Roland EM-2000, Service Notes

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34
EM-2000 Oct, 1998
Calibration procedure to replace the Pitch Bender.
Load the “Software Program” into the instrument. Turn EM-2000 on while keeping the “F2” button pressed.
After a few seconds, the display will show:
Put the Bender lever in the middle while pressing the “Upper 1” button at the same time.
The display shows:
Move the Bender lever completely towards left while pressing the “Upper 1” button at the same time.
The display shows:
Move the Bender lever completely towards right while pressing the “Upper 1” button at the same time.
When the calibration has been completed, the instrument will automatically reset and go back to the initial screen
display of the “Software Program”.
How to visualize the “Software Program” version
Turn the instrument on while keeping the “ WRITE” + “ SHIFT” + RESET/TAP TEMPO buttons pressed.
After a few seconds the display shows:
To exit from this screen display, turn the instrument off.
EM-2000 Arranger Keyboard
Ver. XX . XX
Date Version : Day _ _ Month _ _ Year _ _
CPU Bios Version: Ver. XX . XX
PITCH BENDER CALIBRATION
ALL RIGHT POSITION
Then Press Upper 1 Key
PITCH BENDER CALIBRATION
ALL LEFT POSITION
Then Press Upper 1 Key
PITCH BENDER CALIBRATION
CENTER POSITION
Then Press Upper 1 Key
NOTICE
Adjusting DBeam controller
When you replace CPU PCB ASSY, DBeam controller adjustment is necessary.
1-1. Remove the bottom cover.
1-2 Connect the test probe of the oscilloscope to the Tap Point of the CPU PCB ASSY.
TP 15: +
TP 16: -(GND)
1-3 Adjust the voltage output from TP 15 to 0V by using VR1.
NOTE: When you adjust the voltage, be sure to keep EM-2000 in a horizontal position, and keep
any object and strong light (fluorescent lamp etc.) away from around the photoreceiver.