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			<title>ImageWriter II: Carriage Motor Makes a Loud Humming Noise</title><body class="ac-gn-current-support">
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<h1 id="main-title">ImageWriter II: Carriage Motor Makes a Loud Humming Noise</h1>
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<BR>
BEFORE YOU START: Familiarize yourself with the ImageWriter II Technical<BR>
Procedures.  Be sure to follow proper ESD procedures.<BR>
 <BR>
PROBLEM: The carriage motor makes a loud &quot;humming&quot; noise when  the carriage<BR>
moves to the left side of the printer upon power up.  This sometimes occurs<BR>
after the printer has been taken apart and reassembled.<BR>
 <BR>
CURE:  Check to make sure the ground strap from the CPU board to the Driver<BR>
PCB is NOT routed around the right side of the motor mount. If the ground<BR>
strap gets between the motor mount and the carriage assembly, the left<BR>
carriage position sensor never detects the carriage, consequently the motor<BR>
stays on as the printer tries to complete the power up sequence. The ground<BR>
strap should be positioned between the motor mount and the left side of the<BR>
case.  If the ground strap is routed correctly see the General<BR>
Troubleshooting Procedures for the ImageWriter II.<BR></div>
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<div class="mod-date">Published Date: Feb 18, 2012</div>
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