. ... ,. - .. ., ..
6.
CLC PWBadjustment
CLC PWB adjustmentis r~uired for any of the follotirtg reasons:
. After replacementof an IC (RAM IC3) withinthe main PWB.
. After replacementof the CLC PWB.
. Afler replacementof the CLC ‘PWBcomponent.
● After replacementof the main PWB.
(Adjustmentpmedurs)
@
Apply the AC voltmeterto the wall outletto whichthe apier is
connected.
@‘Execute test command92.
c + P -0 + P + 3+ @j + Psw
The supplyvoltage is then displayedin the displaywindow.
Onwhenh su~ Wage is~ to~VAC
.,
I
ONwhenthesupplyvottageis 1000 199VAC
I
k
Displsys&es andt s ofthesupplyvottsge
II
I detmedbvtheCPU
.11x17 LEXTR~
\
●
8xxM
m
● Ssxrru ~
● 8%x5% WR
.
a%xn~ ‘w’
1-
(a):
When the manu~ fed Imp is ON wi~ ’05° in tie mul~~v
window,the supplyvoltage detected by the CPU is 105VAC~~
@ Adjust by means of VRI of the CLC PWB so that the vottage
on the voltmeter should be the same as the supply vohge
shown in the multicopy window. me CPU is not directly
monitoringthe supplyvobge, butthe,supplyvoltageis rectified
to DC level within the CLC PWB to monitorit. Therefore, the
voltage varies when VR1 is mmipulated.)
VRl—
CLCMB
@ Push the CLEAR key to cancel test command92.
7.Installationof the originalsizesensorPWB
me
originatsize detect PWB shoutdbe in~tlad on the u~r side
of opticatunitframe. Do not atlowthe board edge to extent above
the optical unitframe.
CAUnON:
- ~ 00 notdti meboerdqe to
m--- ‘me ~
extendabovetheopti unti
tieme
P
.-..-,:..-. -.... ...
“’
SF–77~
SF–775O
8. Cleaningthe paperseparationsensor
Thepaperseparation
ssnsormustbsASnsdsv~~,000mpias.
@ Open the frames.
@ Remove the paper sepsrattortsensor.
.\
1
@ Ctean the su~ of - paper separationsensor LED and the
phOt0ben9etorusingthe dr -r.
@ Reptam the paper asparadonsensorback in the unit.
NOTE: Do not attowthe paper separationsensorcoverto me in
-~ withthe OPC drum.
\ I
A?-
~w
CPCdrum
‘*;
i—
——
0
/1
I
g. ~ration sensoradjustment
The
paper ssparati sensor
ad-t is ~uirsd for any of the
fottowingreasona:
● Afierrepfacsrn~ntofthapapar~~ti SS~r~ itSComponent.
. Afier raptacementof the paperaeparati sensorcon~l PwB or
its component.
@ Clean the sutia~ of the aaparati ssnsor LED and the
phototransistorwiththe air btower.
@ Open the frontpatret.
@ Removethewashsr_ abovethewtitetoneroollectboffle.
,,
14-4
--- -- ..-=.
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