Gestetner A294 Service Manual page 510

FIRMWARE HISTORY
After Copier Priority has been selected in UP
Mode – Memory Allocation, SC990 or a panel
display reset occurs with large-volume,
continuous print jobs (A4 LEF, LT LEF or
smaller; 1000 pages or more). The timing of
the HDD 1 to HDD2 changeover at memory
full has been optimized to ensure the
error/reset does not occur.
When the 105cpm machine main power is
turned on, the HDD does not come on line
fast enough, and the mainframe informs the
(Peerless) printer controller that there is no
hard drive present, resulting in SC990.
To correct this, the software has been
changed.
1. When the 200th page is scanned to be
stored in the document server, the
scanning stops and a message is displayed
stating that 1000 is the maximum number
of storable pages for a document.
2. SC990 is displayed when the machine
starts printing out the pages stored in the
document server, even if the number of
pages is less than 200.
The above problems occur only with version
7.49
The papers on the left tandem tray does not
move to right if the left tray is installed when
the right tray is empty.
When original jams occur, SC numbers in SC
history of the SMC print may be changed.
The occurrence ratio is high when the number
of original jams is high or the SC counter is
often reset.
A print job does not start when the drum unit
is not properly set, even after scanning
original is done.
While the fusing rollers rotate just after the
main power switch is on, the toner on the
pressure roller cleaning roller is transferred to
the pressure roller and web roller. Then, the
toner may damage the hot roller.
To prevent it, the web roller rotate once every
10 seconds while the fusing rollers rotate just
after the main power switch is on.
The lower limit of Vref is newly set as 1 V.
This is to prevent the Vref becomes too low
causing toner scattering or dirty background
when increasing the image density by
changing the bias for the ID sensor pattern
development.
The A295 model already has this limit
SC990 is displayed when the SICU received
an unexpected signal (noise).
A294/A295
CÓPIA NÃO CONTROLADA
SC990 or display
reset with large-
volume,
continuous print
jobs
SC990 at power
On (105cpm)
The copy server
can not store
more than 200
originals
Papers on left
tandem tray not
move to right
SC numbers in
SC history of
SMC print are
changed
Print not start
when drum unit is
not completely
set
Web roller
movement
change
Lower limit of
Vref
(A294 model
only)
SC990
(FILE:timer.c)
7-52
CÓPIA NÃO CONTROLADA
Rev. 06/2002
7.50
A2945604 P /
A2945264 P
A2945604 Q/ 7.51
A2945264 Q
SM