Canon CLC 1120 Service Handbook page 200

CHAPTER 4 SERVICE MODE
Code
4 primary output, grid output, Y developing
assembly bias output
5 primary output, grid output, Bk color
developing bias output
4-114
High-voltage output Description
drum motor ON
pr-exposure lamp ON
photosensitive drum 1 rotation
primary output, grid output (500 V) ON
Y developing assembly locked, developing
bias (AC/DC) ON
(wait for stop command; equivalent of
photosensitive drum 10 rotations)
Y developing assembly unlocked, developing
bias (AC/DC) OFF
primary output, grid output OFF
photosensitive drum 1 rotation
pre-exposure lamp OFF
drum motor OFF
drum motor ON
pre-exposure lamp ON
photosensitive drum 1 rotation
primary output, grid output (500 V) ON
Bk color developing assembly locked,
developing bias (AC/DC) ON
(wait for stop command; equivalent of
photosensitive drum 10 rotations)
Bk developing assembly unlocked,
developing bias (AC/DC) OFF
primary output, grid output OFF
photosensitive drum 1 rotation
pre-exposure lamp OFF
drum motor OFF
Table 4-9b
COPIER>FUNCTION