Yamaha-AS-1000-Schematic电路原理图.pdf

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1、ABCDEFGHIJ 1 2 3 4 5 6 7 A-S1000 35 I BLOCK DIAGRAM COLD(-) + - + - A B PHONES SPEAKERS L/R CH R CH CD L/R TUNER L/R LINE1 L/R LINE2 PB L/R LINE2 REC OUT L/R PHONO L/R MC HEAD AMP EQ AMP ATT.1 ATT.2 ATT.3 TONE CONTROL DEVICES PRE OUT MAIN IN MM/MC RY_MMMC SPEAKER DRIVER LOW IMPEDANCE DRIVE HEADPHONE

2、 AMP. INDEPENDENT FLOATING POWER SUPPLY FLOATING BALANCED POWER AMPLIFIER VOLUME & TONE CONTROL R CH R CH L CH L CH for HOT POWER TRANSFORMER INPUT SELECTOR INPUT BUFFER INDEPENDENT REGULATED POWER SUPPLY (for AUDIO) For MC AMP For EQ AMP For LINE AMP1 For LINE AMP2 For VOLUME1 For VOLUME2 +20V/-20V

3、 +25V/-25V +25V/-25V +25V/-25V +12/-12V +12V/-12V SUB-TRANSFORMER BUFFER AMP. VOLUME INPUT SEL BALANCEBASS SPEAKER TREBLE REMOTE POWER SWITCH for MICROPROCESSOR FRONT PANEL MICRO PROCESSOR AC IN RY101 RY102 RY103 IC410 IC404 RY_BYP RY402 RY_DIR RY404 RY501 RY201/R111 RY202/R112 RY_SPA RY_SPB JK501 R

4、Y_HP HP END PRDPRI THM +B3/-B3 D335 D336 D300 D301 D305 D304 PRV RY1 T1 34 60PRV1PRV PDET 17 16RY_PWR 35 4 5 36,37MVOL+/- 41-43A/B/C 46 39 25 REM 5I_BAS I_TRE 12 4 I_LRBAL 2I_SEL 1I_VOL LED_PWR 54 RY_UNBAL RY_BYP 532,3 PRD 1,64 THM 62,63 HP_PRD 48 PSVA1 47 PSVA2 RY_DIR 32RY_BAL 26RY_CD 27RY_TU 28RY_

5、L1 29RY_L2 55RY_MMMC 56 15 IC501 IC502 SP_AB 9-113,4 RY_PHONO RY_SPB RY_SPA RY_HP VR501 PRV +33V -33V D306 PRV IC52 IC51 +12V PSVA1 PSVA2 -12V +B4/-B4 +B1/-B1 +B2/-B2 RY403 IC413 IC302 IC414IC303 IC405 IC406 IC411 IC412 IC301 POL/POR RY_PHONO RY_CD RY_TU RY_L1 RY_L2 Q1001-1016 Q1017-1038 FLAT SPCH A

6、 L/R CH SPCH B L/R CH (for POWER AMP / VOLTAGE AMP STAGE) HOT(+) HOT (POSITIVE PHASE) SIDE for COLD for HOT for COLD SPEAKER DRIVER COLD (NEGATIVE PHASE) SIDE to POWER AMP. to SPEAKERS RELAY MAIN DIRECT BALANCE UNBALANCE CONVERTER FRONT See page 59-61 SCHEMATIC DIAGRAM See page 55-57 SCHEMATIC DIAGR

7、AM MAIN See page 58 SCHEMATIC DIAGRAM FUNCTION See page 55-57 SCHEMATIC DIAGRAM See page 59-61 SCHEMATIC DIAGRAM FUNCTION See page 55-57 SCHEMATIC DIAGRAM FUNCTION FRONT See page 59-61 SCHEMATIC DIAGRAM FRONT LINE AMP. RadioFans.CN 收音机爱 好者资料库 CB301 IC301 IC301 IC302 IC304 IC304 IC302 IC303 IC303 CB3

8、05 W3004 W3002 W3005 W3001 W3007 W3003 W3006 CB302 A 1 2 3 4 5 6 7 8 9 10 BCDEFGHIJKLMN A-S1000 55 # All voltages are measured with a 10M/V DC electronic voltmeter. # Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originall

