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GMA050702 

Sharp Electronics (UK) Ltd., Technical Services Group

 

 

 

If any of the above conditions are not met, adjust the density of each colour’s gamut 
by using the up and down arrows. This changes all 15 squares simultaneously. 
(each colour’ “gamut” is represented by 15 squares. - Letters “A” through “O”.) 
 
The next objective is to adjust the individual patch to get the composite black 
strip (CMY mixed) to match the process black strip (Bk) as closely as possible. 
 
1) 

With the first process black strip facing you, label the process black strip from 

left to right, MAX, O, N, M, L, K, J, I, H, G, F, E, D, C, B, and A. (16 squares) This 
will be your reference sheet. 
 
2) 

In order to manipulate the composite black strip so it resembles the process 

black strip as closely as possible, highlight the colour you wish to adjust (C, M, Y, or 
K). Choose the square you wish to adjust, (letter A through O) ,use the ten keys to 
increase or decrease the value, and press “OK”. 

 
 
 
 
 
 
 
 
 
 
 
 
 

 
 
 
 
 
 
 
 

Select Colour 

to be adjusted 

Either Select 1 point to adjust 

1 point at a time or use the up 

and down arrows to adjust all 

15 points simultaneously

 

GMA050702 

Sharp Electronics (UK) Ltd., Technical Services Group

 

 

 

 
You can check and compare the result of your adjustment by pressing “EXECUTE”, 
which prints a current test pattern. 
 
Once the composite black strip (4 colour) has been adjusted, so that it is as close to 
the process black channel, exit the test simulation. 
 
In addition to suit customer requirements, the colour balance for each colour 
exposure mode can be adjusted by using Test Simulations 46-10/11/12/13/14 . 
 
These simulations are identical to test simulation 46-21, except there is no 
“EXECUTE” key. Use the Sharp colour test chart or customer samples, and switch 
between the test command and the user exposure selection to make adjustments. 
 
Press “CLOSE” to leave the simulation, make a test copy after selecting the 
appropriate exposure mode. Press, “TEST” to return to the test simulation and 
make further adjustments.  
 
To save ALL Half Tone adjustments, execute Test Simulation 44-21. Once 
complete, enter simulation 44-06 to perform compulsory engine process control:- 

 

 
Press “EXECUTE”.  
 
The “COMPLETE” box will be highlighted if process control has been performed 
successfully. 
 
If an “ERROR” occurs, repeat the simulation once, then diagnose the cause of the 
error. 
 
Using the Sharp Colour Test Chart (UKOG-0283FCZZ), make test copies and 
confirm copy quality.  
 
This concludes the colour balance adjustment(s). 

 
 
 

 

 

 

 
 

 

 

 

 

 

 

 

 

The exposure adjustment in ALL colour and B/W modes must be performed 
after calibrating the engine. Failure to check or adjust the copy exposure may 
result to excessive background when copying. 
 
  

Cont’d 

 
 

GMA050702 

Sharp Electronics (UK) Ltd., Technical Services Group

 

 

 
Note: Reducing the value reduces the saturation in the low-density area and 
the white area for each copy mode. The saturation in the high-density area is 
not affected. 
 
When adjusting Test Simulations 46-01 and 46-02, it is recommended to use both 
the Sharp Colour Test Chart (UKOG-0283FCZZ) and the Sharp Grey Scale Chart 
(UKOG-0162FCZZ) to adjust the low-density area 

 
 

 

 

 

Adjust the exposure for both B/W & Colour modes as per specification:- 

 
 
 

 

 

 

 

 Using a Sharp Colour Test Chart, adjust each exposure mode in manual exposure 
position “3”, until row 7 of the colour bar chart is absent. This involves switching 
from Test Simulation mode to operator mode 
 
 
 
 
 
 
 
 
 

 

If each exposure mode value is adjusted by a given amount, make a test copy in all 
modes to confirm the copy quality and background level. 

“TEST” icon. 

Press “CLOSE”, to return to 
operator mode. Select the 
exposure mode you wish to 
adjust, then return to test 
command mode by pressing the 
“TEST” icon. 

GMA050702 

Sharp Electronics (UK) Ltd., Technical Services Group

 

 

 

 
 
 
 

 
 

 

 

 

 
 

 

 

 

Using the Sharp Grey scale chart, adjust the B/W exposure mode using  

    Sim 

46-02:- 

 

 
 

 

 

 

Note: The AR-C160 should be adjusted to the same level as AR-C250. 

 

After completion, make test copies using the Sharp Colour Test Chart. If the 
customer is satisfied with the quality, engine calibration is complete. 
 
If an AR-PE1 or PE2 Print Controller is installed, the controller MUST be re-
calibrated, once engine calibration is finished.