Casio_GZ-50M_Service_Manual电路图.pdf

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1、GM SOUND MODULE GZ-50M (with price) POWER VOLUMEGM SOUND MODULE MIN MIDI MONITOR DEMOPHONES MAX GENERAL RadioFans.CN 收音机爱 好者资料库 2 CONTENTS Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 MIDI Messages receivable with GZ-50M . . . . . . . . . . . .

2、 . . . . . . . . . 3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Circuit Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 Major waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3、. . . . 14 PCB View and Check Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Schematic Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Exploded View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Parts List

4、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19 SPECIFICATIONS GENERAL Sound source:The General MIDI system 1 Number of tones:128 Number of drum sets:8 Number of layer voice: 32 Digital effects:10, including Reverb-1, Reverb-2, Reverb-3, Chorus, Tremolo, P

5、hase Shifter, Organ SP, Enhancer, Flanger, EQ Loudness Demonstration tune:Suite for Rebecca (Arranged and programmed by Wojtek Gogoleski) Volume control:Analog volume MIDI monitor:LED Tuning:Center: 440 Hz Terminals:Headphone Jack Output impedance: 68 , Output voltage: 0.3 V(rms)MAX, Line Out Jack O

6、utput impedance: 2 K, Output voltage: 1.5 V8rms) MAX, MIDI IN Jack, AC Adapter Jack (9 V) Power source:AC source only: AC adapter Power consumption:2.8 W Dimensions (HWD):35 x 113 x 169 mm (1-3/8 x 4-7/16 x 6-5/8 inches) Weight:450 g (1 lbs) ELECTRICAL Current drain with 9 V DC: No sound output210 m

7、A 20% Maximum volume230 mA 20% with 32 polyphonic in tone No.078 Volume; maximum, Touch response: maximum Phone output Level (Vrms with 8 load each channel): with keys C6 and F6 in tone No.07885 mV 20% Line output level (Vrms with 47 K load each channel): with keys C6 and F6 in tone No.078300 mV 20%

8、 Minimum operating voltage:4.0 V RadioFans.CN 收音机爱 好者资料库 3 MIDI messages receivable with GZ-50M MIDI channel:1 - 16 channel Note On/Off:Note number0 - 127 Velocity1 - 127 Program change:0 - 127 on channel 1 -9 & 11 - 16 0 - 7 on channel 10 Pitch bend:00H/00H - 7FH/7FH Control change:ModulationContro

9、l No. 10 - 127 VolumeControl No. 70 - 127 PanControl No. 100 (left) - 64 (center) - 127 (right) ExpressionControl No. 110 - 127 HoldControl No. 640 - 63: Off, 64 - 127: On SostenutoControl No. 660 - 63: Off, 64 - 127: On SoftControl No. 670 - 63: Off, 64 - 127: On Effect depthControl No. 910 -127 Al

10、l sounds offControl No. 120 Reset all controllersControl No. 121 * See next page for information about the initial settings. Local control On/OffControl No. 1220: Off, 127: On All notes offControl No. 123 Registered Parameter Number (RPN) Control No. 36: LSB, No.37: MSB Pitch bend senseControl No. 1

11、0000H Control No. 10100H Data entryControl No. 600H - 0CH Control No. 3600H Fine tuningControl No. 10001H Control No. 10100H(20H: -50 cents) Data entryControl No. 620H - 40H - 60H(40H: center) Control No. 3600H(60H: +50 cents) Coarse tuningControl No. 10002H Control No. 10100H(34H: -12 seminotes) Da

12、ta entryControl No. 634H - 40H - 4CH(40H: center) Control No. 3600H(4CH: +12 seminotes) RPN nullControl No. 1007FH Control No. 1017FH Active sensing: Channel pressure: Reconized as modulation System exclusive: Effect changeF0440B09xxF7 xx: 00 - 09, 0F 00:Reverb1 (Stage) 01:Reverb2 (Hall) 02:Reverb3

13、(Room) 03:Chorus 04:Tremolo 05:Phase shifter 06:Organ speaker 07:Enhance 08:Flanger 09:EQ Loundness 0F:Effect OFF GM system onF07E7F0901F7 * See next page for information about the initial settings in The General MIDI system. RadioFans.CN 收音机爱 好者资料库 4 The initial setteings Pitch bend:0 Modulation:0

