Note:a and c represent points 10 mm from either side.Table 10-203a. Measuring the NipWait for 15 min after the copier has completed its warm-up period, make 20 A4copies, and measure the nip.1) Select A3.2) Open the copyboard cover.3) Select ‘NIP’ in service mode ( ).4) Press the ] user mode key.The copier will pick up A3 copy paper and become ready for measurement as shownin Figure 10-245.Reference:The paper will stop between fixing rollers halfway and then will be deliveredautomatically after about 20 sec.5) Measure the nip.4. Adjusting the Fixing ClutchIf you have replaced any of the component parts shown below, adjust the gapbetween the 41T gear q and the control ring w so that it is 0.1 to 0.3 mm (equivalent offour sheets of 64 g/m 2 plain paper) with a set screw e.Figure 10-246qwe]4]COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR. 1997 PRINTED IN JAPAN (IMPRIME AU JAPON)CHAPTER 10 TROUBLESHOOTING10-34Dimensionb|a-c|Measured when both upperand lower rollers have beenheated sufficiently.7.3±0.5mm0.5mm or less