Centronics H80 Manuel utilisateur

MODEL H80, H136

· · SERVICE MANUAL

REV.

A MAY 1884

THE INFORMATION CONTAINED HEREIN IS

PROPRIETARY AND IS NOT

RELEASED

REPRODUCED WITHOUT WRITTEN PERMIS-

SION OF CENTRONICS DATA COMPUTER CORP.

SERVICING INFORMATION FOR YOUR PRINTER MAY

OBTAINED

CALLING THE NUMBERS LISTED BELOW.

(ASK FOR FIELD ENGINEERING)

'-._._

CEnTRDnlC:S®

data computer corporation

Hudson, New Hampshire 03051

Tel. (603) 883-0111, TWX. (710) 228-6565, TLX. 94-3404

Field Engineering Headquarters (603) 883-2492

Regional Sales Offices

Eastern Region (Mass.):

Central Region (Texas):

Western Region (Calif.):

Tel.

(617)

935-6150,

TWX.

710-348-0343

Tel.

(617)

461-5711,

TWX.

910-890-4916

Tel.

(714)

979-6650,

TWX.

910-595-1925

Regional Field Engineering Offices

Eastern Region (Mass.): Tel.

(617)

935-8130

Central Region (Texas): Tel.

(617)

461-7121

Western Region (Calif.): Tel.

(714)

957-1510

Centronics Data Computer (Canada) Ltd.

Mississauga, Ontario

Tel.

(416)

625-0770,

TWX.

610-492-4382

Centronics Data Computer

(U.K.)

Ltd.

London, England

Tel. 011-44-464-5011, TLX.

851-877801

Centronics Data Computer (France)

71-73

Rue

Desnouettes, 75015 Paris, France

Tel. 828-4051, TLX. 202686

Centronics Data Computer (Germany), Gmbh

6000 Frankfurt am Main

Tel. 666-1021, TLX. 841-413224

Centronics

Puerto Rico

Dorado, Puerto Rico

Tel.

(809)

796-1881, TLX. 385-9349

Centronics (Italia) S.P.A.

Via Santa Valeria

201123 Milan, Italy

Tel. 809-514

9/80

Rev.

Patents pending in U.S.A. and other countries

Printed in U.S.A.

Specifications subject

change without notice

MODEL H80, H136

SERVICE MANUAL

37401800-IAOO

REV.A

MAY 1984

SERVICE MANUAL

1800·9AOO

TABLE

CONTENTS

SECTION

1-INTERFACE

SPECIFICATIONS

1.1

COVERAGE

THIS

MANUAL

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

1·1

1.2

OVERVIEW

..........................•....................................

1·1

1.3

SPECIFICATIONS;

HBO,

H136

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

1·2

1.4

INTERFACE

SPECIFICATIONS

.....................................•..........

1·5

SECTION

2-THEORY

OPERATION

2.1

GENERAL

..........................................................•.....

2·1

2.2

CONTROL

CARD

BLOCK

DIAGRAM

.........................••.................

2·2

2.3

MEMORY

MAP

..........................•.................................

2·3

2.4

INITIALIZATION

ROUTINE

...........•.......................................

2·4

2.5

CONTROL

CARD

CIRCUITS

...................•..............•...............

2·5

2.6

JUMPER

SETTINGS

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

2-12

2.7

DIP

SWITCH

SETTINGS

....................................•.•.............

2·13

SECTION

3-PREVENTIVE

MAINTENANCE

3.1

DESCRIPTION

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

...............•.......

3-1

3.2

CLEANING

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

3·1

3.3

LUBRICATION

.......................•...................•................

3·1

SECTION

4-REPLACEMENT

PROCEDURES

4.1

PURPOSE

...........................•....................................

4·1

4.2

HEAD

REPLACEMENT

(Refer

Users

Manual)

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

4·1

4.3

REMOVAL

COVERS

...................................•.••..............

