(

REV.-A

CHAPTER 1

GENERAL DESCRIPTION

1.1 FEATURES . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

1.2 SPECIFICATIONS . . . . . . . .

1.2.1 Hardware Specifications

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3

1.2.2 Firmware Specifications

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-9

1.5 DIP SWITCHES-AND JUMPER SETTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-18

1.5.1 DIP Switch Settings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-18

1.5.2 Jumper Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-19

1.5.3 Dip Switch Setting for IBM emulation mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-20

1.7 MAIN COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-26

1.7.1

C107 MAIN Board (Main Control Circuit Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-26

1.7.2

1.7.3

1.7.4

1.7.5

C062 PNL Board (Control Panel Circuit Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-27

C062 PSB/PSE Board (Power Supply Circuit Board) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-27

Printer Mechanism (M-5J1O) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-28

Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-28

(

LIST OF FIGURES

Figure 1-1.

Figure 1-2.

Figure 1-11.

Figure 1-12.

Figure 1-13.

Figure 1-14.

Figure 1-15.

Figure 1-16.

Exterior View of the LQ-570+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2

Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-3

LQ-570+ Component Layout . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-26

C107 MAIN Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-26

C062 PNL Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-27

C062 PSB/PSE Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-27

Model-5J10 Printer Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-28

Housing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-28

LIST OF TABLES

Table 1-1.

Table 1-2.

Table 1-3.

Table 1-4.

Table 1-6.

Table 1-6.

Table 1-7.

Table 1-8.

Table 1-9.

Table 1-10.

Table 1-12.

Table 1-13.

Table 1-14.

Table 1-15.

Table 1-16.

Table 1-17.

Table 1-18.

Interface Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1

Optional Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-2

Specifications for Cut Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5

Specifications for Cut Sheeta (Carbonless Duplicating Paper) . . . . . . . . . . . . . . . . . . . . . 1-5

Specifications for Continuous Sheets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5

I Envelopes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5

I Labels Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-5

I Printing (Text Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-1o

I Printing (Bit Image Mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11

Character Matrix and Character Size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-12

Settings for DIP Switch 1 (SWl)(ESC/P 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-18

Settings for DIP Switch 2 (SW2)(ESC/P 2) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-18

International Character Set Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-19

Page Length . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-19

Settings for DIP Switch 1 (SW1)(IBM Emulation Mode) . . . . . . . . . . . . . . . . . . . . . . . . .

1-20

Settings for DIP Switch 2 (SW2)(IBM Emulation Mode) . . . . . . . . . . . . . . . . . . . . . . . . . 1-20

Code Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1-20

.

1’

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REV.-A

1.1 FEATURES

The LQ-570+ is a small, light-weight, low-cost, printer with advanced paper handling that is upper corrmatible with the LQ-510/550 and compatible with the LQ-570/1070. The printets main features areas folbws:

6.

7.

8.

9.

1.

2.

3.

4.

5.

Use of ESC/P 2 control codes

Ability to print multi-point fonts

Ability to receive and print raster graphic images

Compatibility with the LCVSQ series available on the market

Printing speeds: 225 characters per second (cps) (draft, 10 characters per inch (cpi))

High speed drafl has not equiped

269 cps (draft, 12 cpi)

225 cps (draft, 10 cpi)

90 cps (LQ, 12 cpi)

75 cps (LQ, 10 cpi)

Optional interface card

Clear, easy-to-read printing with standard EPSON fonts

Multiple fonts resident in the printer

9 LQ fonts (Roman, Saris Serif, Courier, Prestige, Script, OCR-B, Script C, Orator, Orator-S)

1 draft font

Control panel switch selection of fonts, mndensed, and cut-sheet feeder (CSF) bin

Optional tractor unit that can make up push-pull tractor

Easy handling of cut sheets with the optional cut-sheet feeder

Continuous Paper

Three ways to ‘insert continuous paper (front/bottom/rear path)

Auto backout & auto loading (rear insertion)

Continuous paper can be used without removing CSF

Standard tractor unit can be attached in two position (pusWpull)

Cut Sheet

Two ways to insert cut sheets (front/top)

Auto loading

The LQ-570+ is equipped with the standard EPSON 8-bit parallel interface( Printing is not possible for the following baud rates: 1800, 200, 134.5, 110, 75 bps). Various interface options ensure mmpatibility with a wide variety of computers. Table 1-1 lists the interface options, Table 1-2 lists the optional units available for the LQ-570+, and

Figure 1-1 shows an exterior view of the LQ-570+.

Model

C82305

C82306

C82307

C82308

C8231O

C82311

I C82313

Table 1-1. Interface Options

Description

Serial l/F card(inch screw)

Serial l/F card(mm screw)

32KB intelligent serial l/F card(inch screw)

32KB intelligent serial l/F card(mm screw)

32KB intelligent pararell I/F card(inch screw)

32KB intelligent pararell l/F card(mm screw)

I 32KB IEEE-488 l/F card

NOTES : Refer to the “Optional Interface Technical Manual” for details.

I

1-1

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Model I

1

Table 1-2. Optional Units

Description

C806371(EAI ver.) I Single-bin cut sheet feeder(80-column)

C806372(others) I Single-bin cut sheet feeder(80-column)

C806381(EAI ver.) I High-capacity cut sheet feeder(80-column)

C806382(others) I High-capacity cut sheet feeder(80-column)

C800191(EAI ver.) I Tractor unit(80~lumn)

C800192(others) I T r a c t o r unit(80adumn)

7753 I Fabric ribbon cartridge(80-column)

7768 I Fabric ribbon cattridae(80-column)

6

Figure 1-1. Exterior View of the LQ-570+

1-2

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~- 1.2 SPECIFICATIONS

This section provides specifications for the LQ-570+ printer.

1.2.1 Hardware Specifications

Printing method

Pin mnfiguration

Serial, impact, dot matrix

24 wires (12x 2 staggered, diameter 0.2 mm)

Wires 1

Wires 2

~;

It

/+

I i

I

I

I

I

I

I

1

Feeding methods

Line spacing

Paper insertion

Paper-feed speed

Friction feed (front/top)

Push tractor feed (rear)

Pull tractor feed (fronthttom)

Push-pull tractor feed (with optional tractor) (rear)

1/6 inch, 1/8, or programmable in units of 1/360 inch

Friction feed -Front or rear side

Tractor feed -Front, bottom, or rear side

Friction without CSF -2.0 msec/O.141mm(continuous)

Friition with CSF --

60.Oms/4.23mm(continuous 2.81PS)

65.2ms/4.23mm(intewal 2.81PS)

2.20mst0.141 mm(continmus)

66.7rns/4.23mm(mntinuous 2.51PS)

Tractor --

73.1 ms/4.23mm(intewal 2.51PS)

2. Oms/O.141 mm(continuous normal mode)

60.Orns/4.23mm(continuous normal mode 2.81PS)

65.2ms/4.23mm(intetval normal mode 2.81PS)

2.5ms/O.141 mm(copy mode)

75.Oma/4.23mm(copy mode 2.21PS)

80.6ms/4.23mm(copy mode 2.21PS)

NOTE: The points below provide precautions for paper handling.

1. Friction feed(release lever in FRICTION POSITION).

. Paper must be loaded from the front or top entrance.

c Do not use continuous paper.

s Do not perform any reverse paper feeds within the top 8.5 mm(.34in.),bottom 22 mm(.87in.)

(top entrance), or bottom 40.2mm(l .6in.)cfront entrance) area.

c Do not perform any reverse feeds greater than 1/6 inch after a paper end has been detected.

1-3

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Width

Length

Thickness

Weight

Quality

Table 1-3. Specifications for Cut Sheets

148 mm to 257 mm (5.8 in. to 10.1 in.) (top insertion)

182 mm to 257 mm (7.2 in. to 10.1 in.) (front insertion)

364 mm (14.3 in.), maximum

0.065 mm to 0.14 mm (0.0025 in. to 0.0055 in.)

