Drum Current Adjustment Preparation - Ricoh FT5580 Service Manual

6. Drum Current Adjustment Preparation

NOTE: The drum current varies with environmental conditions such
as humidity and atmospheric pressure.
s h o u l d b e c h e c k e d a n d a d j u s t e d o n l y w h e n t h e c o r o n a
power
specification. This is because each corona unit is adjusted to
a range of environments in the factory.
CAUTION: Make sure that the main switch is turned off when you change the
range on the digital multimeter otherwise it may be damaged.
Make sure that the main switch is turned off when you touch the drum
shoe.
1. Turn off the main switch and remove the following parts:
Drum cover
Charge corona unit
T/S corona unit cover
T/S corona unit
T/S corona paper guide
Drum stay
Pre-quenching corona unit
Cleaning unit
Development unit
Drum flange
Drum -- cover it with the protective sleeve
Drum guide [A]
Rear cover
pack is replaced or the copy
3-59
12 June 1987
T h e d r u m c u r r e n t
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