Casio_GZ-500_Service_Manual电路图.pdf

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1、GM SOUND KEYBOARD GZ-500 (with price) GZ-500 RadioFans.CN 收音机爱好者资料库 2 ELECTRICAL Current drain with 9 V DC: No sound output294 mA 20% Maximum volume940 mA 20% with 32 polyphonic notes in tone No. 078 Volume; maximum, Velocity: maximum Phone output level (Vrms with 8 load each channel): with key A5

2、pressed in tone No. 078100 mV 20% Line output level (Vrms with 47 k load each channel): with key A5 pressed in tone No. 0781350 mV 20% Minimum operating voltage:6.0 V CONTENTS Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Operation . . . . . . .

3、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Major waveforms . . . . . . . .

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Schematic Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22 Parts List . . . . . . . . . . . . . . . . .

5、. . . . . . . . . . . . . . . . . . . . . . . . . . . 23 SPECIFICATIONS GENERAL Number of keys:61 Polyphonic:32-note Preset tones:128, Drum set: 8 Keyboard controls:Touch response: On/Off Digital effects:10, including Reverb-1, Reverb-2, Reverb-3, Chorus, Tremolo, Phase Shifter, Organ SP, Enhancer,

6、Flanger, EQ Loudness Modulation:On/Off, Depth setting range: 0 - 127 Pitch bend wheel:Bend sense: 0 - 12 Tuning control:440Hz 50 cents Built-in speakers:12 cm dia. 2 W input rating: 2 pcs. Terminals:Phone Jack Output impedance: 100 , Output voltage: 4.5 V(rms) MAX, MIDI Jacks (IN, OUT), Assignable J

7、ack, AC Adapter Jack (9 V) Auto power off:Approximately 6 minutes after the last operation Power source:2-way AC or DC source AC: AC adapter DC: 6 D size dry batteries Power consumption:7.7 W Dimensions (HWD):129 x 942 x 367 mm (5-1/16 x 37-1/16 x 14-1/2 inches) Weight:5.3 kg (11.7 lbs) excluding ba

8、tteries RadioFans.CN 收音机爱好者资料库 3 OPERATION SETTING UP THE KEYBOARD The initial settings Tone:000 (Piano)Channel 1 - 9 the DSP can read rhythm data simultaneously when a rythm pattern is selected. Then it provides 16-bit serial signal containing data of the melody, chord, bass, and percussion to the

9、 DAC. When an effect selected, the DSP adds the effect to the sound data using a 256k-bit RAM. The following table shows the pin functions of LSI102. 12 Pin No.TerminalIn/OutFunction 1 8CD0 CD7In/Out Data bus 9, 10CE1, TRSB Not used 11GND7In Ground (0V) source 12CK16Out Terminal for 24.576 MHz clock

10、 check point 13VCC1In +5V source 14CK0In Clock input. Connected to terminal CK16. 15TCKB Not used 16VCC1In +5V source 17GND1In Ground (0V) source 18, 19XT0, XT1In/Out 24.576 MHz clock input/output 20SGLIn System control terminal. Single chip system: Open 21CCSBIn Chip select signal input 22 25CA0 CA

11、3In Address bus 26CE0In Not used. Connected to ground. 27CWRBIn Write enable signal 28CRDBIn Read enable signal 29 32 Not used 33RESBIn Reset signal input 34TESBIn Not used. Connected to +5V. 35 39 Not used 40 49 52 57 RD0 RD15In Data bus for the sound source ROM 50VCC2In +5V source 51GND2In Ground

12、(0V) source 58RA23Out Not used 59RA22Out Chip select signal for the sound source ROM 60, 61RA20, RA21Out Not used 62 73 75 82 RA0 RA19Out Address bus for the sound source ROM 74GND5In Ground (0V) source 83WOK2Out Not used 84VCC3In +5V source 85GND3In Ground (0V) source 86WOK1Out Word clock for the D

13、AC 87SOLMOut Not used 88SOLPOut Serial sound data output 89BOKOut Bit clock output 90 92 Not used 93VCC5In +5V source 94, 95 97 105 107,109 110, 112 EA0 EA12Out Address bus for the effect RAM 96EWEBOut Write enable signal for the effect RAM 13 Block diagram of DSP and DAC circuit Pin No.TerminalIn/O