14 lb to 24 lb (52.3 g/m’*2 to 90 g/m**2) plain paper or recycled paper(under normal temperature)

Table 1-4. Specifications for Cut Sheets (Carbonless Duplicating Paper)

Width

Length

Thickness

Weight

Quality

Copies

182 mm to 216 mm (7.2 in. to 8.5 in.)

257 mm to 297 mm (10.7 in. to 11.7 in.)

0.12 mm to 0.32 mm (0.0047 in. to 0.012 in.)

12 lb to 15 lb (40 g/m**2 to 58 g/m**2)

Carbonless duplicating paper

4 sheets (1 original and 3 copies)

Width

Copies

Quality

Thickness

Weight

Size

Copies

Thickness

Weight

Quality

Table 1-5. Specifications for Continuous Sheets

101 mm to 254 mm (4.0 in. to 10.0 in.)

4 sheets (1 original and 3 copies) plain or carbonless multi-part paper recycled paper(under normal temperature)

0.065 mm to 0.10 mm (0.0025 in. to 0.0039 in.) - single sheet

0.065 mm to 0.32 mm (0.0025 in. to 0.012 in.) - total

14 lb to 22 lb (52.3 g/m**2 to 82 g/m**2) - single sheet

12 lb to 15 lb (40 g/m**2 to 58 g/m**2) - each

Table 1-6. EnveloDes

No. 6 166 mm x 92 mm

No. 10 240 mm x 104 mm

Not available

0.16 mm to 0.52 mm (0.0063 in. to 0.0197 in.)

Differences in thickness within the printing area must be less than

0.25 mm (0.0098 in.)

12 lb to 24 lb (45 g/m**2 to 91 g/m**2)

Bond paper, plain paper, airmail

NOTES

: a. Printinci on envelopes is available only at normal temperatures and only using top insertion.

b. Keep tie longer side of the envelope-horizontal during insertion.

c. Place the left edge of a No. 6 envelope at the sheet guide setting mark.

Label size

Copies

Thickness

Table 1-7. Labels Specifications

2 1/2 in. x 15/16 in.

4 in. x 15/16 in.

4 in. x 17/16 in.

Not available

0.07 mm to 0.09 mm (0.0028 in. to 0.0031 in.) - base paper

0.16 mm to 0.19 mm (0.0063 in. to 0.0075 in.) - total

NOTES: a. Printing on labels is available only at normal temperatures.

b. Labels must be of the fanfold type.

c. Labels with pressure sensitive paper must be pasted along the perforation and tractor holes and the total thickness must be less than or equal to 0.3 mm (0.0118 in.). Labels can be printed out only if the temperature is between 5 and 36 degrees C (41 and 95 degrees F) and humidity is between

10 O/. and 80 YO RH.

d. Recommendation AVERY CONTINUOUS FORM LABELS

AVERY MINI-LINE MBELS f. Labels must be used with the pull tractor unit (front or button) g. Do not perform reverse feeds.

1-5

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220240 V version Rated voltage 220 to 240 VAC

Input voltage range 198 to 264 VAC

Rated frequency

Input frequency

Rated current

50 to 60 Hz

49.5 to 60.5 Hz

1.0 A

Power consumption Approx. 33W(during a self-test in draft mode,10 cpi)

Insulation resistance 10 megohms, minimum(at 500 VDC between AC Iines and chassis).

Dielectric strength 1250VAC rms 1 minute or 1500VAC rrns 1 second(between AC line and chassis)

Environmental Temperature range 5 to 35 degrees C (41 to 95 degrees F) -- operting

-30 to 60 degrees C (-22 to 140 degrees F) -- in shipment container

Humidity 10 to 80% RH - operating

5 to 857.

RH -- storage

Resistance to shock IG, within IMS -operating

Resistance to

Vibration

2G, within lms - storge

0.25 G, 55 Hz,Msx. - operating

0.50 G, 55 Hz,Msx. -- storge

Physical specifications Weight

Dimensions

6.8 kg,approx(15 Ib.,approx.)

434mm(width) x 368mm(depth) x 160mm(height)

17.4 in.(width) x 14.7 in.(depth) x 6.3 in.(height)

1-8

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1.2.2 Firmware Specifications

Control code EPSON ESC/P 2( ESWPTM level 2: EPSON new control code for printers)

IBM emulation mode (European version only)”l

NOTE: ●

1 :The European version is equipped with the IBM emulation mode, Please refer to the emulation mode specification for details.

Printing direction

Input data buffer

Character code

Character tables

Bidirectional with logic seeking

8KB (when SW 1-7 is OFF)

OKB (when SW 1-7 is ON)

ESC( A nL nH data...

Print data as characters

Italic character table, PC 437, PC 850, PC 880, PC 883, PC 885, PC437*, PC851*

PC853*, PC852*, PC85~, PC889*, PC881*, BRACll~, Abicomp**

*:Available on the European version only

● *available on the other versions only

Fonts and pitches

Bit-map fonts.

Scalable fonts

Printing modes

EPSON Roman

EPSON Script C

OCR-B

10, 12, 15, proportional

EPSON Saris-serif 10, 12, 15, proportional

EPSON Courier 10, 12, 15

EPSON Prestige

EPSON Script

10, 12

10, 12 proportional

10

E P S O N O r a t o r 1 0

EPSON Orator-S 10

EPSON Draft 10, 12, 15

EPSON Roman 8 pt to 32 pt

EPSON Saris-serif 8 pt to 32 pt

Selection and mixture of the following modes are allowed, excluding 15 cpi condensed mode: o Print quality (draft/letter quality) o Character pitch (10, 12, 15, or proportional) o Condensed

O Double-width o Double-height o Emphasized o Double-strike o Italic o Underlined o Double-underlined o OverScore o Strike-through o Outline o Shadow

1-9

REV.-A

Character matrix

Character size

See tables 1-8 and 1-9.

See Table 1-8.

See Table 1-10.

See Table 1-10.

cpi:

Cps:

LQ:

10

12

15

Print Pitch on off

T

Table 1-8. Printing

I 80

I

137

Text Mode) m

10

Draft

225

LQ

17.1

192

75

128

90 12 269

154

off on

I

1120

20

15

225

337

Invalid

112 characters per inch characters per second letter quality

1-1o

REV.-A

8

8

8

8

8

8

24

24

24

24

24

Pins

Table 1-9. Printing (Bit Image Mode)

Bit Image Printing Mode Density

(dpi)

Printable Dots

Single-density

Dual-density

Double-speed, dual-density

Quadrupledensity

CRT graphics

60

120

120

240

80

480

960

960

1920

640

90 720 CRT graphics II

Single-density

Dual-density

CRT graphios II

Tripledens”~

Hexdensity

60

120

90

180

360

480

960

720

1440

2880

15.0

22.5

11.2

15.0

7.5

7.5

Printing Speed

(ips)

22.5

11.2

22.5

11.2

11.2

dpi: dots per inch ips: inches per second

,

1-11

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REV.-A

Table 1-10. Character Matrix and Character Size

Printing Mode Face Matrix HDD Character S&e Unit ESC sp

Draft, 10 pitch 9 x 22 120 1.9 x 3.1

120

Draft, 12 pitch

Draft, 15 pitch

Draft, 10 pitch, mndensed

Draft, 12 pitch, oondensed

LQ, 10 pitch

LQ, 12 pitch

LQ, 15 pitch

LQ, 10 pitch, condensed

LQ, 12 pitch, condensed

LQ, proportional

LQ, proportional, mndensed

LQ, proportional, super/subscript

LQ, pmpottional, super/subscript, mndensed

9 x 2 2

7 X 16

------

------

31 x 22

27X 22

22

X

16

- - - -

120

120

240

240

360

1.9 x 3.1

1.0

X

2.3

-------

. . . . . . .

