SHARP SP1580 Technical Report

Date: Apr. 30, 1993

COPIER : Z-52II

No. : SP-1580

TROUBLESHOOTING APPEARANCE OF AN L
TROUBLE STATUS

1.Model name: Z-52II/57II

2.General: For it may be probable t o evoke an “L” trouble if t he COPY swit ch pres sed

immediately after power on and idle drum rotati on with the m achine was not
warmed up sufficiently ( 100°C or below), correction is done to the software.

3.Cause: Because the software does not allow the main motor to start to run if the copy
switch is pressed without the power down temperature detection (WTLL) being
active, which will cause the L trouble t o occur as the origi nal table would not
return. This problem would occur when the fuser temperature is still under
100C.

4.Description: The software is revised so as to activate MMR and turn the main motor when
the copy switch is pressed. As a make shift solution, the table return clutch
(TRC) signal is sent to MMR via a diode t o st art the main motor to start
running. A parts code change is involved for CPU and main PWB after this
software change.

5.Action: (Factory action)

Makeshift : Since the first production.
Permanent : From April 1993 (soft ware revision)

SHARP CORPORATION Reprography Division

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Green

C

Ref.

Model

No.

Z- 52II

<Interchange>

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

57II

Version P/G No.

11 -1 VHI7508HCUR21 VHI7508HCUR23 AV

All

11 -901 CPWBF0964FC52 CPWBF0964FC53 BF Main PWB ’93/4 6

!

Current parts New parts

Parts code Parts code

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. ( T he e x ist i ng m ai n P WB c a n be u s ed ,
if its CPU is replaced with the new version CPU.

Price
rank

CPU
(IC7508HCUR23)

Parts name

Effec­tive
time

’93/4 3

Inter­change­ability

Note

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