Kenwood KDC-237SA Service Manual page 7

MICROCOMPUTER'S TERMINAL DESCRIPTION
Pin No. Pin Name I/O
96 AVSS -
97 REF CON O
98 VREF -
99 AVCC -
100 LX DATA S I
• Truth value table
q CD motor control
CD motor
Stop L
Load H
Eject H
Brake H
w AFS control
RDS AFS M
AFS MID L Except AF search, seeking or tuner source
AFS HIGH Hi-Z Normal reception
e Destination switching
TYPE 2 TYPE 1
(Pin 86) (Pin 85)
2.4V 0V
Application
VREF control
Data from slave unit
CD loading/eject
L
L
H
Hi-z
Condition
Model
KDC-237SA/237SAY/237SG/237SGY
KDC-237SA/237SAY
KDC-237SG/237SGY
Truth Value
Processing Operation Description
Table
Connects to VREF
Pull-down (GND)
r Power supply IC (IC4) control
SEL1 (Pin 10)
PS1-2 PS1-3 PS2-1
L L L
L L H
H L H
H H H
SEL2 (Pin 11)
PS1-1 PS2-2 AUDIO/SW5
L L OFF
H L ON
H H ON
ILLUMI P-CON P-ANT
OFF OFF OFF
ON OFF OFF
ON ON OFF
ON ON ON
AM
OFF
OFF
ON
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