.-
‘“-—- “‘“‘“”” ““ “ “’”“-:’-’
SF–7700
SF–775O
me reference pointfor the lens home postion sensor (normal
mode) may be changed usingtest command48. Changingthe
reference numberchanges the point at which the lens stopsin
the 1:1 mode. ~is replaces the need to physicallymove the
LHPS:for adjustment.
me referencepointof the homepositionsensorcorrespondsto the
lens number. Adjustmentmust be done when the mim bases A,
B, and C are incompleteparallelismand the copy imageis inexact
focus.
Adjustmentis rquirad for any of the followingreasons:
. Aftermovingor replacementof the lens home positionsensor.
. After replacementof the lens.
. Afterreplacementor change in the tocationof the mirrorbase.
● After replacementof the main PwB.
● When.the troublestatus U2 is displayd.
● After replacementof an IC3 (RAM) withinthe main PWB.
@ Place the scale over the originaltable as shownbelow.
@ Make a copy on the A4 or 8-1= x 11”paper.
@“Compare the scale image on the copy paper withthe lengthof
the scale.
@ Obtainthe vertiti diractioncopymagnificationratio@mpansa-
tion value withthe foltowingformulain use.
Veticsl directioncopy mwnificatiorr ratio compensationvatue .
(MRc~ = (ofiginaiaie‘-~w imagesize) x“,m%
originalsize
(Example)
IOOmmde
(orginal)
lmm s~er man
theale image
onthe-Y (1%)
Vertti dir-on ~ magnfi~thn
=t~)x 1~= 1 [s]
rati m~astion vkue (MRCV)
10– 13
. ,.
. . . .
.. .
..
.-...
@ Executetest command48.
Push C ~ P + O+ P + [4] - [8] ~ [PS~.
With this, the previouslystoredpresetvatue is displayed.
@ Obtain the verticatdirectioncopy magnificationratioadjustment
presetvatue in the followingway:
Vetical direction copy magnificationratio adjustment preset
value =, previous preset value (displayed at @) + vetical
directioncopy magnificationratio compensationvalue (MRCV)
x 10
(Ex)
Previouspresetvalue’= 50, Verticaldirectioncopymagnification
ratiommpensation value (MRCV) = 1[Yo]
Vefiical directioncopymagnificationratioadjustingpresetvalue
= 50 + 1 x 10 = 80
.@ Enterthe newve~ical direction@py magnificationratioadjusting
presetvalue.
❑ + ❑ + Psw.
Changingthepresetvalueby“~”changesthecopymagnification
ratio0.17..
@ Make a copy in the rrormatmode and mmpare the scale image
on the copy withthe actual lengthof the Wale.
@ If the size of the scaleon the copy image matches with the
actuat scale size, the adjustmenthas been mmplete. Repeat
steps @ through@ untilthe adjustmentis Schievw.
@ Can@l test command48.
Press the CLEAR key.
(11) Copy leadedge adjustment
COPYlead edge adjustment is r~uired for any of the following
reasons:
● Afterreplacementor relocationofthe mirrorhomepositionsensor
(MHPS).
. Afler replacementor retocstiorr.ofthe mirrorb&e.
● After replacementof the.PS rolteror PS clutch.
. After replacementof the main PWB,
● After replacementof an IC (RAM, IC3) withinthe main PWB.
● When the troubtestatus U2 is disptayed.
● After rapl~~nt or relocationof optical componentssuch as
lens, mirror,mirrorbase.
In the norrnd mode, image lossshouldbe Oto 3.Ommand the voti
area Oto 3mm.
Copy lead edge, image loss, and void area adjustmentsare done
withtest command50 and 58. ~ PSS activationtimingisadjusted
by test command 50 in order for the image on the o,riginatto be
copiedon the given area of the copy paper.
tmmediatetyupondea~vation.of the mirrorhome positionsensor
(MHPS) after the mirror base has started to move, the time and
pulses are countedwithinthe CPU. ~ PSS is adve when the
time and puises set by test command 50 are reached. ,~ time
from when the MHPS turnedoff until the PSS wms ative differs
a~dingtotheentarg, hormat,andredummodes. (S~500nly)
Wti test command58, the blink tampdeactivationtime is adjusted
to adjustthe copy lead edge void area.
NOTE:~ecopyleadedgevoid areais ~heived bytheblanklamp.
5
A. Plaa the scaleon the otiginalWble.
~,
&
L
,
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