Hammond-Suzuki XK-1 Keyboard 电路图.pdf

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1、SERVICE MANUAL SUZUKI MUSICAL INST.MFG.CO.,LTD. 25-12,RYOKE 2-CHOME,HAMAMATSU, JAPAN HAMMONDHAMMOND XK-1XK-1 CAUTION ! See safety notice inside JUL.2006 RadioFans.CN 收音机爱 好者资料库 Great care has been taken in the design and manufacture of this product to assure that no shock hazard exists on any expose

2、d metal parts. Internal service operations can expose the technician to hazardous line voltages and accidentally cause these voltages to appear on exposed metal parts during repair or reassembly of product components. To prevent this, work on these products should only be performed by those who are

3、thoroughly familiar with the precautions necessary when working on this type of equipment. To protect the user, it is required that all enclosure parts and safety interlocks be restored to their original condition and the following tests be performed before returning the product to the owner after a

4、ny service operation. Plug the AC line cord directly into a line voltage AC receptacle (do not use an isolation transformer for this test) and turn the product on. Connect the network (as shown below) in series with all exposed metal parts and a known earth ground such as a water pipe or conduit. Us

5、e an AC Voltmeter of 5,000 ohms per volt or higher sensitivity to measure the voltage drop across the network. Move the network connection to each exposed metal part (metal chassis, screw heads, knobs and control shafts, escutcheon, etc.) and measure the voltage drop across the network. Reverse the

6、line plug and repeat the measurements. Any reading of 4 volts RMS or more is excessive and indicates a potential shock hazard which must be corrected before returning the product to the user. SAFETY NOTICE CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or

7、equivalent type recommended by the equipment manufacturer. Discard used batteries according to manufacturers instructions. Advarsell Lithiumbatteri. Eksplosionsfare ved fejlagtig hndering. Udskiftning m kun ske med batteri as samme fabriket og type. Lebr det brugte batteri tilbage til leverandoren.

8、Norge: ADVARSEL Lithiumbatteri - Eksplosjonsfare. Ved utskiftning benyttes kun batteri som anbefalt av apparatfabrikanten. Brukt batteri returneres apparatleverandoren. Sverige: VARNING Explosionsfara vid felaktigt batteribyte. Anvnd samma batterityp eller et ekvivalent typ som rekommenderes av appa

9、rattillverkaren, Kassera anvnt batteri enlig fabrikantens instruktion. Finland: VAROITUS Paristo voi rjht, jos se on virheeliseeti ansennettu Vaihda paristo ainoastaan laitevalmistajan suosittelemaan tyyppoonn, Hvit kytetty paristo valmistajan ohjeiden mukaisesti. VOM AC SCALE 10K 2W 0.01MF CERAMIC

10、RF BYPASS CAP TEST CLIPS CONNECTED TO KNOWN EARTH GROUND TEST PROBE TO EXPOSED METAL PARTS RadioFans.CN 收音机爱 好者资料库 XK-1 -Table of Contents- 1.SPECIFICATIONS 2.BLOCK DIAGRAM 3.TEST AND ADJUSTMENT 4.WIRING CONNECTION 5.WIRING CHART 6.PRINTED WIRING BOARD ASSY LIST 7.SCHEMATICS MGH-94A 1/99/9 SWH-510A

11、SWH-511A SWH-512A 8.PARTS LIST 9.DISASSEMBLING PROCEDURE 10.WARNING 11.TECHNICAL DESCRIPTION 12.RESET AND SOFTWARE VERSIONS 1 2 3 4 5-1,5-2 6 7-1 7-9 7-10 7-11 7-12 8-18-6 9 10 11-1,11-2 12 1.Specifications XK-1 1 Combination Presets Controllers Display Storage MIDI Connections Dimension Weight Soun

12、d Generator Keyboard Combination Presets Controllers Display Storage MIDI Connections Dimension Weight Sound Generator Keyboard Harmonic Drawbars Drawbar Select Tabs Waveform PercussionPercussion Tabs Adjustable Extra Voice Tuning Extra Voice Tuning Master Transpose Internal Leslie EffectsEffects Ov

