ENSONIQ ASR-88 - Default Chapter; Table of Contents

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 Board 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
ASR Case (Avoid Stripping Screws). ................................................................................... 6
High - retention Force Connectors (Repair Technicians
Label)
...........................................
6
OEX-6sr Connector on ASR Keyboard and ASR-88 Caution! Important! ..........................
7
HOW THE
ASR WORKS..
...................................................................................
. ............. 7
Keyboard and Rack Similarites..
...........................................................................................
9
Communications Path ...........................................................................................................
9
TROUBLESHOOTING
CHECKING THE POWER SUPPLY ..............................................................................
12
Analog Board Regulator Voltages ........................................................................................ 12
POWER SUPPLY
VOLTAGE CHECK POINTS .......................................................... 13
Fuse Ratings
..........................................................................................................................
13
TESTING THE POWER SUPPLY UNLOADED
...........................................................
14
CHECKING THE DISPLAY
............................................................................................
16
DISPLAY SELF-TEST
MODE ......................................................................................... 16
Using Self-Test Mode to Diagnose
the Keypad/Display Board.. .......................................... 16
Troubleshooting an ASR-10 With No LEDS Lit ..................................................................
17
Troubleshooting an ASR-10 With All LEDS Lit, No Display ............................................. 18
KEYBOARD AND FOOTSWITCH INPUTS
.................................................................
19
The ASR-10 Keyboard and the KPC Simulator Board.. .......................................................
19
ASR-10 Footswitch and Patch Select Inputs ........................................................................
19
ASR-88 KEYBOARD ........................................................................................:................ 20
Key Response Problems.. ......................................................................................................
20
Pressure Response
Problems.. ............................................................................................... 22
ERROR MESSAGES ......................................................................................................... 23
ASR-10188 SOFTWARE NOTES.. ........ . ........................................................................... 25
ASR TEST PROCEDURE.. ............................................................................................... 35
1. Power Up and Load in Sounds.. ........................................................................................ 35
2. Keyboard
Test (ASR-10188 Keyboard Only) ................................................................... 35
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ASR Service Manual