Sony MHC-NX1 Service Manual - Page 79

Pin No. Pin Name I/O Description 74 CAPM-CNT2 O Capstan motor (M1) drive signal output terminal "H" active *3 75 CAPM-CNT1 O Capstan motor (M1) drive signal output terminal "H" active *3 76 CAP-M-H/L O High/normal speed selection signal output of the capstan motor (M1) "L": normal speed, "H": high speed 77 AMS-IN I Whether a music is present or not from the HA12215F (IC301) is detected an automatic music sensor "L": music is present, "H": music is not present 78 TC-MUTE O Line muting on/off selection signal output to the HA12215F (IC301) "L": muting off, "H": muting on 79 REC/PB/PASS O Recording/playback/pass selection signal output to the HA12215F (IC301) "L": recording mode, "H": pass, "Hi-z": playback mode 80 DOLBY NR O Dolby NR on/off selection signal output to the HA12215F (IC301) "L": dolby off, "H": dolby on 81 REC-MUTE O Recording muting on/off selection signal output to the HA12215F (IC301) "L": muting on, "H": muting off 82 BIAS O Recording bias on/off selection signal output to the HA12215F (IC301) "L": bias off, "H": bias on 83 EQ-H/N O Normal/high speed selection signal output to the HA12215F (IC301) "L": normal speed, "H": high speed 84 PB-A/B O Deck-A/B selection signal output to the HA12215F (IC301) "L": deck-A, "H": deck-B 85 ALC O Automatic limiter control signal output to the HA12215F (IC301) "L": limiter on 86 B-PLAY-SW I Detection input from the deck-B play detect switch (S1002) "H": deck-B play 87 A-PLAY-SW I Detection input from the deck-A play detect switch (S1001) "H": deck-A play 88 A-HALF I Detection input from the deck-A cassette detect switch (S1003) "L": cassette in, "H": no cassette 89 B-HALF I Detection input from the deck-B half detect switch (S1006) 90 B-SHUT I Shut off detection signal input from the deck-B side reel pulse detector (IC1002) 91 A-SHUT I Shut off detection signal input from the deck-A side reel pulse detector (IC1001) 92 DISC-SENS I Detection input from the disc in detect sensor (D704 and Q703) on the CD mechanism block "H": disc detected 93 CNT-SW I Detection input from the count detect switch (S706) on the CD mechanism block "L": when elevator up/down each sub tray stock position 94 MODEL-IN I Destination setting terminal 95 KEY1 I Key input terminal (A/D input) S211 to S223 (G/S/s (CD), DISC 1/2/3/4/5, A (DISC 5/4/3/2/1)) keys input 96 AVSS - Ground terminal (for A/D conversion) Key input terminal (A/D input) 97 KEY0 I S201 to S206, S224 to S228 (s/G/g (DECK B), s/G/g (DECK A), HI DUB, CD SYNC, REC PAUSE/START, DIRECTION, DOLBY NR) keys input 98 VREF I Reference voltage (+5V) input terminal (for A/D conversion) 99 AVCC - Power supply terminal (+5V) (for A/D conversion) 100 NC I Not used (fixed at "L") *3 Capstan motor (M1) control Terminal Mode Stop CAPM-CNT2 (pin uf ) "L" CAPM-CNT1(pin ug ) "L" Forward Reverse Direction Direction "H" "L" "L" "H" Brake "H" "H" 36