14、utFunction 106EOEBOut Read enable signal output for the effect RAM 108VCC7In +5V source 111ECEBOut Chip select signal output for the effect RAM 113 117ED11 ED15 Not used 118VCC4In +5V source 119GND4In Ground (0V) source 120 122ED8 ED10 Not sued 123 130ED0 ED7In/Out Data bus for the effect RAM 131GND

15、5In Ground (0V) source 132 134 Not used. Connected to ground. 135, 136 Not used Not used DSP LSI102 HG51B155FD Effect RAM (256K-bit) LSI103 LC33832M-70 Sound Source ROM LSI101 TC5316200CF-C112 CEA0 A19D0 D15 RA0 RA19 RD0 RD15 RA22 D0 D7 A0 A3 SOLP BOK WOK1 EA0 EA14 ED0 ED15 CS WEOE D0 D15A0 A14 ECEB

16、 EOEB EWEB PG X101 24.576 MHz DAC LSI104 UPD6376GS LOUT ROUT SOLP: Sound data BOK: Bit clock WOK1: Word clock SI CLK LRCK RD WR RESET APO CCSB CRDB CWRB RESB A12 A14 14 CRDB CWRB CKI CCSB CD0 CD7 CA0 CA2 First contact Second contact KC0 KC7 FI0 FI7 SI0 SI7 Key input signal Key scan signal Data bus A

17、ddress bus Key Controller LSI107 HG52E35P Keyboard FI SI KC RD WR APO A13 A14 CLOCK RESET RESB DAC (LSI104: UPD6376GS) The DAC receives 16-bit serial data output from the DSP. The data contains digital sound data of the melody, chord, bass, and percussion for the right and left channels. The DAC con

18、verts the data into analog waveforms by each channel and output them separately. The following table shows the pin functions of LSI1. Pin No.TerminalIn/OutFunction 1SELIn Mode selection terminal. Connected to ground. 2D.GNDIn Ground (0V) source for the internal digital circuit 3NC Not used. 4DVDDIn

19、+5V source for the internal digital circuit 5A.GNDIn Ground (0V) source for the right channel 6R.OUTOut Right channel sound waveform output 7, 8A.VDDIn +5V source for the internal analog circuit 9R.REFIn Right channel reference voltage terminal 10L.REFIn Left channel reference voltage terminal 11L.O

20、UTOut Left channel sound waveform output 12A.GNDIn Ground (0V) source for the left channel 13LRCKIn Word clock input 14LRSELIn Not used. Connected to ground. 15SIIn Sound data input 16CLKIn Bit clock input KEY CONTROLLER (LSI107: HG52E35P) The key controller generates key scan signals and provides t

21、hem to the keyboard. By counting the time between first-key input signal FI and second-key SI from the keyboard, the key controller detects key velocity. The note number and its velocity data are read at regular intervals by the CPU. 15 AVDD 1K1K1K C222(H) C103(H) AGAG 1K AG To main volume - + IC105

22、 M5218APR 10V22 C333(H) Q107/108 2SC1740 18K 50V1 From the DAC 1K AG AVDD The following table shows the pin functions of LSI107. Pin No.TerminalIn/OutFunction 1REQBOut Not used 2, 3, 60 63 FI8 FI10, SI8 SI10 In Not used. Connected to + 5V. 4VCCIn +5V source 5CRDBIn Read enable signal input 6CWRBIn W

23、rite enable signal input 7CCBBIn Chip select signal input 8, 9, 11T, STBY, WIn Not used. Connected to +5V. 10RESBIn Reset signal input 12CKIIn 10 MHz clock input 13, 14TMD, TSTIn Not used. Connected to ground. 15CKOOut Not used. 16GNDIn Ground (0V) source 17XINIn Not used. Connected to ground. 18XOU

24、TOut Not used. 19TRESIn Not used. Connected to ground. 20 23, 25 28CD0 CD7In/Out Data bus 24GNDIn Ground (0V) source 29 31CR0 CR2In Address bus 32VCCIn +5V source 33 39, 41 43 53 55, 57 59 FI0 FI7, SI0 SI7 In Key input signal input 40VCCIn +5V source 44 47, 49 52KC0 KC7Out Key scan signal 48, 56GNDI

