SHARP SP1689 Technical Report

Date: Jan. 20, 1994

COPIER : SF-2035

1. CHANGE IN REVERSE ROLLER LEVER SPRING IN THE PAPER FEEDING UNIT.

2. ADDITION OF REINFORCEMENT MYLAR TO THE OPTICAL BASE PLATE. (TO IMPROVE
HARNESS PROCESSING).

3. PERMANENT TROUBLE SHOOTING MEASURES FOR H4 TROUBLE (H4 TROUBLE
SHOOTING).

4. ELIMINATION OF THE FREE BUSHING IN THE OPERATION PANEL TO IMPROVE
PRODUCTIVITY (IN EXPORT MODELS BOUND FOR SEEG ONLY).

No. : SP-1689

1. Change in reverse roller lever spring in the paper feeding unit.

1.Model name: SF-2035 / 2027 / 2022 / CM 11 / D 19 / D 20 / D 21

2.General: The load of the reverse roller lever spring in the paper feeding unit has been changed

to prevent paper miss feeding.

3.Description: The load of the reverse roller spring has been increased from 275 g to 350 g.
MSPRC1943FCZZ MSPRC1943 FCZ1

4.Action: (Factory action)
SF-2035 / 2027 / 2022: From 1993 Mid-December production.
SF-CM 11 / D 19 / D 20 / D 21: From 1994 January production.

2. Addition of reinforcement mylar to the optical base plate.

1.Model name: SF-2035 / 2027 / 2022

2.General: There is a danger of connection between the upper portion of the copy lamp area and

the operation main middle harness (P/G 2 - 35) which is inserted into the two cut-away
sections in the upper area of the feeding side of the optical base plate. To alleviate this
problem reinforcement mylar has been added.

3.Description: Two sheets of reinforcement mylar have been added to the optical base plate, to

prevent the harness from becoming wedged into the optical base plate.

Added reinforcement mylar: PSHEP3571FCZZ (Quantity: 2).

SHARP CORPORATION Reprography Division

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Green

C

Front side.

Added reinforcement mylar.

Rear side.

Optical base plate.

4.Action: (Factory action)
From 1994 January production.

3. Permanent trouble shooting measures for H4 trouble.

1.Model name: SF-2035. (Information concerning models SF-2022 / 2027 has been reported in T/R

SP-1638.)

2.General: Information concerning H4 trouble shooting was reported in T/R SP-1597, but the main

harness of the lower unit has been changed as a permanent trouble shooting measure.

3.Description: The HL control line of the main harness in the lower unit has been installed with 1KΩ of

resistance. In accordance with this change the relay harness, open connector and
binding band have all been eliminated.

Main harness of the lower unit:

DHAI-2120FCZZ DHAI-2282FCZZ

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