2.2 x 3.1

360

360

1.9 x 3.1

1.6

X

2.3

360 -——

— - 360 “—

Max. 37X

22 360

2.6 X 3.1

Min. 18x 22

360

1.0 x 3.1

. . . . .

------

360 ..-.-.

360 ---—

Max. 28X 16

Min. 12x 16

-----

------

360 1.8

X 2.3

360 0.7 X 2.3

360

. . . . . . .

360

...--.

120

120

120

120

180

180

180

180

180

180

180

180

180

NOTES: *

*

*

●

HDD is horizontal dot density in dots per inch.

Face matrii and character size indicate the size of the maximum character. This value is dependent on paper, ribbon, etc.

Unit ESC sp (which also can be sent as unit, followed by the character string CHR$(&h20)), indicates the minimum length to be added to the right of the character speoified with the ESC sp control code.

u

----’ indicates that the character matrix is reshaped by printer firmware. Character w“dth becomes half of the noncondensed character width.

1-12

REV.-A

~-

1.5 DIP SWITCHES AND JUMPER SETTING

This section describes the DIP switch selections and jumper setting for the LQ-570+ printer.

1.5.1 DIP Switch Setting for ESC/P 2 mode

This printer is”equipped with two banks of DIP-SWITCHES and they are located on the control panel. The tablel -12 through 1-15 shows the available function settings of two DIP switches. (Note that the status of the DIP switches is only read at power on or upon receipt of the /lNIT signal.)

No.

Table 1-12. Settinas for DIP Switch 1 EW1)

Description ON OFF

1

2 International character set and PC table selection

See the table 1-14

Factory

Setting

ON

ON

5

6

3

4

7

8

Character table selection

Graphic print direction

Comand Ianguage’1

Inmd buffer l-inch skip perforations

GraDhic

Unidir.

IBM

OKB

ON

OFF

I

Italic OFF

Bidir.

OFF

ESC/P2

8KB

OFF

OFF

OFF

OFF

NOTE: : *1 is European version only. The switch of 1-6 is invalid for another versions.

No.

Table 1-13. Settings for DIP Switch 2 (SW2)

Description

3

4

1

2

Page length of continuous paper

Auto tear-off

Auto LF

ON

See Table 1-15 below.

ON

ON

OFF

OFF

OFF

Factory

Setting

OFF

OFF

OFF

OFF

1-18

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REV.-A

Character *t ~ktion

Table

1-1 1-2

ON ON

ON

ON

ON

OFF

ON OFF

OFF ON

OFF ON

OFF OFF

OFF OFF

ON

OFF

ON

OFF

ON

OFF

ON

OFF

1-3 Country Europe Others

Us.

France

Germany

U.K.

Denmark 1

Sweden

Italy

Spain 1

I

1

437

850

860

863

665

437Greek

653

852

I

1

+

+

+

+

B~-SCll

Ab.komp

437

I

I I

-— When SW 1-4 is ON.

I

I i

- - - - . . . . . . - - . . — . - When SW 1-4 is Off.

NOTE:

● is not available on the European version(P0437 is selected).

)

I

Table 1-15. Page Length

1 1

2-1 I 2-2

,

! Page Length .m

1.5.2 Jumper Setting

Jumper 12 : Connect it to the “SLIN” to use the “SELECT IN” signal fmm host oomputer.

1-19

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1.5.2 DIP Switch Setting for IBM emulation mode

In the IBM emulation mode, with the DIP awitch 1-6 to ON, some other awitches are recognized by the printer in different meanings from the ESC/P 2 mode.

Please refer to the emulation mode specif.=tion for details.

No.

Table 1-16. Setting for DIP Switch 1

Description u

I

I 2 I

Code page selection

I

I

3

4 Character set selection

1

I

5 Graphic print direction

6 Comand language

1

I

7 Input data buffer size

I 8 I AGM(Alternate Grafic Mode)

!

!

!

!

!

I

ON OFF Factory

Setting

I

I

See the table 1-14 k

I

ON set 2

Unidir.

IBM oKB

!

i

!

t

,

Setl

Bidir.

ESCIP2

8KB

I

!

!

!

!

OFF

OFF

OFF

OFF

OFF

I ON I OFF i OFF

3

4

1

2

No.

Table 1-17. Settinas for DIP Switch 2 (SW2)

Description ON OFF Factory

Setting

Page length of continuous from

Auto-CR

Auto tear-off

Auto LF

12 inch 11 inch valid invalid

ON

ON

OFF

OFF

OFF

OFF

OFF

OFF

1-1 1-2 T

ON ON

ON ON

ON

ON

OFF

OFF

OFF ON

O F F O N

O F F O F F

O F F O F F

Table 1-18. Code page Selection

1-3

ON

OFF

ON

OFF

ON

OFF

ON

OFF

Code page

437

850

660

663

665

437Greek

653

652

1-20

(-

REV.-A

1.6.11 Printer Protection for Heavy-Duty Printing

This printer has a printhead protection function to prevent it from overheating and to handle the printer when the head driver voltage drops. If head temperature exceeds its maximum value, printing stops automatically until the head temperature drops to a certain value before printing resumes. Printing resumes at a lower print speed at first.

However, as the head temperature decreases, print speed increases to normal speed automatically. If the head temperature continues to increase at the lower speed, printing is stopped or resumed as temperature increases or decreases.

If the voltage supplied to the head drive circuit drops below its minimum limit as a result of heavy-duty printing, printing is interrupted immediately. When the power supply voltage recovers to a certain level, the remaining print line is printed at hatf speed. This protective action occurs when half or more of the wires are activated mntinuously.

1-25

REV.-A

1.7 MAIN COMPONENTS

The main mmponents of the LQ-570+ printer are designed for easy removal and replacement at maintenance and repair of the printer. The main composed of this printer are:

1) C107 MAIN board:

2) C062 PNL board: the main control board; the CPU on this board controls all main functions.

the control panel bowd.

3) C062 PSWPSE board: the power supply board.

4) M-5J1O: the printer mechanism.

Figure 1-11. LQ-570+ Component Layout

1.7.1 C107 MAIN Board (Main Control Circuit Board)

This consists of a TMP90C041N 6-bit CPU, an E05A50 gate array, a PROM (512K), a mask ROM (character generator, 2M), Head Gate Array, an EEPROM, a CR Driver, a PF Driver and Head Drivers.

STK6712(!C1O)

E05A50(IC11)

\ \

CPU TMP90C041(IC21)

I

“ MASKROM(IC17)

PROM(IC1 4)-

,

I w1

Eo5A6k(lc2)

I

Figure 1-12. C107 MAIN Board

1-26 o

-UJ o

(

REV.-A

1.7.2 C062 PNL Board (Control Panel Circuit Board)

The C062 PNL board is the LQ-570+ control panel, which includes the indicator LEDs, switches, and DIP switches.

Figure 1-13. (X62 PNL Board

1.7.3 C062 PSB/PSE Board (Power Supply Circuit Board)

The power supply unit consists of a switching regulator circuit, which mnverts the AC line vottage to the DC voltages

(for example, +35V and +5V) used by the printer. The C062 PSB board is 120V input type, and the C062 PSE board is 220/240V input type.

Figure 1-14. C062 PSB/PSE Board

1-27

~

REV.-A

1.7.4 Printer Meohanism (M-5J1O)

The M-5J1o printer mechanism was developed specifically for use with LQ-570+ printer. The components inciude a carriige motor, carriage mechanism, paper-feed motor, paper-feed mechanism, ribbon-feed mechanism, printhead, and sensors. This printer mechanism ailows three ways of paper insertion.

/“

,

Figure 1-15. Modei-6J10 Printer Mechanism

1.7.5 Housing

The LQ-570+ housing consists of the upper, lower, and front cases. The front case houses the contmi panel board.

