Kenwood NV-301, Service Manual

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RXD-NV301/NV301E/NV701/NV701E
6
CIRCUIT DESCRIPTION
Pin No. Pin Name I/O Description
1,2 NC - Unused.
3 VDD - Power supply.
4 POWER DOWN I Input port for power down.
5 VOLUME DOWN I Pulse input of volume encoder(down).
6 RDS CLK I RDS clock input.
7 VOLUME UP I Pulse input of volume encoder(up).
8 REMOCON I Remote control data input.
9 RDS DATA I RDS data input.
10,11 NC - Unused.
12 PROTECTION I Detection signal input for protection.
13 CrO2 I Input port of CrO2 detection switch for deck.
14 REEL DATA I Input port of reel data.
15 AMS IN I AMS input.
16 SYS DATA O
Data output to volume IC(IC313) for NV701.
Data output to function IC(IC301) for NV301.
17 SYS CLK O
Clock output to volume IC(IC313) for NV701.
Clock output to function IC(IC301) for NV301.
18 DIGI 1 I/O Communication with FL driver IC.
19 DIGI 2 I/O Communication with FL driver IC.
20 H/P SENSE I Detection port of headphones jack.
21
912CSB O Sub DSP chip select for NV701.
NC - Unused for NV301.
22
912SCK O Clock output to YSS912(IC603) for NV701.
TUNER CLK O Clock output to PLL IC(IC2) for NV301.
23
912SO O Serial data output to YSS912(IC603) for NV701.
NC - Unused for NV301.
24
912SI I Serial data input from YSS912(IC603) for NV701.
NC - Unused for NV301.
25
912CS O Chip select to YSS912(IC603) for NV701.
NC - Unused for NV301.
26 TUNED I Tuned input.
27 STEREO I Stereo signal input.
28 VREF - Reference voltage.
29,30 KEY1,KEY2 I A/D key input.
31 VSM I Tuner signal meter A/D input.
32 TUNER DO I PLL IC data input.
33 MODE(DECK) I Deck mode switch input.
34 STATUS I Deck pack in/rec in/off sense port.
35 AREA SELECT I Selection of destination for tuner.
36 THERMAL PROTECT I Detection port of thermometer.
37 AVSS - Connected to ground.
38 RESET I Reset signal input.
39 EXTAL I Input port of crystal oscillator.
40 XTAL O Output port of crystal oscillator.
41 VSS - Connected to ground.
42 TX - Port for 32.768kHz crystal oscillation.
43 TEX - Port for 32.768kHz crystal oscillation.
44 VDD - Power supply.
45 VFDP - Connected to ground.
46 SOLENOID O Control port of solenoid for deck.
47 MOTOR ON O Control port of motor for deck.
48 DECK MUTE O Control port of deck mute.
49 REC MUTE O Control port of rec mute.
50 DOLBY O Dolby noise reduction output for deck.
51 BEAT CUT O Output port of AM beat cut for deck.
52 CrO2- REC O Control port of rec bias for deck.
53 REC/PB O Selection of recording and playback for deck.
54 CD POWER DOWN O Control port of CD power down.
1. Pin description of microprocessor : IC2
CXP82852-183Q(RXD-NV301)/CXP82860-185Q(RXD-NV701)
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