AmericanAudio-MX1400DSP-mix-sm 电路图 维修手册.pdf

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1、MODEL NO.: MX-1400 DSP Contents Specification1-2 Block Diagram3 Packing View4 Packing View Part List5 Point To Point Wiring Diagram6 Exploded View7 Exploded View Part List8-9 Electrical Part List10-24 Schematic Diagram25-30 Printed Circuit Board Diagram31-39 IC Block Diagram40-57 Trouble Shooting58

2、SERVICE MANUAL MX-1400 DSP RadioFans.CN 收音机爱 好者资料库 General Specification 1. APPLICATION Model MX-D1400B 2. POWER: AC 115/230V, 50/60Hz, 33Watts. 3. DIMENSIONS: 320(W) x 357(D) x 106(H)mm 4. WEIGHT: 6.3 kgs 5. FEATURES: 1. Feather Fader Plus for Q-Start Control. 2. 3 Phono, 4 Line, 4 Auxiliaries & 3

3、Mic Inputs. 3. Balanced outputs. 4. High quality Feather Fader for smooth, clean cross fades (replaceable). 5. Bass, Mid, and Treble for each channel. 6. 2 Independent Microphones with Separate EQ with combo connection (1/4”/XLR) . 7. BOOTH Output with Bass and Treble Control. 8. Mono/Stereo Switch

4、on Master. 9. High level headphone output. 10. Cue mixing. 11. Split cue for headphones. 12. Talk Over Switch - Reduces channel output Gain by 14dB +/- 2 dB. 13. Three turntable ground connectors. 14. Pre Fader Levels (PFL) for each channel. 15. A/B crossfader assign for each channel. 16. Gain contr

5、ol for each channel. 17. Q-Start Compatible (for use with American Audio CD Players with Fader “Q” Start). 18. Master Level Indicator. 19. Master Output Pan Control. 20. DSP Effects Echo, Auto Pan, Flanger, Manual Filter, Auto Filter, Reverb, Trans, Pitch Shifter. 21. Digital BPM Display. 6. INPUT/O

6、UTPUT IMPEDANCE & SENSITIVITY: (EQ FLAT, MAXIMUM GAIN, FX OFF, LOAD=100K OHM) 6-1. INPUT IMPEDANCE AND REFERENCE LEVEL: LINE: 20K OHM /-14dBV +/-0.1dB (200mV) AUX: 47K OHM /-14dBV +/-0.1dB (200mV) PHONO: 47K OHM /-54dBV +/-0.1dB (2mV) MIC: 10K OHM /-54dBV +/-0.1dB (2mV) 6-2. OUTPUT IMPEDANCE AND LEV

7、EL: REC: 1K OHM /-10dBV (316mV) +/-2dB MASTER UNBAL.: 1K OHM /0dB (1V) +/-2dB MASTER XLR (load=600 ohm): 600 OHM /+4dBm (1.23V) +/-2dB BOOTH (load=600 ohm): 600 OHM /+4dBm (1.23V) +/-2dB PHONES (load=32 ohm) 33 OHM /0dBV (1V) +/-2dB (CUE MIXING AT CENTER) DIGITAL OUT (load=75 ohm): 75 OHM /-16dBfs +

8、/-2dB, 0.5 +/-0.1V P-P. 7. FREQUENCY RESPONSE: (EQ FLAT, MAXIMUM GAIN, FX OFF) LINE, AUX: 20 - 20K Hz +/-2dB PHONO: 20 - 20K Hz +2/-3dB (RIAA) MIC: 20 - 20K Hz +2/-3dB 8. THD + N: (EQ FLAT, MAXIMUM GAIN, FX OFF, W/ 20kHz LPF) LINE, AUX: LESS THAN 0.04% 20 - 20KHz PHONO: LESS THAN 0.15% 1KHz (A-WEIGH

9、TED) MIC: LESS THAN 0.15% 1KHz (A-WEIGHTED) RadioFans.CN 收音机爱 好者资料库 General Specification 9. MAXIMUM INPUT: (1KHz, MASTER OUTPUT, THD=1%, EQ FLAT, FX OFF, MAXIMUM GAIN) LINE, AUX: MORE THAN +4dBV PHONO: MORE THAN -36dBV MIC: MORE THAN -36dBV 10. MAXIMUM OUTPUT: (EQ FLAT, MAXIMUM GAIN, FX OFF, THD=1%

