Toshiba Estudio 230 Manual

							June 2004 © TOSHIBA TECe-STUDIO200L/202L/230/232/280/282 ADJUSTMENT
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3.3.6 Adjustment of smudged/faint text
The smudged/faint text can be set at the following  codes.
< Adjustment Mode (05) >
< e-STUDIO 200L/230/280 > 
< e-STUDIO 202L/232/282 > 
* The values in ( ) are the adjustment codes of th e Custom Mode.
Make a test copy and compare the image obtained with  the current settings; if necessary, make 
adjustment using the following procedure.
 
Procedure is same as that of   P.3-21 3.3.1 Density adjustment.
3.3.7 Gamma balance adjustment < e-STUDIO 202L/232/2 82 >
The gamma balance is adjusted by adjusting the density at the Black Mode. The adjustment is per-
formed by selecting its density area from the follo wing: low density, medium density and high density.
< Adjustment Mode (05) >
Original modeItem to be adjusted Remarks
Text/Photo
653
(928) Adjustment of smudged/faint  
spotted text When the value increases, the faint text is improve
d.
When the value decreases, the smudged text is 
improved. 
Acceptable values: 0 to 255 (Default: 192)
Note: Note:  Remember the image specifications and life  
span of the replacing parts may not meet the  
standard when the setting value is changed 
from the default value.
Original mode Item to be adjusted Remarks
Text/Photo
648
(928) Adjustment of smudged/faint 
spotted text When the value increases, the faint text is improve
d.
When the value decreases, the smudged text is  
improved. 
Acceptable values: 0 to 4 (Default: 2)
Note: Note:  Remember the image specifications and life  
span of the replacing parts may not meet the  
standard when the setting value is changed  
from the default value.
Language and screen Item to be adjusted Remarks
Smooth
(PS) Detail
(PS) Smooth
(PCL) Detail
(PCL)
596-0 597-0 598-0 599-0 Low density The larger the value  is, the 
density of the item to be  
adjusted becomes darker. 
Acceptable values: 
0 to 255. (Default: 128)
596-1 597-1 598-1 599-1 Medium density 
596-2 597-2 598-2 599-2 High density
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3.3.8 Adjustment of image density
The image density level can be set at the following
 codes.
< Adjustment Mode (05) >
 (1) While pressing [0] and [5] simultaneously, turn  the power ON.
(2) Key in the code “667” and press the [START] butt on.
(3) Key in the sub code (0, 1, 2, 3 or 4), and press  the [START] button.
(4) Key in an adjustment value. (To correct the keyed-in value, press the [CLEAR] b utton.)
(5) Press the [ENTER] or [INTERRUPT] button to store  the value in memory. The equipment goes 
back to the ready state.
(6) For resetting the value, repeat step (2) to (5). 
(7) Turn the power OFF and then back ON to perform p rinting job.
(8) If the desired image density has not been attain ed, repeat step (2) to (7).
Code Item to be adjusted Remarks
667-0 to 4 Adjustment of image density When the value  is decreased, text becomes lighter.
Acceptable values: 0 to 10
Notes:  1. Set not to reverse the large and small num-
ber of the setting value corresponding to the  
sub code. 
Ex.) When substituting the setting value for 
667-0 with A0,   , 667-4 with A4: A0 A1 A2  
A3 A4
2. Remember that the image specifications 
and life span of the replacing parts may not  
meet the standard when the setting value is  
changed from the default value.
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3.4 Image Quality Adjustment (Printing Function) 
3.4.1 Adjustment of smudged/faint text
The smudged/faint text can be set at the following  codes.
< Adjustment Mode (05) >
 (1) While pressing [0] and [5] simultaneously, turn  the power ON.
(2) Key in a code and press the [START] button. 
(3) Key in an adjustment value. (To correct the keyed-in value, press the [CLEAR] b utton.)
(4) Press the [ENTER] or [INTERRUPT] button to store  the value. The equipment goes back to the 
ready state.
(5) Turn the power OFF and then back ON to perform p rinting job.
(6) If the desired text density has not been attaine d, repeat step (2) to (5).
Language
Remarks
PS PCL
654 655 When the value increases, the smudged text is  improved. When the value 
decreases, the faint text is improved. 
Acceptable values: 0 to 9 (Default: 5) 
						

