Commodore 1515, 1525 Technical Manual

PIN 990450

Commodore Graphic Printer

Technical

Manual

Model

1515/1525

Manual

e::

commodore

COMPUTER

These documents are for repair service information only. Part numbers are

for

reference

only. Only parts on current dealer parts list are available. No license

is

given

for

any use by

possession of these documents and may not

be

reproduced

in

any form

withoutthe

written

approval

of

Commodore Electronics Limited.

CONTENTS

I.

SPECI

FICATIONS

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

2

II. CONSTRUCTION

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

5

1.

SUMMARY ................................................................................................................................. 5

2.

PRINTING ................................................................................................................................. 7

3.

LIN8FEED ................................................................................................................................

10

4.

CIRCUIT .....................................................................................................................................

12

5.

TIMING DIAGRAM ...................................................................................................................

14

III.

REPAIRING LEVEL

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

17

IV. MEASURING INSTRUMENTS AND TOOLS

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

17

V. MAINTENANCE

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

18

1.

CLEANING ................................................................................................................................ 18

2.

LUBRICATING ........................................................................................................................... 18

VI.

DISASSEMBLY AND REASSEMBLY

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

19

1.

UPPER

CASE

............................................................................................................................. 19

2.

LOWER

CASE

BLOCK AND MACHINE ASSEMBLy ..............................................................

20

3.

LOWER

CASE

BLOCK ..............................................................................................................

23

4.

CONTROL

PCB

UNIT AND LAMP

PCB

UNIT

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

26

5. PRINT HEAD

UNIT

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

27

6.

LINEFEED MECHANISM ..........................................................................................................

28

7.

FEED DRUM AND CARRIER

UNIT

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

29

8.

GEAR TRAIN ................................................................................................................. ,..........

32

9.

TRACTOR ........................................................................................................................ ..........

34

VII.

TROUBLESHOOTING.................................................................................................................... 35

1

I.

SPECIFICATIONS

1. General Specifications

• Print method ................................... Impact dot-matrix print

(SEI

KOSHA's uni-liammer

method)

• Print format .................................... 5 x 7 dot-matrix

• Charactors

• Graphics .•........................................

• Character

Codes

• Character

size

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

upper/lower

case

characters,

nu-

rreric

s~ols,

&

Pet

graphics

Dot

addressable.

7 vertical dots per column

8-bit

codes

(Vi

c-20

,C-64

codes)

Height: 7 dots (2.82 mm)

Width: 5 dots (1.76 mm)

• Print

Speed

.............................. ........ 30 characters/sec. (left

to

right, uni-d irectional)

• Maximum Columns .......................... 80 columns

• Character Spacing ........................... 12 characters/inch

(10

charcters/

inch

on

1525)

• linefeed Spacing ............................. 6 lines/inch .............. Character mode

9 lines/inch .............. Graphic mode

• linefeed

Speed

................................ 5 lines/sec ................. Character mode

7.5 lines/sec ............. Graphic mode

•

Paper

Feed

...................................... Pin

feed

•

Paper

Width . ........... ........................ 4.5

to

8 inches acceptable

(10

inches

on

1525)

• Number

of

Copies ........................... Up

to

3 copies including orig.

• Inked Ribbon .................................. Inked roller built-in

cassette

type, single color

• Dimensions ..................................... 132 x 328 x 172.5 mm

(1525;

23LOx420Nx13lH)

• Weight ............................................. Approx. 2.5

kg

(1525;

4.:3<g)

2. Environment

• Power Requirements

• Power Consumption ...................... .

• Temperature .................................... .

• Humidity ....................................... .

117 VAC±'IO%,

50/60 Hz

for

USA )/60

Hz

for

Europe

15 watts max. (character printing)

(1525;

200)

5 watts (idling)

(1525;

BN)

5°C

to

4Q°C

20%

to

80% (non-condensing)

2

3.

Features

and

Codes

3.1

Main features

• Double width character

output

under software control.

• Graphics capability (picture

and

graph output capabilities).

• In the graphic mode, a graphic

data

pattern

can

be

repeated

as

many times

as

you want

with a single command.