4·1

4.4

MECHANISM

REMOVAL

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

4-4

4.5

CONTROL

CARD

REMOVAL

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

4-5

4.6

POWER

SUPPLY

REMOVAL

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

4-6

PLATEN

REMOVAL

...................•.....................•..............

4-7

4.B

HBO

TRACTOR

REMOVAL

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

4-8

4.9

H136

TRACTOR

REMOVAL

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

4·9

4.10

HBO

CARRIAGE

TIMING

BELT

REMOVAL.

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

4-10

4.11

H136

CARRIAGE

TIMING

BELT

REMOVAL

...........................•.........

4·11

4.12

PAPER

RETAINER

CARRIAGE

GUIDE

SHAFT

REMOVAL.

.........•..............

4-12

4.13

PINCH

ROLLER

REMOVAL

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

4·13

4.14

CARRIAGE

DRIVE

MOTOR

REMOVAL

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

4-14

4.15

PAPER

FEED

DRIVE

MOTOR

REMOVAL

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

4·15

1800-9AOO

TABLE OF CONTENTS (cont.)

SECTION

5-ADJUSTMENTS

5.1

PURPOSE

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

5-1

5.2

SUMMARY

ADJUSTMENTS

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

5-1

5.3

CARRIAGE

TIMING

BELT

TENSION

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

5-2

5.4

PAPER

FEED

BELT

TENSION

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

5-3

5.5

HEAD

CLEARANCE

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

5-4

5.6

CARRIAGE

HOME

POSITION

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

5-5

TRACTOR

WHEEL

ALIGNMENT

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

5-6

5.8

IDLE

GEAR

AXIAL

PLAY

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

5-7

SECTION

6-TROUBLESHOOTING

CHARTS

6.1

PURPOSE

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

6-1

6.2

PREPARING

TROUBLESHOOT

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

6-1

6.3

TROUBLESHOOTING

FLOWCHARTS

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

6-2

6.4

MECHANICAL

FAULT

CHART

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

6-10

SECTION

7-CIRCUIT

DIAGRAMS

7.1

PURPOSE

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

7-1

7.2

PRIMARY

POWER

CIRCUIT

LINE

FILTER

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

7-1

7.3

LOGIC

DIAGRAMS

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

7-1

7.4

CONNECTOR

LAYOUT

DIAGRAM

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

7-7

7.5

CONNECTOR

ASSIGNMENTS

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

7-8

7.6

WAVEFORMS

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

7-9

7.7

PCB

LAYOUT

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

7-13

SECTION

8-ILLUSTRATED

PARTS

8.1

COVERAGE

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

8-1

8.2

MINOR

HARDWARE

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

8-1

8.3

ILLUSTRATED

PARTS

SUMMARY

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

8-1

APPENDIX

A-SERIAL

INTERFACE

A.1

DESCRIPTION

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

A-1

A.2

PREPARATION

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

A-1

A.3

INSTALLATION

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

A-1

A.4

USER

SELECTABLE

FUNCTIONS

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

A-2

A.5

CONNECTOR

ASSIGNMENTS

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

;

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

A-3

A.6

SERIAL

INTERFACE

CONNECTOR

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

A-3

SIGNAL

DESCRIPTION

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

A-4

A.8

INPUT

/OUTPUT

CIRCUIT

CONFIGURATIONS

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

A-5

A.9

SERIAL

INTERFACE

INITIAL

FLOW

AND

MEMORY

MAP

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

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

A-6

iii

SECTION 1

INTERFACE & SPECIFICATIONS

1.1

COVERAGE

THIS MANUAL

This service manual contains technical data, procedures, prints and schematics for the maintenance

Model H80

and H136 printers. The Model H80

column printer. The Model H136

156

column printer. Look for

differences in configurations and parts descriptions due to wider platen, longer line length, etc. Most other func-

tions are identical.

1.2 OVERVIEW

The printer consists

the print mechanism, control circuits, power supply, control panel and enclosure. The serial

interface

an option.

Control panel

(switches,

LEDs)

Power supply

(transformer)

power

1800-9AOO

Print Mechanism

(motor, print head,

sensors, etc.)