13、erdrive Equalizer Reverb Sustain Tabs Adjustable Switches Rotary Controllers Wheels Internal ZoneInternal Zone Vibrato and Chorus Knobs Master Volume, Overdrive, Tone Pitch Bend, Modulation 20-characters, 2 lines with 9 control switches and Rotary encoder None Templates : 3 modes Zoned 3 parts and k

14、eyboard Ch. AC Inlet MIDI In 1, In 2, Out Exp.Pedal (Phone Jack), Foot Switch, Line Out L / Mono, R, Headphones, 8-pin Leslie 116 (W) x 33.4 (D) x 11(H) cm 13.5 kg 2 x VASE3 as Digital Tone-wheels 61 notes Water Fall type with Velocity 9 Pitches Upper, Pedal, Lower B-type/ Mellow/ Brite (Upper and L

15、ower) Muted/ Normal / Synth 1/ Synth 2 (Pedal) Second On, Third On, Fast Decay, Soft Touch, Velocity, Decay (Fast, Slow), Level (Soft, Normal) 8 Instruments 430 - 450 1Hz Steps -6 - 0 - +6 semitones On, Fast, Brake Digital, 2 Rotors V1, V2, V3, C1, C2, C3 Digital Overdrive 3 Bands 10 Programs 5 Leng

16、ths (Pedal) Split, Manual Bass Map Low, High Split Point, Lower Octave, Pedal Top Key 12 banks x 11 Numbers + Adjust Switchable : Link / Independent Power On / Off Upper & Lower On / Off Speed : 5 (6.10 - 7.25 Hz) 20LINE * 2 LCD UNIT +5V AC IN 100 - 240V 50/60 Hz EXP. PEDAL V-20R HEADPHONES LINE OUT

17、 L/MONO LINE OUT R LESLIE 8-PIN FOOT SWITCH FS-9H MAIN CPU & GENERATOR MGH-94A U29 VASE3 MASTER 64POLY TONE GENERATOR U32 WAVE ROM U30 VASE3 SLAVE 64POLY TONE GENERATOR U1 MAIN CPU HD6417144 (SH-2) U41 KEYSCAN CPU HD64F3024F (H8) U14 16M FLASH U15,U44 512k*8 SRAM U11 RESET IC BT1 CR2032 (3V) U26 DC-

18、DC R1224N (+3.3V) U27 DC-DC R1224N (+1.26V) U9 4580M OPAMP U10 4556M OPAMP U43 SWITCHED CAPACITOR VOLTAGE CONVERTER LT1054CDW (+8V,-8V) +1.26V +3.3V +8V -8V RESET DETECT, FAST, SLOW 12.5MHz 25MHz 50MHz SWH-512A ENDBLOCK (VIBRATO, LESLIE) SWH-510A PANEL L (MASTER VOLUME, CONTROL, TONE, REVERB etc) SW

19、H-511A PANEL R (PRESET, MENU, PLAY etc) +3.3V +5V+5VAN U7 4580M OPAMP +5VAN -8V U8 4580M OPAMP +5VAN -8V-8V +8V +5VAN U28 DAC PCM1791ADB 2.BLOCK DIAGRAM U19 128Kx16bit SRAM 61KEYS KEYBOARD DRAWBARS SWITCHING POWER SUPPLY JRC AES10-5 POWER SWITCH MODULA TION PITCH BENDER P1 P51 J107 J110 J106J104 J11

20、5 J105 J111 J103J114J113 MIDI OUT MIDI IN1 MIDI IN2 J115 MASTER VOLUME JACK4 JACK6 JACK5 JACK7 JACK2 JACK3 JACK1 U2 DSP LESLIE EFFECT TONE/ EXP REVERB EFFECT OVER DRIVE VIBRATO CHORUS 25MHz UNBAL LPFLINE AMPH.P. AM +5V +5V XK-1 XK-1 XK-1 3.TEST AND ADJUSTMENT XK-1 DRAWBAR ASSY SWH-510A J202J201 SWH-

21、512A J401 WR-HZ133-A WR-HZ133-B WR-HZ133-C WR-HZ133-D WR-HZ133-E LCD UNIT SC2002AUOT-SOGB-XXX SWH-511A J301 WHEEL ASSY POWER SWITCH AC INLET Ferrite core TFT-152613N with TFB-2024RS P51P1 SWITCHING POWER SUPPLY AES10-5 MGH-94A J114 J113 J103 J111J105J104J106 J110 J107 J115 FATAR KEYBOARD TP/8O 02,01