10、) MASTER: MORE THAN +18dBV (8.0V) REC MORE THAN +8dBV (2.5V) PHONES: MORE THAN +3dBV (1.4V) LOAD=32 OHM 11. S/N RATIO: (MAXIMUM GAIN, EQ FLAT, W/20KHz LPF, A-WEIGHTED, FX OFF) LINE, AUX: MORE THAN 80dB PHONO: MORE THAN 66dB MIC: MORE THAN 64dB 12. CROSSTALK: (MAXIMUM GAIN, EQ FLAT, FX OFF, MASTER OU

11、TPUT, W/20KHz LPF, A-WEIGHTED) LINE, AUX, PHONO: MORE THAN 65dB 1KHz BETWEEN L AND R CHANNEL MORE THAN 70dB 1KHz BETWEEN CHANNELS 13. EQ: MIC: 12 +/-2dB, -12 +/-2dB AT 70Hz 12 +/-2dB, -12 +/-2dB AT 1KHz 12 +/-2dB, -12 +/-2dB AT 13KHz CHANNEL: 12 +/-2dB, BELOW -30dB AT 70Hz 12 +/-2dB, BELOW -30dB AT

12、1KHz 12 +/-2dB, BELOW -30dB AT 13KHz 14. CHANNEL BALANCE: Within 3dB 15. FADER KILL: MORE THAN 80dB AT 1KHz FOR CHANNEL FADER AND CROSSFADER 16. MIC TALKOVER: -14 +/-2dB 17. ACCESSORIES (1) AC power cord 1 pc (2) Operating instruction 1 pc 18. NOTES (1) The specifications are subject to change to an

13、y improvement by negotiations in advance. (2) The parts are subject to change to any improvement within the range of the specificatio RadioFans.CN 收音机爱 好者资料库 1 1 2 2 3 3 4 4 DD CC BB AA Title NumberRevisionSize B Date:2007/5/24Sheet of File:C:Documents and Settings.MX-D1400 blk01.schDrawn By: 31 2 1

14、2 12 31 2 31 2 12 31 2 12 31 2 12 31 2 12 31 212 12 12 12 12 12 31 2 31 2 31 2 31 2 12 12 3.3V 5V 15V -15V MIC1 IN CH1 GAIN CH2 GAIN CH3 GAIN CH4 GAIN CD PLAY CONTROL KEYS & SWITCHES VRS & SWITHES DRIVERS DSP CODAC ROM CLOCK CUE PANCUE LEVEL HEAD PHONES MASTER TRIM MUTE CONTROL REC OUT MASTER OUT XL

15、R OUT MAIN CPU CUE1 CUE2 CUE3 CUE4 CUE FX MONO/ST MASTER FADER ATT.MUTE MUTE MASTER MUTE POWER SUPPLY POWER SW POWER TRANS. MIC1 GAIN CH1 VCA CH2 VCA CH4 VCA CH3 VCA CH1 CH2 CH3 CH4 MIC1 FX IN BOOTH LEVEL 31 2 CH1 FADER 31 2 CH2 FADER 31 2 CH3 FADER 31 2 CH4 FADER MASTER 1 2 C1 A 1 2 C1 A 1 2 C1 A 1

16、 2 C1 A 1 2 C1 A TALKOVER5 6 C3 C LED LEDS DRIVER LEVEL METER 31 2 BAL. LPF LPF LPF LPF PH1 LINE1 RIAA AMP BUFFER C1 3 2 1 4 5 6 7 8 A C1 3 2 1 4 5 6 7 8 A C1 3 2 1 4 5 6 7 8 A C1 3 2 1 4 5 6 7 8 A PH2 LINE2 RIAA AMP BUFFER PHONO3 LINE3 BUFFER LINE4 BUFFER LC78211 LC78211 LC78211 LC78211 RIAA AMP C1

17、 1 2 3 4 A DRIVER LCD LCD MIC3 IN RUMBLE FILTER CIRCUIT BUFFER BUFFER CUE MASTER BUFFER AC INLET FX OUT LC78211 FX ON FX OFF 56362 UDA1345TS W29C9C011A RAM 16105 74595 LC75834E TMP86FS49 LB1423 M51132L M51132L M51132L M51132L AMP AMP AMP AMP AMP AMP AMP AMP AMP AUX4 BUFFER 31 2 31 2 31 2 HI MID LO H