The lower case holds the printer mechanism, the main controi circuit board, and power supply circuit board.

v

Figure 1-16. Housing

1-28

i,,

1 i ’

CHAPTER 2

OPERATION PRINCIPLES

2.1 OVERVIEW OF PRINTER MECHANISM OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . 2-1

2.1.1 Printhead Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1

2.3 CONTROL CIRCUIT OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-13

2.3.1

Control Cirouit Operation Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-13

2.3.2

2.3.3

2.3.4

2.3.5

2.3.6

Reset Cirouit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-15

Sensor Cirouits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-16

MOTOR, CR Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-17

MOTOR, PF Drive Cirouit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-18

Printhead Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-19

LIST OF FIGURES

Figure 2-1. How the Printhead Works . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-1

Figure 2-17. Control Circuit Blook Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-13

Figure 2-18. Data Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-14

Figure 2-19. Reset Circuit Blook Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-15

Figure 2-20. /RESET Signal Timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-16

Figure 2-21.

Sensor Ci&dt Block-Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-16

Figure 2-22.

Figure 2-23.

Figure 2-24.

MOTOR, CR Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-17

MOTOR, PF Drive Circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-18

Printhaad Drive Cirouit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-19

LIST OF TABLES

Table 2-5.

Table 2-6.

Funotions of the Main IC and Circuits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-14

MOTOR, CR Drive Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-17

2-i

{

(

REV.-A

2.1 OVERVIEW OF PRINTER MECHANISM OPERATION

This section describes the printer mechanism of the Model-5J10 printer unit and explains how the printer works.

Model-5J10 has a printer mechanism that features a 24-pin impa~ dot printhead for serial printing. There are four main parts to the printer mechanism: 1) the printhead mechanism, 2) the carriage movement mechanism, 3) the paper advance mechanism, and 4) the ribbon advance mechanism. Each of these is described below.

2.1.1 Printhead Mechanism

The printhead mechanism consists of the printhead itself, the ink ribbon, and the platen. The printhead mntains 24 wires in a zigzag arrangement in two rows of 12. A drive coil is provided for each of these wires to make the wires move in and out of the printhead and print dots independently of each other. The basic way that the wires are driven is described in the four steps below.

1.

2.

3.

4.

The control circuit outputs the drive signal to the printhead drive circuit. This changes the printhead drive voltage, and current flows through the corresponding pnnthead coil. The coil acts as a solenoid and generates a magnetic force.

This induced force causes the plate to approach the coil md and the associated dot wire is rapidly ejected to impact on the platen.

The dot wire presses the ink ribbon up against the paper as it hits the platen, and in this way prints a dot on the paper.

As soon as the current through the coil is switched off, the force induced in the mil rod stops. The plate then returns to its original position-(its position before the coil was energized) through the action “of the p~te spring.

After the dot wire hits the platen, the rebounding force of hitting the platen works together with the wire return spring to pull the wire back to its original position in relation to the plate.

Wtm Reaetti~g Spring

Oot Wire

Stopper

\

\

\

RIBBON MASK

/

/

PLATEN

/

/

Ribbon

/

Pa&r

Act&ing Plate Spring

+

Figure 2-1. How the Printhead Works

Figure 2-1 shows the action of the printer mechanism when a single dot is printed.

The printhead tends to heat up aftera period of mntinuous printing. To minimize the possibility of the dot wire drive coils overheating within the printhead and any loss of performance, the head is equipped with a thermistor that detects the head temperature. When this thermistor detects changes intheprinthead temperature, thevoltagesignal changes. This signal change is read by the control circuit for feedback mntrol.

2-1

( f

REV.-A

2.3 CONTROL CIRCUIT OPERATION

The control circuit consists of two boards: the C107 MAIN board, which acts as the main board, and the C062 PNL board, which acts as the control panel board. This section describes how these boards work.

2.3.1 Control Circuit Operation Ovewiew

The printer CPU is an 8-bit CPU TMP90C041 running at 10 MHz. It oversees control of all the components of the printer. The E05A50 gate array contains various memory management ftinctions that control the assignment of the memoty and l/O areas, and it controls a head gate array IC2

(E05A86), a PU1501 or STK-67129 for the PF and CR motor driver, STA475A(IC4 - IC9) is transistor array for the head pins drive, several sensor circuits and so on.

Figure 2-17 shows the block diagram of the C107 Main Board.

C062PNL Board

Card Panel

-.. -.. —.. —..

I C107MAIN Board

-1----”:”--------—— . . . . . . . . . . . . . . . . . .

. . . . . . . . . .,

: Opdon I/F } . .

. . . . . . . . . . .

GateArray

E05A50

(Icll)

PROM P:5s psM~M MROM MROM

512K

(IC14) (IC15) (IC16) (I%) (lfi8)

Vref Circuit

I I I

I

I

I i a

CPU TMP90C041 (IC21)

1 I

STK-6712(IC1O)

L-

+

CR Motor

%F

I

PFMotor

L’

E05A66 (IC2)

STA47SA (IWIC9)

I

1

+ v

DETECTOR ASSY., D~~OR

HP v

DmcroR ASSY.,

ASSY.,PE,REAR RELEASE

Prfnthaad

:- ” - ” - - - :

; 1+~

‘~.

“. . . . . . . . .

DETECTOR D151ECTOR ASSY.,

ASSY.,PE,FRONT PLATEN

Head

Thermiater

Sanaor

CR Motor

PF Motor

DETECTOR ASSY.,PE,FRONT

DETECTOR ASSY.,PE,REAR

DETECTOR ASSY.,HP

DETECTOR ASSY.,PLATEN

DETECTOR ASSY.,RELEASE

TH2

: Carriage Motor

: Paper Feed Motor

: Paper End Sensor(Front)

: Paper End Sensor(Rear)

: Home Position Sensor

: Platen Gap Sensor

: Release Lever Position Sensor

: Therrnister Sensor

Figure 2-17. Control Circuit Block Diagram

2-13

‘)

REV.-A

Table 2-5 lists the functions of the main components and circuits of the printer. The CPU converts the print data sent from the host mmputer to image data (the print image). The image data is then loaded to RAM. Each line of data is processed sequentially. The CPU transfera the print data to the printhead drive circuit. The CPU sends the printhead drive pulse to the printhead drive circuit. The length of this pulse corresponds to the printhead drive voltage. The head drive circuit then outputs the head drive signal.

CPU(IC21)

Print Data

C6nvertor

I

Image Data

Transfer

RAM

Input

Buffer

- - - - - -

Image

Buffer

G/A E05A86

(IC2) m

Date Latch and

Delay control

‘=-’”)

Printhrad

‘}

‘)

Figure 2-18. Data Flow

IC or Circuit

TMP90C041

E05A50

Table 2-5. Functions of the Main IC and Circuits

Location Functions

IC21

Icll

Receives data from the host computer and loads the data to the input buffer in

RAM (under interrupt processing control). Expands the input data held in the buffer to create image data. Loads this image data to the image buffer in RAM.

Transfers the image data to the printhead drive circuit. It also controls various pwts of the printer mechanism, such as the motors.

This is a gate array consisting of three components mnfigurd on a single chip:

Memory Management Unit

Handles CPU memory in ROM, RAM, and mask ROM, and assigns addresses for other devices.

Parallel Interface (Parallel I/F)

Holds the parallel interface functions.

Reset Circuit

Contains the circuit that generates the /RESET signal.

2-14

REV.-A

IC or Circuit

PROM

RAM

MROM

(Mask ROM)

EEPROM

HEAD GATE

ARRAY

Vref Circuit

IC15

IC16

IC17

IC18

IC12

Table 2-5. Functions of the Main IC and Circuits (Cont.)

Location Functions

IC14 PROM contains the program that runs the CPU.

Holds the CPU working area and the various buffers. (1E is not used for an 80column device and is not installed.)

Holds the character design (also called the character generator).

IC2

. . .

EEPROM is an electronically writable and erasable ROM used to hold such information as the TOF position.

