SHARP SP1565 Technical Report

Date: Apr. 20, 1993

COPIER : SF-2022

RELEASE OF A NEW VERSION PROGRAM ROM (VER. 5.00 TO 5.01)

1. A NEW TEST COMMAND 25-03 ADDED TO ELIMINATE APPEARANCE OF A BACKGROUND AT AN EARLIER STAGE DEPENDING ON OPERATING CONDITION

2. ADF COUNTER READING DOES NOT MATCH WITH THE DUPLEX COUNTER READING

No. : SP-1565

1.Model name: SF-2022/2027

2.General 1. A timer incorporated to ex tend t he preliminary dr um rotation t ime during

warmup

2. Correcting discrepancy of t he ADF and duplex counter contents

3.Reason: 1. To get toner control operation stabilized during power on

2. To correct the disc repancy of the A DF counter c ontents agai nst duplex counter contents

4.Description: 1. Test command 25-03 is newly employed to allow extending the preliminary drum rotation time during the warmup cycle. To avoid appearance of background in field depending on the operating condition(i.e. not so many copies produced in a day), a test command parameter “30" should be entered. It had been factory set to ”0", in which case the preliminary drum rotation will be two seconds as is now.

Setup method: Do the test command 25-03 and enter 30.

(Enter “30" to extend the pre-rotation by 30 seconds.)

C0=2 5 PSW 3 0 PSW3PSW

2-➀ Number of document pages l oaded in A DF do not match with t he number

of pages of the ADF/ RADF counter.

2-➂ The bug that counter counts double pages when using the duplex.

These two bugs are corrected. With these software rev isions, there are changes in the part s codes of the ROM and the main PWB.

Current New ROM VHI27C01007FC VHI27C01009FC Version numbe Ver 5.00 Ver 5. 01 Main PWB CPWBN0928FC52 CPWBN0928FC54

SHARP CORPORATION Reprography Division

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Green

5.Action: (Factory action) Since mid-February 1993.

Ref.

Model

No.

SF-2022

1. Interchangeable. 4. Not interchangeable.

2. C urr e nt t y pe c a n be u s ed i n place of n ew type. New ty pe cann ot be us ed in place of curr ent type .

3. C urr e nt type c a nn ot b e us e d in p l ac e o f ne w ty p e. New t y pe c a n be u s ed i n pl a ce of cur ren t ty p e.

Parts m ar ke d wi th “ ” is im p ort an t fo r m ain ta in ing the sa fe ty of the s e t. B e sur e t o rep l ace these pa rts wi th

specified ones for maintaining the safety and performance of the set.

name

2027

Version P/G No.

32 -67

All

9-4

32 -901

Current parts New parts

Parts code Parts code

VHI27C01007FC VHI27C01009FC BB

CPWBN0928FC52 CPWBN0928FC54 CC Main PWB 6

Price rank

5. Interc ha ng ea ble i f r ep l ace d wi th s a m e typ es of relate d pa r ts in us e.

6. Others. (The existing main PWB can be used,if its

Parts name

EP-ROM (Ver 5.01)

ROM is replaced with the new version ROM.)

Effective time

Mid-Feb. 1993

Interchangability

Note

SP-1552 SP-1558

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