18、PF LPF HPF LPF DRIVER LED LEVEL METER LB1423 31 2 31 2 31 2 HI MID LO HPF LPF HPF LPF DRIVER LED LEVEL METER LB1423 31 2 31 2 31 2 HI MID LO HPF LPF HPF LPF DRIVER LED LEVEL METER LB1423 31 2 31 2 31 2 HI MID LO HPF LPF HPF LPF DRIVER LED LEVEL METER LB1423 31 2 CROSSFADER C1 1 2 3 A 31 2 MIC2 IN MI

19、C2 GAIN AMP AMP 31 2 MIC TRIM 31 2 MIC EQ 31 2 12 MIC2 1 2 C1 A CODAC UDA1345TS 12 CUE MASTER 1 2 C1 A C1 1 2 3 4 5 A BOOTH OUT DIGITAL OUT ADC TRANSMITTER CS5331A CS8405 FUSE 1 2 C1 A POWER SEL. CF CONTROL 74HC04 FX ON SPLIT CUE BOOTH SEL. CH ASSIGN 31 2 CF CURVE CIRCIUT 31 2 AMP LEDS C1 1 2 3 4 5

20、A L 3 R 2 G 1 MX-1400DSP 0.1BLOCK DIAGRAM LEC P003 P002 P001 P002 P001 P002 P001 P002 P001 P002 P001 P003 P002 P001 P003 P002 P001 P002 P001 P003 P002 P001 P002 P001 P003 P002 P001 P002 P001 P003 P002 P001 P002 P001 P003 P002 P001 P002 P001 P002 P001 P002 P001 P002 P001 P002 P001 P002 P001 P003 P002

21、 P001 P003 P002 P001 P00A P00B P00C P003 P002 P001 P002 P001 P003 P002 P001 P002 P001 P002 P001 P002 P001 P002 P001 P00A P00K P002 P001 P005 P004 P003 P002 P001 P00B P00C P00E P00B P00C P00E P00B P00C P00E P003 P002 P001 P003 P002 P001 P003 P002 P001 P003 P002 P001 P0A01 P0A02 P0A0C1 P0A01 P0A02 P0A

22、0C1 P0A01 P0A02 P0A0C1 P0A01 P0A02 P0A0C1 P0A01 P0A02 P0A0C1 P003 P002 P001 P002 P001 P002 P001 P0A01 P0A02 P0A03 P0A04 P0A05 P0A06 P0A07 P0A08 P0A0C1 P0A01 P0A02 P0A03 P0A04 P0A05 P0A06 P0A07 P0A08 P0A0C1 P0A01 P0A02 P0A03 P0A04 P0A05 P0A06 P0A07 P0A08 P0A0C1 P0A01 P0A02 P0A03 P0A04 P0A05 P0A06 P0A

23、07 P0A08 P0A0C1 P002 P001 P002 P001 P002 P001 P002 P001 P002 P001 P0A01 P0A02 P0A03 P0A04 P0A0C1 P0AC INLET 01 P0AC INLET 02 P002 P001 P003 P002 P001 P003 P002 P001 P003 P002 P001 P00A P00K P00A P00K P003 P002 P001 P003 P002 P001 P003 P002 P001 P00A P00K P00A P00K P003 P002 P001 P003 P002 P001 P003

24、P002 P001 P00A P00K P00A P00K P003 P002 P001 P003 P002 P001 P003 P002 P001 P00A P00K P00A P00K P003 P002 P001 P0A01 P0A02 P0A03 P0A0C1 P003 P002 P001 P003 P002 P001 P003 P002 P001 P003 P002 P001 P002 P001 P0A01 P0A02 P0A0C1 P0CUE MASTER01 P0CUE MASTER02 P0A01 P0A02 P0A0C1 P0A01 P0A02 P0A03 P0A04 P0A

25、05 P0A0C1 P002 P001 P0FUSE01 P0FUSE02 P0A01 P0A02 P0A0C1 P003 P002 P001 P003 P002 P001 P00A P00K P0A01 P0A02 P0A03 P0A04 P0A05 P0A0C1 P003 P002 P001 P0C05 P0C06 P0C0C3 P001 P002 P001 P002 P003 P0A04 P005 P0C06 P0A07 P0A08 P00A P00B P00C P0A0C1 P0C0C3 P00E P00K P001 P002 P001 P002 P003 P0A04 P005 P0C