• Print position

addressable

by character or

dot

column (positioning control).

• Graphic, character

and

double width character

modes

can

be intermixed on a single line.

• Automatic printing.

When

the

text

exceeds

the maximum line length

no

data

is

lost due

to

overflow.

• Self-test printing

is

available.

3.2 Printing

modes

• Character mode

• Double width character mode

• Graphic mode

3.3 Control

codes

• N L (O,A) Line

feed

after printing

•

CR

(0,0) Line

feed

or

no

line

feed

after printing (jumper selectable,

see

below)

• DC4 (1,4) No line feed after printing (The

above

three

codes

are

print

commands)

•

BS

(0,8) Graphic mode command

•

SO

(O,E) Double width character mode command

•

SI

(O,F)

Character mode command

•

pas

(1,0) Print start position

addressing

•

ESC

(l,B)

When

followed by the

pas

code

it

is

used

to

specify a start position

according

to

the

dot

address

•

FS

(l,C)

Repeat

graphic select command

3

CURSOl

UP MODE Code Table

0

010

0 0 ! 0

I 0 I

0 1

,

1

I

1

I

1 , 1

I

1 !

1 I 1

, .

I

-----+-

0

01

0

I

0 1

I

1 I 1

I

1

0 0

I

0

i

o

II!

1 I

1

i

I

i

0

I

1

I

1 0 I 0

I

1 !

1 0 0

I

1 i 1

!

0

i

0

I

III

I

0 I 1 I 0

I

1 0 i 1

,

0 I 1 0 1

,

0

1

I 0

I

1

!

0

I

1

I

,

I

,

l

07 I 06

I

D51

04 I 03 : 02 i 01 . DO

i

I

0

;

1

:

2 I

3

I

4

I

5

I

6

,

7

8 9 A

B

,

C

0

E

:

F

,

0 i 0

,

0 i 0

I

0

POS;

SP:

IJ

I

@i

PiE

0:

SP

~ ,

:'

. 0 '

sP:

[21

,

i 0

0

i

1 , 1

(IN'~

·

I

1

I

A

,

Q '

.,

~

l,0:':

[J

:x::

•

[J

a:i

,

(ll'\~',

I

I,;'

I

0 ; 0

1

i

0 2

svs

·

2

I

B

R .

r;

n

REV

~

-,

I

II

.~

I

O~

, , ,

"""

OFF

•

I

...

I

0 0 1 1 3

;

3

r

C

S.

~

:r

••

"-:1:

,

-,

,

!

I!

~

I

,

I

T:

~

0:

::J

C r--.Il

=._U

~

0 1

0

4

S i

4

D,

I 0

,

1 , 0 , 1

,

5

I

t}o

:

5

I

E

U!LJ'Ld

C_t=

C

:2

o [:

I 0

,

1

0 i 6

I

!

&!

6

I

F

v·

Q

~'

I

]

;-

~

CL

,

;

~

i

1 I 1 i 1

I

7

j

1~~WiIJ

u~~L:fn

c

l:l

u~[Ji

I

1

i

0

,

0 I 0

I

8 BS

:(18

HIX![]

~!

m -

[]

~.;Di

I

,

I ~ :

r:]i-.

t;

1 I 0 I 0

I

1

I

9

,

I

9 I

,

Y

n'r:

[]r"!

I

)

I

-~,

:

..

,

1

o j

1 i 0 !

A

NL

SLll:

•

J I

z

I~!~i

:0

o :

~

,

'+l

! 0

;]1

1

I

o I

1 )

1

I

B

ESCj

+

;

I

KI

[ I

~

I

Eli

i

.

ICE

1J';r

a:J:

[]

,

L!

!

L.J

I,'

I

1

I

0

I

0

I

C

I

<

LI

T 1

0

:

(]

I

,

:[1

~'CIJ![i:"1

I

I,

,

I'

1 j 0

;[5

,

m~

1

I

1

I

D

CR

,

-I

=

N

) i

~!~!

0]1

"::11'

,

i

,-i

1 S

,OJ

[5

I

L!~

I

1

i

1

I

1

i

0 I

E SO

I I

)

O!

