Kenwood KDC-1022 Service Manual page 4

KDC-1022/122P
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MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
Pin No. Name
7 AVREF1
8 NC
9 IC10-DATA
10 IC10-CLK
11 L-DATAL
12 L-DATAS
13 L-CLK
14 R-DATA
15 R-QUAL
16 CH-DATAC
17 CH-DATAH
18 CH-CLK
19 CH-REQH
20 NC
21 AFS
TE
L 13942296513
22~24 NC
25 CH-CONT
26 TYPE REF
27 SD
28 NC
29 TYPE2
30 TYPE1
31 TYPE0
32 TUNER-TYPE1
33 Vss1
34 TUNER-TYPE0
35 MUTE
36 M-DATA
37 M-CLK
38 ADJ
39 P-MUTE
40 SVR
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41 P-STBY
42 SW5V
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43 B.U-DET
44 ACC-DET
4
I/O Description
Not used (connected to 9pin)
I/O IC10, E2PROM data communication
O IC10, E2PROM clock communication
I Data input from the LCD driver
O Data output to the LCD driver
O Clock output to the LCD driver
I Data input from the RDS
I Quality input from the RDS
I Data input from the changer (new 5L)
O Data output to the changer (new 5L)
I/O Clock input/output with the changer (new 5L)
O Request output to the changer (new 5L)
O Not used (output L)
O Noise detection time constant switching terminal
O Not used (output L)
O Changer control
O 5V lines output for destination setting
I Tuner SD input
O Not used (output L)
I Destination type selection terminal 2
I Destination type selection terminal 1
I Destination type selection terminal 0
I Destination available/genuine model rool off
I Destination available/genuine model noise cancel
O Mute (E.Vol, Preset) control
I/O Data input/output with the CD mechanism
O Clock output to the CD mechanism
O Tuner lines adjustment
O Power IC mute control
O Power IC servo control
O Power IC standby control
x ao
y
O SW 5V control
i
I Back up detection terminal
I ACC detection terminal
8
∆3 non communication : H
∆3 non communication : H
Non communication : H, When panel detached : L
∆3 Pull down on X25 unit, Pull up on X16 unit
When panel detached, output L
When panel detached, output L
Except RDS model : output L
Except RDS model : output L
Except changer model : output L
When non communication, last data keeping
Except changer model : output L
Check the old and new
Except changer model : output L
L : Requset
Except changer model : output L
H : Normal, L : FM/AM seek and AF search
∆3 (When tuner SRC auto zero, L)
Q Q
3 6 7 1 3
H : Changer on, L : Changer off
Except changer model : output L
H : During destination reading
H : Station detected
Refer to destination type list.
Refer to destination type list.
Refer to destination type list.
H : genuine model 1, L : available model
H : genuine model 0, L : available model
H : mute on, L : mute off
Power off after that 15 second L
∆3 non communication : H
∆3 non communication : H
When adjustment = H
PS1-0, 1=L PS1-2, 2-0, 1=Hi-z IC10-DATA, CLK=Hi-z
H : mute off, L : mute on
Power off after that 15 second H
H : When momentary power down detected, L : Nomal
H : Power IC ON, L : Power IC OFF
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H : SW5V OFF, L : SW5V ON
Power off after that 10 second H
.
H : power down, L : B.U. on
H : ACC OFF, L : ACC ON
2 9 9 4 2 8
Processing Operation
1 5 0 5 8 2 9 9 4
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9 9
2 8 9 9