Kenwood KDC-8021 Service Manual page 9

MICROCOMPUTER'S TERMINAL DESCRIPTION
SYSTEM MICROCOMPUTER uPD703033AGF-***-3BA (X25)
Pin Name I/O
46 O-CLK I/O
47 O-CE I/O
48 ILL-ON I/O
49 TYPE0 I
50 TYPE1 I
51 TYPE2 I
52 IC2TYPE0 I
53 IC2TYPE1 I
54 N.C O
55 N.C O
56 M-MUTE R I
57 M-MUTE L I
58 BVdd -
59 BVss -
60 M-RST O
61 M-STOP O
62 N.C O
63 CD-SW3 I
64 LO/EJ I/O
65 MOSW O
66 N.C O
67 PAN-RESET O
MC-REQ/
68 I/O
PANEL
69 N.C O
70 PAN5V I/O Panel 5 V control terminal.
71 MASK+B O
72 MASK-B O
73 AVCONT O
Purpose
External display CLK Models without external
terminal. display: Output "L".
External display CE Models without external
terminal. display: Output "L".
FL and ILLUM output
ON:H OFF: Hi-Z
terminal.
Destination type switching
port.
Destination type switching
port.
Destination type switching
port.
IC2 destination type
Default: "L".
terminal.
IC2 destination type
Default: "L".
terminal.
Output Open. Not used.
Output Open. Not used.
Muting request from CD
ON:L
mechanism. (R CH)
Muting request from CD
ON:L
mechanism. (L CH)
Positive power supply
terminal.
GND terminal.
Normal: "H". Reset: "L".
Reset output According to the
to CD mechanism. mechanism control
specification.
Stop request
STOP: L CD: H
to CD mechanism.
Output Open. Not used.
CD Down SW detection
Chucking: "H".
terminal.
CD mechanism Loading/ Stop, braking: "Hi-Z".
Ejection switching. Loading: "L". Ejection: "H".
CD mechanism motor Loading, ejection,
power supply SW. braking: "H".
Output Open. Not used.
Normal: "H". Reset &
Reset output
momentary power
to Panel uCOM.
down: "L".
REQ terminal to Panel
Panel attached: "L".
uCOM/Panel detection.
Output Open. Not used.
Panel attached: "L".
Panel detached: "Hi-Z".
Mask mechanism
sub-motor output terminal.
Mask mechanism
sub-motor output terminal.
AD reference voltage Same timing as P-ON.
control output. During operation: "H"
KDC-8021/M9021/X859
Processing During Processing During
Processing Operation
L
L
Hi-Z
H
L
L
Hi-z
L
Panel attached: "H". Panel attached: "H".
Panel detached: "L". Panel detached: "L".
Hi-z
L
L
L
Non-Operation STBY
L
L
Hi-Z
H
L
L
Hi-Z
L
L
Hi-Z
L
Panel attached: "L".
Detached: "Hi-Z".
L
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