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3.4.2 Adjustment of image density
The image density level is adjustable both at stand
ard and toner saving modes.
< Adjustment Mode (05) >
 (1) While pressing [0] and [5] simultaneously, turn  the power ON.
(2) Key in a code and press the [START] button. 
(3) Key in the sub code (0, 1, 2, 3 or 4), and press  the [START] button.
(4) Key in an adjustment value. (To correct the keyed-in value, press the [CLEAR] b utton.)
(5) Press the [ENTER] or [INTERRUPT] button to store  the value in memory. The equipment goes 
back to the ready state.
(6) For resetting the value, repeat step (2) to (5).
(7) Turn the power OFF and then back ON to perform p rinting job.
(8) If the desired image density has not been attain ed, repeat step (2) to (7).
Toner mode
Item to be adjusted Remarks
Standard Toner saving
672-0 to 4 676-0 to 4 Adjustment of image density When  the value is decreased, text becomes 
lighter. 
Acceptable values: 0 to 10
Notes:  1. Set not to reverse the large and 
small number of the setting value  
corresponding to the sub code. 
Ex.) When substituting the setting 
value for 672-0 with A0, · · ·, 672- 
4 with A4: A0 A1 A2 A3 A4
2. Remember that the image speci-
fications and life span of the 
replacing parts may not meet the  
standard when the setting value 
is changed from the default value. 
						

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3.5 Image Quality Adjustment (Scanning Function) 
3.5.1 Density adjustment
Adjusts the center density and the variation of den sity adjustment button.
< Adjustment Mode (05) >
 (1) While pressing [0] and [5] simultaneously, turn  the power ON.
(2) Key in a code and press the [START] button. 
(3) Key in an adjustment value. (To correct the keyed-in value, press the [CLEAR] b utton.)
(4) Press the [ENTER] or [INTERRUPT] button to store  the value. The equipment goes back to the 
ready state.
(5) Turn the power OFF and then back ON to perform s canning job.
(6) If the desired image density has not been attain ed, repeat step (2) to (5).
Original mode
Item to be adjusted Remarks
Text/Photo Photo Text
845 847 846 Manual density mode center  valueThe larger the value is, the darker the  
image becomes.
Acceptable values: 0 to 255
850 852 851 Manual density mode light  step valueThe larger the value is, the lighter the  
light side becomes. 
Acceptable values: 0 to 255
855 857 856 Manual density mode dark  step valueThe larger the value is, the darker the 
dark side becomes. 
Acceptable values: 0 to 255
860 862 861 Automatic density mode The larger the value  is, the darker the 
image becomes. 
Acceptable values: 0 to 255 
						

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3.5.2 Sharpness adjustment
If you want to make scan images look softer or shar
per, perform the following adjustment.
< Adjustment Mode (05) >
 (1) While pressing [0] and [5] simultaneously, turn  the power ON.
(2) Key in a code and press the [START] button. 
(3) Key in the sub code (0,1 or 2), and press the [S TART] button.
(4) Key in an adjustment value. (To correct the keyed-in value, press the [CLEAR] b utton.)
(5) Press the [ENTER] or [INTERRUPT] button to store  the value in memory. The equipment goes 
back to the ready state.
(6) For resetting the value, repeat step (2) to (5).
(7) Turn the power OFF and then back ON to perform s canning job.
(8) If the desired image density has not been attain ed, repeat step (2) to (7).
Original mode
Item to be adjusted Remarks
Text/Photo Photo Text
865-0 867-0 866-0 Reproduction ratio: 25% to 40%Key in the following values depend- 
ing on the original mode.
One’s place 
1: Text/Photo 5: Photo 2: Text 
Ten’s place
0: Use Default value 
1 to 9: Change intensity 
 The larger the value is, the 
sharper the image becomes.)
 Example of value entry in case 
the mode is “Text/Photo”.
Note: Note: When the value “0” is keyed in  
at the ten’s digit, the value is  
not displayed on LCD screen.
865-1 867-1 866-1 Reproduction ratio:
41% to 80%
865-2 867-2 866-2 Reproduction ratio: 81% to 400%
2 1Fixed value for Text/  
Photo mode 
Key in a value 0 to 9 
						

