Ensoniq_ASR_Service_Manual电路图.pdf

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1、ASR Service Manual I EN50Nialm P/N 9312001801 . B November 1995 RadioFans.CN 收音机爱 好者资料库 Table of Contents TABLE OF CONTENTS IMPORTANT THINGS TO KNOW Known Areas of Concern. 1 Avoid Damage from ESD (Electrostatic Discharge). 1 SIMMS. 1 What SIMMs to Use .1 What Changed? 3 .- How to Tell Which Rev Boa

2、rd You Have 3 .- THE DISK DRIVE. 3 Transporting a unit .3 What disks to use .3 Testing the Disk Drive. .3 UNIT SOUNDS DISTORTED.4 FUSES .5 The 20-pin KeyboardIKPC Simulator Ribbon Cable.5 Customer Thinks the Unit is Broken.5 MECHANICAL ISSUES. .6 ASRCase(Avoid Stripping Screws).6 High - retention Fo

3、rce Connectors (Repair Technicians Label).6 OEX-6sr Connector on ASR Keyboard and ASR-88 Caution! Important!.7 HOW THE ASR WORKS. .7 Keyboardand Rack Similarites.9 Communications Path.9 TROUBLESHOOTING CHECKING THE POWER SUPPLY.1 2 Analog Board Regulator Voltages.1 2 POWER SUPPLY VOLTAGE CHECK POINT

4、S.13 Fuse Ratings .1 3 TESTING THE POWER SUPPLY UNLOADED. 1 4 CHECKING THE DISPLAY.1 6 DISPLAY SELF-TEST MODE.1 6 Using Self-Test Mode to Diagnose the Keypad/Display Board.1 6 Troubleshooting an ASR-10 With No LEDS Lit.1 7 TroubleshootinganASR-10 With All LEDS Lit, No Display.1 8 KEYBOARD AND FOOTSW

5、ITCH INPUTS. 1 9 The ASR-10 Keyboard and theKPCSimulator Board.1 9 ASR-10 Footswitch and Patch Select Inputs.1 9 ASR-88 KEYBOARD.:. 20 KeyResponse Problems. .20 Pressure Response Problems. 22 ERROR MESSAGES .23 ASR-10188SOFTWARE NOTES.25 ASR TEST PROCEDURE. 35 1.Power Up and Load in Sounds. 35 2.Key

6、board Test(ASR-10188Keyboard Only). 35 - - c - i- ASR Service Manual RadioFans.CN 收音机爱 好者资料库 Table of Contents 3. HeadphoneCheck.35 4. MIDITest. .35 5.Anlog Page.36 6.Disk Check. .37 7.Sampling Check. 37 8.OEX-6sr Check.38 REPLACING ASR-lOh38 MODULES. 41 Section A - Replacing the Digital Board. 41 S

7、ection B-Replacing the Analog Board.42 SectionC -Replacing the Power Supply Board.43 Section D-Replacing the Keypad/Display Board.44 Section E-Replacing the Keyboard(ASR-10) .45 Section E-Replacing the Keyboard(ASR-88) .46 Section F-Replacing the Digital Jack Board.47 Section G -Replacing the Analog

8、Jack Board.47 Section H-Replacing the Disk Drive.48 SectionI -Replacing the Transformer.48 Section J-Replacing the Line Filter.49 SectionK -Installing and Removing the SCSI Board.50 Section L -Replacing the Digital I/O Option Board.5 1 SectionM-Replacing theO.S.EPROMs.53 Section N -Replacing the Whe

9、el Assembly.54 REPLACING ASR RACK MODULES.56 Section A-Replacing the Rack Digital Board.56 Section B - Replacing the Rack Analog Board.57 SectionC -Replacing the Rack Power Supply Board.58 Section D-Replacing the Rack Keypad/Display Board.59 Section E-Replacing the Rack KPC Simulator Board.60 Sectio

10、n F -Replacing the Rack Digital Jack Board.60 Section G -Replacing the Rack Analog Jack Board.60 Section H-Replacing the Rack Disk Drive.61 Section I-Replacing the Rack Transformer.62 Section J - Replacing the Rack Line Filter.62 SectionK-Replacing the RackSCSIBoard.63 Section L -Replacing the Rack

11、DigitalI./OOption Board.63 Section M - Replacing the Rack O.S. EPROMs.65 SectionN-Replacing the Rack OEX-6sr Board.65 Section 0- Replacing thePCBMounting Bracket.66 IMPORTANT INFORMATION ABOUTSJMMs.67 SCSI INFORMATION.74 DIGITAL I/O INFORMATION.76 OEX-6sr INFORMATION.77 Glossary. .Inside back cover

12、Part Numbers for ASR Modules.Inside back cover Contacting ENSONIQ.Outside back cover ASR Service Manual RadioFans.CN 收音机爱 好者资料库 Table of Contents LIST OF FIGURES Figure 1 - Note the single jumper above the Simm slots .2 Figure 2 - Note the two different jumpers above theSEvIM slots .2 Figure3 -Rear

13、view of Panasonic Disk Drive .3 Figure 4-Correct Sony 420-l jumper settings.4 Figure5 -Correct tool for removing cables.6 Figure6-ASR Block Diagram. .7 Figure7-CommunicationsPath .1 0 Figure8 -AC Line Voltage Check Points .1 2 Figure9-ASR-10 Power SupplyBoard.1 3 Figure 10 - Incorrect Analog Power S

14、upply Voltages (flow chart) .1 4 Figure 11 - Incorrect Digital Power Supply Voltages (flow chart) .1 5 Figure1 2 -NoLEDs Lit (flow chart) .1 7 Figure1 3 -All LEDs Lit,NoDisplay (flow chart). .1 8 Figure1 4 -ROM and disk Compatibility .25 Figure1 5 -ASR-10 Exploded View. .39 Figure1 6 -ASR-88 Explode

15、d View. . 40 Figure1 7 -ASR-10 Digital Board.42 Figure 18 - ASR-10 Analog Board .42 Figure1 9 -ASR-10 Center Support Bracket Assembly.44 Figure 20-ASR- 10Keyboard Mounting Bracket. .46 Figure21-ASR-88 Bracket locations. .46 Figure 22 - SCSI Board Mounting .50 Figure 23 - Installing a DI-10 Board int

16、o an ASR-10 Keyboard Unit .52 Figure24-ASR-1ORExploded View. .55 Figure 25 - Top Side of the ASR-10 Rack PCB Mounting Bracket .64 Figure 26 - Installing a DI-10 Board into an ASR-10 Rack Unit.64 Figure27-SIMM Layout. .67 Figure28-Board differences .68 Figure29-Simm Access on the new Rev Board .70 Fi

17、gure 30 - THESE ARE THE ONLY CONFIGURATIONS THAT WILL WORK PROPERLY!.7 1 Figure3 1 -SIMM Access on the Old Rev Board.71 Figure 32 - THESE ARE THE ONLY CONFIGURATIONS THAT WILL WORK PROPERLY!.72 Figure33-SIMM Socket Components .72 Figure34-Removing SIMMs .73 Figure34-InstallingSIMMs.73 Figure36-A pro

18、perly Installed SIMM .73 ASR Service Manual - Important IMPORTANT THINGS TO KNOW ABOUT THE ASR-1 O/88 About this manual: The instructions in this manual are for both the ASR-10/M? Keyboard and Rack unless otherwise noted. When you are troubleshooting an ASR Rack and the instructions say to check the keyboard, substitute a check of the KPC simulator board. When you are troubleshooting an a ASR-88 and the instructions say to check