22、81-A2661333002,0182-A26613340 WR-HZ133-F WR-HZ133-GWR-HZ133-H WR-HZ133-J WR-HZ133-J 4.WIRING CONNECTION XK-1 XK-1 5.WIRING CHART XK-1 PLUGFROMTO PLUGWIRETO PWBFUNCTION No.PIN No. & PIN NO. COLORNAME PLUGFROMTO PLUGWIRETO PWBFUNCTIONJ1101DB-1 WHTDB-209GND No.PIN No. & PIN NO. COLORNAME22BLK4 J10311RE

23、DLCD UNITVSS33BLK2 22VDD44BLK1 33VO55BLK1 3/5 44RS66BLK8 55R/W77BLK16 66E88BLK1 1/3 77DB099BLK2 2/3 88DB11010BLK5 1/3 99DB21111BLK+3.3V 1010DB31212BLKNC 1111DB4J1111 M-3, P-1YELWHEEL+3.3V 1212DB52P-2REDASSYPITCH 1313DB63M-2 WHTMOD 1414DB74 M-1, P-3BLKGND 1515AJ1131L-1REDKEYBOARDKCOM0 1616K22DK0 J104

24、1J201-1BRNSWH-510ACOM033KCOM1 22REDCOM144DK1 33ORGCOM255KCOM2 44PNKCOM366DK2 55GRNCOM477KCOM3 66BLUGSW088DK3 77VIOGSW199KCOM4 88GRYGLED01010DK4 99 WHTGLED11111KCOM5 1010YEL+3.3V1212DK5 1111BRNO.D.1313KCOM6 1212REDTONE1414DK6 1313BLKGND1515KCOM7 J1051J301-1 ORGSWH-511AGLED41616DK7 22PNKGLED3J1141H-1R

25、EDKEYBOARDKCOM0 33GRNGLED222DK8 44BLUGSW533KCOM1 55VIOGSW444DK9 66GRYGSW355KCOM2 77 WHTGSW266DK10 88BRNCOM077KCOM3 99REDCOM188DK11 1010ORGCOM299KCOM4 1111PNKCOM31010DK12 1212GRNCOM41111KCOM5 1413BLUROT A1212DK13 1314VIOROT B1313KCOM6 1515BLKGND1414DK14 J1061J401-1BRNSWH-512AGSW51515KCOM7 22REDGLED11

26、616DK15 33ORGCOM0J1151J202-1BLKSWH-510AAGND 44YELCOM122 WHTOUT L 55GRNCOM233REDOUT R 66BLUCOM344 WHTIN L 55REDIN R 77VIOCOM466BLKAGND 88GRYGSW6 99 WHTGLED5 J1071P51-1BLKPOWERDG 22BLKSUPPLYDG 33YEL+5V 44YEL+5V 5-1 MAIN MGH-94A XK-1 PLUGFROMTO PLUGWIRETO PWBFUNCTION No.PIN No. & PIN NO. COLORNAME PLUG

27、FROMTO PLUGWIRETO PWBFUNCTION No.PIN No. & PIN NO. COLORNAME J2011J104-1BRNMGH-94ACOM0 22REDCOM1 33ORGCOM2 44PNKCOM3 55GRNCOM4 66BLUGSW0 77VIOGSW1 88GRYGLED0 99 WHTGLED1 1010YEL+3.3V 1111BRNO.D. 1212REDTONE 1313BLKGND J2021J115-1BLKMGH-94AAGND 22 WHTIN L 33REDIN R 44 WHTOUT L 55REDOUT R 66BLKAGND J3

28、011J105-1 ORGMGH-94AGLED4 22PNKGLED3 33GRNGLED2 44BLUGSW5 55VIOGSW4 66GRYGSW3 77 WHTGSW2 88BRNCOM0 99REDCOM1 1010ORGCOM2 1111PNKCOM3 1212GRNCOM4 1313BLUROT A 1414VIOROT B 1515BLKGND J4011J106-1BRNMGH-94AGSW5 22REDGLED1 33ORGCOM0 44YELCOM1 55GRNCOM2 66BLUCOM3 77VIOCOM4 88GRYGSW6 99 WHTGLED5 5-2 END B