14、(Off) Expression:127 (Maximum) Sustain:0 (Off) Sostenuto:0 (Off) Soft:0 (Off) Channel pressure:0 (Off) RPN:Null The initial settings in The General MIDI system Channel 1 - 9 & 11 - 16 Program change:000 (Piano) Pitch bend:LSB: 40H, MSB: 00H Modulation:0 (Off) Volume:100 Pan:64 (Center) Expression:12

15、7 (Maximum) Sustain:0 (Off) Soft:0 (Off) Effect depth:127 (Maximum) Pitch bend sense:02 (2 seminotes) Coarse tune:LSB:40H, MSB:00H Fine tune:LSB:40H, MSB:00H RPN:Null Channel pressure:0 (Off) Channel 10 Drum set No.:0 Volume:100 Pan:64 (Center) Expression:127 (Maximum) Effect depth:127 (Maximum) Sof

16、t:0 (Off) 5 ModelGZ-50MMIDI Implementation Chart Function .TransmittedRecognizedRemarks X X X X EEEEEEEEEEEEEE X EEEEEEEEEEEEEE X X X X X X X X X X X X X X X X X X EEEEEEEEEEEEEE X X X X X X X X X X Mode 1 : OMNI ON, POLYMode 2 : OMNI ON, MONOO : Yes Mode 3 : OMNI OFF, POLYMode 4 : OMNI OFF, MONOX :

17、 No BasicDefault ChannelChanged Default ModeMessages Altered Note Number:True voice VelocityNote ON Note OFF AfterKeys TouchChs Pitch Bender 01 06, 38 Control07 Change10 11 64 66 67 91 100, 101 120 121 Program Change :True # System Exclusive System: Song Pos Common: Song Sel : Tune System: Clock Rea

18、l Time: Commands Aux: Local ON/OFF Messages: All notes OFF : Active Sense : Reset Remarks *2: Vibrato effect is obtained when received either message of modulation or channel after touch. *3: Reception of pitch bend sense, fine tune, coarse tune, and RPN Null. *4:GM system onF07E7F0901F7 Effect Chan

19、geF0440B09xxF7 xx: E_000 - E_909, Off0F 1-16 channel 1-16 channel Mode 3 X EEEEEEEEEEEEEE 0 127 12 108*1 O9nH v = 1127 X9nH v = 0, 8nH V=EE X O*2 O O*2 O*3 O O O O O O O O*3 O O O0 127 EEEEEEEEEEEEEE O*4 X X X X X X O O X *1:Different per tones. EE = No relation Modulation Data entry Volume Pan Expr

20、ession Hold 1 Sostenuto Soft External effect depth RPN LSB MSB All sounds off Reset all controllers Version: 1.0 7 *1Tone without scale. TONE NO./TONE NAMETONE NO./TONE NAME REEDSYNTH-SFX 064 SOPRANO SAX096 PEARL DROPC2 C7 065 ALTO SAX097 SOUNDTRACKC2 C7 066 TENOR SAX098 CRYSTALC2 C7 067 BARITONE SA

21、X099 ATMOSPHEREC2 C7 068 OBOE100 BRIGHTNESSC2 C7 069 ENGLISH HORN101 LABYRINTHC2 C7 070 BASSOON102 ECHOESC2 C7 071 CLARINET103 COSMIC SOUNDC2 C7 PIPEETHNIC 072 PICCOLO104 SITARC3 F5 073 FLUTE105 BANJOC3 C6 074 RECORDER106 SHAMISEND3 G5 075 PAN FLUTE107 KOTOG3 C6 076 BOTTLE BLOW108 THUMB PIANOC3 G5 0

22、77 SHAKUHACHI109 BAG PIPEC2 F5 078 WHISTLE110 FIDDLEG3 C7 079 OCARINA111SHANAIC3 C5 SYNTH-LEADPERCUSSION 080 SYNTH - LEAD 1112 BELLSC5 C6 081 SYNTH - LEAD 2113 AGOGOC4 C5 082 CALLIOPE114 STEEL DRUME3 E5 083 POWER LEAD115 WOOD BLOCKC4 C5 084 METAL LEAD116 TAIKOC4 C5 085 ANGEL CHOIR117 TOMC4 C5 086 FI

23、FTH LEAD118 ELEC TOMC4 C5 087 BASS+LEAD119 REVERSE CYMBALC4 C5 SYNTH-PADSFX 088 FANTASY120 GT FRET NOISEC4 C5 089 WARM STRINGS121 BREATH NOISEC4 C5 090 SYNTH-ENS122 SEASHOREC4 C5 091 SPACE CHORUS123 BIRDC4 C5 092 GLASS HARMONICA124 TELEPHONEC4 C5 093 ILLUSION125 HELICOPTERC4 C5 094 COUNTRY FARM126 A