9、y installed. # Schematic diagram is subject to change without notice. FUNCTION 1/3 SCHEMATIC DIAGRAMS 11.9 -12.1 -12.1 -12.1 -12.1 -12.1 -12.1 0 0 -12.0 0 0 -12.0 0 0 0 0 0 -12.4 0 12.5 0 0 0 0 0 0 12.5 -12.4 0 0 0 -12.4 0 0 0 12.5 0 0 -12.0 0 0 -12.0 0 0 -12.0 0 0 -12.0 25.5 0.6 25.5 0.6 0 -25.5 -0

10、.5 0 -0.5 -25.5 -12.1 6.5 0.5 0 0.5 6.0 0 6.0 6.0 0.5 -25.3 -24.7 -24.2 -24.2 -0.7 -0.7 -0.2 -25.3 -24.3 24.3 25.4 24.3 1.0 0.4 25.4 24.3 1.0 0 0.4 1.0 1.0 0.2 0 6.0 6.5 0 0.5 5.9 0 5.9 5.9 0.5 -25.3 -24.7 -2.42 -24.2 -0.8 -0.8 -0.2 -25.3 -24.3 24.4 25.4 24.4 1.0 0.4 25.0 25.5 1.0 0 0.2 1.0 1.0 -0.8

11、0 5.9 0 0 -11.9 11.9 -11.8 12.6 -12.4 0 0 0 0 CD L IC304: NJM2068MD-TE2 Dual operational amplifier OUT1 OUT2IN1 +IN1 +IN2 -IN2 VCC +VCC 1 2 3 4 8 7 6 5 + + OUTPUT V+ -INPUT +INPUT V- 1,7 8 4 2,6 3,5 IC301-303: NJM2082M-TE1 Dual J-FET input operational amplifier A OUTPUT A-INPUT A+INPUT V- B OUTPUT B

12、-INPUT B+INPUT V+1 2 3 4 8 7 6 5 + A B + FUNCTION (1) LINE 2 INPUT s310 s310 s311 s310s310 s311 to FUNCTION (2)_CB403 Page 56M5 to FUNCTION (3)_W3 Page 57H8 to FRONT (12)_CB59 Page 61H2 to FUNCTION (2)_CB402 Page 56B7 to FUNCTION (2)_CB408 Page 56B7 to FUNCTION (2)_CB401 Page 56B5 to FUNCTION (2)_CB

13、407 Page 56B6 to FRONT (1)_CB519 Page 59K7 to FRONT (10)_W1003 Page 60M7 to FRONT (10)_W1002 Page 60M5 RadioFans.CN 收音机爱 好者资料库 IC412IC411IC410 CB405 W4005 CB406 CB403 CB404 W4004 IC414 IC414 CB401 CB407 CB408 CB402 IC404 IC404 IC405 IC405 IC406 IC406 A 1 2 3 4 5 6 7 8 9 10 BCDEFGHIJKLMN A-S1000 56 #

14、 All voltages are measured with a 10M/V DC electronic voltmeter. # Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. # Schematic diagram is subject to change without notice. FUNCTION 2/3 0 12.5 12.5 0 0 0

15、 0 0 0 0 0 -12.4 0 0 0 0 0 0 00 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12.5 -12.4 0 0 0 0 0 0 12.5 0 0 12.4 -12.3 12.5 12.3 0 0 0 0 -12.3 12.4 12.5 0 0 0 -12.1 -12.1 0 -12.2 0 0 0 0 0 0 0 12.5 12.5 12.5 0 0 0 0 0 0 0 0 -12.4 0 0 0 0 0 0 00 0 0 0 12.5 0 0 0 0 0 0 0 0 0 0 12.5 -12.4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1

16、2.5 12.5 0 0 0 0 0 0 0 0 -12.4 0 0 0 0 0 0 00 0 0 12.5 0 12.5 0 0 0 0 0 0 0 0 0 12.5 -12.4 0 0 0 0 0 0 0 0 0 0 0 0 0 24.6 25.6 25.624.6 -25.2 -24.6 25.2 24.6 25.6 0.4 1.1 0 0 0 0 0 1.01.1 1.0 1.0 0.5 0.4 -0.7 -0.7 -0.1 -0.1 25.1 24.6 1.0 1.0 -0.1 -0.7 -25.7 -12.1 11.7 -11.6 0 0 0 0 -10.9 11.0 10.9 1

17、1.0 0 0 -12.1 -12.1 -12.1 25.6 0.5 1.1 -0.2 -25.7 -0.7 0.5 5.9 5.9 -0.7 -0.7 -25.2 -25.7 -25.3 5.9 6.5 5.9 0 0.5 0.5 0 0.5 5.9 5.9 0.5 6.5 0.5 0 5.9 5.9 5.9 6.5 24.6 25.7 25.824.7 -25.4 -24.8 25.3 24.7 25.7 0.4 1.1 0 0 0 0 0 1.0 1.1 1.0 1.1 0.5 0.4-0.7 -0.7 -0.7 -0.1 24.7 1.0 1.0 -0.1 -0.7 -25.8 12.

