SHARP CX152 Technical Report

Date: Feb. 16, 1994

COLOR IMAGE SCANNER : JX-325

No. : CX-152

1.CHANGE IN THE ROM OF THE CONTROL CIRCUIT BOARD.

2.CHANGE IN THE SRAM OF THE CONTROL CIRCUIT BOARD.

3.CHANGE AND DISCONTINUANCE OF CAPACITORS IN THE
CCD CONTROL CIRCUIT BOARD.

1. Change in the ROM of the control circuit board.

1.Model name: JX-325

2.General: In correction of various bugs in the system, the ROM version has been changed from

version “S121B” to version “S121C”

3.Description: Changes from version S121B to version S121C.

Change Content of change

Trouble shooting image

1

quality when installing
JX32F12.

Trouble shooting the

2

disconnect / reconnect
functions.

Trouble shooting SUN work

3

station start ups.

Trouble shooting the GO

4

command [GPIB],
YO/BO/QO [SCSI].

Trouble shooting V2

5

command [SCSI].
Change in ROM version

6

label.

Unnecessary monochrome gray images appear when the 2400 DPI
scanning area is decreased in the sub scanning direction when installing
JX32F12. To alleviate this problem, the monochrome gray data
processing program has been changed.

When a bus recovery failure occurs during the arbitration phase, no
other recovery operations are carried out. To alleviate this problem,
recovery processing is carried out at 1 ms intervals.

The processing method of the SUN work station during start ups has
been corrected to alleviate the problem of work station start up failures
caused by entering commands without returning a message after the
message out.

A scanner error occurs when changing to RED only gamma with the GO
command. To alleviate this problem the processing method during the
change has been changed.

One portion of the V2 command (SCSI) data was incorrect and has been
corrected.

The ROM version label has been changed from S121B to S121C.

4.Action: From 1994 January production.

SHARP CORPORATION Printer and Scanner Division

1/3

Orange

C

2. Change in the SRAM of the control circuit board.

1.Model name: JX325

2.General: There has been a production halt of the old version of the SRAM (VHiCXK 581001M).

In accordance with the production halt, a new version of the SRAM (VHiCXK 581000A)
has been employed.

3.Description: IM SRAM VHiCXK581001M has been changed to VHiCXK581000A.

4.Action: From 1994 January production.

3. Change and discontinuance of capcitors in the CCD control circuit board.

1.Model name: ➀ JX-320, JX-325, JX-32F3

➁ JX-320, JX-325

2.General: Capacitors (C8, 11, 14) have been discontinued in the CCD circuit board to improve
productivity. In addition, a mistake in the parts code of a capacitor used in the control
circuit board 10pF has been corrected.

3.Description: ➀ Three capacitors (RC-SZ7003XCZZ, 25WV 4.7µF) used in the CCD circuit board

(C8, 11, 14) have been discontinued.

➁ The parts code of two capacitors used in the control circuit board (model JX-325:

C25, 26, model JX-320: C32, 33) has been changed from VCCSTQ1HL100J to
VCCSTQ1HL100D (50WV, 10pF).

11-5. CCD board.

11-3. Control board.

11-3-1. Main control circuit.

2/3

➀RC-SZ7003XCZZ (25WV, 4.7µF) in

locations C8, 11, 14 have been
discontinued.

➁Changed to VCCSTQ1HL100D.