26、06 P0A07 P0A08 P00A P00B P00C P0A0C1 P0C0C3 P00E P00K Packing View 1 3 24 6 5 4 Packing View Part List NO.PART NAMEPART NO.QTYREMARK 1POLYFOAM L506-MX1400-483L1 2POLYFOAM R506-MX1400-483R1 3SOFT BAG(450*460+120mm)509-RMX40-1641 4AC POWER CORD(L=1900mm+/-50mm,VDE,TYPE) 409-DJ2-070A1 5I/B ASSY701-1400

27、DSPB-39711 6GIFT BOX(454*413*138mm)507-MXD1400-25521 5 Point to Point Wiring Diagram CN903 IC003 IC001 CN901B IC002CN01 CN901A CN604 CN02CN03CN01 CN902 W903 CN721 CN401 POWER PCB IO PCB ADAPTOR PCB EQ PCB PHONE PCB AUX PCB MIXER PCB W901A W721 W902 CN504 CN507 W504 W507 W901B CN606B CN606A CN503 W50

28、3 W602 CN602 CN02 CN702A W702A W01 CN01 6 Exploded View 7 Exploded View Part List REF NO.DESCRIPTIONPART NO.QTYREMARK 1FRONT PANEL ASSY703-MXD1400-11021 1-1THROW BOARD100-Q3433-22096 1-2KNOB FRAME100-MX1400-22231 1-3PROJECTION RING100-QFX-243012 1-4FRONT PANEL300-1400DSP-1433A1 1-5HIMILON612-HDJ100-

29、0457 2IO PCB ASSY704-1400DSP-66301 3POWER PCB ASSY704-1400DSP-69371 4JACK PCB ASSY704-1400DSP-66381 5IC PCB ASSY704-1400DSP-69041 5-13P SOCKET(P=2.5mm,RED)404-HT8015-3281 5-23P SOCKET(P=2.5mm,BLUE)404-HT8015-3291 5-33P SOCKET(B3B-XH-A,P=2.5mm,180DEGREE)404-HV3500K-623A1 5-4IC PCB(BARE,94V0,140*121.5

30、*1.6t)405-MACH2-18801 5-5IC(NJM-7815FA,TO-220F)417-DV330-2161 5-6IC(NJM-7915FA,TO-220F)417-RCC955A-2911 5-7IC(BA05T,TO-220FP)417-CDN34A-3141 5-8HEAT SINK425-M2-0951 5-9ISOLATION(PC,140*16.5*0.3t)501-M2-19841 5-10SCREW(SAE1018,BTB,3*L8)602-HP1010K-1753 6FRONT BOARD & MIXER ASSY704-1400DSP-69171 6-1FR

31、ONT BOARD ASSY703-MX1400-11031 6-2CROSS FADER PCB ASSY704-D40-52871 6-3AUX PCB ASSY704-1400DSP-66371 6-4PHONE PCB ASSY704-1400DSP-66401 6-5MIXER/TRANSFER/EQ/MIC/LED PCB ASSY704-1400DSP-69031 6-6KNOB100-RMX40-22221 6-7SLEEVE(6*10.2L)200-HPR1-3311 6-8NUT200-MX1400-5302 6-9SCREW(3*5 P=0.5)602-B300-0412

32、0 6-10SCREW(SAE1018,PTP,M3*10)602-MK7-1311 6-11SCREW(SAE1018,ISOB,3*L8*P0.5)602-HP1010K-1785 6-12SCREW(SAE1018,BTB,3*L5)602-QMX2BPM-3221 6-13WASHER606-SMX2-2251 7AC JACK ASSY704-1400B-69361 8PUSH KNOB100-QFX-1736A8 9JACKET FOR SW(PLASTICS MOLD)100-HPR1-20691 10PUSH KNOB100-QFX-243112 11ROTATE KNOB10

33、0-1400DSP-244122 12ROTATE KNOB100-MX1400-24416 13JOG TUNING KNOB100-QFX-24427 14GROUND PIN200-DJ100-2313 15BRACKET TRANSFORMER300-DV300B-4432 8 Exploded View Part List REF NO.DESCRIPTIONPART NO.QTYREMARK 16VR BOARD300-QD1PRO-6951 17FIXED PLATE300-QMX2BPM-6961 18VR SHEATH300-SCX2-11251 19BOTTOM BASE3