This is a gate array mnsisting of three components configured on a single chip: s Change order of the Head pulse outputs

Mode 1: HD1+HD2+HD3+......+HD22+HD23+HD24

Mode 2: HD24+HD23+HD22+...... +HD3+HD2+HD1

●

Delay control(for low noise)

●

Image data latching

This is a circuit for generating the reference voltage used in the A/D mnvertor within the CPU.

2.3.2 Reset Circuit

Figure 2-19 shows the reset circuit block diagram. The reset circuit issues the /RESET signal. Each part of the control cimuits is initialized when this /RESET signal is received. The renditions when the

/RESET signal is output are described below.

When Turning on the Power Supply

Immediately after the power has been turned on, PST 529 (IC19) outputs the /PON pulse. E05A50

(IC1l) receives this pulse and then outputs the /DISC pulse. The electrical charge in the capacitor(C29) is then discharged. After this, The /THLD port within E05A50 detects the low level and then outputs the /RESET signal from the /OUT port of IC19. After a certain time has elapsed, the charge in the condenser builds up again. The M-ILD signal is canceled and then the /RESET signal is canceled.

Resets performed by the CPU itself (CPU self-reset)

The CPU outputs the /RESET signal if there is a /RESET request for E05A50 and E05A50 output the

/DISC pulse. ”

+5

IOUT

E05A50(IC11)

$ R30 a,

107

/PON

/THLD

ZC”fi IDISC

I I

I

1C2’1

~z,

-rl-

7+7+

R32”

Figure 2-19. Reset Circuit Block Diagram

2-15

REV.-A

Power On t

CpU Self Reset

4

+6 V Line

VCCOM

I

I u

THLD

??EStt

Figure 2-20. /F?ESET Signal Timing

2.3.3 Sensor Circuits

Figure 2-21 shows thesensorcircuits block diagram. Detection of any excessive printheadtemperature causes the TEMP2 signal to be sent directly to the CPU. Other signals, such as the CRHOME signal, pass through the each low path filters before reaching the CPU. Terminals P50 to P55 on the CPU are used for the ND mnvertor. The Vref circuit generates the A/D mnverior reference voltage Vref.

)

Printhead

,: Sensor Circuit

,,

‘‘1 ‘

6.2K

k

4

+5 dvk

I

I T M P 2 1-

I

, t

‘:

L

LEVER

D

GAP

:

‘E-1

D

:

4

D

P50

P31

P34

P52

P53

P54

VREF

P51

LEVER

GAP

PE-1

PE-2

CRHOME,

%’

:

1 0 . 0 2 2 ;

T

3

777-;

- - - . - - - - - - - - - - - - - - - - - - - - - - --1

Vref Circuit r

Head Drive Voltage

(+35V) monitor Circuit

CPU(IC21

Figure 2-21. Sensor Circuit Block Diagram

2-16

REV.-A

2.3.4 MOTOR, CR Drive Circuit

Figure 2-22 shows the MOTOR, CR driie circuit. An open-loop, constant-current drive control is used to drive the MOTOR, CR. The motor is driven by 2-2 phase excitation and 1-2 phase excitation. 2-2 phase excitation corresponds to two 1-2 phase excitation steps. Thus, for each single step phase change of a 2-2 phase excitation motor, the carriage moves 1/120 inch. For each single step phase change of a 1-2 phase excitation motor, the carriage moves 1/240 inch.

The MOTOR, CR driie circuit of the STK-67128 detects the amount of current flow in the MOTOR, CR coil and regulates it. The current flowing through the coil varies depending on the speed of the

MOTOR, CR.

The amount of current is set by the CPU via the E05A50 l/O port. Signals are sent to Vrefl or Vref2 on the STK-67128. The STK-67128 sets the coil current to mnespond to the MOTOR, CR speed.

Ports P60 to P63 on the CPU are used exclusively as phase control potts for the stepping motor.

-. ---- -- . .

(IC21)

P60

P61

P62

P63 -

E05A50

-1=3

Current

Control

Circuit k

STK-6712

MOTOR,CR

I

Al

BI

IAI %l=s-=~~:;

/B1

/Ad

IB4 :

VREFA

.--..--.---.-

VREFB

)

Drive Mode

3 x speed

2 x speed

1.5 x speed

4/3 x speed

1 x speed

3/4 x speed

2/3 x speed

1

1/2 x speed

Figure 2-22. MOTOR, CR Drive Circuit

Tshla 7-I% MOTOR. CR Driva Mnchs

Extension Type Type Drive Frequency

2-2 phase

2-2 phase

2-2 phase

1-2 phase

1-2 phase

1-2 phase

1-2 phase

1-2 phase

2695

PPS

1773 pps

1347 pps

1191 pps

1796 P@

1347 pps

1190 pps

898 PPS

LQ

Standard Print Character

Draft

High Speed LQ

Draft(Emphasis, Condensed)

2-17

“)

REV.-A

2.3.5 MOTOR, PF Drive Circuit

The printer uses a stepping motor to advance the paper. The paper can be advanced for minimum of

1/380 inch. The nmtor is a 2-2 phase or 1-2 phase, constant-voltage drive type. P70 to P73 on the

CPU are the phase oontml ports forthe stepping motor. MOTOR, PF phase data output through these ports. Cl to C4 are turned on and off within the PU1501(IC3) acoording to the phase data sent from the CPU.

When the paper advanoe motor is running, the supply voltage to the mil of the MOTOR,PF is +35 V.

When the paper advance motor is not running and is in hold state, the supply voltage to the coil is +5

V. Switching between these two supply voltages oocursat the CPterminal of the PU1501(IC3) when the switch is turned on or off.

‘)

TMP90C041

(IC21)

P70

P71

P72

P73

Data

Bus

E05A50

(Icll)

P3

B1

B2

03

04

(IC3) c l

C2

C3

C4 ‘

:

:

:

PFA

PF-A :

➤

PFB

PF-B :

BP

CP r

A , d b

Figure 2-23. MOTOR, PF Drive Circuit

2-18

‘\

REV.-A

2.3.6 Printhead Drive Circuit

Figure 2-24 shows the printhead drive circuit block diagram. The print data already is expanded to create the image data. The CPU splits up this data three times and transfers this information to the latch circuit within the Head Gate Array(lC2). The CPU samples the voltage of the +35 V line via the

A/D convertor (see Section 2.3.3). The CPU outputs a pulse via the CPU time output pori P63. The length of this pulse corresponds to the voftage of the +35 V line. This pulse becomes the head drive signal. In this way, Head Gate Array(iC2) outputs head drive signals (signals HD1 to HD24) that relate to voltage level through the width of the pulses. These signals are output to the head for each of the section of print data that were created by subdividing the data three times before sending.

By sampling the +35 V line voltage and determining the length of the head drive signal, it is possible to maintain the energy supplied to the head at a mnstant level. If the voltage of the +35 V line is .

HIGH, the CPU shortens the output pulse. If the voftage of the +35 V line is LOW, the CPU lengthen the output pulse.

TMP90C041

(IC21)

DO -D7

E05A86

(IC2)

DO -D7

E05A50(IC11)

‘“npp ‘Pp”rrs

HD1 -24

STA475

(IC4-9)

Printhead

Figure 2-24. Printhead Drive Circuit

2-19

)

‘)

REV.-A

CHAPTER 3

DISASSEMBLY AND ASSEMBLY

3.2.1 Changing the Printhead . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-5

3.2.3 Removing the Eleotrkal Cirouitty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-7

3.2.3.1 Removing the BOARD ASSY.,MAIN (C107 MAIN Board) . . . . . . . . . . . . . . . . .

3-7

3.2.3Q Removing the BOARD ASSY.,POWER SUPPLY (C062 PSWPSE Boami) . . . . .