,il

~i:ZGlI!:L'1Il1

,

I

T : 0 i

If

I " •

1r

I,

,

/1

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.-o:~:

-i

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1 ! 1 i 1

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1 F

51

:

,

p:

Ii

!iI

,[

~:

r , ,-.

,

I • :

-

~i

-

CURSOL

DOWN

MODE

Code Table

0

I

0 I 0 0 j

0 0

0

I

o t

1

i

1

I

1

I

1

I

1 1

,

1

i

,

01

0

I

!

I

0

I

1

I

0

,

0 0 0

I

1

,

1

0

I

0

i

1

,

0 0 1

1

i

0

i

0

1 1

I

01

0

1

I

1

I

i

,

I

,

0

1 0

1 0 1 ! 0

1 I 0

,

1

0 1

011

o I

1

I

,

I

07 i 06 I 05 i 04

03 : 02 : 01 : 00

I

It

1

I

2

3

I

4

5

,

7 I I

i

9

A 8

:

C

I

0 E

I

F

,

0 I 0

0

i

o I

0

,POS·

SP

II

I

(!.

p

.6:

pi

I

SP'

Gi

P

SP:

[2

,

0

I

0 0 ! 1

I

1

tYR;:".

,

1

I

•

II

:

A

I

QI

':l,~~,

[J

L

~

A

!

Q i

[]

;:I; i

;VJ~

~

,

L........i

I

0 i

0

1 0

i

2

svs

~

2

I

b

r

B!

R

It

..

:v"'--r-~~

B

!

R

I.

"

;

!

0:-;'

OFF

.~tr_

.

::r:

'

0

i

0

1

1 I

3

I

;:

3

,

c $

c

I

5

LO~,

E[

c

s

IO;:i

I

~

0

1 0 0

I

4

,

si

4 d

t

Oi

T

'DO:

Dr

TiO,D

,

0 1

0

1 S

90

I

5

~

u

E

I

t'

.

10

[JI

E

i

u

10

[J'

;

0 1 1

0

6

,

lJ,;

6

f

\-

t-

\.

I

1.,

[]

i

F

I

V

EiJ

I

,

i

,

:

~

1

v;

i

DID!

Gjw

DiU:

0

,

1 1 1

i

7

I

' ,

7

,

c

,..

G

,

I

i

,

~

!

ii

I u I

I

1

0

8

BS:

1

(

I

•

,

h

It

H

I X i

i

HIX

m~

I

,

1

I

0

0 1 9

)

9

I

i

I

).

!

I

yl

i

~I~!

' I

f&'

~

,

I

10

lal

I : Y , • :

1

•

1

0

A

:\L

:5Lll

•

j

)

z

I

J

Z

liZ

D:.ai

1

I

0

!

1

,

1

B

:ESCI

+

k I

[

I K

iii

~

[E

lJ

KIE8

[]:iJJ

I

; ,

1 1

i

0 0

c

<

J

,

¥I

L

(]i

:

[J

~

L

II]

[il~i

·

I

i

-

J

l M

[]i

rs

E!l

~I

I []

[!jitJi

I 1

,

0

i

1

0

CR

-

=

mi

I

,

1 1 1

I

•

E

50

)

•

!

T

,

N

g'

I

@

~

~!~IEili[]!

;

I

i

1 1 I 1

I

1 F SI

/

•

0

!

.-1

0

~i

i

IlJ!~

OI~ICJI~'

,

4

II.

CONSTRUCTION

1. SUMMARY

Figure 1 shows the block diagram and Figure 2

is a flowchart

showing the sequence

of

its

motion.

I

nput

data

Control

PCB

unit

,--------

I

L

__

_

.---L..-..... Print mechanism

Figure 1

5

117VAC,

220 VAC,

or

240

VAC

I

-

-1-

- - -

-I

I

_______

J

Line-

'--_---'

feed

OUTPUT THE STATUS

OF

"NOT

BUSY"

NO

YES

OUTPUT THE STATUS

OF

"BUSY"

NO

WRITE THE INPUT

DATA

ON

BUFFER

NO

YES

Figure 2

6

PRINT OUT THE

DATA

IN BUFFER

2.

