[11] COPY QUALITY ADJUSTMENTS
1.
The copy quality must be adjusted for any of
the followlng reasons:
.
●
●
✎
✎
●
✎
✎
✎
Atthe time of maintena~e.
Afterthe drum cunent adjustments,after the mronas or mrorra
wiresare replaced,or aftera h@hvobge unitia r~kced.
Afterrqlacing the CLC Pm unitor .ti mmponerrte.
Afteradjustingthe VR ontheCLC PWB.
Afterreplacingthe autoexposuresensor(AE).
After replacing,adjusting,troubkhooting, or dieasseti~ of the
optial syatem(c~y lamp,rektor, etc.).
Afterdisassembling,frodks~ng, or adjustingthe opticalsys-
tem.
Afterreplacingthe OPC drum.
Aftermovingthe exposurecontrolpkte.
2. Steps required before the copy qual~y
adjustments are made
1)
2)
3)
4)
5)
3.
Ckan the componentsin the ophd system (tabk gkss, kns,
mirror,copylamp, and refbctor).
Clean the auto exposure sensor sudace with an sir bbwer
(UKOGMO04%SZZ). Bbw duet offwiththe air bkwer facingthe
AE sensorslit.
Ckan the coronawires (MCU, ~CU).
Cban the develo~r unit.
Ckan the area near the
OPCdrum.
Copyqualityadjustingprocedure
See the flowchart(nextpage).
NOTE: Perform the manual exposure adjustment first, then the
autoexposureadjustment.
When the manual exposureadjudng pot is movdr it abo
affects the auto exposure. Therefore, the auto exposure
mustbe adjustedafterthe manualexposureadjustmmt.
Descrlptlon
● Plain foursheetsof blati white paper, 120mm x 360mm, on top
of each other and ~ace the test chart (UKOG@6WS~ or
KODAKgray scab, sothat the gray scatspotion ofthe testchti
can be copied.
Test ohafiorKODAKgray -k
\
Test ~art (UKOG408XS~
White p-r (lay two sheetsof B4 fo~ed intohalo.
= Set k in the manual ~~ure mode udng the manu~auto sx-
posuresetectkey. The autoexposureindketortums off.
EXPOSURE
● AUTO
o
.
Manual exposure
MANUAL mode(LED0~
LIGHT
DARK
● Adjueti~ VR andAE corr=tion swit~ Iaation.
Autoexposureadjustfngpot ~Rl)
\ Manuatexpoeureadjuating~tN~)
\
I
I
PotAer
JIIL
D
N L1 LZ
Auto
exposurecorrectionswitch
. Bask mpydensity (Manualexposure1.0 (Lght))
0.2 0.3 0.5 0.7
‘KoG-oo8gcszz—m
Not oopied-
L Lghtfy
C~iSd
2345
KODAK GRAY SCALE
A
Not qied-
- LightfyC~iSd
. Basiccopydensity(Manual expoeure5.O(Darfk))
0 0.1 0.2 0.3
UKOG–0089CSZZ
& 4
● Basiccopydensity(Autoexposure)
0 0.1 0.2 0.3
uKOG–0089CSZZ
11–1
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