Sharp SF-7300 - Page 9

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SF-7300
SF-7350
1.Removing the cassette prot=tive tape
(1)
Take outthe cassetteand removethe protectivetape.
4. Copy ch=k
Copy CM is rquired at every maintename call.
(1)
Image skew
1.5mm, m=imum
(2) Void area and image loss
B
Makea copymthe
normal mode and chedr to see that the void
area and the image 10ssare withinthe givenlimits.
Sde marg
in voti area
5 to 8mm
Lead edge image loss
2.*1 .5mm
Side marginim~e 10ss
3.3 to 9.7mm
(3) Copy density
1) Manual exposure
(1) Place the test chart (UK~Q88CS~ or KODAK Way
scale on the tiginal ta~e.
B
(2)
Set the machine in the manual exposuremode usingthe ex-
posuremode se~ key.
The sopydensityirrdisatorturnsoff.
Set the exposuremntrd knobto 1,0 (light).
(3)
Make a copy in the normalmodeand e- the copydensity.
Baaio-y density(manual exposureat 1.0 (light))
0.2
0.3 0.5 0.7
uKoG-oo’gcszz-
B
..T.Y LLght,copied
2345
KODAK GRAY SCALE
h
(4) Set the exposurecorrtrdto 5.0 (dark).
(5)
Make a copyinthe normalmodeand chesktie copydensity.
Bask -y density(menud exposureat 5.0 (daA))
0 0.1 0.2
0.3
UKOG–0089CSZZ
4+
9
A123
KOOAK GRAY SCALE
44
2) Auto exposure
(1) Plaoe a test chad onthe originaltebb
—
Plase foursheets of blankwhite paper, 120mm x 360mm, on
top of each other and pk= the teat chad (UK@-
O08XSZZ) or
KODAKgray s~b bestie or on it, sothat the gray ssak pcr-
tionof the test chartiscopied.
Teat *rt or KODAKgray scab
\
Teat &art (UK=40890Sq
/
White sheet ofpaper (~o sheets ofS4 or 10”x 14=paperfokfed
doub~)
(2)
(3)
(4)
Settinginthe autoexposuremode
Set the machine in the
autoexposure mode UsiW the ex-
posures~t key.
Open the frontpanel.
Set the AE correctionswitchtothe positionN.
JIIL
D
N L1 L2
Autoexposure(AE) -ection switch
Make a copymthe normalmodeand CM the copydensity.
Baeb -y dens~ (autoexposure)
0 0.1 0.2 0.3
UKOG–0089CSZZ
N~*& ~LQht~c~#
A123
KODAK GRAY SCALE
~f
If the copydensityis notwithinthe limits,refer to the pr-ure
de~ribed in“[l 1] Copydensityadjuatrne~.
(4) Resolution
Makeone
copy in the enlarge mode (x1.4), normal mode (x1.0),
and reclusemodes(xO.8,xO.7orxO.75,xO.W).
CW to see thatresolutioniswithinthe limitsbdow.
I
I
center of Cwv
I
corner ofcopy
1
. .
Normalmode (1OOYO)
5.0 Iinedmm 4.5 line@mm
Enlargemode(12470)
5.0 Iinedmm
4.5 Iirredmm
Redue mode (800A,750A)
4.0 IineSmm 3.6 Iirre#mm
Reduce mode(700A,84Y0)
4.0 Iinedmm
3.6 Iinedmm
Where hah of lineson the test chartcan b seen isthe resolutionof
the c~y.
2–6
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