Arcam-AVR350-ssr-sch 电路图 维修手册.pdf

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1、AVR350 SURROUND SOUND RECEIVER - 11 - KEY PCB LED PCB AUDIO PCB HDMI PCB MAIN PCB MULTI PCB POWER PCB SW PCB PSU PCB RECT PCB PMAIN PCB AMP2 PCB AMP1 PCB TUNER PCB DSP PCB VIDEO PCB PHONE PCB VOL PCB COM PCB CON1 PCB CON2 PCB Toroidal Transformer RS232 PCB SP401 P/N: 1681-7000-A WIRING DIAGRAM Radio

2、Fans.CN 收音机爱 好者资料库 AVR350 SURROUND SOUND RECEIVER - 30 - AVR350 SURROUND SOUND RECEIVER - 31 - SCHEMATIC DIAGRAM 12345678 A B C D 87654321 D C B A GPE International Ltd. DWN.BY: BQ Yang APP.BY: MODEL: AVR350 DATE: 18/JUN/2004 DATE: ISSUE: A1 S-HQ VIDEO SCH SHEET 5 OF 14 XTAL 1 1 XTAL 2 2 XTAL 3 3 AP

3、C Filter 4 C GND 5 CHROMA input 6 V-SEP 7 Sync input 8 Sync output 9 AFC Filter 10 SYNC GND 11 32 fH VCO 12 VP output 13 HD output 14 SCP output 15 Dig GND 16 CP / HP input 17 SYNC VCC 18 SW VCC 19 Y/G output 20 B-Y/B output 21 R-Y/R output 22 ADRS SW 23 SW GND 24 Y2 input 25 B-Y2 input 26 R-Y2 inpu

4、t 27 I2C GND 28 Y1 Input 29 B-Y1 input 30 R-Y1 input 31 Ys 32 SCL 33 SDA 34 DAC TEST 35 GND 36 Y output 37 DAC2 38 DAC1 39 DAC VCC 41 C VCC 42 UV/CbCr SW 43 fsc output 44 1HDL CONT 45 SECAM CONT 46 B-Y/Cb output 47 R-Y/Cr Output 48 Y input 40 U813 TA1270BF R_Y Clam p Det. 1 R-Y to CCD 2 B-Y to CCD 3

5、 R-Y AGC Det. 4 VCC 5 Filter Adj. 6 S.C.P In 7 B-Y AGC Det. 8 PLL Det. 9 Clock 10 Clock In 11 VSS 12 Vin1 13 VDD 14 Vin2 15 Vout2 16 Vob2 17 Vob1 18 Vout1 19 Vgg 20 GND 21 R-Y from CCD 22 B-Y from CCD 23 MODE SW1 24 MODE SW2 25 B-Y In 26 R-Y In 27 B-Y Clam p Det. 28 B-Y Out 29 R-Y Out 30 U822 TA8772

6、AN G 1 2 3 4 VCC 5 6 7 8 U821BA7623F X803 4.433619MHz X804 3.57954MHz C959 12pF C960 12pF DGND DGND GND AGND AGND GND DGND DGND GND GND DGND AGND +9V AGND AGND AGNDAGND GND DGND R965 30KC962 2200pF C961 0.22u/50V SYMAIN2VU SCMAIN2VU C955 47u/16V C956 103 GND +5V C95710u/16VR960 75 C958 470u/10V R962

7、 75 R961 75 R963 75 GND GND C963 0.01uF +9V C966 2.2uF/50V C964 100nF +9V R967 3K C968 22nF C967 2.2u/50V SYNC SEP FILTER AFC FILTER R968 330R X805 B503F30 R969 5.1K R970 8.2K +9V C970 10nF C969 1000u/16V C952 47u/16V C950 10u/16V C949 10u/16V AGND AGND +5V C951 22u/16V R-Y/R1V B-Y/B1V Y/G1V R971 1K

