Sharp AR-F152, Service Manual

Page: 98 / 170

Main code Sub code Content
46 01 Copy density adjustment
(Outline)
Used to adjust the copy density in each copy mode.(The copy density can be set by changing the set value of
ASIC GAMMA ADJUST register.)
Setting in each copy mode is performed at exposure level 3. When the copy density (exposure) is adjusted
arbitrarily, the max, and min. exposure levels are automatically calculated and set. (The change amounts
(gradient, change amount) at level 1 – 5 are predetermined.)
(Operation/Procedure)
1. When this simulation is executed, warming up and shading are performed and the current set value is
displayed in two digits.
2. Press the copy mode select key to select each setting mode and setting display.
∗
The copy mode setting is indicated with the following lamps as shown below.
3. Change the setting with the value up-down key and press the START key, and a copy will be made with the
entered set value.
4. Press the clear key to store the set value and exit the simulation.
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.
12 FAX density overall adjustment
Used to set the normal mode density setup value added with each FAX resolution mode correction value to
each FAX resolution mode collectively.
(Operating procedure)
When this simulation is executed, warming up and shading are performed and the currently set value is
displayed in 2 digits. (Center value: 50)
Change the set value with the value up-down key and press the PRINT switch. The entered value is stored and
the simulation is terminated.
During this mode, the resolution mode cannot be selected.
The range of values dispalyed after execution of this simulation is 0 - 99 with 50 as the center.
∗
when reading FAX, the AE density can be selected in three levels (Dark, Normal, Light). However, in this
mode, copying is made in Normal. (There is no manual setup in reading FAX.)
13 FAX density adjustment (Standard mode)
Used to set the density set value in the normal mode individually.
(Operating procedure)
Same as the FAX density overall adjustment.
Copy mode Display lamp
AE mode AE mode lamp
TEXT mode TEXT mode lamp
PHOTO mode PHOTO mode lamp
TS mode (TEXT) TEXT mode lamp & PHOTO mode lamp
TS mode (AE) AE mode lamp & PHOTO mode lamp
Relationship between the displayed values and the GAMMA ADJUST register
Exp1 Exp2 Exp3 Exp4 Exp5
AE –24 –12 0 +12 +24
TEXT –24 –12 0 +12 +24
PHOTO –24 –12 0 +12 +24
T/S –24 –12 0 +12 +24
AR-F152
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