Toshiba 5520c Manuel D’Utilisation

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e-STUDIO5520C/6520C/6530C 
© 2008 TOSHIBA TEC CORPORATION All rights reserved 
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2. Copier-specific Adjustments 
2.6.1  To Adjust the Copy Image Quality in the Black Mode 
 
* You can start with any of the procedures.  But it is recommended to perform the procedures in order, as listed 
below.  You can use one procedure in conjunction with another.  But if this changes the image quality more 
than required or loses the effectiveness of the adjustment, restore the settings made in the previously used 
procedure to the original ones.  Then use other procedures. 
* Both the service technician and the user can use procedure (1). 
* Only the service technician must use procedures (2) to (4). 
 
(1)  Press the [IMAGE] button on the Control Panel.  Press the [BACKGROUND ADJUSTMENT] button. 
Press the [LIGHT] button to decrease the background density. 
 
 
After decreasing the background density, copy and check the image quality. 
 
With the background density set to the minimum, if further image quality adjustments are still necessary, the 
service technician must use the next procedure. 
 
(2)  Enter adjustment mode [05]. Change the values for codes [7033], [7034], [7041] to [7044], [7048] and 
[7049] to adjust the density level of the background. 
Adjustment 
Original mode 
[05] code
Recommended 
value 
Accep
table 
value 
range 
Default 
Text/Photo 05-7041 
Text 05-7042 
Photo 05-7048 
Manual density 
adjustment 
Image smoothing 
05-7049 
Text/Photo 05-7033 
Text 05-7034 
Photo 05-7043 
Manual adjustment
Image smoothing 
05-7044 
Set a value smaller 
than 128.  
0 to 
255 
128 
*  Set the value in increments of approximately 25, while checking the copy image until the optimum value is 
obtained. 
 
 
After adjusting the background density, copy and check the copy image quality. 
 
If further image quality adjustments are still necessary, use the next procedure. 
 
(3)  Enter adjustment mode [05]. Change the values for codes [590] to [592] to adjust the gamma balance in 
each of low- and medium-density areas. 
Original 
mode 
[05] code  Subcode
Recommended value 
Acceptable 
value range 
Default
Text/Photo 05-590  0/1 
Text 05-591 
0/1 
Photo
 
05-592 0/1 
Set a value smaller than 128.
0 to 255 
128 
*  Set the value in increments of approximately 20, while checking the copy image until the optimum value is obtained.