25、n Ground (0V) source 64VCCIn +5V source FILTER BLOCK Since the sound signals from the DAC are stepped waveforms, the filter block is added to smooth the waveforms. 16 IC102 TC74HC174AF LG CPU LSI106 HD6433298A42F LVDD P40 P41 KP0 KP5 (KO0 KO5) IC371 BA612 LED Driver Q104 Q111 LED Driver LS0 LS7 La L

26、g, Lp KO Signal Generator POWER AMPLIFIER (IC402: LA4598) The power amplifier is a two-channel amplifier with standby switch. The following table shows the pin function of IC402. Pin No.TerminalIn/OutFunction 1Power GNDIn Ground (0V) source 2Ch1 B.S. Terminal for a bootstrap capacitor 3Ch1 OUTOut Ch

27、annel 1 output 4VCCIn +9V source 5Ch1 N.F.In Negative feedback input 6Ch1 INIn Channel 1 input 7D.C. Terminal for a decoupling capacitor 8Pre GNDIn Ground (0V) source 9Stand byIn Power control signal input. 0 V: Off, +9 V: On 10Ch2 INIn Channel 2 input 11Ch2 N.F.In Negative feedback input 12Ch2 OUTO

28、ut Channel 2 output 13Ch2 B.S. Terminal for a bootstrap capacitor 14NC Not used LED DRIVING 17 MAJOR WAVEFORMS 1 2 CH1 CH2 A . 1 s CH1:CH2: 5 V5 V 3 4 CH1 5 5 V CH2 A . 1 s 5 VCH1:CH2: 6 7 CH1 CH2 CH3 8 A 20 s 5 VCH1:5 VCH2:5 VCH3: 9 0 CH1 CH2 CH3 A A 10 ms 5 VCH1:5 VCH2:5 VCH3: B C CH1 CH2 CH3 D 5

29、VCH1:5 VCH2:5 VCH3: A 1 s E F CH1 CH2 CH1: 20 mV CH2: 20 mV A 1 ms G CH1 Note OFF Note ON CH1:5 V A . 1 ms Voltage VDD CG connector pin 6 Initial reset signal RH5VL36A pin 1 1 2 Key scan signal KC0 HG52E35P pin 44 Key scan signal KC1 HG52E35P pin 45 Key scan signal KC2 HG52E35P pin 46 6 7 8 Power ON

30、 signal PSW HD6433298A42F pin 5 APO signal HD6433298A42F pin 59 Reset signal HD6433298A42F pin 3 3 4 5 Button scan signal KO0 CE connector pin 1 Button scan signal KO1 CE connector pin 2 Button scan signal KO2 CE connector pin 4 9 0 A Word clock WOK1 UPD6376GS pin 13 Data S1 (Note OFF) UPD6376GS pin

31、 15 Bit clock BOK UPD6376GS pin 16 B C D MIDI signal output CG connector pin 16 G Filter output AOR CG connector pin 3 Filter output AOL CG connector pin 4 E F Tone : Key : Touch response : Whistle (No. 078) A4 OFF 18 SCHEMATIC DIAGRAMS AMP./VOLUME PCBs JCM715-MA2M/MA3M 19 MAIN PCB JCM715-MA1M 678 1

32、7 16 15 14 12 13 1 2 5 3 4 9 10 11 20 CONSOLE PCBs JCM715-CN1M/2M/3M 21 KEYBOARD PCBs M616T-KY1M/KY2M 22 EXPLODED VIEW 12 14 13 9 10 11 6 3 7 11 1 15 17 16 19 18 20 2 20-1 20-2 24 4 23 22 8 5 21 Notes:1.Prices and specifications are subject to change with- out prior notice. 2.As for spare parts orde

33、r and supply, refer to the GUIDEBOOK for Spare parts Supply, published seperately. 3.The numbers in item column correspond to the same numbers in drawing. PARTS LIST GZ-500 FOB Japan NItemCode No.Parts NameSpecificationQ N.R.YenR Unit Price Main PCB N16923 6180PCB assy M715-MA1MM140244*117,810A NLSI

34、1012012 1498LSITC5316200CF-C1171980A NLSI1022012 1316LSIHG51B155FD-111,160A NLSI1032012 0777LSILC33832M-70-TLM1410A NLSI1042114 4221LSIUPD6376GS-E11200A NLSI1052012 0770LSISRM2264LM90-B1280A NLSI1062012 0462LSIHD6433298A42F1860A LSI1072011 5194LSIHG52E35P1600A NIC1012114 4214ICM5218AFP-600C139B NIC1

