Kenwood KDC-MP632U Service Manual page 7

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MICROCOMPUTER'S TERMINAL DESCRIPTION
3 7 63 1515 0
Pin No. Pin Name
39 EPM
40 PANEL DET
41 NC
42 ROMCOR DET
43 PON FL
44 VFD CS
45 ROTARY CW
46 ROTARY CCW
47 CD DISC12 SW
48 CD LOS SW
49 CD MUTE R
50 CD MUTE L
51 CD MRST
52 CD MSTOP
53 CD DISC8 SW
54 CD LOE LIM SW
55 CD LOEJ
56 CD MOTOR
57 PON ILLUMI
TE
L 13942296513
58 PON CD
59 PON
60 VCC2
61 EXT AMP CON
62 VSS
63~65 TYPE 1~3
66 TUN TYPE1
67 TUN TYPE2
68 OEM DISP DATA
69 OEM DISP CLK
70 OEM DISP CE
71 EJECT
72 P CON
73 VFD KEY REQ
74 ANT CON
75 ILLUMI DET
76 BU DET
77 ACC DET
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78 (PWIC SVR)
79 PWIC MUTE
80 PWIC STBY
.
81 LX CON
I/O Application
I Flash EPM input
I Panel detection (Flip-down panel model only)
- Not used
I E2PROM writing request
O FL+B control
O VFD chip select control
I VOL key input
I VOL key input
I 12cm CD detection
I CD loading detection
I Rch CD mute request
I Lch CD mute request
O CD mecha µ-COM reset
O CD mechanism µ-COM stop
I 8cm CD detection (Not used)
I CD detection (Chucking SW)
I/O CD motor control
O CD motor control
I/O Key illumination power supply control
O Power supply control for CD-WMA
O Power supply
-
I/O EXTERNAL AMP control
-
I Destination switching
I Destination setting 1
I Destination setting 2
I/O External display data (Destination K and E only)
I/O External display clock (Destination K and E only)
External display control request
I/O
(Destination K and E only)
I Eject key input (Flip-down panel model only)
O External amplifier control
I Communication request from VFD driver
O Power antenna control
I Dimmer illumination detection
I Momentary power-down detection
I ACC power supply detection
O SVR discharging circuit
x ao u163
y
O Power IC mute
O Power IC standby control
i
O Start-up request to slave unit
KDC-MP632U
KDC-W6534U/UY/X590/X7533U
2 9
8
Truth
Processing / Operation / Description
Value Table
L: Panel detached, H: Panel attached
L fixed
H: Writing
H: FL+B ON, L: FL+B OFF
Detects pulse width
Detects pulse width
H: Normal, L: Requesting Rch mute
H: Normal, L: Requesting Rch mute
H: Normal, L: Reset
H: Mecha µ-COM operates, L: Mecha µ-COM stops
H: Loading completes, L: No disc
w
Refer to the truth value table
w
Refer to the truth value table
H: ON, Hi-Z: OFF
Q Q
3 6 7 1 3 1 5
L: POWER ON, H: POWER OFF
L: Before M-STOP with reset
H: POWER ON, L: POWER OFF
e
Refer to the truth value table
r
Refer to the truth value table
r
Refer to the truth value table
External display
External display
External display
L: Eject
H: POWER ON, L: POWER OFF or STANDBY
Connects to INT
Tuner ON: H
L: ON, H: OFF
L: BU found, H: No BU or momentary power down
L: ACC found, H: No ACC
H: POWER OFF or 5 seconds after momentary power
down, L: Other conditions
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L: STANDBY, momentary power down or TEL mute
H: POWER ON, L: POWER OFF
.
H: Slave unit starts up, L: Slave unit stops
9 4 2 8
0 5 8 2 9 9 4 2 8
m
9 9
9 9
7