8、 C974 100nF C975 100nF C976 100nF R973 1K O_SD O_CL C965 100nF GND AGND AGND AGND AGND AGND AGND +5V C978 10nF C977 1000u/16V Fsc Q842 A933 R984 100K R978 1k R979 10K R982 27K R983 30K R980 47K R981 270k C918 100nF C919 100nF C979 100nF C980 100nF C985 100nF C986 100nF C987 100nF AGND +9V C984 10nF

9、C983 47uF/16V R974 10k R975 1k C988 10uF/16V C989 100nF +5V C993 10nF C992 47uF/16V Q840 C1740 Q841 C1740 R977 1k R976 1k AGND AGND +5V +5V C990470nF C991470nF C998470nF C997 470nF C994 1uF/16V C995 1uF/16V C996 1uF/16V AGND AGND AGND AGND BY/Cb BY/Cb RY/Cr RY/Cr C981 100nF GND RYout RYout BYout BYo

10、ut R-Y/R1V GND B-Y/B1V Y/G1V 1 2 3 4 5 6 P803B PIN6 1 2 3 45 6 7 8 U819 TK15420M 1 2 3 45 6 7 8 U820 TK15420M R953 10K R946 100 R945 100 R948 10K R950 300 R942 150 R951 300 R952 1K R954 300 R955 300 R956 1K R943 150 RV805 1K RV803 2K RV804 1K R957 10K R958 470 R959 100 R985 1K R944 75 AGND AGND GND

11、C907 47u/16V C954 47u/16V C953 47u/16V -5V -5V +5V AGND C973104 C972104 C971104 WIMA C999 WIMA WIMA WIMA WIMA WIMA L815 100uH C839 100u/16V R990 510R C943 33p C8001 15p L818 27uH C8002 10p R991 1K5 AGND C832 10nF R993 2K R994 10R R992 820 TO U805 PIN19 L814 100uH NF D804 220R R947 R972 1K GND Q9014

12、C114 Q9011 C114 R9018 1K GND +9V +5V 1N4148 D805 RGB from MCU RGB Other SYNC-OFFH LSYNC-ON 3K3 R966 RGB_8V R986 NF C8003 103 RGB _8V S-HQ VIEDO RadioFans.CN 收音机爱 好者资料库 AVR350 SURROUND SOUND RECEIVER - 32 - AVR350 SURROUND SOUND RECEIVER - 33 - HQ_VIDEO 1234 A B C D 4321 D C B A GPE International Ltd

13、. DWN.BY: BQ Yang APP.BY: MODEL: AVR350 DATE:18/Jun/2004 DATE: ISSUE: A1 HQ_VIDEO SCH SHEET 6 OF 14 RED1 1 GREEN1 2 BLUE1 3 GND 4 GND 5 RED2 6 GREEN2 7 BLUE2 8 EN 9 SELECT 10 -V 11 -V 12 BLUE_O 13 GREEN_O 14 RED_O 15 +V 16 U201 LT1675 RED1 1 GREEN1 2 BLUE1 3 GND 4 GND 5 RED2 6 GREEN2 7 BLUE2 8 EN 9

14、SELECT 10 -V 11 -V 12 BLUE_O 13 GREEN_O 14 RED_O 15 +V 16 U202 LT1675 Vin1 1 GND 2 Vin2 3 -V 4 SELECT 5 VOUT 6 EN 7 +V 8 U203 LT1675-1 R285 75 R286 75 R287 75 R288 75 R289 75 R290 75 R291 75 R292 75 R293 75 R295 75 R297 75 R299 75 C299 470U/16V Q299 C114 R280 4K7 C298 10u/16V C297 10u/16V C296 10u/1

