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DTE105
Technical Report
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SHARP DTE105 Technical Report

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Date: Dec. 29, 1993
DUPLICATOR : SD-3076
1. TROUBLESHOOTING THE INSERTION AND REMOVAL OF THE 2000 TRAY.
2. BOTTO M HE AT ROL LE R SH AFT CHANGE TO IM P RO V E SERVICABILITY.
3. PREVENTION OF CRACKING OF THE AREA AROUND THE SCREW HOLES OF LOWER INTAKE DUCT 500.
4. CHAN G E IN DR IV E R INTEGRATED CIRCUIT (TO MEET THE NE E D S OF MA RKET DEMAND.)
5. CHANGE IN RELAY (I/F) CIRCUIT BOARD (TO INCREASE COMMUNICATION SPEED).
No. : DTE-105
1. Troubleshooting the insertion and removal of the 2000 tray.
1.Model name: SD-2075 / 3075 / 3076 (inch series).
cannot be removed. To remedy this problem the plate spring has been strengthened.
3.Reason: The plate spring of the size guide lock is too light and is easily warped. Whenit warps, the size guide lock becomes disengaged, and the size guide catches onto the plate of the machine chassis preventing the 2000 tray from being removed.
4.Description: The thickness of the plate spring has been changed from 0.3 to 0.5 mm, and a stiffer spring material has been used. This stiffer, thicker spring then undergoes low heat tempering for greater resistance to warping.
Changed size guide lock plate spring (both front and back frame). (MSPRP1881FCZZ → MSPRP1881FCZ1)
5.Action: (Factory action)
From 1993 December production.
SHARP CORPORATION Reprography Division
1/8
Green
C
2. Bottom heat roller shaft change to improve servicability.
1.Model name: SD-2075 / 3075 / 3076
2.General: The lower heat roller shaft is incorporated in the lower heat roller assembly bymeans of
bearings. When servicing the assembly, however , the bearings are extremely difficult to take apart. To facilitate servicing, a C-ring has been added.
3.Reason: To improve serviceability.
4.Description: A groove has been added in the lower heat roller shaft for the C-ring. With the C-ring
attached, the bearings are removed with the lower heat roller shaft when it is removed from the lower heat roller.
Added C-ring.
5.Action: (Factory action)
From 1993 Mid-October production (USA). From 1993 November production (other).
Changed lower heat roller shaft (added groove for the C-ring).
Old New
Bearings cannot be removed.
C-ring
Bearings can be removed. PRNGP0057FCZZ
2/8
3. Prevention of cracking of the area around the screw holes of lower intake duct 500.
1.Model name: SD-3075 / 3076 / 2075
2.General: The dimensions of the fixing screws of lower intake duct 500 in the air paper supply unit
have been changed to prevent cracking of the area around the screw holes at the bottom of the duct when the screws are tightened during the production process.
3.Reason: To prevent cracking of the area around the screw holes of lower intake duct 500.
4.Description: Screw length has been changed from M4 x 12 P-tight to M4 x 10 P-tight to prevent
cracking. The diameter of the lower intake duct 500 screw holes are φ0.2 mm larger than before, which also contributes to preventing cracking when tightening the screws.
Changed screws. (XEBSD40P12000 → XEBSD40P10000)
Changed area.
Changed area.
Lower intake duct 500.
* The parts codes for lower intake
duct 500 have not been changed.
5.Action: (Factory action)
From 1993 July production.
Changed area.
Changed area.
Changed screws.
Detail.
(φ3.4 → φ3.6)
(φ3.4 → φ3.2)
3/8
4. Change in driver integrated circuit (To meet the needs of market demand.)
1.Model name: SD-3075 / 3076
2.General: The maker of the master PWB driver integrated circuit has been changed for the
reasons described below.
3.Reason: To increase productivity.
4.Description: Integrated circuit IC511 in the master PWB has been changed from M54537 to
TD62504. Caution: There are old integrated circuits other than the IC511.