18、6 12.6 0 0.6 0 -12.5 -12.5 -0.5 12.6 12.6 0 0.6 0 -12.5 -12.5 -0.5 25.6 25.6 0 0.6 0 -25.7 -25.7 -0.5 25.7 0.5 1.1 -0.2 -25.8 -0.7 0.5 5.9 5.9 -0.7 -0.7 -25.3 -25.8 -25.3 5.9 6.5 5.9 0 0.5 0.5 0 0.5 5.9 5.9 0.5 6.5 0.5 0 5.9 5.9 5.9 5.9 6.5 OUT L IN L IC410-412: TC94A81UG Electronic volume control Z

19、ero crossing detection circuit Decoder 24-bit shift register 39 38 37 36 35 34 33 1 3231302928 L-SW-IN4 L-SW-OUT L-ZX-IN L-ZX-AGND L-MVR-IN L-MVR-AGND1 L-MVR-AGND2 R-MVR-AGND2 L-MVR-OUT R-MVR-OUT L-TVR-OUT R-TVR-OUT L-TVR-IN R-TVR-IN L-TVR-REF R-TVR-REF NC 40L-SW-IN3 41L-SW-IN2 42 43 45 L-SW-IN1 TES

20、T VDD SS1 R-SW-IN4 R-SW-OUT R-ZX-IN R-ZX-AGND R-MVR-IN R-MVR-AGND1 R-SW-IN3 R-SW-IN2 R-SW-IN1 NC VSS Latch LatchLatchLatch Latch Latch Zero crossing detection circuit LatchLatch Latch Decoder 2726252423 Latch 22 21 20 19 18 17 16 15 14 13 12 2 SS2 3 CS1 4 CS2 5 MUTEM 6 GND 8 MUTE 9 CK 10 DATA 11 STB

21、 7 TC Timing gene Test and Power ON reset Level shift 1 2 3 4 8 7 6 5 1OUT 1IN 1IN+ VCC VCC+ 2OUT 2IN 2IN+ OUT VCC VCC+ 36 pF 37 pF 14 pF 7 pF 15 460 15 IN+ IN IC404-406: NE5532DR Dual low-noise operational amplifiers IC414: BA15218F Dual high slew rate, low noise operational amplifier + + 1 2 3 4 8

22、 7 6 5 OUT1 IN1 + IN1 VEE VCC OUT2 IN2 + IN2 1ch 2ch A +- 1OUTPUT A INVERTING INPUT A NON-INVERTING INPUT A V- B 2 3 4 8V+ OUTPUT B INVERTING INPUT B NON-INVERTING INPUT B 7 6 5 IC404-406: LME49723MA Dual high fidelity audio operational amplifier FUNCTION (2) s400 s400 s400s400s400s400 s403 s403 s40

23、3 s403 s403 s403 s401s401 s401s401 s402 s402 s404 s401s401 s401 s401 s404 to FRONT (2)_CB504 Page 59C9 to FUNCTION (1)_W3003 Page 55K3 to FRONT (1)_CB517 Page 59K6 to MAIN (1)_W102 Page 58A3 to MAIN (2)_W202 Page 58A8 to FRONT (11)_W6 Page 61G4 to FUNCTION (1)_W3001 Page 55K4 to FUNCTION (1)_W3007 P

24、age 55K4 to FUNCTION (1)_W3002 Page 55K6 to FUNCTION (1)_W3005 Page 55K6 W1 CB25 CB23 IC52 IC51 W11A W11B CB2 W10A CB3CB4 W10B W3 W4 A 1 2 3 4 5 6 7 8 9 10 BCDEFGHIJKLMN A-S1000 57 # All voltages are measured with a 10M/V DC electronic voltmeter. # Components having special characteristics are marke

25、d s and must be replaced with parts having specifications equal to those originally installed. # Schematic diagram is subject to change without notice. FUNCTION 3/3 AC29.8 AC8.6 0 0 0 0.7 0 0 5.0 5.0 5.0 0 0 5.1 0 5.1 5.1 6.5 6.5 5.1 3.3 6.53.3 0 0 0 5.0 0.8 0 0 7.6 7.6 8.9 7.6 0 9.5 7.6 7.6 7.6 3.3

