Ensoniq eps epsm service manual
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Page 1
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THE TECHNOLOGY THAT PERFORMS
Performance Sampler
EPS'm
PIN 9312 000 701-B
Page 2
important Things to Know About the EPS/EPS-M
Communications Path
Checking the Power Supply
Power Supply Measurements ..................
Transformer and Power Supply Voltage Check Points
TABLE OF CONTENTS
Testing the Power Supply Unloaded .................
Display Self-test Mode ...................... . . . .
Using Self-test Mode to Diagnose the Keypad/Display .............. 7
Troubleshooting Guide ......................
EPS/EPS-M Diagnostics .....
Most Commonly Asked User Questions ...............
EPS/EPSM Test Procedure ................
EPS/EPSM Burn-in Test Program _
EPS Hardware Notes . . .........
EPS-M Hardware Notes
Software Notes (OS 1.1 to OS. 2.35) t . ............
Section A
Section B
Section C
Section D
Section E
Section F
Section G
Section H
Section A
SeCtion B
Section C
Section D
Section E
Section F
Section G
Section H
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Replacing the EPS Main Board ......... . . .
Replacing the EPS Keypad/Display Board . ........
Replacing the EPS Keyboard ..........
Replacing the EPS Power Supply Board
Replacing the EPS Transformer ...........
Replacmg the EPS Pitch/Mod Wheel Assembly ......
Replacing the EPS Line Filter ............
Replacing the EPS Disk Drive ..........
Replacing the EPS-M Main Board ..............
Replacing the EPS~M Control Panel ........
Replacing the EPS-M KPC Board ..............
Replacing the EPS-M Power Supply Board
Replacing the EPS-M Transformer . . .......
Replacing the EPS~M OEX-8 Board ..........
Replacing the EPS-M Line Filter . .
Replacrng the EPS-M Disk Drive . . .
Communications Path .............. . .
AC Line Voltage Check Points ...............
Power Supply Voltage Check Paints .............
Main Board Component Locations .............
No LEDs Lit (flow chart) t . . . .
Some LEDs Lit (flow chart) ........ . , . .
All LEDs Lit, No Display (flow chart) ......... . .
All LEDs Lit, No Display, Continued (flow chart) .....
Mono to Stereo Cable Wiring ................
EPS Exploded View ...............
EPSButtonColors
EPS Bottom of Case ....................
EPS-M Exploded View ............
EPS/EPS-M Service Manual
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May 1989