Location No. Old. New. Parts name.
IC511 VHIM54537P/-1 VHITD62504/-1 Driver integrated circuit.
5.Action: (Factory action)
From 1993 August production.
5. Change in relay (I/F) circuit board (To increase communication speed ).
1.Model name: SD-3075 / 3076
2.General: The changes described below have been carried out on the relay circuit board used in
the PPC communication system to increase communication speed and to improve operationability.
3.Reason: Due to the large discrepancy in the answer speed of the relay circuit board photo coupler and small margin for communication speed (9600 bps), the photo coupler has been changed to a high speed reply type and a low resistance transistor has been incorporated.
4.Description: The photo coupler has been changed to a high speed reply type, and a low resistance transistor has been incorporated.
4/8
Old New Parts name Notes
VHPPC827///-1
VHPPC837///-1 (3 per package)
VRD-RC2EY271J
VSDTC114YL/-1 VSDTC114YS/-1
Old layout. New layout.
(2 per package)
VHPPC900V//-1
Change in quantity Resistance (271Ω )
VRD-HT2EY331J Resistance (330Ω) Quantity: 2 (R3, R6)
PC1
PC2
Photo coupler (PC827) PC1, PC2
Photo coupler (PC900V)
Transistor (DTC114YS)
PC3, PC4
Quantity: 6 to 4. From R1 to R6, R3 and R6 have been changed.
Q1
PC2
PC4 PC1 PC3
5/8
Interface PWB (Current)
PC1 PC837
PC2 PC837
6/8
Interface PWB (New)
Change
Change
Change a
porint
7/8
Change
Change
Ref.
No.
1
2
Model
name
SD-2075
3075 3076
SD-3076
3075 2075
Version P/G No.
Inch
series
9 -88
25 -156 NSFTZ1478FCZZ NSFTZ1478FCZ1 AY
25 -72
25 -157
Current parts New parts
Parts code Parts code
Price
MSPRP1881FCZZ MSPRP1881FCZ1 AF
Parts name
rank
Size G lock spring
Lower heat roller shaft.
PRNGP0057FCZZ Change in quantity. — C-ring (φ17).
Effec-
Inter-
tive
change-
time
Note
ability
’93/12 3 Q’ty: 2
From mid­Oct.,
1993.
5
Q’ty: 2 → 4
3
6 -C35
XEBSD40P12000 XEBSD40P10000 AA
Screws (M4 x 10 P-tight).
’93/7 Q’ty: 4
Driver integrated
VHIM54537P/-1 Quantity change —
4
55 -54
circuit
(M545379).
’93/8
Driver integrated
— VHITD62504/-1 AG
circuit
(TD62504).
5
SD-3075
3076
All
60 -901 CPLTM4130FC52 CPLTM4130FC53 BK
60 -15 VHPPC837///-1 VHPPC827///-1 AG
60 — VHPPC900V//-1 AH
60 -17 VRD-RC2EY271J Quantity change —
60 — VRD-HT2EY331J AA
60 -18 VSDTC114YL/-1 VSDTC114YS/-1 AB
I/F circuit board unit.
Photo coupler
(PC837 → PC827).
Photo coupler (PC 900V).
Resistance (270Ω).
Resistance (330Ω).
Transistor (DTC114Y8).
’93/11
<Interchange>
1. Interc ha ng ea bl e. 4. N ot i nt er ch an ge ab l e.
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
!
5. Interchangeable if replaced with same types of relate d parts in use .
6. Others .
specif ie d ones fo r m ai n ta ini ng t he s a fe ty an d pe r fo rma nc e o f the set .
Q’ty:
—
6 → 5
— IC511
Refer to
3
DTE-080
3 per package changed to 2 per
5
package.
PC3, PC4
6 → 4
—
(R3, 6 change)
Q’ty: 2
1
(R3, 6 )
1Q1
8/8
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