Canon GP200 Service Manual page 278

3. OPERATIONS AND TIMING
15. Measuring the Drum Resistance
Item
Photosensitive drum resistance
measurement
SELECT_GAMMA_NUL
setting
AGS_MEASURE setting
3–224
COPYRIGHT © 1996 CANON INC.
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*4* FUNCTION 15 – > ( )
SELECT_GAMMA_NUM=
AGS_MEASURE=-
+
1) Brig up the screen, and press the Copy Start key.
• The resistance of the photosensitive drum will be
measured, and the result will be indicated.
• Execute this mode before changing 'AGSNON' of
'OPTION' in service mode (*5*) to '0' so that the
measurement may be used as a reference.
• For a guide, see the diagram below.
0
-28.0µA
CANON GP215/200 REV.0 JULY 1996 PRINTED IN JAPAN (IMPRIME AU JAPON)
CANCEL
JUMP
(uA)
–
OK
Description
1 2
-36.5µA
-43.0µA
Reference
page
3