29、LOCK SW SWH-512A PANEL SW L SWH-510A PANEL SW R SWH-511A 6.PRINTED WIRING BOARD ASSY LIST XK-1 FUNCTIONPWB.NAMEPART No. MAINMGH-94A00228-25216 PANEL LSWH-510A00225-42236 PANEL RSWH-511A00225-42241 ENDBLOCKSWH-512A00225-42246 -6- XK-1 00228-25216 MGH-94A(1/9) XK-1 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A

30、12 A13 A14 A15 A16 A17 D0 D1 D2 D3 D4 D5 D6 D7 R1 10 C1 10u/50V D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15for Debugger JP3 R16 10k R17 10k A16 A17 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 D11 D12 D13 D14 D15 R18 10k C3 0.1u C4 0.1u C6 15p C7 15p

31、 X1 12.5MHz CS1 C2 10u/50V WRH CS0 CS2 CS3 CS0 RD WRH RD CPU SYSTEM R790 FWP Normal A18 TEST1 R83 3300R100 220 C8 0.1u C95 470p RESET DSP_CE MUTE LCD R/W EXPIN A18 RD R110 560 BT1 ( CR2032 3V ) R111 4700 R112 22K Vbat 2 Vin 3 RESE OUT 5 RESE OUT 7 CS OUT 8 Vout 1 GND 6 Ct 4 U11M62023FP C96 4.7uF/50V

32、 LLA C97 4.7uF/50V LLA HL32-A2 V BATT M CSB M CSB RESET M CSB KEYSCAN_CE LCD RS MIDI OUT R20 10k R21 10k A0 LM MIDI IN KEY TXD1 KEY RXD1 LM MIDI IN KEY IREQ MIDI OUT KEY IREQ BAT DETCT BAT DETCT A20 A19 A19 A20 Q1 2SC4116GR C9 0.1u KEYSCAN_CE PIN_CE DSP_CE V BATT EXPIN A 1 B 2 C 3 E1 4 E2 5 E3 6 Y0

33、15 Y1 14 Y2 13 Y3 12 Y4 11 Y5 10 Y6 9 Y7 7 Vcc 16 GND 8 U12 74LV138APW CS3 A20 A19 M_VASE_CE S_VASE_CE C98 0.1u A21 M CSB LCD_CE POUT_CE D0.15 D0.15 RAM Vcc S RAM CE S RAM CE A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 M_VASE_BUSY S_VASE_BUSY C99 0.01u C100 0.1u TEST2 TEST3 TES

34、T4 TEST5 TEST6 TEST7 TEST8 TEST9 TEST10 LCD RS AMUTE M_VASE_BUSY S_VASE_BUSY A19 2 1 COM 3 D1 1SS181 C14 0.1u RAM Vcc S RAM CE S RAM CE A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 D0 D1 D2 D3 D4 D5 D6 D7 RD R22 10K C13 0.1u KEY TXD1 KEY RXD1 R115 100 R116 100 WRH LCD_CE WRH ANSEL0 ANS

35、EL1 A0.17 A0.17 R23 10K 1 2 3 U4A 74LV32APW MUTE PC0/A0 4 PC1/A1 5 PC2/A2 6 PC3/A3 7 PC4/A4 8 PC5/A5 9 PC6/A6 10 PC7/A7 11 PC8/A8 12 PC9/A9 13 PC10/A10 14 PC11/A11 15 PC12/A12 16 PC13A13 17 PC14/A14 18 PC15/A15 19 NMI 76 PA15/CK 83 Vss 3 PA14/RD 34 PA13/WRH 36 RES 84 XTAL 72 EXTAL 74 PF0/AN0 91 PF1/

36、AN1 92 PF2/AN2 93 PF3/AN3 94 PF4/AN4 95 PF5/AN5 96 PF6/AN6 98 PF7/AN7 99 PB0/A16 20 PB1/A17 22 PB6/IRQ4/A18/BACK 29 PB7/IRQ5/A19/BREQ 30 PE0/TIOC0A/DREQ0 85 PA12/WRL 38 MD0 79 MD1 78 MD2 75 PD0/D0 70 PD1/D1 69 PD2/D2 68 PD3/D3 67 PD4/D4 66 PD5/D5 64 PD6/D6 63 PD7/D7 62 PD8/D8 60 PD9/D9 59 PD10/D10 5