PRINTING

(1) PRINTING MECHANISM

This Printer

is

based

on a single

printing

hammer system which

is

quite unique and

different

from

other

impact

dot

printing systems. The timing

of

hammer printing depends upon revolution

of

the rotation

detector. This revolution, rightward movement

of

the hammer and the revolution

of

the platen

are

synchronized. Character and graphics dots

are

printed when the relative positions

of

the hammer head

and

the platen

are

encountered. The relationship

of

the hammer, the platen and the

dot

sensor

is

shown

in

Figure

3;

that

of

the hammer head, printed

dot,

and signals

of

the

dot

sensor in Figure 4

VIEW POINT

FROM®

PART®

HAMMER HEAD HAS A

SLOPE

8

AGAINST RIDGES

P

3

---4-+-+f----

P

2

B7~~~~",---,----

PI---~--~-

/

Figure 3

DETAI

LS

OF

PART ®

..

25.4/12-...,.

b

OI

ao a

..

a2 a3

a4

as

a6

a7

a8

a9

bo

.----

I

-E E

-N

m

-

N

I

~

l

I I

I

iE-l.76

__

I.

,.

--II"

~

~.

". ".

ii~

~

I

II

PLATEN 10

rps

(Revolutions

of

motor

are

reduced

to 1/6

by

reduction

gear)

Has

evenly divided

18

ridges

PI,

P

2

, ••••• ,

P

I8

FEED DRUM

UNIT

CLUTCH

(d)

REDUCTION GEAR

ROTATION DETECTOR

(

Fixed

to

motor shaft)

60 rps

-+-1+- DISTANCE

BE

TWEEN

DOTS

!

~AMIM~R

HE1~

,-1-8

T

I.,

"-

zt

-1

N

wen

~

Ww

•

I

~

~g

;::::J

I~

;::::J

w-

.~

ma::

~

wei:'

'"""=l

u-

ZZ

;::::::J

c(w

I

.".

,.

1-1-

'---

enc(

-...I

c,*Q.

PLATEN 1 REVOLUTION (O.ls) Hammer

moves

6.35 mm (1/4 inch,

during 3 characters printing

SLOPE

OF

HAMMER

8

=tan~

p

7

(2)

CARRIER

UNIT

MOVEMENT AND RIBBON FEEDING

Figure 5

shows

rightward movement

of

the carrier

unit

and

ribbon feeding due

to

motor revolutions.

Figure 6

describes

the carrier unit's return

to

the home position, activated by the H solenoid.

PRINT DIRECTION OF RIBBON MOVEMENT HEAD

UNIT

RIBBON CAM

RIBBON FEED BOARD

RIBBON CAM

R'::tt

Ribbon

is

fed

in

the arrow direction when

ribbon

is

caught between ribbon

cam

and

ribbon

feed

board.

When

carrier

unit

returns leftward,

ribbon

is

not caught.

SPRING

RIBB~NI

~

\

FEED BOARD RIBBON

Figure

5

CONSTRUCTION

OF

H

SOLENOID AND CLUTCH

m CLUTCH

H SOLENOID;l (JAW CLUTCH)

'j

,

---J<1 / .

! ,

When

H solenoid

is

pulled, the clutch

is

released

and

the carrier

unit

returns

to

the leftmost home

position forced by the recovery spring.

CARRIER

UNIT

AND PRINT HEAD'

UNIT

1/1/1111

//11

1111/111

1/1"

11//11/11/""

1111/11111111111111111111111111

IIlIllIllllIIl/lIIlII

1/111/111

1111/

, ---'---------'

RECOVERY SPRING

Figure 6

8

(3)

HAMMER DRIVE

(PIN

DRIVE) FLOWCHART

NO

RESET

PIN CNT

SHIFT PIN-REG

RIGHT BY

ONE

FIRST 0

CHARACTER PATTERN

"A"

OT

0

,0

0

-

~

0 0 0

0

r--'r'0

0

SEVENTH DOT

~

) PIN-REG

NO

DATA

REG

= 1

NO

YES

HEAD COIL

ABOUT

290

p.s

"ON"

CNT =

CNT+1

END

Figure 7

9

DATA

REG

IO~D

)

FIRST DOT

PIN CNT: A counter

for

pne column

(7

dots)

of

a character pattenl.

