Canon C2050 Service Handbook page 197

<IMG-REG>
Use it to adjust the image position. (Color displacement may be corrected using <color
displacement correction> in user mode. This mode is intended for entering data after replac-
ing the DC controller PCB.)
REG-H-Y/M/C
Use it to adjust the image write start position (main scanning direction; in
relation to the LED exposure unit).
• It keeps the Bk setting unchanged, while changing other color settings to
suit the Bk setting to correct color displacement.
Settings -70 to +70
Default Factory setting
An increase by '1' shifts the image toward the rear by a single pixel.
REG-V-Y/M/C
Use it to adjust (coarse adjustment) the image write start position (sub scan-
ning direction; in relation to the LED exposure unit).
• It keeps the Bk setting unchanged, while changing other color settings to
suit the BK setting to correct color displacement.
Settings -48 to +48
Default Factory setting
An increase by '1' shifts the image toward the trailing edge by a single
pixel.
REG-VS-Y/M/C
Use it to adjust (fine adjustment) the image start position (sub scanning di-
rection; in relation to the LED exposure unit).
• It keeps the Bk setting unchanged, while changing other color settings to
suit the Bk setting to correct color displacement.
Settings -7 to +7
Default Factory setting
An increase by '1' shifts the image toward the trailing edge by a 1/16 pixel.
SERVICE MODE
COPIER>ADJUST
S-55