37、8 PD11/D11 57 PD12/D12 56 PD13/D13 54 PD14/D14 53 PD15/D15 52 PA5/SCK1/DREQ1/IRQ1 46 PE1/TIOC0B/DRAK0 86 PE2/TIOC0C/DREQ1 87 PE3/TIOC0D/DRAK1 88 PE4/TIOC1A/RXD3 89 PE5/TIOC1B/TXD3 102 PE6/TIOC2A/SCK3 104 PE7/TIOC2B/RXD2 105 PE8/TIOC3A/SCK2 106 PA7/TCLKB/CS3 44 PA8/TCLKC/IRQ2 43 PA11/CS1 40 PA10/CS0

38、41 PA2/SCK0/DREQ0/IRQ0 49 PA1/TXD0 50 PA4/TXD1 47 PA0/RXD0 51 PA3/RXD1 48 Vss 23 ASEBRKAK 27 Vss 33 Vss 39 Vss 55 Vcc 21 Vcc 37 Vcc 65 AVcc 100 AVss 97 PB8/IRQ6/A20/WAIT 31 PB9/IRQ7/A21/ADTRG 32 PA6/TCLKA/CS2 45 PA9/TCLKD/IRQ3 42 MD3 73 PE9/TIOC3B/SCK3 107 PE10/TIOC3C/TXD2 108 PE11/TIOC3D/RXD3 110 P

39、E12/TIOC4A/TXD3 111 PE13/TIOC4B/MRES 112 PE14/TIOC4C/DACK0 1 PE15/TIOC4D/DACK1/IRQOUT 2 PB2/IRQ0/POE0/SCL0 24 PB3/IRQ1/POE1/SDA0 25 PB4/IRQ2/POE2/CS6 26 PB5/IRQ3/POE3/CS7 28 PLLCAP 81 PLLVcc 80 PLLVss 82 Vss 61 Vss 71 Vss 90 Vss 101 Vcc(FWP) 77 Vcc 103 Vss 109 WDTOVF 35 U1 HD6417144(ROMLESS) +3.3V +

40、3.3V +3.3V +5V +3.3V +3.3V +3.3V +3.3V +3.3V +3.3V +3.3V +3.3V +3.3V DRB1 DRB2 DRB0 PITCH MOD OD TONE A0 25 A1 24 A2 23 A3 22 A4 21 A5 20 A6 19 A7 18 A8 8 A9 7 A10 6 A11 5 A12 4 A13 3 A14 2 DQ0 29 DQ1 31 DQ2 33 DQ3 35 DQ4 38 DQ5 40 DQ6 42 DQ7 44 E 26 G 28 Vcc 37 A15 1 A16 48 A17 17 DQ8 30 DQ9 32 DQ1

41、0 34 DQ11 36 DQ12 39 DQ13 41 DQ14 43 DQ15A-1 45 W 11 Vss 27 NC 10 NC 13 NC 14 BYTE 47 RB 15 RP 12 Vss 46 A18 16 A19 9 U14 MX29LV160BBTC-70G 16M FLASH A18 D8 D9 D10 D11 D12 D13 D14 D15 +3.3V PED MIDI IN PED MIDI IN ANSEL0 ANSEL1 DRB0 DRB1 DRB2 PITCH MOD TONE OD R120100 ROT A ROT B DSP RESET 9 10 8 U3

42、C 74LV08APW CS7 PIN_CE POUT_CE RXD3 NC TXD3 +3.3V NOT USED GND R24 10k BAT DETCT JP1 JP2 +3.3V VCC 14 GND 7 U3E 74LV08APW C101 0.1u +3.3V 4 5 6 U3B 74LV08APW 1 2 3 U3A 74LV08APW R25 10k +3.3V R26 10k A0 12 A1 11 A2 10 A3 9 A4 8 A5 7 A6 6 A7 5 A8 27 A9 26 A10 23 A11 25 A12 4 A13 28 A14 29 D0 13 D1 14