PIN-REG: A register storing one column

(7

dots)

of

a character pattern.

DOT

SNS:

Timing

signal

for

each

dot.

DATA

REG:

One

bit

register

for a dot

to

be

printed.

3. LINEFEED

(1)

LlNEFEED

MECHANISM

Figure 8

shows

the linefeed (paper feed) controlled by the motion

of

the LF solenoid. The LF solenoid

is

activated three times

for

printing characters

and

two

times for printing graphics.

The transmission

sequence

of

a LF solenoid motion

is:

LF

r----

CLAW WHEEL

f--------

LF CLAW

f-------+

GEAR

f-------.

TRACTOR

I---

TRACTOR

SOLENOID

UNIT

WHEEL

SHAFT

The condition

of

the claw wheel

unit

when the LF solenoid

is

inactive

is:

i)

The claw wheel

unit

is

pulled

by

the LF rope spring.

iil

The

saw

teeth

of

the LF claw wheel and the

saw

teeth which

are

pushed

by

the claw wheel

spring

are

coupled.

REVERSE

STOP

CLAW

EARTH PLATE

(Ll

LF SOLENOID

LF

ROPE

CLAW LF CLAW EARTH

LF

CLAW

WHEEL STOPPER PLATE

(Ll

WHEEL

UNIT

.CLAW WHEEL SPRING

LF

ROPE

SPRING

LF SOLENOID

Figure 8

10

(2)

LlNEFEED

FLOWCHART

LENEFEED

LFCNT = 3

LFCNT= LFCNT

-1

YES

END

NO

LFCNT: COUNTS THE NUMBER

OF

LlNEFEED

k'~~~:/~Zb~G

I I I

II

r-

--~I_-_--_·~~S~~~~O'D"ON"

I

~

. LF SOLENOID

"OFF"

~

33ms

33

ms

Figure 9

11

~

N

eN

I

ADDRESS/TEST

SWITCH

RAI-I

I

':~--------------T,~~~e

~~

CN2

0.1

~

RD

-

.::=il

Vc<°

[~W;;~?tJ

o..S7.)

ATNPJ A

..

_A

£If

W

Vee

I~RAH

Sfto.03

GND~

C3""'-

C8

Vee

11_-f

10H

II

.,JT

(NOTE)

Aa

A.

RESISTOR

VAlUES

ARE

IN

(kQ]

UNLESS

OTHERWISE

SPECIFIED.

CONDENSER

VALUES

ARE

IN

(PF]

UNLESS

OTHERWISE

SPECIFIED.

*1.*2

WITH

HEAT

SINK.

2732 -

CONNECT

J I •

J.

2332

-CONNECT

J2.

J3

'E=:

w

~~Ol~~~

*"~YE

-::;t

-

__

12~3

c2llRI~CN5-

Y .

........

(LS

I.)

10.Z

ll:2.2

L....L..!J~~

-'

L--I>lIP~

-'

~

a.

RI.

0.075

(2W>

)C~

RD

CN8

HEADa..umt

WH

I)

CN9

• • m

LF

WIItH

Gft

•

C7JY)E

CNIO

I t£ADaIl

vee-----<D~~L-

~

~OR~ERLA~

0.3

SlR~o

BlU

~

* J 1

0

;:

r

'0

1.2'

cn~u,

tt~)

..

I'

+

PA780SC

~~

+

1*

I

(6.~

__

_

D.

HZ6C2

CNIl

+>.1

• r.,...

lYE

••

J • ___

u'.

.

...

__

._..

,-----",)

CNI'

Figure

10

~

•

o

-

:l:J

o

c:

-

~

Commodore 1515, 1525 Technical Manual

Specifications and Main Features

Frequently Asked Questions

User Manual