Laser - Canon iR C3200 Series Service Manual

18.5.1.3 LASER

18.5.1.3.1 L-ADJ-O
Operation method
Note
18.5.1.4 CST
18.5.1.4.1 MF-A4R, MF-A6R, MF-A4
Operation method
T-18-70
Automatically adjusts laser emission quantity.
Execute this item in the following cases:
- If a laser unit was replaced (if the Y, M, C or K unit was
replaced or if multiple units were replaced simultaneously)
- If the DC controller PCB was replaced
- If the DC controller PCB's RAM was cleared
1) Remove all 4 color drum units, and close the front cover.
2) Select this item, and press the OK key to execute the
operation. The operation stops automatically.
3) When automatic adjustment has finished, 'END'is displayed
in thescreen.
The DC controller uses the photo diode in the laser unit to
automatically measure the light quantity when each laser emits
its minimum light quantity. This operation is used to
compensate the time the laser lights during minimum light
quantity emission.
Each laser unit (Y/M/C/K) is adjusted in sequence.
T-18-71
Registers basic value of manual feeder's (DADF's) paper width.
A4R width: 210mm, A6R width: 105mm, A4 width: 297mm
- Once registered, the basic value can be fine-tuned by executing COPIER>
ADJUST > CST-ADJ > MF-A4R, MF-A6R or MF-A4.
1) Place A4R size paper in the manual feeder, and set the size guide to the A4R
width.
2) In this service mode, select 'MF-A4R' to display the item in reverse. Press the
OK key to perform automatic adjustment and register the value.
3) Repeat Steps 1) and 2) to register the basic values for the A6R and A4 sizes.
Chapter 18
0000-5423
0000-5424
18-83