15、6V C295 10u/16V C294 10u/16V C293 10u/16V C292 103 C291 103 C289 103 C290 103 C288 103 C287 103 R-Y/R1V B-Y/B1V Y/G1V R284 75 R283 75 R281 75 R275 75 R274 75 1 ZV4ZV5YUV OUT 1VIDEO3 1VIDEO20 00VIDEO1 VIDEO1 VIDEO2 VIDEO3VIDEO OUT 1 2 3 4 5 6 7 8 9 10 P803 TO VIDEO BOARD R279 18K R276 75 R277 75 RED1

16、 1 GREEN1 2 BLUE1 3 GND 4 GND 5 RED2 6 GREEN2 7 BLUE2 8 EN 9 SELECT 10 -V 11 -V 12 BLUE_O 13 GREEN_O 14 RED_O 15 +V 16 U204 LT1675 C286 10u/16V C284 10u/16V C285 103 C283 103 -5V +5V R271 75 R270 75 R269 75 R26875 R26775 R26675 R265 75 R264 75 R263 75 +5V +5V -5V -5V ZV4 +5V ZV5 ZV5 C_VIN C_VIN -5V

17、C_VO C_VIN+5V V_DIRE YUV-DET-U204 V_MU +5V -5V +5V -5V C_VIN C_VIN V_MU V_MU YUVDET ZV5 V_DIRE C_VO ZV4 ZV4 C_VO V_DIRE ZV5 YUVDET GND SELECTOUT 0 1 S-VIDEO to YUV YUV or RGB M201A Cr/Pr M201B Cr/Pr M201C Cb/Pb M201D Cb/Pb M201E Y M201F Y M202A Cr/Pr M202B Cr/Pr M202C Cb/Pb M202D Cb/Pb M202E Y M202F

18、 Y FULL-PAGE10 R-Y/R1V B-Y/B1V Y/G1V 1 2 3 4 5 6 P802 TO VIDEO BOARD L206 2U2H SM VID_GND L207 2U2H SM VID_GND L208 2U2H SM VID_GND C222 22P NPO 0805 C223 22P NPO 0805 C224 22P NPO 0805 C216 270P NPO 0805 C217 270P NPO 0805 C218 270P NPO 0805 C220 330P NPO 0805 C221 330P NPO 0805 C225 330P NPO 0805

19、RadioFans.CN 收音机爱 好者资料库 AVR350 SURROUND SOUND RECEIVER - 32 - AVR350 SURROUND SOUND RECEIVER - 33 - AUDIO 1234 A B C D 4321 D C B A GPE International Ltd. DWN.BY: SZ Lin APP.BY: MODEL: AVR350 DATE:08/DEC/2004 ISSUE: A1 AUDIO SCH SHEET 3 OF 14 SAT_R SAT_L AV_L PVR_L DVD_L DVD_R C3020 10u/16V VSS 1 S1

20、 2 S2 3 S3 4 S4 5 S5 6 S6 7 S7 8 S8 9 S9 10 S10 11 S11 12 GND 13 CK 14 DATA 15 STB 16 S11 17 S10 18 S9 19 S8 20 S7 21 S6 22 S5 23 S4 24 S3 25 S2 26 S1 27 VDD 28 U3001 TC9273-004 R3031 100K R3032 100K C3014 221 C3013 221 R3029 100 R3030 100 R3023 100K R3024 100K C3012 221 C3011 221 R3021 300R R3022 3

21、00R R3019 100K R3020 100K C3010 221 C3009 221 R3017 220 R3018 220 R3015 100K R3016 100K C3008 221 C3007 221 R3013 220 R3014 220 R3011 100K R3012 100K C3006 221 C3005 221 R3009 220 R3010 220 R3007 100K R3008 100K C3004 221 C3003 221 R3005 220 R3006 220 R3003 100K R3004 100K C3002 221 C3001 221 R3001

22、220 R3002 220 R3025 300R Q3001 1241 C3019 10u/16V IN1 1 OUT1 2 GND 3 DATA 4 CLK 5 VCC 6 OUT2 7 IN2 8 U3002 M62429FP R3026 300R A_MU Q3002 1241 CL2 DA5 TC9273-001 DA5 CL3 by 1 bx 2 cy 3 c_o 4 cx 5 INH 6 VEE 7 VSS 8 C 9 B 10 A 11 ax 12 ay 13 a_o 14 b_o 15 VCC 16 U3003 74HC4053 R3037 100K R3038 100K C3