34、00-MX1400-1152C1 20SLIDE SW(L21-22A8,6PIN)403-HS100-0421 21POWER SW(MR-22-N4BB-F2)403-DJ1-107A1 22AC POWER CORD(L=1900mm+/-50mm,VDE,TYPE)409-DJ2-070A1 23TRANSFORMER411-1400-5761 24AC SAFETY CAPACITOR(0.01uF/250V,M,BULK,Y5V) 413-S250-7471 25RCA ADAPTOR PLUG(A028)420-Q3433-1066 26LABEL(BARE,36*8mm,t=1

35、.2mm)501-DV300-10670 27FUSE LABEL(46*6mm,t=0.08mm)501-PRODJ2-1298A1 28PROTECTIVE SHEET501-QMX2BPM-13741 29RATING LABEL ( 30*16mm,t=0.08mm )501-MXD1400A-14591 30DECORATION501-MX1400-16491 31SPACER SUPPORT(SCB-5.5,WHITE,H=5.5)504-HDJ2000-0874 33NUT(M4*P0.7,3t)601-F200-0012 34FOOT604-MCX-3844 35PVC TUB

36、E(4.7,L=15,BLACK)605-HS100-0393 36WASHER606-HV3360-0912 37WASHER(8*3.2*1t,NI)606-Q2221-1223 38HIMILON612-HDJ100-0451 39CUSHION(26*10mm,t=0.5mm)612-Q2422-1035 40SCREW(3*5 P=0.5)602-B300-0412 41SCREW(SAE1018,PTP,M3*10)602-MK7-13117 42SCREW(SAE1018,ISOB,3*L8*P0.5)602-HP1010K-1785 43SCREW(SAE1018,BTB,3*

37、L5)602-QMX2BPM-32220 44SCREW(SAE1018,ISOP,M3*5L*P0.5)602-MP3-3242 45SCREW(SAE1018,STN4*L10*P0.7)602-HDJ9700-4262 46SCREW(SAE1018,STB,4*L8*P0.7)602-BEAT4-4404 47SCREW(CTF,3*7)602-AKS4-496A13 48SCREW(SAE1018,STB,3*L7*P0.5)602-STB3007-6192 49LABEL(110*5mm,t=0.25mm)501-HPR1-16841 9 Mixer/Adaptor/Eq/Mic/

38、Led PCB Assy Part List REF NO.DESCRIPTIONPART NO.QTYREMARK MIXER/ADAPTOR/EQ/MIC/LED PCB ASSY704-1400DSP-69031 VR SHEATH300-SCX2-11251 SCREW(3*5 P=0.5)602-B300-0418 WASHER606-SMX2-2251 VFD WASHER612-HV3700K-0591 EQ PCB ASSY704-1400DSP-66311 W01 9P 2.0 CONNECTOR WIRE(L=80mm,+/-,UL1007#26 TS WHITE*8 RE

39、D)404-1400-26001 CN102A,CN202A,CN302A,CN402A 12P FFC SOCKET404-4001-22354 CN101,CN2014P SOCKET(S4B-PH-K,P=2mm,JST,90 DEGREE)404-DCM270E3-8782 CN301,CN4013P SOCKET(S3B-PH-K,P=2mm,JST,90 DEGREE)404-HMD5000-7842 C135,C136,C157,C158,C1 61,C162,C235,C236,C257, C258,C261,C262,C335,C3 36,C357,C358,C361,C36

40、2, C435,C436,C457,C458,C4 61,C462 POLYESTER CAPACITOR(0.01uF/50V,J,TAPING)413-3113-05724 C442,C443,C444,C141,C1 42,C143,C144,C241,C242, C243,C244,C341,C342,C3 43,C344,C441 POLYESTER CAPACITOR(0.0022uF/50V,J,TAPING)413-3113-05916 C137,C138,C237,C238,C3 37,C338,C437,C438 POLYESTER ACPACITOR(0.056uF/50

