Kenwood KDC 133 Service Manual

Page 5

KDC-1032/132/132CR
KDC-133/233/234SGY

MICROCOMPUTERS TERMINAL DESCRIPTION

Pin No. Pin Name l/O Application Truth valuetaltle Processing Operation Description
20 NC - Not used (output L)
H: Normal, L: FM/AM seek and AF search
21 AFS O Constant switching for noise
(L for Tuner SRC Auto Zero)
22~25 NC - Not used (output L)
26 TYPE REF 0 5V output for destination setting H: When reading destination
27 SD | Tuner SD input H: Staion tound
28 NC - Not used (output L)
29 TYPEZ I Destination 2 (D
30 TYPE1 | Destination 1 (T
31 TYPEO I Destination 0 (i)
32 TUNER-TYPE1 | E-VOL setting switching H: OEM model 1, L: KENWOOD brand model
33 VSS1 -
34 TUNER-TYPEt | E-VOL setting switching H: OEM model 0, L: KENWOOD brand model
H: Mute ON, L: Mute OFF
35 MUTE O Mute (E-Vol/Pre) control
L in 15 seconds after Power OFF
36 M-DATA I/O CD mechanism communication data H for no communication
37 M-CLK 0 CD mechanism communication clock H for no communication
When ADJ=H, PS1-O,1=L, PS1-2,2-0,1=Hi-z
38 ADJ 0 Tuner line adjustment
|C10-DATA, CLK=Hi-z
L: Mute OFF, L: Mute ON
39 P-MUTE 0 Power IC mute control
H in 15 seconds after Power OFF
40 SVR 0 Power IC SVR control H: When reduction oi power is detected, L: Normal
41 P-STBY 0 Power IC STBY control H: Power IC ON, L: Power IC OFF
7 H: SW5V OFF, L: SW5V ON
42 SW5V O SW5V control
H in 10 seconds after Power OFF
43 B.U-DET | Back Up detection H: Reduction of power, L: BU found
44 ACC-DET | ACC detection H: ACC OFF, L: ACC ON
Power IC SW1 control 0
45 PS1-0 O
(AUDIOBV/P-CON)
Power IC SW1 control 1
46 PS1-1 O
(AUDIOBV/P-CON)
47 PS1-2 0 Power IC SW1 control 2 (P-ANT)
48 PSZ-O 0 Power IC SW2 control 0 (ILLUMI/FM/AM)
49 P82-1 0 Power IO SW2 control 1 (ILLUMI/FM/AM)
50 BEEP O Beep
51 ENG CCW | Rotary encoder input
52 ENC CW | Rotary encoder input
53 DSI O DSI control
54 LOE/LIM SW | CD mechanism Down & Limit detection H: Chucking detection, L: Normal
55 MO SW 0 CD mechanism motor switching SW H: Loading/Eject/Break, L: Play