SHARP SP2044 Technical Report

Date: Oct. 7, 1996

COPIER : SF-2035

No. : SP-2044

1. PREVENTING LCD C ON TRO L PWB AND TRANSISTO R ( Q204) BREAKD OWN.

2. CREATION OF A 500 CASSETTE P APE R SUPPL Y UNIT REPLACEM ENT PART KIT.

1. Preventing LCD control PWB and transistor (Q204) breakdown.

1.Model Name: SF-2035

2.General: If the connection between the LCD control PWB and LCD is incomplete (incomplete

connector lock), excessive current may flow to the transistor (Q204) in the LCD controller PWB, causing damage. For this reason, the machine is being modified as indicated below:

3.Description: We are changing the circuitry in the communication data line. We are also changing the transistor (Q204) and adding a resistor.

47k

R208

4.7k

-REM-19V

Circuitry change

+5VLCD

TP8

C206

10V 47µF

D201:RLS-73

C218

22000PF

IC201 78L05

INOUT

CN204-7

-19VLCD

TP7

Q204

VS2SD592A//-IT

Change

-19V

VRS HT3AA911J

R233 R232

R234 VRD-RC2EY161JT

Add

Q203 DTA144GK

4.Action: From the first unit of May, 1996 production.

SHARP CORPORATION Reprography Division

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Green

2. Creation of a 500 cassette paper supply unit replacement part kit.

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

2.General: In order to improve serviceability, we have created a kit including the paper feeding unit

replacement parts discussed in TR SP-2004. Furthermore, in the first paper feeding units, reinforcement boards (LPLTM4057FCZZ) were not always installed. They will be included in the replacement kits.

Pick up roller NROLR1114FCZZ

Paper feed roller NROLR1049FCZZ

Reverse roller NROLR1093FCZZ

PF bearing NBRGP0549FCZZ

Bearing NBRGP0550FCZZ

Torque limiter spring MSPRC2382FCZZ

Pick up roller gear 18T LSTPP0321FCZZ 500 cassette paper feeding kit

Paper feed roller gear 18T NBRGC0559FCZZ DKIT-0334FCZZ

Reverse roller lever MLEVP0691FCZZ

Reverse roller lever spring MSPRC2383FCZZ

Screw (M3 X 8) XEBSD30P08000

Resin color PCLR-0373FCBZ

Reinforcement board LPL TM4057FCZZ

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