1
SF-77OO
SF-?7m
‘+(oF;, -(0” . ~~~~ -x-
: J
rh
&<’
~h x @ MQ
c. Makesurethatacurrent differenceisnotgreaterthan4.O@.
If tie current difference is greater than 4.O@, replace the
I
Q :
coronaunit.
@ Adjustthe THVG outputcurrent.
●Turn the main power on and enter test command 10. The
2
-~?v=-:?? -
transferhighvoltage unit will ativate for 30 seconds.
● Adjust the THVG output adjusting pot located on the high
IF
voltageunitso thatthe THVG outputcurren(shou~ @ at –14
*2.o&.
(Rear~ side)
b. Main corona output ad~u~nt:
~ Corm@ the DCDtestleadsto the meter,in refer- to (3)-a@
@
to @.
~
Clean the main corona wire. The transfer corona unit may W
mountedduringthe measurement.
~ Manuallyset the doorswitchofi.
~ ConnecttheDCDtestleadstothe meter,inreferanceto(3)-a@.
~ Measurethe currentatthefront and rearframesides.Thecument
difference’must& within2.O@.
a. Turnthe mainpoweron and entartast oommand9. The main
highvoltage unitwill activate for 30 ~nds.
b. Measurethedrumcurrentatthefrontsnd rearframesides.
● When the test harness mimswitch is off, the fronttie
Sidecurrentis indicatedon the ~t~.
● When the test harness mi~~tch is on, the reer frame
sidedrum currantis indicatedon the meter.
*(oFF)*(oN)
c Makesurethatacurrentdiffarew isnotgreaterthan2.O@.
If the currentdifferen~ is greater than 2.04, r~hcs tie
coronaunti,
NOTE: A slight flu~ua~n may -r in the current during me
measurement.In Suchan ev~t, read the the value at the
center.
5 tiIus; tne MHVG outputcument.
● Turnthe mainpoweron and enter test command9. me mSin
h!ghvoltageUnitWll[a~ate for ~ ~~s.
. Adjustthe MHVG output adjusting pot located on the high
vOltageunitsothatthe MHVG ou~t cume~ shouti ~ at 22.5
=1.o&.
,’
,
9-3
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