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3.5.3 Setting range correction
The values of the background peak / text peak in th e range correction can be switched to “varied” or 
“fixed” in the following codes. 
If they are fixed, the range correction is performe d with standard values.
The values of the background peak affect the reprod uction of the background density and the values of 
the text peak affect that of the text density.
< Adjustment Mode (05) >
 
Procedure is same as that of   P.3-29 3.5.1 Density adjustment.
Original mode
Item to be adjusted Remarks
Text/Photo Photo Text
825 827 826 Range correction for original  manually set on the original  
glassThe following are the default values 
set for each original mode.
Text/Photo: 12, Photo: 12, Text: 12 
Each digit stands for: 
One’s place: Automatic density mode
Ten’s place: Manual density mode 
The setting conditions possible are  
as follows:
Background peak Text peak
1: fixed fixed
2: varied fixed
3: fixed varied 
4: varied varied
830 832 831 Range correction for original 
set on the RADF 
						

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3.5.4 Setting range correction (Adjustment of backgr
ound peak)
The levels of the background peak for the range correction can be set at the following codes.
< Adjustment Mode (05) >
 
Procedure is same as that of   P.3-29 3.5.1 Density adjustment.
3.5.5 Setting range correction (Adjustment of text p eak)
The levels of the text peak for the range correction can be set at the following codes.
< Adjustment Mode (05) >
* The image changes slightly in text mode because it  is treated as a simple binary format image.
 
Procedure is same as that of   P.3-29 3.5.1 Density adjustment.
Original mode
Item to be adjusted Remarks
Text/Photo Photo Text
835 837 836 Background peak for range  correctionWhen the value increases, the back- 
ground (low density area) of the 
image is not output. 
Acceptable values: 0 to 255 
(Default: text/photo: 48, photo: 40, 
text: 48)
Original mode Item to be adjusted Remarks
Text/Photo Photo Text
820 822 821 Text peak for range correction When the val ue is increased, text 
(high image density part) becomes 
lighter. 
Acceptable values: 0 to 255 
(Default: text/photo: 224, photo: 239, 
text: 224)
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3.6 Adjustment of High-Voltage Transformer
When replacing the high-voltage transformer, checki ng each output adjustment of main charger, devel-
oper bias, transfer charger and separation charger  is needed.
3.6.1 Adjustment 
[ 1 ] Preparation
Items to check Developer Bias Main Charger Transfer
Charger Separation
Charger
Process Unit Take off from the equipment. (Not used)
High-Voltage Transformer Jig Install the high-voltag e transformer jig in the equipment.
Note: Note: 
Connect the green cable of the high-voltage transfo rmer jig to ground on 
the equipment frame. Refer to   P.3-34 [A] Installation of the high-volt-
age transformer jig.
Digital  
Tester (+) terminal Connect with the black 
cable of the high-volt- 
age transformer jig. Connect with the red  
cable (thick line) of the  
high-voltage trans-
former jig. Connect with the red cable  
(thin line) of the high-voltage  
transformer jig.
(–) terminal Connect with the white cable of the hig h-voltage transformer jig.
Function switch DC
Full-scale (range) 1000 V 2 V 
Remarks Use a digital tester with an input resistanc e of 10 M (RMS value) or higher.
How to turn ON the power Attach the door switch jig a nd start with the adjustment mode [05] while the front 
cover opened. Then press the front cover opening/cl osing switch.
Note Refer to   P.3-36 [B] 
Connection for devel- 
oper bias adjustment. Refer to 
 P.3-36 [C] 
Connection for main  
charger adjustment. Refer to 
 P.3-37 [D] Con-
nection for transfer/separation 
charger adjustment. 
						

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[A] Installation of the high-voltage transformer jig
(1) Open the bypass tray, ADU and transfer  cover.
(2) Open the front cover and take off the toner 
cartridge.
(3) Disconnect 1 connector. Loosen 2 screws  and pull out the process unit.
Note: Note: Be careful not to let the connector and the  
harness be caught when installing the pro- 
cess unit after adjustment.
 Fig.3-19
(4) Install the high-voltage transformer jig and fix  
it with 2 screws.
Note: Note:  Be careful not to let the connector and the  
harness be caught.
 Fig.3-20
(5) Fix the green cable of the high-voltage trans-
former jig to the frame of the equipment.
 Fig.3-21
Process unit Connector
High-voltage transformer jig
Screw
Green cable
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