KENWOOD KCAR71FM
Service Manual

KCA-R71FM
MICROCOMPUTER�S TERMINAL DESCRIPTION
� SYSTEM MICROCOMPUTER : LC72366-9B63 (FM MODULATOR UNIT : IC501)
Pin No. 1 2 3~5 6 7 8 9 10 11 12 13 14 15 16 17 18 19~26 27 28~30 31 32 33~44 45 46~52 53 54 55 56 57~60 61~66 67 68 69 70 71 72 73 74 75 Pin Name XIN TEST2 PG3~1 PG0 PF3 PF2 PF1 PF0 SI2 SO2 SCK2 PE0 PD3 PD2 PD1 PD0 PC3~PB0 PA3 PA2~0 VDD PQ0 PP3~PN0 PM3 PM2~PL0 PK3 PK2 PK1 INT0 PJ3~0 PI1~PH0 HOLD SNS LCTR HCTR EO3 SUBPD VDD AMIN FMIN I/O I O I O I O O I O O O O O O O O I I O O O O O O O I O I I I I I O O I I Terminal name X IN GND NC GND NC REQC REQH CHCON CH_DATA_C CH_DATA_H CH_CLK NC LCD DATA out LCD CLK LCD RESET LCD CE NC LCD DATA in NC Vdd NC GAIN12~1 SEP-ATT NC RELAY P-on MUTE REMOCON NC NC HOLD Vdd NC NC NC NC Vdd NC VCO in X_tal Ground connection terminal Not used (pull down to GND lines.) Connected to GND lines. Not used (open) CD-Changer REQC (Active �Low�) CD-Changer REQH (Active �Low�) CD-Changer ON CD-Changer DATA in CD-Changer DATA out CD-Changer DATA SCK (Active �Low�) Not used (open) LCD Driver DATA out LCD Driver CLK out LCD Driver RESET out LCD Driver CE out Not used (open) LCD Driver DATA in Not used (pull down to GND lines.) 5V Not used (open) Modulation output switching When it has GAIN5 output, �Hi� output Not used (open) Antenna relay control output terminal P_ON Mute output terminal for the Tuner frequency change Remote controller signal input Not used (open) Not used (pull down to GND lines.) ACC detection (Operation in HOLD �Low�) Vdd Not used (pull down to GND lines.) Not used (pull down to GND lines.) Not used (open) Not used (open) Vdd Not used (pull down to GND lines.) VCO input L L Hi-Z Hi-Z Description Operation in HOLD L L H L L H L L L L L L L L L L L L L

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