43、 D2 15 D3 17 D4 18 D5 19 D6 20 D7 21 CE 22 OE 24 Vcc 32 GND 16 A15 3 A16 2 A17 30 A18/PRG 31 Vpp 1 U16 REA-32DP-32SP +3.3V R27 10k PE0 MC PE0 PE10 PE0 KEYSCAN RESET VASE_RESET R28 10k +3.3V 1 2 3 4 5 6 7 J101 B7B-PH-K-S AMUTE R241 10K RA14-100 NOT USED NOT USED NOT USED JP5 9 10 8 U4C 74LV32APW A20

44、A21A21 +3.3V A0 20 A1 19 A2 18 A3 17 A4 16 A5 15 A6 14 A7 13 A8 3 A9 2 A10 31 A11 1 A12 12 A13 4 A14 11 D0 21 D1 22 D2 23 D3 25 D4 26 D5 27 D6 28 D7 29 CE 30 WE 5 OE 32 VCC 8 GND 24 A15 7 A16 10 A17 6 A18 9 U44 IC62LV5128LL-55H A19 C11 0.1u RAM Vcc A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15

45、A16 A17 A18 A0 20 A1 19 A2 18 A3 17 A4 16 A5 15 A6 14 A7 13 A8 3 A9 2 A10 31 A11 1 A12 12 A13 4 A14 11 D0 21 D1 22 D2 23 D3 25 D4 26 D5 27 D6 28 D7 29 CE 30 WE 5 OE 32 VCC 8 GND 24 A15 7 A16 10 A17 6 A18 9 U15 IC62LV5128LL-55H A19 WRL WRL FOOTSW_T FOOTSW_R R123 10k R114 10k R117 10k R124 10k Debug O

46、n Flash JP1 JP2 JP5 O X X OX O Q11 2SC4116GR R125 47k R126 3300 R92 10k R93 10k +3.3V +3.3V RAM Vcc R94 10K R95 4700 R96 47k R97 10k NOT USED 7-1 XK-1 00228-25216 MGH-94A(2/9) XK-1 C102 0.1u A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 E 19 DIR 1 Vcc 20 GND

47、 10 U18 74LV245APW RD C103 0.1u D0 D1 D2 D3 D4 D5 D6 D7 RD KeyScan & I/O SIO D0 D1 D2 D3 D4 D5 D6 D7 D8 D10 D9 D11 D12 D13 D15 D14 12 34 56 78 910 1112 1314 1516 J103 XG4C-1631 C112 C113 C114 C115 C116 C117 C118 C119 R80 330 B0 B1 B2 B3 B4 B5 B6 B7 VSSVDD VORS ER/W DB0DB1 DB2DB3 DB4DB5 DB6DB7 1615 1

48、413 1211 109 87 65 43 21 LCD I/F LCD RS B0 B1 B2 B3 B4 B5 B6 B7 C104 0.1u D0 D1 D2 D3 D4 D5 D6 D7 LCD_CE LCD R/W LCD RS LCD R/W RD C120 C121 C122 C123 C124 12 U5A 74LV04APW A0 2 A1 3 A2 4 A3 5 A4 6 A5 7 A6 8 A7 9 B0 18 B1 17 B2 16 B3 15 B4 14 B5 13 B6 12 B7 11 E 19 DIR 1 Vcc 20 GND 10 U19 74LV245APW

49、 OE 1 Q0 19 D0 2 Q1 18 D1 3 Q2 17 D2 4 Q3 16 D3 5 Q4 15 D4 6 Q5 14 D5 7 Q6 13 D6 8 Q7 12 Vcc 20 GND 10 D7 9 CK 11 U24 74LV574APW OE 1 Q0 19 D0 2 Q1 18 D1 3 Q2 17 D2 4 Q3 16 D3 5 Q4 15 D4 6 Q5 14 D5 7 Q6 13 D6 8 Q7 12 Vcc 20 GND 10 D7 9 CK 11 U25 74LV574APW KEYSCAN_CE LCD_CE R29 10K VCC 14 GND 7 U5G 74LV04APW C15 0.1u C105 0.1u 100pF x 13 KEYSCAN_CE D0.15 D0.15 KD0 KD1 KD2 KD3 KD4 KD5 KD6 KD7 KD0. 7 KD0. 7 R30 10K R138 2.2 1/2W 4 5 6 U4B 74LV32APW WRH +3.3V +3.3V +3.3V +3.3V +3.3V +3.3V 98 U5D 74LV04APW 1110 U5E 74LV04APW 1312 U5F 74LV