35、022105 4452ICHD74HC174FPTR151B NIC1032105 3122ICHD74HC00FP-TR135B NIC1042105 4445ICHD74HC08FPTR134B NIC1052105 4536ICRH5VL36AA-T1144B NQ101, Q1022252 1169Chip transistor2SC4081-T106S28B N Q103 Q1112250 1169Chip transistor2SA1576AT106S98B ND1012390 1729Chip diodeRB411DT146124C ND1022390 1820Chip diod

36、e1SS355TE-1719C NX1012590 2107Crystal oscillatorHC-49S24A1130B NX1022590 2100Ceramic oscillatorCSACS20.00MX040-TC170B Amp./Volume PCBs N26923 6190PCB assy M715-MA2,3MM140245*112,350B IC4012105 2114IC, RegulatorS-81350HG165A IC4022114 2891ICLA45981140A IC4032114 1421IC, PhotocouplerPC900V1210B Q401,

37、Q4042220 1387Transistor2SC1740SQ-TP-T213A Q4022253 0581Transistor2SD1858R.S-TV6-T124A Q4032251 0665Transistor2SB1240R.S-TV6-T126A Q4052251 0651Transistor2SB1274-CCC147A Q4062200 4409Transistor2SA933-SQ-TP-T114B D4012360 0098Zener diodeRD5.1ESB2-T1-T114A D4022360 2261Zener diodeRD5.1JSB3-T1-T19A D403

38、,2390 1344Diode1SS133T-77-T43C D407D409 D4042310 7996Zener diodeRD4.7ESB2-T1-T112B ND4052390 2408Diode1FWJ43N(TPA3)127C D4062390 0371DiodeDSK10B-BT-T111C J1013501 7049Power jackHEC2305-01-330129A J1023612 0665Phone jackYKB21-5006160B J1033612 0789JackYKB21-5010160B J1043501 4816DIN jackYKF51-5051111

39、0B VR1012765 1575Slide volumeEWA-MJ0S10B231110B Console PCBs N36923 6200PCB assy M715-CN123MM240232*111,170B IC3712114 3318ICBA612198B D372D3912390 1344Diode1SS133T-77-T213C NLED371/3722370 1197LEDMVR3378S-B102218C LED3732370 0959LEDLN882RPX-(TT)127C LED3742370 1141LEDSL-9352-601200B LED3752370 0987

40、LEDLN28RPX-(TT14)117C Keyboard PCBs N46923 6240PCB assy M616T-KY1MM111750*31870B 2301 0101Diode1S2473-T-77-T648C N56923 6250PCB assy M616T-KY2MM111751*31830B Notes: N New parts M Minimum order/supply quantity R Rank 23 FOB Japan NItemCode No.Parts NameSpecificationQ N.R.YenR Unit Price 2301 0101Diod

41、e1S2473-T-77-T588C Bender VR1022765 1141Rotary volumeRK1631110-50KB1190B N66923 6450Bender knobM340169-2160C Mechanical Parts N76906 7781Rubber button, Light grayM312088A-3197B N86923 6420Rubber button, WhiteM312125-3267B N96923 6410Rubber button, GrayM312123-3128B N106923 6400Rubber button, PinkM31

42、2122-3128B N113831 0357Speaker1221AF21,000B N126923 6390Top panelM140150-111,340C N136923 6430Slide knobM311860-2113B N146923 6381Display plateM340172A-11170C 156922 2840White key set, CEGBM111723-15100A 166922 2850White key set, DFAM111724-14100A 176922 2860White key set, DFASM111725-11100A 186922

43、2740Black key set,10-keyM111726-12120A 196922 2750Black key set, 5-keyM111726-2186A N206906 7805CaseM111732E*311,340C 20-16902 6140Battery springM41226-1127C 20-26903 2150Battery springM41330-1118C 216922 2761Key contact rubber LT-CBM211704A-1489B 226922 2771Key contact rubber LT-CSM211705A-1191B 236922 2631Bottom plateM211706A-11360C N246906 7876Battery coverM311164F*91180B Accessory 6920 8691Music standM311760A-11130B Notes: N New parts M Minimum order/supply quantity R Rank 24 MA0800751A