Developer Initialization - Gestetner B147 Service Manual

6.2.7 DEVELOPER INITIALIZATION

After installing a new development unit, you set "Enable" in SP5-999-005, 006, 007,
or 008 for the machine to detect the new unit. When detecting a new unit, the
copier initializes the developer.
First, the copier agitates the developer for about 100 seconds. Second, it adjusts
V (control voltage for TD sensor) so that V
CNT
0.1 volts. Third, the copier stores this V
V is corrected for the current humidity every print job. V
CNT
the total number of prints, to prevent the developer Q/M from varying.
If the humidity correction is giving poor
results (for example, if the humidity sensor
[A] is broken), it can be disabled with SP2-
223-2. Then a value for V
manually using SP2-224-1 to -4 (adjust by
trial and error).
During developer initialization, the machine
forcibly supplies toner because there is no
toner inside the toner transport tube at
installation. Then the machine does the
process control self check.
SM
T
as V
T REF
must be input
CNT
[A]
6-19
PROCESS CONTROL
(TD sensor output) becomes 3.5 ±
.
is also corrected for
CNT
B147/B149/B190
B146D903.WMF