Control circuit!>

(CPU,

ROM,

RAM. -

driver, etc.)

Interface

(PIA)

i -

_...,

-------

I Serial interface I

I card (optional) I

I I

(CPU,

ACIA) I

I I

L----

--------'

Parallel interface

(conforming

Centronics

specifications)

Serial interface (RS232C,

current loop)

BASIC BLOCK DIAGRAM

1-1

1.3

SPECIFICATIONS;

HBO,

H138

Hio

H138

Print head

(a) Wire diameter 0.25 mm (.010") 0.25 mm (.010")

(b)

Wi~

pitch 0.353 mm (0.014") 0.353 mm (0.014")

(arranged vertically) (arranged vertically)

wires 9 9

(d) Response frequency

960

Printingspeed

160

characters/sec

160

characters/sec

(at

characters/inch) (at

characters/inch)

Feed speed 9.1 lines/sec 9.1 lines/sec

(at 6 lines/inch)

(at

6 lines/inch)

Feed method Pin feed (feed force: 2

Pin feed (feed force: 2

more) more)

Friction feed (feed force: 1

kgor

Friction feed (feed force: 400 g

more) more)

Print forms

(a) Fan-folded forms 127-254 mm wide (5-10") 127-431.8 mm wide (5-17")

(b) Cut-sheet forms 127-254 mm wide (5-10") 127-431.8 mm wide (5-17")

(A4 standard)

(A3

standard)

diameter 70 mm, inside diameter

20 mm

less

(d) Paper thickness

With copies 0.13 mm

less (.005") 0.13 mm

less (.005")

Without copies 0.25 mm

less (.010") 0.25 mm or

less

(.010")

Duplicating capability

to 3 sheets including origi-

4 sheets including origi-

nal (with 34-kg carbon-backed nal (with 34-kg carbon-backed

paper

non-carbon paper)

paper

non-carbon paper)

End-of-paperdetection Approx.

mm from print po- Approx. 65 mm from print po-

sition to detecting position (End- sition to detecting position (End-

of-paperdetection can be disa- of-paperdetection

disabled

bled with a switch.) when levers are set

FRICTION

FEED and PAPER SET.)

Paper

cutter l inch

less from print position I inch

less from print position

Dot pitch (vertical)

Normal pitch 0.353±0.2 mm (1172") 0.353±0.2

(1172")

~pitch

0.118±0.1

(1/216") 0.118±0.1 mm (11216")

Characterpitches

Pica normal standard

characters/inch

characters (80 characters/line) (156 characters/line)

Pica

NLQ

standard

characters/inch

characters (80 characters/line) (156 characters/line)

Pica normal enlarged 5 characters/inch 5 characters/inch

characters (40 characters/line)

(78

characters/line)

1800-9AOO

1-2

1.3

SPECIFICATIONS;

H80,

H136

(cont.)

H80

Character pitches (cont.)

Pica NLQ enlarged

characters

Pica normal reduced

characters

Pica normal reduced and

enlarged characters

Elite normal standard

characters

Elite normal enlarged

characters

Graphic dot number 8, 9

Line spacing

8. 9,

5 characters/inch

(40

characters/line)

.14 characters/inch

(132

characters/line)

8.57 characters/inch

(66

characters/line)

characters/inch

(96

characters/line)

6 characters/inch

(48

characters/line)

dots/inch

(480

dots/line)

dots/inch

(576

dots/line)

dots/inch

(640

dots/line)

dots/inch

(720

dots/line)

120

dots/inch

(960

dots/line)

240

dots/inch (l,920 dots/line)

Adjacent horizontal dots cannot

be printed in

240

dots/inch

mode.

120

dots/inch mode

divided

into high speed mode in which

adjacent dots cannot be printed

and normal mode in which all

dots can be printed.

