SHARP CX170 Technical Report

Date: May. 11, 1995

COLOR IMAGE SCANNER : JX-330

No. : CX-170

CHANGE IN CONTROL PWB AND ROM TO
IMPROVE FUNCTION

1.Model name: JX330/M/P

2.General: Changes have been carried out in the control PWB, and in the ROM to improve function

since the first lot of shipment.
The changes carried out up to date are described below.

3.Description: 1) Control, and PS PWB

➀ Alleviating problems with vertical streaking at even spaces during high quality

imaging (greater than 600 dpi) transparance/reflectance reading operations, see
examples.

➁ Supplies power to the terminator for laptop computers.
➂ Adding and eliminating parts in accordance with the change in ROM.

Changes have been implemented on new PWB produced after mid-September
production which correspond to the above problem [For USA: DUNTK7864XCZA
(120V), for Europe: DUNTK7868XCZA (200V)].
The changes listed below should be carried out on only old PWB [For USA:
DUNTK7864XCZZ (120V), for Europe: DUNTK7868XCZZ (200V)].
(Refer to Supplement-1)

2) ROM

After the changes described in ➀ above for the control, and PS PWB have been
carried out on old PWB [For USA: DUNTK7864XCZZ (120V), for Europe:
DUNTK7868XCZZ (200V)], the ROM should be changed to the newest version (S081I).
(Refer to Supplement-2)

Even spaced, vertical lines during high

1

resolution (more than 6000 Pi) transparent/
reflection reading operations.

Even spaced, vertical lines.

SHARP CORPORATION Printer and Scanner Division

1/8

Orange

CS

Ref.

No.

Model

name

Version P/G No.

Current parts New parts

Parts code Parts code

Price

rank

Parts name

Effec-

tive

time

Inter-

change-

ability

Note

1 JX330 U.S.A

2

JX330/
M/P

3 All

<Interchange>

1. Interchangeable. 4. Not interchangeable.

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

3. C urre nt ty pe cann ot be used i n place of new ty pe.
New t y pe c a n be u sed in p la c e of c u rr en t ty p e.

Parts marked with “ ” is important for maintaining the safety of the set. Be sure to replace these parts with

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

Except

U.S.A

1 -503

4 -901

1 -503

5 -901

4 -196

5 -198

!

DUNTK7864XCZZ DUNTK7864XCZA VF

Control, and PS
PWB

DUNTK7868XCZZ DUNTK7868XCZA VF

VHI27020S081E VHI27020S081I GN ROM ’94/12 3

5. Interchangeable if replaced with same types of
relate d parts in use .

6. Others .

’94/9 4

8/8

2/8

(Supplementary Table 1)

Changes in the control and PS circuit boards (refer to the parts location diagram and the circuit diagrams for details.)

No. Change description

1 R178 has been discontinued. Discontinued VRS-TS2AD560J — 5-426

A jumper line (JP6) has been added between the No. 12 pin of IC42

2

and L37 (below).
A jumper line (JP7) has been added between the No. 11 pin of IC42

3

and L36 (left).
A jumper line (JP8) has been added between the No. 10 pin and the

4

No. 13 pin of IC42.

5 Change in multiplier of R135 from 220Ω to 330Ω. Change VRS-TS2AD221J VRS-TS2AD331J 5-387

A resistor (560Ω) has been added between the No. 1 pin of IC25 and

6

the No. 28 pin of IC24.

7 The capacity of C115 has been changed from 47pF to 0.1µF. Changed VCCCTV1HH470J VCKYTV1EF1042 5-145
8 C131 has been discontinued. Discontinued No description on P/G — 5­9 R176 has been discontinued. Discontinued VRS-TS2AD221J — 5-424

A jumper line (JP4) has been added between the No. 2 pin and the

10

No. 7 pin of IC42.

11 The capacity of C70 has been changed from 120 pF to 82 pF. Changed VCCCTV1HH470J VCCCTV1HH820J 5-101

The capacity of C79 has been changed from 82 pF to 56 pF.

12

A resistor (330Ω) has been added between the No. 12 pin of IC32

13

and the No. 23 pin of IC26.
A resistor (330Ω) has been added between the No. 10 pin of IC32

14

and the No. 23 pin of IC26.

15 The capacity of C116 has been changed from 47 pF to 120 pF. Changed VCCCTV1HH470J VCCCTV1HH121J 5-146
16 A diode (EK04) has been added between VCC and C128+. Added — VHDEK04////-1 5­17 A line has negative cut at the No. 38 pin of CN9 and CN10. Negative cut — — 5-

A fuse (ICPN25) has been added to the No. 31 cut section.

18

A jumper line (JP5) has been added between the No. 103 pin

19

(through-hole) of GA1 and the No. 5 pin of IC42.
A capacitor (100 pF) has been added between the No. 102 pin

20

(through-hole) of GA1 and the No. 7 pin (GND) of IC42.

Type of
change

Added — — 5- JP6

Added — — 5- JP7

Added — — 5- JP8

Added — VRD-HT2EY561J 5-

Added — — 5- JP4

Changed VCCCTV1HH470J VCCCTV1HH560J 5-110

Added — VRD-HT2EY331J 5-

Added — VRD-HT2EY331J 5-

Added — VHVICPN25//-1 5­Added — — 5- From 1994 mid-October production. JP5

Added — VCKYPU1HB101K 5-

Old parts code New parts code P/G No. Effective time Notes

From 1994 mid-August production.

From 1994 mid-September production.

From 1994 mid-September production.

From 1994 mid-November production.