3-3

3.2.3.3 Removing the BOARD ASSY.,PANEL (C062 PNL Board) . . . . . . . . . . . . . . . . . 3-3

LIST OF FIGURES

Figure 3-2. Removing the Printer Cover and the Paper Eject Cover . . . . . . . . . . . . . . . . . 345

Figure 3-3. Removing the Printhead 3-s

Figure 3-6. Removing the Shield Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-7

Figure 3-7. Removing the BOARD ASSY.,MAIN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-7

Figure 3-S. Removing the BOARD ASSY.,POWER SUPPLY . . . . . . . . . . . . . . . . . . . . . . . . 3-3

Figure 3-9. Removing the BOARD ASSY.,PANEL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3-s

3-i

REV.-A

3.2.1 Removing the Circuit Boards

1.

2.

Remove

Remove the the

FRAME ASSY.,SHEET GUIDE.

COVER ASSY.,EJECT.

COVERASSY.,EJECT

ASSY.,SHE= GUIDE

Figure 3-2. Removing the FRAME ASSY., ;HEET GUIDE and the COVER ASSY., EJECT

3.

4.

Release the two levers that hold the printhead to the oarriage, and remove the printhead.

Remove the two FFCS (CABLE, HEAD, FRONT(,REAR)) from the printhead.

prifIthead

Figure 3-3. Remove the Printhead

3-5

)

REV.-A

3.2.3 Removing the Circuit Boards

This section describes how to remove the BOARD ASSY.,MAIN (C107 MAIN board), the BOARD

ASSY.,POWER SUPPLY (C062 PSB/PSE board) and the BOARD ASSY.,PANEL (C062 PNL board).

3.2.3.1 Removing the BOARD ASSY.,MAIN (C107 MAIN Board)

1.

2.

3.

4.

Remove the HOUSING ASSY.,UPPER (see Section 3.2.2.2).

Remove the CB (M3 X 6) screw that hold the HOLDING PLATE,FFC to the SHIELD PLATE,MAIN

BOARD, and remove it.

Disoonneot the FFC(CABLE,HEAD, FRONT(REAR)) removing the oables for the CN6 and CN7 mnneotors on the BOARD ASSY.,MAIN.

Remove three CBB (C) (M3 X 10) sorews that hold the SHIELD PLATE,MAIN

BOARD to the BOARD ASSY.,MAIN, and remove it.

CBB(C) (M4x 14) Screw

[ cCB (M3X6) Screw

SHIELD PLATE, RIGHT> C!

CBB (M4X 10) Screw -

lliE%&2-

~ MAIN BOARD

/

BOARD ASSY., MAIN CBB(C) (M3X 10) Screws

Figure 3-6. Removing the Shield Plate, MAIN BOARD

5.

Remove the CBB (M4 X 10) sorew that hold the SHIELD PLATE, RIGHT to the BOARD

ASSY.,MAIN. Remove the CBB(C)(M4 X 14) screws that hold it to the

HOUSING ASSY.,LOWER. Remove the SHIELD PLATE, RIGHT.

6.

) 7.

Remove the cables from the following connectors on the main board: CN3 (brown 12-pin), CN4

(white 5-pin), CN5 (white 6-pin), CN8 (yellow 2-pin), CN9 (black 2-pin), CN1O (blue 2-pin),CN11

(white 2-pin) and CN12 (red 2-pin).

Remove three CBB(C) (M3 X 10) screws and CB A-IAMITITE (M3 X 8) sorew that hold the h board to the lower ~sej Remove the main board.

CAUTION

Be oareful with a color of the harness cable when you connect them to the mnnector CN1l and

CN12 of the Main board. The connect connection should be as below.

Hamess(BLACK)+CNl 1(WHITE)

Hamess(GRAY)+CN12(WHlTE)

3-7

REV.-A

CBB(C) (M3X 10) Screws

CB (M3X8)’Screw BOARD ASSY., MAIN

Figure 3-7. BOARD ASSY.,MAIN

Adjustment Required

When replacing the BOARD ASSY.,MAIN, you must adjust the bidirectional print position again to ensure bidirectional printing is mrrectly aligned

<Bidirectional Print position adjustment(See section 4.2)>

3.2.3,2 Removing the BOARD ASSY.,POWER SUPPLY (C082 PSB/PSE Board)

1.

2.

3.

4.

Remove the HOUSING ASSY.,UPPER (see Section 3.2.2.2).

Remove the cable from the connector CN13 of the BOARD ASSY.,MAIN.

Remove the cable for connector CN1 of the BOARD ASSY.,POWER SUPPLY.

Remove five CBB(C) (M3 X 10) screws and the CB (M3 X 8) screw that hold the BOARD

ASSY.,POWER SUPPLY to the HOUSING ASSY.,LOWER. Remove the BOARD ASSY.,

POWER SUPPLY.

BOARO ASSY., POWER SUPPLY (C062 PSB/PSE

60sd)

)

CBS(C) (M3 X 10) Screws

Figure 3-B. Removing the BOARD ASSY.,POWER SUPPLY

3.2.3.3 Removing the BOARD ASSY.,PANEL(C082 PNL Board)

1. Remove the HOUSING, FRONT (see Section 3.2.2.1).

2. Remove five CBB(C) (M3 X 10) screws that hold the BOARD ASSY.,PANEL to the

HOUSING, FRONT. Remove the BOARD ASSY.,PANEL.

Figure 3-9. Removing the BOARD ASSY.,PANEL

3-8

“’)

CHAPTER 4

ADJUSTMENTS

4.3 CIRCUIT ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-6

4.3.1 Adjustment Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4-3

4-i

REV.-A

‘)

4.3 CIRCUIT ADJUSTMENT

The C107 MAIN board contains variable resistor VR1, which is used for balancing the circuitry. When any of the following parts are replaced, the circuitry must be balanced by adjusting the VR1.

R6, R7, TL431(IC1), and VR1

If the circuitry is not properly adjusted, the CPU A/D converter functions abnormally and causes irregular operation of the printer.

4.3.1 Adjustment Process

Attach a digital multimeter to the check terminal TP1 (Vref voltage) on the C107 MAIN board. Turn the printer On and adjust the variable resistor VR1 until a reading of 4.741 V is obtained.

4-6

‘)

)

CHAPTER 5

TROUBLESHOOTING

5.2 REPAIR BY UNIT REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-8

5.4 REPAIR OF THE MAIN BOARD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-14

5.5 REPAIR OF THE PRINTER MECHANISM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-17

LIST OF FIGURES

Figure S2. Printhead Resistance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

5-s

LIST OF TABLES

Table 5-2. Error Displays . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 5-3. Symptoms and Referenoe Pages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table S5. Repair of the Main Circuit Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table 5-6. Repair of the Printer Meohanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

$1

5-2

5-14

5-17

\

REV.-A

# 2 0

# 4 0

N60

# 8 0 o

0

0

0

0

0

0

H 240

(

Wire Assignment

0

#1 o

#3 o

#5 o

#7 o

#9 o #11 o

*13 o

#15 o

#17 o

H19 o it21 o

423

86 410 418 #122 ‘ *7 82 83

Coil Resistance:

45.5 *3.2 fl at 25*C

(Between each dot wire and common.]

( Terminal Assignment J

Figure 5-2. Printhead Resistance

5-8

/

‘)

“)

)

REV.-A

)

5.3 REPAIR OF THE MAIN BOARD

This section provides instructions for repairing the main board when it is defective and describes variius symptoms, likely causes, and checkpoints. Checkpoints refer to proper waveforms, resistance values, and other values to be checked to evaluate the operation of any component that might be bad. Check these values and take the appropriate action.

Table 5-4. Re~air of the Main Circuit Board

5-14

)

‘)

)

‘)

----- - . . . .- . . . -. ---- .-. —... ------- —-—- — ,— —-----–—. . . .

5-15

)

‘)

REV.-A

‘?

Problem

The carnage operates abnormally

Self-test prmtmg IS abnormal

Table =. Rebair of the Main Circuit Board (Continued)

—r—— .