23、016 221 C3015 221 R3035 100 R3036 100 by 1 bx 2 cy 3 c_o 4 cx 5 INH 6 VEE 7 VSS 8 C 9 B 10 A 11 ax 12 ay 13 a_o 14 b_o 15 VCC 16 U300474HC4053 VCRM PVRM A_MU TUN_R TUN_L CD_R VCRM +12V TC9273-001 1 2 3 4 5 6 7 8 9 10 11 12 P302A TO MAIN BOARD P302A CD_L R3041 330 R3042 330 Z3002 4V7 Z3001 4V7 C3022

24、10u/16V C3021 10u/16V C3024 10u/16V C3023 10u/16V -12V +12V +12V -12V C3137 220u/16V C3138 220u/16V DVD_R DVD_L SAT_R SAT_L AV_R AV_L PVR_R PVR_L VCR_R VCR_L CD_R TUN_R CD_L +50VTUN_L C3041 10u/16V R3063 470 1/4W Z3003 5V1 Q3003 1241 Q3004 1241 D3010 1N4148 D3011 1N4148 D3012 1N4148 D3013 1N4148 D30

25、14 1N4148 D3015 1N4148 D3016 1N4148 D3017 1N4148 TAPE_O_L TAPE_O_R CL3 PVRM CL2 DA5 -12V Z_R Z_L Z_L Z_R 84 U3005C OPA2134 84 U3010C OPA2134 VCR_R VCR_L PVR_R AV_R C3052 104 C3051 104 C3054 104 C3053 104 VA301A DVD_L VA301B DVD_R VA301C SAT_L VA301D SAT_R VA301E AV_L VA301F AV_R VA302A PVR_L VA302B

26、PVR_R VA302C PVR_OL VA302D PVR_OR VA302E VCR_L VA302F VCR_R VA303A VCR_OL VA303B VCR_OR VA303C ZONE2_OL VA303D ZONE2_OR TUN_R TUN_L CD_L CD_R TAPE_I_R TAPE_I_L 3 2 1 U3009A NF 5 6 7 U3009B NF R3188 0 ohm R3189 0 ohm R3190 0 ohm R3191 0 ohm VSS 1 S1 2 S2 3 S3 4 S4 5 S5 6 S6 7 S7 8 S8 9 S9 10 S10 11 S

27、11 12 GND 13 CK 14 DATA 15 STB 16 S11 17 S10 18 S9 19 S8 20 S7 21 S6 22 S5 23 S4 24 S3 25 S2 26 S1 27 VDD 28 U3006 TC9273-010 R3119 100K R3120 100K C3110 221 C3109 221 R3117 220 R3118 220 R3115 100k R3116 100K C3108 221 C3107 221 R3113 220 R3114 220 R3111 100K R3112 100K C3106 221 C3105 221 R3109 22

28、0 R3110 220 R3107 100K R3108 100K C3104 221 C3103 221 R3105 220 R3106 220 R3103 100K R3104 100K C3102 221 C3101 221 R3101 220 R3102 220 TC9273-010 DA5CL3 +12V -12V CD_R TUN_R CD_L TUN_L TAPE_I_RTAPE_I_L 1 2 3 4 5 6 7 8 9 10 11 12 P404B TO MUTI BOARD P404A 3 2 1 U3005A OPA2134 C3039 10u/16V 5 6 7 U30

