessory detect signal input terminal    “L”: accessory on

65

NOSESW

I

Detects the removal of the attaching and removing type front panel block    “L”: attaching

66

TELMUT

I

Telephone muting signal input terminal    At input of “L”, the signal is attenuated by –20 dB

67

KEYACK

I

Input of acknowledge signal for the key entry    Acknowledge signal is input to accept function
and eject keys in the power off status    On at input of “L”

68

VDD

—

Power supply terminal (+5V)

69

X OUT

O

Main system clock output terminal (5 MHz)

70

X IN

I

Main system clock input terminal (5 MHz)

71

GND

—

Ground terminal

72

XT OUT

O

Sub system clock output terminal (32.768 kHz)

73

XT IN

I

Sub system clock input terminal (32.768 kHz)

74

AVDD

—

Power supply terminal (+5V) (for A/D converter)

75

AVREF0

I

Reference voltage input terminal (+5V) (for A/D converter)

Dolby B/C selection control in/out terminal
At initial mode: dolby B only/dolby B and C type selection input (“L” input: dolby B and C)
At normal mode: dolby type selection signal output to the CXA2511AQ (IC231)
“L”: dolby B, “H”: dolby C