SHARP SP1538 Technical Report

Date: Feb. 9, 1993

COPIER : SF-2022

1.Applicable
models:

No. : SP-1538

1. CHANGE IN THE PAPER EXIT INVERSION AREA (TO PREVENT THE TRAY FROM DROPPING
AND TO IMPROVE THE LOCK)

2. CHANGE IN THE UPPER SUCTION DUCT (FOR PRODUCTIVITY ENHANCEMENT)

3. IMPROVING THE MAIN PWB PAPER ENTRY SENSOR SIGNAL (PID) SIGNAL TOLERANCE

1. Change in the paper exit inversion area (to prevent the tray from dropping and to

improve the lock)

SF-2022/2027

2.General: The following changes are made to the paper exit inversion area.

3.Reason: 1. The paper exit tray might drop due to a shock when opened to remove a jammed

paper.

2. If accessing is repeated, the lock pawl might become loose.

4.Description: 1. Ribs are provided in the tray insertion zone of the paper exit to prevent it from
dropping.

Paper exit

Rib added (at four locations)

2. To improve the locking performance of the paper exit inversion area, the compression
spring is replaced by a tension spring. With this change, holes are newly provided on
the paper exit cabinet and the lock pawl to hold the springs.

Compressing spring
MSPRP1950FCZZ

Changed

Tension spring
MSPRT2033FCZ

SHARP CORPORATION Reprography Division

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Green

C

Newly provided spring

Spring holding hole (newly added)

Paper exit cabinet

Note that, after these changes in springs, new springs cannot be used in the paper exit
cabinet and the lock pawl of the old type.

New paper exit cabinet

GCAB-0752FCZ1

Current paper exit cabinet

GCAB-0752FCZZ

Spring discontinued to use
(MSPRP1950FCZZ)

Current lock pawl

PTME-0221FCZZ

O Yes O Yes

Lock pawl

Spring holding hole
(newly added)

Current spring

MSPRP1950CZZ

New lock pawl

PTME-0221FCZ1

New spring

MSPRT2033FCZZ

O Yes O Yes

X No X No

* When a spring is replaced with a new type, there is a need of replacing the paper exit

cabinet and the lock pawl with the new type.

[ 1 ]

Paper exit cabinet

Lock spring

(1) Lock spring
Hold the hook on the
paper exit cabinet.

Lock pawl

[ 2 ]

Lock spring
The round hook area
must be held in the hole.

NOTE The lock sprin g and t he hook

must be free from deformation.

The hook area must be pushed
in using a long nose pliers.

[ 3 ]

5.Action: (Factory action)
Since August 1992 for the domestic version.
Since the first production unit for the export version.

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