(lo)
Measure the current at the front and rear frame sties. The
currentd.fierencemustbe *thin 2.@.
a.
b.
Turn the main power on and enter test command9. The
main hgh vobge unkwillactivatefor30 seconds.
Measure the dmm current at the front and rear frame
sides.
● When the teat harness microswitchis off, the front
frame tie currentis indicatedon the meter.
● When the test harnessmicroewitchb on, the rearframe
sidedrum currentis indkated on the meter.
,(OFF)
,(ON)
c. MAe sure that a current difference k not greater than
2.@.
If the current d~erence is greater then 2.@, repface the
coronaunit.
(11) Adjuetthe MHVG outputcurrent.
● Turn the main power on and enter test command 9. The
main highvohge unitwiflactivatefor30 SSC*.
● Adjustthe MHVG outputadjusting@ kcated on the high
vobge unitso that the MHVG outputcurrentshouM be at
27*.
b. Transfer corona output adjustment:
(1)
(2)
(3)
(4)
Connectthe ND t&t lea&to the meter, in referenceto (3)-
a~ to 0.
Cban the transfer corom wire, and mount the tranafer
corona urrft m the copier. The main corona unit may be
mounteddurfngthe measurement.
Performthe procedure(3)-a@ to0.
Measure the current at the front and rear frame sides. The
ourrentd.tierencemustbe-in 2.~.
a. Turn the main power on and enter test cornmd 10. The
transferhighvoftegeunitwiflactiate for30 seconds.
b. Measure the drum current at the front and rear frame
Skks.
● When b teat hameae microewitchis off, W front
frame aide currentis indbated onthe meta.
● When the test harnessmfcroawitchk on,the rearframe
sfdedrum currentis itikated on the mater.
/(OFF)
,( ON)
4
c. M+e sure that a currant difference b not greeter than
2.W.
If the current difference is greater than 2.%, reptace the
coronaunit.
(~ Adjuetthe THVG outputcurrerrt.
● Turn the main power on and enter teat command 10. The
transferhighv~e unitwillactfvatefor30 seconds.
● Adjuetthe THVG outputadjustingpot focatedonthe highvoR-
age urrkso that the MHVG outputcurrent ehouMbe at 12.0
*1.*.
SF-7200
SF-7M
C.
AdjuetingpotIomtlons
THV6pot
Rear frame stie
..
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