Yamaha TSX-10, Service Manual

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TSX-10/15/20
TSX-10/15/20
IC201 : M30217MA-A209FP (Mask Rom) 16 bit µ-COM
M30218FCFP (Flash Rom)
23
• Extention OUT port (IC202: BU2092 / F)
Pin No. Name Function
5(5) Q0 Tuner MUTE OUT (TUNER) [1: MUTE ON]
6(6) Q1 AMP MUTE OUT [0: MUTE ON]
7(7) Q2 AUX REC OUT MUTE control OUT [0: MUTE ON]
8(8) Q3 Blue LED control OUT [0: ON]
9(9) Q4 Speaker relay OUT [0: ON 1: OFF]
10(10) Q5 Power supply relay (Power ON) OUT [0: ON 1: OFF]
11(11) Q6
12(14) Q7
13(15) Q8 TC74HC4051A 1/2 select OUT [0: IN-2 1: IN-1]
14(16) Q9 TC74HC4051A control A OUT [Pull-up required]
15(17) Q10 TC74HC4051A control B OUT [Pull-up required]
16(18) Q11 TC74HC4051A control C OUT [Pull-up required]
* Figures in ( ) represent pin terminal numbers of BU2092/FV.
• Extension IN port 1 (IC203: TC74HC4051A) A-D input
Pin No. Name Function
1 4 Destination select input (TUNER) [Pull-up -> VREF at 10k ]
2 6
4 7
5 5 Temperature sensor input [0~VREF]
12 3 KEY 2 input [Pull-up -> VREF at 10k ]
13 0 Extension IN port 2 (TC74HC4051A) OUT enter IN [Connected to 3 pin of IC204]
14 1 KEY 0 input [Pull-up -> VREF at 10k ]
15 2 KEY 1 input [Pull-up -> VREF at 10k ]
• Extension IN port 2 (IC204: TC74HC4051A) input
Pin No. Name Function
1 4 Power amplifier excess current DC voltage detect IN [1: abnormality exists]
2 6 Headphone detect IN [0: SP 1: HP]
4 7
5 5 STATION IN (TUNER) [0: station exists]
12 3 STEREO/MONO IN (TUNER) [0: STEREO]
13 0 /OPSW CD tray OPEN detect SW IN
14 1 /CLSW CD tray CLOSE detect SW IN
15 2 /FLSW CD feed end detect SW IN
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