29、05B OPA2134 C3040 10u/16V R3096 20K R3097 10K R3098 20K R3099 10K 1 2 3 4 5 6 7 8 9 10 11 12 P301A TO MAIN BOARD P301A TC9273-010 Analog_L Analog_R TAPE_O_R TAPE_O_L 3 2 1 U3010A OPA2134 5 6 7 U3010B OPA2134 R3080 100R R3079 100R 3 2 1 U3007A OPA2134 5 6 7 U3007B OPA2134 TAPE_I_RTAPE_I_L -12V +12V 8

30、4 U3007C OPA2134 84 U3009C NF C3042 104 C3043 104 C3045 NF C3044 NF R3183 1M0 MFR3184 1M0 MF R3082 1M0 MF R3081 1M0 MF C3050 NF C3049 NF 3 2 1 U3008A OPA2134 5 6 7 U3008B OPA2134 R3095 24KR3094 47K R3092 47K R3093 24K R3185 0R0 0805 R3186 0R0 0805 Not Fitted Not Fitted 84 U3008C OPA2134 C3047 104 C3

31、046 104 C3135 10u/16V C3136 10u/16V TAPE_O_R TAPE_O_L 1 2 3 4 5 6 7 8 P807A TO AUDIO BOARD PVR_L AUX_L AUX_R PVR_R AVR350 SURROUND SOUND RECEIVER - 34 - AVR350 SURROUND SOUND RECEIVER - 35 - OSD 123456789101112 A B C D 121110987654321 D C B A SV804A VCR1IN SV805A VCR2 IN SV806A VCR1 OUT SV807A VCR2

32、OUT MONITOR SV808A GPE International Ltd. DWN.BY: BQ yang APP.BY: MODEL: AVR350 DATE:18/JUN/2004 DATE: ISSUE: A1 OSD SCH SHEET 4 OF 14 C876 10u/16V C874 470u/10V C873 10u/16V C872 470u/10V C871 10u/16V C870 470u/10V C869 2.2u/50V C868 2.2u/50V C867 2.2u/50V C866 2.2u/50V R870 82 R871 82 R872 82 R873

33、 82 GND SV801A DVD IN SV802A SAT IN SV803A AV IN C865 2.2u/50V C864 2.2u/50V C863 2.2u/50V C862 2.2u/50V C861 2.2u/50V C860 2.2u/50V R864 82 R865 82 R866 82 R867 82 R868 82 R869 82 GND G 1 2 3 4 VCC 5 6 7 8 U807 BA7623F G 1 2 3 4 VCC 5 6 7 8 U811 BA7623F G 1 2 3 4 VCC 5 6 7 8 U806 BA7623F Mout 1 GND

34、 2 IN5 3 GND 4 IN4 5 CTLE 6 IN3 7 CTLD 8 CTLC 9 Vout2 10 CTLB 11 IN2 12 Vcc 13 Vout1 14 CTLA 15 IN1 16 U809 BA7625 Mout 1 GND 2 IN5 3 GND 4 IN4 5 CTLE 6 IN3 7 CTLD 8 CTLC 9 Vout2 10 CTLB 11 IN2 12 Vcc 13 Vout1 14 CTLA 15 IN1 16 U818 BA7625 Mout 1 GND 2 IN5 3 GND 4 IN4 5 CTLE 6 IN3 7 CTLD 8 CTLC 9 Vo

35、ut2 10 CTLB 11 IN2 12 Vcc 13 Vout1 14 CTLA 15 IN1 16 U808 BA7625 Mout 1 GND 2 IN5 3 GND 4 IN4 5 CTLE 6 IN3 7 CTLD 8 CTLC 9 Vout2 10 CTLB 11 IN2 12 Vcc 13 Vout1 14 CTLA 15 IN1 16 U812BA7625 VSS 1 X1_IN 2 X1_OUT 3 HSYNC 4 X2_IN 5 X2_OUT 6 VSYINC 7 CS 8 SIN 9 SCLK 10 SECAM 11 525 12 N/P 13 3.58 14 RST

