ENSONIQ EPS 16 Plus Service Manual page 4

Tableo! Contents
EPS-16 PLUS Hardware Notes:
EPS-16 PLUS Keyboard and Rack . . . . . . . . .
Figure 10 -
Trace cut for Rev A, B, or C Main Boards
Keyboard Only . . . . . . . . . . . .
Rack
Only . . . . . . . . . . . . . . .
Figure 11 - Hardware Notes for the Rack .
Error Messages
.
. . . . . .
.'.
.
. .
.
.
Software
Notes:
Checking the Software Version
Bootup ROM Changes . . . .
O.S. Disk Version
1.10 Changes
EPS-16 PLUS Keyboard Only Section . . .
Figure 12 - EPS-16 PLUS Keyboard. Exploded View
Section A - Replacing the EPS-16 PLUS Main Board . . . .
Section
B -
Replacing the EPS-16 PLUS Keypad/Display Board.
Figure
13 -
EPS-16 PLUS Button Colors . . . . . . . . .
Section
C -
Replacing the EPS-16 PLUS Keyboard . . . . .
Figure 14 - Bottom of Case . . . . . . . . . . . . . .
Section D -
Replacing the EPS-16 PLUS Power Supply Board.
Section
E -
Replacing the EPS-16 PLUS Transformer . . . . . .
Section F - Replacing the EPS-16 PLUS PitchIMod Wheel Assembly
Section
G -
Replacing the EPS-16 PLUS Line Filter .
Section H -
Replacing the EPS-16 PLUS Disk Drive.
EPS-16 PLUS Rack Only Section . . . . . . .
Figure 16 - EPS-16 PLUS Rack Exploded View . .
Section A - Replacing the Rack Main Board
. . . .
Section B
Replacing the Rack Keypad/Display Board.
Section
C -
Replacing the Rack KPC Simulator Board.
Section D - Replacing the Rack Power Supply Board
Section
E -
Replacing the Rack Transformer . . . .
Section F -
Replacing the Rack OEX-6 Board . . .
Section
G -
Replacing the Rack Line
Filter. . . . .
Section H -
Replacing the Rack Disk Drive. . ... . .
Section
J -
Replacing the
Rack
Memory Expander Board . .
Drawings
Figure 1 - Scribe . . . • . . . . . . . .
Figure 2 -
Communications Path . . . . . . . . . . .
Figure
3 -
AC Line Voltage Check Points. . .
Figure 4 - Power Supply Voltage Check Points . . . .
Figure 5 - Incorrect Power Supply Voltages (flow chart) .
Figure 6 - Footswitch problem (flow chart) . . . .
Figure 7 - No LEOs Lit (flow chart) . . . . . . .
Figure 8 - Some LEDs Lit (flow chart) . . . . . .
Figure 9 - All LEDs Lit, No Display (flow chart) . .
Figure
10 -
Trace cut for Rev A, B, or C Main Boards
Figure 11 - Hardware Notes for the Rack only.. . . . . . . . .
Figure 12- EPS-16 PLUS Keyboard Exploded View
Figure 13 - EPS-16 PLUS Button Colors . . . . . . . .
Figure 14 -
Bottom of Case . . . . . . . . . . . . . . .
Hgure 16 - EPS-16 PLUS Rack Exploded View . .
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Table of Contents -
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EPS-16 PLUS Service Manual