41、V,J,TAPING)413-HT8015-1688 C149,C150,C151,C152,C2 49,C250,C251,C252,C349, C350,C351,C352,C449,C4 50,C451,C452 POLYESTER CAPACITOR(0.022uF/50V,J,TAPING)413-KT300-10116 C155,C156,C163,C164,C2 55,C256,C263,C264,C355, C356,C363,C364,C455,C4 56,C463,C464 POLYESTER CAPACITOR(0.1uF/100V,J,TAPING)413-KT350-

42、08916 C145,C146,C245,C246,C3 45,C346,C445,C446 POLYESTER CAPACITOR(0.001uF/100V,J,TAPING)413-PMSE1-2798 C127,C128,C175,C227,C2 28,C275,C327,C328,C375, C427,C428,C475 ELEC. CAPACITOR(1uF/50V,M,105,TAPING 4*7,MINI)(Cd,Pb,Hg,Cr413-SPPW3-23412 C173,C174,C273,C274,C3 73,C374,C473,C474 ELEC. CAPACITOR(22u

43、F/16V,M,105,TAPING 4*7,MINI)(Cd,Pb,Hg,C413-SPPW3-2368 C147,C148,C247,C248,C3 47,C348,C447,C448 POLYESTER CAPACITO(0.0056uF/100V,J,TAPING)413-SPPW3-2998 R173,R273,R373,R473CARBON FILM RESISTOR(22K OHM,1/6W,J,T-26)412-3113-0594 R144,R244,R344,R444CARBON FILM RESISTOR(4.3K OHM,1/6W,J,T-26)412-HC1421FR-

44、2454 R127,R227,R327,R427CARBON FILM RESISTOR(5.1K OHM,1/6W,J,T-26)412-KM281-2944 EQ PCB405-1400DSP-18641 R128,R228,R328,R428CHIP RESISTOR(5.1K OHM,1/10W,0603,J,TP ,50V)412-007USB-6734 R133,R134,R233,R234,R3 33,R334,R433,R434 CHIP RESISTOR(27K OHM,1/10W, 0603,J,TP,50V)412-007USB-6758 10 Mixer/Adaptor

45、/Eq/Mic/Led PCB Assy Part List REF NO.DESCRIPTIONPART NO.QTYREMARK R145,R245,R345,R445CHIP RESISTOR(18K OHM,1/10W, 0603,J,TP,50V)412-007USB-7034 R174,R274,R374,R474CHIP RESISTOR(22K OHM,1/10W,0603,J,TP ,50V)412-007USB-7044 R237,R337,R437,R137CHIP RESISTOR(4.3K OHM,1/8W,J,TP 1206,50V)412-100-8994 R13

46、5,R136,R235,R236,R3 35,R336,R435,R436 CHIP RESISTOR(27Kohm,TP 1206 150V)412-1400-12148 R139,R140,R239,R240,R3 39,R340,R439,R440 CHIP RESISTOR(43Kohm,TP 1206 150V)412-1400-12158 R341,R342,R441,R442,R1 41,R142,R241,R242 CHIP RESISTOR(8.2Kohm,TP 1206 150V)412-1400-12168 R146,R147,R148,R246,R2 47,R248,R

47、346,R347,R348, R447,R448,R446 CHIP RESISTOR(18Kohm,TP 1206 150V)412-1400-121712 R151,R152,R251,R252,R3 51,R352,R451,R452 CHIP RESISTOR(62Kohm,TP 1206 50V)412-1400-12188 R153,R154,R253,R254,R3 53,R354,R453,R454 CHIP RESISTOR(12Kohm ,TP 1206 150V)412-1400-12198 R149,R249,R349,R449CHIP RESISTOR(6.2Kohm

48、,TP 1206 150V)412-1400-12204 R131,R132,R150,R231,R2 32,R250,R331,R332,R350, R431,R432,R450 CHIP RESISTOR(6.2KOHM,1/10W,F,TP 0603,50V)412-900-98412 R125,R126,R225,R226,R3 25,R326,R425,R426 CHIP RESISTOR(100K OHM,1/10W,0603 ,J,TP ,50V)412-CDVD2001-5378 R138,R143,R238,R243,R3 38,R343,R438,R443 CHIP RESISTOR(4.3K OHM,1/10W,0603,J,TP ,50V)412-DCM280-7228 R129,R130,R171,R172,R2 29,R230,R271,R272,R329, R330,R371,R372,R429,R4 30,R471,R472 CHIP RRESISTOR(20K OHM,1/10W,0603,J,