Symptom

Carnage operation Is unstable(lack of torque)

Cause

Iclo

Is defectrve

Checkpoint

Self-test w not The CPU can executed not measure the voltage on the +35V hne

Icll

Is defective

Measure the voltage at pm 59(Vref) of

IC21 The normal voltage IS 4741 V

At IC11, check the input signal at pm

101 and the output signal at pm 46

Solutlon

Replace

Iclo

Adjust VR1

(Refer to

4 3 )

Replace

IC4D

A particular dot IS not being printed

IC4 - IC9 Is defecttve

For example, check the output signal at Replace IC4 pm2 and the out put signal at pm3 wtth - IC9

IC4

)

Paper Is not led normally

The paper IC3 Is does not feed, defectwe or the feed pnch IS abnormal

Check the input signal at pml and the output signal at pm2

Replace IC3

5-16

REV.-A

‘)

5.5 REPAIR OF THE PRINTER

For detailed procedures for replacing or adjusting parts, refer to Chapter 3, Dimssemb/yandAswmb/y, and Chapter

4, Ao@hr?ent. If a problem or symptom recurs following an attempted repair, refer to Table 5-5 to try to find other potential causes.

‘)

‘)

Problem

The carriage motor fails to operate.

Symptom Cauae Checkpoint Solution

The carriage motor Foreign substances Manually move the completely fails to activate at power

Remove any are lodged in the timing belt to see if foreign gears or elsewhere this causes the motor substances.

on.

in the mechanism.

to rotate.

The carriage motor Measure the coil is defective.

resistance of the motor. The resistance should be about 19.5 ohms.

The carriage does The carriage motor The belt pulley is not operate at rotates, but the defective.

power on (after carriage does not the carriage has mwe.

The timing belt is been manually defective.

centered prior to power on.)

Check for broken or worn pulley.

Check that the timing belt is correctly inserted into the bottom of the carriage.

Replace the carriage motor.

Replace the belt pulley.

Reinsett the timing bett.

Replace the timing belt.

Clean and lubricate.

The carriage moves left slightly, then stops.

Carriage movement Check whether the is not smooth.

carriage moves smoothly when moved manually.

The carriage The home position Use a multimeter to moves to the left or sensor is defective.

check the home right end, then stops.

position sensor.

Self-test printing The carriage does not execute.

moves, but no printing is performed.

The printhead FFC common wires are disconnected.

Check for a broken timing belt.

Check the common wires for the printhead FFC.

Replace the home position sensor.

Replace the FFC.

5-17

REV.-A

“’l

‘.,

)

Problem

Self-test printing is abnormal.

Paper feeding is abnormal.

(Continued}

Symptom

A particular dot fails to print.

The printing is too light, or the print density is not uniform.

Cause

The printhead is defective.

The printhead is defective.

The platen gap is not properly adjusted.

Checkpoint

Measure the coil resistance of the printhead. The normal value is approximately 45.5

ohms.

Check whether the dot wire is worn.

Solution

Replace the printhead.

Replace the printhead.

Check whether the tip Replace the .

of the dot wire is printhead.

worn.

Set the gap adjust lever to the second position, and check the gap between the tip of the printhead and the platen.

The appropriate value is 0.48 mm.

Adjust the gap.

Refer to Section

4.1.2, Platen Gap

A@stment.

Printing is petiormed, but the

Foreign substances Petform a visual are lodged in the check of the paper paper is not fed, or paper path.

is not fed uniformly.

The paper-feed path.

substances.

Check that no foreign

●

Remove any motor is not driving substance is lodged foreign substance.

the gear correctty.

between the gears, and that the gears are not broken or

Remove any foreign

●

Repface the paper-feed reduction gear.

worn.

●

Replace the platen gear.

The paper-feed motor is defective.

Measure the mil resistance for the paper feed motor.

The approximate value should be 79 ohms.

Replace the paper-feed motor.

5-18

REV.-A

‘)

‘1

The

Problem ribbon feed is abnormal.

The ribbon is not fed.

Symptom Cause

The ribbon cartridge is defective.

Checkpoint

Dismount the ribbon cartridge, rotate its knob manually, and check whether the ribbon feeds normally.

Solution

Replace the ribbon cartridge.

Foreign substances Check whether the are caught in the ribbon driving gear gears.

rotates when the carriage is moved manualty.

●

Remove any foreign substance.

●

Replace the .

ribbon-feed mechanism.

The ribbon feeds properly only when the carriage moves in one direction

(i.e., it fails to feed when the cam.age

moves in the other direction).

The planetaty lever Move the carriage is defective.

manually, and check tibbon-feed whether the planetary mechanism.

lever turns in reverse and engages the gear.

Replace the

Paper becomes stained.

Ink stains appear on areas where there is printing.

Printing mntinues Printing continues after the paper ends or when no paper is loaded.

past the paper end.

The ribbon mask is Check whether the not mrrectly

Reinstall the ribbon mask .S in the n!bbon mask.

positioned.

correct position.

The platen gap is not adjusted.

Set the gap adjust lever to the second position, and check the gap between the tip of the printhead and the platen.

The appropriate value is 0.46 mm.

Adjust the gap.

Refer to Section

4.1.2 P/aten Gap

A@stment.

The paper-end sensor is defective.

Check the paper-end sensor switch.

Replace the ~ paper-end sensor. ~•••y;n•

5-19

REV.-A

APPENDIX

Al

A.2

A.3

A.4

A.5

CONNECTOR SUMMARY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CIRCUIT DIAGRAMS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CIRCUIT BOARD COMPONENT LAYOUT . . . . . . . . . . . . . . . . . . .

EXPLODED DIAGRAM . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

CASE OUTLINE DRAWING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . .

A-1

. . . . . . . . . . . . . . . . . . . . . . . .

A-5

. . . . . . . . . . . . . . . . . . . . . .

A-12

. . . . . . . . . . . . . . . . . . . . . . .

A-16

. . . . . . . . . . . . . . . . . . . . . . . A-22

LIST OF FIGURES

Figure

A-1. Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Figure A-3. BOOARD ASSY.,MAIN(C107 MAIN BOARD) . . . . . . . . . . .

Figure A-9. BOARD ASSY.,MAIN Component Layout . . . . . . . . . . . . .

Figure A-13. LQ-570+ Exploded Diagram . . . . . . . . . . . . . . . . . . . . . .

Figure A-15. Model-5J10 Exploded Diagram . . . . . . . . . . . . . . . . . . . .

. Figure A-17. LQ-570+ Case Outline Drawing . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . .

A-1

. . . . . . . . . . . . . . . . . . . . . . . .

A-6

. . . . . . . . . . . . . . . . . . . . . . .

A-12

. . . . . . . . . . . . . . . . . . . . . . . A-16

. . . . . . . . . . . . . . . . . . . . . . .

A-18

. . . . . . . . . . . . . .’. . . . . . . . . A-22

LIST OF TABLES

Table A-1. Board Corm-or Summary . . . . . . . . . . . . . . . . . . . . . . . .

Table A-2. CN2 BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . . . .

Table A-3. CN3 BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . . . .

Table A+. CN4 BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . . . .

Table A-5. CN5 BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . . . .

Table A-6. CN6 BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . . . .

Table A-7. CN7 BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . . . .

Table A-8. CN8 BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . . . .

Table A-9. CN9 BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . . . .

Table A-10. CN1O BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . .

Table A-n. CN1l BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . .

Table A-12. CN12 BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . .

Table A-13. CN13 BOARD ASSY.,MAIN(C107 MAIN) . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . .

A-3

.’. . . . . . . . . . . . ::

. . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . ::

. . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . n

A-3

A-4

A-i

REV.-A

A.1 CONNECTOR SUMMARY

Figure A-1 illustrates the interconnection of the primary components. Table A-1 summarizes the functions and sizes of the connectors.