24、PPLAUSEC4 C5 095 SYNTH-PAD127 GUNSHOTC4 C5 GM OCTAVE RANGE *1 F#3 D#6 C#3 G#5 F#2 D#5 C#2 G#4 A#3 G6 E3 A5 A#1 C5 D3 G6 D5 C8 C4 C7 C4 C7 C4 C7 C4 C7 G3 C6 C4 C7 C4 C6 A0 C8 A0 C8 C2 C7 C2 C7 C2 C7 C2 C7 C2 C7 A0 C8 C2 C7 C2 C7 C2 C7 C2 C7 C2 C7 C2 C7 C2 C7 C2 C7 GM OCTAVE RANGE *1 *1 *1 *1 *1 *1 *1

25、 *1 *1 *1 *1 *1 8 LIST OF DRUM SOUNDS NOTE NO.DRUM INSTRUMENT NAME 35Acoustic Bass Drum 36Bass Drum 1 C#237Side Stick 38Acoustic Snare D#239Hand Clap 40Electric Snare 41Low Floor Tom F#242Closed Hi Hat 43Tj?/F9 1 Tf?8 0 0 8.001 340.507 5760.801 Tm?(High Floor )19(T)111(o)0(m)TJ?/F10 1 Tf?8.8 0 0 8.8

26、01 214.907 548.0o44Tj?/F9 1 Tf?8 0 0 8.001 340.507 5748.799 Tm?(Pedal Hi Hat)Tj?/F10 1 Tf?8.8 0 0 8.801 293.307 535.213 Tm?(45)Tj?/F9 1 Tf?8 0 0 8.001 340.507 535.997 Tm?-0.018 Tw?(Low T)111(o)0(m)TJ?/F10 1 Tf?8.8 0 0 8.801 214.907 522.41106214.907A#24646 D#2 9 BLOCK DIAGRAM Working Storage RAM (64K

27、-bit) LSI106 SRM2264LM90-B EA0 EA14 ED0 ED7 RA0 RA19 RD0 RD15 WCK1 SLOP BCK D/A Converter LSI101 UPD6376GS Filter IC103 Main Volume Headphone Amplifier IC101 LA4525 CPU LSI104 HD6433298A42F A0 A14 Power Supply Circuit D102, D103 Q101Q105 VCC AVDDVDD DVDD Effect RAM (256K-bit) LSI102 LC33832M-70 D0D7

28、 Headphone A0 A14 A0 A3 MIDI IN Filter IC103 Power Switch POWER Reset IC IC104 RH5VL36A RESET Photocoupler IC106 PC900VP Line Out Amplifier IC102 M5218AFP Mute Circuit Q108, Q109 Line Out DC IN Sound Source ROM (16M-bit) LSI105 TC5316200CF-C117 DSP LSI103 HG51B115FD Power ON signal 10 CPU (LSI104: H

29、D6433298A42F) The 16-bit CPU contains a 32k-bit ROM, a 1k-bit RAM, seven 8-bit I/O ports and MIDI interfaces. The CPU receives MIDI message and interprets it using the working storage RAM. For instance, when receiv- ing NOTE ON message, the CPU sends the note number and its velocity to the DSP in or

30、der to produce sound of that note. The following table shows the pin functions of LSI104. CIRCUIT DESCRIPTION DIGITAL SIGNAL PROCESSOR (LSI03: HG51B155FD-1) Upon receipt of a note number and its velocity, the DSP reads sound and velocity data from the sound source ROM in accordance with the received

31、 MIDI message. Then it provides 16-bit serial signal to the DAC. If a control change message or an effect change of exclusive message has been received, the DSP adds the effect to the sound data using the effect RAM. The following table shows the pin functions of LSI103. Pin No.TerminalIn/OutFunctio

32、n 1P50/TXD Not used 2P51/RXDIn MIDI signal input 3P52/SCKOut Reset signal output 4-RESETIn Reset signal input 5-NMIIn Power ON trigger signal input 6VCCIn +5V source 7-STBYIn Standby signal input. Connected to +5V. 8VSSIn Ground (0V) source 9, 10XTAL, EXTALIn 20MHz clock input 11, 12MD1, MD0In Mode

33、selection input 13AVSSIn Ground (0V) source 14 20P70 P76In Not used. Connected to ground. 21P77In DEMO button input signal 22AVCCIn +5V source 23P60Out LED drive signal output 24 30P61 P67 Not used 31VCCIn +5V source 32P27 Not used 33 48A0 A14Out Address bus 40VSSIn Ground (0V) source 49 56D0 D7In/O

