Sharp AR-121E Service Manual page 100

Main code Main code
46 1
The value displayed after execution of this simulation can be set in the range of 0 - 99 with 50 as the center value.
When the text mode set value is Gat3, for example, the GAMMA ADJUST register value set at Exp1 is:
Text Exp1 = Gat3 - 50 - 24
When 40 is set to Gat3, Text Exp1 = 40 - 50 - 24 = -34
Then set the GAMMA ADJUST register set value to -34.
Perform the same procedure for each mode and each Exp.
* The above table may subject to change.
* For the gradient, there is a similar table, though not specified here. The value set with SIM 46, however, is not reflected.
* The AE mode Exp selection is not specified, but corresponds to the grades for AE exposure selection in the former models.
48 1 Front/rear scanning direction magnification ratio adjustment
(Outline)
(1) Front/rear scanning direction magnification ratio auto correction: (Performed by changing the set value of
ZOOM DATA register for asic.) The width of the reference line marked on the shading correction plate is
scanned to perform the front/rear direction magnification ratio adjustment automatically. (Performed by changing
the set value of ZOOM DATA register for ASIC.)
(2) Front/rear scanning direction magnification ratio manual correction: Used to set the front/rear (main scanning)
direction magnification ratio by key operations. (Performed by changing the set value of ZOOM DATA register for ASIC.)
(3) Scanning direction magnification ratio correction: The scanning direction magnification ratio in the OC mode
is set by key operations. (Performed by changing the scanning speed.)
(4) SPF mode scanning direction magnification ratio correction: The scanning direction magnification ratio in the
OC mode is set by key operations. (Performed by changing the scanning speed.)
(Operation/Procedure)
1. When this simulation is executed, the current set value is displayed in two digits. (Center value: 50)
2. When the copy mode select key is pressed, the setting mode and the setting display are changed sequentially.
* The selected adjustment mode is indicated by the lamps as follows:
3. In the front/rear scanning direction adjustment, when the START key is pressed, the mirror base unit moves to
the white plate for shading and the width of the reference line is read and the correction value is calculated and
displayed and the value is stored.
In the case of the manual adjustment, enter the adjustment value with the 10-key and press the START key. Then
the entered value is stored and a copy is made. (An increase of 1 in the set value corresponds to an increase of 1&.)
4. Press the clear key to store the set value and exit the simulation.
In the front-rear direction magnification ratio correction:
(1) The result of calculation of the scan correction value is +-5% or less, "- -" is displayed.
(Cause) The white plate reference position error or the lens unit installing error
(2) In case of a scanning error of the reference line, the JAM lamp is turned on.
(Cause) CCD error or no white plate
*) If the automatic correction of magnification ratio does not work properly, adjust and correct manually.
Relationship between the displayed values and the GAMMA ADJUST register
Exp1 Exp2
AE -24 -12
TEXT -24 -12
PHOTO -24 -12
T/S -24 -12
Adjustment mode
Front/rear direction magnification ratio auto correction
Front/rear direction magnification ratio manual correction TEXT lamp
Scanning direction magnification ratio correction
SPF mode scanning direction magnification ratio correction AE, TEXT, PHOTO lamps
10-8
Main code
Exp3 Exp4 Exp5
0 +12 +24
0 +12 +24
0 +12 +24
0 +12 +24
Lamps ON
AE lamp
PHOTO lamp
AL-1000/1010