26、 8.2 3.3 7.6 8.2 7.9 0 7.6 8.2 7.6 3.2 0 7.6 7.6 -19.4 0 0 19.6 12.0 10.6 0 0 11.9 0 0 4.9 12.2 -12.1 11.9 0 1.3 0 -12.0 -19.5 0 0 19.512.0 -19.412.1 IC51: NJM7812FA Voltage regulator INPUT OUTPUT COMMON IC52: NJM7912FA Voltage regulator COMMON OUTPUT R23 R24 R13 R14 R20 R17 D3 Q22 Q21 Q25 Q20 Q24 Q

27、18 Q9 R18 R19 R16R15R21R12R11 R10 Q17 R9R8 R7 R5 R4 D2D1 R6 C1C2 C3 R22 Q11 Q13 Q14 Q15 Q19 Q16 Q23 Q8 Q7 Q2 Q1 Q6 Q5 Q3 Q10 Q12 Q4 R1 R2 R3 INPUT FUNCTION (3) s310 C3036 C3037 C3041 C3042 UR05810 100/35 UR25747 47/35 UR25747 47/35 UR25747 47/35 UR25747 47/35 UR25747 47/35 UR25747 47/35 s311 R3044 R

28、3050 V807090 1P100 HF35510 1/2P100 HF35510 1/2P100 HF35510 1/2P100 HF35510 1/2P100 HF35510 1/2P100 HF35510 1/2P100 s400C4049 C4050 C4051 C4052 C4053 C4054 WK04180 10/16 WM09800 4.7/16 WM09800 4.7/16 WM09800 4.7/16 WM09800 4.7/16 WM09800 4.7/16 WM09800 4.7/16 s401C4093 C4094 C4114 C4115 C4127 C4128 C

29、4233 C4234 UR05810 100/35 UR25747 47/35 UR25747 47/35 UR25747 47/35 UR25747 47/35 UR25747 47/35 UR25747 47/35 s402C4108 C4110 UU23710 10/16 WM09800 4.7/16 WM09800 4.7/16 WM09800 4.7/16 WM09800 4.7/16 WM09800 4.7/16 WM09800 4.7/16 s403 IC404 IC405 IC406 YA089A0 LME49723MA X5482A0 NE5532DR X5482A0 NE5

30、532DR X5482A0 NE5532DR X5482A0 NE5532DR X5482A0 NE5532DR X5482A0 NE5532DR s404R4072 R4164 V807090 1P100 HF35510 1/2P100 HF35510 1/2P100 HF35510 1/2P100 HF35510 1/2P100 HF35510 1/2P100 HF35510 1/2P100 to FRONT (13)_CB79 Page 61H6 to FUNCTION (1)_CB302 Page 55K2 To POWER TRANSFORMER to MAIN (3)_W317 P

31、age 58L3 to FRONT (1)_CB501 Page 59B4 to FRONT (14)_W8A, W8B (R, L models) AC IN To POWER TRANSFORMER POWER ON/OFF switch (U, C, T, K, A, B, G, J models) 600mm 2P Page 61D9 W102 CB52CB72 CB54 CB75CB55 IC102 W103 CB21 CB22 W303C W104 CB24 W317 CB26 W303D W303B W303A W316 W318 W315 W314 W304D W304B W3

32、04A IC303IC301 IC302IC300 W304C CB74 CB76 CB73 W204 W203 CB71 IC202 CB84 CB79CB80 CB77CB78 CB57CB58 CB59 CB64 CB60 W202 A 1 2 3 4 5 6 7 8 9 10 BCDEFGHIJKLMN A-S1000 58 # All voltages are measured with a 10M/V DC electronic voltmeter. # Components having special characteristics are marked s and must

33、be replaced with parts having specifications equal to those originally installed. # Schematic diagram is subject to change without notice. MAIN AC82.6 AC48.1 DC47.2 DC47.2 AC35.1AC35.1 AC35.1 AC35.1 DC46.9 DC46.9 52.452.4 52.4 52.4 6.4 6.4 7.0 1.9 6.4 1.7 54.9 -56.4 52.4 52.4 54.4 54.4 53.6 53.0 52.