116

inch (4.23 mm)

118

inch (3.18 mm)

7/72 inch (2.47 mm)

n/72 inch

n/216 inch

H136

5 characters/inch

(78

characters/line)

.14 characters/inch

(267

characters/line)

8.57 characters/inch

(133

characters/line)

characters/inch

(187

characters/line)

6 characters/inch

(93

characters/line)

'60 dots/inch

(936

dots/line)

dots/inch (

123

dots/line)

dots/inch

,248 dots/line)

90 dots/inch (l,404 dots/line)

120

dots/inch (l,

872

dots/line)

240 dots/inch (3,

744

dots/line)

Adjacent horizontal dots cannot

be printed in

240

dots/inch

mode.

120

dots/inch mode

divided

into high speed mode in which

adjacent dots cannot be printed

and normal mode in which all

dots can

printed.

116

inch (4.23 mm)

1/8 inch (3.18 mm)

7/72 inch (2.47 mm)

n/72 inch

n/216 inch

(Programmable in units

1/216") (Programmable in units

11216")

Ink ribbon

(a) Type

(b) Specifications

(c)

Color

(d) Service life

(e)· Storage life

Supply voltage/power

consumption

UL/CSA (USA)

Europe

1800-9AOO

Cassette (ink roller built in)

Nylon,

mm wide x 6.5 m,

endless loop

Black

Approx. 3 million characters (pica

standard) at normal temperature

and

humidity

1 year in fixed package at room

temperature

Supply voltage

60Hz

50Hz

120V +

10%

-15%

230V ±

15%

1-3

Cassette (ink roller built in)

Nylon,

mm wide x 6.5 m.

endless loop

Black

Approx. 3 million characters (pica

standard}at normal temperature

and humidity

1 year in fixed package at room

temperature

Power consumption

Max.

1.3

Max. 120 W

1.3

SPECIFICATIONS;

HBO,

H136

(cont.)

-----

H80 H138

Reliability/durability -

(a) MTBF 2,000 operating hours (under 2,000 operating hours (under

operatingconditions

35% operating conditions

35%

page density and 25%

less page density and 25%

less

duty cycle) duty cycle)

(b) Unit service life 12.000 operating hours

5 12,000 operating hours

(excluding print head) years (under operating condi- years (underoperating condi-

tions

of35%

page density and tions

35% page density

and

25%

less duty cycle) 25%

less duty cycle)

(16 dots/characterand duty (16 dots/character and duty

cycle

wire 35%

less) cycle

wire 35%

less)

Printing operation

I-pass characters Bidirectional logical seeking Bidirectional logical seeking

2-pass characters Same as above (See note.) Same as above (See note.)

Graphic Unidirectional (left to right) Unidirectional (left

right)

Note: Passes I and 2

the

same character are printed in

the same direction.

Safety regulations Passes

UUCSA/GS

Passes

UUCSA/GS

regulations regulations

Electrical characteristics

(a) Resistance to line noise

The

unit operates properly with

The

unit operates properly with

impulse

500 V

less (800 ns impulse

500 V

less (800 ns

square wave). square wave).

Environmental conditions

(a) Temperature

Operating

s·

to40" c 5' to

40'

Storage

-30'

to60'

-30'

60'

(b)

Humidity

Operating

20%-90%

r.h. 20%

-90%

r.h.

(no condensation) (no condensation)

Storage

10%-90%

r.h.

10%

-90% r.h.

(no condensation) (no condensation)

Operating

0.25Gmax.

0.25

Gmax.

Storage 0.5

Gmax.

0.5

Gmax.

(d) Shock

Operating I G max.(within I ms) I G max.(within 1 ms)

Storage 2 G max. (within 1 ms) 3 G max.(within I ms)

Physical Characteristics

(a) External dimensions

Width 400 mm (15.75#)

598

mm (23.5")

(excluding paper feed knob) (excluding paper feed knob)

Depth 320 mm (12.6") 350 mm (13.8#)

Height

110

mm (4.3")

130

mm (5.1#)

(excluding paper cover) (excluding paper cover)

(b) Weight Approx. 8 kg (17.5 lb.) Approx.

kg (26.4 lb.)

1800·9AOO

1-4

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