Changes
On EME 150A, the drive motor speed regulation is done on the main unit PCB, and is adjusted using VR201.
On Other model (155/156/156V/157), the drive motor includes its own regulation PCB, and adjustment is done on the motor itself., which can be one of the following reference (MMA-xxxxxx, QJN2-xxxx or MMU-xxxxxx)
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File:EME-150A_RpmAdjust.jpg|EME-150 A speed adjust
Rotation speed can be checked either by monitoring the drive index pulse with an oscilloscope or by using dedicated SW like [http://www.cpcwiki.eu/forum/applications/dsktest-v0-1b/ DskTest] or [http://www.amstradtoday.com/resur/rpm.zip RPM].
Adjustment requires a 2mm wide screwdriver. A larger one will not fit in the potentiometer adjustment hole.
On MMA-xxxxxx, the adjustment hole is covered with a white rubber and the internal PCB is facing down. <span style="color:#FF0000">That requires additional precautions : forcing the screwdriver in the hole may detach the potentiometer from the PCB and damage the motor.</span>
On QJN2-xxxx and MMU-xxxxxx, the adjustment hole is covered with a black rubber and the internal PCB is facing up.
== Gallery ==
