Kenwood KDC-MP202, Service Manual

5

KDC-MP202/MP333

KDC-MP333RC/MP433

Pin No.

Pin Name

I/O

Application

Truth Value

Processing / Operation / Description

Table

18

CN DET

I

Panel communication detection

H: Without PANEL, L: With PANEL

19

NC

-

Not used

Fix to output L

20

KEY REQ

I

Communication request form VFD driver

Connect to INT

21

PON FL

O

Key illumi power supply control

ON: H, OFF: L

22

DSI

I/O

DSI control

OFF: Hi-z PANEL detached, Pulse drive ON: H

23

PON PANEL

I/O

Panel 5V control

ON: L, Momentary power down, when PANEL detached,

11 minutes after ACC OFF: Hi-z

24~27

NC

-

Not used

Fix to output L

28

PWIC BEEP

O

Beep output

29

CD SCL

I/O

CD mechanism I2C clock output

30

CD SDA

I/O

CD mechanism I2C data input/output

31

VFD SYS DATA

O

VFD data output

Data output

32

VFD PAN DATA

I

VFDINT/data input

INT/data input

33

VFD CL

O

VFD clock output

52kHz

34

VFD INH

O

VFD data blanking output

H: Cancel reset, L: RESET, L: Momentary power down,

when PANEL detached, 11 minutes after ACC OFF

35

AUD SDA

I/O

IC10 I2C data input/output

36

AUD SCL

I/O

IC10 I2C clock input/output

37

CD MUTE

I

CD MUTE request

L: MUTE request

38

CD MSTOP

O

CD mechanism 

µ

-com stop

H: Mechanism 

µ

-com in operation, L: Mechanism 

µ

-com stopped

39

CD LOE LIM SW

I

CD detection (chucking SW)

H: Loading completed, L: Disc not found

40

CD LOEJ

I/O

CD motor control

w

Refer to the truth value table

41

EPM

I

FLASH EPM input

L: Can be changed (Only for FLASH). Connect to VSS (pull down)

42

CD MOTOR

O

CD motor control

w

Refer to the truth value table

43

CD DISC8 SW

I

CD disc detection (8cm)

44

CD MRST

O

CD mechanism 

µ

-com RST

H: Normal, L: Reset

45

CD DISC12 SW

I

CD disc detection (12cm)

46

VFD CE

O

VFD control request

47

CD LOS SW

I

CD loading detection

48,49

NC

-

Not used

Fix to output L

50

ROTARY CW

I

VOL key input

Detect pulse width

51

NC

-

Not used

Fix to output L

52

ROTARY CCW

I

VOL key input

Detect pulse width

53~56

NC

-

Not used

Fix to output L

57

RDS AFS L

O

TUN RDS MUTE output

H: Normal

L: FM/AM SEEK, AF search (L: When Tuner SRC Auto Zero)

58

TUN ADJ

I

For IC10 adju

When ADJ=H, PS1-1,2,3=Hi-z, PS2-1,2=Hi-z,

E2PROM write request

TUN DATA, CLK=Hi-z, MUTE=L, E2PROM writing-in

59

TUN SD

I

TUN search stop input

H: Station found, L: Station not found

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