Canon imageRUNNER ADVANCE C3500 III Series, Service Manual, Page: 747 / 1252

COPIER (Service mode for printer) > FUNCTION (Operation / inspection mode) > CCD
DF-WLVL4 1 White level adj: stream reading, B&W
Detail To adjust the white level for stream reading by setting the paper which is usually used by the user
on the DADF.
Use Case - When replacing the Copyboard Glass
- When replacing the Scanner Unit
- When replacing the Main Controller PCB/clearing the Reader -related RAM data
Adj/Set/Operate Method 1) Set paper on the DADF.
2) Select the item, and then press OK key.
Caution Be sure to execute this item after DF-WLVL3.
Display/Adj/Set Range During operation: ACTIVE, When operation finished normally: OK!
Related Service Mode COPIER> FUNCTION> CCD> DF-WLVL3
Supplement/Memo - In the case of DADF (reverse model)
The Scanner Unit (for front side) calculates the white level correction coefficient based on the
luminance at copyboard reading detected with DF-WLVL3 and the luminance at stream reading
detected with DF-WLVL4.
- In the case of DADF (1-path model)
The Scanner Unit (for front side) calculates the white level correction coefficient based on the
luminance at copyboard reading detected with DF-WLVL3, the luminance at stream reading
detected with DF-WLVL4, and the luminance at stream reading that the Scanner Unit (for back
side) detected with DF-WLVL4.
BW-TGT 1 Set of B&W shading target value
Detail After the white level data (X/Y/Z) for the Standard White Plate is set, read the Standard White Plate
and set the black and white shading target value.
Use Case
When replacing the Copyboard Glass/Scanner Unit
Adj/Set/Operate Method
Select the item, and then press OK key.
Caution
Be sure to execute this item after execution of COPIER> ADJUST> CCD>W-PLT-X, W-PLT-Y, W-
PLT-Z.
Related Service Mode COPIER> ADJUST> CCD> W-PLT-X/Y/Z, SH-TRGT
■ CST
COPIER (Service mode for printer) > FUNCTION (Operation / inspection mode) > CST
MF-MAX 1 Reg MP Tray max width standard value
Detail To register the standard value of the maximum width on the Multi-purpose Tray.
Make a fine adjustment by COPIER> ADJUST> CST-ADJ> MF-MAX.
Adj/Set/Operate Method 1) Align the guide of the Multi-purpose Tray with the maximum width.
2) Select the item, and then press OK key.
The value is registered after automatic adjustment.
Caution After execution, check the registered value by COPIER> ADJUST> CST-ADJ> MF-MAX, and write
it down on the service label.
Display/Adj/Set Range 0 to 255
Related Service Mode COPIER> ADJUST> CST-ADJ> MF-MAX
COPIER> FUNCTION> CST> MF-MIN
8. Service Mode
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