CDP-CX57 - Sony Audio Service Manual (repair manual). Page 41

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1

DEFI

I

Defect detection signal input from the RF amplifier (IC101)

2

TAI

I

PLL test input terminal    Not used (fixed at “L”)

3

PDO

O

PLL phase comparison output for external VCO control

4

VVSS

—

Ground terminal (internal VCO system)

5

ISET

I

Connected to a current adjusting resistor for the PDO output

6

VVDD

—

Power supply terminal (+5V) (internal VCO system)

7

FR

I

Adjusts the VCO frequency range

8

VSS

—

Ground terminal (digital system)

9

EFMO

O

Slice level control to EFM signal output

10

EFMIN

I

Playback EFM RF signal input from the RF amplifier (IC101)

11

TEST2

I

Test input terminal (fixed at “L” in this set)

12

CLV+

O

13

CLV–

O

14

V/P

O

Sled servo on/off control signal output to the RF amplifier (IC101)    Rough servo/phase control 
automatic switching monitor output     “H”: rough servo, “L”: phase servo

15

HFL

I

Tracking detection signal input from the RF amplifier (IC101) (Schmitt input)    HFL (High 
Frequency Level) is used to determine whether the main beam is positioned on a pit or mirror

16

TES

I

Tracking error signal input from the RF amplifier (IC101) (schmitt input)

17

TOFF

O

Tracking off control signal output to the RF amplifier (IC101)                                                           
Tracking becomes off when TOFF is “H”

18

TGL

O

Tracking gain control signal output to the RF amplifier (IC101)  (Raises gain when “L”)

19

JP+

O

20

JP–

O

21

PCK

O

EFM data playback clock monitor output terminal (4.3218 MHz when phase is locked)

22

FSEQ

O

Sync signal detection output terminal (“H” when a sync signal detected from the EFM signal and 
that generated internally coincide)

23

VDD

—

Power supply terminal (+5V) (digital system)

24

CONT1

I

Guard frame sync input terminal

25

CONT2

I

Sled servo on/off control signal input terminal

26

CONT3

O

Sled servo drive control signal output terminal

27

CONT4

I

Sled limit-in detect switch (S101) input terminal    The optical pick-up is inner position when “L”

28

CONT5

O

Not used (open)

29

EMPH

O

De-emphasis control signal output terminal                                                                                         
The de-emphasis disc is being played back when “H”    Not used (open)

30

C2F

O

C2PO (error condition monitor) signal output terminal

31

DOUT

O

Digital signal output terminal (EIAJ format)

32

TEST3

I

Test input terminal (fixed at “L” in this set)

33

TEST4

I

Test input terminal (fixed at “L” in this set)

34

NC

—

Not used (open)

35

MUTEL

O

Line muting on/off control signal output terminal (for L-ch side)    “H”: muting on

36

LVDD

—

Power supply terminal (+5V) (L-ch D/A converter system)

37

LCHO

O

Analog audio signal output from the internal D/A converter block (for L-ch side)

38

LVSS

—

Ground terminal (L-ch D/A converter system)

39

RVSS

—

Ground terminal (R-ch D/A converter system)

40

RCHO

O

Analog audio signal output from the internal D/A converter block (for R-ch side)

41

RVDD

—

Power supply terminal (+5V) (R-ch D/A converter system)

Disc motor control signal output to the RF amplifier (IC101)
(3-value output available depending on the command)

Track jump control signal output to the RF amplifier (IC101)
(3-value output available depending on the command)