DUPLICATOR : SD-4085
Date
:
Jun. 18, 1997
1. MEASURE TO ALLEVIATE PROBLEMS OF IMAGE MISALIGNMENT AND TEARING OF THE GLASS
MYLAR IN THE RDH.
2. MEASURE TO ALLEVIATE PROBLEMS OF CRACKING OF THE COATING OF THE UPPER HEAT ROLLER.
3. MEASURE TO PREVENT PROBLEMS OF DISLOCATION OF THE ORIGINAL DOCUMENT SIZE RACK IN
THE RDH.
4. CHANGE IN THE VERSION OF THE MAIN ROM AND THE RDH ROM, AND CHANGE IN THE PART
CODES.
No. : DTE-302
1. Measure to alleviate problems of image misalignment and tearing of the glass mylar
in the RDH.
1.Model Name: SD-4085
2.General: The changes described below have been carried out as a measure to alleviate problems
of image misalignment in the RDH and problems of cracking of the RDH glass mylar.
3.Description: <1>A change in the shape of the No. 1 exposure roller has been carried out: (cuts have
been carried out on both ends; a change in the size of the diameter has been carried
out: ø 36.2 has been changed to ø 36.)
<2>A change in the shape of the No. 2 exposure roller has been carried out: (cuts have
been carried out on both ends.)
<3>The addition of an exposure pressure roller has been carried out: (the added
exposure pressure roller is to be used in place of the cuts carried out on both ends
described in <1> and <2> above.)
<4>A change in the shape of the No. 1 register roller has been carried out: (a change in
the size of the diameter has been carried out: ø 23.7 has been changed to ø 24.)
<5>A change has been carried out in the driven roller of the No. 1 register: (the shaft
revolving type has been changed to a bearing revolving type.)
<6>The RDH glass mylar has been discontinued.
Actions <1>, <2>, <4>, and <5> have been carried out as a measure to alleviate
problems of image misalignment.
Actions <1>, <2>, <3>, and <6> have been carried out as a measure to alleviate
problems of tearing of the glass mylar.
4.Action: From the start of 1997 April production.
SHARP CORPORATION Reprography Division
1/5
Green
C
2. Measure to alleviate problems of cracking of the coating of the upper heat roller.
1.Model Name: SD-4085
2.General: There were some problems reported from the markets of cracking of the coating on the
surface of the upper heat rollers. As a measure to alleviate this problem a change has
been carried out in the maker. In accordance with this change a change has also been
carried out in the part code.
3.Action: From the start of 1997 April production.
3. Measure to prevent problems of dislocation of the original document size rack in the
RDH.
1.Model Name: SD-4085
2.General: The addition of a plastic block was used to apply pressure was carried out as a
temporary measure to prevent the original size rack (P/G [48]-14) in the RDH original
document tray unit from becoming disengaged from the original document spring (P/G
[18]-10) when it moved during operations. As a permanent measure to alleviate this
problem, however, the addition of a hooked section to the plastic block of the original
document tray base (P/G [48]-9) has been carried out.
3.Action: Running change from 1997 May production.
4. Change in the version of the main ROM and the RDH ROM, and change in the part
codes.
1.Model Name: SD-4085
2.General: An upgrade of the ROM in the main PWB and in the RDH PWB had been carried out
without carrying out a change in the part codes, but in order to establish a means for
distinguishing between the machines in stock in the markets and the machines with the
new ROM version upgrades, a change has been carried out in the part codes of the new
ROM versions, and are hereby reported.
2/5
3.Description: Main ROM:
Factory action: Old: (V 4.0*) VHIHN409606FC
Market action: Old: (V 3.0*) VHI27C24001FC
V 4.09 and V 3.11 listed above are both the same level upgrade, but they are not
interchangeable.
RDH control PWB ROM
Please refer to the section entitled ‘‘History’’ described below for detailed information
concerning the content of the changes included in the upgrades of the ROMs.
New: (V 4.09) VHIHN409607FC
New: (V 3.11) VHIHN409608FC
Old: (V 3.0*) VHI27C51282FC
New: (V 3.05) VHI27C512D8FC
3/5
<History>
SD-4085
Main ROM
ver. no.
V 4.05
↓
V 4.06
V 4.06
↓
V 4.07
V 4.07
↓
V 4.08
V 4.08
V 4.08
↓
V 4.09
Factory action
Content of the changes carried out in the main ROM.
As a measure to improve problems of late reversion
during copy paper reversion operations while the machine
is running in SD/DD mode, the OFF setting of the
reversion solenoid (DRS) when DPPD1 was set to ON
has been discontinued. The DRS was previously set to be
turned OFF 110 ms after the DPPD2 was set to ON, but
this has been changed and now the DRS is set to be
turned off 60 ms after the DPPD2 is set to ON.
A change has been carried out as a measure to alleviate
problems of copy image misalignment on the front side of
the last page of copy paper. This problem occurred during
late one-cycle detection of the RDH during back cover
copy operations carried out in DD mode. (measure 40/40).
A change has been carried out so that the number of
lift-ups of the paper feeding tray when the OPVD does not
turn ON during RDH paper feeding operations. The
maximum number of lift-ups has been changed from 5
times to 10 times. In accordance with this change, a
change has also been carried out in the maximum waiting
time of the machine when the RDH paper feeding
operations are late. The maximum waiting time of the
machine has been changed from 3 sec to 5 sec.