34、4 0.7 -43.2 0.7 0 -1.7 54.9 53.6 -49.8 -50.4 53.0 0.7 52.4 0.7 0 -43.0 53.0 -43.0 -43.8 -44.5 -44.9 -1.7 -43.7 -43.0 1.7 -45.4 1.7 -44.9 -45.5 1.7 1.7 -45.5 -44.9 54.9 -45.6 -45.5 1.5 -43.2 1.5 1.51.7 1.7 1.6 54.9 1.7 1.7 1.7 1.7 1.7 -43.2 -44.9 54.9 1.7 0 54.8 54.9 0 0.95.1 00.6 10.4 0.6 0.6 54.9 0

35、 56.5 0 -56.4 0 31.9 0 -31.8 0 23.4 0 4.6 -23.2 0 23.4 4.4 0 -23.4 0 0 -15.5 -16.5 0.6 0 -15.6 4.5 4.6 -18.3 -18.3 -45.2 -46.2 5.1 -17.5 -46.3 -45.3 5.1 0 -16.5 -15.6 -23.2 0 23.4 0 0 4.4 3.7 -16.5 -15.5 5.1 0 0 4.5 -16.5 -18.8 5.1 5.1 -16.25.1 -16.2 -45.1 -45.1 5.1 -18.8 -46.3 -45.4 54.8 10.4 -43.0

36、 -43.0 -43.8 -1.7 54.8 54.8 54.7 0 1.7 1.7 1.7 -44.5 -45.6 1.7 -45.9 -45.6 1.7 -45.9 -45.6 54.7 -45.6 -45.4 1.5 1.7 1.51.7 1.5 1.5 44.9 1.7 -45.5 -44.9 1.7 -45.5 -44.9 1.7 -45.5 -44.9 -1.5 53.0 53.0 53.5 54.3 53.8 54.4 52.4 52.4 0.6 0.6 0.6 0.6 53.0 -42.9 -50.3 53.5 52.4 52.4 52.4 6.2 6.7 0.2 1.7 1.

37、6 6.7 1.7 52.4 52.4 6.2 0.7 1.6 1.7 6.2 0 -43.0 -49.7 -44.9 -44.4 1.5 -42.9 52.4 54.4 54.8 54.8 -54.8 -43.5 1.5 -44.4 -43.8 -45.5 -45.5 1.7 -45.5-45.6 1.6 1.7 -45.9 -44.9 0.6 0 0.6 0 -17.5 -15.5 -15.5 -16.5 -16.5 -15.6 0 0 -16.5 -15.6 0 -16.5 23.4 0 0.6 3.2 -23.4 0 3.7 -43.9 -45.4 -44.5 -45.4 -45.9

38、-45.5 -45.9 -45.9 -45.5 -45.5 -45.4 -45.7 -45.7-45.6 1.7 -44.9 -45.5 1.7 54.9 54.4 53.9 7.0 7.0 1.9 1.7 1.9 6.4 0 0.95.1 Ground point Ground point OUT L MAIN (1) MAIN (2) MAIN (3) MAIN (4) MAIN (5) Idling adjustment Idling adjustment # # # # # # # # # # Note) Those parts marked with “#” are not incl

39、uded in the P.C.B. assy. （部品、基板含。） IC102, 202: LM61CIZ Temperature sensor to FUNCTION (2)_CB406 Page 56M4 to FUNCTION (2)_CB405 Page 56M2 to FUNCTION (3)_CB25 Page 57C6 to FRONT (11)_CB34 Page 61A3 To POWER TRANSFORMER To POWER TRANSFORMERTo POWER TRANSFORMER To POWER TRANSFORMER to MAIN (1)_CB52 C5

40、 to MAIN (2)_CB75 F6 to MAIN (1)_CB55 F1to MAIN (3)_W314 M2 to FRONT (1)_CB521 Page 59K8 to FRONT (12)_W101A, W101B Page 61H4 to FRONT (13)_W201A, W201B Page 61H8 安全対策 製品内部高電圧部分危険。修理際、絶縁性手袋使用安全対策行。 下記箇所電源OFF後電荷残、高電圧維持危険。 修理作業前放電用抵抗 （5 k/10 W） 下記箇所端子間接続放電。放電所用時間約30秒間。 1. MAIN （3） P.C.B.C308 2. MAIN （

41、3） P.C.B.C309 3. MAIN （3） P.C.B.C335 4. MAIN （3） P.C.B.C336 Safety measures Some internal parts in this product contain high voltages and are dangerous. Be sure to take safety measures during servicing, such as wearing insulating gloves. Note that positions indicated below are dangerous even after t

42、he power is turned off because an electric charge remains and a high voltage continues to exist there. Before starting any repair work, perform discharge by connecting a discharge resistor (5k-ohms/10W) between terminals at following positions. The time required for discharging is about 30 seconds.

