SHARP DTE105 Technical Report

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).

2.General: If the size guide lock of the 2000 tray disengages, the 2000 tray becomes stuck and

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

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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

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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)

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