36、15 CV_OUT 16 VDD2 17 CV_IN 18 CVCR 19 SYNC 20 SEPC 21 VSS 22 PD_OUT 23 AMT 24 AMP_O 25 FC 26 VCO_I 27 VCO_O 28 SYNCDET 29 VDD 30 U810 LC74763A X801 14.318M X802 17.734M C80122P C80222P C80322P C80422P C805 22P C80647P C80747P C80847P C809 1u/50V C810 100u/16V C811 100u/16V C887 103 C886 47P C814 474

37、 R8021K R8031K R8041K R8051K R8061K R8071K R8081K R809 1K R810 100K R916 1K R919 3K3 R813 4K7 R814 220 R815 820K R816 1K5 R817 6K8 R818 120 R819 1K R820 47K R821 2K7 Q801 C1740 C812 0.47u/50V C813 1200P C820 682 C815 1u/50V C816 223 C817 22P D801 1N4148 C818 0.47u/50V SYN L8012.2uH C81930P AGND Y Y

38、Y Y YC C C C C C C C Y Y Y Q803 D1468 Q805 D1468 R822 75 R823 75 R824 75 R825 75 R826 75 R827 75 GND VA802B SAT_IN VA801B DVD_IN GND GND VA804B VCR1_IN VA803B AV_IN GND GND VA806B VCR1_OUT VA805B VCR2_IN GND GND VA808B MON VA807B VCR2_OUT GND GND C821 103 C822 103 C823 103 C824 103 C825 0.47u/50V C8

39、27 1000u/6.3V C920 100u/16V C828 10u/16V C829 10u/16V C830 103 C831 103 C833 103 C834 103 C835 103 C836 103 C837 681 C840 103 R831330 L802 100uH L803 100uH L804 100uH L805 100uH O_SD O_CL Mout 1 GND 2 IN5 3 GND 4 IN4 5 CTLE 6 IN3 7 CTLD 8 CTLC 9 Vout2 10 CTLB 11 IN2 12 Vcc 13 Vout1 14 CTLA 15 IN1 16

40、 U801 BA7625 C884 2.2u/50V C883 2.2u/50V C882 2.2u/50V C881 2.2u/50V C880 2.2u/50V C879 470u/10V C934 470u/10V C877 1000u/10V R874 82 R875 82 R876 82 R877 82 R878 82 R879 75 R932 75 R881 75 Q806 D1468 ZV3 ZV1 ZV2 GND 1 2 3 4 5 6 7 8 9 10 P802 P10 GND O_CS O_CLK O_DATA +9V V_MUTE Prog-DETZV1 ZV2 ZV3

41、ZV4 ZV5 GND Q809 A933 Q810 A933 C842 223 C843 223 C844 2.2u/50V C845 10u/16V R838 33K R937 2K2 R840 75 R841 4K7 D802 1N4148 D803 1N4148 Yout2V ZV4 ZV5 GND R842 75 R843 75 GND R846 3K V_DIRE Q812 A933 Q813 A933 C848 223 C851 223 C850 2.2u/50V C849 2u2/16V R848 33K R839 2K2 R849 0 R850 10K D807 1N4148

42、 D808 1N4148 GND -5V R856 560 +5V GND CT_C CT_A CT_E CT_D CT_B GND GND GND GND CT_A CT_B CT_C CT_D CT_E CT_B CT_C CT_A CT_D CT_E GND GND CT_E CT_D CT_C CT_B CT_A R863 150 BIAS 1 VRT 2 VDD1 3 TESTI1 4 VSS2 5 VRB 6 YCIN 7 TEST 8 KILLER 9 TESTI2 10 VDD3 11 TEST2 12 VDD2 13 TESTI3 14 SCL 15 SDA 16 MODE1

43、 17 TESTOUT 18 FSC 19 VDD4 20 VSS4 21 FIL 22 PD 23 VB2 24 YOUT 25 VSS1 26 COUT 27 VB1 28 U805 TC90A69 DGND L806 100uH AGND AGND GND_1GND V_MU O_CLK O_DATA O_CS DGND G 1 2 3 4 VCC 5 6 7 8 U815 BA7623F GND C891 103 C890 103 C893 103 C894 103 C896 103 C897 47u/16V C898 47u/16V C943 47u/16V C947 47u/16V