In order to increase the margin preventing 3-hole paper
reverse jams, we have changed the reverse section’s
paper feed detection sensor (DPPD2) so that even if
3-hole paper hooks on it, the sensor will not detect the
DPPD2’s OFF within 100mm after the DPPD2 turns ON.
Effective
time
Mid-
’97/1
1st lot
’97/2
1st lot
’97/3
1st lot
’97/4
1st lot
’97/6
Content of the changes carried out in the RDH ROM.
The paper feeding retry step count has been changed
from 20 to 5. This change has been carried out as a
measure to alleviate problems of w-feeding in the RDH.
A change has been carried out so that the number of
lift-ups of the paper feeding tray when the OPVD does not
turn ON during RDH paper feeding operations. The
maximum number of lift-ups has been changed from 5
times to 10 times. This change has been carried out as a
measure to alleviate problems of copy paper jams in the
RDH.
A change has been carried out in the OFF timing of the
exposure clutch (OEXC). This change has been carried
out as a measure to alleviate problems of image
misalignment. The timing has been changed from the
instant the OPD5 is set to OFF to a new timing of 80 ms
after the OPD5 is set to OFF.
A change has been carried out in the lift halt position
when the machine is set to ’READY.’ This change has
been carried out as a measure to improve operationability
during original document feeding operations.
A change in the lower limit sensor (OPDD) has been
carried out so that 360 STEP will be the new position from
when it is set to ON instead of 330 STEP as it was
previously.
RDH ROM
ver. no.
V 3.02
↓
V 3.03
V 3.03
V 3.03
↓
V 3.04
V 3.04
↓
V 3.05
4/5
Market action
Main ROM
ver. no.
V 3.08
↓
V 3.09
V 3.09
↓
V 3.10
V 3.10
↓
V 3.11
As a measure to improve problems of late reversion during copy paper reversion operations while the
machine is running in SD/DD mode, the OFF setting of the reversion solenoid (DRS) when DPPD1 was set
to ON has been discontinued. The DRS was previously set to be turned OFF 110 ms after the DPPD2 was
set to ON, but this has been changed and now the DRS is set to be turned off 60 ms after the DPPD2 is set
to ON.
A change has been carried out as a measure to alleviate problems of copy image misalignment on the front
side of the last page of copy paper. This problem occurred during late one-cycle detection of the RDH during
back cover copy operations carried out in DD mode. (measure 40/40).
A change has been carried out so that the number of lift-ups of the paper feeding tray when the OPVD does
not turn ON during RDH paper feeding operations. The maximum number of lift-ups has been changed from
5 times to 10 times. In accordance with this change, a change has also been carried out in the maximum
waiting time of the machine when the RDH paper feeding operations are late. The maximum waiting time of
the machine has been changed from 3 sec to 5 sec.
In order to increase the margin preventing 3-hole paper reverse jams, we have changed the reverse
section’s paper feed detection sensor (DPPD2) so that even if 3-hole paper hooks on it, the sensor will not
detect the DPPD2’s OFF within 100mm after the DPPD2 turns ON.
Content of the changes carried out in the main ROM.
4.Action: From the start of 1997 April production.
Ref.
No.
1
[1]
1
[2]
Model
name
Version P/G No.
56 -24 NROLR1146FCZ2 NROLR1199FCZZ
55 -41 NROLR1149FCZ1 NROLR1200FCZZ 2nd exposure roller N
Current parts New parts
Parts code Parts code
Price
rank
1st exposure roller N
BT
Parts name
Factory action
version
The same as
main V 4.07
The same as
main V 4.08
Effec-
tive time
Inter-
change-
ability
Note
1
[3]
1
[4]
1
SD-4085 All
[5]
1
[6]
2 24 -40 NROLT1130FCZ1 NROLT1130FCZ2 CA Upper heat roller
3 48 -9 CDAIU0548FC03 CDAIU0548FC06 AZ Original tray base
4
<Interchange>
1. Interchangeable. 4. Not interchangeable.
2. Current type can be used in place of new type.
New type cannot be used in place of current type.
3. Current type cannot be used in place of new type.
New type can be used in place of current type.
Parts marked with ‘‘ ’’ is important for maintaining the safety of the set. Be sure to replace these parts with
specified ones for maintaining the safety and performance of the set.
56
55
56 -26 NROLM1147FCZZ NROLM1147FCZ1
56 -5 NROLM1148FCZZ NROLM1148FCZ1
2 -83
72 -73
83 -40 VHI27C51282FC VHI27C512D8FC AW RDH ROM [IC705] V 3.05
---- NROLR1201FCZZ BP Exposure pressure roller Q’ty 2
BA 1st resist roller N
PSHEP4310FCZ1 Discontinued ---- TG sheet 6
VHIHN409606FC VHIHN409607FC
VHI27C24001FC VHIHN409608FC V 3.11
BG Main ROM [IC264]
5. Interchangeable if replaced with same types of
related parts in use.
6. Others.
1st lot
’97/4
1st lot
’97/4
’97/5
Running
change
1st lot
’97/4
3
3
V 4.09
5/5
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