• Code: 106.01
• Description: Service Yellow Printhead
  The yellow printhead lost HSYNC.
• Remedy: 1 Turn the printer off, and remove the rear shield. See “Rear shield removal”. Check the cable at JMIRR1 for proper connection to the controller board, the printhead cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the printhead. See “Printhead removal”. Go to step 2.
  2 Turn the printer on, and then wait until the printer posts an error. Using a voltmeter, check the following values at JMIRR1: Are the values approximately correct? Replace the controller board See “Controller board removal”. Replace the printhead. See “Printhead removal”.

• Code: 106.02
• Description: Service Yellow Printhead
  The yellow printhead failed to complete servo.
• Remedy: 1 Turn the printer off, and remove the rear shield. See “Rear shield removal”. Check the cable at JMIRR1 for proper connection to the controller board, the printhead cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the printhead. See “Printhead removal”. Go to step 2.
  2 Turn the printer on, and then wait until the printer posts an error. Using a voltmeter, check the following values at JMIRR1: Are the values approximately correct? Replace the controller board See “Controller board removal”. Replace the printhead. See “Printhead removal”.

• Code: 106.03
• Description: Service Yellow Printhead
  The yellow printhead mirror motors failed to achieve lock.
• Remedy: 1 Turn the printer off, and remove the rear shield. See “Rear shield removal”. Check the cable at JMIRR1 for proper connection to the controller board, the printhead cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the printhead. See “Printhead removal”. Go to step 2.
  2 Turn the printer on, and then wait until the printer posts an error. Using a voltmeter, check the following values at JMIRR1: Are the values approximately correct? Replace the controller board See “Controller board removal”. Replace the printhead. See “Printhead removal”.

• Code: 106.04
• Description: Service Yellow Printhead
  The yellow printhead mirror motors lost motor lock.
• Remedy: 1 Turn the printer off, and remove the rear shield. See “Rear shield removal”. Check the cable at JMIRR1 for proper connection to the controller board, the printhead cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the printhead. See “Printhead removal”. Go to step 2.
  2 Turn the printer on, and then wait until the printer posts an error. Using a voltmeter, check the following values at JMIRR1: Are the values approximately correct? Replace the controller board See “Controller board removal”. Replace the printhead. See “Printhead removal”.

• Code: 106.05
• Description: Service Yellow Printhead
  Failure reading NVRAM from printhead
• Remedy: 1 Turn the printer off, and remove the rear shield. See “Rear shield removal”. Check the cable at JMIRR1 for proper connection to the controller board, the printhead cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the printhead. See “Printhead removal”. Go to step 2.
  2 Turn the printer on, and then wait until the printer posts an error. Using a voltmeter, check the following values at JMIRR1: Are the values approximately correct? Replace the controller board See “Controller board removal”. Replace the printhead. See “Printhead removal”.

• Code: 106.06
• Description: Service Yellow Printhead
  The yellow printhead thermistor is open.
• Remedy: 1 Turn the printer off, and remove the rear shield. See “Rear shield removal”. Check the cable at JMIRR1 for proper connection to the controller board, the printhead cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the printhead. See “Printhead removal”. Go to step 2.
  2 Turn the printer on, and then wait until the printer posts an error. Using a voltmeter, check the following values at JMIRR1: Are the values approximately correct? Replace the controller board See “Controller board removal”. Replace the printhead. See “Printhead removal”.

• Code: 106.07
• Description: Service Yellow Printhead
  The yellow printhead thermistor isshorted to ground.
• Remedy: 1 Turn the printer off, and remove the rear shield. See “Rear shield removal”. Check the cable at JMIRR1 for proper connection to the controller board, the printhead cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the printhead. See “Printhead removal”. Go to step 2.
  2 Turn the printer on, and then wait until the printer posts an error. Using a voltmeter, check the following values at JMIRR1: Are the values approximately correct? Replace the controller board See “Controller board removal”. Replace the printhead. See “Printhead removal”.

• Code: 106.08
• Description: Service Yellow Printhead
  The yellow laser showed bad in testing.
• Remedy: 1 Turn the printer off, and remove the rear shield. See “Rear shield removal”. Check the cable at JMIRR1 for proper connection to the controller board, the printhead cable for pinch points, and the cable or connector for any other damage. Is the cable damaged? Replace the printhead. See “Printhead removal”. Go to step 2.
  2 Turn the printer on, and then wait until the printer posts an error. Using a voltmeter, check the following values at JMIRR1: Are the values approximately correct? Replace the controller board See “Controller board removal”. Replace the printhead. See “Printhead removal”.