44、 GND GND GND GND GND C902 2.2u/50V C903 2.2u/50V C904 2.2u/50V C905 2.2u/50V C906 2.2u/50V R883 75 GNDGND V_DIRE 1 2 3 4 5 6 7 8 9 10 P801A PIN10 TO C_VIDEO BOARD C909 103 +5V +5V +5V +5V GND GND AGND AGND +5V +5V GND AGND AGND AGND +5V GND +5V GND +5V AGND DGND DGND +5V +5V +5V +5V C935 470u/10V R9

45、33 75 GND GND +5V G 1 2 3 4 VCC 5 6 7 8 U814 BA7623F C913 103 C927 10u/16V R924 75 C928 470u/10V R923 75 GND GND +5V R935 75 R934 75 YCM IX G 1 2 3 4 VCC 5 6 7 8 U817 BA7623F C908 47u/16V C944 103 GND GND +5V C878 470u/10V R921 75 R922 75 GND C853 2.2u/50V C852 2.2u/50V C854 2.2u/50V G 1 2 3 4 VCC 5

46、 6 7 8 U816 BA7623F C912 103 C929 470u/10V R928 75 GND GND +5V R929 0 GND Mout 1 GND 2 IN5 3 GND 4 IN4 5 CTLE 6 IN3 7 CTLD 8 CTLC 9 Vout2 10 CTLB 11 IN2 12 Vcc 13 Vout1 14 CTLA 15 IN1 16 U803 BA7625 C856 2.2u/50V C855 2.2u/50V C892 103 C900 47u/16V GND +5V C937 103 C945 47u/16V GND +5V C911 103 GND

47、+5V GND C933 470u/10V R930 75 R931 75 GND 1 2 P801 ZONE2_O GND Mout 1 GND 2 IN5 3 GND 4 IN4 5 CTLE 6 IN3 7 CTLD 8 CTLC 9 Vout2 10 CTLB 11 IN2 12 Vcc 13 Vout1 14 CTLA 15 IN1 16 U804 BA7625 C858 2.2u/50V C857 2.2u/50V C859 2.2u/50V C938 103 C946 47u/16V GND +5V R925 75 R926 75 GNDGND C923 2.2u/50V GND

48、 GND V-M U C941 47u/16V C910 103 GND +5V GND GNDGND V_DIRE GNDGND GND Q835 C114 R917 1K R912 10K R911 10K GND +5V GNDGND +5V NAND Q829 C1740 R903 820R R904 820R C915 22pF L808 27uH C914 12pF R828 1.2K R896 12K R829 6.8K C899 47u/16V Q828 C1740 R899 560R R900 560R R889 1.2K R894 560 Q825 A933 Q826 C1

49、740 Q827 A933 R892 100R R890 820R R897 220R 1/4W +5V AGND +10V L812 100uH C930 100u/16V C901 103 GND Q830 C1740 R834 820R R835 820R C917 22pF L809 27uH C916 12pF R832 1.2K R836 12K R833 6.8K Q831 C1740 R901 560R R902 560R R891 1.2K R895 1K2 Q832 A933 Q833 C1740 Q834 A933 R893 100R R905 820R R898 220R 1/4W AGND +10V L813 100uH C826 100u/16V C940 103 GND C921 103 C924 470u/10V R938 75 R939 75 AGND C875 10u/16V R940 33 R941 75 AGND CS OP 1 C VID IP 2 VS OP 3 GND 4 BURST OP 5 Rset 6 OE OP 7 Vcc 8 U802 LM1881 RV801 2K +5V R918 680K C922 103 GNDGND C925 103 C939 103 GND Q822 C114 Q823 C114 R91