Canon GP200, Service Manual, Page: 273 / 458

t t
L-TEST5: grid test print
• Use it to check straight line and angles.
• If a discrepancy is noted, suspect a dis-
placed laser beam or a fault in beam detec-
tion.
y y
L-TEST6: vertical line test print
• Use it to check straight lines.
• If a discrepancy is noted, suspect a dis-
placed laser beam or a fault in beam detec-
tion.
u u
L-TST7: horizontal line test print
• Use it to check straight lines.
• If a discrepancy is noted, suspect a dis-
placed laser beam or a fault in beam detec-
tion.
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3–219
COPYRIGHT © 1996 CANON INC. CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
3. OPERATIONS AND TIMING