Measurement and adjustment ADF unit height adjustment If the height between the ADF and the glass is not properly adjusted, a transport defect might occur. If a transport defect occurs, check the height between the ADF unit and the glass according to the following procedures and then adjust the gap within the specifications. 1 Remove the following covers: • ADF back cover—See page 107. • Flatbed back cover—See page 113. • Flatbed right cover—See page 114. 2 Close the ADF unit. 3 Measure the gap between the four ADF height spacers and the glass. Make sure the gap is within the ADF unit height adjustment specification (h) of 0.7 mm (0.03 inch) or less.
ADF height spacer (front view) h h ADF height spacer (left view) h h Figure 205. ADF unit height adjustment (1 of 2) Hint The gap is within specifications if a short ruler (0.5 mm thick) does not fit into the gap. 232 Chapter 7 Troubleshooting C8523-90921