34、ut Data bus 57, 58P40, P41 Not used. 59P42Out Power ON signal output 60P43Out Read enable signal output 61P44In Write enable signal output 62P45 Not used 63P46Out Terminal for 10 MHz clock check point 64P47 Not used. Connected to +5 V source. 11 Pin No.TerminalIn/OutFunction 1 8CD0 CD7In/Out Data bu

35、s 9, 10CE1, TRSB Not used 11GND7In Ground (0V) source 12CK16Out Terminal for 24.576 MHz clock 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 Sy

36、stem control terminal. Single chip system: Open 21CCSBIn Chip select signal input 22 25CA0 CA3In 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

37、40 49 52 57 RD0 RD15In Data bus for the sound source ROM 50VCC2In +5V source 51GND2In Ground (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 83WO

38、K2Out Not used 84VCC3In +5V source 85GND3In Ground (0V) source 86WOK1Out Word clock for the DAC 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

39、 enable signal for the effect RAM 12 Pin No.TerminalIn/OutFunction 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

40、 123 130ED0 ED7In/Out Data bus for the effect RAM 131GND5In Ground (0V) source 132 134 Not used. Connected to ground. 135, 136 Not used Block diagram of DSP and DAC circuit DAC (LSI101: UPD6376GS) The DAC receives 16-bit serial data and two clocks output from the DSP. The DAC converts the data into

41、analog waveforms by each channel and output them separately. The following table shows the pin functions of LSI101. DSP LSI103 HG51B155FD-1 Effect RAM (256K-bit) LSI102 LC33832M-70 Sound Source ROM LSI105 TC5316200CF-C117 CEA0 A19D0 D15 RA0 RA19 RD0 RD15 RA22 D0 D7 A0 A3 A13 SOLP BOK WOK1 EA0 EA14 E

42、D0 ED15 CS WEOE D0 D15A0 A14 ECEB EOEB EWEB PG X102 24.576 MHz DAC LSI101 UPD6376GS LOUT ROUT SOLP: Sound data BOK: Bit clock WOK1: Word clock SI CLK LRCK RD WR RESET Power ON signal CCSB CRDB CWRB RESB 13 VDD RESET CPU LSI104 HD6433298A42F Reset IC IC104 RH5VL36A Working Storage RAM LSI106 LC3564SM

43、-85 DSP LSI103 HG51B155FD-1 VDDDVDDVDD -RESET POWER From power switch -NMI To power supply circuit Power ON signal P42 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 +5V source for

44、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.OUTOut Left chan

45、nel 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 NameVoltageFor operation of VDD+5 VCPU, Reset IC, Working strage RAM DVDD+5 VDSP, Effect RAM, DAC, Pilot lamp

46、 AVDD+5VDAC, Filter AVCC+7 VHeadphone amplifier, Line ount amplifier VCC+8 VMute circuit POWER SUPPLY CIRCUIT The power supply circuit generates five voltages as shown in the following table. VDD voltage is always generated. The others are controlled by the power ON signal output from the CPU. RESET

47、 CIRCUIT When an AC adapter is connected, the reset IC provides a low pulse to the CPU. The CPU then initializes its internal circuit and clears the working storage RAM. When the power switch is pressed, the CPU receives a low pulse of POWER signal. The CPU provides the power ON signal to the power

48、supply circuit and raises RESET signal to +5V to reset the DSP. 14 1 2 3 CH1 CH2 4 CH1 5 6 7 8 9 CH1 CH2 1 2 Voltage VDD Emitter of Q105 Initial reset signal RH5VL36A pin 1 3 4 5 Power ON trigger -NMI HD6433298A42F pin 5 Power ON signal HD6433298A42F pin 59 Reset signal HD6433298A42F pin 3 6 7 8 Wor

49、d clock WOK1 UPD6376GS pin 13 Data SI (Note OFF) UPD6376GS pin 15 Bit clock BOK UPD6376GS pin 16 9MIDI data PC900VP pin 4 Basic channel Note No. Velocity : 1 : 60 (C3) : 127 (Maximum) 0.1 s CH1:CH2: 5 V5 V 5 s 5 VCH1:5 VCH2:5 VCH3:5 VCH1: 2 ms 0.1 s CH1:CH2: 5 V5 V CH1 CH2 CH3 MAJOR WAVEFORMS 15 0 A B CH1 CH2 C