Kenwood KDC-X959, Service Manual

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KDC-X959/Z939,Z738,Z838W
8
Pin No. Pin Name I/O Description Processing Operation
50 AFS O Noise detection time constant switching terminal
Lo: During FM seek or AF search, Hi: During FM
reception, Hi: During last FM mode with RDS/
RDBS model
51 AM+B I/O AM+B control Hi: During AM reception
52 FM+B I/O FM+B control
Hi: During FM reception, Hi: During last FM mode
with RDS/RDBS model
53 R QUAL I Quality input from the RDS decoder IC
Except RDS, RBDS model: Not used(pull down to
GND lines)
54 R DATA I Data input from the RDS decoder IC
Except RDS, RBDS model: Not used(pull down to
GND lines)
55 IC2TYPE0 I IC2 setting terminal Lo: Initial value(default)
56 IC2TYPE1 I IC2 setting terminal Lo: Initial value(default)
57 P ON I/O SW 14V control output Hi-Z: POWER OFF mode, Hi: POWER ON mode
58 BVDD - Positive power supply connection terminal Connected to BU 5V lines.
59 BVSS - Ground connection terminal Connected to GND lines.
60 TYPE0 I Destination type selection terminal 0
61 TYPE1 I Destination type selection terminal 1
62 TYPE2 I Destination type selection terminal 2
63 TYPE3 I Destination type selection terminal 3
64 AUX SW O CD/AUX input switching output Lo: Except AUX input, Hi: AUX input
65 ILL ON I/O OEL/Illumination AVR ON/OFF control output Hi-Z: AVR OFF, Hi: AVR ON
66 MOSW O CD mechanism loading motor control output Hi: CD loading/eject action or Break, Lo: Other
67 LO/EJ I/O CD mechanism loading/Eject switching output Lo: Loading, Hi: Eject, Hi-Z: Stop or Break
68 M STOP O Stop request to CD mechanism MI-COM. Lo: Stop mode, Hi: Operation mode
69 M RST O Reset output to CD mechanism MI-COM. Lo: Reset
70 CH CON O Changer control Lo: Standby mode, Hi: Operation mode
71 CH RST O Reset output to changers : Reset
72 CH REQH O Request output to changers Lo: Request
73 AVCONT O A/D converter reference voltage control output Hi: Active, Connected to AVREF terminal
74 AVDD - A/D converter positive power supply connection terminal Connected to BU 5V lines.
75 AVSS - A/D converter ground connection terminal Connected to GND lines.
76 AVREF I A/D converter reference voltage input terminal
77 IFC OUT I F/E IFC OUT input terminal Hi: Station detected (Vth=2.5V)
78 S METER I S-meter input from F/E
79 NOISE I FM noise detection input
80,81 NC I Not used(Pull down to GND lines)
82 CD SW2 I 12cm disc detection SW input Lo: 12cm disc detected
83 M MUTE R I Mute request (R Ch.) from CD mechanism MI-COM. Lo: Mute request
84 M MUTE L I Mute request (L Ch.) from CD mechanism MI-COM. Lo: Mute request
85 CD SW3 I Down & limit switch detection input Hi: Chucking, Hi
→
Lo: Pickup most inner position
86 PANEL DET I Panel detection input Lo: Panel attached, Hi: Panel detached
87 CH MUTE I Mute request from changers Hi: Mute request
88 PHONE I PHONE detection input 1V or less: TEL MUTE, 2.5V or greater: NAVI MUTE
89 SC CON O Control output to the panel MI-COM. Hi: Operation mode
90 SOURCE I/O SOURCE key detection input Lo: When SOURCE key is pressed
91 CD SW1 I Loading SW detection input Lo: Loading start
92 CD SW4 I/O 8cm disc detection SW input Not used(N.C.)
93 R CLK I Clock input from the RDS decoder IC
Except RDS, RBDS model: Not used(pull down to
GND lines)
94 CH REQC I Communication request input from changers Lo: Request
95 EJECT I EJECT key detection input Lo: When EJECT key is pressed
96 SC REQ I Communication request input from the panel MI-COM. Hi: Request
97 CH DATAC I Data input from changers
98 CH DATAH O Data output to changers
99 CH CLK I/O Clock input/output with changers
100 SC DATA I Data input from the panel MI-COM.
MICROCOMPUTER'S TERMINAL DESCRIPTION
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