ImF7 ‘

Model 5J-10 PRINTER MECHANISM

I(COGZ PNL I I G A P L E V E R C R H O M E PE-2 PE-I CRMOTORPFMOTOR HEAD H E A D I p30ARD)

I’b

A

A A 4 b 4 t v v 1 v v v r

CN11 ] ICN121 I CN8 ] I CN9 I ICN1OI I CN4 I I CN5 CN3

BOARD ASSY., MAIN(C107 MAIN BOARD)

CN1

A

CN2

I

+

O p t i o n a l

I n t e r f a c e

C a r d

CN13

3 CN7

CN6 w

BOARD ASSY.,

POWER SUPPLY

[C062 PSB/

PSE BOARD) t

AC IN f t

P a r a l l e l VF ~ Specific l/F

- - - - - - - - - - - - - - - - - - - - - - - - - - - -

H O S T CiMPUTER

Figure A-1. Cable Connections

A-1

\

REV.-A

‘\

Board

BOARD ASSY.,PANEL

BOARD ASSY.,POWER

SUPPLY

BOARD ASSY.,MAIN

(C107 MAIN BOARD)

CN1

CN2

CN1

CN2

CN3

CN4

CN5

CN6

CN7

CN8

CN9

CN1O

CN11

CN12

CN13

CN1

Tabla A-1. Board Connector Summarv

.

Conneotor Funotion

BOARD ASSY.,MAIN

AC power input

DC power output

Parallel interface

Optional interface card

Control panel

MOTOR,CR

MOTOR,PF

Printhead

Printhead

DETECTOR ASSY.,HP

DETECTOR ASSY.,PE,REAR

DETECTOR ASSY.,PE,FRONT

DETECTOR ASSY.,PIATEN

DETECTOR ASSY.,RELEASE

DC power input

Pins

12

2

11

2

11

2

2

2

2

36

36

12

5

5

17

15 “

A-2

REV.-A

)

34

35

36

—

30

31

32

33

23

24

25

26

19

20

21

22

27

28

29

15

16

17

18

11

12

13

14

7

8

9

10

5

6

3

4

2

R.

T

1/0

1/0

1/0

1/0

1/0

1/0

1/0

0

0

0

0

1/0 o

0

I i

I

I c) o o

0

0

1/0

Signal Name

+5

+5

+ 5

+ 5

+ 5

+ 5

TXD

\READY

RXD

NC

\RST

INH

/CMREQ

/WRRDY

/RDREQ

/WR

/RD

/cs ‘

GND

GND

GND

GND

GND

GND

A3

D6

D5

D4

D3

D2

D1

DO

A2

A l

AO

D7

Function

+5 VDC

+ 5 VDC

+ 5 VDC

+ 5 VDC

+ 5 VDC

+ 5 VDC

Transmit data

Ready to receive data

Receive data

No connection

Reset

Inhibit

Command request

Write ready

Read request

Write

Read

Chip select

Signal ground

Signal ground

Signal ground

Signal ground

Signal ground

Signal ground

Address bus bit 3

Address bus bit 2

Address bus bit 1

Address bus bit O

D a t a b u s b i t 7

Data bus bit 6

Data bus bit 5

Data bus bit 4

Data bus bit 3

Data bus bit 2

Data bus bit 1

Data bus bit O

)

Table A-3. CN3 BOARD ASSY~ MAIN I(C107 MAI?

E

T

Signel Name

/PAUSE

Function

Pause switch

2

K r

/READY Fixed GND

Transmit signal (LED) 3 o TXS

LED data latch 4 0 /LDLED

Shift clock 5 0 /CKS

Load switch data 6

7

0

I

/LDSW

RX9 Receive data (switch)

+5 VDC 8 + 5

Signal ground 9

10

GND

SHLD

POWER1

Shield ground

11

12

—

I Power switch

—

POWER2 Fixed GND

3

4

2

1

5

Table A4. CN4 BOARD ASSY. MAIN {C107 MAIN)

No.

1/0 Signal Name Function

0 CRA

0 CRB

0 CRC

0 CRD

0 CRCOM

MOTOR, CR phase A

MOTOR, CR phase B

MOTOR, CR phase C

MOTOR, CR phase D

MOTOR, CR common

17

— *

16

0

I

15

0

13

14

0

0

0

0

9

10

11

12

7

8

6 0

5 0

4 0

3 0 o

0 2

T

Table A-5. CN5 BOARD ASSY. MAIN (C107 MAIN) -

No. 1/0 T

1

2

3

4

5

6

0

0

0

0

0

0

Signal Name

PFA

PFB

PFC

PFD

PFCOM

PFCOM

Function

MOTOR, PF phase A

MOTOR, PF phase B

MOTOR, PF phase C

MOTOR, RF phase D

MOTOR, PF common

MOTOR, PF common

Table A-6. CN6 BOARD ASSY. MAIN (C107 MAIN)

\

K 1/0

Signal Name Function

HD5

HD1

Head data 5

Head data 1

Head data 13 HD13

Head data 9 HD9

Head data 21 HD21

Head data 17 HD17

COM Common

COM Common

Common COM

HD24

HD16

HD12

HD8

Head data 24

Head data 16

Head data 12

Head data 8

HD20 Head data 20

HD4 Head data 4

TEMP2 Head temperature

+Vu TEMP1

A-3

REV.-A

)

-)

1

2

3

4

5

6

7

8

9

10 0

11 0

12 0

13 0

14 0

15 0

-

0

-

-

0

0

0

0

0

Table A-7. CN7 BOARD ASSY. MAIN [C107 MAIN’

No.

1/0 Signal Name Function

HD3

HD1 1

HD2

HD19

HD7

COM

COM

COM

HD22

HD15

HD18

HD23

HD1O

HD14

HD6

Head data 3

Head data 11

Head data 2

Head data 19

Head data 7

Common

Common

Common

Head data 22

Haad data 15

Head data 18

Head data 23

Head data 10

Head data 1 4

Head data 6

7

8

5

6

9

10

11

1

2

3

4

Tabla A-13. CN13 BOARD ASSY. MAIN 4C107 MAIN)

No.

1/0 Signal Name Function

-

-

-

-

-

-

-

-

-

0 Psc

+ 5

+ 5

GND

GND

GND

GND

GND

+ 3 5

+ 3 5

+35

Power switch signal

+5 VDC

+5 VDC

Signal ground

Signal ground

Signal ground

Signal ground

Signal ground

+35 VDC

+35 VDC

+35 VDC

Table A-8. CN8 BOARD ASSY. MAIN (C107 MAIN) ho. ] 1/0] Signal Name I Function I

1

2 -

I CRHOME

GND

DETECTOR ASSY.,HP

Signal ground

Table A-9. CN9 BOARD ASSY. MAIN (C107 MAIN)

No. I 1/0 I Signal Name I Function 1

2

1 I PE2

GND

D~CTOR ASSY.,P5 REAR

Signal ground

‘)

Table A-10. CN1O BOARD ASSY. MAIN (C107 MAIN)

No.

I

1/0 Signal Name Function

2

1

-

I PE1

GND

D13ECTOR ASSY.,PE,FRONT

Signal ground

Table A-n. CN1l BOARD ASSY.,MAIN(C107 MAIN)

No. [ 1/0 Signai Name I Function

11

2-

GAP

GND

DETECTOR ASSY., PIATEN

Signal ground

Table A-12. CN12 BOARD ASSY., MAIN (C107 MAIN)

No.

1/0 Signal Name Function

1

2 -

I LEVER

GND

DHECTOR ASSY., RELEASE

Signal ground

A-4

REV.-A

, A.5 CASE OUTLINE DRAWING

)

H-II

J i—---

1-

434 m m

Figura A-17. LQ-570+ Case Outline Drawing

A-22

4

(,

I ml

I

i

—

1

I

1

1

1

I

1’

Donut o

—

—

00001

I

00001

*

.

_====!

151 m

Figure A-18. LQ-107O Case Outline Drawing

I

A-23

REV.-B

EPSON