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Manuals
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ENSONIQ Manuals
Synthesizer
MR 61
Service manual
ENSONIQ MR 61 Service Manual
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Contents
Table of Contents
Troubleshooting
Bookmarks
Table of Contents
Table of Contents
Important Things to Know about the Mr-61 and
Safety First!.3
An Important Note about Electro Static Discharge.4
Other Areas of Concern.4
New Lid Design.4
Socketed Vs. Unsocketed Chips.4
Pan Potentiometer Knob.4
The Disk Drive.5
Transporting a Unit.5
What Disks to Use.5
Testing the Disk Drive.5
Saving Files to Floppy Disk.6
Updating the Mr-61 and Mr-76 Operating System (O.s.) Version.7
Aligning the Eprom Chip to the Socket.8
To Reinitialize
To Check the O.s. Version
High Retention Force Connectors.11
How the Mr-61 and Mr-76 Works.12
Software Information_13
Error Messages
To Reinitialize
System Error Codes.14
Software Release Notes
Troubleshooting_16
The Power Supply_17
How the Mr-61 and Mr-76 Gets Power.17
Fuse.17
Figure 9 - Power Switch Connections
Power Supply Voltage Check Points.18
The Mr-76 Keyboard
Key Response Problems.19
Pressure Response Problems.22
The Jack/Analog Board_23
Audio Problems.23
Bad Audio Problems.24
And Mr-76 Test Procedure_25
System Tests.25
Button Test.26
Audio Tests.27
Figure 14 - MR-61 Exploded View
Figure 15 - MR-76 Exploded View
Replacing Mr-61 and Mr-76 Modules_30
SECTION a - Replacing the Keyboard
SECTION B - Replacing the Mainboard
SECTION C - Replacing the Power Supply Board (MR-61)
SECTION D - Replacing the Jack/Analog Board (MR-61)
SECTION E - Replacing the Keypad/Display Boards (MR-61)
SECTION F - Replacing the Wheels/Pressure Board (MR-61)
SECTION G - Replacing the Disk Drive (MR-61)
SECTION H - Replacing the Mainboard (MR-76)
SECTION I - Replacing the Jack/Analog Board (MR-76)
SECTION J - Replacing the Wheels/Pressure Board (MR-76)
Figure 19 - MR-76 Wheels/Pressure Board Standoff Locations
SECTION K - Replacing the Keyboard (MR-76)
SECTION L - Replacing the Keypad/Display Boards (MR-76)
SECTION M - Replacing the Disk Drive (MR-76)
SECTION N - Replacing the Power Supply Board (MR-76)
Module Part Numbers.45
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Important Things to Know about the Mr-61 and
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How the Mr-61 and Mr-76 Works.12
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Service Manual
P/N 9312002401
ENBONiaT
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February 1997
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