43、1. C308 on MAIN (3) P.C.B. 2. C309 on MAIN (3) P.C.B. 3. C335 on MAIN (3) P.C.B. 4. C336 on MAIN (3) P.C.B. 5 k-ohms 10 W 5 k-ohms 10 W 5 k-ohms 10 W 5 k-ohms 10 W CB501 IC505 IC501 CB515 IC502 JK501 JK501 CB503 CB524 CB525 CB504 W5002 IC504 CB517 CB519 CB521 CB507 CB509 W5004 W5006 W5003A W5005A W5

44、005B W5009A W5009B W5007A W5007B W5003B CB512 W5008 IC503 A 1 2 3 4 5 6 7 8 9 10 BCDEFGHIJKLMN A-S1000 59 # All voltages are measured with a 10M/V DC electronic voltmeter. # Components having special characteristics are marked s and must be replaced with parts having specifications equal to those or

45、iginally installed. # Schematic diagram is subject to change without notice. FRONT 1/3 0 0.7 5.10.3 0.5 1.8 0 0 0 12.0 5.6 5.85.1 5.1 4.3 4.3 3.6 5.1 7.45.8 5.85.0 0 0 5.6 2.6 2.6 1.3 1.3 2.6 2.6 2.8 2.4 3.0 5.0 -12.1 -12.1 5.0 5.1 0 5.0 -12.10 0 0 0 0 11.9 0 0 -12.1 12.0 00 0 11.9 00 -12.1 0 0 0 11

46、.911.9 11.9 12.0 12.0 12.0 12.0 -12.1-12.1 0 0 11.9 12.0 -12.1 0 0 0 11.9 12.0 0 12.0 -12.1 12.0 0 0 0 11.9 0 -12.1 12.0 0 11.9 0 -12.1 12.0 4.9 5.3 5.3 5.3 -12.0 12.0 5.7 5.7 5.0 5.0 5.0 5.3 -12.0 5.0 5.3 -12.0 5.0 5.1 5.1 5.1 5.1 0.2 5.1 0 0 0 5.1 5.1 5.1 3.9 3.9 1.3 1.5 5.0 5.1 5.0 0 5.1 5.0 0 5.

47、0 4.6 5.0 0 5.0 5.1 5.0 5.1 5.0 5.1 5.0 5.1 5.0 0.2 5.0 5.1 5.0 5.1 0 0.6 0.8 0.6 0 0 12.0 12.0 0.8 0.6 0 0 0 0 0 0 0 0.7 0.7 5.0 0 5.0 1.5 0 0 0 0 0 0 5.0 0 4.9 5.0 1.0 3.9 1.3 0 0 5.0 5.0 0 0 0 4.9 0 0 0 0 0 0 0 0 0 1.8 1.0 1.3 3.0 2.4 2.8 0.2 5.0 3.9 0 0 0 0 0 0.5 0.55.0 0 0 2.1 2.5 0 4.9 5.0 0 0

48、 0 0 5.0 5.0 0 1.0 A-2 1 2 A-1 41 62 COM3 74 55 INH6 VEE7 GND8 Vcc16 215 114 013 312 A11 B10 C9 IC501: TC74HC4051AFEL 8-channel analog multiplexer/demultiplexer LogicLevel Converter OUTCIN OUTCIN A B C INH COM 0 1 2 3 4 5 6 7 IC503: LB1641 Motor driver INPUT LOGICIN 1 IN 2 VZ P1 P2 OUT 1 OUT 2 VCC 2

49、 VCC 1 GND PRE DRIVER 1 3281097 4 6 5 IC504: LC709004A-TLM-E I/O-expander for microcontroller Control logic port 0 I/O buffer Serial/parallel converter/shift register I/O control/output register DIN VDD DOUT VSS CLK# CS# RES# P00 P07 214 15 19 3 4 21 2417 port 1 I/O buffer P10 P17 158 2 1 3 VOUT GND VIN + IC505: RH5RE58AA-T1-FA Voltage regulator Vref POINT A-1 XL501 (Pin 23 of IC502)POINT A-2 1 / Pin 1, 2 / Pin 3 of CB501 1CB501 (+5V) POWER ONPOWER OFF CB501 (/RES) 2 1CB501 (+5V) CB501 (/RES) 2 POWER ON IC502: M38039xxxxx Single chip 8-bit m