Making Copies/Prints (Half Speed); After Replacing The Drum Unit (D-Unit) - Canon iR C3200 Series Service Manual

Chapter 9
When Making Y/M/C Monochrome Copies/Prints
If not for Bk (i.e., for Y, M, C), a high voltage is applied for the 4 colors as for full-color output when making
monochrome copies/prints. (Exposure is not executed for colors other than those in question.)
When Making Bk Monochrome Copies/Prints
When making Bk monochrome copies/prints, no high voltage is applied for Y or M, and the developing motors
for these colors are not driven.

9.3.4 Making Copies/Prints (half speed)

Full color, Thick paper/Special paper/Transparency, A4, 2 copies/prints, Y drum unit
Characteristics
- in response to a press on the Start key, the photosensitive drum and the intermediate transfer belt (ITB) start to rotate
- the sequence of operations of the drum units after exposure starts with a delay of 1.5 sec
- the photosensitive drum and the ITB continue to rotate after paper has been discharged from the fixing unit
(for post-imaging control)
Drum/ITB
motor (M1)
Exposure (Y)
Charging (DC)
bias (Y)
Charging (AC)
bias (Y)
Development
motor (Y)
Developing (DC)
bias (Y)
Developing (AC)
bias (Y)
Upstream auxiliary (DC)
bias (Y)
Upstream auxiliary (AC)
bias (Y)
Downstream auxiliary (DC)
bias (Y)
Primary transfer
bias (Y)
Secondary
transfer bias

9.3.5 After Replacing the Drum Unit (D-UNIT)

When a new drum unit (D-UNIT) has been installed,
Characteristics
- when a drum unit is fitted and the machine's front cover is closed, the developing cylinder starts to rotate.
- so that the developing cylinder may be coated evenly with developer, the cylinder is rotated for 30 sec at the
beginning
- if the drum unit is not new, this sequence is not executed; the sequence used at power-on (1) or (2) is executed
- about 150 sec after the drum unit has been fitted, image stabilization control is executed in the following order
discharge current level control
ATVC control
ATR control
9-10
Start key
ON
PSTBY PINTR PRINT
15sec
• Y Drum Formation Sequence (thick paper/special paper/transparency)
LSTR
7sec 25sec
Scraping off toner
by auxiliary brush
Scraping off toner
by auxiliary brush
F-9-9
0000-4482
PSTBY
Cleaning by second-
ary transfer roller
0000-4483