7-61COPYRIGHT © 2001 CANON INC. CANON CLC1000/1000S/3100 REV.2 MAY 2001 PRINTED IN JAPAN (IMPRIME AU JAPON)7. TROUBLESHOOTING IMAGE FAULTS/MALFUNCTIONS6. Grid Test Print (PGTYPE=06)Use the grid test print to check color displace-ment, right angles, and straight lines.To select a color, use service mode:TEST>DENS - Y/M/C/K.a. Color DisplacementIf color displacement is noted, suspect a fault inthe transfer belt.Color displacement on this test print does notnecessarily mean color displacement on regularcopies because of black text processing. Themechanisms are normal as long as color displace-ment is not noted on regular copies. (Use this testto find out the location of displacement and thecolor if color displacement is noted on regular cop-ies.)b. Right Angles/Straight LinesIf a fault is noted in relation to right angles orstraight lines, suspect a displaced laser beam or afault in the beam detection mechanism.Figure 7-307
